WO2021196171A1 - 网络切片切换的方法、装置及其设备 - Google Patents
网络切片切换的方法、装置及其设备 Download PDFInfo
- Publication number
- WO2021196171A1 WO2021196171A1 PCT/CN2020/083253 CN2020083253W WO2021196171A1 WO 2021196171 A1 WO2021196171 A1 WO 2021196171A1 CN 2020083253 W CN2020083253 W CN 2020083253W WO 2021196171 A1 WO2021196171 A1 WO 2021196171A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base station
- slice
- target base
- pdu session
- supported
- 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
Links
Images
Classifications
-
- 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
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
Definitions
- This application relates to the field of communication technology, and in particular to a method and device for network slicing switching.
- the existing switching process configures the source base station with UE (User Equipment, terminal equipment) for measurement reporting, and sends a switching request message to the target base station based on the report result of the UE (Handover request).
- the handover request message will carry PDU session (Packet Data Unit session, packet data unit session) related information.
- the target base station performs access control.
- the target base station will reject the PDU session.
- the target base station when the target base station does not support a slice that the source base station wants to switch, the target base station will reject the PDU session corresponding to this slice. There is a technical problem of discontinuity of services during slice switching. .
- This application provides a method, device and equipment for solving the technical problem of service discontinuity that occurs during slice switching.
- the target base station receives the handover request message sent by the source base station;
- the target base station determines whether to perform slice remapping.
- the specific implementation manners of the present application adopt a method for network slicing handover, which is applied to the source base station, and includes:
- the source base station sends a handover request message to the target base station; where the handover request message is used when the target base station receives the handover request message, the target base station determines whether to perform slice remapping;
- the source base station receives the positive confirmation of the handover request message fed back by the target base station.
- the positive confirmation of the handover request message includes the new packet data unit PDU session information and/or informs the user plane corresponding to the new PDU session to carry the data forwarding channel of the DRB.
- a device for network slicing switching including:
- the receiving module is used for the target base station to receive the handover request message sent by the source base station;
- the determining module is used for the target base station to determine whether to perform slice remapping.
- a specific implementation manner of this application provides a device for network slicing switching, including:
- the sending module is used for the source base station to send a handover request message to the target base station; wherein the handover request message is used for the target base station to determine whether to perform slice remapping when the target base station receives the handover request message;
- the receiving module is used for the source base station to receive the positive confirmation of the handover request message fed back by the target base station.
- the positive confirmation of the handover request message includes the new packet data unit PDU session information, and/or informs the user plane corresponding to the new PDU session to forward DRB data aisle.
- the network device includes a processor, a memory, and a transmission program that can be run on the processor is stored in the memory.
- a transmission program that can be run on the processor is stored in the memory.
- specific embodiments of the present application provide a computer-readable storage medium that stores a computer program, where any one of the above-mentioned network slice switching methods is implemented when the computer program is executed.
- a seventh aspect specific implementations of the present application provide a computer program product, the computer program product is stored in a non-transitory computer-readable storage medium, and the computer program is executed to implement any one of the above-mentioned network slice switching methods.
- specific embodiments of the present application provide a chip, which includes a processor, configured to call and run a computer program from a memory, and a device installed with the chip executes any one of the foregoing network slice switching methods.
- a specific implementation manner of the present application provides a computer program, which implements any one of the foregoing network slice switching methods when the computer program is executed.
- the target base station receives the handover request message sent by the source base station, and the target base station determines whether to perform slice remapping. Therefore, when the target base station receives the handover request message sent by the source base station, the target base station determines whether to perform slice remapping, and performs slice remapping through the target base station, which ensures the continuity of the handover service during the slice handover, and solves the problem that occurs during the slice handover.
- Technical problems of business discontinuity are described by the target base station.
- FIG. 1 is a network architecture diagram of a communication system that may be applied in the specific embodiments of this application;
- FIG. 2 is a flowchart of a method for network slicing switching according to the first embodiment of the present application
- Fig. 3 is a signaling interaction diagram of a method for network slice handover according to the first embodiment of the present application
- FIG. 4 is a block diagram of a device for network slicing switching provided in the second embodiment of the present application.
- FIG. 5 is a block diagram of a network slicing switching device provided in Embodiment 3 of the present application.
- FIG. 6 is a schematic diagram of the hardware structure of a device for network slice switching provided in the fourth embodiment of the application.
- Figure 1 is a system architecture of a communication system that may be applied in the following specific implementations of this application.
- the system architecture includes: base station A, base station B, and terminal equipment C.
- RAN Radio Access Network
- Release 17 introduces the access network to enhance the slice.
- the RAN side defines an S-NSSAI for each slice, that is, single network slice selection assistance information (Single Network Slice Selection Assistance Information).
- the UE side maintains an NSSAI, which is an S-NSSAI list, and the UE side can support up to 8 S-NSSAIs.
- S-NSSAI is composed of SST (Slice/Service Type) and SD (Slice Differentiator).
- SST stands for service type
- SD stands for different UE groups served under the same SST.
- the example communication system can be Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband Code Division Multiple) Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex (TDD) system, advanced long term evolution (LTE-A) system, New Radio (NR) system, evolution system of NR system, LTE (LTE-based access) on unlicensed frequency bands to unlicensed spectrum, LTE-U) system, NR system (New Radio based access to unlicensed spectrum, NR-U) on unlicensed frequency band, Universal Mobile Telecommunication System (UMTS), Global Interconnected Microwave Access ( Worldwide Interoperability for Microwave Access (WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (Wireless Fidelity, WiFi), next-generation communication systems or other communication systems, etc.
- GSM Global
- This example communication system specifically includes a network device and a terminal.
- the terminal accesses the mobile communication network provided by the network device
- the terminal and the network device can be connected through a wireless link.
- the communication connection mode can be a single connection mode or a dual connection mode. Or multi-connection mode, but when the communication connection mode is single connection mode, the network equipment can be LTE base station or NR base station (also known as gNB base station), when the communication mode is dual connection mode (specifically, it can be realized by carrier aggregation CA technology, Or multiple network devices).
- the terminals involved in the specific embodiments of this application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal device), etc.
- UE User Equipment
- MS Mobile Station
- terminal device terminal device
- system and “network” in this article are often used interchangeably in this article.
- the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
- the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
- B corresponding to A means that B is associated with A, and B can be determined according to A.
- determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
- Fig. 2 is a flowchart of a method for network slice handover according to the first embodiment of the present application. As shown in Figure 2, the method for network slice handover is applied to the target base station and may include the following steps:
- Step 130 The target base station receives the handover request message sent by the source base station.
- Step 150 The target base station determines whether to perform slice remapping.
- the handover request message (handover request) is used to instruct the target base station to perform slice switching.
- the target base station receives the handover request message sent by the source base station, the target base station determines whether to perform slice remap, and determines the slice remap.
- the method can perform admission control (admission control) for the target base station.
- slice remapping can also be slice rollback.
- this step 150 may include the following steps:
- step 1511 according to the first slice information, the target base station determines whether to perform slice remapping.
- this step 1511 may include the following steps:
- the target base station determines to perform slice remapping; wherein, the first condition is used for the target base station to determine whether to perform slice remapping; the first condition is that the target base station determines according to the first slice information.
- this step 1511 may include the following steps:
- the target base station determines to perform slice remapping.
- the method of obtaining the first slice information is: obtaining from OAM (Orbital Angular Momentum), and/or obtaining from AMF (Access and Mobility Management Function, access and mobility management entity), and/or from neighboring Obtained by the base station.
- OAM Organic Angular Momentum
- AMF Access and Mobility Management Function, access and mobility management entity
- the target base station determines to perform slice remapping.
- the first slice information includes at least one of the following:
- the group to which the slice corresponding to the original PDU session belongs (the same group of slices can be remapped to each other);
- the first condition includes at least one of the following:
- the target base station has slicing support capabilities, and the slicing support capabilities include remap capabilities;
- the target base station does not support the slice corresponding to the PDU session requested by the source base station, but the target base station supports the default slice;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is the same as the slice service type (SST) field of the slice supported by the target base station, but the slice differentiation (SD) is different;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice are the same;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice belong to the same service group;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but belongs to the same slice group;
- PDU sessions and/or slices that need to be switched have requirements and/or instructions for switching service continuity
- the PDU sessions and/or slices that need to be switched but the target does not support are priority guaranteed services and/or slices.
- the method for network slice switching may further include the following steps:
- Step 170 Perform slice remapping.
- this step 170 may include the following steps:
- mapping relationship between the original PDU session and the user plane bearer DRB (user) Data Radio Bearer, user plane bearer) is modified to the mapping relationship between the new PDU session and the DRB.
- FIG. 3 is a signaling interaction diagram of a method for network slice handover according to the first embodiment of the present application.
- modifying the mapping relationship between the original PDU session and the user plane bearer DRB to the mapping relationship between the new PDU session and the DRB may include at least one of the following steps:
- Step 1701 The target base station sends an acknowledgement ACK (Acknowledge) of the handover request message to the source base station.
- the ACK includes the new PDU session information, and/or notifies the data forwarding tunnel of the DRB corresponding to the PDU session that needs to be remapped.
- the new PDU session information includes at least one of the following: remapping indication; the original PDU session identifier; the slice corresponding to the original PDU session; the slice corresponding to the new PDU session; the new PDU session identifier; the mapping relationship between the original PDU session and the DRB; new The mapping relationship between the PDU session and the DRB.
- the corresponding PDU session that needs to be remapped can be the data forwarding channel of the DRB corresponding to the new PDU session;
- Step 1702 The source base station forwards the data corresponding to the original PDU session to the target base station through the data forwarding channel, and sends a handover command (HO command) to the terminal device requesting the handover;
- HO command handover command
- Step 1703 The target base station sends a path switch request message to the access and mobility management entity AMF (Access and Mobility Management Function).
- the path switch request message is an N2 path switch request message (N2 Path Switch Request).
- the path switch request message may Including: a list of remapped PDU sessions (List of PDU Sessions Remapped with a Remapped Cause per PDU Session) containing the reason for remapping each PDU session, where the cause includes slice remapping, and the list information (List) includes: PDU session identifier and/or new PDU session identifier;
- Step 1704 the AMF sends a slice management function update session management context request (Nsmf_PDUSession_UpdateSMContext Request) to the session management entity SMF (Session management Function), and the slice management function update session management context request includes the PDU session remapped list (PDU session Remapped with a remapped Cause) ), at least one of PDU Session Is To Be Remapped and Remapped Cause;
- Step 1705 SMF triggers a PDU session modification and/or establishment process to modify an existing PDU session and/or add a new PDU session.
- the SMF can notify the terminal device UE to establish a new PDU session;
- Step 1706 the SMF sends a session modification request to the user plane entity UPF (User plane function), the session modification request is an N4 session modification request (N4 Session Modification Request), which triggers an end marker (end marker);
- UPF User plane function
- N4 Session Modification Request N4 Session Modification Request
- Step 1707 UPF sends a session modification response to SMF, and the session modification response is N4 Session Modification Response (N4 Session Modification Response);
- Step 1708 UPF sends an end mark to the source base station
- Step 1709 The SMF sends a slice management function update session management context response (Nsmf_PDUSession_UpdateSMContext Response) to the AMF, which is used to indicate the success of the remapping of the PDU session list (list of PDU Session). Further, a list of sessions whose remapping is successful can be indicated;
- Nsmf_PDUSession_UpdateSMContext Response a slice management function update session management context response
- Step 1710 The AMF sends a path switch request message affirmative confirmation to the target base station.
- the path switch request message is definitely confirmed as the N2 path switch request message affirmative confirmation (N2 path switch request message affirmative confirmation), and the path switch request message positive confirmation includes the remapping session.
- List (remaped PDU session list);
- Step 1711 After the handover is successful, the target base station sends Release Resources to the source base station.
- the method of network slicing switching can also include the following steps:
- Step 110 The source base station determines whether to send a handover request message to the target base station.
- Step 110 includes:
- Step 1111 According to the second slice information, the source base station determines whether to send a handover request message to the target base station.
- this step 1111 includes: the source base station determines whether the second condition is satisfied according to the second slice information, and the source base station determines whether to send a handover request message to the target base station.
- this step 1111 includes: when the second condition is met, the source base station sends a handover request message to the target base station; where the second condition is used to determine whether the source base station sends a handover request message to the target base station; the second condition is the source base station Determined according to the second slice information.
- the second slice information includes at least one of the following:
- the second condition includes at least one of the following:
- the target base station has a slice support capability, and the slice support capability may include a remapping capability;
- the slices supported by the source base station are the same as the slices supported by the target base station, or a subset of the slices supported by the target base station;
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the slice supported by the target base station, or is a subset of the slice supported by the target base station, or the service corresponding to the slice supported by the target base station belongs to a service group;
- the service corresponding to the slice supported by the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the corresponding service of the slice supported by the target base station, or the service corresponding to the slice supported by the target base station belongs to a service group;
- the service corresponding to the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the service corresponding to the slice supported by the target base station;
- the slices supported by the source base station and the slices supported by the target base station belong to the same group
- the slice corresponding to the PDU session currently established by the terminal device at the source base station and the slice supported by the target base station belong to the same group.
- the handover request message includes: remapping information, and the remapping information includes at least one of the following:
- Remapping indication the original PDU session identifier; the slice corresponding to the original PDU session; the slice corresponding to the new PDU session; the new PDU session identifier; the mapping relationship between the original PDU session and the DRB; the mapping relationship between the new PDU session and the DRB.
- the source base station when the source base station determines that the source base station satisfies the second condition according to the second slice information, the source base station sends a handover request message to the target base station.
- the handover request message may include: remapping information, and the remapping information includes at least one of the following situations:
- Remapping indication the original PDU session identifier; the slice corresponding to the original PDU session; the slice corresponding to the new PDU session; the new PDU session identifier; the mapping relationship between the original PDU session and the DRB; the mapping relationship between the new PDU session and the DRB (you can also use QoS (Quality of Service) flow (QoS flow replaces PDU session);
- QoS Quality of Service
- the source base station can still trigger the handover request message.
- the corresponding processing is the same as legacy HO (traditional handover).
- the first method provides the judgment condition of the slice remapping, which ensures the effective realization of the slice remapping and avoids the problem of business discontinuity during the switching process of the slice service. It also adds a step of the first round of screening by the source base station, which avoids the delay and interface signaling waste caused by the target base station not supporting slicing after the handover request message is sent.
- Step 110 includes:
- Step 1121 The source base station determines the result of the handover request according to the third slice information; where the third slice information is used to determine the result of the handover request;
- Step 1123 Determine whether to send a handover request message to the target base station according to the result of the handover request. Further, the handover request message may include the result of the handover request.
- the third slice information includes at least one of the following:
- the result of the handover request message includes one of the following situations:
- the slice remapping indication may be a HO with slice remapping indication (HO with slice remapping indication);
- the non-slice remapping indication is a HO indication and/or a non-slice remapping handover indication (HO without slice remapping indication);
- the handover request message is not sent.
- the handover request message not to be sent may be a no HO.
- step 1123 determine to send a handover request message to the target base station, where the handover request message contains the result of the handover request, including:
- Step 11231 When the third condition is met, the result of the handover request is to send a handover request message, which carries a slice remapping indication; the third condition is used to determine whether the source base station sends a handover request message carrying a slice remapping indication to the target base station.
- the third condition is determined according to the third slice information.
- the source base station when the source base station satisfies the third condition, the result of the handover request is a slice remapping handover instruction, and the source base station determines that slice remapping is required.
- the source base station sends a handover request message to the target base station, and the handover request information may carry: Remapping information, the remapping information includes at least one of the following situations:
- Remapping indication the original PDU session identifier; the slice corresponding to the original PDU session; the slice corresponding to the new PDU session; the new PDU session identifier; the mapping relationship between the original PDU session and the DRB; the mapping relationship between the new PDU session and the DRB (also QoS flow replaces PDU session).
- Step 11233 When the third condition is not met, and/or the fourth condition is met, the handover request result is to send the handover request message, which does not carry a slice remapping indication, or carries a non-slice remapping indication; non-slice
- the remapping indication is used for when the target base station receives a handover request message that does not perform slice remapping, the target base station determines to perform handover but does not perform slice remapping; the fourth condition is used to determine whether the source base station sends the target base station without slice remapping Indication, or, a handover request message carrying a non-slice remapping indication.
- the third condition and/or the fourth condition are determined according to the third slice information.
- Step 11235 When the third condition is not met and/or the fourth condition is not met, the handover request result is that no handover request message is sent.
- the handover request result is a no-handover indication, that is, the source base station does not send a handover request message to the target base station:
- the target base station does not support slices; and/or the PDU sessions and/or slices that need to be switched but the target does not support are not services and/or slices that require priority guarantee; and/or the PDU sessions and/or slices that need to be switched do not have switching Business continuity requirements and/or instructions.
- the third condition and/or the fourth condition are determined according to the third slice information.
- the third condition includes at least one of the following:
- the target base station has a slice support capability, and the slice support capability may include a remapping capability;
- the slices supported by the source base station are the same as the slices supported by the target base station, or a subset of the slices supported by the target base station;
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the slice supported by the target base station, or is a subset of the slice supported by the target base station;
- the service corresponding to the slice supported by the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the corresponding service of the slice supported by the target base station;
- the service corresponding to the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the service corresponding to the slice supported by the target base station;
- the slices supported by the source base station and the slices supported by the target base station belong to the same group
- PDU sessions and/or slices that need to be switched have requirements and/or instructions for switching service continuity
- the PDU sessions and/or slices that need to be switched but the target does not support are priority guaranteed services and/or slices.
- the fourth condition includes at least one of the following:
- the target base station does not support slicing and may include slicing capabilities
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the slice supported by the target base station;
- PDU sessions and/or slices that need to be handed over but are not supported by the target are not services and/or slices that require priority guarantee;
- the PDU sessions and/or slices that need to be switched do not have requirements and/or instructions for switching service continuity.
- PDU sessions and/or slices that need to be switched but not supported by the target are not services and/or slices that need to be preferentially guaranteed, and/or PDU sessions and/or slices that need to be switched do not have the requirement of switching service continuity and / Or instructions, also including:
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is different from the slice supported by the target base station; and/or,
- the service corresponding to the slice corresponding to the PDU session currently established by the terminal device at the source base station is different from the service corresponding to the slice supported by the target base station.
- the second method provides the judgment conditions, specific procedures and details of the slice remapping, which ensures the effective realization of the slice remapping and avoids the problem of business discontinuity during the switching process of the slice service. It also refines the steps of the source base station for the first round of screening, only when the source base station judges that the target can perform remapping, or when the target is required to perform remapping (for example, if you want to switch slices that the target does not support, you do not need to ensure business continuity
- the handover request message can be sent, and the target base station is explicitly required to perform the slice remapping, which ensures the execution of the slice remapping, and avoids that the target base station does not support slices or does not perform after the handover request is sent.
- Slice remapping causes delay and waste of interface signaling.
- the target base station can also perform corresponding operations only when the source base station determines that remapping is to be performed, thereby avoiding the complexity
- the target base station determines whether to perform handover remapping, including one of the following methods:
- Step 150 including:
- Step 1511 According to the first slice information, the target base station determines whether to perform slice remapping.
- Step 150 including:
- Step 1513 When the fifth condition is met, the target base station determines to perform slice remapping.
- the target base station determines to perform slice remapping.
- Step 150 including:
- Step 1513 When the fifth condition is met, the target base station determines to perform slice remapping.
- the target base station determining to perform slice remapping includes:
- Step 15131 When it is determined that the fifth condition is satisfied according to the handover request message, the target base station determines to perform slice remapping.
- the target base station determines to perform slice remapping.
- the target base station determines to perform handover but does not perform slice remapping.
- Step 15133 Regardless of the result of the handover request in the handover request message, when the fifth condition is met, the target base station determines to perform slice remapping.
- the fifth condition includes at least one of the following:
- the slice supported by the target base station is different from the slice required to be switched by the terminal device requesting the handover;
- the target base station has slicing support capabilities, and the slicing support capabilities include remapping capabilities;
- the target base station does not support the slice corresponding to the PDU session requested by the source base station, but the target base station supports the default slice;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is the same as the slice service type field of the slice supported by the target base station, but the slice distinction is different;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice are the same;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice belong to the same service group;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but belongs to the same slice group.
- the slice is identified by at least one of the single network slice selection auxiliary information S-NSSAI and the network slice identity (NSID).
- S-NSSAI single network slice selection auxiliary information
- NSID network slice identity
- steps 1701 and 1702 need to be performed after step 1710. If the new PDU session is a PDU session currently established by the terminal device, the execution of steps 1701 and 1702 may be unchanged, or may be executed after step 1710.
- the new PDU session is a PDU session that is not currently established by the terminal device, a new PDU session needs to be created to correspond to the existing DRB of the original PDU session. If the new PDU session is a PDU session currently established by the terminal device, the original PDU session and DRB are deleted, and the data of the original DRB can be forwarded to the path of the new PDU session and passed to the UPF through N3.
- all the conversation lists may also be slice lists, or the conversation lists may include slice information.
- remapping can also be replaced with fallback.
- This specific implementation manner provides a judgment condition based on the slice remapping selected when the target base station performs the slice remapping, which ensures the effective realization of the slice remapping and avoids the problem of service discontinuity during the handover of the slice service.
- the target base station receives the handover request message sent by the source base station; the target base station determines whether to perform slice remapping. Therefore, when the target base station receives the handover request message sent by the source base station, the target base station determines whether to perform slice remapping, and performs slice remapping through the target base station, which ensures the continuity of the handover service during the slice handover, and solves the problem that occurs during the slice handover.
- Technical problems of business discontinuity are described by the target base station.
- Fig. 4 is a block diagram of a device for network slice switching provided in the second embodiment of the present application.
- the device is a target base station, which may include, but is not limited to: a receiving module 230 and a determining module 250.
- the receiving module 230 is used for the target base station to receive the handover request message sent by the source base station;
- the determining module 250 is used for the target base station to determine whether to perform slice remapping.
- the determining module 250 is also used for:
- the target base station determines whether to perform slice remapping.
- the determining module 250 is also used for:
- the target base station determines to perform slice remapping; where the first condition is used for the target base station to determine whether to perform slice remapping; the first condition is that the target base station determines according to the first slice information.
- the determining module 250 is also used for:
- the target base station determines to perform slice remapping.
- the first slice information includes at least one of the following:
- the first condition includes at least one of the following:
- the target base station has slicing support capabilities, and the slicing support capabilities include remapping capabilities;
- the target base station does not support the slice corresponding to the PDU session requested by the source base station, but the target base station supports the default slice;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is the same as the slice service type field of the slice supported by the target base station, but the slice distinction is different;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice are the same;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice belong to the same service group;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting handover is different from the slice supported by the target base station, but belongs to the same slice group; the PDU session and/or slice that needs to be switched have requirements and/or instructions for switching service continuity ;
- the PDU sessions and/or slices that need to be switched but the target does not support are priority guaranteed services and/or slices.
- the network slice switching device further includes:
- the remapping module 270 is used to perform slice remapping.
- the remapping module 270 is also used to:
- mapping relationship between the original PDU session and the user plane bearer DRB is modified to the mapping relationship between the new PDU session and the DRB.
- the remapping module 270 is also used to:
- the target base station sends a positive confirmation ACK of the handover request message to the source base station.
- the ACK includes the new PDU session information, and/or notifies the data forwarding channel of the DRB corresponding to the PDU session that needs to be remapped.
- the new PDU session information includes at least one of the following : Remapping indication; the original PDU session identifier; the slice corresponding to the original PDU session; the slice corresponding to the new PDU session; the new PDU session identifier; the mapping relationship between the original PDU session and the DRB; the mapping relationship between the new PDU session and the DRB;
- the source base station forwards the data corresponding to the original PDU session to the target base station through the data forwarding channel, and sends a handover command to the terminal device that requests the handover;
- the target base station sends a path switching request message to the access and mobility management entity AMF;
- the AMF sends a slice management function update session management context request to the session management entity SMF.
- the slice management function update session management context request packet includes the PDU session remapping reason, at least one of the PDU session remapping indication and the remapping reason;
- SMF triggers the PDU session modification and/or establishment process, modifying existing PDU sessions and/or adding new PDU sessions;
- UPF sends a session modification response to SMF
- UPF sends an end mark to the source base station
- SMF sends the slice management function update session management context response to the AMF, which is used to indicate the success of remapping the PDU session list;
- the target base station receives a positive confirmation of the path switch request message sent by the AMF, and the positive confirmation of the path switch request message includes the remapping session list;
- the target base station After the handover is successful, the target base station sends the released resources to the source base station.
- the network slice switching device may also include but is not limited to:
- the sending determination module 210 is used for the source base station to determine whether to send a handover request message to the target base station.
- the sending determination module 210 is further configured to:
- the source base station determines whether to send a handover request message to the target base station.
- the sending determination module 210 is further configured to:
- the source base station When the second condition is met, the source base station sends a handover request message to the target base station; the second condition is used to determine whether the source base station sends a handover request message to the target base station; the second condition is that the source base station determines according to the second slice information.
- the second slice information includes at least one of the following:
- the identifier corresponding to whether the default slice of the target base station supports.
- the second condition includes at least one of the following:
- the target base station has slicing support capabilities
- the slices supported by the source base station are the same as the slices supported by the target base station, or a subset of the slices supported by the target base station;
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the slice supported by the target base station, or is a subset of the slice supported by the target base station, or the service corresponding to the slice supported by the target base station belongs to a service group;
- the service corresponding to the slice supported by the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the corresponding service of the slice supported by the target base station, or the service corresponding to the slice supported by the target base station belongs to a service group;
- the service corresponding to the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the service corresponding to the slice supported by the target base station;
- the slices supported by the source base station and the slices supported by the target base station belong to the same group
- the slice corresponding to the PDU session currently established by the terminal device at the source base station and the slice supported by the target base station belong to the same group.
- the handover request message includes: remapping information, and the remapping information includes at least one of the following:
- Remapping indication the original PDU session identifier; the slice corresponding to the original PDU session; the slice corresponding to the new PDU session; the new PDU session identifier; the mapping relationship between the original PDU session and the DRB; the mapping relationship between the new PDU session and the DRB.
- the sending determination module 210 is further configured to:
- the source base station determines the result of the handover request according to the third slice information; wherein the third slice information is used to determine the result of the handover request;
- the handover request message to be sent to the target base station is determined, and the handover request message contains the result of the handover request.
- the third slice information includes at least one of the following:
- the result of determining the handover request message includes one of the following situations:
- the sending determination module 210 is further configured to:
- the result of the handover request is to send a handover request message, which carries a slice remapping indication;
- the third condition is used to determine whether the source base station sends a handover request message carrying a slice remapping indication to the target base station;
- the result of the handover request is to send a handover request message, which does not carry a slice remapping indication, or carries a non-slice remapping indication;
- the non-slice remapping indication is used for
- the target base station receives a handover request message that does not perform slice remapping, the target base station determines to perform handover but does not perform slice remapping;
- the fourth condition is used to determine whether the source base station sends a non-slice remapping indication to the target base station, or carries Handover request message indicated by non-slice remapping;
- the handover request result is that no handover request message is sent.
- the third condition includes at least one of the following:
- the target base station has slicing support capabilities
- the slices supported by the source base station are the same as the slices supported by the target base station, or a subset of the slices supported by the target base station;
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the slice supported by the target base station, or is a subset of the slice supported by the target base station;
- the service corresponding to the slice supported by the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the corresponding service of the slice supported by the target base station;
- the service corresponding to the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the service corresponding to the slice supported by the target base station, or is a subset of the service corresponding to the slice supported by the target base station;
- the slices supported by the source base station and the slices supported by the target base station belong to the same group
- PDU sessions and/or slices that need to be switched have requirements and/or instructions for switching service continuity
- the PDU sessions and/or slices that need to be switched but the target does not support are priority guaranteed services and/or slices.
- the fourth condition includes at least one of the following:
- the target base station does not support slicing
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is the same as the slice supported by the target base station;
- PDU sessions and/or slices that need to be handed over but are not supported by the target are not services and/or slices that require priority guarantee;
- the PDU sessions and/or slices that need to be switched do not have requirements and/or instructions for switching service continuity.
- the PDU session and/or slice that needs to be switched but the target does not support is not a service and/or slice that needs to be preferentially guaranteed, and/or the PDU session and/or slice that needs to be switched does not have a requirement for switching service continuity And/or instructions, including:
- the slice corresponding to the PDU session currently established by the terminal device at the source base station is different from the slice supported by the target base station; and/or,
- the service corresponding to the slice corresponding to the PDU session currently established by the terminal device at the source base station is different from the service corresponding to the slice supported by the target base station.
- the determining module 250 is also used for:
- the target base station determines to perform slice remapping; wherein, the fifth condition is used for the target base station to determine whether to perform slice remapping.
- the fifth condition includes at least one of the following:
- the slice supported by the target base station is different from the slice required to be switched by the terminal device requesting the handover;
- the target base station has slicing support capabilities, and the slicing support capabilities include remapping capabilities;
- the target base station does not support the slice corresponding to the PDU session requested by the source base station, but the target base station supports the default slice;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is the same as the slice service type field of the slice supported by the target base station, but the slice distinction is different;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice are the same;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but the services corresponding to the slice belong to the same service group;
- the slice corresponding to the PDU session established at the source base station by the terminal device requesting the handover is different from the slice supported by the target base station, but belongs to the same slice group.
- the slice is identified by at least one of the single network slice selection auxiliary information S-NSSAI and the network slice identifier NSID.
- Fig. 5 is a block diagram of a device for network slice switching provided in the third embodiment of the present application.
- the device is a source base station, which may include, but is not limited to: a sending module 330 and a receiving module 350.
- the sending module 330 is configured to send a handover request message from the source base station to the target base station; wherein the handover request message is used for the target base station to determine whether to perform slice remapping when the target base station receives the handover request message;
- the receiving module 350 is used for the source base station to receive the positive confirmation of the handover request message fed back by the target base station.
- the positive confirmation of the handover request message includes the new packet data unit PDU session information, and/or notifies the user corresponding to the PDU session that needs to be remapped
- the data forwarding channel that carries the DRB on the plane.
- the network slice switching device may also include but is not limited to:
- the determining module 310 is used for the source base station to determine whether to send a handover request message to the target base station.
- the determining module 310 is also used for:
- the source base station determines whether to send a handover request message to the target base station.
- the determining module 310 is also used for:
- the source base station When the second condition is met, the source base station sends a handover request message to the target base station; the second condition is used to determine whether the source base station sends a handover request message to the target base station; the second condition is that the source base station determines according to the second slice information.
- the determining module 310 is also used for:
- the source base station determines the result of the handover request according to the third slice information; wherein the third slice information is used to determine the result of the handover request;
- the handover request message contains the result of the handover request.
- the sending module 330 is also used to:
- the receiving module 350 is also used for:
- FIG. 6 is a schematic diagram of the hardware structure of a device for network slice switching provided in the fourth embodiment of the application.
- the device includes a processor 410 and a memory 420, and the above-mentioned components of the device implement communication connections with each other through a bus system.
- the memory 420 stores a program that can be run on the processor 410, and when the processor 410 executes the program, some or all of the steps of the network slice switching method in the first embodiment of the above method are implemented.
- the processor 410 may also be an independent component, or may be a collective name for multiple processing elements. For example, it may be a CPU, an ASIC, or one or more integrated circuits configured to implement the above method, such as at least one microprocessor DSP, or at least one programmable gate FPGA.
- the steps of the method or algorithm described in the specific implementation manners of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
- Software instructions can be composed of corresponding software modules, which can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read Only Memory, ROM), and erasable programmable read-only memory ( Erasable Programmable ROM (EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art.
- An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium.
- the storage medium may also be an integral part of the processor.
- the processor and the storage medium may be located in the ASIC.
- the ASIC may be located in an access network device, a target network device, or a core network device.
- the processor and the storage medium may also exist as discrete components in the access network device, the target network device, or the core network device.
- the functions described in the specific embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- software it can be implemented in the form of a computer program product in whole or in part.
- the computer program product includes one or more computer instructions.
- the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
- the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
- the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
- the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a Digital Video Disc (DVD)), or a semiconductor medium (for example, a Solid State Disk (SSD)) )Wait.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本申请揭示了一种网络切片切换的方法及装置。该方法包括:目标基站接收源基站发送的切换请求消息;目标基站确定是否进行切片重映射。从而在目标基站接收源基站发送的切换请求消息时,目标基站确定是否进行切片重映射,通过目标基站进行切片重映射,保证了切片切换时,切换业务的连续性,解决了切片切换时出现的业务不连续的技术问题。
Description
本申请涉及通信技术领域,尤其涉及一种网络切片切换的方法及装置。
在现有的切片(slice)技术进行切片切换的过程中,现有的切换流程为源基站配置UE(User Equipment,终端设备)进行测量上报,并基于UE的上报结果向目标基站发送切换请求消息(Handover request)。在切换请求消息中,会携带PDU session(Packet Data Unit session,分组数据单元会话)相关信息。目标基站执行接入控制,当切换请求消息中的PDU session对应目标基站不支持的切片,目标基站将拒绝该PDU session。
在现有的切片切换过程中,当目标基站不支持某个源基站想要切换的切片时,目标基站就会拒绝这个切片对应的PDU session,存在着切片切换时出现的业务不连续的技术问题。
发明内容
本申请提供了一种解决切片切换时出现的业务不连续的技术问题的方法、装置及其设备。
第一方面,本申请具体实施方式提供一种网络切片切换的方法,应用于目标基站,包括:
目标基站接收源基站发送的切换请求消息;
目标基站确定是否进行切片重映射。
第二方面,本申请具体实施方式体统一种网络切片切换的方法,应用于源基站,包括:
源基站向目标基站发送切换请求消息;其中,切换请求消息用于当目标基站接收切换请求消息时,目标基站确定是否进行切片重映射;
源基站接收目标基站反馈的切换请求消息的肯定确认,切换请求消息的肯定确认包括新分组数据单元PDU会话信息,和/或通知对应新PDU会话的用户面承载DRB的数据转发通道。
第三方面,本申请具体实施方式提供一种网络切片切换的装置,包括:
接收模块,用于目标基站接收源基站发送的切换请求消息;
确定模块,用于目标基站确定是否进行切片重映射。
第四方面,本申请具体实施方式提供一种网络切片切换的装置,包括:
发送模块,用于源基站向目标基站发送切换请求消息;其中,切换请求消息用于当目标基站接收切换请求消息时,目标基站确定是否进行切片重映射;
接收模块,用于源基站接收目标基站反馈的切换请求消息的肯定确认,切换请求消息的肯定确认包括新分组数据单元PDU会话信息,和/或通知对应新PDU会话的用户面承载DRB的数据转发通道。
第五方面,本申请具体实施方式提供一种网络设备,该网络设备包括:处理器,存储器,存储器上存储可在处理器上运行的传输程序,处理器执行程序时,实现上述任意一种网络切片切换的方法。
第六方面,本申请具体实施方式提供一种计算机可读存储介质,其存储有计算机程序,其中,计算机程序被执行时实现上述任意一种网络切片切换的方法。
第七方面,本申请具体实施方式提供一种计算机程序产品,计算机程序产品存储于非瞬时性计算机可读存储介质,计算机程序被执行时实现上述任意一种网络切片切换的方法。
第八方面,本申请具体实施方式提供一种芯片,其包括:处理器,用于从存储器中调用并运行计算机程序,安装有芯片的设备执行上述任意一种网络切片切换的方法。
第九方面,本申请具体实施方式提供一种计算机程序,计算机程序被执行时实现上述任意一种网络切片切换的方法。
本申请的具体实施方式提供的技术方案可以包括以下有益效果:
目标基站接收源基站发送的切换请求消息,目标基站确定是否进行切片重映射。从而在目标基站接收源基站发送的切换请求消息时,目标基站确定是否进行切片重映射,通过目标基站进行切片重映射,保证了切片切换时,切换业务的连续性,解决了切片切换时出现的业务不连续的技术问题。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性的,并不能限制本申请。
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本申请的具体实施方式,并于说明书一起用于解释本申请的原理。
图1是本申请具体实施方式可能应用的一种通信系统的网络架构图;
图2是本申请具体实施方式一的一种网络切片切换的方法的流程图;
图3是本申请具体实施方式一的一种网络切片切换的方法的信令交互图;
图4是本申请实施方式二提供的一种网络切片切换的装置的框图;
图5是本申请实施方式三提供的一种网络切片切换的装置的框图;
图6是申请实施方式四提供的一种用于网络切片切换的装置的硬件结构示意图。
这里将详细地对示例性具体实施方式执行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性具体实施方式中所描述的实施方式并不代表与本申请的具体实施方式相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的方法和装置的例子。基于本申请中的具体实施方式,本领域技术人员在没有做出创造性劳动前提下获得的所有其他具体实施方式,都属于本申请的保护范围。
图1为本申请以下具体实施方式可能应用的通信系统的系统架构。该系统架构包括:基站A,基站B,终端设备C。
为了满足垂直行业对延迟、移动性、可靠性、位置精度等方面的需求,RAN(Radio Access Network,无线接入网络)需要对如何在接入网支持垂直业务进行增强。其中,一种方式为,对基于网络切片,RAN切片可以让应用程序提供商参与定制RAN的设计、部署和操作,以更好地支持应用程序提供商的业务。因此,Release 17(第17版本)引入接入网对切片的增强。
目前RAN侧针对每一个切片定义了一个S-NSSAI,即单一网络切片选择辅助信息(Single Network Slice Selection Assistance Information)。UE侧维护了一个NSSAI,NSSAI是一个S-NSSAI列表,UE側最多可以支持8个S-NSSAI。
S-NSSAI由SST(Slice/Service Type,切片业务类型)和SD(Slice Differentiator,切片区分)组成,SST代表业务类型,SD代表同一个SST下服务的不同UE组。
在现有的切片切换过程中,当目标基站不支持某个源基站想要切换的切片时,目标基站就会拒绝这个切片对应的PDU session,存在着切片切换时出现的业务不连续的技术问题。本申请以下具体实施方式将详细描述如何通过实现切片重映射(slice remap),解决切片切换时出现的业务不连续的技术问题。
在本系统架构中,该示例通信系统可以是全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新无线(New Radio,NR)系统、NR系统的演进系统、非授权频段上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频段上的NR系统(New Radio based access to unlicensed spectrum,NR-U)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、下一代通信系统或其他通信系统等。
该示例通信系统具体包括网络设备和终端,终端接入网络设备提供的移动通信网络时,终端与网络设备之间可以通过无线链路通信连接,该通信连接方式可以是单连接方式或者双连接方式或者多连接方式,但通信连接方式为单连接方式时,网络设备可以是LTE基站或者NR基站(又称为gNB基站),当通信方式为双连接方式时(具体可以通过载波聚合CA技术实现,或者多个网络设备实现)。本申请具体实施方式所涉及到的终端可以包括各种具有无限通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备,以及各种形式的用户设备(User Equipment,UE),移动台(Mobile Station,MS),终端设备(terminal device)等等。为方便描述,上面提到的设备统称为终端设备。
另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,在本申请具体实施方式中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
图2是本申请具体实施方式一的一种网络切片切换的方法的流程图。如图2所示,该网络切片切换的方法应用于目标基站,可以包括以下步骤:
步骤130,目标基站接收源基站发送的切换请求消息。
步骤150,目标基站确定是否进行切片重映射。
其中,切换请求消息(handover request)用于指示目标基站进行切片切换,当目标基站接收源基站发送的切换请求消息时,目标基站确定是否进行切片重映射(slice remap),确定进行切片重映射的方法可以为目标基站执行admission control(接纳控制)。可选的,切片重映射也可以是切片回退。
可选的,该步骤150可以包括以下步骤:
步骤1511中,根据第一切片信息,目标基站确定是否进行切片重映射。
可选的,该步骤1511可以包括以下步骤:
满足第一条件时,目标基站确定进行切片重映射;其中,第一条件用于目标基站确定是否进行切片重映射;第一条件为目标基站根据第一切片信息确定。
可选的,该步骤1511可以包括以下步骤:
根据第一切片信息确定满足第一条件时,若目标基站支持的切片与请求进行切换的终端设备需求切换的切片不同,目标基站确定进行切片重映射。
其中,根据第一切片信息确定目标基站是否执行切片重映射。第一切片信息的获取方式为:从OAM(Orbital Angular Momentum,轨道角动量)获取,和/或从AMF(Access and Mobility Management Function,接入和移动性管理实体)获取,和/或从邻基站获取。根据第一切片信息,判断目标基站是否满足第一条件时,和/或,当确定目标基站满足第一条件时,若目标基站支持的切片与请求进行切换的终端设备需求切换的切片不同,目标基站确定进行切片重映射。
可选的,该第一切片信息包括以下至少一种:
目标基站的切片支持能力;
源基站支持的;
终端设备当前在源基站建立的分组数据单元PDU会话(session)对应的切片;
目标基站支持的切片;
原PDU会话对应的切片对应的业务;
原PDU会话对应的切片归属的组(同一组切片之间可以相互重映射);
对应目标基站的默认(default)切片是否支持的指示;
需要切换的PDU会话和/或切片是否具有切换(Handover,HO)业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话和/或切片是否为优先保证的业务和/或切片。
可选的,该第一条件包括以下的至少一种:
目标基站具备切片支持能力,切片支持能力包括重映射(remap)能力;
目标基站不支持源基站请求的PDU会话对应的切片,但目标基站支持默认切片;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片的切片业务类型(SST)域相同,但切片区分(SD)不同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务相同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是属于同一个切片组;
需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
可选的,该网络切片切换的方法,还可以包括以下步骤:
步骤170,进行切片重映射。
可选的,该步骤170可以包括以下步骤:
将原PDU会话与用户面承载DRB((user)Data Radio Bearer,用户面承载)的映射关系,修改为新PDU会话与DRB的映射关系。
请一并参看图3,图3是本申请具体实施方式一的一种网络切片切换的方法的信令交互图。如图3所示,可选的,该将原PDU会话与用户面承载DRB的映射关系,修改为新PDU会话与DRB的映射关系可以包括以下步骤至少之一:
步骤1701,目标基站发送切换请求消息的肯定确认ACK(Acknowledge)给源基站,ACK包括新 PDU会话信息,和/或,通知对应需要被重映射的PDU会话的DRB的数据转发通道(data forwarding tunnel),新PDU会话信息包括以下至少一种:重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系,可选的,对应需要被重映射的PDU会话可以为对应新PDU会话的DRB的数据转发通道;
步骤1702,源基站通过数据转发通道,将对应原PDU会话的数据转发(forward)到目标基站,并向请求进行切换的终端设备发送切换命令(HO command);
步骤1703,目标基站向接入和移动性管理实体AMF(Access and Mobility Management Function)发送路径切换请求消息,该路径切换请求消息为N2路径切换请求消息(N2Path Switch Request),该路径切换请求消息可以包括:包含每个PDU会话重映射理由的重映射PDU会话列表(List of PDU Sessions Remapped with a Remapped Cause per PDU Session),其中,理由(cause)包括切片重映射,列表信息(List)包括:原PDU会话标识和/或新PDU会话标识;
步骤1704,AMF向会话管理实体SMF(Session management Function)发送切片管理功能更新会话管理上下文请求(Nsmf_PDUSession_UpdateSMContext Request),切片管理功能更新会话管理上下文请求包括PDU会话重映射列表(PDU session Remapped with a remapped Cause),PDU会话重映射指示(PDU Session Is To Be Remapped)和重映射理由(remapped Cause)至少之一;
步骤1705,SMF触发PDU会话修改(modification)和/或建立过程(establishment),修改现有PDU会话和/或添加新PDU会话,在触发过程中,SMF可以通知终端设备UE建立新的PDU会话;
步骤1706,SMF向用户平面实体UPF(User plane function)发送会话修改请求,该会话修改请求为N4会话修改请求(N4Session Modification Request),触发结束标记(end marker);
步骤1707,UPF向SMF发送会话修改响应,该会话修改响应为N4会话修改响应(N4Session Modification Response);
步骤1708,UPF发送结束标记到源基站;
步骤1709,SMF向AMF发送切片管理功能更新会话管理上下文响应(Nsmf_PDUSession_UpdateSMContext Response),用于指示PDU会话列表(list of PDU Session)重映射成功。进一步的,可以指示重映射成功的会话列表;
步骤1710,AMF给目标基站发送路径切换请求消息肯定确认,该路径切换请求消息肯定确认为N2路径切换请求消息肯定确认(N2路径切换请求消息肯定确认),路径切换请求消息肯定确认包括重映射会话列表(remaped PDU session list);
步骤1711,目标基站在切换成功后,发送释放资源(Release Resources)给源基站。
请继续参看图3,该网络切片切换的方法,还可以包括以下步骤:
步骤110,源基站确定是否向目标基站发送切换请求消息。
其中,判断是否向目标基站发送切换请求消息有两种方式:
方式一:步骤110,包括:
步骤1111,根据第二切片信息,源基站确定是否向目标基站发送切换请求消息。
可选的,该步骤1111包括:源基站根据第二切片信息确定是否满足第二条件,源基站确定是否向目标基站发送切换请求消息。
可选的,该步骤1111包括:满足第二条件时,源基站向目标基站发送切换请求消息;其中,第二条件用于确定源基站是否向目标基站发送切换请求消息;第二条件为源基站根据所述第二切片信息确定。
可选的,该第二切片信息包括以下至少一种:
目标基站的切片支持能力;
源基站支持的切片;
终端设备当前在源基站建立的PDU会话对应的切片;
目标基站支持的切片;
原PDU会话对应的切片对应的业务;
原PDU会话对应的切片归属的组;
对应目标基站的默认切片是否支持的指示。
可选的,该第二条件包括以下至少一种:
目标基站具备切片支持能力,该切片支持能力可以包括重映射能力;
具有对应目标基站的默认切片支持的指示;
源基站支持的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同,或者是目标基站 支持的切片的子集,或者与目标基站支持的切片的对应的业务属于一个业务组;
源基站支持的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片的对应的业务的子集,或者与目标基站支持的切片的对应的业务属于一个业务组;
终端设备当前在源基站建立的PDU会话对应的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片对应的业务的子集;
源基站支持的切片与目标基站支持的切片归属于同一个组;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片归属于同一个组。
可选的,该切换请求消息包括:重映射信息,该重映射信息包括以下至少一种:
重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系。
其中,源基站根据第二切片信息,确定源基站满足第二条件时,源基站向目标基站发送切换请求消息。该切换请求消息可以包括:重映射信息,该重映射信息包括以下情况的至少一种:
重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系(也可以用QoS(Quality of Service,服务质量)flow(QoS流)替换PDU会话);
可选的,若需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示,和/或,需要切换但目标不支持的PDU会话和/或切片不是优先保证的业务和/或切片,源基站仍然可以触发切换请求消息。相应的处理同legacy HO(传统切换)。
方式一给出了切片重映射的判断条件,保证了切片重映射的有效实现,避免了切片业务在切换过程中业务不连续的问题。还增加了由源基站进行第一轮筛选的步骤,避免了切换请求消息发送后,目标基站不支持切片,造成的时延和接口信令浪费。
方式二:步骤110包括:
步骤1121,源基站根据第三切片信息,确定切换请求结果;其中,该第三切片信息用于确定切换请求结果;
步骤1123,根据切换请求结果,确定是否向目标基站发送切换请求消息。进一步的,切换请求消息可以包含切换请求结果。
可选的,该第三切片信息包括以下至少一种:
目标基站的切片支持能力;
源基站支持的切片;
终端设备当前在源基站建立的PDU会话对应的切片;
目标基站支持的切片;
原PDU会话对应的切片对应的业务;
原PDU会话对应的切片归属的组;
对应目标基站的默认切片是否支持的指示;
需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话或切片是否为优先保证的业务和/或切片。
可选的,该切换请求消息结果包括以下情况的其中一种:
发送切换请求消息,其中携带切片重映射指示,可选的,该切片重映射指示可以为切片重映射切换指示(HO with slice remapping indication);
发送切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示,可选的,该非切片重映射指示为切换指示(HO indication)和/或非切片重映射切换指示(HO without slice remapping indication);
不发送切换请求消息,可选的,该不发送切换请求信息可以为不切换指示(no HO)。
可选的,步骤1123,根据切换请求结果,确定向目标基站发送切换请求消息,切换请求消息包含切换请求结果,包括:
步骤11231,当满足第三条件时,切换请求结果为发送切换请求消息,其中携带切片重映射指示;第三条件用于确定源基站是否向目标基站发送携带切片重映射指示的切换请求消息。
可选的,根据第三切片信息确定第三条件。
可选的,当源基站满足第三条件时,切换请求结果为切片重映射切换指示,源基站判断需要进行切片重映射,此时源基站向目标基站发送切换请求消息,切换请求信息可以携带:重映射信息,重映射信息包括以下情况的至少一种:
重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标 识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系(也可以用QoS flow替换PDU会话)。
步骤11233,当未满足第三条件,和/或,满足第四条件时,切换请求结果为发送所述切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;非切片重映射指示用于当目标基站接收不进行切片重映射的切换请求消息时,目标基站确定进行切换但不进行切片重映射;第四条件用于确定源基站是否向目标基站发送不携带切片重映射指示,或者,携带非切片重映射指示的切换请求消息。
可选的,根据第三切片信息确定第三条件,和/或,第四条件。
步骤11235,当未满足第三条件和/或,未满足第四条件时,切换请求结果为不发送切换请求消息。可选的,当源基站满足以下条件时,切换请求结果为不切换指示,即源基站不向目标基站发送切换请求消息:
目标基站不支持切片;和/或,需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片;和/或,需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示。
可选的,根据第三切片信息确定第三条件,和/或,第四条件。
可选的,该第三条件包括以下至少一种:
目标基站具备切片支持能力,该切片支持能力可以包括重映射能力;
具有对应目标基站的默认切片支持的指示;
源基站支持的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集;
源基站支持的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片的对应的业务的子集;
终端设备当前在源基站建立的PDU会话对应的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片对应的业务的子集;
源基站支持的切片与目标基站支持的切片归属于同一个组;
需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
可选的,该第四条件包括以下至少一种:
目标基站不支持切片,可以包括切片能力;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同;
需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片;
需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示。
可选的,需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片,和/或,需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示,还包括:
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片不同;和/或,
终端设备当前在源基站建立的PDU会话对应的切片对应业务与目标基站支持的切片对应的业务不同。
方式二给出了切片重映射的判断条件,具体流程和细节,保证了切片重映射的有效实现,避免了切片业务在切换过程中业务不连续的问题。还细化了源基站进行第一轮筛选的步骤,仅在源基站判断目标可以执行重映射,或者,需要目标执行重映射时(例如想切换但是目标不支持的切片,可以不用保证业务连续性时,可以不要求进行切片重映射)才发送切换请求消息,并明确要求目标基站执行切片重映射,保证了切片重映射的执行,避免了切换请求发送后,目标基站不支持切片,或不执行切片重映射,造成的时延和接口信令浪费。此外,还可以使得目标基站在源基站判断要做重映射时才执行相应的操作,避免基站实现的复杂度。
可选的,步骤150,目标基站确定是否进行切换重映射,包括以下几种方式之一:
方式一:步骤150,包括:
步骤1511,根据第一切片信息,目标基站确定是否进行切片重映射。
方式二:步骤150,包括:
步骤1513,满足第五条件时,目标基站确定进行切片重映射。
具体的,收到切换请求消息后,在满足第五条件时,目标基站确定进行切片重映射。
方式三:步骤150,包括:
步骤1513,满足第五条件时,目标基站确定进行切片重映射。
可选的,步骤1513满足第五条件时,目标基站确定进行切片重映射包括:
步骤15131,根据切换请求消息确定满足第五条件时,目标基站确定进行切片重映射。
根据切换请求消息,其中切换请求结果为切片重映射切换指示,确定满足第五条件时,目标基站确定进行切片重映射。
当切换请求结果为无指示和/或切换指示和/或非切片重映射切换指示时,目标基站确定进行切换但不进行切片重映射。
步骤15133,无论切换请求消息中的切换请求结果为何,满足第五条件时,目标基站确定进行切片重映射。
可选的,该第五条件包括以下至少一种:
无条件;
目标基站支持的切片与请求切换的终端设备需求切换的切片不同;
目标基站具备切片支持能力,切片支持能力包括重映射能力;
目标基站不支持源基站请求的PDU会话对应的切片,但目标基站支持默认切片;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片的切片业务类型域相同,但切片区分不同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务相同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是属于同一个切片组。
可选的,该切片由单一网络切片选择辅助信息S-NSSAI和网络切片标识NSID(Network Slice Identity)至少之一标识。
可选的,若新PDU会话为终端设备当前未建立的PDU会话,因为有可能新的PDU会话建立不成功,因此步骤1701,1702需要在步骤1710后执行。若新PDU会话为终端设备当前已经建立的PDU会话,那么步骤1701,1702的执行可以不变,也可以在步骤1710后执行。
若新PDU会话为终端设备当前未建立的PDU会话,则需要新建PDU会话,以对应已经有的原来的PDU会话的DRB。若新PDU会话为终端设备当前已经建立的PDU会话,则删除原来的PDU会话和DRB,并且可以把原来DRB的数据forward(转发)到新PDU会话的路径上,通过N3传给UPF。
可选的,所有的会话列表,也可以是切片列表,或者,会话列表中包括切片信息。
可选的,重映射也可以替换为回退。该具体实施方式给出了基于目标基站执行切片重映射时选择的切片重映射的判断条件,保证了切片重映射的有效实现,避免了切片业务在切换过程中业务不连续的问题。
此实施方式一目标基站接收源基站发送的切换请求消息;目标基站确定是否进行切片重映射。从而在目标基站接收源基站发送的切换请求消息时,目标基站确定是否进行切片重映射,通过目标基站进行切片重映射,保证了切片切换时,切换业务的连续性,解决了切片切换时出现的业务不连续的技术问题。
图4是本申请实施方式二提供的一种网络切片切换的装置的框图。如图4所示,该装置为目标基站,可以包括但不限于:接收模块230和确定模块250。
接收模块230,用于目标基站接收源基站发送的切换请求消息;
确定模块250,用于目标基站确定是否进行切片重映射。
可选的,该确定模块250还用于:
根据第一切片信息,目标基站确定是否进行切片重映射。
可选的,该确定模块250还用于:
满足第一条件时,目标基站确定进行切片重映射;其中,第一条件用于目标基站确定是否进行切片重映射;第一条件为所述目标基站根据第一切片信息确定。
可选的,该确定模块250还用于:
根据第一切片信息确定满足第一条件时,若目标基站支持的切片与请求进行切换的终端设备需求切换的切片不同,目标基站确定进行切片重映射。
可选的,该第一切片信息包括以下至少一种:
目标基站的切片支持能力;
源基站支持的切片;
终端设备当前在源基站建立的分组数据单元PDU会话对应的切片;
目标基站支持的切片;
原PDU会话对应的切片对应的业务;
原PDU会话对应的切片归属的组;
对应目标基站的默认切片是否支持的指示;
需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话和/或切片是否为优先保证的业务和/或切片。
可选的,该第一条件包括以下至少一种:
目标基站具备切片支持能力,切片支持能力包括重映射能力;
目标基站不支持源基站请求的PDU会话对应的切片,但目标基站支持默认切片;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片的切片业务类型域相同,但切片区分不同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务相同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是属于同一个切片组;需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
可选的,该网络切片切换的装置还包括:
重映射模块270,用于进行切片重映射。
可选的,该重映射模块270还用于:
将原PDU会话与用户面承载DRB的映射关系,修改为新PDU会话与DRB的映射关系。
可选的,该重映射模块270还用于:
目标基站发送切换请求消息的肯定确认ACK给源基站,ACK包括新PDU会话信息,和/或,通知对应需要被重映射的PDU会话的DRB的数据转发通道,新PDU会话信息包括以下至少一种:重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系;
源基站通过数据转发通道,将对应原PDU会话的数据转发到目标基站,并向请求进行切换的终端设备发送切换命令;
目标基站向接入和移动性管理实体AMF发送路径切换请求消息;
AMF向会话管理实体SMF发送切片管理功能更新会话管理上下文请求,切片管理功能更新会话管理上下文请求包包括PDU会话重映射理由,PDU会话重映射指示和重映射理由至少之一;
SMF触发PDU会话修改和/或建立过程,修改现有PDU会话和/或添加新PDU会话;
SMF向用户平面实体UPF发送会话修改请求;
UPF向SMF发送会话修改响应;
UPF发送结束标记到源基站;
SMF向AMF发送切片管理功能更新会话管理上下文响应,用于指示PDU会话列表重映射成功;
目标基站接收AMF发送的路径切换请求消息肯定确认,路径切换请求消息肯定确认包括重映射会话列表;
目标基站在切换成功后,发送释放资源给源基站。
可选的,该网络切片切换的装置还可以包括但不限于:
发送确定模块210,用于源基站确定是否向目标基站发送切换请求消息。
可选的,该发送确定模块210还用于:
根据第二切片信息,源基站确定是否向目标基站发送切换请求消息。
可选的,该发送确定模块210还用于:
满足第二条件时,源基站向目标基站发送切换请求消息;其中,第二条件用于确定源基站是否向目标基站发送切换请求消息;第二条件为源基站根据第二切片信息确定。
可选的,该第二切片信息包括以下至少一种:
目标基站的切片支持能力;
源基站支持的切片;
终端设备当前在源基站建立的PDU会话对应的切片;
目标基站支持的切片;
原PDU会话对应的切片对应的业务;
原PDU会话对应的切片归属的组;
对应目标基站的默认切片是否支持的标识。
可选的,该第二条件包括以下至少一种:
目标基站具备切片支持能力;
具有对应目标基站的默认切片支持的标识;
源基站支持的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集,或者与目标基站支持的切片的对应的业务属于一个业务组;
源基站支持的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片的对应的业务的子集,或者与目标基站支持的切片的对应的业务属于一个业务组;
终端设备当前在源基站建立的PDU会话对应的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片对应的业务的子集;
源基站支持的切片与目标基站支持的切片归属于同一个组;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片归属于同一个组。
可选的,该切换请求消息包括:重映射信息,重映射信息包括以下至少一种:
重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系。
可选的,该发送确定模块210还用于:
源基站根据第三切片信息,确定切换请求结果;其中,该第三切片信息用于确定切换请求结果;
根据切换请求结果,确定向目标基站发送的切换请求消息,切换请求消息包含切换请求结果。
可选的,该第三切片信息包括以下至少一种:
目标基站的切片支持能力;
源基站支持的切片;
终端设备当前在源基站建立的PDU会话对应的切片;
目标基站支持的切片;
原PDU会话对应的切片对应的业务;
原PDU会话对应的切片归属的组;
对应目标基站的默认切片是否支持的指示;
需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话或切片是否为优先保证的业务和/或切片。
可选的,该确定切换请求消息结果包括以下情况的其中一种:
发送切换请求消息,其中携带切片重映射指示;
发送切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;
不发送切换请求消息。
可选的,该发送确定模块210还用于:
当满足第三条件时,切换请求结果为发送切换请求消息,其中携带切片重映射指示;第三条件用于确定源基站是否向目标基站发送携带切片重映射指示的切换请求消息;
当未满足第三条件,和/或,满足第四条件时,切换请求结果为发送切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;非切片重映射指示用于当目标基站接收不进行切片重映射的切换请求消息时,目标基站确定进行切换但不进行切片重映射;第四条件用于确定源基站是否向目标基站发送不携带切片重映射指示,或者,携带非切片重映射指示的切换请求消息;
当未满足第三条件和/或,未满足第四条件时,切换请求结果为不发送切换请求消息。
可选的,该第三条件包括以下至少一种:
目标基站具备切片支持能力;
具有对应目标基站的默认切片支持的指示;
源基站支持的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同,或者是目标基站支持的切片的子集;
源基站支持的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片的对应的业务的子集;
终端设备当前在源基站建立的PDU会话对应的切片对应的业务与目标基站支持的切片对应的业务相同,或者是目标基站支持的切片对应的业务的子集;
源基站支持的切片与目标基站支持的切片归属于同一个组;
需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;
需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
可选的,该第四条件包括以下至少一种:
目标基站不支持切片;
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同;
需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片;
需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示。
可选的,该需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片,和/或,需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示,包括:
终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片不同;和/或,
终端设备当前在源基站建立的PDU会话对应的切片对应业务与目标基站支持的切片对应的业务不同。
可选的,该确定模块250还用于:
满足第五条件时,目标基站确定进行切片重映射;其中,该第五条件用于目标基站确定是否进行切片重映射。
可选的,该第五条件包括以下至少一种:
无条件;
目标基站支持的切片与请求切换的终端设备需求切换的切片不同;
目标基站具备切片支持能力,切片支持能力包括重映射能力;
目标基站不支持源基站请求的PDU会话对应的切片,但目标基站支持默认切片;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片的切片业务类型域相同,但切片区分不同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是切片对应的业务相同;
请求切换的终端设备在源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;
请求切换的终端设备在源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是属于同一个切片组。
可选的,该切片由单一网络切片选择辅助信息S-NSSAI和网络切片标识NSID至少之一标识。
本实施方式中各个模块的功能和作用的实现过程以及其他未做详细阐述或定义的部分,详见上述实施方式一中的阐述,在此不做赘述。
图5是本申请实施方式三提供的一种网络切片切换的装置的框图。如图5所示,该装置为源基站,可以包括但不限于:发送模块330和接收模块350。
发送模块330,用于源基站向目标基站发送切换请求消息;其中,切换请求消息用于当目标基站接收切换请求消息时,目标基站确定是否进行切片重映射;
接收模块350,用于源基站接收目标基站反馈的切换请求消息的肯定确认,切换请求消息的肯定确认包括新分组数据单元PDU会话信息,和/或,通知对应需要被重映射的PDU会话的用户面承载DRB的数据转发通道。
可选的,该网络切片切换的装置还可以包括但不限于:
确定模块310,用于源基站确定是否向目标基站发送切换请求消息。
可选的,该确定模块310还用于:
根据第二切片信息,源基站确定是否向目标基站发送切换请求消息。
可选的,该确定模块310还用于:
满足第二条件时,源基站向目标基站发送切换请求消息;其中,第二条件用于确定源基站是否向目标基站发送切换请求消息;第二条件为源基站根据第二切片信息确定。
可选的,该确定模块310还用于:
源基站根据第三切片信息,确定切换请求结果;其中,第三切片信息用于确定切换请求结果;
根据切换请求结果,确定向目标基站发送切换请求消息,切换请求消息包含切换请求结果。
可选的,该发送模块330还用于:
通过数据转发通道,将对应原PDU会话的数据转发到目标基站;
向请求进行切换的终端设备发送切换命令;
可选的,该接收模块350还用于:
接收用户平面实体UPF发送的结束标记;
接收目标基站发送的释放资源。
本实施方式中各个模块的功能和作用的实现过程以及其他未做详细阐述或定义的部分,详见上述实施方式一中的阐述,在此不做赘述。
图6是申请实施方式四提供的一种用于网络切片切换的装置的硬件结构示意图。如图6所示,该装置包括:处理器410,存储器420,该装置的上述各组件通过总线系统实现相互之间的通信连接。
存储器420上存储可在处理器410上运行的程序,处理器410执行程序时,实现上述方法具体实施方式一中网络切片切换的方法部分或全部步骤。
该处理器410也可以是一个独立的元器件,也可以是多个处理元件的统称。例如,可以是CPU,也可以是ASIC,或者被配置成实施以上方法的一个或多个集成电路,如至少一个微处理器DSP,或至少一个可编程门这列FPGA等。
本申请具体实施方式所描述的方法或者算法的步骤可以以硬件的方式来实现,也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read Only Memory,ROM)、可擦除可编程只读存储器(Erasable Programmable ROM,EPROM)、电可擦可编程只读存储器(Electrically EPROM,EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,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。当然,存储介质也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。另外,该ASIC可以位于接入网设备、目标网络设备或核心网设备中。当然,处理器和存储介质也可以作为分立组件存在于接入网设备、目标网络设备或核心网设备中。
本领域技术人员应该可以意识到,在上述一个或多个示例中,本申请具体实施方式所描述的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请具体实施方式所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,数字视频光盘(Digital Video Disc,DVD))、或者半导体介质(例如,固态硬盘(Solid State Disk,SSD))等。
以上所述的具体实施方式,对本申请具体实施方式的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本申请具体实施方式的具体实施方式而已,并不用于限定本申请具体实施方式的保护范围,凡在本申请具体实施方式的技术方案的基础之上,所做的任何修改、等同替换、改进等,均应包括在本申请具体实施方式的保护范围之内。
应当理解的是,本申请并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围执行各种修改和改变。本申请的范围仅由所附的权利要求来限制。
Claims (67)
- 一种网络切片切换的方法,应用于目标基站,其特征在于,所述方法包括:所述目标基站接收源基站发送的切换请求消息;所述目标基站确定是否进行切片重映射。
- 根据权利要求1所述的方法,其特征在于,所述目标基站确定是否进行切片重映射包括:根据第一切片信息,所述目标基站确定是否进行切片重映射。
- 根据权利要求2所述的方法,其特征在于,所述目标基站确定是否进行切片重映射包括:满足第一条件时,所述目标基站确定进行切片重映射;其中,所述第一条件用于所述目标基站确定是否进行切片重映射;所述第一条件为所述目标基站根据所述第一切片信息确定。
- 根据权利要求1至3任一权利要求所述的方法,其特征在于,所述目标基站确定是否进行切片重映射包括:根据第一切片信息确定满足第一条件时,若所述目标基站支持的切片与请求进行切换的终端设备需求切换的切片不同,所述目标基站确定进行切片重映射。
- 根据权利要求2至4任一权利要求所述的方法,其特征在于,所述第一切片信息包括以下至少一种:所述目标基站的切片支持能力;所述源基站支持的切片;所述终端设备当前在所述源基站建立的分组数据单元PDU会话对应的切片;所述目标基站支持的切片;原PDU会话对应的切片对应的业务;原PDU会话对应的切片归属的组;对应所述目标基站的默认切片是否支持的指示;需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话和/或切片是否为优先保证的业务和/或切片。
- 根据权利要求5所述的方法,其特征在于,所述第一条件包括以下至少一种:所述目标基站具备切片支持能力,所述切片支持能力包括重映射能力;所述目标基站不支持所述源基站请求的PDU会话对应的切片,但所述目标基站支持默认切片;请求切换的所述终端设备在源基站建立的PDU会话对应的切片与所述目标基站支持的切片的切片业务类型域相同,但切片区分不同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务相同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是属于同一个切片组;需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
- 根据权利要求1至6任一权利要求所述的方法,其特征在于,所述方法还包括:进行所述切片重映射。
- 根据权利要求7所述的方法,其特征在于,所述进行所述切片重映射,包括:将原PDU会话与用户面承载DRB的映射关系,修改为新PDU会话与DRB的映射关系。
- 根据权利要求8所述的方法,其特征在于,所述将原PDU会话与用户面承载DRB的映射关系,修改为新PDU会话与DRB的映射关系,具体包括以下至少之一:所述目标基站发送所述切换请求消息的肯定确认ACK给所述源基站,所述ACK包括新PDU会话信息,和/或,通知对应需要被重映射的PDU会话的DRB的数据转发通道,所述新PDU会话信息包括以下至少一种:重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系;所述源基站通过所述数据转发通道,将对应原PDU会话的数据转发到所述目标基站,并向请求进行切换的所述终端设备发送切换命令;所述目标基站向接入和移动性管理实体AMF发送路径切换请求消息;所述AMF向会话管理实体SMF发送切片管理功能更新会话管理上下文请求,所述切片管理功能更新会话管理上下文请求包括PDU会话重映射列表,PDU会话重映射指示和重映射理由至少之一;所述SMF触发PDU会话修改和/或建立过程,修改现有PDU会话和/或添加新PDU会话;所述SMF向用户平面实体UPF发送会话修改请求;所述UPF向所述SMF发送会话修改响应;所述UPF发送结束标记到所述源基站;所述SMF向所述AMF发送切片管理功能更新会话管理上下文响应,用于指示PDU会话列表重映射成功;所述目标基站接收所述AMF发送的路径切换请求消息肯定确认,所述路径切换请求消息肯定确认包括重映射会话列表;所述目标基站在切换成功后,发送释放资源给所述源基站。
- 根据权利要求1至9任一权利要求所述的方法,其特征在于,所述方法还包括:所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求10所述的方法,其特征在于,所述源基站确定是否向所述目标基站发送所述切换请求消息包括:根据第二切片信息,所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求11所述的方法,其特征在于,所述源基站确定是否向所述目标基站发送所述切换请求消息包括:满足第二条件时,所述源基站向所述目标基站发送所述切换请求消息;其中,所述第二条件用于确定所述源基站是否向所述目标基站发送所述切换请求消息;所述第二条件为所述源基站根据所述第二切片信息确定。
- 根据权利要求11或12所述的方法,其特征在于,所述第二切片信息包括以下至少一种:所述目标基站的切片支持能力;所述源基站支持的切片;所述终端设备当前在所述源基站建立的PDU会话对应的切片;所述目标基站支持的切片;原PDU会话对应的切片对应的业务;原PDU会话对应的切片归属的组;对应所述目标基站的默认切片是否支持的指示。
- 根据权利要求13所述的方法,其特征在于,所述第二条件包括以下至少一种:所述目标基站具备切片支持能力;具有对应所述目标基站的默认切片支持的指示;所述源基站支持的切片与所述目标基站支持的切片相同,或者是所述目标基站支持的切片的子集;所述终端设备当前在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片相同,或者是所述目标基站支持的切片的子集,或者与所述目标基站支持的切片的对应的业务属于一个业务组;所述源基站支持的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片的对应的业务的子集,或者与所述目标基站支持的切片的对应的业务属于一个业务组;所述终端设备当前在所述源基站建立的PDU会话对应的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片对应的业务的子集;所述源基站支持的切片与所述目标基站支持的切片归属于同一个组;终端设备当前在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片归属于同一个组。
- 根据权利要求10至14任一权利要求所述的方法,其特征在于,所述切换请求消息包括:重映射信息,所述重映射信息包括以下至少一种:重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系。
- 根据权利要求1至15任一权利要求所述的方法,其特征在于,所述方法还包括:所述源基站根据第三切片信息,确定切换请求结果;其中,所述第三切片信息用于确定所述切换请求结果;根据所述切换请求结果,确定是否向所述目标基站发送切换请求消息,所述切换请求消息包含所述切换请求结果。
- 根据权利要求16所述的方法,其特征在于,所述第三切片信息包括以下至少一种:所述目标基站的切片支持能力;所述源基站支持的切片;所述终端设备当前在所述源基站建立的PDU会话对应的切片;所述目标基站支持的切片;原PDU会话对应的切片对应的业务;原PDU会话对应的切片归属的组;对应所述目标基站的默认切片是否支持的指示;需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话或切片是否为优先保证的业务和/或切片。
- 根据权利要求17所述的方法,其特征在于,所述切换请求消息结果包括以下情况的其中一种:发送所述切换请求消息,其中携带切片重映射指示;发送所述切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;不发送所述切换请求消息。
- 根据权利要求18所述的方法,其特征在于,所述根据所述切换请求结果,确定向所述目标基站发送所述切换请求消息包括:当满足第三条件时,所述切换请求结果为发送所述切换请求消息,其中携带切片重映射指示;所述第三条件用于确定所述源基站是否向所述目标基站发送携带切片重映射指示的所述切换请求消息;当未满足所述第三条件,和/或,满足第四条件时,所述切换请求结果为发送所述切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;所述非切片重映射指示用于当所述目标基站接收所述不进行切片重映射的切换请求消息时,所述目标基站确定进行切换但不进行切片重映射;所述第四条件用于确定所述源基站是否向所述目标基站发送不携带切片重映射指示,或者,携带非切片重映射指示的切换请求消息;当未满足所述第三条件和/或,未满足所述第四条件时,所述切换请求结果为不发送所述切换请求消息。
- 根据权利要求19所述的方法,其特征在于,所述第三条件包括以下至少一种:所述目标基站具备切片支持能力;具有对应所述目标基站的默认切片支持的指示;所述源基站支持的切片与所述目标基站支持的切片相同,或者是目标基站支持的切片的子集;所述终端设备当前在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片相同,或者是所述目标基站支持的切片的子集;所述源基站支持的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片的对应的业务的子集;所述终端设备当前在所述源基站建立的PDU会话对应的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片对应的业务的子集;所述源基站支持的切片与所述目标基站支持的切片归属于同一个组;需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
- 根据权利要求19所述的方法,其特征在于,所述第四条件包括以下至少一种:所述目标基站不支持切片;所述终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同;需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片;需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示。
- 根据权利要求21所述的方法,其特征在于,所述需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片,和/或,需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示,还包括:所述终端设备当前在源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同;和/或,所述终端设备当前在源基站建立的PDU会话对应的切片对应业务与所述目标基站支持的切片对应的业务不同。
- 根据权利要求1至22任一权利要求所述的方法,其特征在于,所述目标基站确定是否进行切片重映射包括:满足第五条件时,所述目标基站确定进行切片重映射;其中,所述第五条件用于 所述目标基站确定是否进行切片重映射。
- 根据权利要求23所述的方法,其特征在于,所述第五条件包括以下至少一种:无条件;所述目标基站支持的切片与请求切换的所述终端设备需求切换的切片不同;所述目标基站具备切片支持能力,所述切片支持能力包括重映射能力;所述目标基站不支持所述源基站请求的PDU会话对应的切片,但所述目标基站支持默认切片;请求切换的所述终端设备在源基站建立的PDU会话对应的切片与所述目标基站支持的切片的切片业务类型域相同,但切片区分不同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务相同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是属于同一个切片组。
- 根据权利要求1至24任一权利要求所述的方法,其特征在于,所述切片由单一网络切片选择辅助信息S-NSSAI和网络切片标识NSID至少之一标识。
- 一种网络切片切换的方法,应用于源基站,其特征在于,所述方法包括:所述源基站向所述目标基站发送切换请求消息;其中,所述切换请求消息用于当所述目标基站接收所述切换请求消息时,所述目标基站确定是否进行切片重映射;所述源基站接收所述目标基站反馈的切换请求消息的肯定确认,所述切换请求消息的肯定确认包括新分组数据单元PDU会话信息,和/或,通知对应需要被重映射的PDU会话的用户面承载DRB的数据转发通道。
- 根据权利要求26所述的方法,其特征在于,所述源基站向所述目标基站发送切换请求消息步骤之前,所述方法还包括:所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求27所述的方法,其特征在于,所述源基站确定是否向所述目标基站发送所述切换请求消息,包括:根据第二切片信息,所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求28所述的方法,其特征在于,所述源基站确定是否向所述目标基站发送所述切换请求消息,包括:满足第二条件时,所述源基站向所述目标基站发送所述切换请求消息;其中,所述第二条件用于确定所述源基站是否向所述目标基站发送所述切换请求消息;所述第二条件为所述源基站根据所述第二切片信息确定。
- 根据权利要求26至29任一权利要求所述的方法,其特征在于,所述源基站确定是否向所述目标基站发送所述切换请求消息包括:所述源基站根据第三切片信息,确定切换请求结果;其中,所述第三切片信息用于确定所述切换请求结果;根据所述切换请求结果,确定是否向所述目标基站发送切换请求消息,所述切换请求消息包含所述切换请求结果。
- 根据权利要求26至30任一权利要求所述的方法,其特征在于,所述源基站接收所述目标基站反馈的切换请求消息的肯定确认步骤之后,所述方法包括:通过所述数据转发通道,将对应原PDU会话的数据转发到所述目标基站;向请求进行切换的终端设备发送切换命令;接收用户平面实体UPF发送的结束标记;接收所述目标基站发送的释放资源。
- 一种网络切片切换的装置,其特征在于,所述装置包括:接收模块,用于所述目标基站接收源基站发送的切换请求消息;确定模块,用于所述目标基站确定是否进行切片重映射。
- 根据权利要求32所述的装置,其特征在于,所述确定模块还用于:根据第一切片信息,所述目标基站确定是否进行切片重映射。
- 根据权利要求33所述的装置,其特征在于,所述确定模块还用于:满足第一条件时,所述目标基站确定进行切片重映射;其中,所述第一条件用于所述目标基站确定是否进行切片重映射;所述第一条件为所述目标基站根据所述第一切片信息确定。
- 根据权利要求32至34任一权利要求所述的装置,其特征在于,所述确定模块还用于:根据第一切片信息确定满足第一条件时,若所述目标基站支持的切片与请求进行切换的终端设备需求切换的切片不同,所述目标基站确定进行切片重映射。
- 根据权利要求33至35任一权利要求所述的装置,其特征在于,所述第一切片信息包括以下至少一种:所述目标基站的切片支持能力;所述源基站支持的切片;所述终端设备当前在所述源基站建立的分组数据单元PDU会话对应的切片;所述目标基站支持的切片;原PDU会话对应的切片对应的业务;原PDU会话对应的切片归属的组;对应所述目标基站的默认切片是否支持的指示;需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话和/或切片是否为优先保证的业务和/或切片。
- 根据权利要求36所述的装置,其特征在于,所述第一条件包括以下至少一种:所述目标基站具备切片支持能力,所述切片支持能力包括重映射能力;所述目标基站不支持所述源基站请求的PDU会话对应的切片,但所述目标基站支持默认切片;请求切换的所述终端设备在源基站建立的PDU会话对应的切片与所述目标基站支持的切片的切片业务类型域相同,但切片区分不同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务相同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与目标基站支持的切片不同,但是属于同一个切片组;需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
- 根据权利要求32至37任一权利要求所述的装置,其特征在于,所述装置还包括:重映射模块,用于进行所述切片重映射。
- 根据权利要求38所述的装置,其特征在于,所述重映射模块还用于:将原PDU会话与用户面承载DRB的映射关系,修改为新PDU会话与DRB的映射关系。
- 根据权利要求39所述的装置,其特征在于,所述重映射模块还用于:所述目标基站发送所述切换请求消息的肯定确认ACK给所述源基站,所述ACK包括新PDU会话信息,和/或,通知对应需要被重映射的PDU会话的DRB的数据转发通道,所述新PDU会话信息包括以下至少一种:重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系;所述源基站通过所述数据转发通道,将对应原PDU会话的数据转发到所述目标基站,并向请求进行切换的所述终端设备发送切换命令;所述目标基站向接入和移动性管理实体AMF发送路径切换请求消息;所述AMF向会话管理实体SMF发送切片管理功能更新会话管理上下文请求,所述切片管理功能更新会话管理上下文请求包括PDU会话重映射列表,PDU会话重映射指示和重映射理由至少之一;所述SMF触发PDU会话修改和/或建立过程,修改现有PDU会话和/或添加新PDU会话;所述SMF向用户平面实体UPF发送会话修改请求;所述UPF向所述SMF发送会话修改响应;所述UPF发送结束标记到所述源基站;所述SMF向所述AMF发送切片管理功能更新会话管理上下文响应,用于指示PDU会话列表重映射成功;所述目标基站接收所述AMF发送的路径切换请求消息肯定确认,所述路径切换请求消息肯定确认包括重映射会话列表;所述目标基站在切换成功后,发送释放资源给所述源基站。
- 根据权利要求32至40任一权利要求所述的装置,其特征在于,所述装置还包括:发送确定模块,用于所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求41所述的装置,其特征在于,所述发送确定模块还用于:根据第二切片信息,所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求42所述的装置,其特征在于,所述发送确定模块还用于:满足第二条件时,所述源基站向所述目标基站发送所述切换请求消息;其中,所述第二条件用于确定所述源基站是否向所述目标基站发送所述切换请求消息;所述第二条件为所述源基站根据所述第二切片信息确定。
- 根据权利要求42或43所述的装置,其特征在于,所述第二切片信息包括以下至少一种:所述目标基站的切片支持能力;所述源基站支持的切片;所述终端设备当前在所述源基站建立的PDU会话对应的切片;所述目标基站支持的切片;原PDU会话对应的切片对应的业务;原PDU会话对应的切片归属的组;对应所述目标基站的默认切片是否支持的指示。
- 根据权利要求44所述的装置,其特征在于,所述第二条件包括以下至少一种:所述目标基站具备切片支持能力;具有对应所述目标基站的默认切片支持的指示;所述源基站支持的切片与所述目标基站支持的切片相同,或者是所述目标基站支持的切片的子集;所述终端设备当前在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片相同,或者是所述目标基站支持的切片的子集,或者与所述目标基站支持的切片的对应的业务属于一个业务组;所述源基站支持的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片的对应的业务的子集,或者与所述目标基站支持的切片的对应的业务属于一个业务组;所述终端设备当前在所述源基站建立的PDU会话对应的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片对应的业务的子集;所述源基站支持的切片与所述目标基站支持的切片归属于同一个组;终端设备当前在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片归属于同一个组。
- 根据权利要求41至45任一权利要求所述的装置,其特征在于,所述切换请求消息包括:重映射信息,所述重映射信息包括以下至少一种:重映射指示;原PDU会话标识;原PDU会话对应的切片;新PDU会话对应的切片;新PDU会话标识;原PDU会话与DRB的映射关系;新PDU会话与DRB的映射关系。
- 根据权利要求32至46任一权利要求所述的装置,其特征在于,所述发送确定模块还用于:所述源基站根据第三切片信息,确定切换请求结果;其中,所述第三切片信息用于确定所述切换请求结果;根据所述切换请求结果,确定是否向所述目标基站发送的切换请求消息,所述切换请求消息包含所述切换请求结果。
- 根据权利要求47所述的装置,其特征在于,所述第三切片信息包括以下至少一种:所述目标基站的切片支持能力;所述源基站支持的切片;所述终端设备当前在所述源基站建立的PDU会话对应的切片;所述目标基站支持的切片;原PDU会话对应的切片对应的业务;原PDU会话对应的切片归属的组;对应所述目标基站的默认切片是否支持的指示;需要切换的PDU会话和/或切片是否具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话或切片是否为优先保证的业务和/或切片。
- 根据权利要求48所述的装置,其特征在于,所述切换请求消息结果包括以下情况的其中一种:发送所述切换请求消息,其中携带切片重映射指示;发送所述切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;不发送所述切换请求消息。
- 根据权利要求49所述的装置,其特征在于,所述发送确定模块还用于:当满足第三条件时,所述切换请求结果为发送所述切换请求消息,其中携带切片 重映射指示;所述第三条件用于确定所述源基站是否向所述目标基站发送携带切片重映射指示的所述切换请求消息;当未满足所述第三条件,和/或,满足第四条件时,所述切换请求结果为发送所述切换请求消息,其中不携带切片重映射指示,或者,携带非切片重映射指示;所述非切片重映射指示用于当所述目标基站接收所述不进行切片重映射的切换请求消息时,所述目标基站确定进行切换但不进行切片重映射;所述第四条件用于确定所述源基站是否向所述目标基站发送不携带切片重映射指示,或者,携带非切片重映射指示的切换请求消息;当未满足所述第三条件和/或,未满足所述第四条件时,所述切换请求结果为不发送所述切换请求消息。
- 根据权利要求50所述的装置,其特征在于,所述第三条件包括以下至少一种:所述目标基站具备切片支持能力;具有对应所述目标基站的默认切片支持的指示;所述源基站支持的切片与所述目标基站支持的切片相同,或者是目标基站支持的切片的子集;所述终端设备当前在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片相同,或者是所述目标基站支持的切片的子集;所述源基站支持的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片的对应的业务的子集;所述终端设备当前在所述源基站建立的PDU会话对应的切片对应的业务与所述目标基站支持的切片对应的业务相同,或者是所述目标基站支持的切片对应的业务的子集;所述源基站支持的切片与所述目标基站支持的切片归属于同一个组;需要切换的PDU会话和/或切片具有切换业务连续性的要求和/或指示;需要切换但目标不支持的PDU会话和/或切片为优先保证的业务和/或切片。
- 根据权利要求50所述的装置,其特征在于,所述第四条件包括以下至少一种:所述目标基站不支持切片;所述终端设备当前在源基站建立的PDU会话对应的切片与目标基站支持的切片相同;需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片;需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示。
- 根据权利要求52所述的装置,其特征在于,所述需要切换但目标不支持的PDU会话和/或切片不是需要优先保证的业务和/或切片,和/或,需要切换的PDU会话和/或切片不具有切换业务连续性的要求和/或指示,包括:所述终端设备当前在源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同;和/或,所述终端设备当前在源基站建立的PDU会话对应的切片对应业务与所述目标基站支持的切片对应的业务不同。
- 根据权利要求32至53任一权利要求所述的装置,其特征在于,所述确定模块还用于:满足第五条件时,所述目标基站确定进行切片重映射;其中,所述第五条件用于所述目标基站确定是否进行切片重映射。
- 根据权利要求54所述的装置,其特征在于,所述第五条件包括以下至少一种:无条件;所述目标基站支持的切片与请求切换的所述终端设备需求切换的切片不同;所述目标基站具备切片支持能力,所述切片支持能力包括重映射能力;所述目标基站不支持所述源基站请求的PDU会话对应的切片,但所述目标基站支持默认切片;请求切换的所述终端设备在源基站建立的PDU会话对应的切片与所述目标基站支持的切片的切片业务类型域相同,但切片区分不同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务相同;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是切片对应的业务属于同一个业务组;请求切换的所述终端设备在所述源基站建立的PDU会话对应的切片与所述目标基站支持的切片不同,但是属于同一个切片组。
- 根据权利要求32至55任一权利要求所述的装置,其特征在于,所述切片由单一网络切片选择辅助信息S-NSSAI和网络切片标识NSID至少之一标识。
- 一种网络切片切换的装置,其特征在于,所述装置包括:发送模块,用于所述源基站向所述目标基站发送切换请求消息;其中,所述切换请求消息用于当所述目标基站接收所述切换请求消息时,所述目标基站确定是否进行切片重映射;接收模块,用于所述源基站接收所述目标基站反馈的切换请求消息的肯定确认,所述切换请求消息的肯定确认包括新分组数据单元PDU会话信息,和/或,通知对应需要被重映射的PDU会话的用户面承载DRB的数据转发通道。
- 根据权利要求57所述的装置,其特征在于,所述装置还包括:确定模块,用于所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求58所述的装置,其特征在于,所述确定模块还用于:根据第二切片信息,所述源基站确定是否向所述目标基站发送所述切换请求消息。
- 根据权利要求59所述的装置,其特征在于,所述确定模块还用于:满足第二条件时,所述源基站向所述目标基站发送所述切换请求消息;其中,所述第二条件用于确定所述源基站是否向所述目标基站发送所述切换请求消息;所述第二条件为所述源基站根据所述第二切片信息确定。
- 根据权利要求57至60任一权利要求所述的装置,其特征在于,所述确定模块还用于:所述源基站根据第三切片信息,确定切换请求结果;其中,所述第三切片信息用于确定切换请求结果;根据所述切换请求结果,确定向所述目标基站发送切换请求消息,所述切换请求消息包含所述切换请求结果。
- 根据权利要求57至61任一权利要求所述的装置,其特征在于,所述发送模块还用于:通过所述数据转发通道,将对应原PDU会话的数据转发到所述目标基站;向请求进行切换的终端设备发送切换命令;所述接收模块还用于:接收用户平面实体UPF发送的结束标记;接收所述目标基站发送的释放资源。
- 一种网络设备,所述网络设备包括:处理器,存储器,其特征在于,所述存储器上存储可在所述处理器上运行的程序,所述处理器执行所述程序时,实现上述权利 要求1至31任一项所述的网络切片切换的方法。
- 一种计算机可读存储介质,其特征在于,其存储有计算机程序,其中,所述计算机程序被执行时实现如权利要求1至31任一项所述的网络切片切换的方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品存储于非瞬时性计算机可读存储介质,所述计算机程序被执行时实现如权利要求1至31任一项所述的网络切片切换的方法。
- 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,安装有所述芯片的设备执行如权利要求1至31任一项所述的网络切片切换的方法。
- 一种计算机程序,其特征在于,所述计算机程序被执行时实现如权利要求1至31任一项所述的网络切片切换的方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/083253 WO2021196171A1 (zh) | 2020-04-03 | 2020-04-03 | 网络切片切换的方法、装置及其设备 |
| EP20928303.5A EP4132090B1 (en) | 2020-04-03 | 2020-04-03 | Network slice handover method and apparatus |
| CN202080098790.5A CN115336321A (zh) | 2020-04-03 | 2020-04-03 | 网络切片切换的方法、装置及其设备 |
| US17/952,610 US20230014464A1 (en) | 2020-04-03 | 2022-09-26 | Method for network slice handover and network device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/083253 WO2021196171A1 (zh) | 2020-04-03 | 2020-04-03 | 网络切片切换的方法、装置及其设备 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/952,610 Continuation US20230014464A1 (en) | 2020-04-03 | 2022-09-26 | Method for network slice handover and network device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021196171A1 true WO2021196171A1 (zh) | 2021-10-07 |
Family
ID=77927338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2020/083253 Ceased WO2021196171A1 (zh) | 2020-04-03 | 2020-04-03 | 网络切片切换的方法、装置及其设备 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230014464A1 (zh) |
| EP (1) | EP4132090B1 (zh) |
| CN (1) | CN115336321A (zh) |
| WO (1) | WO2021196171A1 (zh) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021207881A1 (zh) * | 2020-04-13 | 2021-10-21 | Oppo广东移动通信有限公司 | 切片处理方法、装置、存储介质和处理器 |
| US11736906B2 (en) * | 2020-08-06 | 2023-08-22 | Samsung Electronics Co., Ltd. | Method and system for MBS switching and continuity in 5G wireless network |
| US11871285B2 (en) * | 2020-09-24 | 2024-01-09 | Electronics And Telecommunications Research Institute | Handover processing method based slice and device for performing the method |
| US20240259887A1 (en) * | 2021-07-27 | 2024-08-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods for controlling a service session handover between network slices, network nodes and a communications device implementing the methods in a communications network |
| KR20240108397A (ko) * | 2021-11-19 | 2024-07-09 | 퀄컴 인코포레이티드 | 다중 네트워크 슬라이스 서비스를 사용하는 무선 통신 |
| CN120282153B (zh) * | 2025-06-10 | 2025-08-19 | 国网湖北省电力有限公司信息通信公司 | 一种基于5g切片的电站ftu环网建立方法和系统 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018135992A1 (en) * | 2017-01-18 | 2018-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Systems and methods of mapping a network slice |
| CN108924884A (zh) * | 2017-04-04 | 2018-11-30 | 华为技术有限公司 | 通信方法及通信设备 |
| CN110419240A (zh) * | 2017-03-24 | 2019-11-05 | 华为技术有限公司 | 切片兼容的切换控制设备和方法 |
| CN110838927A (zh) * | 2018-08-15 | 2020-02-25 | 中国移动通信有限公司研究院 | 切片映射重映射方法及接入网网元 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375017A (zh) * | 2016-01-16 | 2022-04-19 | 华为技术有限公司 | 一种切换的方法、基站及终端设备 |
| US10321371B2 (en) * | 2016-04-11 | 2019-06-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for communication over network slices in wireless communication systems |
| WO2018084593A1 (ko) * | 2016-11-03 | 2018-05-11 | 주식회사 케이티 | 네트워크 슬라이스 기반 데이터 처리 방법 및 그 장치 |
| KR102108871B1 (ko) * | 2016-11-03 | 2020-05-12 | 주식회사 케이티 | 네트워크 슬라이스 기반 데이터 처리 방법 및 그 장치 |
| CN108566309B (zh) * | 2017-01-26 | 2019-08-06 | 华为技术有限公司 | 一种接入目标小区的方法以及设备 |
| WO2018143769A1 (en) * | 2017-02-06 | 2018-08-09 | Samsung Electronics Co., Ltd. | Method and device for controlling data transmission, method and apparatus for controlling continuity of ue |
| EP3603181B1 (en) * | 2017-03-22 | 2024-10-30 | Motorola Mobility LLC | A condition for handover |
| CN108632927B (zh) * | 2017-03-24 | 2021-08-13 | 华为技术有限公司 | 移动网络切换方法和通信装置 |
| CN117545105A (zh) * | 2017-05-05 | 2024-02-09 | 华为技术有限公司 | 一种失败处理方法、切换方法及终端设备、网络设备 |
| CN109819530B (zh) * | 2017-11-21 | 2023-12-08 | 华为技术有限公司 | 一种通信方法及装置 |
| US11071025B2 (en) * | 2018-06-29 | 2021-07-20 | FG Innovation Company Limited | Cell handover with minimum mobility interruption |
| CN118019147A (zh) * | 2018-11-01 | 2024-05-10 | 北京三星通信技术研究有限公司 | 用于会话建立的方法、会话管理功能实体、基站和存储介质 |
| CN114885385B (zh) * | 2018-11-19 | 2025-03-14 | 华为技术有限公司 | 一种通信方法及装置 |
| EP3925287B1 (en) * | 2019-02-11 | 2024-10-16 | Nokia Technologies Oy | Enhanced mobility in cellular deployments with network slicing |
| CN118612801A (zh) * | 2019-07-23 | 2024-09-06 | 北京三星通信技术研究有限公司 | 一种支持在移动通信网络中切换的方法 |
| CN114868426B (zh) * | 2020-01-23 | 2024-06-11 | 华为技术有限公司 | 一种网络切片重定向的方法和装置 |
| CN113498129B (zh) * | 2020-04-02 | 2023-03-24 | 维沃移动通信有限公司 | 小区切换方法、小区切换处理方法、终端及网络设备 |
-
2020
- 2020-04-03 EP EP20928303.5A patent/EP4132090B1/en active Active
- 2020-04-03 CN CN202080098790.5A patent/CN115336321A/zh active Pending
- 2020-04-03 WO PCT/CN2020/083253 patent/WO2021196171A1/zh not_active Ceased
-
2022
- 2022-09-26 US US17/952,610 patent/US20230014464A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018135992A1 (en) * | 2017-01-18 | 2018-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Systems and methods of mapping a network slice |
| CN110419240A (zh) * | 2017-03-24 | 2019-11-05 | 华为技术有限公司 | 切片兼容的切换控制设备和方法 |
| CN108924884A (zh) * | 2017-04-04 | 2018-11-30 | 华为技术有限公司 | 通信方法及通信设备 |
| CN110838927A (zh) * | 2018-08-15 | 2020-02-25 | 中国移动通信有限公司研究院 | 切片映射重映射方法及接入网网元 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4132090A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4132090B1 (en) | 2024-11-06 |
| US20230014464A1 (en) | 2023-01-19 |
| EP4132090A4 (en) | 2023-08-23 |
| CN115336321A (zh) | 2022-11-11 |
| EP4132090A1 (en) | 2023-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021196171A1 (zh) | 网络切片切换的方法、装置及其设备 | |
| US11463947B2 (en) | Communication method, access network device, and terminal device to facilitate communication in a network slice architecture | |
| US11533138B2 (en) | Method, device, and storage medium for processing data flow | |
| JP7016372B2 (ja) | ワイヤレス通信システムにおけるユーザプレーンリロケーション技法 | |
| CN113411850B (zh) | 切换方法和设备 | |
| CN107734573B (zh) | 切换方法、基站及通信系统 | |
| US12598487B2 (en) | Slicing method and apparatus, storage medium, and processor | |
| US10952271B2 (en) | Radio communication system, radio station, radio terminal, network apparatus, bearer control method, and computer readable medium | |
| CN109673026B (zh) | 数据转发方法、装置和系统 | |
| CN114600508A (zh) | Iab节点双连接建立的方法和通信装置 | |
| WO2019223690A1 (zh) | 一种通信方法及装置 | |
| JP2020505816A (ja) | 通信方法、アクセスネットワークデバイス、コアネットワークデバイス及びユーザ装置 | |
| KR20160101017A (ko) | 듀얼 접속성에 대한 서빙 게이트웨이 리로케이션 및 보조 노드 적격 | |
| EP3817451B1 (en) | Handover method and apparatus | |
| US11419027B2 (en) | User plane link establishment method, base station, and mobility management device | |
| CN110366214A (zh) | 一种语音业务的网络切换方法及装置 | |
| CN118120287A (zh) | PSCell改变中的测量配置的源节点和目标节点协调 | |
| EP3986084A1 (en) | Switching between new radio dual connectivity and carrier aggregation in cellular networks | |
| CN111757357B (zh) | 重定向方法、网络及终端设备、通信系统及可读存储介质 | |
| CN102006640B (zh) | 一种lte系统中的切换方法和装置 | |
| CN112135320A (zh) | 用于传输业务报文的方法和装置 | |
| US20240155450A1 (en) | Fallback Conditional Handover Configuration with Single Connectivity | |
| US20190082482A1 (en) | Resource access method, apparatus, and system | |
| CN114390623A (zh) | 一种支持切换的方法 | |
| CN116963197A (zh) | 信息处理方法、装置、设备及存储介质 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20928303 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2020928303 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2020928303 Country of ref document: EP Effective date: 20221103 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |