WO2022082543A1 - Iab节点的移植方法及装置 - Google Patents

Iab节点的移植方法及装置 Download PDF

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Publication number
WO2022082543A1
WO2022082543A1 PCT/CN2020/122610 CN2020122610W WO2022082543A1 WO 2022082543 A1 WO2022082543 A1 WO 2022082543A1 CN 2020122610 W CN2020122610 W CN 2020122610W WO 2022082543 A1 WO2022082543 A1 WO 2022082543A1
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WO
WIPO (PCT)
Prior art keywords
iab
node
message
rrc reconfiguration
iab node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2020/122610
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English (en)
French (fr)
Inventor
贾美艺
李国荣
路杨
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Fujitsu Ltd
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Fujitsu Ltd
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Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to EP20958126.3A priority Critical patent/EP4236449A4/en
Priority to PCT/CN2020/122610 priority patent/WO2022082543A1/zh
Priority to CN202080106368.XA priority patent/CN116349293A/zh
Priority to KR1020237013262A priority patent/KR20230070483A/ko
Priority to JP2023523658A priority patent/JP7643542B2/ja
Publication of WO2022082543A1 publication Critical patent/WO2022082543A1/zh
Priority to US18/134,631 priority patent/US20230254729A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/087—Reselecting an access point between radio units of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0247—Traffic management, e.g. flow control or congestion control based on conditions of the access network or the infrastructure network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to the field of communications.
  • IAB Integrated access and backhaul
  • a relay node ie an IAB-node (IAB-node)
  • IAB-node supports NR access and backhauling.
  • the backhaul may include a single hop or multiple hops.
  • the end point of the NR backhaul on the network side that is, the IAB-donor (IAB-donor), means a gNB that supports additional functions of the IAB.
  • IAB hosts may also be referred to as IAB host nodes.
  • the IAB node supports the function of gNB-DU (Distributed Unit, distributed unit), that is, IAB-DU.
  • the IAB-DU terminates the NR access interface to the terminal equipment and the next-hop IAB node, and terminates the F1 protocol to the gNB-CU function on the IAB host.
  • the IAB node also supports a subset of terminal equipment functions (UE functions), i.e.
  • IAB-MT which includes, for example, gNB-DUs connected to another IAB node or IAB host, gNB-CUs connected to the IAB host (Centralized Unit, centralized unit) and the physical layer, layer 2 (L2), RRC (Radio Resource Control, radio resource control) and NAS (Non-Access-Stratum, non-access layer) functions connected to the core network.
  • gNB-DUs connected to another IAB node or IAB host
  • gNB-CUs connected to the IAB host (Centralized Unit, centralized unit) and the physical layer, layer 2 (L2), RRC (Radio Resource Control, radio resource control) and NAS (Non-Access-Stratum, non-access layer) functions connected to the core network.
  • IAB host Centralized Unit, centralized unit
  • L2 Layer 2
  • RRC Radio Resource Control
  • NAS Non-Access-Stratum, non-access layer
  • An IAB node is connected to an IAB host by one or more hops.
  • the IAB host is the root node
  • the adjacent node on the IAB-DU interface of the IAB node is called the descendant node of the IAB node, that is, the descendant IAB node (descendant IAB-node).
  • the adjacent node on the MT interface is called the parent node, that is, the parent IAB-node.
  • migration of IAB nodes is required.
  • Migration of IAB nodes can also be referred to as topology adaptation of IAB nodes. For example, after measuring the link quality, an IAB node decides to migrate from the original path to a new path. The original path is called the source path, and the new path is called the target path. The IAB node that performs the migration is called the migration IAB node.
  • a migration or topology adaptation scenario of an IAB node may include migration or topology adaptation within an IAB host CU (IAB-donor-CU) and between IAB host CUs.
  • IAB-donor-CU IAB-donor-CU
  • both the source parent IAB node and the target parent IAB node are served by the same IAB-donor-CU.
  • the target parent IAB node can use a different IAB host DU (IAB-donor-DU) from the source parent IAB node; the source path and the target path can have a common node.
  • IAB-donor-DU IAB host DU
  • Rel-17eIAB supports inter-CU (inter-CU) IAB migration.
  • inter-CU inter-CU
  • the source parent IAB node and the target parent IAB node are composed of different IAB-donor- CU provides services.
  • the target parent IAB node uses a different IAB-donor-DU than the source parent IAB node.
  • the migration or topology adaptation process or mechanism allows migration of all or part of the IAB nodes directly or indirectly served by the migrated IAB node, i.e. child IAB nodes and/or Terminal device; it is assumed that at the new IAB-donor-CU, the parent-child node relationship (including the IAB node and the terminal device) does not change.
  • the migration or topology adaptation process of an IAB node between IAB-donor-CU involves the following three stages: (1) IAB-MT migration of the transplanted IAB node; (2) migration of the IAB-DU within the transplanted IAB node; and (3) The terminal equipment served by the transplanted IAB node and the child IAB node served by the IAB node, that is, the transplant of the IAB-MTs of the child node.
  • stages (1)-(3) may be mutually independent processes, and the execution order of stages (1)-(3) is not limited.
  • RLF radio link failure
  • phase (3) is performed first, that is, the migration of the terminal equipment provided by the transplanted IAB node is performed, for example, a signaling process similar to the IAB-MT handover in the transplanted IAB node is used, then there will be the following problems: Phase (3) is performed first, that is, when transplanting these terminal devices, there is no F1 connection between the transplanted IAB node and the target IAB host, then the terminal device and/or child IAB node served by the transplanted IAB node sends a response message to the transplanted IAB node ( RRC reconfiguration complete message) may be delivered to the source IAB host. That is, in this case, the target IAB host cannot know whether the terminal device and/or the child IAB node has completed phase (3), and cannot restart the IAB-donor-CU migration or topology adaptation process for IAB nodes And its interrupted data transfer.
  • embodiments of the present application provide a method and apparatus for migrating an IAB node.
  • a device for transplanting an IAB node comprising: a first receiving unit configured to receive a terminal served by the first IAB node The RRC reconfiguration complete message of the device and/or the sub-IAB (descendant IAB) node; and the first sending unit, which is used for sending the first uplink message including the RRC reconfiguration complete message to the target IAB (IAB- The donor node) or the source IAB host node sends the RRC reconfiguration complete message to the target IAB host node.
  • an apparatus for migrating an IAB node is applied to a first IAB host node, where the first IAB host node is a source IAB host node of the first IAB node, and the apparatus includes : a fifth receiving unit, configured to receive a second uplink message from the first IAB node, where the second uplink message includes an RRC reconfiguration complete message of the terminal equipment and/or child IAB node served by the first IAB node; and A fifth sending unit, configured to send the RRC reconfiguration complete message to the target IAB host node of the first IAB node.
  • an IAB node migration device the device is applied to a first IAB host node, the first IAB host node is a source IAB host node of the first IAB node, and the device includes : a seventh receiving unit, which is used for receiving a feedback message of the first downlink message including the first RRC reconfiguration message from the first IAB node; and a seventh sending unit, which is used for sending a feedback message to the first IAB node
  • the source parent IAB node sends a second downlink message, where the second downlink message includes a second RRC reconfiguration message.
  • a device for transplanting an IAB node is applied to a second IAB host node, where the second IAB host node is a target IAB host node of the first IAB node, and the device includes : the eighth receiving unit, which is used for receiving the first uplink message including the RRC reconfiguration complete message sent by the first IAB node through the target path; and/or, the ninth receiving unit, which is used for receiving from the source IAB host node
  • the Xn message or the NG message including the RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal equipment and/or sub-IAB node served by the first IAB node.
  • a network device includes the apparatus according to any one of the first to fourth aspects of the embodiments of the present application.
  • a communication system includes a first network device, a second network device, and a terminal device, where the first network device includes the second aspect according to the embodiments of the present application or
  • the second network device includes the apparatus according to the fourth aspect of the embodiments of the present application.
  • a communication system includes a first network device and a terminal device, and the first network device includes the second aspect or the third aspect or the third aspect according to the embodiments of the present application The device described in the four aspects.
  • a communication system where the communication system includes a first network device, a second network device, a third network device, and a terminal device, the first network device includes the first network device according to the embodiment of the present application
  • the second network device includes the device according to the fourth aspect of the embodiments of the present application
  • the third network device includes the first aspect of the embodiments of the present application. installation.
  • a communication system includes a first network device, a second network device, a third network device, a fourth network device, and a terminal device
  • the first network device includes
  • the second network device includes the apparatus according to the fourth aspect of the embodiment of the present application
  • the third network device includes the device according to the embodiment of the present application.
  • the fourth network device is a child node of the first IAB node.
  • a method for migrating an IAB node is provided.
  • the method is applied to a first IAB node, and the method includes: receiving a terminal device and/or a sub-IAB (descendant) served by the first IAB node.
  • IAB) node's RRC reconfiguration complete message ; and send the first uplink message containing the RRC reconfiguration complete message to the target IAB (IAB-donor) host node through the target path, or, through the source IAB host node to reset the RRC
  • the configuration complete message is sent to the target IAB host node.
  • a method for transplanting an IAB node is provided, and the method is applied to a first IAB host node, where the first IAB host node is a source IAB host node of the first IAB node, and the method Including: receiving a second uplink message from the first IAB node, where the second uplink message includes the RRC reconfiguration complete message of the terminal equipment and/or sub-IAB node served by the first IAB node; and the RRC reconfiguration complete message Sent to the target IAB host node of the first IAB node.
  • a method for transplanting an IAB node is provided.
  • the method is applied to a first IAB host node, where the first IAB host node is a source IAB host node of the first IAB node.
  • the method comprising: receiving a feedback message from the first IAB node including the first downlink message of the first RRC reconfiguration message; and sending a second downlink message to the source parent IAB node of the first IAB node, the second downlink message A second RRC reconfiguration message is included.
  • a method for transplanting an IAB node is provided.
  • the method is applied to a second IAB host node, where the second IAB host node is a target IAB host node of the first IAB node.
  • the method Including: receiving the first uplink message including the RRC reconfiguration complete message sent by the first IAB node through the target path; and/or, receiving the Xn message or NG message including the RRC reconfiguration complete message from the source IAB host node, the The RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the first IAB node.
  • a fourteenth aspect of the embodiments of the present application there is provided a computer-readable program, wherein when the program is executed in a migration apparatus or a network device of an IAB node, the program causes the IAB node to The transplanting apparatus or network device executes the method for transplanting an IAB node described in the eighth aspect or the ninth aspect or the tenth aspect of the embodiments of the present invention.
  • a storage medium storing a computer-readable program wherein the computer-readable program causes an IAB node migration apparatus or network device to execute the eighth aspect of the embodiments of the present invention Or the method for transplanting an IAB node according to the ninth aspect or the tenth aspect.
  • One of the beneficial effects of the embodiments of the present application is: sending the first uplink message including the RRC reconfiguration complete message to the target IAB host node through the target path, or sending the RRC reconfiguration complete message to the target IAB through the source IAB host node
  • the host node, the target IAB host node can obtain the RRC reconfiguration completion message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, so it can reconfigure the terminal device and/or the sub-IAB node.
  • Data transmission interrupted with the terminal device and/or the sub-IAB node for the purpose of performing the migration or topology adaptation process of the migrated IAB node between IAB-donor-CUs is started.
  • FIG. 1 is a schematic diagram of the overall architecture of the IAB according to an embodiment of the present application.
  • Fig. 2 is another schematic diagram of the overall architecture of the IAB according to an embodiment of the present application.
  • Fig. 3 is a schematic diagram of the protocol stack of the F1-U interface between IAB-DU and IAB-donor-CU;
  • Fig. 4 is a schematic diagram of the protocol stack of the F1-C interface between IAB-DU and IAB-donor-CU;
  • FIG. 5 is a schematic diagram of a protocol stack of an SRB between an IAB-MT and an IAB-donor-CU according to an embodiment of the present application;
  • FIG. 6 is a schematic diagram of a scenario in which an IAB node is transplanted or topology adaptive in an IAB-donor-CU according to an embodiment of the present application;
  • FIG. 7 is a schematic diagram of a scenario in which an IAB node is transplanted or topology adaptive between IAB-donor-CUs according to an embodiment of the present application;
  • FIG. 8 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 1 of the present application.
  • FIG. 9 is a schematic diagram of a method for implementing step 802 in Embodiment 1 of the present application.
  • FIG. 10 is a schematic diagram of the method for implementing step 803 in Embodiment 1 of the present application.
  • FIG. 11 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 2 of the present application.
  • FIG. 12 is another schematic diagram of a method for transplanting an IAB node according to Embodiment 2 of the present application.
  • FIG. 13 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 3 of the present application.
  • FIG. 14 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 4 of the present application.
  • FIG. 15 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 5 of the present application.
  • FIG. 16 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 6 of the present application.
  • FIG. 17 is a schematic diagram of a device for transplanting an IAB node according to Embodiment 7 of the present application.
  • FIG. 19 is a schematic diagram of an IAB node transplant apparatus according to Embodiment 8 of the present application.
  • FIG. 20 is another schematic diagram of the device for transplanting an IAB node according to Embodiment 8 of the present application.
  • FIG. 21 is a schematic diagram of a device for transplanting an IAB node according to Embodiment 9 of the present application.
  • FIG. 22 is a schematic block diagram of a system configuration of a network device according to Embodiment 10 of the present invention.
  • FIG. 23 is a schematic block diagram of a system configuration of a network device according to Embodiment 11 of the present invention.
  • FIG. 24 is a schematic block diagram of a system configuration of a network device according to Embodiment 12 of the present invention.
  • FIG. 25 is a schematic diagram of a communication system according to Embodiment 13 of the present application.
  • 26 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • FIG. 27 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • FIG. 28 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • FIG. 29 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • FIG. 30 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • FIG. 31 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • FIG. 32 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of numelation, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be referred to by these terms restricted.
  • the term “and/or” includes any and all combinations of one or more of the associated listed items.
  • the terms “comprising”, “including”, “having”, etc. refer to the presence of stated features, elements, elements or components, but do not preclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Long Term Evolution Enhanced (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access) and so on.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Enhanced
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to communication protocols at any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • Network device refers to, for example, a device in a communication system that connects a user equipment to a communication network and provides services for the user equipment.
  • Network devices may include but are not limited to the following devices: “node” and/or “donor” under the IAB architecture, base station (BS, Base Station), access point (AP, Access Point), sending and receiving Point (TRP, Transmission Reception Point), Broadcast Transmitter, Mobile Management Entity (MME, Mobile Management Entity), Gateway, Server, Radio Network Controller (RNC, Radio Network Controller), Base Station Controller (BSC, Base Station Controller) and many more.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (eg femto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low power node eg femto, pico, etc.
  • base station may include some or all of their functions, each base station may provide communication coverage for a particular geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” refers to a device that accesses a communication network through a network device and receives network services, and may also be called “Terminal Equipment” (TE, Terminal Equipment).
  • TE Terminal Equipment
  • a terminal device served by an IAB node or an IAB host under the IAB architecture For example, a terminal device served by an IAB node or an IAB host under the IAB architecture.
  • a terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • MS Mobile Station
  • SS Subscriber Station
  • AT Access Terminal
  • the terminal device may include but is not limited to the following devices: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • Cellular Phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication device
  • handheld device machine type communication device
  • laptop computer Cordless phones, smartphones, smart watches, digital cameras, and more.
  • the terminal device may also be a machine or device that performs monitoring or measurement, such as but not limited to: Machine Type Communication (MTC, Machine Type Communication) terminals, In-vehicle communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • FIG. 1 is a schematic diagram of an overall architecture of an IAB according to an embodiment of the present application.
  • the overall architecture of the IAB uses a duplex (SA) mode
  • FIG. 2 is another schematic diagram of the overall architecture of the IAB according to an embodiment of the present application.
  • the IAB overall architecture uses a dual-connect (EN-DC) mode.
  • dual connectivity mode the IAB node is connected to one MeNB via E-UTRA, and the IAB host acts as an SgNB to terminate the X2-C.
  • Fig. 3 is a schematic diagram of the protocol stack of the F1-U interface between IAB-DU and IAB-donor-CU
  • Fig. 4 is a schematic diagram of the protocol stack of the F1-C interface between IAB-DU and IAB-donor-CU
  • F1-U and F1-C are described by taking the 2-hop backhaul as an example.
  • F1-U and F1-C use the IP transport layer between IAB-DU and IAB-donor-CU.
  • F1-U and F1-C have security protection.
  • the IP layer is transmitted through the Backhaul Adaptation Protocol (BAP) sublayer to ensure multi-hop routing; the IP layer can also be used for non-F1 services, such as operating Maintenance management (Operation Administration and Maintenance, OAM) business.
  • BAP Backhaul Adaptation Protocol
  • OAM Operating Maintenance management
  • BAP PDUs are transmitted by a BH RLC channel (channel); on each BH link (BH link), multiple BH RLC channels can be configured, This allows traffic prioritization and QoS (Quality of Service) enforcement (QoS enforcement).
  • QoS Quality of Service
  • each IAB node and the BAP entity on the IAB-donor-DU perform the mapping of the BH RLC channel of the BAP PDUs.
  • FIG. 5 is a schematic diagram of a protocol stack of an SRB between an IAB-MT and an IAB-donor-CU according to an embodiment of the present application.
  • the IAB-MT for an IAB node working in the EN-DC mode, the IAB-MT also establishes one or more DRBs with the IAB-donor-CU, which can be used for, for example, transmitting OAM services.
  • DRBs For SA mode, the establishment of DRBs is optional. These SRBs and DRBs are transported between this IAB-MT and its parent node via the Uu interface channel.
  • FIG. 6 is a schematic diagram of a scenario in which an IAB node is transplanted or topology adaptive in an IAB-donor-CU according to an embodiment of the present application.
  • IAB-node 5 is the transplanted IAB node
  • IAB-node 3 is the source parent IAB node of IAB-node
  • IAB-node 4 is the target parent IAB node of IAB-node
  • IAB-node 3 and IAB-node 4 is connected to the same IAB-donor-CU and to a different IAB-donor-DU.
  • UE1 is a terminal device served by IAB-node 5
  • IAB-node 6 is a child IAB node served by IAB-node 5.
  • FIG. 7 is a schematic diagram of a scenario in which an IAB node is transplanted or topology adaptive between IAB-donor-CUs according to an embodiment of the present application.
  • IAB-node 5 is the transplant node
  • IAB-node 3 is the source parent IAB node of IAB-node 5
  • IAB-node 4 is the target parent IAB node of IAB-node 5
  • IAB-node 3 and IAB -node 4 is connected to a different IAB-donor-CU as well as a different IAB-donor-DU.
  • UE1 is a terminal device served by IAB-node 5
  • IAB-node 6 is a child IAB node served by IAB-node 5.
  • the migration of the IAB-MT of the IAB node means that the IAB-MT of the IAB-node 5 is removed from the source path switch to the target path; for stage (2), the migration of the IAB-DU within the IAB node means switching the IAB-DU of IAB-node 5 from IAB-donor-CU1 to IAB-donor-CU2; for stage ( 3) Transplanting the terminal equipment served by the IAB node and the child IAB node served by the IAB node, that is, the transplant of the IAB-MTs of the child node means the handover of the IAB-node 6 and the UE1.
  • stage (3) is performed first, and the terminal device served by the IAB node and the IAB node service are transplanted.
  • the migration of the IAB-MTs of the child IAB node is the child node, that is, the handover between IAB-node 6 and UE1 is performed first, and the signaling process similar to the IAB-MT handover in the transplanted IAB node will have the following problems: due to the first stage (3), that is, there is no F1 connection between IAB-node 5 and IAB-donor-CU2, then the RRC reconfiguration complete message sent by IAB-node 6 and UE1 to IAB-node 5 may be passed to IAB-donor-CU1 .
  • IAB-donor-CU2 cannot know whether IAB-node 6 and UE1 have completed the handover, and cannot restart the migration or topology adaptation process of IAB-node 5 between IAB-donor-CU1 and IAB-donor-CU2. its interrupted data transfer.
  • An embodiment of the present application provides a method for migrating an IAB node, and the apparatus is applied to a first IAB node.
  • FIG. 8 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 1 of the present application. As shown in Figure 8, the method includes:
  • Step 801 Receive an RRC reconfiguration complete message of the terminal equipment and/or sub-IAB node served by the first IAB node;
  • Step 802 Send the first uplink message including the RRC reconfiguration complete message to the target IAB host node through the target path, or,
  • Step 803 Send the RRC reconfiguration complete message to the target IAB host node through the source IAB host node.
  • the target IAB host can obtain the RRC reconfiguration completion message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can start over.
  • the first IAB node is a transplanted IAB node.
  • the terminal device served by the first IAB node may be at least one terminal device, and the child IAB node served by the first IAB node may be at least one child node.
  • the terminal device and/or sub-IAB node that sends the RRC reconfiguration complete message to the first IAB node may be all terminal devices and/or all sub-IAB nodes served by the first IAB node, or may be some terminals served by the first IAB node Devices and/or some child IAB nodes.
  • the source IAB host node is also called the source IAB host, which indicates the end point of the network side backhauling on the source path;
  • the target IAB host node is also called the target IAB host, which indicates that the network side is on the target path The end point of the return.
  • the first IAB node receives the RRC reconfiguration complete message of the terminal equipment and/or the child IAB node served by the first IAB node, and the RRC reconfiguration complete message is the target of the terminal equipment and/or the child IAB node.
  • the configuration in the RRC reconfiguration message including the security configuration configured by the target IAB host node, is applied, and the password configured by the target IAB host node is sent to the first IAB node using the password configured by the target IAB host node.
  • Key protected (integrity protected and encrypted) RRC reconfiguration complete message is used to the first IAB node.
  • step 802 the first IAB node sends the first uplink message including the RRC reconfiguration complete message to the target IAB host node through the target path.
  • the target path is an F1 interface between a distribution unit (DU) of the first IAB node and a centralized unit (CU) of the target IAB host node.
  • DU distribution unit
  • CU centralized unit
  • the first upstream message is the first F1 message.
  • the F1 message refers to a control message transmitted through the F1 interface;
  • the F1 interface refers to the interface between the IAB-DU and the IAB-donor-CU.
  • the first F1 message may be at least one of a terminal device context establishment response message and a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for at least one of the RRC reconfiguration complete messages, the RRC reconfiguration complete message is sent.
  • the terminal device that completes the message is the same or different from the terminal device associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the terminal device context establishment response message or the terminal device context modification response message includes two RRC reconfiguration complete messages, and one of the RRC reconfiguration complete messages comes from the terminal device context establishment response message or the terminal device context modification response message corresponding to The other RRC reconfiguration complete message comes from a terminal different from the terminal corresponding to the terminal device context establishment response message or the terminal device context modification response message.
  • the first F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • UL RRC Message Transfer uplink RRC message transfer
  • all RRC reconfiguration complete messages are included in one uplink RRC messaging message.
  • All RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB sub-nodes are included in a different uplink RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC messaging message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment served by one IAB node is included in an upstream RRC messaging message, and the RRC reconfiguration complete message sent by the IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • the method may further include:
  • Step 804 Receive the first indication information
  • the first indication information is used to indicate that the RRC reconfiguration complete message is an RRC reconfiguration complete message protected by the security configuration configured by the target IAB home node, or to indicate that the RRC reconfiguration complete message is sent to the target IAB home node , or instruct the first IAB node to store the RRC reconfiguration complete message.
  • step 804 may be performed simultaneously with step 801, or may be performed sequentially, and this embodiment of the present application does not limit the execution order of these two steps.
  • the terminal device and/or the sub-IAB node when sending the RRC reconfiguration complete message to the first IAB node, the terminal device and/or the sub-IAB node includes the first indication information at the lower layer and sends it to the first IAB node.
  • the first indication information is used to indicate an RRC message in the same RLC PDU or MAC PDU.
  • the first indication information is included in the RLC group header, or included in the MAC group header.
  • the MAC layer or the RLC layer or the BAP layer stores the RRC Reconfiguration complete message.
  • the first IAB node receives a data packet sent by a terminal device and/or a sub-IAB node, the MAC layer unpacks and receives the first indication information and a MAC SDU, and the MAC layer stores the MAC SDU; or, the first IAB The node receives a data packet sent by a terminal device and/or a sub-IAB node, the RLC layer unpacks and receives the first indication information and an RLC SDU, and the RLC layer stores the RLC SDU.
  • the first indication information may also be included in the BAP group header, and the BAP layer of the IAB-MT or IAB-DU stores the RRC reconfiguration complete message .
  • the BAP of the IAB-DU of the first IAB node may also transmit the first indication information to the BAP layer of the IAB-MT.
  • the method may further include: the MAC layer of the IAB-DU of the first IAB node transmits the first indication information to the RLC layer.
  • the first IAB node receives a data packet sent by a terminal device and/or a sub-IAB node, the MAC layer unpacks and receives the first indication information and an RLC SDU, and the MAC layer uses the first indication information and the MAC SDU.
  • the RLC PDU is submitted to the RLC layer, the RLC layer unpacks the RLC SDU, and stores the RLC SDU.
  • the MAC layer of the IAB-DU of the first IAB node transmits the first indication information to the BAP layer.
  • the first IAB node receives a data packet sent by a terminal device and/or a sub-IAB node, the MAC layer unpacks and receives the first indication information and an RLC SDU, and the MAC layer uses the first indication information and the MAC SDU.
  • the RLC PDU is submitted to the RLC layer
  • the RLC layer unpacks to obtain the RLC SDU
  • submits the first indication information and the RLC SDU that is, the BAP PDU, to the BAP layer
  • the BAP layer unpacks to obtain the BAP SDU, and stores the BAP SDU.
  • the RLC layer of the IAB-DU of the first IAB node transmits the first indication information to the BAP layer.
  • the first IAB node receives a data packet sent by a terminal device and/or a sub-IAB node, the RLC layer unpacks and receives the first indication information and an RLC SDU, and the first indication information and the RLC SDU are
  • the BAP PDU is submitted to the BAP layer; the BAP layer unpacks the BAP SDU and stores the BAP SDU.
  • step 802 the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path.
  • FIG. 9 is a schematic diagram of a method for implementing step 802 in Embodiment 1 of the present application. As shown in Figure 9, the method includes:
  • Step 901 store the RRC reconfiguration complete message
  • Step 902 establishing the target path
  • Step 903 Send the first uplink message to the target IAB host node through the target path.
  • the RRC message may be invisible, that is, the first IAB node only knows to store one RLC/MAC SDU, and may not know that the RLC/MAC SDU includes content, such as the RRC reconfiguration complete message.
  • the first IAB node when receiving an RRC reconfiguration complete message from a terminal device and/or sub-IAB node served by the first IAB node, the first IAB node first stores the RRC reconfiguration complete message, and establishes the RRC reconfiguration complete message. A target path, through which the first IAB node sends the first uplink message including the RRC reconfiguration complete message to the target IAB host node.
  • the source IAB host node sends a second downlink message to the source parent IAB node of the first IAB node, for example, the second downlink message is an F1 message, for example, the second downlink message is UE context modification request message (UE Context Modification Request) or downlink RRC message transfer (DL RRC Message Transfer) message), the second downlink message includes a second RRC reconfiguration message, and the second RRC reconfiguration message comes from the target IAB host.
  • the source parent IAB node of the first IAB node sends the second RRC reconfiguration message to the first IAB node.
  • the method may further include:
  • Step 904 Receive the second RRC reconfiguration message from the source parent IAB (parent IAB) node;
  • Step 905 Initiating a random access procedure to the target parent node of the first IAB node according to the second RRC reconfiguration message.
  • Step 906 Switch to the target path.
  • the source parent IAB node may interrupt the service with the first IAB node, so that the terminal equipment served by the first IAB node and/or the service of the child IAB node will also interrupt.
  • the first IAB node may control the service interruption of the terminal device and/or the sub-IAB node served by the first IAB node.
  • the first IAB node stores the received second RRC reconfiguration message from the source parent IAB node, and continues to perform service transmission with the terminal device and/or child IAB node served by the first IAB node until an indication or an implementation or
  • the service with the terminal device and/or the sub-IAB node is interrupted based on a timer or based on a number and/or ratio. In this way, the service interruption of the terminal device and/or the sub-IAB node served by the first IAB node can be reduced.
  • the first IAB node interrupts the service with the terminal device and/or the sub-IAB node.
  • the first condition may include at least one of the following conditions:
  • the first timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first configuration value, and/or the terminal equipment and/or child IAB node to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first proportion;
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or child IAB nodes served by the first IAB node or the received RRCs of the terminal equipment and/or child IAB nodes served by the first IAB node The number of feedbacks of reconfiguration messages or the number of received RRC reconfiguration complete messages of the terminal equipment and/or child IAB node served by the first IAB node reaches the second configuration value, and/or, the first IAB node sends The ratio of the RRC reconfiguration messages sent by the terminal equipment and/or sub-IAB nodes served by the first IAB node or the feedback of the RRC reconfiguration messages received by the terminal equipment and/or sub-IAB nodes served by the first IAB node The ratio or the ratio of the received RRC reconfiguration complete messages of the terminal equipment and/or the sub-IAB node served by the first IAB node reaches the second ratio.
  • the first IAB node may interrupt traffic with the terminal device and/or the child IAB node based on an indication, eg, based on implementation. For example, when all terminal devices and/or sub-IAB nodes serving the first IAB node send RRC reconfiguration messages or receive RRC reconfiguration complete messages from most of the terminal devices and/or sub-IAB nodes, interrupt the communication with the terminal device. And/or the service of the child IAB node applies the new configuration in the second RRC reconfiguration message from the source parent IAB node previously stored, and initiates a random access procedure to the target parent IAB node.
  • an indication eg, based on implementation. For example, when all terminal devices and/or sub-IAB nodes serving the first IAB node send RRC reconfiguration messages or receive RRC reconfiguration complete messages from most of the terminal devices and/or sub-IAB nodes, interrupt the communication with the terminal device. And/or the service of the child IAB node applies the new configuration in the second RRC reconfiguration message from the source parent IAB
  • the communication with all these terminal devices and sub-IAB nodes is interrupted.
  • the service of the node or the service of the terminal equipment and sub-IAB nodes that have received the RRC reconfiguration complete message may be interrupted.
  • the first IAB node may interrupt the service with the terminal device and/or the sub-IAB node based on the timer. For example, when the first timer times out, the service with the terminal device and/or the child IAB node being served is interrupted, and the previously stored second RRC reconfiguration message from the source parent IAB node is applied to initiate a notification to the target parent IAB node. random access procedure.
  • the first timer may be started immediately when the first IAB node receives the value of the first timer, or, it may also be that it receives the value of the first timer and receives the message from the target IAB transmitted by the source parent IAB node.
  • the second RRC reconfiguration message of the host node starts the first timer.
  • the service with the serving terminal device is interrupted.
  • the service with the serving child IAB node is interrupted.
  • the service with the serving terminal device and the sub-IAB node is interrupted.
  • the first IAB node may interrupt communication with the terminal device based on the number and/or ratio of terminal devices and/or sub-IAB nodes, or the number and/or ratio of messages sent, or the number and/or ratio of received messages or feedback. and/or child IAB node services, for example,
  • the first IAB node When the first IAB node sends an RRC reconfiguration message to it or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it, the number of terminal devices and/or sub-IAB nodes reaches the first configuration value, and/or the terminal equipment and/or sub-IAB to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it When the proportion of nodes reaches the first proportion, the first IAB node interrupts services with all these terminal devices and/or sub-IAB nodes, or interrupts the service or interrupts in the event of an RRC reconfiguration message sent to it or an RRC reconfiguration message sent by it.
  • Feedback of the service of the terminal equipment and/or the sub-IAB node that is, based on the feedback of the first IAB node sending an RRC reconfiguration message to it or receiving the feedback of the RRC reconfiguration message sent by it or receiving the RRC reconfiguration message sent by it.
  • the number and/or ratio of terminal equipment and/or sub-IAB nodes that complete the message is configured to interrupt services with the terminal equipment and/or the sub-IAB node.
  • the first IAB node interrupts the communication with the terminal device and/or the sub-I
  • the service of the child IAB node that is, based on the RRC reconfiguration message sent by the first IAB node to the terminal equipment and/or child IAB node served by the first IAB node or the terminal served by the first IAB node.
  • the business of the IAB node is based on the RRC reconfiguration message sent by the first IAB node to the terminal equipment and/or child IAB node served by the first IAB node or the terminal served by the first IAB node.
  • the number of terminal devices that the first IAB node sends an RRC reconfiguration message to or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first configuration value, and/ Or, when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it, or receives the RRC reconfiguration complete message sent by it, the ratio of terminal equipment reaches the first ratio, the first IAB node.
  • the IAB node interrupts the service with all these terminal devices or interrupts the service with these terminal devices to which the RRC reconfiguration message is sent or the feedback of the RRC reconfiguration message sent by it; or, when the first IAB node sends The number of RRC reconfiguration messages sent by the terminal equipment served by the first IAB node or the number of received feedbacks of RRC reconfiguration messages of the terminal equipment served by the first IAB node or the number of received RRC reconfiguration messages served by the first IAB node The number of RRC reconfiguration complete messages of the terminal device reaches the second configuration value, and/or the ratio of RRC reconfiguration messages sent by the first IAB node to the terminal device served by the first IAB node or the first IAB node received When the proportion of the feedback of the RRC reconfiguration messages of the terminal equipment served by the IAB node or the proportion of the RRC reconfiguration complete messages received from the terminal equipment served by the first IAB node reaches the second proportion, the first IAB node interrupts and all these The service of the terminal equipment or the
  • the number of child IAB nodes reaches the first configuration value.
  • the ratio of the child IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first ratio
  • the number of RRC reconfiguration complete messages of the child IAB node served by the first IAB node reaches the second configuration value, and/or the RRC reconfiguration sent by the first IAB node to the child IAB node served by the first IAB node
  • the proportion of messages or the proportion of the feedback of the RRC reconfiguration message of the child IAB node served by the first IAB node or the proportion of the received RRC reconfiguration complete message of the child IAB node served by the first IAB node reaches the first IAB node.
  • the first IAB node interrupts services with all these sub-IAB nodes or interrupts services with these sub-IAB nodes that have sent an RRC reconfiguration message to it or received feedback of the RRC reconfiguration message sent by it;
  • the first IAB node when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it, or receives the RRC reconfiguration complete message sent by it, the number of terminal devices and sub-IAB nodes reaches the first configuration value, and/or the ratio of terminal equipment and sub-IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback from the RRC reconfiguration message sent by it or receives an RRC reconfiguration complete message sent by it When the first ratio is reached, the first IAB node interrupts services with all these terminal devices and sub-IAB nodes or interrupts the terminal devices and sub-IABs to which the RRC reconfiguration message is sent or the feedback of the RRC reconfiguration message sent by it is received.
  • the number of feedbacks of the RRC reconfiguration messages or the number of received RRC reconfiguration completion messages of the terminal equipment and sub-IAB nodes served by the first IAB node reaches the second configuration value, and/or, the first IAB node reports to the The ratio of the RRC reconfiguration messages sent by the terminal equipment served by the first IAB node and the sub-IAB node or the ratio of the RRC reconfiguration messages received by the terminal equipment served by the first IAB node and the sub-IAB node.
  • the first IAB node interrupts the service with all these terminal devices and sub-IAB nodes or interrupts the RRC reconfiguration messages to which the first IAB node interrupts messages or services of terminal equipment and sub-IAB nodes that have received feedback of the RRC reconfiguration message sent by them.
  • the first IAB node when the first IAB node sends an RRC reconfiguration message to it or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it, the number of terminal devices reaches the first configuration value, And/or, when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it, the ratio of terminal equipment reaches the first ratio, The first IAB node interrupts the service with all these terminal equipment and sub-IAB nodes or interrupts the service with these terminal equipment and all sub-IAB nodes to which the RRC reconfiguration message has been sent or the feedback of the RRC reconfiguration message sent by it has been received; Or, when the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment served by the first IAB node or the number of feedbacks of RRC reconfiguration messages received from the terminal equipment served by the first IAB node or The number of received RRC recon
  • the number of child IAB nodes reaches the first configuration value.
  • the ratio of the child IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first ratio
  • the number of RRC reconfiguration messages sent by the first IAB node to the child IAB node served by the first IAB node or the number of RRC reconfiguration messages received by the child IAB node served by the first IAB node The number of feedbacks or the number of received RRC reconfiguration complete messages of the child IAB node served by the first IAB node reaches the second configuration value, and/or, the first IAB node sends the child IAB node served by the first IAB node to the child IAB node.
  • the ratio of the RRC reconfiguration messages sent by the node or the ratio of the received RRC reconfiguration messages of the child IAB node served by the first IAB node or the received RRC reconfiguration of the child IAB node served by the first IAB node When the ratio of completion messages reaches the second ratio, the first IAB node interrupts services with all these terminal devices and sub-IAB nodes or interrupts all terminal devices to which the RRC reconfiguration message was sent or the RRC reconfiguration message sent by it was received. Feedback of the child IAB node's business.
  • the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it.
  • the terminal equipment and/or the sub-IAB The proportion of nodes refers to the terminal equipment and/or sub-IAB to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it.
  • the proportion of terminal devices that the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it refers to: the first IAB node The number of terminal devices to which the node sends an RRC reconfiguration message or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it and the total number of terminal devices and sub-IAB nodes served by the first IAB node. quantity ratio.
  • the proportion of sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it refers to: The number of child IAB nodes to which the IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it and the total number of child IAB nodes of the first IAB node Ratio.
  • the ratio of terminal equipment and sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it refers to: The number of terminal devices and sub-IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback from the RRC reconfiguration message sent by it or receives an RRC reconfiguration complete message sent by it and the number of terminals served by the first IAB node The ratio of the total number of devices and child IAB nodes.
  • the RRC reconfiguration message sent by the first IAB node to the terminal device and/or sub-IAB node served by the first IAB node or received by the terminal device and/or the terminal device served by the first IAB node The ratio of the feedback of the RRC reconfiguration message of the child IAB node or the received RRC reconfiguration complete messages of the terminal equipment and/or child IAB node served by the first IAB node refers to: the first IAB node sends the first IAB node to the first IAB node.
  • the RRC reconfiguration message sent by the terminal equipment and/or child IAB node served by the IAB node or the feedback of the RRC reconfiguration message received by the terminal equipment and/or child IAB node served by the first IAB node or the received RRC reconfiguration message of the first IAB node The ratio of the number of RRC reconfiguration complete messages of terminal equipment and/or sub-IAB nodes served by an IAB node to the number of RRC reconfiguration messages sent by the first IAB node.
  • an RRC reconfiguration message sent by the first IAB node to a terminal device and/or sub-IAB node served by the first IAB node, or an RRC reconfiguration message received by the terminal device served by the first IAB node The ratio of the feedback of the RRC reconfiguration message or the received RRC reconfiguration complete message of the terminal equipment served by the first IAB node refers to: the first IAB node serves the terminal equipment and/or substations served by the first IAB node
  • the number of the RRC reconfiguration messages sent by the IAB node or the feedbacks of the RRC reconfiguration messages of the terminal equipment served by the first IAB node or the RRC reconfiguration complete messages received by the terminal equipment served by the first IAB node is equal to The ratio of the number of RRC reconfiguration messages sent by the first IAB node.
  • the first IAB node sends the RRC reconfiguration message to the child IAB node of the first IAB node or receives the feedback of the RRC reconfiguration message of the child IAB node of the first IAB node
  • the ratio of the received RRC reconfiguration complete messages of the child IAB node of the first IAB node refers to: the RRC reconfiguration message sent by the first IAB node to the child IAB node of the first IAB node or the received RRC reconfiguration message.
  • the number of feedbacks of the RRC reconfiguration messages of the child IAB nodes of the first IAB node or the received RRC reconfiguration complete messages of the child IAB nodes of the first IAB node is equal to the number of RRC reconfiguration messages sent by the first IAB node. quantity ratio.
  • the ratio of the received RRC reconfiguration completion messages of the terminal equipment and child IAB nodes served by the first IAB node refers to the RRC reconfiguration messages sent by the first IAB node to the terminal equipment and child IAB nodes served by the first IAB node
  • the number of messages or the received RRC reconfiguration messages of the terminal equipment and child IAB nodes served by the first IAB node or the received RRC reconfiguration complete messages of the terminal equipment and child IAB nodes served by the first IAB node is the same as the number of The ratio of the number of RRC reconfiguration messages sent by the first IAB node.
  • the first IAB node stores the received RRC reconfiguration complete message from the terminal equipment and/or sub-IAB node it serves, and transmits the first uplink message including the RRC reconfiguration complete message to the target through the target path IAB-donor-CU, completes the cross-IAB-donor-CU migration or handover or topology adaptation of the terminal device and/or sub-IAB node, so that the target IAB-donor-CU can restart with the terminal device and/or sub-IAB node Data transfer interrupted by the IAB node.
  • the method performs the switching of the IAB-MT, the IAB-DU of the transplanted IAB node and the terminal equipment and/or sub-IAB node served by the transplanted IAB node during the IAB node migration across the IAB-donor-CU or the topology adaptation process or
  • the signaling flow restriction of migration or topology adaptation is small, which ensures more flexible migration or topology adaptation process of IAB nodes across IAB-donor-CU.
  • the source IAB host node may also control the interruption of services with the first IAB node and the terminal equipment and/or sub-IAB nodes it serves.
  • the source IAB host node After the source IAB host node receives the handover feedback from the target IAB host node, the source IAB host node first sends the first downlink message including the first RRC reconfiguration message to the first IAB node, and the first RRC reconfiguration message comes from The target IAB host; after receiving the feedback message of the first downlink message from the first IAB node, the source IAB host node sends the second downlink message including the second RRC reconfiguration message to the source parent IAB node of the first IAB node . After receiving the second downlink message, the source parent IAB node of the first IAB node sends the second RRC reconfiguration message to the first IAB node. After receiving the second RRC reconfiguration message, the first IAB node interrupts the service of the terminal equipment and/or sub-IAB node it serves.
  • the first IAB node may be based on an instruction, an implementation, a timer, or a A quantity and/or ratio to send the feedback message of the first downlink message to the source IAB host node.
  • the first IAB node when the second condition is satisfied, sends a feedback message of the first downlink message to the source IAB host node.
  • the second condition may include at least one of the following conditions:
  • the second timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third configuration value, and/or the terminal equipment and/or child IAB node to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third ratio;
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or child IAB nodes served by the first IAB node or the received RRCs of the terminal equipment and/or child IAB nodes served by the first IAB node The number of feedbacks of reconfiguration messages or the number of received RRC reconfiguration completion messages of the terminal equipment and/or child IAB node served by the first IAB node reaches the fourth configuration value, and/or, the first IAB node sends The ratio of the RRC reconfiguration messages sent by the terminal equipment and/or sub-IAB nodes served by the first IAB node or the feedback of the RRC reconfiguration messages received by the terminal equipment and/or sub-IAB nodes served by the first IAB node The ratio or the ratio of the received RRC reconfiguration complete messages of the terminal equipment and/or the sub-IAB node served by the first IAB node reaches the fourth ratio.
  • the first IAB node may interrupt traffic with the terminal device and/or the child IAB node based on an indication, eg, based on implementation. For example, when all terminal devices and/or sub-IAB nodes serving the first IAB node send RRC reconfiguration messages or receive RRC reconfiguration complete messages from most of the terminal devices and/or sub-IAB nodes, the communication with the terminal device is interrupted. And/or the service of the child IAB node initiates a random access procedure to the target parent IAB node by applying the previously stored new configuration in the second RRC reconfiguration message from the source parent IAB node.
  • the communication with all these terminal devices and sub-IAB nodes is interrupted.
  • the service of the node or the service of the terminal equipment and sub-IAB nodes that have received the RRC reconfiguration complete message may be interrupted.
  • the first IAB node may interrupt the service with the terminal device and/or the sub-IAB node based on the timer. For example, when the second timer times out, the service with the terminal device and/or the child IAB node being served is interrupted, and the previously stored second RRC reconfiguration message from the source parent IAB node is applied to initiate a notification to the target parent IAB node. random access procedure.
  • the second timer may be started immediately when the first IAB node receives the value of the second timer, or it may be that it receives the value of the second timer and receives the message from the target IAB from the source parent IAB node.
  • the second RRC reconfiguration message of the host node starts the second timer.
  • the service with the serving terminal device is interrupted.
  • the service with the serving child IAB node is interrupted.
  • the service with the serving terminal device and the sub-IAB node is interrupted.
  • the first IAB node may interrupt communication with the terminal device based on the number and/or ratio of terminal devices and/or sub-IAB nodes, or the number and/or ratio of messages sent, or the number and/or ratio of received messages or feedback. and/or child IAB node services, for example,
  • the first IAB node When the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it, the number of terminal devices and/or sub-IAB nodes reaches the third configuration value, and/or the terminal equipment and/or sub-IAB to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it When the proportion of nodes reaches the third proportion, the first IAB node interrupts services with all these terminal devices and/or sub-IAB nodes, or interrupts the service or interrupts due to the time when the RRC reconfiguration message is sent to it or the RRC reconfiguration message sent by it is received.
  • Feedback of the service of the terminal equipment and/or the sub-IAB node that is, based on the feedback of the first IAB node sending an RRC reconfiguration message to it or receiving the feedback of the RRC reconfiguration message sent by it or receiving the RRC reconfiguration message sent by it.
  • the number and/or ratio of terminal equipment and/or sub-IAB nodes that complete the message is configured to interrupt services with the terminal equipment and/or the sub-IAB node.
  • the first IAB node interrupts the communication with the terminal device and/or the child IAB node
  • the service of the child IAB node that is, based on the RRC reconfiguration message sent by the first IAB node to the terminal equipment and/or child IAB node served by the first IAB node or the terminal served by the first IAB node.
  • the business of the IAB node is based on the RRC reconfiguration message sent by the first IAB node to the terminal equipment and/or child IAB node served by the first IAB node or the terminal served by the first IAB node.
  • the number of terminal devices to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third configuration value, and/ Or, when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it, or receives the RRC reconfiguration complete message sent by it, the ratio of terminal equipment reaches the third ratio, the first IAB node.
  • the IAB node interrupts the service with all these terminal devices or interrupts the service with these terminal devices to which the RRC reconfiguration message is sent or the feedback of the RRC reconfiguration message sent by it; or, when the first IAB node sends The number of RRC reconfiguration messages sent by the terminal equipment served by the first IAB node or the number of received feedbacks of RRC reconfiguration messages of the terminal equipment served by the first IAB node or the number of received RRC reconfiguration messages served by the first IAB node
  • the number of RRC reconfiguration complete messages of the terminal equipment reaches the fourth configuration value, and/or the ratio of RRC reconfiguration messages sent by the first IAB node to the terminal equipment served by the first IAB node or the first received RRC reconfiguration messages
  • the ratio of the feedback of the RRC reconfiguration messages of the terminal equipment served by the IAB node or the ratio of the received RRC reconfiguration complete messages of the terminal equipment served by the first IAB node reaches the fourth ratio, the first IAB node interrupts and all these The service of the
  • the number of child IAB nodes reaches the third configuration value.
  • the ratio of the child IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third ratio
  • the number of RRC reconfiguration complete messages of the child IAB node served by the first IAB node reaches the fourth configuration value, and/or the RRC reconfiguration sent by the first IAB node to the child IAB node served by the first IAB node
  • the proportion of messages or the proportion of the feedback of the RRC reconfiguration message of the child IAB node served by the first IAB node or the proportion of the received RRC reconfiguration complete message of the child IAB node served by the first IAB node reaches the first IAB node.
  • the first IAB node interrupts services with all these sub-IAB nodes or interrupts services with these sub-IAB nodes that have sent an RRC reconfiguration message to it or received feedback of the RRC reconfiguration message sent by it;
  • the first IAB node when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it, or receives the RRC reconfiguration complete message sent by it, the number of terminal devices and sub-IAB nodes reaches the third configuration value, and/or the ratio of terminal equipment and sub-IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback from the RRC reconfiguration message sent by it or receives an RRC reconfiguration complete message sent by it When the third ratio is reached, the first IAB node interrupts services with all these terminal devices and sub-IAB nodes or interrupts the terminal devices and sub-IABs to which the RRC reconfiguration message was sent or the feedback of the RRC reconfiguration message sent by it was received.
  • the number of feedbacks of the RRC reconfiguration messages or the number of received RRC reconfiguration completion messages of the terminal equipment and sub-IAB nodes served by the first IAB node reaches the fourth configuration value, and/or, the first IAB node sends the The ratio of the RRC reconfiguration messages sent by the terminal equipment served by the first IAB node and the sub-IAB node or the ratio of the RRC reconfiguration messages received by the terminal equipment served by the first IAB node and the sub-IAB node.
  • the first IAB node interrupts the service with all these terminal devices and sub-IAB nodes or interrupts the RRC reconfiguration messages to which the first IAB node interrupts messages or services of terminal equipment and sub-IAB nodes that have received feedback of the RRC reconfiguration message sent by them.
  • the first IAB node when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it, the number of terminal devices reaches the third configuration value, And/or, when the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it, the ratio of terminal equipment reaches a third ratio, The first IAB node interrupts the service with all these terminal equipment and sub-IAB nodes or interrupts the service with these terminal equipment and all sub-IAB nodes to which the RRC reconfiguration message has been sent or the feedback of the RRC reconfiguration message sent by it has been received; Or, when the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment served by the first IAB node or the number of feedbacks of RRC reconfiguration messages received from the terminal equipment served by the first IAB node or The number of received RRC
  • the number of child IAB nodes reaches the third configuration value.
  • the ratio of the child IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third ratio
  • the number of RRC reconfiguration messages sent by the first IAB node to the child IAB node served by the first IAB node or the feedback of the RRC reconfiguration messages of the child IAB node served by the first IAB node is received
  • the number of received RRC reconfiguration completion messages of the child IAB node served by the first IAB node reaches the fourth configuration value, and/or, the first IAB node sends the child IAB node served by the first IAB node to the child IAB node of the first
  • the ratio of sent RRC reconfiguration messages or the ratio of received feedback of RRC reconfiguration messages of the child IAB node served by the first IAB node or the received RRC reconfiguration of the child IAB node served by the first IAB node is completed When the ratio of messages reaches the fourth ratio, the first IAB node interrupts services with all these terminal devices and sub-IAB nodes or interrupts all terminal devices and those who have sent RRC reconfiguration messages to or received RRC reconfiguration messages sent by them. Feedback of the service of the child IAB node.
  • the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it.
  • the terminal equipment and/or the sub-IAB The proportion of nodes refers to the terminal equipment and/or sub-IAB to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it.
  • the proportion of terminal devices that the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it refers to: the first IAB node The number of terminal devices to which the node sends an RRC reconfiguration message or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it and the total number of terminal devices and sub-IAB nodes served by the first IAB node. quantity ratio.
  • the proportion of sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it refers to: The number of child IAB nodes to which the IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it and the total number of child IAB nodes of the first IAB node Ratio.
  • the ratio of terminal equipment and sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to it or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it refers to: The number of terminal devices and sub-IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback from the RRC reconfiguration message sent by it or receives an RRC reconfiguration complete message sent by it and the number of terminals served by the first IAB node The ratio of the total number of devices and child IAB nodes.
  • the RRC reconfiguration message sent by the first IAB node to the terminal device and/or sub-IAB node served by the first IAB node or received by the terminal device and/or the terminal device served by the first IAB node The ratio of the feedback of the RRC reconfiguration message of the child IAB node or the received RRC reconfiguration complete messages of the terminal equipment and/or child IAB node served by the first IAB node refers to: the first IAB node sends the first IAB node to the first IAB node.
  • the RRC reconfiguration message sent by the terminal equipment and/or child IAB node served by the IAB node or the feedback of the RRC reconfiguration message received by the terminal equipment and/or child IAB node served by the first IAB node or the received RRC reconfiguration message of the first IAB node The ratio of the number of RRC reconfiguration complete messages of terminal equipment and/or sub-IAB nodes served by an IAB node to the number of RRC reconfiguration messages sent by the first IAB node.
  • an RRC reconfiguration message sent by the first IAB node to a terminal device and/or sub-IAB node served by the first IAB node, or an RRC reconfiguration message received by the terminal device served by the first IAB node The ratio of the feedback of the RRC reconfiguration message or the received RRC reconfiguration complete message of the terminal equipment served by the first IAB node refers to: the first IAB node serves the terminal equipment and/or substations served by the first IAB node
  • the number of the RRC reconfiguration messages sent by the IAB node or the feedbacks of the RRC reconfiguration messages of the terminal equipment served by the first IAB node or the RRC reconfiguration complete messages received by the terminal equipment served by the first IAB node is equal to The ratio of the number of RRC reconfiguration messages sent by the first IAB node.
  • the first IAB node sends the RRC reconfiguration message to the child IAB node of the first IAB node or receives the feedback of the RRC reconfiguration message of the child IAB node of the first IAB node
  • the ratio of the received RRC reconfiguration complete messages of the child IAB node of the first IAB node refers to: the RRC reconfiguration message sent by the first IAB node to the child IAB node of the first IAB node or the received RRC reconfiguration message.
  • the number of feedbacks of the RRC reconfiguration messages of the child IAB nodes of the first IAB node or the received RRC reconfiguration complete messages of the child IAB nodes of the first IAB node is equal to the number of RRC reconfiguration messages sent by the first IAB node. quantity ratio.
  • the ratio of the received RRC reconfiguration completion messages of the terminal equipment and child IAB nodes served by the first IAB node refers to the RRC reconfiguration messages sent by the first IAB node to the terminal equipment and child IAB nodes served by the first IAB node
  • the number of messages or the received RRC reconfiguration messages of the terminal equipment and child IAB nodes served by the first IAB node or the received RRC reconfiguration complete messages of the terminal equipment and child IAB nodes served by the first IAB node is the same as the number of The ratio of the number of RRC reconfiguration messages sent by the first IAB node.
  • the RRC reconfiguration message sent by the first IAB node to the terminal device and/or sub-IAB node served by the first IAB node or received by the terminal device and/or the terminal device served by the first IAB node The ratio of the feedback of the RRC reconfiguration message of the child IAB node or the received RRC reconfiguration complete messages of the terminal equipment and/or child IAB node served by the first IAB node refers to: the first IAB node sends the first IAB node to the first IAB node.
  • the RRC reconfiguration message sent by the terminal equipment and/or child IAB node served by the IAB node or the feedback of the RRC reconfiguration message received by the terminal equipment and/or child IAB node served by the first IAB node or the received RRC reconfiguration message of the first IAB node The ratio of the number of RRC reconfiguration complete messages of terminal equipment and/or sub-IAB nodes served by an IAB node to the number of RRC reconfiguration messages sent by the first IAB node.
  • an RRC reconfiguration message sent by the first IAB node to a terminal device and/or sub-IAB node served by the first IAB node, or an RRC reconfiguration message received by the terminal device served by the first IAB node The ratio of the feedback of the RRC reconfiguration message or the received RRC reconfiguration complete message of the terminal equipment served by the first IAB node refers to: the first IAB node serves the terminal equipment and/or substations served by the first IAB node
  • the number of the RRC reconfiguration messages sent by the IAB node or the feedbacks of the RRC reconfiguration messages of the terminal equipment served by the first IAB node or the RRC reconfiguration complete messages received by the terminal equipment served by the first IAB node is equal to The ratio of the number of RRC reconfiguration messages sent by the first IAB node.
  • the first IAB node sends the RRC reconfiguration message to the child IAB node of the first IAB node or receives the feedback of the RRC reconfiguration message of the child IAB node of the first IAB node
  • the ratio of the received RRC reconfiguration complete messages of the child IAB node of the first IAB node refers to: the RRC reconfiguration message sent by the first IAB node to the child IAB node of the first IAB node or the received RRC reconfiguration message.
  • the number of feedbacks of the RRC reconfiguration messages of the child IAB nodes of the first IAB node or the received RRC reconfiguration complete messages of the child IAB nodes of the first IAB node is equal to the number of RRC reconfiguration messages sent by the first IAB node. quantity ratio.
  • the first IAB node stores the received RRC reconfiguration complete message from the terminal equipment and/or sub-IAB node it serves, and transmits the first uplink message including the RRC reconfiguration complete message to the target through the target path IAB-donor-CU, completes the cross-IAB-donor-CU migration or handover or topology adaptation of the terminal device and/or sub-IAB node, so that the target IAB-donor-CU can restart with the terminal device and/or sub-IAB node Data transfer interrupted by the IAB node.
  • the method controls the IAB-MT, IAB-DU of the first IAB node and the terminal equipment and/or sub-IAB node served by the first IAB node in the IAB node migration or topology adaptation process across the IAB-donor-CU.
  • the execution sequence of handover, migration or topology adaptation reduces the service interruption of the first IAB node and its service terminal equipment and the terminal equipment served by the sub-IAB node.
  • the method may further include:
  • Step 805 Receive the first downlink message from the source IAB host node,
  • the first downlink message includes a first RRC reconfiguration message, and the first RRC reconfiguration message includes a key configured by the target IAB home node. For example, after the source IAB host node receives the handover feedback from the target IAB host node, the source IAB host node first sends the first downlink message including the first RRC reconfiguration message to the first IAB node.
  • the first downlink message is the second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the second indication information is an "indication" based on which the first IAB node interrupts the service with the terminal device and/or the sub-IAB node in the above first and second conditions.
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate the random access procedure with the target parent IAB node, the distribution unit of the first IAB node and the at least one of the centralized unit of the target IAB host node establishing the F1 interface and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • the feedback of the first RRC reconfiguration message is, for example, a UE context modification response message or an uplink RRC messaging message.
  • the number of terminal devices refers to the aforementioned first configuration value or the second configuration value
  • the ratio of terminal devices refers to the aforementioned first ratio or the second ratio
  • the number of terminal devices refers to the aforementioned first ratio or second ratio.
  • the third configuration value or the fourth configuration value, the ratio of the terminal device refers to the third ratio or the fourth ratio described above.
  • the specific values of the first configuration value, the second configuration value, the third configuration value, the fourth configuration value, and the first ratio, the second ratio, the third ratio, and the fourth ratio can be determined according to the actual situation. set up.
  • one configuration value may be used for terminal devices and child IAB nodes served by the first IAB node; or,
  • a ratio is used for terminal devices and child IAB nodes served by the first IAB node.
  • 2 scales are used, eg, one scale for terminal equipment and one scale for child IAB nodes; or,
  • one configuration value and one scale eg. one configuration value for terminal devices and one scale for child IAB nodes, or, one scale for child terminal devices and one scale Configuration values are used for child IAB nodes.
  • a value of the timer may be used for the terminal equipment and sub-IAB nodes served by the first IAB node.
  • two values of the timer can be used, one value for the terminal device and one value for the sub-IAB node.
  • FIG. 10 is a schematic diagram of a method for implementing step 803 in Embodiment 1 of the present application. As shown in Figure 10, the method includes:
  • Step 1001 the first IAB node sends a second uplink message containing the RRC reconfiguration complete message to the source IAB host node;
  • Step 1002 the source IAB host node sends the RRC reconfiguration complete message to the target IAB host node.
  • the first IAB node transmits the RRC reconfiguration complete message included in the second uplink message to the target IAB-donor-CU via the source IAB-donor-CU to complete the migration or handover of the terminal device across the IAB-donor-CU Or topology adaptation, so that the target IAB-donor-CU can resume the interrupted data transmission with the terminal device.
  • this method has little impact on the current IAB node, and can apply new functions faster, that is, the migration or switching or topology adaptation of IAB nodes across IAB-donor-CU, so that the whole system can better perform IAB-donor-CU. Load balancing among donor-CUs, etc.
  • the source IAB host node may send the Xn message or the NG message including the RRC reconfiguration complete message to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message may include third indication information, where the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message or a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message; or,
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for at least one of the RRC reconfiguration complete messages, the RRC reconfiguration complete message is sent.
  • the terminal device that completes the message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the terminal device context establishment response message or the terminal device context modification response message includes two RRC reconfiguration complete messages, and one of the RRC reconfiguration complete messages comes from the terminal device context establishment response message or the terminal device context modification response message corresponding to The other RRC reconfiguration complete message comes from a terminal different from the terminal corresponding to the terminal device context establishment response message or the terminal device context modification response message.
  • the third F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • UL RRC Message Transfer uplink RRC message transfer
  • all RRC reconfiguration complete messages are included in one uplink RRC messaging message; or, all RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB child node
  • the reconfiguration complete message is included in a different uplink RRC messaging message; alternatively, the RRC reconfiguration complete message sent by the terminal equipment or IAB sub-node served by one IAB node is included in one uplink RRC messaging message, and sent by another IAB node.
  • the RRC reconfiguration complete message sent by the terminal equipment served by the IAB node or the IAB sub-node is included in a different uplink RRC messaging message; or, the RRC reconfiguration complete message sent by the terminal equipment served by an IAB node is included in an uplink
  • the RRC Messaging message and the RRC Reconfiguration Complete message sent by the IAB child nodes served by this IAB node are included in a different Uplink RRC Messaging message.
  • step 802 for the terminal equipment and/or sub-IAB nodes served by the first IAB node, step 802 may be adopted entirely, or step 803 may be adopted entirely, or step 802 may be partly adopted and step 803 may be partly adopted.
  • the RRC reconfiguration complete message includes a first RRC reconfiguration complete message and a second RRC reconfiguration complete message, where the first RRC reconfiguration complete message is the first terminal device and/or the first terminal device served by the first IAB node An RRC reconfiguration complete message generated by a child IAB node, the second RRC reconfiguration complete message is an RRC reconfiguration complete message generated by a second terminal device and/or a second child IAB node served by the first IAB node, the first The IAB node sends the first uplink message including the first RRC reconfiguration complete message to the target IAB host node through the target path, and the first IAB node sends the second uplink message including the second RRC reconfiguration complete message To the source IAB home node to send the second RRC reconfiguration complete message to the target IAB home node through the source IAB home node.
  • step 802 or step 803 may also be used to process the terminal equipment served by the sub-IAB node served by the first IAB node.
  • part of step 802 and part of step 803 may be used.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present application provides a method for migrating an IAB node, and the method is applied to a first IAB host node, where the first IAB host node is a source IAB host node of the first IAB node.
  • This method corresponds to Embodiment 1, and for the same content, reference may be made to the description in Embodiment 1.
  • FIG. 11 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 2 of the present application. As shown in Figure 11, the method includes:
  • Step 1101 Receive a second uplink message from the first IAB node, the second uplink message includes the RRC reconfiguration complete message of the terminal equipment and/or child IAB node served by the first IAB node;
  • Step 1102 Send the RRC reconfiguration complete message to the target IAB host node of the first IAB node.
  • the source IAB host node may send the Xn message or the NG message including the RRC reconfiguration complete message to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message may include third indication information, where the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message, or the third F1 message is an uplink RRC messaging message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message; or,
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for at least one of the RRC reconfiguration complete messages, the RRC reconfiguration complete message is sent.
  • the terminal device that completes the message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • all RRC reconfiguration complete messages are included in one uplink RRC messaging message; or, all RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB child node
  • the reconfiguration complete message is included in a different uplink RRC messaging message; alternatively, the RRC reconfiguration complete message sent by the terminal equipment or IAB sub-node served by one IAB node is included in one uplink RRC messaging message, and sent by another IAB node.
  • the RRC reconfiguration complete message sent by the terminal equipment served by the IAB node or the IAB sub-node is included in a different uplink RRC messaging message; or, the RRC reconfiguration complete message sent by the terminal equipment served by an IAB node is included in an uplink
  • the RRC Messaging message and the RRC Reconfiguration Complete message sent by the IAB child nodes served by this IAB node are included in a different Uplink RRC Messaging message.
  • the method further includes:
  • Step 1103 Send a first downlink message to the first IAB node, where the first downlink message includes a first RRC reconfiguration message;
  • Step 1104 Send a second downlink message to the source parent IAB node of the first IAB node, where the second downlink message includes a second RRC reconfiguration message.
  • step 1103 and step 1104 is not limited.
  • the second uplink message is also used as a feedback message of the first downlink message; or, the method further includes: receiving a feedback message of the first downlink message.
  • FIG. 12 is another schematic diagram of an IAB node migration method according to Embodiment 2 of the present application. As shown in Figure 12, the method includes:
  • Step 1201 Receive a feedback message from the first IAB node including the first downlink message of the first RRC reconfiguration message
  • Step 1202 Send a second downlink message to the source parent IAB node of the first IAB node, where the second downlink message includes a second RRC reconfiguration message.
  • the first IAB host node when the first IAB host node receives the feedback of the first RRC reconfiguration message from the first IAB node, it sends a second downlink message to the source parent IAB node of the first IAB node, the The second downlink message includes a second RRC reconfiguration message.
  • the method further includes:
  • Step 1203 Send the first downlink message to the first IAB node, where the first downlink message includes the first RRC reconfiguration message.
  • the first RRC reconfiguration message includes a key configured by the target IAB home node of the first IAB node.
  • the first downstream message is the second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the second indication information is an "indication" based on which the first IAB node interrupts the service with the terminal device and/or the sub-IAB node in the above first and second conditions.
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate the random access procedure with the target parent IAB node, the distribution unit of the first IAB node and the at least one of the centralized unit of the target IAB host node establishing the F1 interface and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present application provides a method for migrating an IAB node, and the method is applied to a second IAB host node, where the second IAB host node is a target IAB host node of the first IAB node.
  • This method corresponds to Embodiment 1, and for the same content, reference may be made to the description in Embodiment 1.
  • FIG. 13 is a schematic diagram of a method for transplanting an IAB node according to Embodiment 3 of the present application. As shown in Figure 13, the method includes at least one of the following steps:
  • Step 1301 Receive the first uplink message including the RRC reconfiguration complete message sent by the first IAB node through the target path; and/or,
  • Step 1302 Receive the Xn message or the NG message including the RRC reconfiguration complete message from the source IAB host node,
  • the RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the first IAB node.
  • step 802 for the terminal equipment and/or sub-IAB nodes served by the first IAB node, when step 802 is all adopted in Embodiment 1, correspondingly, in Embodiment 3, 1301 is also adopted in all; In Example 1, step 803 is all used, then correspondingly, in Embodiment 3, all of 1302 are used; when part of step 802 and part of step 803 are used in embodiment 1, then correspondingly in embodiment 3, part of the use of step 803 is used. Step 1301, and step 1302 is partially adopted.
  • the target path is an F1 interface between the distribution unit of the first IAB node and the centralized unit of the target IAB host node.
  • the RRC reconfiguration complete message from the source IAB host node is sent through the Xn interface or the NG interface.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present application provides a method for migrating an IAB node, and the method is applied to a first IAB node, a first IAB host node, and a second IAB host node, where the first IAB host node is the source IAB host of the first IAB node node, the second IAB host node is the target IAB host node of the first IAB node.
  • This method corresponds to Embodiments 1 to 3, and for the same content, reference can be made to the descriptions in Embodiments 1 to 3.
  • the second IAB node is the source parent IAB node of the first IAB node
  • the third IAB node is the target parent IAB node of the first IAB node
  • FIG. 14 is a schematic diagram of an IAB node migration method according to Embodiment 4 of the present application.
  • the first IAB node serves the first terminal device as an example for illustration, but the first IAB node can also serve other terminal devices, and the first IAB node can also serve at least one child IAB node.
  • the method includes:
  • Step 1401 The first IAB host node sends a first downlink message including a first RRC reconfiguration message to the first IAB node;
  • Step 1402 the first IAB node sends a feedback message of the first downlink message to the first IAB host node;
  • Step 1403 the first IAB node sends a first RRC reconfiguration message to the first terminal device
  • Step 1404 the first terminal device sends an RRC reconfiguration complete message to the first IAB node
  • Step 1405 the first IAB node controls the service interruption with the first terminal device based on the mechanism of implementation or timer or counter;
  • Step 1406 the first IAB host node sends a second downlink message including the second RRC reconfiguration message to the second IAB node;
  • Step 1407 the second IAB node sends a second RRC reconfiguration message to the first IAB node
  • Step 1408 the first IAB node initiates a random access procedure to the third IAB node according to the second RRC reconfiguration message.
  • Step 1409 The first IAB node sends the first uplink message including the RRC reconfiguration complete message to the second IAB host node through the F1 interface.
  • the method provides for switching or switching of the IAB-MT, IAB-DU of the transplanted IAB node and the terminal equipment and/or sub-IAB node served by the transplanted IAB node during the migration of the IAB node across the IAB-donor-CU or the topology adaptation process.
  • the signaling flow restriction of migration or topology adaptation is small, which ensures more flexible migration or topology adaptation process of IAB nodes across IAB-donor-CU.
  • step 1401 and step 1406 there is no restriction on the execution order between step 1401 and step 1406 and between step 1405 and step 1407 .
  • step 1401 precedes step 1402
  • step 1401 precedes step 1403
  • step 1403 precedes step 1404
  • step 1405 precedes step 1408, and step 1408 precedes step 1409.
  • step 1409 precedes step 1409.
  • the first downlink message and the second downlink message are not restricted in order; after the first IAB node receives the first downlink message, it applies a mechanism based on implementation or timer or counting; execution is based on implementation or timing
  • the mechanism of the timer or counting and the reception of the second RRC reconfiguration message from the second IAB node are not limited in order.
  • the first IAB node stores the received RRC reconfiguration complete message from the terminal equipment and/or sub-IAB node it serves, and transmits the first uplink message including the RRC reconfiguration complete message through the target path.
  • To the target IAB-donor-CU complete the cross-IAB-donor-CU migration or handover or topology adaptation of the terminal device and/or sub-IAB node, so that the target IAB-donor-CU can restart with the terminal device and/or or interrupted data transfer by the child IAB node.
  • the method performs the switching of the IAB-MT, the IAB-DU of the transplanted IAB node and the terminal equipment and/or sub-IAB node served by the transplanted IAB node during the IAB node migration across the IAB-donor-CU or the topology adaptation process or
  • the signaling flow restriction of migration or topology adaptation is small, which ensures more flexible migration or topology adaptation process of IAB nodes across IAB-donor-CU.
  • An embodiment of the present application provides a method for migrating an IAB node, and the method is applied to a first IAB node, a first IAB host node, and a second IAB host node, where the first IAB host node is the source IAB host of the first IAB node node, the second IAB host node is the target IAB host node of the first IAB node.
  • This method corresponds to Embodiments 1 to 3, and for the same content, reference can be made to the descriptions in Embodiments 1 to 3.
  • the second IAB node is the source parent IAB node of the first IAB node
  • the third IAB node is the target parent IAB node of the first IAB node
  • FIG. 15 is a schematic diagram of an IAB node migration method according to Embodiment 5 of the present application.
  • the first IAB node serves the first terminal device as an example for illustration, but the first IAB node can also serve other terminal devices, and the first IAB node can also serve at least one child IAB node.
  • the method includes:
  • Step 1501 The first IAB host node sends a first downlink message including a first RRC reconfiguration message to the first IAB node;
  • Step 1502 the first IAB node sends a first RRC reconfiguration message to the first terminal device
  • Step 1503 the first terminal device sends an RRC reconfiguration complete message to the first IAB node
  • Step 1504 the first IAB node controls to send the feedback message of the first downlink message to the first IAB host node based on the mechanism of implementation or timer or counter;
  • Step 1505 the first IAB node sends a feedback message of the first downlink message to the first IAB host node;
  • Step 1506 the first IAB host node sends a second downlink message including the second RRC reconfiguration message to the second IAB node;
  • Step 1507 the second IAB node sends a second RRC reconfiguration message to the first IAB node
  • Step 1508 the first IAB node initiates a random access procedure to the third IAB node according to the second RRC reconfiguration message.
  • Step 1509 The first IAB node sends a first uplink message including the RRC reconfiguration complete message to the second IAB host node through the F1 interface.
  • the method controls the IAB-MT, IAB-DU of the first IAB node and the terminal equipment and/or sub-IAB node served by the first IAB node in the process of IAB node migration or topology adaptation across the IAB-donor-CU.
  • the execution sequence of handover, migration or topology adaptation reduces the service interruption of the first IAB node and its service terminal equipment and the terminal equipment served by the sub-IAB node.
  • step 1506 is performed.
  • the first IAB node stores the received RRC reconfiguration complete message from the terminal equipment and/or sub-IAB node it serves, and transmits the first uplink message including the RRC reconfiguration complete message through the target path.
  • To the target IAB-donor-CU complete the cross-IAB-donor-CU migration or handover or topology adaptation of the terminal device and/or sub-IAB node, so that the target IAB-donor-CU can restart with the terminal device and/or or interrupted data transfer by the child IAB node.
  • the method controls the IAB-MT, IAB-DU of the first IAB node and the terminal equipment and/or sub-IAB node served by the first IAB node in the IAB node migration or topology adaptation process across the IAB-donor-CU.
  • the execution sequence of handover, migration or topology adaptation reduces the service interruption of the first IAB node and its service terminal equipment and the terminal equipment served by the sub-IAB node.
  • An embodiment of the present application provides a method for migrating an IAB node, and the method is applied to a first IAB node, a first IAB host node, and a second IAB host node, where the first IAB host node is the source IAB host of the first IAB node node, the second IAB host node is the target IAB host node of the first IAB node.
  • This method corresponds to Embodiments 1 to 3, and for the same content, reference can be made to the descriptions in Embodiments 1 to 3.
  • the second IAB node is the source parent IAB node of the first IAB node
  • the third IAB node is the target parent IAB node of the first IAB node
  • FIG. 16 is a schematic diagram of an IAB node migration method according to Embodiment 6 of the present application.
  • the first IAB node serves the first terminal device as an example for illustration, but the first IAB node can also serve other terminal devices, and the first IAB node can also serve at least one child IAB node.
  • the method includes:
  • Step 1601 the first IAB host node sends a first downlink message including a first RRC reconfiguration message to the first IAB node;
  • Step 1602 the first IAB node sends a feedback message of the first downlink message to the first IAB host node;
  • Step 1603 the first IAB node sends a first RRC reconfiguration message to the first terminal device
  • Step 1604 the first terminal device sends an RRC reconfiguration complete message to the first IAB node
  • Step 1605 the first IAB node sends a second uplink message including the RRC reconfiguration complete message to the first IAB host node through the F1 interface;
  • Step 1606 The first IAB host node sends an Xn message including the RRC reconfiguration complete message to the second IAB host node through the Xn interface.
  • the first IAB node transmits the RRC reconfiguration complete message included in the second uplink message to the target IAB-donor-CU via the source IAB-donor-CU, so as to complete the migration or handover of the terminal device across the IAB-donor-CU Or topology adaptation, so that the target IAB-donor-CU can resume the interrupted data transmission with the terminal device.
  • this method has little impact on the current IAB node, and can apply new functions faster, that is, the migration or switching or topology adaptation of IAB nodes across IAB-donor-CU, so that the whole system can better perform IAB-donor-CU. Load balancing among donor-CUs, etc.
  • step 1602 may be performed after step 1601, that is, after the first IAB node receives the first downlink message including the first RRC reconfiguration message, the first IAB node immediately hosts the first IAB The node sends a feedback message of the first downlink message.
  • the second uplink message is also used as a feedback message of the first downlink message, and step 1602 is not performed.
  • the first IAB node transmits the RRC reconfiguration complete message included in the second uplink message to the target IAB-donor-CU via the source IAB-donor-CU, so as to complete the cross IAB-donor-CU of the terminal device.
  • the migration or handover or topology adaptation enables the target IAB-donor-CU to resume the interrupted data transmission with the terminal device.
  • this method has little impact on the current IAB node, and can apply new functions faster, that is, the migration or switching or topology adaptation of IAB nodes across IAB-donor-CU, so that the whole system can better perform IAB-donor-CU. Load balancing among donor-CUs, etc.
  • An embodiment of the present application provides a device for transplanting an IAB node, and the device is applied to a first IAB node. Since the principle of the device for solving the problem is similar to that of the method in Embodiment 1, the specific implementation can refer to the implementation of the method described in Embodiment 1, and the same or related parts will not be repeated.
  • FIG. 17 is a schematic diagram of an apparatus for transplanting an IAB node according to Embodiment 7 of the present application. As shown in FIG. 17 , the apparatus 1700 includes:
  • a first receiving unit 1701 configured to receive an RRC reconfiguration complete message of a terminal device and/or sub-IAB node served by the first IAB node;
  • the first sending unit 1702 is configured to send the first uplink message including the RRC reconfiguration complete message to the target IAB host node through the target path, or send the RRC reconfiguration complete message to the target IAB through the source IAB host node host node.
  • FIG. 18 is a schematic diagram of the first sending unit in Embodiment 7 of the present application. As shown in FIG. 18 , the first sending unit 1702 includes:
  • a first storage unit 1801 which is used to store the RRC reconfiguration complete message
  • the second sending unit 1803 is configured to send the first uplink message to the target IAB host node through the target path.
  • the first sending unit 1702 may also include:
  • the first interruption unit 1804 is configured to interrupt the service with the terminal device and/or the sub-IAB node when the first condition is satisfied.
  • the first condition includes at least one of the following conditions:
  • the first timer times out
  • the number of terminal devices and/or sub-IAB nodes to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first configuration value, and/or, the terminal equipment and/or sub-IAB node to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the first proportion;
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or child IAB nodes served by the first IAB node or the received RRCs of the terminal equipment and/or child IAB nodes served by the first IAB node The number of feedbacks of reconfiguration messages or the number of received RRC reconfiguration completion messages of the terminal equipment and/or sub-IAB node served by the first IAB node reaches the second configuration value, and/or, the first IAB node sends The ratio of the RRC reconfiguration messages sent by the terminal equipment and/or sub-IAB nodes served by the first IAB node or the feedback of the RRC reconfiguration messages received by the terminal equipment and/or sub-IAB nodes served by the first IAB node The ratio or the ratio of the received RRC reconfiguration complete messages of the terminal equipment and/or the sub-IAB node served by the first IAB node reaches the second ratio.
  • the first sending unit 1702 may also include:
  • the third sending unit 1805 is configured to send a feedback message of the first downlink message to the source IAB host node when the second condition is satisfied.
  • the second condition includes at least one of the following conditions:
  • the second timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to or receives feedback from the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third configuration value, and/or the terminal equipment and/or sub-IAB node to which the first IAB node sends an RRC reconfiguration message or receives feedback of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the third ratio;
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or child IAB nodes served by the first IAB node or the received RRCs of the terminal equipment and/or child IAB nodes served by the first IAB node The number of feedbacks of reconfiguration messages or the number of received RRC reconfiguration completion messages of the terminal equipment and/or child IAB node served by the first IAB node reaches the fourth configuration value, and/or, the first IAB node sends The ratio of the RRC reconfiguration messages sent by the terminal equipment and/or sub-IAB nodes served by the first IAB node or the feedback of the RRC reconfiguration messages received by the terminal equipment and/or sub-IAB nodes served by the first IAB node The ratio or the ratio of the received RRC reconfiguration complete messages of the terminal device and/or the sub-IAB node served by the first IAB node reaches the fourth ratio.
  • the apparatus 1700 further includes:
  • the second receiving unit 1703 is configured to receive the first indication information
  • the first indication information is used to indicate that the RRC reconfiguration complete message is an RRC reconfiguration complete message protected by the security configuration configured by the target IAB home node, or to indicate that the RRC reconfiguration complete message is sent to the target IAB home node , or instruct the first IAB node to store the RRC reconfiguration complete message.
  • the first indication information is included in the RLC group header, or included in the MAC group header.
  • the apparatus 1700 further includes:
  • the second storage unit 1704 is used for the MAC layer or the RLC layer or the BAP layer of the distribution unit of the first IAB node to store the RRC reconfiguration complete message.
  • the first storage unit 1801 includes the second storage unit 1704 .
  • the apparatus further includes: a first transfer unit, which is used for the MAC layer of the distribution unit of the first IAB node to transfer the first indication information to the RLC layer.
  • a third storage unit which is used to store the RRC reconfiguration complete message in the BAP layer of the IAB-MT when the first IAB node IAB-DU receives the first indication information; or, a fourth storage unit , which is used to store the RRC reconfiguration complete message in the BAP layer of the IAB-DU when the first indication information comes from the sub-IAB node served by the first IAB node, or the second delivery unit, which is used for the first IAB node.
  • the MAC layer or the RLC layer of the IAB-DU of the IAB node transmits the first indication information to the BAP layer.
  • the first sending unit 1702 further includes:
  • a third receiving unit 1806, configured to receive the second RRC reconfiguration message from the source parent IAB (parent IAB) node;
  • a random access unit 1807 configured to initiate a random access procedure to the target parent node of the first IAB node according to the second RRC reconfiguration message
  • the first switching unit 1808 is used for switching to the target path.
  • the target path is an F1 interface between a distribution unit (DU) of the first IAB node and a centralized unit (CU) of the target IAB host node.
  • DU distribution unit
  • CU centralized unit
  • the first upstream message is the first F1 message.
  • the first F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message; or,
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for at least one of the RRC reconfiguration complete messages, the RRC reconfiguration complete message is sent.
  • the terminal device that completes the message is the same or different from the terminal device associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the first F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • UL RRC Message Transfer uplink RRC message transfer
  • all RRC reconfiguration complete messages are included in one uplink RRC messaging message; or, all RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB child node
  • the reconfiguration complete message is included in a different uplink RRC messaging message; alternatively, the RRC reconfiguration complete message sent by the terminal equipment or IAB sub-node served by one IAB node is included in one uplink RRC messaging message, and sent by another IAB node.
  • the RRC reconfiguration complete message sent by the terminal equipment served by the IAB node or the IAB sub-node is included in a different uplink RRC messaging message; or, the RRC reconfiguration complete message sent by the terminal equipment served by an IAB node is included in an uplink
  • the RRC Messaging message and the RRC Reconfiguration Complete message sent by the IAB child nodes served by this IAB node are included in a different Uplink RRC Messaging message.
  • the apparatus 1700 further includes:
  • the fourth receiving unit 1705 which is used for receiving the first downlink message from the source IAB host node,
  • the first downlink message includes a first RRC reconfiguration message, and the first RRC reconfiguration message includes a key configured by the target IAB home node.
  • the first downstream message is the second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate the random access procedure with the target parent IAB node, the distribution unit of the first IAB node and the at least one of the centralized unit of the target IAB host node establishing the F1 interface and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • the first sending unit 1702 further includes:
  • the fourth sending unit 1809 which is configured to send the second uplink message including the RRC reconfiguration complete message to the source IAB host node,
  • the RRC reconfiguration complete message is sent by the source IAB host node to the target IAB host node.
  • the RRC reconfiguration complete message is sent by the source IAB host node to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message includes third indication information, where the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message or a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message; or,
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for at least one of the RRC reconfiguration complete messages, the RRC reconfiguration complete message is sent.
  • the terminal device that completes the message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the third F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • UL RRC Message Transfer uplink RRC message transfer
  • all RRC reconfiguration complete messages are included in one uplink RRC messaging message; or, all RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB child node
  • the reconfiguration complete message is included in a different uplink RRC messaging message; alternatively, the RRC reconfiguration complete message sent by the terminal equipment or IAB sub-node served by one IAB node is included in one uplink RRC messaging message, and sent by another IAB node.
  • the RRC reconfiguration complete message sent by the terminal equipment served by the IAB node or the IAB sub-node is included in a different uplink RRC messaging message; or, the RRC reconfiguration complete message sent by the terminal equipment served by an IAB node is included in an uplink
  • the RRC Messaging message and the RRC Reconfiguration Complete message sent by the IAB child nodes served by this IAB node are included in a different Uplink RRC Messaging message.
  • the RRC reconfiguration complete message includes a first RRC reconfiguration complete message and a second RRC reconfiguration complete message, where the first RRC reconfiguration complete message is the first terminal device and/or the first terminal device served by the first IAB node An RRC reconfiguration complete message generated by a child IAB node, the second RRC reconfiguration complete message is an RRC reconfiguration complete message generated by a second terminal device and/or a second child IAB node served by the first IAB node, the first The IAB node sends the first uplink message including the first RRC reconfiguration complete message to the target IAB host node through the target path, and the first IAB node sends the second uplink message including the second RRC reconfiguration complete message To the source IAB home node to send the second RRC reconfiguration complete message to the target IAB home node through the source IAB home node.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present application provides an IAB node migration device, and the device is applied to a first IAB host node, where the first IAB host node is a source IAB host node of the first IAB node. Since the principle of the device for solving the problem is similar to that of the method in Embodiment 2, the specific implementation can refer to the implementation of the method described in Embodiment 2, and the same or related parts will not be repeated.
  • FIG. 19 is a schematic diagram of an apparatus for transplanting an IAB node according to Embodiment 8 of the present application. As shown in FIG. 19 , the apparatus 1900 includes:
  • a fifth receiving unit 1901 configured to receive a second uplink message from the first IAB node, the second uplink message including the RRC reconfiguration complete message of the terminal equipment and/or sub-IAB node served by the first IAB node;
  • the fifth sending unit 1902 is configured to send the RRC reconfiguration complete message to the target IAB host node of the first IAB node.
  • the fifth sending unit 1902 sends the Xn message or the NG message including the RRC reconfiguration complete message to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message includes third indication information, where the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message, or the third F1 message is an uplink RRC messaging message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message; or,
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for at least one of the RRC reconfiguration complete messages, the RRC reconfiguration complete message is sent.
  • the terminal device that completes the message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • all RRC reconfiguration complete messages are included in one uplink RRC messaging message; or, all RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB child node
  • the reconfiguration complete message is included in a different uplink RRC messaging message; alternatively, the RRC reconfiguration complete message sent by the terminal equipment or IAB sub-node served by one IAB node is included in one uplink RRC messaging message, and sent by another IAB node.
  • the RRC reconfiguration complete message sent by the terminal equipment served by the IAB node or the IAB sub-node is included in a different uplink RRC messaging message; or, the RRC reconfiguration complete message sent by the terminal equipment served by an IAB node is included in an uplink
  • the RRC Messaging message and the RRC Reconfiguration Complete message sent by the IAB child nodes served by this IAB node are included in a different Uplink RRC Messaging message.
  • the apparatus 1900 further includes:
  • a sixth sending unit 1903 configured to send a first downlink message to the first IAB node, where the first downlink message includes a first RRC reconfiguration message.
  • a seventh sending unit 1904 configured to send a second downlink message to the source parent IAB node of the first IAB node, where the second downlink message includes a second RRC reconfiguration message.
  • the second uplink message is also used as the feedback message of the first downlink message.
  • the apparatus 1900 further includes: a sixth receiving unit 1905, configured to receive a feedback message of the first downlink message.
  • FIG. 20 is another schematic diagram of the device for transplanting an IAB node according to Embodiment 8 of the present application. As shown in FIG. 20 , the device 2000 includes:
  • a seventh receiving unit 2001 configured to receive a feedback message including a first downlink message of a first RRC reconfiguration message from the first IAB node;
  • a seventh sending unit 2002 configured to send a second downlink message to the source parent IAB node of the first IAB node, where the second downlink message includes a second RRC reconfiguration message.
  • the first IAB host node when the first IAB host node receives the feedback of the first RRC reconfiguration message from the first IAB node, it sends a second downlink message to the source parent IAB node of the first IAB node, where the second downlink message includes The second RRC reconfiguration message.
  • the apparatus 2000 further includes:
  • the eighth sending unit 2003 is configured to send the first downlink message to the first IAB node, where the first downlink message includes the first RRC reconfiguration message.
  • the first RRC reconfiguration message includes the key configured by the target IAB home node of the first IAB node.
  • the first downstream message is the second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate the random access procedure with the target parent IAB node, the distribution unit of the first IAB node and the at least one of the centralized unit of the target IAB host node establishing the F1 interface and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present application provides an IAB node transplant apparatus, and the apparatus is applied to a second IAB host node, where the second IAB host node is a target IAB host node of the first IAB node. Since the principle of the device for solving the problem is similar to that of the method in Embodiment 3, the specific implementation can refer to the implementation of the method described in Embodiment 3, and the same or related parts will not be repeated.
  • FIG. 21 is a schematic diagram of a device for transplanting an IAB node according to Embodiment 9 of the present application. As shown in FIG. 21 , the device 2100 includes:
  • an eighth receiving unit 2101 configured to receive the first uplink message including the RRC reconfiguration complete message sent by the first IAB node through the target path; and/or,
  • the ninth receiving unit 2102 which is configured to receive the Xn message or the NG message including the RRC reconfiguration complete message from the source IAB host node,
  • the RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the first IAB node.
  • the target path is the F1 interface between the distribution unit of the first IAB node and the centralized unit of the target IAB host node.
  • the RRC reconfiguration complete message from the source IAB home node is sent through the Xn interface or the NG interface.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present application provides a network device, where the network device includes the device for transplanting an IAB node as described in Embodiment 7.
  • FIG. 22 is a schematic block diagram of a system configuration of a network device according to Embodiment 10 of the present invention.
  • the terminal device 2200 may include a processor 2210 and a memory 2220 ; the memory 2220 is coupled to the processor 2210 .
  • this figure is exemplary; other types of structures may be used in addition to or in place of this structure to implement telecommunication functions or other functions.
  • the functionality of the IAB node's migration means may be integrated into the processor 2210.
  • the processor 2210 may be configured to: receive an RRC reconfiguration complete message of a terminal device and/or a sub-IAB (descendant IAB) node served by the first IAB node; and send the first RRC reconfiguration complete message containing the RRC reconfiguration complete message through the target path
  • the uplink message is sent to the target IAB (IAB-donor) host node, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node.
  • the migration device of the IAB node can be configured separately from the processor 2210 , for example, the migration device of the IAB node can be configured as a chip connected with the processor 2210 , and the migration of the IAB node can be realized through the control of the processor 2210 function of the device.
  • the network device 2200 may further include: a transceiver 2240, an antenna 2250, etc.; wherein, the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the network device 2200 does not necessarily include all the components shown in FIG. 22 ; in addition, the network device 2200 may also include components not shown in FIG. 22 , and reference may be made to the prior art.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present invention provides a network device, where the network device includes the device for transplanting an IAB node as described in Embodiment 8.
  • FIG. 23 is a schematic block diagram of a system configuration of a network device according to Embodiment 11 of the present invention.
  • the network device 2300 may include: a processor 2310 and a memory 2320 ; the memory 2320 is coupled to the processor 2310 .
  • the memory 2320 can store various data; in addition, the program 2330 for information processing is also stored, and the program 2330 is executed under the control of the processor 2310 to receive various information sent by the terminal device and send various information to the terminal device. .
  • the functionality of the migration means of the IAB node may be integrated into the processor 2310.
  • the processor 2310 may be configured to: receive a second uplink message from the first IAB node, where the second uplink message includes an RRC reconfiguration complete message of the terminal equipment and/or sub-IAB node served by the first IAB node; and sending the RRC reconfiguration complete message to the target IAB host node of the first IAB node.
  • the processor 2310 may be configured to: receive a feedback message from the first IAB node including the first downlink message of the first RRC reconfiguration message; and send the second IAB node to the source parent IAB node of the first IAB node Downlink message, the second downlink message includes a second RRC reconfiguration message.
  • the migration device of the IAB node can be configured separately from the processor 2310 .
  • the migration device of the IAB node can be configured as a chip connected to the processor 2310 , and the migration of the IAB node can be realized through the control of the processor 2310 . function of the device.
  • the network device 2300 may further include: a transceiver 2340, an antenna 2350, and the like; wherein, the functions of the above components are similar to those in the prior art, and will not be repeated here. It is worth noting that the network device 2300 does not necessarily include all the components shown in FIG. 23 ; in addition, the network device 2300 may also include components not shown in FIG. 23 , and reference may be made to the prior art.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • An embodiment of the present invention provides a network device, where the network device includes the device for transplanting an IAB node as described in Embodiment 9.
  • FIG. 24 is a schematic block diagram of a system configuration of a network device according to Embodiment 12 of the present invention.
  • the network device 2400 may include: a processor 2410 and a memory 2420 ; the memory 2420 is coupled to the processor 2410 .
  • the memory 2420 can store various data; in addition, the program 2430 for information processing is also stored, and the program 2430 is executed under the control of the processor 2410 to receive various information sent by the terminal device and send various information to the terminal device. .
  • the functionality of the IAB node's migration means may be integrated into the processor 2410.
  • the processor 2410 may be configured to: receive the first uplink message including the RRC reconfiguration complete message sent by the first IAB node through the target path; and/or receive the RRC reconfiguration complete message from the source IAB host node
  • the Xn message or the NG message, the RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal equipment and/or the sub-IAB node served by the first IAB node.
  • the migration device of the IAB node can be configured separately from the processor 2410 .
  • the migration device of the IAB node can be configured as a chip connected to the processor 2410 , and the migration of the IAB node can be realized through the control of the processor 2410 . function of the device.
  • the network device 2400 may further include: a transceiver 2440, an antenna 2450, etc.; wherein, the functions of the above components are similar to those in the prior art, and will not be repeated here. It is worth noting that the network device 2400 does not necessarily include all the components shown in FIG. 24; in addition, the network device 2400 may also include components not shown in FIG. 24, and reference may be made to the prior art.
  • the first uplink message including the RRC reconfiguration complete message is sent to the target IAB host node through the target path, or the RRC reconfiguration complete message is sent to the target IAB host node through the source IAB host node, and the target IAB host node.
  • the host node can obtain the RRC reconfiguration complete message of the terminal device and/or the sub-IAB node served by the transplanted IAB node, so as to know whether the terminal device and/or the sub-IAB node has completed the switching of the path, and therefore, can restart in order to carry out the transplant.
  • the data transmission between the IAB node and the terminal device and/or the sub-IAB node is interrupted due to the migration or topology adaptation process between the IAB node and the IAB-donor-CU.
  • the embodiments of the present application provide a communication system.
  • the communication system includes a first network device, a second network device, and a terminal device
  • the first network device is the network device according to Embodiment 11
  • the second network device is the network device according to Embodiment 12 . That is, the terminal device is directly connected to the IAB host node.
  • FIG. 25 is a schematic diagram of a communication system according to Embodiment 13 of the present application.
  • the communication system 2500 includes a first network device 2501, a second network device 2502 and a terminal device 2503.
  • the terminal device 2503 is directly connected to the first network device 2501 or the second network device 2502 serving as an IAB host node.
  • the communication system includes a first network device and a terminal device, the first network device is the network device according to Embodiment 11 or 12, the terminal device is directly connected to an IAB host node, and the IAB host node is the source IAB The host node or the target IAB host node.
  • FIG. 26 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 2600 includes a first network device 2601 and a terminal device 2602, and the terminal device 2602 is directly connected to the first network device 2601 serving as an IAB host node.
  • the communication system includes a first network device, a second network device, a third network device, and a terminal device
  • the first network device is the network device according to Embodiment 11
  • the second network device is according to the embodiment
  • the third network device is the network device according to Embodiment 10. That is to say, the third network device acts as a relay node, that is, the first IAB node.
  • FIG. 27 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 2700 includes a first network device 2701, a second network device 2702, a third network device 2703, and a terminal device 2704.
  • the third network device 2703 serves as a relay node, that is, the first IAB node, and the terminal device 2704 is connected to the first network device 2701 or the second network device 2702 via the third network device 2703 .
  • the communication system includes a first network device, a second network device, a third network device, a fourth network device, and a terminal device
  • the first network device is the network device according to Embodiment 11
  • the second network device The device is the network device according to Embodiment 12
  • the third network device is the network device according to Embodiment 10. That is to say, the third network device acts as a relay node, that is, the first IAB node
  • the fourth network device is a child node of the first IAB node.
  • the terminal device is a terminal device served by a child node of the first IAB node, or the terminal device is a terminal device served by the first IAB node.
  • FIG. 28 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 2800 includes a first network device 2801, a second network device 2802, a third network device 2803, a fourth network device 2804, and a terminal device 2805.
  • the third network device 2803 serves as a relay node, namely the first network device 2803.
  • An IAB node, the fourth network device 2804 is the third network device 2803, that is, the child IAB node of the first IAB node, and the terminal device 2805 is the terminal device served by the fourth network device 2804, that is, the child IAB node of the first IAB node.
  • FIG. 29 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 2900 includes a first network device 2901, a second network device 2902, a third network device 2903, a fourth network device 2904, and a terminal device 2905.
  • the third network device 2903 serves as a relay node, namely the first network device 2903.
  • An IAB node, the fourth network device 2904 is the third network device 2903, that is, the child IAB node of the first IAB node, and the terminal device 2905 is the third network device 2903, that is, the terminal device served by the first IAB node.
  • the communication system includes a first network device, a third network device, and a terminal device
  • the first network device is the network device according to Embodiment 11 or 12
  • the third network device is the network device according to Embodiment 10 network equipment. That is to say, the third network device acts as a relay node, that is, the first IAB node.
  • FIG. 30 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 3000 includes a first network device 3001, a third network device 3002 and a terminal device 3003.
  • the third network device 3002 serves as a relay node, that is, the first IAB node, and the first network device 3001 is the first network device 3001.
  • the communication system includes a first network device, a third network device, a fourth network device, and a terminal device
  • the first network device is the network device according to Embodiment 11 or 12
  • the third network device is The network device described in Embodiment 10. That is to say, the third network device acts as a relay node, that is, the first IAB node
  • the fourth network device is a child node of the first IAB node.
  • the terminal device is a terminal device served by a child node of the first IAB node, or the terminal device is a terminal device served by the first IAB node.
  • FIG. 31 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 3100 includes a first network device 3101, a third network device 3102, a fourth network device 3103, a terminal device 3104, and the third network device 3102 serves as a relay node, ie, a first IAB node, and a fourth network
  • the device 3103 is the third network device 3102, that is, the child IAB node of the first IAB node
  • the terminal device 3104 is the terminal device served by the fourth network device 3103, that is, the child IAB node of the first IAB node.
  • FIG. 32 is another schematic diagram of the communication system according to Embodiment 13 of the present application.
  • the communication system 3200 includes a first network device 3201, a third network device 3202, a fourth network device 3203, and a terminal device 3204.
  • the third network device 3202 serves as a relay node, that is, the first IAB node
  • the fourth network device 3202 serves as a relay node.
  • the network device 3203 is the third network device 3202, that is, a child IAB node of the first IAB node
  • the terminal device 3204 is the third network device 3202, that is, the terminal device served by the first IAB node.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware combined with software.
  • the present invention relates to a computer-readable program which, when executed by logic components, enables the logic components to implement the above-described apparatus or constituent components, or causes the logic components to implement the above-described various methods or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • the method/apparatus described in conjunction with the embodiments of this application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in FIG. 17 may correspond to either individual software modules or individual hardware modules of the computer program flow.
  • These software modules may correspond to the respective steps shown in FIG. 8 .
  • These hardware modules can be implemented by, for example, solidifying these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor, such that the processor can read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • the functional blocks and/or one or more combinations of the functional blocks described in FIG. 17 it can be implemented as a general purpose processor, a digital signal processor ( DSP), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.
  • DSP digital signal processor
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described with respect to FIG. 17 can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microcomputers A processor, one or more microprocessors in communication with a DSP, or any other such configuration.
  • a device for transplanting an IAB node the device being applied to a first IAB node, the device comprising:
  • a first receiving unit configured to receive an RRC reconfiguration complete message of a terminal device and/or a sub-IAB (descendant IAB) node served by the first IAB node;
  • a first sending unit configured to send the first uplink message including the RRC reconfiguration complete message to the target IAB (IAB-donor) host node through the target path, or, through the source IAB host node to reconfigure the RRC The completion message is sent to the target IAB host node.
  • IAB IAB-donor
  • a first storage unit configured to store the RRC reconfiguration complete message
  • a second sending unit configured to send the first uplink message to the target IAB host node through the target path.
  • a first interruption unit configured to interrupt the service with the terminal device and/or the sub-IAB node when the first condition is satisfied.
  • the first timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to it or receives a feedback message of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the number of the first IAB node.
  • the proportion of terminal devices and/or child IAB nodes of the message reaches the first proportion; and
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node, or the number of received terminal equipment and/or sub-IAB nodes served by the first IAB node The number of feedback messages of RRC reconfiguration messages of the node or the number of RRC reconfiguration complete messages of the terminal equipment and/or child IAB nodes served by the first IAB node reaches the second configuration value , and/or, the ratio of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node or the received terminal equipment served by the first IAB node And/or the ratio of the feedback of the RRC reconfiguration messages of the sub-IAB node or the ratio of the received RRC reconfiguration complete messages of the terminal equipment served by the first IAB node and/or the sub-IAB node reaches the second ratio.
  • a third sending unit configured to send a feedback message of the first downlink message to the source IAB host node when the second condition is satisfied.
  • the second timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to it or receives a feedback message of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the number of the first IAB node.
  • the proportion of terminal devices and/or child IAB nodes of the message reaches a third proportion; and
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node, or the number of received terminal equipment and/or sub-IAB nodes served by the first IAB node The number of feedback messages of the RRC reconfiguration messages of the node or the number of RRC reconfiguration complete messages of the terminal equipment and/or child IAB nodes served by the first IAB node reaches the fourth configuration value , and/or, the ratio of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node or the received terminal equipment served by the first IAB node And/or the ratio of the feedback of the RRC reconfiguration messages of the sub-IAB node or the ratio of the received RRC reconfiguration complete messages of the terminal equipment served by the first IAB node and/or the sub-IAB node reaches the fourth ratio.
  • a second receiving unit configured to receive the first indication information
  • the first indication information is used to indicate that the RRC reconfiguration complete message is an RRC reconfiguration complete message protected by the security configuration configured by the target IAB home node, or to indicate that the RRC reconfiguration complete message is sent to the target The IAB host node, or instruct the first IAB node to store the RRC reconfiguration complete message.
  • the first indication information is included in the RLC group header, or included in the MAC group header.
  • the second storage unit is used for the MAC layer, the RLC layer or the BAP layer of the distribution unit of the first IAB node to store the RRC reconfiguration complete message.
  • a first transfer unit configured for the MAC layer of the distribution unit of the first IAB node to transfer the first indication information to the RLC layer;
  • a third storage unit configured to store the RRC reconfiguration complete message in the BAP layer of the IAB-MT when the first IAB node IAB-DU receives the first indication information
  • a fourth storage unit which is used to store the RRC reconfiguration complete message in the BAP layer of the IAB-DU in the case that the first indication information comes from the child IAB node served by the first IAB node;
  • the second delivery unit is used for the MAC layer or the RLC layer of the IAB-DU of the first IAB node to deliver the first indication information to the BAP layer.
  • a third receiving unit configured to receive the second RRC reconfiguration message from the source parent IAB (parent IAB) node;
  • a random access unit configured to initiate a random access procedure to the target parent node of the first IAB node according to the second RRC reconfiguration message
  • the first switching unit is used for switching to the target path.
  • the target path is the F1 interface between the distribution unit (DU) of the first IAB node and the centralized unit (CU) of the target IAB host node.
  • the first uplink message is the first F1 message.
  • the first F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message ;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for one of the RRC reconfiguration complete messages in the at least one RRC reconfiguration complete message, send The terminal device of this RRC reconfiguration complete message is the same or different from the terminal device associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the first F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • All RRC reconfiguration complete messages are included in one uplink RRC messaging message; or,
  • All RRC reconfiguration complete messages sent by terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by IAB subnodes are included in a different uplink RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC message delivery message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC Reconfiguration Complete message sent by a terminal device served by an IAB node is included in an upstream RRC messaging message, and the RRC Reconfiguration Complete message sent by an IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • the fourth receiving unit which is used for receiving the first downlink message from the source IAB host node
  • the first downlink message includes a first RRC reconfiguration message, and the first RRC reconfiguration message includes a key configured by the target IAB home node.
  • the first downlink message is a second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate a random access procedure with the target parent IAB node, and the distribution of the first IAB node at least one of the unit establishing the F1 interface with the centralized unit of the target IAB host node and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • a fourth sending unit configured to send the second uplink message including the RRC reconfiguration complete message to the source IAB host node
  • the RRC reconfiguration complete message is sent by the source IAB host node to the target IAB host node.
  • the RRC reconfiguration complete message is sent by the source IAB host node to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message includes third indication information
  • the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message or a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message ;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for one of the RRC reconfiguration complete messages in the at least one RRC reconfiguration complete message, send The terminal device of this RRC reconfiguration complete message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the third F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • All RRC reconfiguration complete messages are included in one uplink RRC messaging message; or,
  • All RRC reconfiguration complete messages sent by terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by IAB subnodes are included in a different uplink RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC message delivery message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC Reconfiguration Complete message sent by a terminal device served by an IAB node is included in an upstream RRC messaging message, and the RRC Reconfiguration Complete message sent by an IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • the RRC reconfiguration complete message includes a first RRC reconfiguration complete message and a second RRC reconfiguration complete message
  • the first RRC reconfiguration complete message is the first terminal device and/or the first terminal device and/or the second RRC reconfiguration complete message served by the first IAB node.
  • the second RRC reconfiguration complete message is an RRC reconfiguration complete message generated by a second terminal device and/or a second child IAB node served by the first IAB node,
  • the first IAB node sends the first uplink message including the first RRC reconfiguration complete message to the target IAB host node through the target path, and the first IAB node will include the second RRC reconfiguration complete message
  • the second uplink message of the message is sent to the source IAB host node to send the second RRC reconfiguration complete message to the target IAB host node through the source IAB host node.
  • a device for transplanting an IAB node the device is applied to a first IAB host node, and the first IAB host node is a source IAB host node of the first IAB node,
  • the device includes:
  • a fifth receiving unit configured to receive a second uplink message from the first IAB node, where the second uplink message includes an RRC reconfiguration complete message of a terminal device and/or a sub-IAB node served by the first IAB node; as well as
  • a fifth sending unit configured to send the RRC reconfiguration complete message to the target IAB host node of the first IAB node.
  • the fifth sending unit sends the Xn message or the NG message including the RRC reconfiguration complete message to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message includes third indication information
  • the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message, or,
  • the third F1 message is an uplink RRC messaging message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message ;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for one of the RRC reconfiguration complete messages in the at least one RRC reconfiguration complete message, send The terminal device of this RRC reconfiguration complete message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • All RRC reconfiguration complete messages are included in one uplink RRC messaging message; or,
  • All RRC reconfiguration complete messages sent by the terminal equipment are included in an uplink RRC message transfer message, and all RRC reconfiguration complete messages sent by the IAB sub-node are included in a different uplink RRC message transfer message; Or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC message delivery message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC Reconfiguration Complete message sent by a terminal device served by an IAB node is included in an upstream RRC messaging message, and the RRC Reconfiguration Complete message sent by an IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • a sixth sending unit configured to send a first downlink message to the first IAB node, where the first downlink message includes a first RRC reconfiguration message.
  • the second uplink message is also used as a feedback message of the first downlink message; or,
  • the apparatus further includes: a sixth receiving unit configured to receive a feedback message of the first downlink message.
  • a device for transplanting an IAB node the device is applied to a first IAB host node, and the first IAB host node is a source IAB host node of the first IAB node,
  • the device includes:
  • a seventh receiving unit configured to receive a feedback message from the first IAB node including the first downlink message of the first RRC reconfiguration message
  • a seventh sending unit configured to send a second downlink message to the source parent IAB node of the first IAB node, where the second downlink message includes a second RRC reconfiguration message.
  • the first IAB host node When the first IAB host node receives the feedback of the first RRC reconfiguration message from the first IAB node, it sends a second downlink message to the source parent IAB node of the first IAB node, the second downlink message
  • the message includes a second RRC reconfiguration message.
  • An eighth sending unit configured to send the first downlink message to the first IAB node, where the first downlink message includes the first RRC reconfiguration message.
  • the first RRC reconfiguration message includes the key configured by the target IAB home node of the first IAB node.
  • the first downlink message is a second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate a random access procedure with the target parent IAB node, and the distribution of the first IAB node at least one of the unit establishing an F1 interface with the centralized unit of the target IAB host node and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • a device for transplanting an IAB node the device is applied to a second IAB host node, and the second IAB host node is the target IAB host node of the first IAB node,
  • the device includes:
  • an eighth receiving unit configured to receive the first uplink message including the RRC reconfiguration complete message sent by the first IAB node through the target path; and/or,
  • a ninth receiving unit configured to receive an Xn message or an NG message including an RRC reconfiguration complete message from the source IAB host node,
  • the RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal equipment and/or the sub-IAB node served by the first IAB node.
  • the target path is the F1 interface between the distribution unit of the first IAB node and the centralized unit of the target IAB host node.
  • the RRC reconfiguration complete message from the source IAB home node is sent through the Xn interface or the NG interface.
  • a network device comprising the apparatus according to any one of appendices 1-47.
  • a communication system comprising a first network device, a second network device and a terminal device,
  • the first network device includes the device according to any one of Supplementary Notes 30-44,
  • the second network device includes the apparatus according to any one of appendices 45-27.
  • a communication system comprising a first network device and a terminal device,
  • the first network device includes the apparatus according to any one of Supplementary Notes 30-44, or the first network device includes the apparatus according to any one of Supplementary Notes 45-27
  • a communication system comprising a first network device, a second network device, a third network device and a terminal device,
  • the first network device includes the device according to any one of Supplementary Notes 30-44,
  • the second network device includes the device according to any one of Supplementary Notes 45-27,
  • the third network device includes the apparatus according to any one of Supplementary Notes 1-29.
  • a communication system comprising a first network device, a second network device, a third network device, a fourth network device and a terminal device,
  • the first network device includes the device according to any one of Supplementary Notes 30-44,
  • the second network device includes the device according to any one of Supplementary Notes 45-27,
  • the third network device includes the device according to any one of Supplementary Notes 1-29,
  • the fourth network device is a child node of the first IAB node.
  • the terminal device is a terminal device served by the first IAB node, or,
  • the terminal device is a terminal device served by a child IAB node of the first IAB node.
  • a method for transplanting an IAB node comprising:
  • the first uplink message is sent to the target IAB host node through the target path.
  • the service with the terminal device and/or the sub-IAB node is interrupted.
  • the first timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to it or receives a feedback message of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the number of the first IAB node.
  • the proportion of terminal devices and/or child IAB nodes of the message reaches the first proportion; and
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node, or the number of received terminal equipment and/or sub-IAB nodes served by the first IAB node The number of feedback messages of RRC reconfiguration messages of the node or the number of RRC reconfiguration complete messages of the terminal equipment and/or child IAB nodes served by the first IAB node reaches the second configuration value , and/or, the ratio of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node or the received terminal equipment served by the first IAB node And/or the ratio of the feedback of the RRC reconfiguration messages of the sub-IAB node or the ratio of the received RRC reconfiguration complete messages of the terminal equipment served by the first IAB node and/or the sub-IAB node reaches the second ratio.
  • a feedback message of the first downlink message is sent to the source IAB host node.
  • the second timer times out
  • the number of terminal devices and/or sub-IAB nodes that the first IAB node sends an RRC reconfiguration message to it or receives a feedback message of the RRC reconfiguration message sent by it or receives the RRC reconfiguration complete message sent by it reaches the number of the first IAB node.
  • the proportion of terminal devices and/or child IAB nodes of the message reaches a third proportion; and
  • the number of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node, or the number of received terminal equipment and/or sub-IAB nodes served by the first IAB node The number of feedback messages of the RRC reconfiguration messages of the node or the number of RRC reconfiguration complete messages of the terminal equipment and/or child IAB nodes served by the first IAB node reaches the fourth configuration value , and/or, the ratio of RRC reconfiguration messages sent by the first IAB node to the terminal equipment and/or sub-IAB nodes served by the first IAB node or the received terminal equipment served by the first IAB node And/or the ratio of the feedback of the RRC reconfiguration messages of the sub-IAB node or the ratio of the received RRC reconfiguration complete messages of the terminal equipment served by the first IAB node and/or the sub-IAB node reaches the fourth ratio.
  • the first indication information is used to indicate that the RRC reconfiguration complete message is an RRC reconfiguration complete message protected by the security configuration configured by the target IAB home node, or to indicate that the RRC reconfiguration complete message is sent to the target The IAB host node, or instruct the first IAB node to store the RRC reconfiguration complete message.
  • the first indication information is included in the RLC group header, or included in the MAC group header.
  • the MAC layer or the RLC layer or the BAP layer of the distribution unit of the first IAB node stores the RRC reconfiguration complete message.
  • the MAC layer of the distribution unit of the first IAB node transmits the first indication information to the RLC layer; or,
  • the BAP layer of the IAB-MT stores the RRC reconfiguration complete message
  • the BAP layer of the IAB-DU stores the RRC reconfiguration complete message
  • the MAC layer or the RLC layer of the IAB-DU of the first IAB node transmits the first indication information to the BAP layer.
  • the target path is the F1 interface between the distribution unit (DU) of the first IAB node and the centralized unit (CU) of the target IAB host node.
  • the first uplink message is the first F1 message.
  • the first F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message ;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for one of the RRC reconfiguration complete messages in the at least one RRC reconfiguration complete message, send The terminal device of this RRC reconfiguration complete message is the same or different from the terminal device associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the first F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • All RRC reconfiguration complete messages are included in one uplink RRC messaging message; or,
  • All RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB sub-nodes are included in a different uplink RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC messaging message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment served by one IAB node is included in an upstream RRC messaging message, and the RRC reconfiguration complete message sent by the IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • the first downlink message includes a first RRC reconfiguration message, and the first RRC reconfiguration message includes a key configured by the target IAB home node.
  • the first downlink message is a second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate a random access procedure with the target parent IAB node, and the distribution of the first IAB node at least one of the unit establishing the F1 interface with the centralized unit of the target IAB host node and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • the first IAB node sends the second uplink message including the RRC reconfiguration complete message to the source IAB host node;
  • the RRC reconfiguration complete message is sent by the source IAB host node to the target IAB host node.
  • the RRC reconfiguration complete message is sent by the source IAB host node to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message includes third indication information
  • the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message or a terminal device context modification response message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message ;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for one of the RRC reconfiguration complete messages in the at least one RRC reconfiguration complete message, send The terminal device of this RRC reconfiguration complete message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • the third F1 message is an uplink RRC message transfer (UL RRC Message Transfer) message.
  • All RRC reconfiguration complete messages are included in one uplink RRC messaging message; or,
  • All RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB sub-nodes are included in a different uplink RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC messaging message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment served by one IAB node is included in an upstream RRC messaging message, and the RRC reconfiguration complete message sent by the IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • the RRC reconfiguration complete message includes a first RRC reconfiguration complete message and a second RRC reconfiguration complete message
  • the first RRC reconfiguration complete message is the first terminal device and/or the first terminal device and/or the second RRC reconfiguration complete message served by the first IAB node.
  • the second RRC reconfiguration complete message is an RRC reconfiguration complete message generated by a second terminal device and/or a second child IAB node served by the first IAB node,
  • the first IAB node sends the first uplink message including the first RRC reconfiguration complete message to the target IAB host node through the target path, and the first IAB node will include the second RRC reconfiguration complete message
  • the second uplink message of the message is sent to the source IAB host node to send the second RRC reconfiguration complete message to the target IAB host node through the source IAB host node.
  • a method for transplanting an IAB node the method being applied to a first IAB host node, the first IAB host node being the source IAB host node of the first IAB node,
  • the method includes:
  • the second uplink message including an RRC reconfiguration complete message of a terminal device and/or sub-IAB node served by the first IAB node;
  • the RRC reconfiguration complete message is sent to the target IAB host node through the Xn interface or the NG interface.
  • the second uplink message includes third indication information
  • the third indication information is used to instruct the source IAB host node to send the RRC reconfiguration complete message to the target IAB host node.
  • the second upstream message is the third F1 message.
  • the third F1 message is at least one of a terminal device context establishment response message and a terminal device context modification response message, or,
  • the third F1 message is an uplink RRC messaging message.
  • the RRC reconfiguration complete message of the terminal device corresponding to the terminal device context establishment response message or the terminal device context modification response message is included in the terminal device context establishment response message or the terminal device context modification response message ;
  • the terminal device context establishment response message or the terminal device context modification response message includes at least one of the RRC reconfiguration complete messages, and for one of the RRC reconfiguration complete messages in the at least one RRC reconfiguration complete message, send The terminal device of this RRC reconfiguration complete message is the same as or different from the terminal associated with the terminal device context establishment response message or the terminal device context modification response message.
  • All RRC reconfiguration complete messages are included in one uplink RRC messaging message; or,
  • All RRC reconfiguration complete messages sent by the terminal equipment are included in one uplink RRC messaging message, and all RRC reconfiguration complete messages sent by the IAB sub-nodes are included in a different uplink RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by one IAB node is included in an uplink RRC messaging message, and the RRC reconfiguration complete message sent by the terminal equipment or IAB child node served by another IAB node includes the in a different upstream RRC messaging message; or,
  • the RRC reconfiguration complete message sent by the terminal equipment served by one IAB node is included in an upstream RRC messaging message, and the RRC reconfiguration complete message sent by the IAB child node served by this IAB node is included in a different upstream RRC message delivering the message.
  • the second uplink message is also used as a feedback message of the first downlink message; or,
  • the method further includes: receiving a feedback message of the first downlink message.
  • a method for transplanting an IAB node the method being applied to a first IAB host node, the first IAB host node being the source IAB host node of the first IAB node,
  • the method includes:
  • the first IAB host node When the first IAB host node receives the feedback of the first RRC reconfiguration message from the first IAB node, it sends a second downlink message to the source parent IAB node of the first IAB node, the second downlink message
  • the message includes a second RRC reconfiguration message.
  • the first RRC reconfiguration message includes the key configured by the target IAB home node of the first IAB node.
  • the first downlink message is a second F1 message.
  • the first downlink message includes at least one of the following:
  • second indication information where the second indication information is used to indicate that cross-CU IAB node migration is to be performed, or to indicate terminal device configuration for cross-CU IAB node migration;
  • the value of the first timer or the second timer, the first timer or the second timer is used for the first IAB node to initiate a random access procedure with the target parent IAB node, and the distribution of the first IAB node at least one of the unit establishing the F1 interface with the centralized unit of the target IAB host node and the feedback of the first IAB node sending the first RRC reconfiguration message to the source IAB host node;
  • the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback are the number and/or ratio of at least one of terminal devices, sub-IAB nodes, messages, and feedback.
  • a method for transplanting an IAB node the method being applied to a second IAB host node, the second IAB host node being the target IAB host node of the first IAB node,
  • the method includes:
  • the RRC reconfiguration complete message is the RRC reconfiguration complete message of the terminal equipment and/or the sub-IAB node served by the first IAB node.
  • the target path is the F1 interface between the distribution unit of the first IAB node and the centralized unit of the target IAB host node.
  • the RRC reconfiguration complete message from the source IAB home node is sent through the Xn interface or the NG interface.

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Abstract

一种IAB节点的移植方法及装置。所述方法应用于终端设备，该方法应用于第一IAB节点，该方法包括：接收该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。

Description

IAB节点的移植方法及装置 技术领域
本发明涉及通信领域。
背景技术
集成的接入和回传(Integrated access and backhaul，IAB)确保NG-RAN里的无线中继。中继节点，即IAB节点(IAB-node)，支持NR接入和回传(backhauling)。回传可以包括单跳(hop)或多跳。网络侧NR回传的终点，即IAB宿主(IAB-donor)，表示包括支持IAB的额外功能的gNB。IAB宿主也可以称为IAB宿主节点。
IAB节点支持gNB-DU(Distributed Unit，分布单元)的功能，即IAB-DU。IAB-DU终止到终端设备和下一跳IAB节点的NR接入接口，并终止到IAB宿主上的gNB-CU功能的F1协议。另外，IAB节点还支持终端设备功能(UE功能)的一个子集，即IAB-MT，其包括，例如连接到另一个IAB节点或IAB宿主的gNB-DU的、连接到IAB宿主上gNB-CU(Centralized Unit，集中单元)和连接到核心网的物理层、层2(L2)、RRC(Radio Resource Control，无线资源控制)和NAS(Non-Access-Stratum，非接入层)功能。
IAB节点通过一跳或多跳连接到一个IAB宿主。在拓扑中，该IAB宿主为根节点，IAB节点的IAB-DU接口上的邻节点被称为该IAB节点的子节点(descendant node)，即子IAB节点(descendant IAB-node)，在IAB-MT接口上的邻节点被称为父节点(parent node)，即父IAB节点(parent IAB-node)。
应该注意，上面对技术背景的介绍只是为了方便，对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
在某些情况下，需要进行IAB节点的移植(migration)。IAB节点的移植也可以称为IAB节点的拓扑自适应。例如，一个IAB节点在测量了链路质量之后，决定从原来的路径移植到一个新的路径上，原来的路径称为源路径(source path)，新的路径 称为目标路径(target path)。进行移植的IAB节点称为移植IAB节点。
一个IAB节点的移植或拓扑自适应场景可以包括IAB宿主CU(IAB-donor-CU)内和IAB宿主CU间的移植或拓扑自适应。
对于一个IAB节点在IAB-donor-CU内的移植或拓扑自适应的场景，源父IAB节点和目标父IAB节点都由相同的IAB-donor-CU提供服务。目标父IAB节点可以使用与源父IAB节点不同的IAB宿主DU(IAB-donor-DU)；源路径与目标路径可以有公共的节点。
Rel-17eIAB支持CU间(inter-CU)的IAB移植，对于一个IAB节点在IAB-donor-CU间移植或拓扑自适应的场景，源父IAB节点和目标父IAB节点由不同的IAB-donor-CU提供服务。目标父IAB节点使用与源父IAB节点不同的IAB-donor-DU。
对于一个IAB节点在IAB-donor-CU间移植/拓扑自适应的场景，移植或拓扑自适应过程或机制允许移植所有或部分这个移植IAB节点直接或间接服务的IAB节点即子IAB节点和/或终端设备；假设在新的IAB-donor-CU处，父-子(parent-child)节点关系(包括IAB节点以及终端设备)不变。
一个IAB节点在IAB-donor-CU间移植或拓扑自适应过程涉及以下三个阶段：(1)移植IAB节点的IAB-MT移植；(2)该移植IAB节点内的IAB-DU的移植；以及(3)该移植IAB节点服务的终端设备和该IAB节点服务的子IAB节点，即子节点的IAB-MTs的移植。
以上三个阶段可以是相互独立的过程，并且，对于阶段(1)-(3)的执行顺序不进行限制。
发明人发现，如果先进行阶段(1)、(2)，再进行阶段(3)，移植IAB节点服务的终端设备将会检测到无线链路失败(radio link failure，RLF)后进行连接重建、从而造成较长时间的业务中断。为了克服这个缺陷，假设先进行阶段(3)，即进行该移植IAB节点提供服务的终端设备的移植，例如使用移植IAB节点中IAB-MT切换类似的信令流程，那么将存在以下问题：由于先进行阶段(3)，即移植这些终端设备时，移植IAB节点与目标IAB宿主之间没有F1连接，那么移植IAB节点服务的终端设备和/或子IAB节点发送给移植IAB节点的响应消息(RRC重配置完成消息)有可能会传递给源IAB宿主。也就是说，这种情况下，目标IAB宿主无法获知这个终端设 备和/或子IAB节点是否完成阶段(3)，无法重新开始为了进行IAB节点在IAB-donor-CU间移植或拓扑自适应过程而与其中断的数据传输。
为了解决上述问题中的一个或多个，本申请实施例提供了一种IAB节点的移植方法及装置。
根据本申请实施例的第一方面，提供了一种IAB节点的移植装置，该装置应用于第一IAB节点，该装置包括：第一接收单元，其用于接收该第一IAB节点服务的终端设备和/或子IAB(descendant IAB)节点的RRC重配置完成消息；以及第一发送单元，其用于通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB(IAB-donor)宿主节点，或者，通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
根据本申请实施例的第二方面，提供了一种IAB节点的移植装置，该装置应用于第一IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点，该装置包括：第五接收单元，其用于接收来自第一IAB节点的第二上行消息，该第二上行消息包括该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及第五发送单元，其用于将该RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
根据本申请实施例的第三方面，提供了一种IAB节点的移植装置，该装置应用于第一IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点，该装置包括：第七接收单元，其用于接收来自该第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及第七发送单元，其用于向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
根据本申请实施例的第四方面，提供了一种IAB节点的移植装置，该装置应用于第二IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点，该装置包括：第八接收单元，其用于接收该第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，第九接收单元，其用于接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，该RRC重配置完成消息是该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
根据本申请实施例的第五方面，提供了一种网络设备，该网络设备包括根据本申请实施例的第一方面至第四方面中的任一方面所述的装置。
根据本申请实施例的第六方面，提供了一种通信系统，该通信系统包括第一网络设备、第二网络设备以及终端设备，该第一网络设备包括根据本申请实施例的第二方面或第三方面所述的装置，该第二网络设备包括根据本申请实施例的第四方面所述的装置。
根据本申请实施例的第七方面，提供了一种通信系统，该通信系统包括第一网络设备以及终端设备，该第一网络设备包括根据本申请实施例的第二方面或第三方面或第四方面所述的装置。
根据本申请实施例的第八方面，提供了一种通信系统，该通信系统包括第一网络设备、第二网络设备、第三网络设备以及终端设备，该第一网络设备包括根据本申请实施例的第二方面或第三方面所述的装置，该第二网络设备包括根据本申请实施例的第四方面所述的装置，该第三网络设备包括根据本申请实施例的第一方面所述的装置。
根据本申请实施例的第九方面，提供了一种通信系统，该通信系统包括第一网络设备、第二网络设备、第三网络设备、第四网络设备以及终端设备，该第一网络设备包括根据本申请实施例的第二方面或第三方面所述的装置，该第二网络设备包括根据本申请实施例的第四方面所述的装置，该第三网络设备包括根据本申请实施例的第一方面所述的装置，所述第四网络设备是第一IAB节点的子节点。
根据本申请实施例的第十方面，提供了一种IAB节点的移植方法，该方法应用于第一IAB节点，该方法包括：接收该第一IAB节点服务的终端设备和/或子IAB(descendant IAB)节点的RRC重配置完成消息；以及通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB(IAB-donor)宿主节点，或者，通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
根据本申请实施例的第十一方面，提供了一种IAB节点的移植方法，该方法应用于第一IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点，该方法包括：接收来自第一IAB节点的第二上行消息，该第二上行消息包括该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及将该RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
根据本申请实施例的第十二方面，提供了一种IAB节点的移植方法，该方法应用于第一IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点， 该方法包括：接收来自该第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
根据本申请实施例的第十三方面，提供了一种IAB节点的移植方法，该方法应用于第二IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点，该方法包括：接收该第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，该RRC重配置完成消息是该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
根据本申请实施例的第十四方面，提供了一种提供了一种计算机可读程序，其中当在IAB节点的移植装置或网络设备中执行所述程序时，所述程序使得所述IAB节点的移植装置或网络设备执行本发明实施例的第八方面或第九方面或第十方面所述的IAB节点的移植方法。
根据本发明实施例的第十五方面，提供了一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得IAB节点的移植装置或网络设备执行本发明实施例的第八方面或第九方面或第十方面所述的IAB节点的移植方法。
本申请实施例的有益效果之一在于：通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含/具有”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本发明的实施方式，并与文字描述一起来阐释本发明的原理。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。在附图中：
图1是本申请实施例的IAB整体架构的一示意图；
图2是本申请实施例的IAB整体架构的另一示意图；
图3是IAB-DU和IAB-donor-CU间F1-U接口的协议栈的一示意图；
图4是IAB-DU和IAB-donor-CU间F1-C接口的协议栈的一示意图；
图5是本申请实施例的IAB-MT与IAB-donor-CU间SRB的协议栈的一示意图；
图6是本申请实施例的一个IAB节点在IAB-donor-CU内移植或拓扑自适应的场景的一示意图；
图7是本申请实施例的一个IAB节点在IAB-donor-CU间移植或拓扑自适应的场景的一示意图；
图8是本申请实施例1的IAB节点的移植方法的一示意图；
图9是本申请实施例1的实现步骤802的方法的一示意图；
图10是本申请实施例1的实现步骤803的方法的一示意图；
图11是本申请实施例2的IAB节点的移植方法的一示意图；
图12是本申请实施例2的IAB节点的移植方法的另一示意图；
图13是本申请实施例3的IAB节点的移植方法的一示意图；
图14是本申请实施例4的IAB节点的移植方法的一示意图；
图15是本申请实施例5的IAB节点的移植方法的一示意图；
图16是本申请实施例6的IAB节点的移植方法的一示意图；
图17是本申请实施例7的IAB节点的移植装置的一示意图；
图18是本申请实施例7的第一发送单元的一示意图；
图19是本申请实施例8的IAB节点的移植装置的一示意图；
图20是本申请实施例8的IAB节点的移植装置的另一示意图；
图21是本申请实施例9的IAB节点的移植装置的一示意图；
图22是本发明实施例10的网络设备的系统构成的一示意框图；
图23是本发明实施例11的网络设备的系统构成的一示意框图；
图24是本发明实施例12的网络设备的系统构成的一示意框图；
图25是本申请实施例13的通信系统的一示意图；
图26是本申请实施例13的通信系统的又一示意图；
图27是本申请实施例13的通信系统的又一示意图；
图28是本申请实施例13的通信系统的又一示意图；
图29是本申请实施例13的通信系统的又一示意图；
图30是本申请实施例13的通信系统的又一示意图；
图31是本申请实施例13的通信系统的又一示意图；
图32是本申请实施例13的通信系统的又一示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既 包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及未来的5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将用户设备接入通信网络并为该用户设备提供服务的设备。网络设备可以包括但不限于如下设备：IAB架构下的“节点(node)”和/或“宿主(donor)”、基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)例如是指通过网络设备接入通信网络并接收网络服务的设备，也可以称为“终端设备”(TE，Terminal Equipment)。例如，IAB架构下的由IAB节点或IAB宿主所服务的终端设备。
终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等 等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
在本申请实施例中，“当……时”、“在……情况下”、“对于……的情况”以及“如果……”都表示基于某个或某些条件或状态等，另外，这些表述方式可以互相替换。
以下通过示例对本申请实施例的场景进行说明，但本发明不限于此。
图1是本申请实施例的IAB整体架构的一示意图。如图1所示，该IAB整体架构使用双工(SA)模式；图2是本申请实施例的IAB整体架构的另一示意图。如图2所示，该IAB整体架构使用双连接(EN-DC)模式。在双连接模式中，IAB节点通过E-UTRA连接到一个MeNB，IAB宿主作为SgNB终止X2-C。
图3是IAB-DU和IAB-donor-CU间F1-U接口的协议栈的一示意图，图4是IAB-DU和IAB-donor-CU间F1-C接口的协议栈的一示意图，在图3和图4中，F1-U和F1-C以2跳回传为例进行说明。
在本申请实施例中，F1-U和F1-C使用IAB-DU和IAB-donor-CU间的IP传输层，另外，F1-U和F1-C有安全保护。
在本申请实施例中，在无线回传上，IP层通过回传适配协议(Backhaul Adaptation Protocol，BAP)子层传输，以确保多跳路由；IP层也可以用于非F1业务，例如操作维护管理(Operation Administration and Maintenance，OAM)业务。
在本申请实施例中，在每个回传链路(link)上，BAP PDUs由BH RLC信道(channel)传输；在每个BH链路(BH link)上，可以配置多个BH RLC信道，这样允许通信优先化(traffic prioritization)和QoS(Quality of Service，服务质量)实施(QoS enforcement)。
在本申请实施例中，每个IAB节点和IAB-donor-DU上的BAP实体执行BAP  PDUs的BH RLC信道的映射。
在本申请实施例中，IAB-MT与IAB-donor-CU建立用于承载RRC和NAS的SRBs。图5是本申请实施例的IAB-MT与IAB-donor-CU间SRB的协议栈的一示意图。
在本申请实施例中，对于工作在EN-DC模式下的IAB节点，IAB-MT还与IAB-donor-CU建立一个或多个DRBs，可以用于例如传输OAM业务。对于SA模式，DRBs的建立是可选的。这些SRBs和DRBs经Uu接口信道在这个IAB-MT和它的父节点间传输。
图6是本申请实施例的一个IAB节点在IAB-donor-CU内移植或拓扑自适应的场景的一示意图。如图6所示，IAB-node 5是移植IAB节点，IAB-node 3是IAB-node 5的源父IAB节点，IAB-node 4是IAB-node 5的目标父IAB节点，IAB-node 3和IAB-node 4连接到相同的IAB-donor-CU以及不同的IAB-donor-DU。UE1是IAB-node 5服务的终端设备，IAB-node 6是IAB-node 5服务的子IAB节点。
图7是本申请实施例的一个IAB节点在IAB-donor-CU间移植或拓扑自适应的场景的一示意图。如图7所示，IAB-node 5是移植节点，IAB-node 3是IAB-node 5的源父IAB节点，IAB-node 4是IAB-node 5的目标父IAB节点，IAB-node 3和IAB-node 4连接到不同的IAB-donor-CU以及不同的IAB-donor-DU。UE1是IAB-node 5服务的终端设备，IAB-node 6是IAB-node 5服务的子IAB节点。
对于如上所述的一个IAB节点在IAB-donor-CU间移植或拓扑自适应过程中的阶段(1)，移植IAB节点的IAB-MT移植意味着将IAB-node 5的IAB-MT从源路径切换到目标路径上；对于阶段(2)，移植IAB节点内的IAB-DU的移植意味着将IAB-node 5的IAB-DU从IAB-donor-CU1切换到IAB-donor-CU2；对于阶段(3)，移植IAB节点服务的终端设备以及这个IAB节点服务的子IAB节点即子节点的IAB-MTs的移植意味着IAB-node 6和UE1的切换。
而为了克服终端设备检测到无线链路失败(radio link failure，RLF)后进行连接重建、从而造成业务中断的缺陷，假设先进行阶段(3)，移植IAB节点服务的终端设备以及这个IAB节点服务的子IAB节点即子节点的IAB-MTs的移植，即先进行IAB-node 6和UE1的切换，使用移植IAB节点中IAB-MT切换类似的信令流程，将存在以下问题：由于先进行阶段(3)，即IAB-node 5与IAB-donor-CU2之间没有F1 连接，那么IAB-node 6和UE1发送给IAB-node 5的RRC重配置完成消息有可能会传递给IAB-donor-CU1。也就是说，IAB-donor-CU2无法获知IAB-node 6和UE1是否完成切换，无法重新开始为了进行IAB-node 5在IAB-donor-CU1和IAB-donor-CU2间移植或拓扑自适应过程而与其中断的数据传输。
下面结合附图对本申请实施例的各种实施方式进行说明。这些实施方式只是示例性的，不是对本发明的限制。
实施例1
本申请实施例提供了一种IAB节点的移植方法，该装置应用于第一IAB节点。
图8是本申请实施例1的IAB节点的移植方法的一示意图。如图8所示，该方法包括：
步骤801：接收该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
步骤802：通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，
步骤803：通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
由此，目标IAB宿主能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
在本申请实施例中，第一IAB节点是移植IAB节点。
在本申请实施例中，第一IAB节点服务的终端设备可以是至少一个终端设备，第一IAB节点服务的子IAB节点可以是至少一个子节点。向第一IAB节点发送RRC重配置完成消息的终端设备和/或子IAB节点可以是第一IAB节点服务的所有终端设备和/或所有子IAB节点，也可以是第一IAB节点服务的部分终端设备和/或部分子IAB节点。
在本申请实施例中，源IAB宿主节点又称为源IAB宿主，其表示网络侧在源路径上回传的终点；目标IAB宿主节点又称为目标IAB宿主，其表示网络侧在目标路径上回传的终点。
在步骤801中，第一IAB节点接收该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，该RRC重配置完成消息是该终端设备和/或子IAB节点使用目标IAB宿主节点配置的安全配置而完成RRC重配置后，即应用该RRC重配置消息里的配置，包括目标IAB宿主节点配置的安全配置，向第一IAB节点发送的使用目标IAB宿主节点配置的密钥保护(完整性保护和加密)的RRC重配置完成消息。
在步骤802中，第一IAB节点通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点。
在本申请实施例中，该目标路径是该第一IAB节点的分布单元(DU)与该目标IAB宿主节点的集中单元(CU)之间的F1接口。
例如，该第一上行消息是第一F1消息。
在本申请实施例中，F1消息是指通过F1接口传输的控制消息；F1接口是指IAB-DU与IAB-donor-CU之间的接口。
在本申请实施例中，例如，该第一F1消息可以是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个。
例如，与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端设备的该RRC重配置完成消息包括在该终端设备上下文建立响应消息或该终端设备上下文修改响应消息中；或者，
该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括至少一条该RRC重配置完成消息，对于至少一条该RRC重配置完成消息中的一条该RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息关联的终端设备相同或不同。例如，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括两条RRC重配置完成消息，其中一条RRC重配置完成消息来自该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端，另外一条RRC重配置完成消息来自与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端不同的一个终端。
在本申请实施例中，又例如，该第一F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
例如，所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
在本申请实施例中，例如，如图8所示，该方法还可以包括：
步骤804：接收第一指示信息，
该第一指示信息用于指示该RRC重配置完成消息是使用目标IAB宿主节点配置的安全配置保护的RRC重配置完成消息，或者，指示该RRC重配置完成消息是发送给该目标IAB宿主节点的，或者，指示该第一IAB节点存储该RRC重配置完成消息。
在本申请实施例中，步骤804可以和步骤801同时进行，也可以先后执行，本申请实施例不对这两个步骤的执行顺序进行限制。
例如，向第一IAB节点发送RRC重配置完成消息的终端设备和/或子IAB节点在发送该RRC重配置完成消息时，在低层包括该第一指示信息而发送给第一IAB节点。
在本申请实施例中，该第一指示信息用于指示同一RLC PDU或MAC PDU里的RRC消息。
例如，该第一指示信息包括在RLC组头里，或者，包括在MAC组头里。
在本申请实施例中，当第一IAB节点IAB-DU接收到该第一指示信息时，在第一IAB节点的分布单元(IAB-DU)里，MAC层或RLC层或BAP层存储该RRC重配置完成消息。
例如，第一IAB节点接收到一个终端设备和/或子IAB节点发送的数据包，MAC层解包收到该第一指示信息和一个MAC SDU，MAC层存储该MAC SDU；或者，第一IAB节点接收到一个终端设备和/或子IAB节点发送的数据包，RLC层解包收到 该第一指示信息和一个RLC SDU，RLC层存储该RLC SDU。
还可以包括：当第一IAB节点IAB-DU接收到该第一指示信息时，IAB-MT的BAP层存储该RRC重配置完成消息。
对于第一指示信息来自该第一IAB节点服务的子IAB节点的情况，该第一指示信息还可以包括在BAP组头里，IAB-MT或IAB-DU的BAP层存储该RRC重配置完成消息。另外，还可以包括该第一IAB节点的IAB-DU的BAP将该第一指示信息传递给IAB-MT的BAP层。
另外，还可以包括：该第一IAB节点的IAB-DU的MAC层将该第一指示信息传递给RLC层。例如，第一IAB节点接收到一个终端设备和/或子IAB节点发送的数据包，MAC层解包收到该第一指示信息和一个RLC SDU，MAC层将该第一指示信息和该MAC SDU，即RLC PDU递交给RLC层，RLC层解包得到RLC SDU，存储该RLC SDU。
还可以包括：该第一IAB节点的IAB-DU的MAC层将该第一指示信息传递给BAP层。例如，第一IAB节点接收到一个终端设备和/或子IAB节点发送的数据包，MAC层解包收到该第一指示信息和一个RLC SDU，MAC层将该第一指示信息和该MAC SDU，即RLC PDU递交给RLC层；RLC层解包得到RLC SDU，将该第一指示信息和该RLC SDU，即BAP PDU递交给BAP层；BAP层解包得到BAP SDU，存储该BAP SDU。
还可以包括：该第一IAB节点的IAB-DU的RLC层将该第一指示信息传递给BAP层。例如，第一IAB节点接收到一个终端设备和/或子IAB节点发送的数据包，RLC层解包收到该第一指示信息和一个RLC SDU，将该第一指示信息和该RLC SDU，即BAP PDU递交给BAP层；BAP层解包得到BAP SDU，存储该BAP SDU。
在步骤802中，通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点。图9是本申请实施例1的实现步骤802的方法的一示意图。如图9所示，该方法包括：
步骤901：存储该RRC重配置完成消息；
步骤902：建立该目标路径；以及
步骤903：通过该目标路径将该第一上行消息发送给目标IAB宿主节点。
在本申请实施例中，对于第一IAB节点来说，RRC消息可以是不可见的，也就 是说，第一IAB节点仅知道存储一个RLC/MAC SDU，可以不知道这个RLC/MAC SDU里包括的内容，例如该RRC重配置完成消息。
在本申请实施例中，第一IAB节点在接收到来自该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息时，先存储该RRC重配置完成消息，并建立该目标路径，第一IAB节点通过该目标路径将包含该RRC重配置完成消息的该第一上行消息发送给目标IAB宿主节点。
在本申请实施例中，源IAB宿主节点向第一IAB节点的源父IAB节点发送第二下行消息，例如，该第二下行消息是一条F1消息，例如，该第二下行消息是UE上下文修改请求消息(UE Context Modification Request)或下行RRC消息传递(DL RRC Message Transfer)消息)，该第二下行消息包括第二RRC重配置消息，该第二RRC重配置消息来自目标IAB宿主。第一IAB节点的源父IAB节点在收到该第二下行消息之后，向第一IAB节点发送该第二RRC重配置消息。
如图9所示，例如，该方法还可以包括：
步骤904：接收来自源父IAB(parent IAB)节点的第二RRC重配置消息；
步骤905：根据该第二RRC重配置消息，向该第一IAB节点的目标父节点发起随机接入过程；以及
步骤906：切换至目标路径。
在本申请实施例中，基于该第二下行消息里的指示，源父IAB节点可以中断与第一IAB节点的业务，从而第一IAB节点服务的终端设备和/或子IAB节点的业务也会中断。
在本申请实施例中，可以由第一IAB节点控制与其服务的终端设备和/或子IAB节点的业务中断。
例如，第一IAB节点存储收到的来自源父IAB节点的第二RRC重配置消息，继续与第一IAB节点服务的终端设备和/或子IAB节点进行业务传输，直到基于指示或基于实现或基于定时器或基于一个数量和/或比例来中断与该终端设备和/或该子IAB节点的业务。这样，能够减少第一IAB节点服务的终端设备和/或子IAB节点的业务中断。
在本申请实施例中，例如，当满足第一条件时，第一IAB节点中断与该终端设备和/或该子IAB节点的业务。
例如，该第一条件可以包括以下条件中的至少一个：
向该第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到该第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第一定时器超时；
该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第一比例；以及
该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第二比例。
以下，针对各种情况进行示例性的说明。
1)第一IAB节点可以基于指示来中断与该终端设备和/或该子IAB节点的业务，例如，基于实现来中断。例如，为第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或者收到大部分终端设备和/或子IAB节点的RRC重配置完成消息时，中断与该终端设备和/或该子IAB节点的业务，应用之前存储的来自源父IAB节点的第二RRC重配置消息中的新配置，向目标父IAB节点发起随机接入过程。
例如，为第一IAB节点服务的所有终端设备发送了RRC重配置消息或者收到大部分终端设备的RRC重配置完成消息时，中断与所有这些终端设备或这些收到了RRC重配置完成消息的终端设备的业务。
又例如，为第一IAB节点服务的所有子IAB节点发送了RRC重配置消息或者收 到大部分子IAB节点的RRC重配置完成消息时，中断与所有这些子IAB节点或这些收到了RRC重配置完成消息的子IAB节点的业务。
又例如，为第一IAB节点服务的所有终端设备和所有子IAB节点发送了RRC重配置消息或者收到大部分终端设备和子IAB节点的RRC重配置完成消息时，中断与所有这些终端设备和子IAB节点的业务或中断与这些收到了RRC重配置完成消息的终端设备和子IAB节点的业务。
2)第一IAB节点可以基于定时器来中断与该终端设备和/或该子IAB节点的业务。例如，当第一定时器超时时，中断与服务的该终端设备和/或该子IAB节点的业务，应用之前存储的来自源父IAB节点的第二RRC重配置消息，向目标父IAB节点发起随机接入过程。例如，可以是在第一IAB节点收到第一定时器的值时立即启动第一定时器，或者，也可以是收到第一定时器的值且收到源父IAB节点传递的来自目标IAB宿主节点的第二RRC重配置消息，启动第一定时器。
例如，当第一定时器超时时，中断与服务的终端设备的业务。
又例如，当第一定时器超时时，中断与服务的子IAB节点的业务。
又例如，当第一定时器超时时，中断与服务的终端设备和子IAB节点的业务。
3)第一IAB节点可以基于终端设备和/或子IAB节点的数量和/或比例，或者发送消息的数量和/或比例，或者收到消息或反馈的数量和/或比例来中断与终端设备和/或子IAB节点的业务，例如，
当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第一比例时，第一IAB节点中断与所有这些终端设备和/或子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和/或子IAB节点的业务；也就是说，基于第一IAB节点向其发送了RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量和/或比例来中断与该终端设备和/或该子IAB节点的业务。
或者是，当该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点 发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第二比例时，第一IAB节点中断与该终端设备和/或该子IAB节点的业务；也就是说，基于第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的来自终端设备和/或子IAB节点的RRC重配置完成消息的数量和/或比例来中断与该终端设备和/或该子IAB节点的业务。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的比例达到第一比例时，第一IAB节点中断与所有这些终端设备的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备的业务；或者是，当该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例达到第二比例时，第一IAB节点中断与所有这些终端设备的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备的业务。
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的比例达到第一 比例时，第一IAB节点中断与所有这些子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的比例达到第二比例时，第一IAB节点中断与所有这些子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务；
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的比例达到第一比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的比例达到第二比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和子IAB节点的业务。
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的数量达到第一配 置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的比例达到第一比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和所有子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例达到第二比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和所有子IAB节点的业务。
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的比例达到第一比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与所有终端设备和这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的比例达到第二比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断所有终端设备和这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务。
在本申请实施例中，该第一IAB节点向其发送RRC重配置消息或收到其发送的 RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量与第一IAB节点服务的终端设备和/或子IAB节点的总数量之比。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的数量与第一IAB节点服务的终端设备子IAB节点的总数量之比。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的数量与第一IAB节点的子IAB节点的总数量之比。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的数量与第一IAB节点服务的终端设备和子IAB节点的总数量之比。
在本申请实施例中，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，在本申请实施例中，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备 的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，在本申请实施例中，该第一IAB节点向该第一IAB节点的子IAB节点发送的RRC重配置消息或收到的该第一IAB节点的子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点的子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点的子IAB节点发送的RRC重配置消息或收到的该第一IAB节点的子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点的子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
以上，针对由第一IAB节点控制与其服务的终端设备和/或子IAB节点的业务中断的情况进行了说明。对于该情况，第一IAB节点存储收到的来自它服务的终端设备和/或子IAB节点的RRC重配置完成消息，将包括该RRC重配置完成消息的第一上行消息通过目标路径传输给目标IAB-donor-CU，完成该终端设备和/或子IAB节点的跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备和/或子IAB节点中断的数据传输。并且，该方法对跨IAB-donor-CU的IAB节点移植或拓扑自适应过程中对移植IAB节点的IAB-MT、IAB-DU和移植IAB节点服务的终端设备和/或子IAB节点的切换或移植或拓扑自适应的信令流程限制小，保证更灵活的跨IAB-donor-CU的IAB节点移植或拓扑自适应过程。
在本申请实施例中，也可以由源IAB宿主节点控制与第一IAB节点与其服务的终端设备和/或子IAB节点的业务的中断。
例如，源IAB宿主节点收到目标IAB宿主节点的切换反馈后，源IAB宿主节点先向第一IAB节点发送包括第一RRC重配置消息的第一下行消息，该第一RRC重配置消息来自目标IAB宿主；源IAB宿主节点在收到来自第一IAB节点的第一下行消息的反馈消息后，向第一IAB节点的源父IAB节点发送包括第二RRC重配置消息的第二下行消息。第一IAB节点的源父IAB节点在收到该第二下行消息之后，向第一IAB节点发送该第二RRC重配置消息。第一IAB节点在收到了该第二RRC重配置消息后，中断与其服务的终端设备和/或子IAB节点的业务。
在本申请实施例中，第一IAB节点收到源IAB宿主节点发送的包括第一RRC重配置消息的第一下行消息后，第一IAB节点可以基于指示或基于实现或基于定时器或基于一个数量和/或比例来向该源IAB宿主节点发送第一下行消息的反馈消息。
例如，当满足第二条件时，第一IAB节点向该源IAB宿主节点发送第一下行消息的反馈消息。
例如，该第二条件可以包括以下条件中的至少一个：
向该第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到该第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第二定时器超时；
该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第三比例；以及
该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的该第一 IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第四比例。
以下，针对各种情况进行示例性的说明。
1)第一IAB节点可以基于指示来中断与该终端设备和/或该子IAB节点的业务，例如，基于实现来中断。例如，为第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或者收到大部分终端设备和/或子IAB节点的RRC重配置完成消息时，中断与该终端设备和/或该子IAB节点的业务，应用之前存储的来自源父IAB节点的第二RRC重配置消息中的新配置，向目标父IAB节点发起随机接入过程。
例如，为第一IAB节点服务的所有终端设备发送了RRC重配置消息或者收到大部分终端设备的RRC重配置完成消息时，中断与所有这些终端设备或这些收到了RRC重配置完成消息的终端设备的业务。
又例如，为第一IAB节点服务的所有子IAB节点发送了RRC重配置消息或者收到大部分子IAB节点的RRC重配置完成消息时，中断与所有这些子IAB节点或这些收到了RRC重配置完成消息的子IAB节点的业务。
又例如，为第一IAB节点服务的所有终端设备和所有子IAB节点发送了RRC重配置消息或者收到大部分终端设备和子IAB节点的RRC重配置完成消息时，中断与所有这些终端设备和子IAB节点的业务或中断与这些收到了RRC重配置完成消息的终端设备和子IAB节点的业务。
2)第一IAB节点可以基于定时器来中断与该终端设备和/或该子IAB节点的业务。例如，当第二定时器超时时，中断与服务的该终端设备和/或该子IAB节点的业务，应用之前存储的来自源父IAB节点的第二RRC重配置消息，向目标父IAB节点发起随机接入过程。例如，可以是在第一IAB节点收到第二定时器的值时立即启动第二定时器，或者，也可以是收到第二定时器的值且收到源父IAB节点传递的来自目标IAB宿主节点的第二RRC重配置消息，启动第二定时器。
例如，当第二定时器超时时，中断与服务的终端设备的业务。
又例如，当第二定时器超时时，中断与服务的子IAB节点的业务。
又例如，当第二定时器超时时，中断与服务的终端设备和子IAB节点的业务。
3)第一IAB节点可以基于终端设备和/或子IAB节点的数量和/或比例，或者发送消息的数量和/或比例，或者收到消息或反馈的数量和/或比例来中断与终端设备和/或子IAB节点的业务，例如，
当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第三比例时，第一IAB节点中断与所有这些终端设备和/或子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和/或子IAB节点的业务；也就是说，基于第一IAB节点向其发送了RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量和/或比例来中断与该终端设备和/或该子IAB节点的业务。
或者是，当该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第四比例时，第一IAB节点中断与该终端设备和/或该子IAB节点的业务；也就是说，基于第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的来自终端设备和/或子IAB节点的RRC重配置完成消息的数量和/或比例来中断与该终端设备和/或该子IAB节点的业务。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的比例达到第三比例 时，第一IAB节点中断与所有这些终端设备的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备的业务；或者是，当该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例达到第四比例时，第一IAB节点中断与所有这些终端设备的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备的业务。
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的比例达到第三比例时，第一IAB节点中断与所有这些子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的比例达到第四比例时，第一IAB节点中断与所有这些子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务；
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB 节点的比例达到第三比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的比例达到第四比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和子IAB节点的业务。
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的比例达到第三比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和所有子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例达到第四比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断与这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的终端设备和子IAB节点的业务。
又例如，当该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的数量达到第三 配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的比例达到第三比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断所有终端设备和这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务；或者是，当该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的子IAB节点的RRC重配置完成消息的比例达到第四比例时，第一IAB节点中断与所有这些终端设备和子IAB节点的业务或中断所有终端设备和这些向其发送了RRC重配置消息或收到了其发送的RRC重配置消息的反馈的子IAB节点的业务。
在本申请实施例中，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量与第一IAB节点服务的终端设备和/或子IAB节点的总数量之比。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备的数量与第一IAB节点服务的终端设备子IAB节点的总数量之比。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的子IAB节点的数量与第一IAB节点的子IAB节点的总数量之比。
例如，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置 消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的比例指的是：该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和子IAB节点的数量与第一IAB节点服务的终端设备和子IAB节点的总数量之比。
在本申请实施例中，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，在本申请实施例中，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，在本申请实施例中，该第一IAB节点向该第一IAB节点的子IAB节点发送的RRC重配置消息或收到的该第一IAB节点的子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点的子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点的子IAB节点发送的RRC重配置消息或收到的该第一IAB节点的子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点的子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配 置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
在本申请实施例中，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，在本申请实施例中，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息或收到的该第一IAB节点服务的终端设备的RRC重配置消息的反馈或收到的该第一IAB节点服务的终端设备的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
例如，在本申请实施例中，该第一IAB节点向该第一IAB节点的子IAB节点发送的RRC重配置消息或收到的该第一IAB节点的子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点的子IAB节点的RRC重配置完成消息的比例指的是：该第一IAB节点向该第一IAB节点的子IAB节点发送的RRC重配置消息或收到的该第一IAB节点的子IAB节点的RRC重配置消息的反馈或收到的该第一IAB节点的子IAB节点的RRC重配置完成消息的数量与该第一IAB节点发送的RRC重配置消息的数量之比。
以上，针对由源IAB宿主节点控制与移植IAB节点服务的终端设备和/或子IAB节点的业务中断的情况进行了说明。对于该情况，第一IAB节点存储收到的来自它 服务的终端设备和/或子IAB节点的RRC重配置完成消息，将包括该RRC重配置完成消息的第一上行消息通过目标路径传输给目标IAB-donor-CU，完成该终端设备和/或子IAB节点的跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备和/或子IAB节点中断的数据传输。并且，该方法通过控制跨IAB-donor-CU的IAB节点移植或拓扑自适应过程中第一IAB节点的IAB-MT、IAB-DU和第一IAB节点服务的终端设备和/或子IAB节点的切换或移植或拓扑自适应的执行顺序，减少第一IAB节点与其服务终端设备以及子IAB节点服务的终端设备的业务中断。
在本申请实施例中，在步骤801之前，如图8所示，例如，该方法还可以包括：
步骤805：接收来自源IAB宿主节点的第一下行消息，
该第一下行消息包括第一RRC重配置消息，该第一RRC重配置消息包括该目标IAB宿主节点配置的密钥。例如，源IAB宿主节点收到目标IAB宿主节点的切换反馈后，源IAB宿主节点先向第一IAB节点发送包括第一RRC重配置消息的第一下行消息。
在本申请实施例中，例如，该第一下行消息是第二F1消息。
例如，该第一下行消息包括以下的至少一个：
第二指示信息，该第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
例如，第二指示信息是上面第一条件和第二条件中第一IAB节点中断与该终端设备和/或该子IAB节点的业务所基于的“指示”。
第一定时器或第二定时器的值，该第一定时器或第二定时器用于该第一IAB节点发起与目标父IAB节点的随机接入过程、该第一IAB节点的分布单元与该目标IAB宿主节点的集中单元建立F1接口以及该第一IAB节点向该源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
在本申请实施例中，第一RRC重配置消息的反馈例如是UE上下文修改响应消息或上行RRC消息传递消息。
在本申请实施例中，终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例可参见上面第一条件和第二条件中的具体内容。
例如，终端设备的数量是指上面所述的第一配置值或第二配置值，终端设备的比例是指上面所述的第一比例或第二比例，或者是，终端设备的数量是指上面所述的第三配置值或第四配置值，终端设备的比例是指上面所述的第三比例或第四比例。
在本申请实施例中，第一配置值、第二配置值、第三配置值、第四配置值以及第一比例、第二比例、第三比例、第四比例的具体数值可以根据实际情况而设置。
例如，对于第一IAB节点服务的终端设备和子IAB节点，可以使用一个配置值；或者，
对于第一IAB节点服务的终端设备和子IAB节点，使用2个配置值，例如，一个配置值用于终端设备，一个配置值用于子IAB节点；或者，
对于第一IAB节点服务的终端设备和子IAB节点，使用一个比例；或者，
对于第一IAB节点服务的终端设备和子IAB节点，使用2个比例，例如，一个比例用于终端设备，一个比例用于子IAB节点；或者，
对于第一IAB节点服务的终端设备和子IAB节点，使用一个配置值和一个比例，例如，一个配置值用于终端设备，一个比例用于子IAB节点，或者，一个比例用于子终端设备，一个配置值用于子IAB节点。
另外，对于第一IAB节点服务的终端设备和子IAB节点，可以使用定时器的一个值；或者，
对于第一IAB节点服务的终端设备和子IAB节点，可以使用定时器的2个值，一个值用于终端设备，一个值用于子IAB节点。
在步骤803中，通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。图10是本申请实施例1的实现步骤803的方法的一示意图。如图10所示，该方法包括：
步骤1001：该第一IAB节点将包含该RRC重配置完成消息的第二上行消息发送给源IAB宿主节点；以及
步骤1002：该源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
这样，第一IAB节点将包括在第二上行消息里的RRC重配置完成消息经源IAB-donor-CU传输给目标IAB-donor-CU，完成该终端设备跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备中断的数 据传输。并且，该方法对当前IAB节点的影响小，能更快地应用新的功能，即跨IAB-donor-CU的IAB节点的移植或切换或拓扑自适应，使得整个系统能更好地进行IAB-donor-CU间的负荷平衡等。
在步骤1002中，该源IAB宿主节点可以通过Xn接口或NG接口将包括该RRC重配置完成消息的Xn消息或NG消息发送给目标IAB宿主节点。
在本申请实施例中，该第二上行消息可以包括第三指示信息，该第三指示信息用于指示该源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
例如，该第二上行消息是第三F1消息。
例如，该第三F1消息是终端设备上下文建立响应消息或终端设备上下文修改响应消息中的至少一个。
例如，与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端设备的该RRC重配置完成消息包括在该终端设备上下文建立响应消息或该终端设备上下文修改响应消息中；或者，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括至少一条该RRC重配置完成消息，对于至少一条该RRC重配置完成消息中的一条该RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息关联的终端相同或不同。例如，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括两条RRC重配置完成消息，其中一条RRC重配置完成消息来自该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端，另外一条RRC重配置完成消息来自与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端不同的一个终端。
又例如，该第三F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
例如，所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在 一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
在本申请实施例中，对于第一IAB节点服务的终端设备和/或子IAB节点，可以全部采用步骤802，也可以全部采用步骤803，或者，也可以部分采用步骤802，部分采用步骤803。
例如，该RRC重配置完成消息包括第一RRC重配置完成消息以及第二RRC重配置完成消息，该第一RRC重配置完成消息是该第一IAB节点服务的第一终端设备和/或第一子IAB节点生成的RRC重配置完成消息，该第二RRC重配置完成消息是该第一IAB节点服务的第二终端设备和/或第二子IAB节点生成的RRC重配置完成消息，该第一IAB节点通过目标路径将包含该第一RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，并且，该第一IAB节点将包含该第二RRC重配置完成消息的第二上行消息发送给源IAB宿主节点以通过该源IAB宿主节点将该第二RRC重配置完成消息发送给目标IAB宿主节点。
在本申请实施例中，对于第一IAB节点服务的子IAB节点所服务的终端设备，也可以采用步骤802或步骤803进行处理。或者，也可以部分采用步骤802，部分采用步骤803。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例2
本申请实施例提供了一种IAB节点的移植方法，该方法应用于第一IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点。该方法对应于实施例1，相同的内容可参考实施例1中的记载。
图11是本申请实施例2的IAB节点的移植方法的一示意图。如图11所示，该方法包括：
步骤1101：接收来自第一IAB节点的第二上行消息，该第二上行消息包括该第 一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
步骤1102：将该RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
在步骤1102中，源IAB宿主节点可以通过Xn接口或NG接口将包括该RRC重配置完成消息的Xn消息或NG消息发送给目标IAB宿主节点。
在本申请实施例中，该第二上行消息可以包括第三指示信息，该第三指示信息用于指示该源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
例如，该第二上行消息是第三F1消息。
例如，该第三F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个，或者，该第三F1消息是上行RRC消息传递消息。
例如，与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端设备的该RRC重配置完成消息包括在该终端设备上下文建立响应消息或该终端设备上下文修改响应消息中；或者，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括至少一条该RRC重配置完成消息，对于至少一条该RRC重配置完成消息中的一条该RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息关联的终端相同或不同。
例如，所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
在本申请实施例中，如图11所示，例如，该方法还包括：
步骤1103：向该第一IAB节点发送第一下行消息，该第一下行消息包括第一RRC重配置消息；以及
步骤1104：向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
在本申请实施例中，不对步骤1103和步骤1104的执行顺序进行限制。
在本申请实施例中，该第二上行消息也作为该第一下行消息的反馈消息；或者，该方法还包括：接收该第一下行消息的反馈消息。
图12是本申请实施例2的IAB节点的移植方法的另一示意图。如图12所示，该方法包括：
步骤1201：接收来自该第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及
步骤1202：向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
在本申请实施例中，当该第一IAB宿主节点接收来自该第一IAB节点的第一RRC重配置消息的反馈时，向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
在本申请实施例中，如图12所示，例如，该方法还包括：
步骤1203：向该第一IAB节点发送该第一下行消息，该第一下行消息包括该第一RRC重配置消息。
在本申实施例中，该第一RRC重配置消息包括该第一IAB节点的目标IAB宿主节点配置的密钥。
例如，该第一下行消息是第二F1消息。
例如，该第一下行消息包括以下的至少一个：
第二指示信息，该第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
例如，第二指示信息是上面第一条件和第二条件中第一IAB节点中断与该终端设备和/或该子IAB节点的业务所基于的“指示”。
第一定时器或第二定时器的值，该第一定时器或第二定时器用于该第一IAB节点发起与目标父IAB节点的随机接入过程、该第一IAB节点的分布单元与该目标IAB宿主节点的集中单元建立F1接口以及该第一IAB节点向该源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例3
本申请实施例提供了一种IAB节点的移植方法，该方法应用于第二IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点。该方法对应于实施例1，相同的内容可参考实施例1中的记载。
图13是本申请实施例3的IAB节点的移植方法的一示意图。如图13所示，该方法包括以下步骤中的至少一个：
步骤1301：接收该第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，
步骤1302：接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，
该RRC重配置完成消息是该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
在本申请实施例中，对于第一IAB节点服务的终端设备和/或子IAB节点，当实施例1中全部采用步骤802，那么相应的，在实施例3中，也全部采用1301；当实施例1中全部采用步骤803，那么相应的，在实施例3中，也全部采用1302；当实施例1中部分采用步骤802，部分采用步骤803时，那么相应的在实施例3中，部分采用步骤1301，部分采用步骤1302。
在本申请实施例中，该目标路径是该第一IAB节点的分布单元与该目标IAB宿主节点的集中单元之间的F1接口。
在本申请实施例中，来自源IAB宿主节点的该RRC重配置完成消息通过Xn接口或NG接口发送。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息 发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例4
本申请实施例提供了一种IAB节点的移植方法，该方法应用于第一IAB节点、第一IAB宿主节点和第二IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点。该方法对应于实施例1至3，相同的内容可参考实施例1至3中的记载。
在本申请实施例中，第二IAB节点是第一IAB节点的源父IAB节点，第三IAB节点是第一IAB节点的目标父IAB节点。
图14是本申请实施例4的IAB节点的移植方法的一示意图。在图14中，以第一IAB节点服务第一终端设备为例进行说明，但是，第一IAB节点还可以服务其他的终端设备，另外，第一IAB节点还可以服务至少一个子IAB节点。
如图14所示，该方法包括：
步骤1401：第一IAB宿主节点向第一IAB节点发送包括第一RRC重配置消息的第一下行消息；
步骤1402：第一IAB节点向第一IAB宿主节点发送第一下行消息的反馈消息；
步骤1403：第一IAB节点向第一终端设备发送第一RRC重配置消息；
步骤1404：第一终端设备向第一IAB节点发送RRC重配置完成消息；
步骤1405：第一IAB节点基于实现或计时器或计数器的机制来控制与第一终端设备的业务中断；
步骤1406：第一IAB宿主节点向第二IAB节点发送包括第二RRC重配置消息的第二下行消息；
步骤1407：第二IAB节点向第一IAB节点发送第二RRC重配置消息；
步骤1408：第一IAB节点根据该第二RRC重配置消息，向第三IAB节点发起随机接入过程；以及
步骤1409：第一IAB节点通过F1接口向第二IAB宿主节点发送包含该RRC重 配置完成消息的第一上行消息。
这样，该方法对跨IAB-donor-CU的IAB节点移植或拓扑自适应过程中对移植IAB节点的IAB-MT、IAB-DU和移植IAB节点服务的终端设备和/或子IAB节点的切换或移植或拓扑自适应的信令流程限制小，保证更灵活的跨IAB-donor-CU的IAB节点移植或拓扑自适应过程。
在本申请实施例中，对于步骤1401与步骤1406之间、以及步骤1405与步骤1407之间的执行顺序没有限制。
在本申请实施例中，步骤1401在步骤1402之前，步骤1401在步骤1403之前，步骤1403在步骤1404之前，步骤1405在步骤1408之前，步骤1408在步骤1409之前，对于其他步骤的执行顺序没有限制。
也就是说，第一下行消息与第二下行消息没有先后顺序的限制；在第一IAB节点收到第一下行消息后，应用基于实现或定时器或计数的机制；执行基于实现或定时器或计数的机制与来自第二IAB节点的第二RRC重配置消息的接收没有先后顺序的限制。
由上述实施例可知，第一IAB节点存储收到的来自它服务的终端设备和/或子IAB节点的RRC重配置完成消息，将包括该RRC重配置完成消息的第一上行消息通过目标路径传输给目标IAB-donor-CU，完成该终端设备和/或子IAB节点的跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备和/或子IAB节点中断的数据传输。并且，该方法对跨IAB-donor-CU的IAB节点移植或拓扑自适应过程中对移植IAB节点的IAB-MT、IAB-DU和移植IAB节点服务的终端设备和/或子IAB节点的切换或移植或拓扑自适应的信令流程限制小，保证更灵活的跨IAB-donor-CU的IAB节点移植或拓扑自适应过程。
实施例5
本申请实施例提供了一种IAB节点的移植方法，该方法应用于第一IAB节点、第一IAB宿主节点和第二IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点。该方法对应于实施例1至3，相同的内容可参考实施例1至3中的记载。
在本申请实施例中，第二IAB节点是第一IAB节点的源父IAB节点，第三IAB节点是第一IAB节点的目标父IAB节点。
图15是本申请实施例5的IAB节点的移植方法的一示意图。在图15中，以第一IAB节点服务第一终端设备为例进行说明，但是，第一IAB节点还可以服务其他的终端设备，另外，第一IAB节点还可以服务至少一个子IAB节点。
如图15所示，该方法包括：
步骤1501：第一IAB宿主节点向第一IAB节点发送包括第一RRC重配置消息的第一下行消息；
步骤1502：第一IAB节点向第一终端设备发送第一RRC重配置消息；
步骤1503：第一终端设备向第一IAB节点发送RRC重配置完成消息；
步骤1504：第一IAB节点基于实现或计时器或计数器的机制来控制向第一IAB宿主节点发送第一下行消息的反馈消息；
步骤1505：第一IAB节点向第一IAB宿主节点发送第一下行消息的反馈消息；
步骤1506：第一IAB宿主节点向第二IAB节点发送包括第二RRC重配置消息的第二下行消息；
步骤1507：第二IAB节点向第一IAB节点发送第二RRC重配置消息；
步骤1508：第一IAB节点根据该第二RRC重配置消息，向第三IAB节点发起随机接入过程；以及
步骤1509：第一IAB节点通过F1接口向第二IAB宿主节点发送包含该RRC重配置完成消息的第一上行消息。
这样，该方法通过控制跨IAB-donor-CU的IAB节点移植或拓扑自适应过程中第一IAB节点的IAB-MT、IAB-DU和第一IAB节点服务的终端设备和/或子IAB节点的切换或移植或拓扑自适应的执行顺序，减少第一IAB节点与其服务终端设备以及子IAB节点服务的终端设备的业务中断。
在本申请实施例中，在执行了步骤1505之后，执行步骤1506。
由上述实施例可知，第一IAB节点存储收到的来自它服务的终端设备和/或子IAB节点的RRC重配置完成消息，将包括该RRC重配置完成消息的第一上行消息通过目标路径传输给目标IAB-donor-CU，完成该终端设备和/或子IAB节点的跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备和/或子IAB节点中断的数据传输。并且，该方法通过控制跨IAB-donor-CU的IAB节点移植或拓扑自适应过程中第一IAB节点的IAB-MT、IAB-DU和第一IAB 节点服务的终端设备和/或子IAB节点的切换或移植或拓扑自适应的执行顺序，减少第一IAB节点与其服务终端设备以及子IAB节点服务的终端设备的业务中断。
实施例6
本申请实施例提供了一种IAB节点的移植方法，该方法应用于第一IAB节点、第一IAB宿主节点和第二IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点。该方法对应于实施例1至3，相同的内容可参考实施例1至3中的记载。
在本申请实施例中，第二IAB节点是第一IAB节点的源父IAB节点，第三IAB节点是第一IAB节点的目标父IAB节点。
图16是本申请实施例6的IAB节点的移植方法的一示意图。在图16中，以第一IAB节点服务第一终端设备为例进行说明，但是，第一IAB节点还可以服务其他的终端设备，另外，第一IAB节点还可以服务至少一个子IAB节点。
如图16所示，该方法包括：
步骤1601：第一IAB宿主节点向第一IAB节点发送包括第一RRC重配置消息的第一下行消息；
步骤1602：第一IAB节点向第一IAB宿主节点发送第一下行消息的反馈消息；
步骤1603：第一IAB节点向第一终端设备发送第一RRC重配置消息；
步骤1604：第一终端设备向第一IAB节点发送RRC重配置完成消息；
步骤1605：第一IAB节点通过F1接口向第一IAB宿主节点发送包含该RRC重配置完成消息的第二上行消息；以及
步骤1606：第一IAB宿主节点通过Xn接口将包括该RRC重配置完成消息的Xn消息发送给第二IAB宿主节点。
这样，第一IAB节点将包括在第二上行消息里的RRC重配置完成消息经源IAB-donor-CU传输给目标IAB-donor-CU，完成该终端设备跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备中断的数据传输。并且，该方法对当前IAB节点的影响小，能更快地应用新的功能，即跨IAB-donor-CU的IAB节点的移植或切换或拓扑自适应，使得整个系统能更好地进行IAB-donor-CU间的负荷平衡等。
在本申请实施例中，可以在步骤1601之后执行步骤1602，即，在第一IAB节点 收到包括第一RRC重配置消息的第一下行消息后，第一IAB节点立即向第一IAB宿主节点发送第一下行消息的反馈消息。或者，也可以是，在步骤1605中，该第二上行消息也作为第一下行消息的反馈消息，而不执行步骤1602。
由上述实施例可知，第一IAB节点将包括在第二上行消息里的RRC重配置完成消息经源IAB-donor-CU传输给目标IAB-donor-CU，完成该终端设备跨IAB-donor-CU的移植或切换或拓扑自适应，使得目标IAB-donor-CU能够重新开始与该终端设备中断的数据传输。并且，该方法对当前IAB节点的影响小，能更快地应用新的功能，即跨IAB-donor-CU的IAB节点的移植或切换或拓扑自适应，使得整个系统能更好地进行IAB-donor-CU间的负荷平衡等。
实施例7
本申请实施例提供了一种IAB节点的移植装置，该装置应用于第一IAB节点。由于该装置解决问题的原理与实施例1的方法类似，因此其具体的实施可以参照实施例1所述的方法的实施，内容相同或相关之处不再重复说明。
图17是本申请实施例7的IAB节点的移植装置的一示意图，如图17所示，装置1700包括：
第一接收单元1701，其用于接收该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
第一发送单元1702，其用于通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
图18是本申请实施例7的第一发送单元的一示意图，如图18所示，第一发送单元1702包括：
第一存储单元1801，其用于存储该RRC重配置完成消息；
第一建立单元1802，其用于建立该目标路径；以及
第二发送单元1803，其用于通过该目标路径将该第一上行消息发送给目标IAB宿主节点。
如图18所示，该第一发送单元1702还可以包括:
第一中断单元1804，其用于当满足第一条件时，中断与该终端设备和/或该子IAB节点的业务。
例如，该第一条件包括以下条件中的至少一个：
向该第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到该第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第一定时器超时；
该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第一配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第一比例；以及
该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第二比例。
如图18所示，该第一发送单元1702还可以包括:
第三发送单元1805，其用于当满足第二条件时，向该源IAB宿主节点发送第一下行消息的反馈消息。
例如，该第二条件包括以下条件中的至少一个：
向该第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到该第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第二定时器超时；
该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第三配置值，和/或，该第一IAB节点向其发送RRC重配置消息或收到其发送的RRC 重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第三比例；以及
该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的数量或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，该第一IAB节点向该第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第四比例。
例如，如图17所示，该装置1700还包括：
第二接收单元1703，其用于接收第一指示信息，
该第一指示信息用于指示该RRC重配置完成消息是使用目标IAB宿主节点配置的安全配置保护的RRC重配置完成消息，或者，指示该RRC重配置完成消息是发送给该目标IAB宿主节点的，或者，指示该第一IAB节点存储该RRC重配置完成消息。
例如，该第一指示信息包括在RLC组头里，或者，包括在MAC组头里。
例如，如图17所示，该装置1700还包括：
第二存储单元1704，其用于该第一IAB节点的分布单元的MAC层或RLC层或BAP层存储该RRC重配置完成消息。
例如，第一存储单元1801包括第二存储单元1704。
例如，该装置还包括：第一传递单元，其用于该第一IAB节点的分布单元的MAC层将该第一指示信息传递给RLC层。或者，还包括：第三存储单元，其用于当第一IAB节点IAB-DU接收到该第一指示信息时，IAB-MT的BAP层存储该RRC重配置完成消息；或者，第四存储单元，其用于对于第一指示信息来自该第一IAB节点服务的子IAB节点的情况，IAB-DU的BAP层存储该RRC重配置完成消息，或者，第二传递单元，其用于该第一IAB节点的IAB-DU的MAC层或RLC层将该第一指示信息传递给BAP层。
有关存储该RRC重配置完成消息的具体内容可参考实施例1中的记载，此处不再赘述。
例如，如图18所示，该第一发送单元1702还包括：
第三接收单元1806，其用于接收来自源父IAB(parent IAB)节点的第二RRC重配置消息；
随机接入单元1807，其用于根据该第二RRC重配置消息，向该第一IAB节点的目标父节点发起随机接入过程；以及
第一切换单元1808，其用于切换至目标路径。
在本申请实施例中，该目标路径是该第一IAB节点的分布单元(DU)与该目标IAB宿主节点的集中单元(CU)之间的F1接口。
例如，该第一上行消息是第一F1消息。
例如，该第一F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个。
例如，与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端设备的该RRC重配置完成消息包括在该终端设备上下文建立响应消息或该终端设备上下文修改响应消息中；或者，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括至少一条该RRC重配置完成消息，对于至少一条该RRC重配置完成消息中的一条该RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息关联的终端设备相同或不同。
例如，该第一F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
例如，所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
例如，如图17所示，该装置1700还包括：
第四接收单元1705，其用于接收来自源IAB宿主节点的第一下行消息，
该第一下行消息包括第一RRC重配置消息，该第一RRC重配置消息包括该目标IAB宿主节点配置的密钥。
例如，该第一下行消息是第二F1消息。
例如，该第一下行消息包括以下的至少一个：
第二指示信息，该第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
第一定时器或第二定时器的值，该第一定时器或第二定时器用于该第一IAB节点发起与目标父IAB节点的随机接入过程、该第一IAB节点的分布单元与该目标IAB宿主节点的集中单元建立F1接口以及该第一IAB节点向该源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
例如，如图18所示，该第一发送单元1702还包括：
第四发送单元1809，其用于将包含该RRC重配置完成消息的第二上行消息发送给源IAB宿主节点，
并且，该RRC重配置完成消息由该源IAB宿主节点发送给目标IAB宿主节点。
例如，该RRC重配置完成消息由该源IAB宿主节点通过Xn接口或NG接口发送给目标IAB宿主节点。
例如，该第二上行消息包括第三指示信息，该第三指示信息用于指示该源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
例如，该第二上行消息是第三F1消息。
例如，该第三F1消息是终端设备上下文建立响应消息或终端设备上下文修改响应消息中的至少一个。
例如，与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端设备的该RRC重配置完成消息包括在该终端设备上下文建立响应消息或该终端设备上下文修改响应消息中；或者，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括至少一条该RRC重配置完成消息，对于至少一条该RRC重配置完成消息中的一条该RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息关联的 终端相同或不同。
例如，该第三F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
例如，所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
例如，该RRC重配置完成消息包括第一RRC重配置完成消息以及第二RRC重配置完成消息，该第一RRC重配置完成消息是该第一IAB节点服务的第一终端设备和/或第一子IAB节点生成的RRC重配置完成消息，该第二RRC重配置完成消息是该第一IAB节点服务的第二终端设备和/或第二子IAB节点生成的RRC重配置完成消息，该第一IAB节点通过目标路径将包含该第一RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，并且，该第一IAB节点将包含该第二RRC重配置完成消息的第二上行消息发送给源IAB宿主节点以通过该源IAB宿主节点将该第二RRC重配置完成消息发送给目标IAB宿主节点。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例8
本申请实施例提供了一种IAB节点的移植装置，该装置应用于第一IAB宿主节点，该第一IAB宿主节点是第一IAB节点的源IAB宿主节点。由于该装置解决问题的原理与实施例2的方法类似，因此其具体的实施可以参照实施例2所述的方法的实 施，内容相同或相关之处不再重复说明。
图19是本申请实施例8的IAB节点的移植装置的一示意图，如图19所示，装置1900包括：
第五接收单元1901，其用于接收来自第一IAB节点的第二上行消息，该第二上行消息包括该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
第五发送单元1902，其用于将该RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
在本申请实施例中，该第五发送单元1902通过Xn接口或NG接口将包括该RRC重配置完成消息的Xn消息或NG消息发送给目标IAB宿主节点。
例如，该第二上行消息包括第三指示信息，该第三指示信息用于指示该源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
例如，该第二上行消息是第三F1消息。
例如，该第三F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个，或者，该第三F1消息是上行RRC消息传递消息。
例如，与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息对应的终端设备的该RRC重配置完成消息包括在该终端设备上下文建立响应消息或该终端设备上下文修改响应消息中；或者，该终端设备上下文建立响应消息或该终端设备上下文修改响应消息包括至少一条该RRC重配置完成消息，对于至少一条该RRC重配置完成消息中的一条该RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与该终端设备上下文建立响应消息或该终端设备上下文修改响应消息关联的终端相同或不同。
例如，所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在 一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
例如，如图19所示，装置1900还包括：
第六发送单元1903，其用于向该第一IAB节点发送第一下行消息，该第一下行消息包括第一RRC重配置消息。
第七发送单元1904，其用于向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
例如，该第二上行消息也作为该第一下行消息的反馈消息；或者，
该装置1900还包括：第六接收单元1905，其用于接收该第一下行消息的反馈消息。
图20是本申请实施例8的IAB节点的移植装置的另一示意图，如图20所示，装置2000包括：
第七接收单元2001，其用于接收来自该第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及
第七发送单元2002，其用于向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
例如，当该第一IAB宿主节点接收来自该第一IAB节点的第一RRC重配置消息的反馈时，向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
例如，如图20所示，装置2000还包括：
第八发送单元2003，其用于向该第一IAB节点发送该第一下行消息，该第一下行消息包括该第一RRC重配置消息。
例如，该第一RRC重配置消息包括该第一IAB节点的目标IAB宿主节点配置的密钥。
例如，该第一下行消息是第二F1消息。
例如，该第一下行消息包括以下的至少一个：
第二指示信息，该第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
第一定时器或第二定时器的值，该第一定时器或第二定时器用于该第一IAB节 点发起与目标父IAB节点的随机接入过程、该第一IAB节点的分布单元与该目标IAB宿主节点的集中单元建立F1接口以及该第一IAB节点向该源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例9
本申请实施例提供了一种IAB节点的移植装置，该装置应用于第二IAB宿主节点，该第二IAB宿主节点是第一IAB节点的目标IAB宿主节点。由于该装置解决问题的原理与实施例3的方法类似，因此其具体的实施可以参照实施例3所述的方法的实施，内容相同或相关之处不再重复说明。
图21是本申请实施例9的IAB节点的移植装置的一示意图，如图21所示，装置2100包括：
第八接收单元2101，其用于接收该第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，
第九接收单元2102，其用于接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，
该RRC重配置完成消息是该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
例如，该目标路径是该第一IAB节点的分布单元与该目标IAB宿主节点的集中单元之间的F1接口。
例如，来自源IAB宿主节点的该RRC重配置完成消息通过Xn接口或NG接口发送。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送 给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例10
本申请实施例提供了一种网络设备，该网络设备包括如实施例7所述的IAB节点的移植装置。
图22是本发明实施例10的网络设备的系统构成的一示意框图。如图22所示，终端设备2200可以包括处理器2210和存储器2220；存储器2220耦合到处理器2210。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
在一个实施方式中，IAB节点的移植装置的功能可以被集成到处理器2210中。
处理器2210可以被配置为：接收该第一IAB节点服务的终端设备和/或子IAB(descendant IAB)节点的RRC重配置完成消息；以及通过目标路径将包含该RRC重配置完成消息的第一上行消息发送给目标IAB(IAB-donor)宿主节点，或者，通过源IAB宿主节点将该RRC重配置完成消息发送给目标IAB宿主节点。
在另一个实施方式中，IAB节点的移植装置可以与处理器2210分开配置，例如可以将IAB节点的移植装置配置为与处理器2210连接的芯片，通过处理器2210的控制来实现IAB节点的移植装置的功能。
此外，如图22所示，网络设备2200还可以包括：收发机2240和天线2250等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备2200也并不是必须要包括图22中所示的所有部件；此外，网络设备2200还可以包括图22中没有示出的部件，可以参考现有技术。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例11
本发明实施例提供了一种网络设备，该网络设备包括如实施例8所述的IAB节点的移植装置。
图23是本发明实施例11的网络设备的系统构成的一示意框图。如图23所示，网络设备2300可以包括：处理器(processor)2310和存储器2320；存储器2320耦合到处理器2310。其中该存储器2320可存储各种数据；此外还存储信息处理的程序2330，并且在处理器2310的控制下执行该程序2330，以接收终端设备发送的各种信息、并且向终端设备发送各种信息。
在一个实施方式中，IAB节点的移植装置的功能可以被集成到处理器2310中。其中，处理器2310可以被配置为：接收来自第一IAB节点的第二上行消息，该第二上行消息包括该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及将该RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
或者，处理器2310可以被配置为：接收来自该第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及向该第一IAB节点的源父IAB节点发送第二下行消息，该第二下行消息包括第二RRC重配置消息。
在另一个实施方式中，IAB节点的移植装置可以与处理器2310分开配置，例如可以将IAB节点的移植装置配置为与处理器2310连接的芯片，通过处理器2310的控制来实现IAB节点的移植装置的功能。
此外，如图23所示，网络设备2300还可以包括：收发机2340和天线2350等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备2300也并不是必须要包括图23中所示的所有部件；此外，网络设备2300还可以包括图23中没有示出的部件，可以参考现有技术。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例12
本发明实施例提供了一种网络设备，该网络设备包括如实施例9所述的IAB节点的移植装置。
图24是本发明实施例12的网络设备的系统构成的一示意框图。如图24所示，网络设备2400可以包括：处理器(processor)2410和存储器2420；存储器2420耦合到处理器2410。其中该存储器2420可存储各种数据；此外还存储信息处理的程序2430，并且在处理器2410的控制下执行该程序2430，以接收终端设备发送的各种信息、并且向终端设备发送各种信息。
在一个实施方式中，IAB节点的移植装置的功能可以被集成到处理器2410中。其中，处理器2410可以被配置为：接收该第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，该RRC重配置完成消息是该第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
在另一个实施方式中，IAB节点的移植装置可以与处理器2410分开配置，例如可以将IAB节点的移植装置配置为与处理器2410连接的芯片，通过处理器2410的控制来实现IAB节点的移植装置的功能。
此外，如图24所示，网络设备2400还可以包括：收发机2440和天线2450等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备2400也并不是必须要包括图24中所示的所有部件；此外，网络设备2400还可以包括图24中没有示出的部件，可以参考现有技术。
由上述实施例可知，通过目标路径将包含RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，或者，通过源IAB宿主节点将RRC重配置完成消息发送给目标IAB宿主节点，目标IAB宿主节点能够获得移植IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息，从而获知该终端设备和/或子IAB节点是否完成路径的切换，因此，能够重新开始为了进行该移植IAB节点在IAB-donor-CU间的移植或拓扑自适应过程而与该终端设备和/或子IAB节点中断的数据传输。
实施例13
本申请实施例提供了一种通信系统。
例如，该通信系统包括第一网络设备、第二网络设备以及终端设备，该第一网络设备是根据实施例11所述的网络设备，该第二网络设备是根据实施例12所述的网络 设备。也就是说，终端设备直接与IAB宿主节点连接。
图25是本申请实施例13的通信系统的一示意图。如图25所示，通信系统2500包括第一网络设备2501、第二网络设备2502以及终端设备2503，终端设备2503直接与作为IAB宿主节点的第一网络设备2501或第二网络设备2502连接。
又例如，该通信系统包括第一网络设备以及终端设备，该第一网络设备是根据实施例11或12所述的网络设备，该终端设备直接与IAB宿主节点连接，该IAB宿主节点是源IAB宿主节点或目标IAB宿主节点。
图26是本申请实施例13的通信系统的又一示意图。如图26所示，通信系统2600包括第一网络设备2601以及终端设备2602，终端设备2602直接与作为IAB宿主节点的第一网络设备2601连接。
又例如，该通信系统包括第一网络设备、第二网络设备、第三网络设备以及终端设备，该第一网络设备是根据实施例11所述的网络设备，该第二网络设备是根据实施例12所述的网络设备，该第三网络设备是根据实施例10所述的网络设备。也就是说，第三网络设备作为中继节点，即第一IAB节点。
图27是本申请实施例13的通信系统的又一示意图。如图27所示，通信系统2700包括第一网络设备2701、第二网络设备2702、第三网络设备2703以及终端设备2704，第三网络设备2703作为中继节点，即第一IAB节点，终端设备2704经过第三网络设备2703而与第一网络设备2701或第二网络设备2702连接。
又例如，该通信系统包括第一网络设备、第二网络设备、第三网络设备、第四网络设备以及终端设备，该第一网络设备是根据实施例11所述的网络设备，该第二网络设备是根据实施例12所述的网络设备，该第三网络设备是根据实施例10所述的网络设备。也就是说，第三网络设备作为中继节点，即第一IAB节点，该第四网络设备是第一IAB节点的子节点。该终端设备是第一IAB节点的子节点服务的终端设备，或者，该终端设备是第一IAB节点服务的终端设备。
图28是本申请实施例13的通信系统的又一示意图。如图28所示，通信系统2800包括第一网络设备2801、第二网络设备2802、第三网络设备2803、第四网络设备2804以及终端设备2805，第三网络设备2803作为中继节点，即第一IAB节点，第四网络设备2804是第三网络设备2803即第一IAB节点的子IAB节点，终端设备2805是第四网络设备2804即第一IAB节点的子IAB节点服务的终端设备。
图29是本申请实施例13的通信系统的又一示意图。如图29所示，通信系统2900包括第一网络设备2901、第二网络设备2902、第三网络设备2903、第四网络设备2904以及终端设备2905，第三网络设备2903作为中继节点，即第一IAB节点，第四网络设备2904是第三网络设备2903即第一IAB节点的子IAB节点，终端设备2905是第第三网络设备2903即第一IAB节点服务的终端设备。
又例如，该通信系统包括第一网络设备、第三网络设备以及终端设备，该第一网络设备是根据实施例11或12所述的网络设备，该第三网络设备是根据实施例10所述的网络设备。也就是说，第三网络设备作为中继节点，即第一IAB节点。
图30是本申请实施例13的通信系统的又一示意图。如图30所示，通信系统3000包括第一网络设备3001、第三网络设备3002以及终端设备3003，第三网络设备3002作为中继节点，即第一IAB节点，第一网络设备3001是第一IAB节点的源IAB宿主节点或目标IAB宿主节点。
又例如，该通信系统包括第一网络设备、第三网络设备、第四网络设备以及终端设备，该第一网络设备是根据实施例11或12所述的网络设备，该第三网络设备是根据实施例10所述的网络设备。也就是说，第三网络设备作为中继节点，即第一IAB节点，该第四网络设备是第一IAB节点的子节点。该终端设备是第一IAB节点的子节点服务的终端设备，或者，该终端设备是第一IAB节点服务的终端设备。
图31是本申请实施例13的通信系统的又一示意图。如图31所示，通信系统3100包括第一网络设备3101、第三网络设备3102、第四网络设备3103终端设备3104，第三网络设备3102作为中继节点，即第一IAB节点，第四网络设备3103是第三网络设备3102即第一IAB节点的子IAB节点，终端设备3104是第四网络设备3103即第一IAB节点的子IAB节点服务的终端设备。
图32是本申请实施例13的通信系统的又一示意图。如图32所示，通信系统3200包括第一网络设备3201、第三网络设备3202、第四网络设备3203以及终端设备3204，第三网络设备3202作为中继节点，即第一IAB节点，第四网络设备3203是第三网络设备3202即第一IAB节点的子IAB节点，终端设备3204是第三网络设备3202即第一IAB节点服务的终端设备。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现 上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。逻辑部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图17中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图8中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图17中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本发明所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图17描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。
根据本申请实施例公开的各种实施方式，还公开了如下附记：
附记一：
1、一种IAB节点的移植装置，所述装置应用于第一IAB节点，所述装置包括：
第一接收单元，其用于接收所述第一IAB节点服务的终端设备和/或子IAB(descendant IAB)节点的RRC重配置完成消息；以及
第一发送单元，其用于通过目标路径将包含所述RRC重配置完成消息的第一上行消息发送给目标IAB(IAB-donor)宿主节点，或者，通过源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
2、根据附记1所述的装置，其中，所述第一发送单元包括：
第一存储单元，其用于存储所述RRC重配置完成消息；
第一建立单元，其用于建立所述目标路径；以及
第二发送单元，其用于通过所述目标路径将所述第一上行消息发送给目标IAB宿主节点。
3、根据附记2所述的装置，其中，所述装置还包括:
第一中断单元，其用于当满足第一条件时，中断与所述终端设备和/或所述子IAB节点的业务。
4、根据附记3所述的装置，其中，所述第一条件包括以下条件中的至少一个：
向所述第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到所述第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第一定时器超时；
所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第一配置值，和/或，所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第一比例；以及
所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈消息RRC重配置消息的反馈的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的所述第一IAB节点服务的终端设备和/或子 IAB节点的RRC重配置消息的反馈的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第二比例。
5、根据附记2所述的装置，其中，所述装置还包括：
第三发送单元，其用于当满足第二条件时，向所述源IAB宿主节点发送第一下行消息的反馈消息。
6、根据附记5所述的装置，其中，所述第二条件包括以下条件中的至少一个：
向所述第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到所述第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第二定时器超时；
所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第三配置值，和/或，所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第三比例；以及
所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈消息RRC重配置消息的反馈的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第四比例。
7、根据附记2-6中的任一项所述的装置，其中，所述装置还包括：
第二接收单元，其用于接收第一指示信息，
所述第一指示信息用于指示所述RRC重配置完成消息是使用目标IAB宿主节点配置的安全配置保护的RRC重配置完成消息，或者，指示所述RRC重配置完成消息是发送给所述目标IAB宿主节点的，或者，指示所述第一IAB节点存储所述RRC重配置完成消息。
8、根据附记7所述的装置，其中，
所述第一指示信息包括在RLC组头里，或者，包括在MAC组头里。
9、根据附记7或8所述的装置，其中，所述装置还包括：
第二存储单元，其用于所述第一IAB节点的分布单元的MAC层或RLC层或BAP层存储所述RRC重配置完成消息。
10、根据附记7或8所述的装置，其中，所述装置还包括：
第一传递单元，其用于所述第一IAB节点的分布单元的MAC层将所述第一指示信息传递给RLC层；或者，
第三存储单元，其用于当第一IAB节点IAB-DU接收到该第一指示信息时，IAB-MT的BAP层存储该RRC重配置完成消息；或者，
第四存储单元，其用于对于第一指示信息来自该第一IAB节点服务的子IAB节点的情况，IAB-DU的BAP层存储该RRC重配置完成消息；或者，
第二传递单元，其用于该第一IAB节点的IAB-DU的MAC层或RLC层将该第一指示信息传递给BAP层。
11、根据附记2-10中的任一项所述的装置，其中，所述第一发送单元还包括：
第三接收单元，其用于接收来自源父IAB(parent IAB)节点的第二RRC重配置消息；
随机接入单元，其用于根据所述第二RRC重配置消息，向所述第一IAB节点的目标父节点发起随机接入过程；以及
第一切换单元，其用于切换至目标路径。
12、根据附记2-11中的任一项所述的装置，其中，
所述目标路径是所述第一IAB节点的分布单元(DU)与所述目标IAB宿主节点的集中单元(CU)之间的F1接口。
13、根据附记1-12中的任一项所述的装置，其中，
所述第一上行消息是第一F1消息。
14、根据附记13中所述的装置，其中，
所述第一F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个。
15、根据附记14所述的装置，其中，
与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息对应的终端设备的所述RRC重配置完成消息包括在所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息中；或者，
所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息包括至少一条所述RRC重配置完成消息，对于至少一条所述RRC重配置完成消息中的一条所述RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息关联的终端设备相同或不同。
16、根据附记13所述的装置，其中，
所述第一F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
17、根据附记16所述的装置，其中，
所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
18、根据附记1-17中的任一项所述的装置，其中，所述装置还包括：
第四接收单元，其用于接收来自源IAB宿主节点的第一下行消息，
所述第一下行消息包括第一RRC重配置消息，所述第一RRC重配置消息包括所述目标IAB宿主节点配置的密钥。
19、根据附记18所述的装置，其中，
所述第一下行消息是第二F1消息。
20、根据附记18或19所述的装置，其中，
所述第一下行消息包括以下的至少一个：
第二指示信息，所述第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
第一定时器或第二定时器的值，所述第一定时器或第二定时器用于所述第一IAB节点发起与目标父IAB节点的随机接入过程、所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元建立F1接口以及所述第一IAB节点向所述源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
21、根据附记1所述的装置，其中，所述第一发送单元包括：
第四发送单元，其用于将包含所述RRC重配置完成消息的第二上行消息发送给源IAB宿主节点，
并且，所述RRC重配置完成消息由所述源IAB宿主节点发送给目标IAB宿主节点。
22、根据附记21所述的装置，其中，
所述RRC重配置完成消息由所述源IAB宿主节点通过Xn接口或NG接口将发送给目标IAB宿主节点。
23、根据附记1或21或22所述的装置，其中，
所述第二上行消息包括第三指示信息，
所述第三指示信息用于指示所述源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
24、根据附记1、21-23中的任一项所述的装置，其中，
所述第二上行消息是第三F1消息。
25、根据附记24所述的装置，其中，
所述第三F1消息是终端设备上下文建立响应消息或终端设备上下文修改响应消息中的至少一个。
26、根据附记25所述的装置，其中，
与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息对应的终端设备的所述RRC重配置完成消息包括在所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息中；或者，
所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息包括至 少一条所述RRC重配置完成消息，对于至少一条所述RRC重配置完成消息中的一条所述RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息关联的终端相同或不同。
27、根据附记24所述的装置，其中，
所述第三F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
28、根据附记27所述的装置，其中，
所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
29、根据附记1-28中的任一项所述的装置，其中，
所述RRC重配置完成消息包括第一RRC重配置完成消息以及第二RRC重配置完成消息，所述第一RRC重配置完成消息是所述第一IAB节点服务的第一终端设备和/或第一子IAB节点生成的RRC重配置完成消息，所述第二RRC重配置完成消息是所述第一IAB节点服务的第二终端设备和/或第二子IAB节点生成的RRC重配置完成消息，
所述第一IAB节点通过目标路径将包含所述第一RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，并且，所述第一IAB节点将包含所述第二RRC重配置完成消息的第二上行消息发送给源IAB宿主节点以通过所述源IAB宿主节点将所述第二RRC重配置完成消息发送给目标IAB宿主节点。
30、一种IAB节点的移植装置，所述装置应用于第一IAB宿主节点，所述第一IAB宿主节点是第一IAB节点的源IAB宿主节点，
所述装置包括：
第五接收单元，其用于接收来自第一IAB节点的第二上行消息，所述第二上行消息包括所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
第五发送单元，其用于将所述RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
31、根据附记30所述的装置，其中，
所述第五发送单元通过Xn接口或NG接口将包括所述RRC重配置完成消息的Xn消息或NG消息发送给目标IAB宿主节点。
32、根据附记30或31所述的装置，其中，
所述第二上行消息包括第三指示信息，
所述第三指示信息用于指示所述源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
33、根据附记30-32中的任一项所述的装置，其中，
所述第二上行消息是第三F1消息。
34、根据附记30-33中的任一项所述的装置，其中，
所述第三F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个，或者，
所述第三F1消息是上行RRC消息传递消息。
35、根据附记34所述的装置，其中，
与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息对应的终端设备的所述RRC重配置完成消息包括在所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息中；或者，
所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息包括至少一条所述RRC重配置完成消息，对于至少一条所述RRC重配置完成消息中的一条所述RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息关联的终端相同或不同。
36、根据附记34所述的装置，其中，
所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息 中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
37、根据附记30-36中的任一项所述的装置，其中，所述装置还包括：
第六发送单元，其用于向所述第一IAB节点发送第一下行消息，所述第一下行消息包括第一RRC重配置消息。
38、根据附记39所述的装置，其中，
所述第二上行消息也作为所述第一下行消息的反馈消息；或者，
所述装置还包括：第六接收单元，其用于接收所述第一下行消息的反馈消息。
39、一种IAB节点的移植装置，所述装置应用于第一IAB宿主节点，所述第一IAB宿主节点是第一IAB节点的源IAB宿主节点，
所述装置包括：
第七接收单元，其用于接收来自所述第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及
第七发送单元，其用于向所述第一IAB节点的源父IAB节点发送第二下行消息，所述第二下行消息包括第二RRC重配置消息。
40、根据附记39所述的装置，其中，
当所述第一IAB宿主节点接收来自所述第一IAB节点的第一RRC重配置消息的反馈时，向所述第一IAB节点的源父IAB节点发送第二下行消息，所述第二下行消息包括第二RRC重配置消息。
41、根据附记39或40所述的装置，其中，所述装置还包括：
第八发送单元，其用于向所述第一IAB节点发送所述第一下行消息，所述第一下行消息包括所述第一RRC重配置消息。
42、根据附记39-41中的任一项所述的装置，其中，
所述第一RRC重配置消息包括所述第一IAB节点的目标IAB宿主节点配置的密钥。
43、根据附记39-42中的任一项所述的装置，其中，
所述第一下行消息是第二F1消息。
44、根据附记39-42中的任一项所述的装置，其中，
所述第一下行消息包括以下的至少一个：
第二指示信息，所述第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
第一定时器或第二定时器的值，所述第一定时器或第二定时器用于所述第一IAB节点发起与目标父IAB节点的随机接入过程、所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元建立F1接口以及所述第一IAB节点向所述源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
45、一种IAB节点的移植装置，所述装置应用于第二IAB宿主节点，所述第二IAB宿主节点是第一IAB节点的目标IAB宿主节点，
所述装置包括：
第八接收单元，其用于接收所述第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，
第九接收单元，其用于接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，
所述RRC重配置完成消息是所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
46、根据附记45所述的装置，其中，
所述目标路径是所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元之间的F1接口。
47、根据附记45所述的装置，其中，
来自源IAB宿主节点的所述RRC重配置完成消息通过Xn接口或NG接口发送。
48、一种网络设备，所述网络设备包括根据附记1-47中的任一项所述的装置。
49、一种通信系统，所述通信系统包括第一网络设备、第二网络设备以及终端设 备，
所述第一网络设备包括根据附记30-44中的任一项所述的装置，
所述第二网络设备包括根据附记45-27中的任一项所述的装置。
50、一种通信系统，所述通信系统包括第一网络设备以及终端设备，
所述第一网络设备包括根据附记30-44中的任一项所述的装置，或者，所述第一网络设备包括根据附记45-27中的任一项所述的装置
51、一种通信系统，所述通信系统包括第一网络设备、第二网络设备、第三网络设备以及终端设备，
所述第一网络设备包括根据附记30-44中的任一项所述的装置，
所述第二网络设备包括根据附记45-27中的任一项所述的装置，
所述第三网络设备包括根据附记1-29中的任一项所述的装置。
52、一种通信系统，所述通信系统包括第一网络设备、第二网络设备、第三网络设备、第四网络设备以及终端设备，
所述第一网络设备包括根据附记30-44中的任一项所述的装置，
所述第二网络设备包括根据附记45-27中的任一项所述的装置，
所述第三网络设备包括根据附记1-29中的任一项所述的装置，
所述第四网络设备是第一IAB节点的子节点。
53、根据附记52所述的通信系统，其中，
所述终端设备是第一IAB节点服务的终端设备，或者，
所述终端设备是第一IAB节点的子IAB节点服务的终端设备。
附记二：
1、一种IAB节点的移植方法，所述方法应用于第一IAB节点，所述方法包括：
接收所述第一IAB节点服务的终端设备和/或子IAB(descendant IAB)节点的RRC重配置完成消息；以及
通过目标路径将包含所述RRC重配置完成消息的第一上行消息发送给目标IAB(IAB-donor)宿主节点，或者，通过源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
2、根据附记1所述的方法，其中，所述通过目标路径将包含所述RRC重配置完 成消息的第一上行消息发送给目标IAB宿主节点，包括：
存储所述RRC重配置完成消息；
建立所述目标路径；以及
通过所述目标路径将所述第一上行消息发送给目标IAB宿主节点。
3、根据附记2所述的方法，其中，所述方法还包括:
当满足第一条件时，中断与所述终端设备和/或所述子IAB节点的业务。
4、根据附记3所述的方法，其中，所述第一条件包括以下条件中的至少一个：
向所述第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到所述第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
第一定时器超时；
所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第一配置值，和/或，所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第一比例；以及
所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈消息RRC重配置消息的反馈的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第二比例。
5、根据附记2所述的方法，其中，所述方法还包括：
当满足第二条件时，向所述源IAB宿主节点发送第一下行消息的反馈消息。
6、根据附记5所述的方法，其中，所述第二条件包括以下条件中的至少一个：
向所述第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到所述第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置 完成消息；
第二定时器超时；
所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第三配置值，和/或，所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第三比例；以及
所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈消息RRC重配置消息的反馈的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第四比例。
7、根据附记2-6中的任一项所述的方法，其中，所述方法还包括：
接收第一指示信息，
所述第一指示信息用于指示所述RRC重配置完成消息是使用目标IAB宿主节点配置的安全配置保护的RRC重配置完成消息，或者，指示所述RRC重配置完成消息是发送给所述目标IAB宿主节点的，或者，指示所述第一IAB节点存储所述RRC重配置完成消息。
8、根据附记7所述的方法，其中，
所述第一指示信息包括在RLC组头里，或者，包括在MAC组头里。
9、根据附记7或8所述的方法，其中，所述方法还包括：
所述第一IAB节点的分布单元的MAC层或RLC层或BAP层存储所述RRC重配置完成消息。
10、根据附记7或8所述的方法，其中，所述方法还包括：
所述第一IAB节点的分布单元的MAC层将所述第一指示信息传递给RLC层；或者，
当第一IAB节点IAB-DU接收到该第一指示信息时，IAB-MT的BAP层存储该RRC重配置完成消息；或者，
对于第一指示信息来自该第一IAB节点服务的子IAB节点的情况，IAB-DU的BAP层存储该RRC重配置完成消息；或者，
该第一IAB节点的IAB-DU的MAC层或RLC层将该第一指示信息传递给BAP层。
11、根据附记2-10中的任一项所述的方法，其中，所述通过目标路径将包含所述RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，还包括：
接收来自源父IAB(parent IAB)节点的第二RRC重配置消息；
根据所述第二RRC重配置消息，向所述第一IAB节点的目标父节点发起随机接入过程；以及
切换至目标路径。
12、根据附记2-11中的任一项所述的方法，其中，
所述目标路径是所述第一IAB节点的分布单元(DU)与所述目标IAB宿主节点的集中单元(CU)之间的F1接口。
13、根据附记1-12中的任一项所述的方法，其中，
所述第一上行消息是第一F1消息。
14、根据附记13中所述的方法，其中，
所述第一F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个。
15、根据附记14所述的方法，其中，
与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息对应的终端设备的所述RRC重配置完成消息包括在所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息中；或者，
所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息包括至少一条所述RRC重配置完成消息，对于至少一条所述RRC重配置完成消息中的一条所述RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息关联的终端设备相同或不同。
16、根据附记13所述的方法，其中，
所述第一F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
17、根据附记16所述的方法，其中，
所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
18、根据附记1-17中的任一项所述的方法，其中，所述方法还包括：
接收来自源IAB宿主节点的第一下行消息，
所述第一下行消息包括第一RRC重配置消息，所述第一RRC重配置消息包括所述目标IAB宿主节点配置的密钥。
19、根据附记18所述的方法，其中，
所述第一下行消息是第二F1消息。
20、根据附记18或19所述的方法，其中，
所述第一下行消息包括以下的至少一个：
第二指示信息，所述第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
第一定时器或第二定时器的值，所述第一定时器或第二定时器用于所述第一IAB节点发起与目标父IAB节点的随机接入过程、所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元建立F1接口以及所述第一IAB节点向所述源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
21、根据附记1所述的方法，其中，所述第一IAB节点通过源IAB宿主节点将 所述RRC重配置完成消息发送给目标IAB宿主节点，包括：
所述第一IAB节点将包含所述RRC重配置完成消息的第二上行消息发送给源IAB宿主节点；
并且，所述RRC重配置完成消息由所述源IAB宿主节点发送给目标IAB宿主节点。
22、根据附记21所述的方法，其中，
所述RRC重配置完成消息由所述源IAB宿主节点通过Xn接口或NG接口发送给目标IAB宿主节点。
23、根据附记1或21或22所述的方法，其中，
所述第二上行消息包括第三指示信息，
所述第三指示信息用于指示所述源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
24、根据附记1、21-23中的任一项所述的方法，其中，
所述第二上行消息是第三F1消息。
25、根据附记24所述的方法，其中，
所述第三F1消息是终端设备上下文建立响应消息或终端设备上下文修改响应消息中的至少一个。
26、根据附记25所述的方法，其中，
与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息对应的终端设备的所述RRC重配置完成消息包括在所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息中；或者，
所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息包括至少一条所述RRC重配置完成消息，对于至少一条所述RRC重配置完成消息中的一条所述RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息关联的终端相同或不同。
27、根据附记24所述的方法，其中，
所述第三F1消息是上行RRC消息传递(UL RRC Message Transfer)消息。
28、根据附记27所述的方法，其中，
所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
29、根据附记1-28中的任一项所述的方法，其中，
所述RRC重配置完成消息包括第一RRC重配置完成消息以及第二RRC重配置完成消息，所述第一RRC重配置完成消息是所述第一IAB节点服务的第一终端设备和/或第一子IAB节点生成的RRC重配置完成消息，所述第二RRC重配置完成消息是所述第一IAB节点服务的第二终端设备和/或第二子IAB节点生成的RRC重配置完成消息，
所述第一IAB节点通过目标路径将包含所述第一RRC重配置完成消息的第一上行消息发送给目标IAB宿主节点，并且，所述第一IAB节点将包含所述第二RRC重配置完成消息的第二上行消息发送给源IAB宿主节点以通过所述源IAB宿主节点将所述第二RRC重配置完成消息发送给目标IAB宿主节点。
30、一种IAB节点的移植方法，所述方法应用于第一IAB宿主节点，所述第一IAB宿主节点是第一IAB节点的源IAB宿主节点，
所述方法包括：
接收来自第一IAB节点的第二上行消息，所述第二上行消息包括所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
将所述RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
31、根据附记30所述的方法，其中，所述将所述RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点，包括：
通过Xn接口或NG接口将所述RRC重配置完成消息发送给目标IAB宿主节点。
32、根据附记30或31所述的方法，其中，
所述第二上行消息包括第三指示信息，
所述第三指示信息用于指示所述源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
33、根据附记30-32中的任一项所述的方法，其中，
所述第二上行消息是第三F1消息。
34、根据附记30-33中的任一项所述的方法，其中，
所述第三F1消息是终端设备上下文建立响应消息和终端设备上下文修改响应消息中的至少一个，或者，
所述第三F1消息是上行RRC消息传递消息。
35、根据附记34所述的方法，其中，
与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息对应的终端设备的所述RRC重配置完成消息包括在所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息中；或者，
所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息包括至少一条所述RRC重配置完成消息，对于至少一条所述RRC重配置完成消息中的一条所述RRC重配置完成消息，发送这条RRC重配置完成消息的终端设备与所述终端设备上下文建立响应消息或所述终端设备上下文修改响应消息关联的终端相同或不同。
36、根据附记34所述的方法，其中，
所有的RRC重配置完成消息包括在一条上行RRC消息传递消息中；或者，
所有由终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，所有由IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，由另外一个IAB节点服务的终端设备或IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中；或者，
由一个IAB节点服务的终端设备发送的RRC重配置完成消息包括在一条上行RRC消息传递消息中，并且由这个IAB节点服务的IAB子节点发送的RRC重配置完成消息包括在一条不同的上行RRC消息传递消息中。
37、根据附记30-36中的任一项所述的方法，其中，所述方法还包括：
向所述第一IAB节点发送第一下行消息，所述第一下行消息包括第一RRC重配置消息。
38、根据附记39所述的方法，其中，
所述第二上行消息也作为所述第一下行消息的反馈消息；或者，
所述方法还包括：接收所述第一下行消息的反馈消息。
39、一种IAB节点的移植方法，所述方法应用于第一IAB宿主节点，所述第一IAB宿主节点是第一IAB节点的源IAB宿主节点，
所述方法包括：
接收来自所述第一IAB节点的包括第一RRC重配置消息的第一下行消息的反馈消息；以及
向所述第一IAB节点的源父IAB节点发送第二下行消息，所述第二下行消息包括第二RRC重配置消息。
40、根据附记39所述的方法，其中，
当所述第一IAB宿主节点接收来自所述第一IAB节点的第一RRC重配置消息的反馈时，向所述第一IAB节点的源父IAB节点发送第二下行消息，所述第二下行消息包括第二RRC重配置消息。
41、根据附记39或40所述的方法，其中，所述方法还包括：
向所述第一IAB节点发送所述第一下行消息，所述第一下行消息包括所述第一RRC重配置消息。
42、根据附记39-41中的任一项所述的方法，其中，
所述第一RRC重配置消息包括所述第一IAB节点的目标IAB宿主节点配置的密钥。
43、根据附记39-42中的任一项所述的方法，其中，
所述第一下行消息是第二F1消息。
44、根据附记39-42中的任一项所述的方法，其中，
所述第一下行消息包括以下的至少一个：
第二指示信息，所述第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
第一定时器或第二定时器的值，所述第一定时器或第二定时器用于所述第一IAB 节点发起与目标父IAB节点的随机接入过程、所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元建立F1接口以及所述第一IAB节点向所述源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
45、一种IAB节点的移植方法，所述方法应用于第二IAB宿主节点，所述第二IAB宿主节点是第一IAB节点的目标IAB宿主节点，
所述方法包括：
接收所述第一IAB节点通过目标路径发送的包括RRC重配置完成消息的第一上行消息；和/或，
接收来自源IAB宿主节点的包括RRC重配置完成消息的Xn消息或NG消息，
所述RRC重配置完成消息是所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息。
46、根据附记45所述的方法，其中，
所述目标路径是所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元之间的F1接口。
47、根据附记45所述的方法，其中，
来自源IAB宿主节点的所述RRC重配置完成消息通过Xn接口或NG接口发送。

Claims (20)

  1. 一种IAB节点的移植装置，所述装置应用于第一IAB节点，所述装置包括：
    第一接收单元，其用于接收所述第一IAB节点服务的终端设备和/或子IAB(descendant IAB)节点的RRC重配置完成消息；以及
    第一发送单元，其用于通过目标路径将包含所述RRC重配置完成消息的第一上行消息发送给目标IAB(IAB-donor)宿主节点，或者，通过源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
  2. 根据权利要求1所述的装置，其中，所述第一发送单元包括：
    第一存储单元，其用于存储所述RRC重配置完成消息；
    第一建立单元，其用于建立所述目标路径；以及
    第二发送单元，其用于通过所述目标路径将所述第一上行消息发送给目标IAB宿主节点。
  3. 根据权利要求2所述的装置，其中，所述装置还包括:
    第一中断单元，其用于当满足第一条件时，中断与所述终端设备和/或所述子IAB节点的业务。
  4. 根据权利要求3所述的装置，其中，所述第一条件包括以下条件中的至少一个：
    向所述第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到所述第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
    第一定时器超时；
    所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第一配置值，和/或，所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第一比例；以及
    所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的 RRC重配置消息的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈消息RRC重配置消息的反馈的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第二配置值，和/或，所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第二比例。
  5. 根据权利要求2所述的装置，其中，所述装置还包括：
    第三发送单元，其用于当满足第二条件时，向所述源IAB宿主节点发送第一下行消息的反馈消息。
  6. 根据权利要求5所述的装置，其中，所述第二条件包括以下条件中的至少一个：
    向所述第一IAB节点服务的所有终端设备和/或子IAB节点发送了RRC重配置消息或收到所述第一IAB节点服务的所有终端设备和/或子IAB节点的RRC重配置完成消息；
    第二定时器超时；
    所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的数量达到第三配置值，和/或，所述第一IAB节点向其发送RRC重配置消息或收到其发送的RRC重配置消息的反馈消息RRC重配置消息的反馈或收到其发送的RRC重配置完成消息的终端设备和/或子IAB节点的比例达到第三比例；以及
    所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈消息RRC重配置消息的反馈的数量或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的数量达到第四配置值，和/或，所述第一IAB节点向所述第一IAB节点服务的终端设备和/或子IAB节点发送的RRC重配置消息的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置消息的反馈的比例或收到的所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息的比例达到第四比例。
  7. 根据权利要求2所述的装置，其中，所述装置还包括：
    第二接收单元，其用于接收第一指示信息，
    所述第一指示信息用于指示所述RRC重配置完成消息是使用目标IAB宿主节点配置的安全配置保护的RRC重配置完成消息，或者，指示所述RRC重配置完成消息是发送给所述目标IAB宿主节点的，或者，指示所述第一IAB节点存储所述RRC重配置完成消息。
  8. 根据权利要求7所述的装置，其中，
    所述第一指示信息包括在RLC组头里，或者，包括在MAC组头里。
  9. 根据权利要求7所述的装置，其中，所述装置还包括：
    第二存储单元，其用于所述第一IAB节点的分布单元的MAC层或RLC层或BAP层存储所述RRC重配置完成消息。
  10. 根据权利要求2所述的装置，其中，
    所述目标路径是所述第一IAB节点的分布单元(DU)与所述目标IAB宿主节点的集中单元(CU)之间的F1接口。
  11. 根据权利要求1所述的装置，其中，所述装置还包括：
    第四接收单元，其用于接收来自源IAB宿主节点的第一下行消息，
    所述第一下行消息包括第一RRC重配置消息，所述第一RRC重配置消息包括所述目标IAB宿主节点配置的密钥。
  12. 根据权利要求11所述的装置，其中，
    所述第一下行消息包括以下的至少一个：
    第二指示信息，所述第二指示信息用于指示将要进行跨CU的IAB节点的移植，或者，指示为了跨CU的IAB节点的移植而进行的终端设备配置；
    第一定时器或第二定时器的值，所述第一定时器或第二定时器用于所述第一IAB节点发起与目标父IAB节点的随机接入过程、所述第一IAB节点的分布单元与所述目标IAB宿主节点的集中单元建立F1接口以及所述第一IAB节点向所述源IAB宿主节点发送第一RRC重配置消息的反馈中的至少一个；以及
    终端设备、子IAB节点、消息以及反馈中的至少一个的数量和/或比例。
  13. 根据权利要求1所述的装置，其中，所述第一发送单元包括：
    第四发送单元，其用于将包含所述RRC重配置完成消息的第二上行消息发送给 源IAB宿主节点，
    并且，所述RRC重配置完成消息由所述源IAB宿主节点发送给目标IAB宿主节点。
  14. 根据权利要求13所述的装置，其中，
    所述RRC重配置完成消息由所述源IAB宿主节点通过Xn接口或NG接口发送给目标IAB宿主节点。
  15. 根据权利要求13所述的装置，其中，
    所述第二上行消息包括第三指示信息，
    所述第三指示信息用于指示所述源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
  16. 一种IAB节点的移植装置，所述装置应用于第一IAB宿主节点，所述第一IAB宿主节点是第一IAB节点的源IAB宿主节点，
    所述装置包括：
    第五接收单元，其用于接收来自第一IAB节点的第二上行消息，所述第二上行消息包括所述第一IAB节点服务的终端设备和/或子IAB节点的RRC重配置完成消息；以及
    第五发送单元，其用于将所述RRC重配置完成消息发送给第一IAB节点的目标IAB宿主节点。
  17. 根据权利要求16所述的装置，其中，
    所述第五发送单元通过Xn接口或NG接口将包括所述RRC重配置完成消息的Xn消息或NG消息发送给目标IAB宿主节点。
  18. 根据权利要求16所述的装置，其中，
    所述第二上行消息包括第三指示信息，
    所述第三指示信息用于指示所述源IAB宿主节点将所述RRC重配置完成消息发送给目标IAB宿主节点。
  19. 一种IAB节点的移植装置，所述装置应用于第一IAB宿主节点，所述第一IAB宿主节点是第一IAB节点的源IAB宿主节点，
    所述装置包括：
    第七接收单元，其用于接收来自所述第一IAB节点的包括第一RRC重配置消息 的第一下行消息的反馈消息；以及
    第七发送单元，其用于向所述第一IAB节点的源父IAB节点发送第二下行消息，所述第二下行消息包括第二RRC重配置消息。
  20. 根据权利要求19所述的装置，其中，
    当所述第一IAB宿主节点接收来自所述第一IAB节点的第一RRC重配置消息的反馈时，向所述第一IAB节点的源父IAB节点发送第二下行消息，所述第二下行消息包括第二RRC重配置消息。
PCT/CN2020/122610 2020-10-21 2020-10-21 Iab节点的移植方法及装置 Ceased WO2022082543A1 (zh)

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