WO2021249474A1 - 承载配置方法、装置及终端 - Google Patents

承载配置方法、装置及终端 Download PDF

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Publication number
WO2021249474A1
WO2021249474A1 PCT/CN2021/099350 CN2021099350W WO2021249474A1 WO 2021249474 A1 WO2021249474 A1 WO 2021249474A1 CN 2021099350 W CN2021099350 W CN 2021099350W WO 2021249474 A1 WO2021249474 A1 WO 2021249474A1
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WIPO (PCT)
Prior art keywords
terminal
reconfiguration message
bearer
rlc
configuration information
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PCT/CN2021/099350
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English (en)
French (fr)
Inventor
刘佳敏
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to PH1/2022/553239A priority Critical patent/PH12022553239A1/en
Priority to KR1020227044229A priority patent/KR20230011404A/ko
Priority to JP2022574805A priority patent/JP7535133B2/ja
Priority to EP21822755.1A priority patent/EP4167666A4/en
Publication of WO2021249474A1 publication Critical patent/WO2021249474A1/zh
Priority to US18/071,672 priority patent/US20230093763A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/0875—Load balancing or load distribution to or through Device to Device [D2D] links, e.g. direct-mode links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/09—Management thereof
    • H04W28/0958—Management thereof based on metrics or performance parameters
    • H04W28/0967—Quality of Service [QoS] parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a bearer configuration method, device and terminal.
  • LTE Long Term Evolution
  • UE terminal user equipment
  • LTE sidelink is suitable for specific public safety affairs (such as emergency communication in fire sites or disaster sites such as earthquakes), or vehicle to everything (V2X) communications.
  • IoV communications include various services, such as basic safety communications, advanced (autonomous) driving, formation, sensor expansion, and so on. Since LTE sidelink only supports broadcast communications, it is mainly used for basic security communications. Other advanced V2X services that have strict Quality of Service (QoS) requirements in terms of delay and reliability will pass through the New Radio (New Radio, NR) sidelink support.
  • QoS Quality of Service
  • the 5G NR system can be used in working frequency bands above 6GHz that LTE does not support, and supports larger working bandwidth. However, the current version of the NR system only supports the interface between the base station and the terminal, and does not yet support the Sidelink interface for direct communication between the terminals.
  • the Sidelink link interface can also be called the PC5 interface.
  • the current sidelink transmission is mainly divided into broadcast (broadcast), multicast (groupcast), unicast (unicast) several transmission forms.
  • Unicast as its name implies, is one-to-one transmission.
  • Multicast is one-to-many transmission. Broadcasting is also one-to-many transmission, but broadcasting does not have the concept of terminals belonging to the same group.
  • Sidelink unicast and multicast communications support the physical layer hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback mechanism.
  • Hybrid Automatic Repeat reQuest Hybrid Automatic Repeat reQuest, HARQ
  • the resource allocation modes of Sidelink terminals are divided into two categories:
  • the network side equipment (base station) controls and allocates resources for each terminal;
  • Each terminal independently selects resources.
  • the remote terminal passes through the Sidelink link with the relay terminal (relay UE), and the relay terminal connects its Data is forwarded to the target terminal.
  • the relay terminal plays the role of data transfer.
  • terminal 1 and terminal 2 communicate directly, and configure through the PC5 radio resource control (Radio Resource Control, RRC) process to establish a side link radio bearer ( Sidelink Radio Bearer (SLRB) and Radio Link Control Bearer (RLC bearer), so that data between terminal 1 and terminal 2 can be transmitted through a one-hop PC5 interface.
  • RRC Radio Resource Control
  • the purpose of the embodiments of the present application is to provide a bearer configuration method, device, and terminal, which can solve the problem of bearer configuration in the UE-to-UE sidelink relay scenario that has not been solved in the prior art.
  • an embodiment of the present application provides a bearer configuration method, which is applied to a first terminal, and the method includes:
  • the second reconfiguration message is sent to the second terminal, or the relay terminal sends the second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration information carried by the second RLC.
  • an embodiment of the present application provides a bearer configuration method, which is applied to a relay terminal, and the method includes:
  • the second reconfiguration message is sent to the second terminal, or the first terminal sends the second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration information carried by the second RLC.
  • an embodiment of the present application provides a bearer configuration method applied to a second terminal, and the method includes:
  • the second reconfiguration message carries configuration information carried by the second RLC.
  • an embodiment of the present application provides a bearer configuration device, which is applied to a first terminal, and the device includes:
  • a first sending module configured to send a first reconfiguration message to the relay terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC;
  • the second sending module is configured to send a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal; the second reconfiguration message carries the second RLC bearer Configuration information.
  • an embodiment of the present application provides a bearer configuration device, which is applied to a relay terminal, and the device includes:
  • a first receiving module configured to receive a first reconfiguration message sent by a first terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC;
  • the third sending module is configured to send a second reconfiguration message to the second terminal, or the first terminal sends a second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration information carried by the second RLC .
  • an embodiment of the present application provides a bearer configuration device, which is applied to a second terminal, and the device includes:
  • the second receiving module is configured to receive a second reconfiguration message sent by the first terminal or the relay terminal; the second reconfiguration message carries configuration information carried by the second RLC.
  • a terminal in a seventh aspect, includes a processor, a memory, and a program or instruction that is stored on the memory and can run on the processor.
  • the program or instruction is executed by the processor, The steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented, or the steps of the method described in the third aspect are implemented.
  • a readable storage medium is provided, and a program or instruction is stored on the readable storage medium.
  • the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or The steps of the method described in the second aspect, or the steps of implementing the method described in the third aspect.
  • a chip in a ninth aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the first terminal sends the first reconfiguration message to the relay terminal
  • the second terminal sends the second reconfiguration message to the second terminal through the first terminal
  • the relay terminal sends the second reconfiguration message to the second terminal.
  • the configuration message enables coordinated configuration between the first terminal, the relay terminal, and the second terminal, so as to realize the transmission of the bearer or data stream of the remote terminal to the relay terminal, and finally reach the target terminal, ensuring the remote
  • the quality of service QoS of end-terminal business ensures system efficiency while improving user experience.
  • Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application can be applied
  • FIG. 2 shows one of the step flowcharts of the bearer configuration method provided by the embodiment of the present application
  • Figure 3 shows the second step flow chart of the bearer configuration method provided by the embodiment of the present application
  • FIG. 4 shows the third step flow chart of the bearer configuration method provided by the embodiment of the present application
  • FIG. 5 shows one of the structural schematic diagrams of the bearer configuration device provided by the embodiment of the present application
  • FIG. 6 shows the second structural diagram of the bearer configuration device provided by the embodiment of the present application.
  • FIG. 7 shows the third structural diagram of the bearer configuration device provided by the embodiment of the present application.
  • FIG. 8 shows one of the schematic structural diagrams of a terminal provided by an embodiment of the present application.
  • FIG. 9 shows the second structural diagram of a terminal provided by an embodiment of the present application.
  • first and second in the specification and claims of this application are used to distinguish similar objects, but not to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the "first", “second”, etc. are distinguished
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the associated objects before and after are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of this application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies.
  • NR New Radio
  • the following description describes the New Radio (NR) system for exemplary purposes, and uses NR terminology in most of the description below, although these technologies can also be applied to applications other than NR system applications, such as the 6th generation ( 6 th Generation, 6G) communication system.
  • 6th generation 6 th Generation, 6G
  • Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application can be applied.
  • the wireless communication system includes a remote terminal 11 and a relay terminal 12.
  • the remote terminal 11 and the relay terminal 12 are both terminals.
  • the terminal may also be called a terminal device or a user terminal (User Equipment, UE).
  • the terminal may be a mobile phone, a tablet (Personal Computer), or a laptop.
  • the UE-to-UE relay scenario in the embodiment of this application corresponds to two architectures, namely the L2 architecture and the L3 architecture.
  • the L3 protocol stack (such as RRC, SDAP, PDCP, etc.) is located in the remote terminal entities of the two peers, and only the corresponding RLC bearer is used to transfer data at the relay terminal.
  • the characteristic of the L2 architecture is that the relay terminal (relay UE) does not have a complete protocol stack for its relayed data, that is, in addition to the radio link control (Radio Link Control, RLC), the media access control address (Media Access Control Address,
  • RLC Radio Link Control
  • Media Access Control Address Media Access Control Address
  • RRC Radio Resource Control
  • RRC service data adaptation protocol
  • SDAP Service Data Adaptation Protocol
  • packet data Protocol stacks such as Packet Data Convergence Protocol (PDCP) use only RLC bearers to carry and transmit data from remote terminals (remote UE).
  • PDCP Packet Data Convergence Protocol
  • the L3 protocol stack (such as RRC, SDAP, PDCP, etc.) is located in the relay terminal. That is, the characteristic of the L3 architecture is that the relay UE has a complete protocol stack, that is, in addition to the basic L2 transmission protocol stacks such as RLC, MAC, and PHY, it also has RRC, SDAP, PDCP and other protocol stacks for pairing The data of the remote terminal is carried and transmitted. It is equivalent to a complete protocol stack between the first terminal and the relay terminal, and a complete protocol stack between the relay terminal and the second terminal.
  • first terminal and the second terminal mentioned in the following embodiments of the present application may also be referred to as the first remote terminal and the second remote terminal, which are not specifically limited herein.
  • At least one embodiment of the present application provides a bearer configuration method applied to a first terminal, including:
  • Step 201 Send a first reconfiguration message to the relay terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC.
  • the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, and/or, to indicate the establishment of the RLC bearer between the second terminal and the relay terminal.
  • the first terminal If the configuration information carried by the first RLC is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, after the first terminal sends the first reconfiguration message to the relay terminal, the first terminal and the relay terminal respectively
  • the first reconfiguration message establishes the RLC bearer between the first terminal and the relay terminal; if the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, and the second terminal and The establishment of the RLC bearer between the relay terminals, the first terminal establishes the RLC bearer between the first terminal and the relay terminal according to the first reconfiguration message, and the relay terminal establishes the first terminal and the middle station according to the first reconfiguration message. Following the RLC bearer between the terminals, and establish the RLC bearer between the second terminal and the relay terminal.
  • Step 202 Send a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal; the second reconfiguration message carries configuration information carried by the second RLC.
  • the configuration information carried by the second RLC is used to indicate the establishment of the RLC bearer between the second terminal and the relay terminal; the relay terminal After sending the second reconfiguration message to the second terminal, the relay terminal and the second terminal respectively establish an RLC bearer between the relay terminal and the second terminal according to the second reconfiguration message.
  • the relay terminal since the RLC bearer between the second terminal and the relay terminal is configured by the relay terminal, it only needs to be consistent with the configuration content of the RLC bearer between the first terminal and the relay terminal.
  • the relay terminal can allocate an ID different from the RLC bearer between the first terminal and the relay terminal to the RLC bearer between the second terminal and the relay terminal, which has certain configuration flexibility.
  • the second reconfiguration message also carries first indication information, and the first indication information is used to indicate the configuration information carried by the second RLC It is used to establish the RLC bearer between the second terminal and the relay terminal.
  • the first terminal sends the second reconfiguration message to the second terminal
  • the second terminal establishes the RLC bearer between the second terminal and the relay terminal according to the second reconfiguration message; and the first terminal sends the first terminal to the relay terminal.
  • the relay terminal simultaneously establishes two RLC bearers (that is, the RLC bearer between the first terminal and the relay terminal, and the RLC bearer between the second terminal and the relay terminal) according to the first reconfiguration message.
  • the configuration information carried by the two RLCs can use the same set of configuration information or different configuration information; if the configuration information carried by the two RLCs are different configuration information, the first reconfiguration message needs to pass Directly or implicitly indicates which RLC bearer corresponds to each set of configuration information; in this case, since the RCL bearer between the second terminal and the relay terminal is configured by the first terminal, the first terminal The ID of the RLC bearer between a terminal and the relay terminal is the same as the ID of the RLC bearer between the second terminal and the relay terminal, but it saves a piece of configuration compared to the way configured by the relay terminal. Signaling.
  • the first reconfiguration message also carries configuration information of the first side link radio bearer SLRB between the first terminal and the relay terminal;
  • the second reconfiguration message also carries configuration information of the second SLRB between the second terminal and the relay terminal.
  • the PC5 RRC is established between the first terminal and the relay terminal and the corresponding SLRB and RLC bearers are established to carry and transmit data of the first terminal.
  • the PC5 RRC is also established between the second terminal and the relay terminal, and corresponding SLRB and RLC bearers are established, which are used to carry and transmit the data of the second terminal.
  • the first terminal acts as the initiator or sender and wants to transmit data with the second terminal
  • the distance between the first terminal and the second terminal is too far, the effect of direct PC5 communication is poor, so find the one in the middle
  • the relay terminal transfers the data.
  • PC5 RRC If the PC5 RRC connection has not been established between the first terminal and the relay terminal (or the second terminal and the relay terminal), the establishment of the PC5 RRC is triggered. If there is already a PC5 RRC connection between the first terminal and the relay terminal (or the second terminal and the relay terminal), the existing PC5 RRC can be directly reused, or a new PC5 RRC can be re-established. Because PC5 RRC is identified based on a pair of source L2 ID and target L2 ID, multiple PC5 RRCs can be established as long as different L2 IDs are used between two terminals.
  • the first terminal and the relay terminal adopt the same PC5 RRC; that is, the first terminal and the relay terminal (or the second terminal and the relay terminal)
  • the existing PC5 direct communication service can be managed together with the transfer service between the first terminal and the relay terminal (or the second terminal and the relay terminal), maintaining a PC5 link, which is more convenient to maintain.
  • the first terminal and the relay terminal adopt different PC5 RRC, that is, the existing PC5 directly between the first terminal and the relay terminal (or the second terminal and the relay terminal)
  • the communication service maintains a PC5 RRC
  • the first terminal needs to relay the terminal to the second terminal for independent management of the business, and maintains another PC5 RRC. Because the final transmission destination and operation of the data in different scenarios are different, separate maintenance is easier to maintain. Good to map and operate separately.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer carry identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration of the SLRB and the configuration of the RLC bearer are generally configured in two different domains, and the two sets of configurations are associated with each other through the SLRB index. That is, the SLRB configuration includes the SLRB index, and the RLC bearer configuration also carries the SLRB index.
  • the same SLRB index value corresponds to a pair of SLRB configuration and RLC bearer configuration, and a higher layer configuration of the bearer (ie SLRB configuration) and The bottom layer configuration (the configuration carried by the RLC) works together.
  • the relay terminal when the relay terminal receives the first reconfiguration message sent by the first terminal, it establishes the corresponding SLRB and RLC bearers according to the configuration, and sends a reconfiguration complete message to the first terminal. And according to these configurations, organize a new PC5 RRC message (that is, the second reconfiguration message) and send it to the second terminal to establish the SLRB and RLC bearer between the relay terminal and the second terminal.
  • the second terminal receives the second reconfiguration message, establishes the SLRB and RLC bearers according to the configuration, and sends a reconfiguration complete message to the relay terminal. At this point, the establishment of the data transmission pipeline between the first terminal and the second terminal is completed.
  • the first reconfiguration message and/or the second reconfiguration message are carried by PC5 RRC reconfiguration signaling, which is not specifically limited here.
  • the second reconfiguration message can be sent by the relay terminal to the second terminal, or can be sent by the first terminal to the second terminal; if the second reconfiguration message is sent by the relay If the terminal sends the second terminal to the second terminal, the second reconfiguration message only needs to carry the configuration information carried by the second RLC; and if the second reconfiguration message is sent by the first terminal to the second terminal, the second reconfiguration message is also Carry the configuration information of the third SLRB between the first terminal and the second terminal.
  • the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal and the establishment of the RLC bearer between the second terminal and the relay terminal.
  • the configuration information of an RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal and the establishment of the RLC bearer between the second terminal and the relay terminal.
  • One set of configuration information can also be used.
  • the configuration information (that is, the configuration information carried by the first RLC includes two sets of configuration information), which is not specifically limited here.
  • the first terminal sends PC5 RRC reconfiguration signaling (the signaling is relayed by the relay terminal and carries the configuration information of the third SLRB) to the second terminal to configure the related SLRB for the service.
  • PC5 RRC reconfiguration signaling the signaling is relayed by the relay terminal and carries the configuration information of the third SLRB
  • This configuration uses To establish an SLRB between the first terminal and the second terminal.
  • the first terminal sends PC5 RRC reconfiguration signaling to the relay terminal to configure the related RLC bearer for the service and the mapping relationship between the third SLRB and the RLC bearer.
  • This configuration is used to establish a connection between the first terminal and the relay terminal.
  • RLC bearer the signaling is relayed by the relay terminal and carries the configuration information of the third SLRB
  • the relay terminal sends PC5 RRC reconfiguration signaling to the second terminal to configure the related RLC bearer and the mapping relationship between the RLC bearer and SLRB for the service.
  • This configuration is used to establish the second terminal and the relay terminal RLC bearer between.
  • an RLC bearer needs to be established for transmitting PDCP protocol data unit (Protocol Data Unit, PDU).
  • PDU Protocol Data Unit
  • an RLC bearer also needs to be established to transmit PDCP PDUs.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer carry identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer also carry identification information of the PC5 link associated with the corresponding RLC bearer.
  • the SLRB is end-to-end, and the RLC bearer is divided into two segments, the mapping relationship between each other cannot use the traditional simultaneous configuration method, but needs to be configured with a mapping method enhanced by different signaling processes.
  • the SLRB is configured between the first terminal and the second terminal, and the SLRB index is also valid on its corresponding PC5 link 1.
  • the RLC bearer corresponds to the PC5 link 2 between the first terminal and the relay terminal, or the PC5 link 3 between the relay terminal and the second terminal, which is equivalent to the PC5 link 2 and PC5 link 3.
  • the message indicate which SLRB index of PC5 link 1 corresponds to.
  • the configuration information of the third SLRB includes: identification information of the PC5 link associated with the third SLRB, such as the identity ID of the terminals at both ends, the L2 ID of the terminals at both ends, or the link ID, etc. .
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • an embodiment of the present application also provides a bearer configuration method, which is applied to a relay terminal, and includes:
  • Step 301 Receive a first reconfiguration message sent by a first terminal, where the first reconfiguration message carries configuration information carried by a first radio link control RLC; wherein, the configuration information carried by the first RLC is used to instruct the first terminal
  • the first terminal If the configuration information carried by the first RLC is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, after the first terminal sends the first reconfiguration message to the relay terminal, the first terminal and the relay terminal respectively
  • the first reconfiguration message establishes the RLC bearer between the first terminal and the relay terminal; if the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, and the second terminal and The establishment of the RLC bearer between the relay terminals, the first terminal establishes the RLC bearer between the first terminal and the relay terminal according to the first reconfiguration message, and the relay terminal establishes the first terminal and the middle station according to the first reconfiguration message. Following the RLC bearer between the terminals, and establish the RLC bearer between the second terminal and the relay terminal.
  • Step 302 Send a second reconfiguration message to the second terminal, or the first terminal sends a second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration information carried by the second RLC.
  • the configuration information carried by the second RLC is used to indicate the establishment of the RLC bearer between the second terminal and the relay terminal; the relay terminal sends After the second terminal sends the second reconfiguration message, the relay terminal and the second terminal respectively establish an RLC bearer between the relay terminal and the second terminal according to the second reconfiguration message.
  • the relay terminal since the RLC bearer between the second terminal and the relay terminal is configured by the relay terminal, it only needs to be consistent with the configuration content of the RLC bearer between the first terminal and the relay terminal.
  • the relay terminal can allocate an ID different from the RLC bearer between the first terminal and the relay terminal to the RLC bearer between the second terminal and the relay terminal, which has certain configuration flexibility.
  • the second reconfiguration message also carries first indication information, and the configuration of the second RLC bearer is indicated through the first indication information
  • the information is used to establish the RLC bearer between the second terminal and the relay terminal.
  • the second terminal establishes the RLC bearer between the second terminal and the relay terminal according to the second reconfiguration message; and the first terminal sends the first terminal to the relay terminal.
  • the relay terminal simultaneously establishes two RLC bearers (that is, the RLC bearer between the first terminal and the relay terminal, and the RLC bearer between the second terminal and the relay terminal) according to the first reconfiguration message.
  • the configuration information carried by the two RLCs can use the same set of configuration information or different configuration information; if the configuration information carried by the two RLCs are different configuration information, the first reconfiguration message needs to pass Directly or implicitly indicates which RLC bearer corresponds to each set of configuration information; in this case, since the RCL bearer between the second terminal and the relay terminal is configured by the first terminal, the first terminal The ID of the RLC bearer between a terminal and the relay terminal is the same as the ID of the RLC bearer between the second terminal and the relay terminal, but it saves a piece of configuration compared to the way configured by the relay terminal. Signaling.
  • the first reconfiguration message also carries configuration information of the first side link radio bearer SLRB between the first terminal and the relay terminal;
  • the second reconfiguration message also carries configuration information of the second SLRB between the second terminal and the relay terminal.
  • the PC5 RRC is established between the first terminal and the relay terminal and the corresponding SLRB and RLC bearers are established to carry and transmit data of the first terminal.
  • the PC5 RRC is also established between the second terminal and the relay terminal, and corresponding SLRB and RLC bearers are established to carry and transmit the data of the second terminal.
  • the first terminal acts as the initiator or sender and wants to transmit data with the second terminal
  • the distance between the first terminal and the second terminal is too far, the effect of direct PC5 communication is poor, so find the middle
  • the relay terminal transfers the data.
  • PC5 RRC If the PC5 RRC connection has not been established between the first terminal and the relay terminal (or the second terminal and the relay terminal), the establishment of the PC5 RRC is triggered. If there is already a PC5 RRC connection between the first terminal and the relay terminal (or the second terminal and the relay terminal), the existing PC5 RRC can be directly reused, or a new PC5 RRC can be re-established. Because PC5 RRC is identified based on a pair of source L2 ID and target L2 ID, multiple PC5 RRCs can be established as long as different L2 IDs are used between two terminals.
  • the first terminal and the relay terminal adopt the same PC5 RRC; that is, the first terminal and the relay terminal (or the second terminal and the relay terminal)
  • the existing PC5 direct communication service can be managed together with the transfer service between the first terminal and the relay terminal (or the second terminal and the relay terminal), maintaining a PC5 link, which is more convenient to maintain.
  • the first terminal and the relay terminal adopt different PC5 RRC, that is, the existing PC5 directly between the first terminal and the relay terminal (or the second terminal and the relay terminal)
  • the communication service maintains a PC5 RRC
  • the first terminal needs to relay the terminal to the second terminal for independent management of the business, and maintains another PC5 RRC. Because the final transmission destination and operation of the data in different scenarios are different, separate maintenance is easier to maintain. Good to map and operate separately.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer carry identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration of the SLRB and the configuration of the RLC bearer are generally configured in two different domains, and the two sets of configurations are associated with each other through the SLRB index. That is, the SLRB configuration includes the SLRB index, and the RLC bearer configuration also carries the SLRB index.
  • the same SLRB index value corresponds to a pair of SLRB configuration and RLC bearer configuration as a bearer high-level configuration and low-level configuration, which work together. .
  • the relay terminal when the relay terminal receives the first reconfiguration message sent by the first terminal, it establishes the corresponding SLRB and RLC bearers according to the configuration, and sends a reconfiguration complete message to the first terminal. And according to these configurations, organize a new PC5 RRC message (that is, the second reconfiguration message) and send it to the second terminal to establish the SLRB and RLC bearer between the relay terminal and the second terminal.
  • the second terminal receives the second reconfiguration message, establishes the SLRB and RLC bearers according to the configuration, and sends a reconfiguration complete message to the relay terminal. At this point, the establishment of the data transmission pipeline between the first terminal and the second terminal is completed.
  • the relay terminal needs to maintain the correct mapping relationship between the two transmission pipes (the transmission pipe between the first terminal and the relay terminal, and the transmission pipe between the second terminal and the relay terminal) to ensure that the first The data of the terminal can reach the second terminal through the correct carrying pipeline. That is, in the embodiment of the present application, the method further includes:
  • the specific mapping method includes any of the following:
  • PC5 RRC link is one-to-one mapping
  • SLRB is also one-to-one mapping.
  • the PC5 link 2 is established for the relay service between the first terminal and the relay terminal
  • the SLRB index is established at 1, 2, and 3 to transmit services of different attributes.
  • the SLRB index established 1, 2, and 3 to transmit services with different attributes, and the two sets of SLRB index serial numbers were mapped correspondingly in order.
  • SLRB is one-to-one mapping.
  • the original PC5 link 1 is reused between the first terminal and the relay terminal for the relay service, and the SLRB index is established at 6, 7, and 8 to transmit services of different attributes.
  • the relay terminal and the second terminal The original PC5 link 2 is reused for the relay service.
  • the SLRB index is established at 3, 4, and 5 to transmit services with different attributes.
  • the two sets of SLRB index numbers (3-6, 4-7, 5-8) ) Corresponding mapping.
  • SLRB multiplexing PC5 RRC link multiplexing
  • SLRBs can also be multiplexed, and the details are carried in the data packet, for example, part of the data of the first segment of SLRB3 is mapped to the second segment of SLRB6 , The reason is part of the data of SLRB3, because SLRB3 may also be multiplexed with data to other target nodes, and the second segment of SLRB6 carries data from the first terminal, and may also carry data from other terminals. Data with similar QoS requirements.
  • the relay terminal participates in the configuration of the two links and maintains the mapping relationship.
  • the data from the first terminal can be used in the corresponding configuration and mapping relationship.
  • the second terminal can also use the same process to establish a two-stage transmission pipeline from the second terminal to the first terminal, and transmit data to the first terminal through the two-stage transmission pipeline.
  • the second reconfiguration message can be sent by the relay terminal to the second terminal, or can be sent by the first terminal to the second terminal; if the second reconfiguration message is sent by the relay If the terminal sends the second terminal to the second terminal, the second reconfiguration message only needs to carry the configuration information carried by the second RLC; and if the second reconfiguration message is sent by the first terminal to the second terminal, the second reconfiguration message is also Carry the configuration information of the third SLRB between the first terminal and the second terminal.
  • the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal and the establishment of the RLC bearer between the second terminal and the relay terminal.
  • the configuration information of an RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal and the establishment of the RLC bearer between the second terminal and the relay terminal.
  • One set of configuration information can also be used.
  • the configuration information (that is, the configuration information carried by the first RLC includes two sets of configuration information), which is not specifically limited here.
  • the first terminal sends PC5 RRC reconfiguration signaling to the second terminal (the signaling is relayed by the relay terminal and carries the configuration information of the third SLRB), which is the SLRB related to the service configuration, and the configuration is used to establish the first terminal and SLRB between the second terminal.
  • the first terminal sends PC5 RRC reconfiguration signaling to the relay terminal to configure the related RLC bearer for the service and the mapping relationship between the third SLRB and the RLC bearer.
  • This configuration is used to establish a connection between the first terminal and the relay terminal.
  • RLC bearer According to the above configuration, the relay terminal sends PC5 RRC reconfiguration signaling to the second terminal to configure the related RLC bearer and the mapping relationship between the RLC bearer and SLRB for the service. This configuration is used to establish the second terminal and the relay terminal RLC bearer between.
  • the SLRB can be established according to the service transmission requirements, and this process is performed through the SRB3 between the first terminal and the second terminal.
  • the configuration content of the SLRB of the first terminal distinguishes different terminal states, which can come from Uu interface RRC dedicated signaling, system information block SIB messages or pre-configuration messages.
  • the first terminal sends the SLRB configuration message to the second terminal through the PC5-RRC interface, the SRB3 between the first terminal and the second terminal.
  • the second terminal After receiving the message, the second terminal establishes the corresponding SLRB according to the configuration, and returns a reconfiguration complete message . This completes the end-to-end configuration process of SLRB.
  • the configuration content of the RLC bearer of the first terminal also distinguishes different terminal states, which can come from Uu interface RRC dedicated signaling, SIB messages or pre-configuration messages.
  • the first terminal sends the RLC bearer configuration message to the relay terminal through the PC5-RRC interface, the SRB3 between the first terminal and the relay terminal, and configures the SLRB of the first terminal and the second terminal and the newly established RLC bearer
  • the relay terminal After receiving the mapping relationship, the relay terminal establishes the corresponding RLC bearer according to the configuration, and returns a reconfiguration complete message, thus completing the first stage of the RLC bearer configuration process.
  • the relay terminal sends the RLC bearer configuration message to the second terminal through the PC5-RRC interface, the SRB3 between the relay terminal and the second terminal, and configures the SLRB of the first terminal and the second terminal and the newly established RLC bearer
  • the second terminal After receiving the mapping relationship, the second terminal establishes the corresponding RLC bearer according to the configuration, and returns a reconfiguration complete message, thus completing the second stage of the RLC bearer configuration process.
  • the first terminal uses the PC5 RRC reconfiguration signaling with the second terminal to simultaneously configure the SLRB and RLC to be carried to the second terminal.
  • This configuration is used to establish the SLRB between the first terminal and the second terminal, and the second The RLC bearer between the terminal and the relay terminal.
  • the SLRB SLRB between the first terminal and the second terminal
  • the RLC bearer the RLC bearer between the second terminal and the relay terminal
  • the first terminal configures the RLC bearer to the relay terminal through PC5 RRC signaling with the relay terminal.
  • the relay terminal After the relay terminal receives the configuration of the RLC bearer, it uses the same configuration to establish two RLC bearers at the same time, one of which is The RLC bearer is used for data transmission with the first terminal, and the other RLC bearer is used for data transmission with the second terminal.
  • the first terminal configures two sets of RLC bearers to the relay terminal through PC5 RRC signaling with the relay terminal, and indicates that one set of RLC bearer configuration is used for the RLC between the first terminal and the relay terminal Bearer establishment, another set of RLC bearer configuration is used for RLC bearer establishment between the second terminal and the relay terminal.
  • the relay terminal After receiving the RLC bearer configuration, the relay terminal uses different RLC bearer configurations to establish corresponding RLC bearers.
  • the relay terminal maintains the mapping relationship between the two RLC bearers.
  • the two RLC bearer IDs can be the same or different, but their common feature is that they both carry the same SLRB content.
  • the SLRB can be established according to the service transmission requirements, and this process is performed through the SRB3 between the first terminal and the second terminal.
  • the configuration content of the SLRB of the first terminal distinguishes different terminal states, which can come from Uu interface RRC dedicated signaling, system information block SIB messages or pre-configuration messages.
  • the first terminal sends the SLRB configuration message and the RLC configuration message to the second terminal through the PC5-RRC interface, the SRB3 between the first terminal and the second terminal, and configures the SLRB and the new establishment of the first terminal and the second terminal
  • the second terminal After receiving the mapping relationship of the RLC bearer, the second terminal establishes the corresponding SLRB and the RLC configuration between the second terminal and the relay terminal according to the configuration, and returns a reconfiguration complete message.
  • the first terminal sends the RLC bearer configuration message to the relay terminal through the PC5-RRC interface, the SRB3 between the first terminal and the relay terminal, and configures the SLRB of the first terminal and the second terminal and the newly established RLC bearer
  • the relay terminal After receiving the mapping relationship, the relay terminal establishes the RLC bearer between the first terminal and the relay terminal according to the configuration, and establishes the RLC bearer between the second terminal and the relay terminal according to the same configuration message, and returns that the reconfiguration is complete This completes the configuration process of the first segment of RLC bearer and the configuration process of the second segment of RLC bearer.
  • an RLC bearer needs to be established for transmitting PDCP protocol data unit (Protocol Data Unit, PDU).
  • PDU Protocol Data Unit
  • an RLC bearer also needs to be established to transmit PDCP PDUs.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer carry identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration information carried by the first RLC and the configuration information carried by the second RLC also carry identification information of the PC5 link associated with the corresponding RLC bearer.
  • the SLRB is end-to-end, and the RLC bearer is divided into two segments, the mapping relationship between each other cannot use the traditional simultaneous configuration method, but needs to be configured with a mapping method enhanced by different signaling processes.
  • the SLRB is configured between the first terminal and the second terminal, and the SLRB index is also valid on its corresponding PC5 link 1.
  • the RLC bearer corresponds to the PC5 link 2 between the first terminal and the relay terminal, or the PC5 link 3 between the relay terminal and the second terminal, which is equivalent to the PC5 link 2 and PC5 link 3.
  • the message indicate which SLRB index of PC5 link 1 corresponds to.
  • the configuration information of the third SLRB includes: identification information of the PC5 link associated with the third SLRB, such as the identity ID of the terminals at both ends, the L2 ID of the terminals at both ends, or the link ID, etc. .
  • the relay terminal does not parse the PC5-S signaling content, especially the content after security protection, which cannot be read by the relay terminal, but only maps the L2 address to help the data transmission between the terminals at both ends.
  • the relay terminal since the relay terminal also needs to establish RLC bearers with the first terminal and the second terminal in the subsequent process, PC5 signaling is required to send related configurations. Therefore, in the process of establishing security and PC5 RRC between the first terminal and the second terminal, the relay terminal also establishes security and PC5 RRC with these two terminals respectively. For example, when the second terminal receives the first request message forwarded by the relay terminal and decides to respond to the service of the first terminal, it not only establishes security and subsequent PC5 RRC to the first terminal, because it starts from the hop count information or relay information , It can be known that this is a relay service, not a directly connected service, so it also initiates the security establishment and the subsequent PC5 RRC process to the relay terminal at the same time.
  • the signaling from the second terminal to the first terminal and the signaling from the second terminal to the relay terminal can adopt different link ID/L2 ID pairs (for example, for the second terminal, the relay terminal L2 ID1 is unique One, but the second terminal can use its own L2 ID2 to send data to the first terminal, and use L2 ID3 to send data to the relay terminal.
  • the second terminal needs to inform the relay terminal that L2 ID2 and L2 ID3 are both themselves ID, bound to a relay architecture) to manage and send, but the terminals at both ends need to record the above-mentioned different link ID/L2 ID pair mapping relationship.
  • the same link ID/L2 ID pair can also be used for management and transmission.
  • the second terminal to The signaling of the relay terminal is transmitted using SLRB0, SLRB1, SLRB2, and SLRB3, and the signaling from the second terminal to the first terminal is transmitted using SLRB4, SLRB5, SLRB6, and SLRB7, or although both types of signaling share the same SLRB0, SLRB1, SLRB2, and SLRB3 are used for transmission, but the signaling itself carries information, whether it is for the relay terminal or the first terminal.
  • the relay terminal also needs to forward the security establishment of the second terminal to the first terminal while initiating the security establishment to the first terminal and the subsequent PC5 RRC establishment, pipe management and differentiation, and the above-mentioned relay terminal-second terminal The similarities between them will not be repeated here.
  • the method further includes:
  • the method further includes:
  • Each link ID/L2 ID pair (link ID/L2 ID Pair) is the same; for example, when transmitting between the first terminal and the relay terminal, the signaling of RRC connection 1 and the signaling of RRC connection 2 are the same If the link ID/L2 ID Pair is used for transmission, that is, the link pipe is the same, then the transmitted signaling must have an association relationship.
  • the SLRB index is unique in the link and can be used directly. In this way, because the two types of signaling pipelines are the same, there are other ways to distinguish different signaling types, such as different SRBs to carry, or the same SRB to carry distinguishing information, such as type or target node information. ;
  • Each link ID/L2 ID Pair is different; for example, when transmitting between the first terminal and the relay terminal, the signaling of RRC connection 1 and the signaling of RRC connection 2 adopt different link ID/L2 ID Pairs to transmit ,
  • the link pipes are inconsistent, and the signaling type can be directly distinguished (the final node where the data of different pipes arrive is different), then other methods need to be used to indicate the association relationship of the transmitted signaling, such as indicating two links in the signaling ID/L2 ID pair association (for example, link ID1 is used to transmit RRC connection 1 signaling between the first terminal and the relay terminal, and link ID2 is used to transmit RRC connection 2 between the first terminal and the relay terminal
  • these two links serve the same relay architecture, and the RLC bearer in link2 and the SLRB in link1 are mapped according to the same SLRB index), or although the RLC bearer configuration signaling is sent on link2, it is configured on link1
  • For the bearer specify the link corresponding to the configuration in the configuration signaling.
  • Each link ID/L2 ID pair (link ID/L2 ID Pair) is the same; for example, when transmitting between the first terminal and the relay terminal, the signaling of RRC connection 4 and the signaling of RRC connection 5 are the same If the link ID/L2 ID Pair is used for transmission, that is, the link pipe is the same, then the transmitted signaling must have an association relationship.
  • the SLRB index is unique in the link and can be used directly. In this way, because the two types of signaling pipelines are the same, there are other ways to distinguish different signaling types, such as different SRBs to carry, or the same SRB to carry distinguishing information, such as type or target node information. ;
  • Each link ID/L2 ID Pair is different; for example, when transmitting between the first terminal and the relay terminal, the signaling of RRC connection 4 and the signaling of RRC connection 5 adopt different link ID/L2 ID Pairs to transmit ,
  • the link pipes are inconsistent, and the signaling types can be directly distinguished (the final node where the data of different pipes arrive is different), then other methods are needed to indicate the association relationship of the transmitted signaling, such as indicating two link in the signaling.
  • ID/L2 ID pair association for example, link ID3 is used to transmit RRC connection 4 signaling between the first terminal and the second terminal, and link ID 4 is used to transmit RRC connection between the first terminal and the relay terminal 5 signaling, these two links serve the same relay architecture, the RLC bearer in link5 and the SLRB in link4 are mapped according to the same SLRB index), or although the RLC bearer configuration signaling is sent on link5, the configured link4 The bearer on the configuration signaling indicates the link corresponding to the configuration.
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • an embodiment of the present application also provides a bearer configuration method applied to a second terminal, including:
  • Step 401 Receive a second reconfiguration message sent by the first terminal or the relay terminal; the second reconfiguration message carries configuration information carried by the second RLC.
  • the configuration information carried by the second RLC is used to indicate the establishment of the RLC bearer between the second terminal and the relay terminal; the relay terminal After sending the second reconfiguration message to the second terminal, the relay terminal and the second terminal respectively establish an RLC bearer between the relay terminal and the second terminal according to the second reconfiguration message.
  • the relay terminal since the RLC bearer between the second terminal and the relay terminal is configured by the relay terminal, it only needs to be consistent with the configuration content of the RLC bearer between the first terminal and the relay terminal.
  • the relay terminal can allocate an ID different from the RLC bearer between the first terminal and the relay terminal to the RLC bearer between the second terminal and the relay terminal, which has certain configuration flexibility.
  • the second reconfiguration message further carries first indication information, and the first indication information is used to indicate that the configuration information carried by the second RLC is used for Establishment of the RLC bearer between the second terminal and the relay terminal.
  • the first terminal sends the second reconfiguration message to the second terminal
  • the second terminal establishes the RLC bearer between the second terminal and the relay terminal according to the second reconfiguration message; and the first terminal sends the first terminal to the relay terminal.
  • the relay terminal simultaneously establishes two RLC bearers (that is, the RLC bearer between the first terminal and the relay terminal, and the RLC bearer between the second terminal and the relay terminal) according to the first reconfiguration message.
  • the configuration information carried by the two RLCs can use the same set of configuration information or different configuration information; if the configuration information carried by the two RLCs are different configuration information, the first reconfiguration message needs to pass Directly or implicitly indicates which RLC bearer corresponds to each set of configuration information; in this case, since the RCL bearer between the second terminal and the relay terminal is configured by the first terminal, the first terminal The ID of the RLC bearer between a terminal and the relay terminal is the same as the ID of the RLC bearer between the second terminal and the relay terminal, but it saves a piece of configuration compared to the way configured by the relay terminal. Signaling.
  • the second reconfiguration message may be sent by the relay terminal to the second terminal, and may also be sent by the first terminal to the second terminal.
  • the second reconfiguration message is sent by the relay terminal to the second terminal.
  • the second reconfiguration message if the second reconfiguration message is sent by the relay terminal to the second terminal, the second reconfiguration message only needs to carry the configuration information carried by the second RLC; and if the second reconfiguration message is sent by the first terminal For the second terminal, the second reconfiguration message also carries configuration information of the third side link radio bearer SLRB between the first terminal and the second terminal.
  • the configuration information of the third SLRB includes: identification information of the PC5 link associated with the third SLRB.
  • the SLRB is end-to-end, and the RLC bearer is divided into two segments, the mapping relationship between each other cannot use the traditional simultaneous configuration method, but needs to be configured with a mapping method enhanced by different signaling processes.
  • the SLRB is configured between the first terminal and the second terminal, and the SLRB index is also valid on its corresponding PC5 link 1.
  • the RLC bearer corresponds to the PC5 link 2 between the first terminal and the relay terminal, or the PC5 link 3 between the relay terminal and the second terminal, which is equivalent to the PC5 link 2 and PC5 link 3.
  • the message indicate which SLRB index of PC5 link 1 corresponds to.
  • the second reconfiguration message if the second reconfiguration message is sent by the relay terminal, the second reconfiguration message also carries configuration information of the second SLRB between the second terminal and the relay terminal.
  • the configuration information of the second RLC bearer carries the identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration information of the second RLC bearer also carries the identification information of the PC5 link associated with the corresponding RLC bearer.
  • the configuration of the SLRB and the configuration of the RLC bearer are generally configured in two different domains, and the two sets of configurations are associated with each other through the SLRB index. That is, the SLRB configuration includes the SLRB index, and the RLC bearer configuration also carries the SLRB index.
  • the same SLRB index value corresponds to a pair of SLRB configuration and RLC bearer configuration, and a higher layer configuration of the bearer (ie SLRB configuration) and The bottom layer configuration (the configuration carried by the RLC) works together.
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • PC5 SRB used for signaling transmission includes:
  • PC5-S Transmission of unprotected PC5-S signaling
  • PC5-S is V2X high-level signaling, which belongs to the research scope of the core network
  • direct communication request messages which can be reused in relay operations
  • new signaling to carry relay-related request information in similar request messages for example, the relay can be accepted, and the current hop is, for example, the initial node is set to 0 hops, and the service information that needs to be relayed, etc. .
  • SRB 1 Transmission of PC5-S signaling related to safe activation operations; when the relay terminal decides to serve the first terminal, generally there is a corresponding suitable second terminal and the relay terminal is also found, and the link quality and service requirements, etc. Both are satisfied. At this time, security needs to be activated between the relay terminal and the first terminal, and the "direct security mode command" and "direct security mode complete” message transmission are performed to activate the security operation.
  • SRB3 After security activation, the protected PC5-RRC signaling is transmitted.
  • the bearer configuration between the relay terminal and the first terminal is transmitted through SRB3.
  • the first terminal still uses SRB0 to transmit unsecured PC5-S signaling (the source L2 ID is its own address, and the destination L2 ID is a broadcast address).
  • the signaling carries its own service information, such as whether it can accept relay Architecture, specific information of the relay architecture, such as hop limit, rate, etc., and the current hop count. If it is the originating terminal, the hop count can be 0.
  • the relay terminal receives the information, although it is not interested in the service, but according to various conditions, for example, the quality of the link from the first terminal meets the requirements, the relay terminal's own capability can support service transfer, which can be the first terminal transfer service , So the request message of the first terminal is forwarded.
  • SRB0 is still used to forward the request message of the first terminal, where the content of the request information remains unchanged, but the address is changed (the source L2 ID is changed to its own address, and the destination L2 ID is a broadcast address), the number of hops plus 1.
  • the second terminal receives the request message and finds that it is interested in the service and meets the basic relay conditions, such as meeting the hop requirement, and the link quality to the relay terminal meets the requirement, then initiates a security activation to the originating terminal Process, this process is based on high-level information, because the high-level information relay terminal cannot be modified, it is still the content for the first terminal.
  • This process is a unicast process, the source L2 ID is the address of the second terminal itself, and the destination L2 ID is the address that received the request, that is, the address of the relay terminal, and then the security activation signaling is sent to the relay terminal.
  • the relay terminal When the relay terminal receives the safety activation signaling, it can be from the specific high-level information or from the destination L2 ID used (for example, the relay terminal assigns different L2 IDs to different links.
  • This purpose L2 ID is specifically used for the first
  • the terminal and the second terminal are used to transfer data), knowing that this is the (secure activation) information for the first terminal, change the destination L2 ID to the address of the first terminal, and the source L2 ID to its own address, and send it to the first terminal.
  • the first terminal receives the security activation signaling forwarded by the relay terminal, performs security processing, and returns a response, and the response is still forwarded to the second terminal through the relay terminal.
  • the relay terminal maintains corresponding address mappings for the two links, the address of the first terminal, and the address of the relay terminal.
  • This pair of addresses is used for the communication between the relay terminal and the first terminal.
  • the address of the relay terminal is 2, the address of the second terminal.
  • This pair of addresses is used for the communication between the relay terminal and the second terminal.
  • the relay terminal maintains a one-to-one mapping relationship between the two pairs of addresses, so that an addressing relationship in which the first terminal sends data packets to the second terminal through the relay terminal can be established.
  • the content contained in the first reconfiguration message and/or the second reconfiguration message sent by the first terminal may come from the serving base station of the first terminal, for example, a dedicated RRC message, SIB message or pre-configuration via a Uu interface The news is obtained.
  • the first terminal When the first terminal is in the RRC connection state of the Uu interface, the first terminal reports to the serving cell the QoS information of the service that needs to be transmitted through the relay, including detailed QoS configuration information, rate information, transmission distance information, or even For the number of information of the terminal, etc., the serving cell configures the SLRB and RLC bearer for the first terminal according to the reported information.
  • the first terminal receives the configuration of the SLRB and RLC bearer sent by the Uu interface, and organizes the PC5 RRC reconfiguration message, Send the corresponding SLRB and RLC bearer configuration information to the relay terminal.
  • the first terminal When the first terminal is in the RRC idle or inactive state of the Uu interface, the first terminal reads the SIB information of the serving cell, and transmits the QoS information of the service through the relay according to its needs, including detailed QoS configuration information, rate information, Transmission distance information, even relay number information, etc., find the corresponding configuration from the SIB information, that is, the related configuration of the SLRB and RLC bearer, the first terminal organizes the PC5 RRC reconfiguration message, and the corresponding SLRB and RLC bearer The configuration information is sent to the relay terminal.
  • the first terminal uses its own PC5 pre-configuration information for the QoS information of the service that it needs to transmit through the relay, including detailed QoS configuration information, rate information, and transmission distance information. It can even be information about the number of relays. Find the corresponding configuration from the pre-configuration information, that is, the relevant configuration of the SLRB and RLC bearers. The first terminal organizes the PC5RRC reconfiguration message and sends the corresponding SLRB and RLC bearer configuration information to Relay terminal.
  • the execution subject may be the bearer configuration device, or the control module in the bearer configuration device for executing the load and bearer configuration method.
  • the bearer configuration apparatus executed by the bearer configuration method is taken as an example to illustrate the bearer configuration apparatus provided in the embodiment of the present application.
  • an embodiment of the present application also provides a bearer configuration apparatus 500, which is applied to a first terminal, and includes:
  • the first sending module 501 is configured to send a first reconfiguration message to the relay terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC;
  • the second sending module 502 is configured to send a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal; the second reconfiguration message carries a second RLC bearer Configuration information.
  • the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, and/or to indicate the RLC bearer between the second terminal and the relay terminal Establish.
  • the configuration information carried by the second RLC is used to indicate the RLC bearer between the second terminal and the relay terminal.
  • the second reconfiguration message When the first terminal sends the second reconfiguration message to the second terminal, the second reconfiguration message also carries first indication information, and the first indication information indicates that the configuration information carried by the second RLC is used for Establishment of the RLC bearer between the second terminal and the relay terminal.
  • the first reconfiguration message also carries configuration information of the first side link radio bearer SLRB between the first terminal and the relay terminal;
  • the second reconfiguration message also carries configuration information of the second SLRB between the second terminal and the relay terminal.
  • the second reconfiguration message also carries configuration information of the third SLRB between the first terminal and the second terminal.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer carry identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer also carry identification information of the PC5 link associated with the corresponding RLC bearer.
  • the configuration information of the third SLRB includes: identification information of the PC5 link associated with the third SLRB.
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • the bearer configuration device provided in the embodiments of the present application is a device capable of executing the above-mentioned bearer configuration method, and all embodiments of the above-mentioned bearer configuration method are applicable to the device, and can achieve the same or similar beneficial effects.
  • an embodiment of the present application also provides a bearer configuration device 600, which is applied to a relay terminal, and includes:
  • the first receiving module 601 is configured to receive a first reconfiguration message sent by a first terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC;
  • the third sending module 601 is configured to send a second reconfiguration message to the second terminal, or the first terminal sends a second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration of the second RLC bearer information.
  • the configuration information of the first RLC bearer is used to indicate the establishment of the RLC bearer between the first terminal and the relay terminal, and/or to indicate the RLC bearer between the second terminal and the relay terminal Establish.
  • the configuration information of the second RLC bearer is used to indicate the establishment of the RLC bearer between the second terminal and the relay terminal ;
  • the second reconfiguration message also carries first indication information, and the first indication information is used to indicate the configuration information carried by the second RLC.
  • the first reconfiguration message also carries configuration information of the first side link radio bearer SLRB between the first terminal and the relay terminal;
  • the second reconfiguration message also carries configuration information of the second SLRB between the second terminal and the relay terminal.
  • the second reconfiguration message also carries configuration information of the third SLRB between the first terminal and the second terminal.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer carry identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration information of the first RLC bearer and the configuration information of the second RLC bearer also carry identification information of the PC5 link associated with the corresponding RLC bearer.
  • the configuration information of the third SLRB includes: identification information of the PC5 link associated with the third SLRB.
  • the device further includes:
  • a first maintenance module configured to maintain the mapping relationship between the first SLRB and the second SLRB;
  • the device further includes:
  • the second maintenance module is used to maintain the mapping relationship between RLC bearers associated with the same SLRB.
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • the bearer configuration device provided in the embodiments of the present application is a device capable of executing the above-mentioned bearer configuration method, and all embodiments of the above-mentioned bearer configuration method are applicable to the device, and can achieve the same or similar beneficial effects.
  • an embodiment of the present application also provides a bearer configuration apparatus 700, which is applied to a second terminal, and includes:
  • the second receiving module 701 is configured to receive a second reconfiguration message sent by the first terminal or the relay terminal; the second reconfiguration message carries configuration information carried by the second RLC.
  • the configuration information of the second RLC bearer is used to indicate the establishment of the RLC bearer between the second terminal and the relay terminal;
  • the second reconfiguration message further carries first indication information, and the first indication information indicates that the configuration information carried by the second RLC is used for the second The establishment of the RLC bearer between the terminal and the relay terminal.
  • the second reconfiguration message if the second reconfiguration message is sent by the first terminal, the second reconfiguration message also carries the third side link radio bearer SLRB between the first terminal and the second terminal. Configuration information.
  • the configuration information of the third SLRB includes: identification information of the PC5 link associated with the third SLRB.
  • the second reconfiguration message if the second reconfiguration message is sent by the relay terminal, the second reconfiguration message also carries configuration information of the second SLRB between the second terminal and the relay terminal.
  • the configuration information of the second RLC bearer carries the identification information of the SLRB associated with the corresponding RLC bearer.
  • the configuration information of the second RLC bearer also carries identification information of the PC5 link associated with the corresponding RLC bearer.
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • the bearer configuration device provided in the embodiments of the present application is a device capable of executing the above-mentioned bearer configuration method, and all embodiments of the above-mentioned bearer configuration method are applicable to the device, and can achieve the same or similar beneficial effects.
  • the carrying configuration device in the embodiment of the present application may be a device, or a component, an integrated circuit, or a chip in a terminal.
  • the device can be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant). assistant, PDA), etc.
  • Non-mobile electronic devices can be servers, network attached storage (NAS), personal computers (PC), televisions (television, TV), teller machines or self-service machines, etc. This application The embodiments are not specifically limited.
  • the bearer configuration device in the embodiment of the present application may be a device with an operating system.
  • the operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.
  • the bearer configuration device provided in the embodiment of the present application can implement the various processes implemented by the method embodiments in FIGS. 2 to 4, and to avoid repetition, details are not described herein again.
  • an embodiment of the present application further provides a terminal, including a processor 801, a memory 802, a program or instruction stored in the memory 802 and capable of running on the processor 801, the program Or, when the instructions are executed by the processor 801, each process of the foregoing embodiment of the bearer configuration method can be realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910 and other components .
  • the terminal 900 may also include a power source (such as a battery) for supplying power to various components.
  • the power source may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or different component arrangements, which will not be repeated here.
  • the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042.
  • the graphics processor 9041 is paired by the image capture device ( For example, the image data of the still picture or video obtained by the camera) is processed.
  • the display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 907 includes a touch panel 9071 and other input devices 9072.
  • the touch panel 9071 is also called a touch screen.
  • the touch panel 9071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the radio frequency unit 901 receives the downlink data from the network-side device and sends it to the processor 910 for processing; in addition, it sends the uplink data to the network-side device.
  • the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 909 can be used to store software programs or instructions and various data.
  • the memory 909 may mainly include a storage program or instruction area and a data storage area, where the storage program or instruction area may store an operating system, an application program or instruction required by at least one function (such as a sound playback function, an image playback function, etc.).
  • the memory 909 may include a high-speed random access memory, and may also include a non-volatile memory, where the non-volatile memory may be a read-only memory (Read-Only Memory, ROM) or a programmable read-only memory (Programmable ROM).
  • PROM erasable programmable read-only memory
  • Erasable PROM EPROM
  • Electrically erasable programmable read-only memory Electrically EPROM, EEPROM
  • flash memory For example, at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 910 may include one or more processing units; optionally, the processor 910 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc.
  • the modem processor mainly deals with wireless communication, such as a baseband processor. It can be understood that the foregoing modem processor may not be integrated into the processor 910.
  • the radio frequency unit 901 is configured to send a first reconfiguration message to the relay terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC;
  • the second reconfiguration message is sent to the second terminal, or the relay terminal sends the second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration information carried by the second RLC.
  • the radio frequency unit 901 is further configured to receive a first reconfiguration message sent by the first terminal, where the first reconfiguration message carries configuration information carried by the first radio link control RLC;
  • the second reconfiguration message is sent to the second terminal, or the first terminal sends the second reconfiguration message to the second terminal; the second reconfiguration message carries the configuration information carried by the second RLC.
  • the radio frequency unit 901 is further configured to receive a second reconfiguration message sent by the first terminal or the relay terminal; the second reconfiguration message carries configuration information carried by the second RLC.
  • the first terminal sends a first reconfiguration message to the relay terminal, and the first terminal sends a second reconfiguration message to the second terminal, or the relay terminal sends a second reconfiguration message to the second terminal
  • the first terminal, the relay terminal and the second terminal can be configured in a coordinated and consistent manner, so as to realize the transmission of the remote terminal's bearer or data stream to the relay terminal, and finally reach the target terminal, ensuring the remote terminal service
  • the bearer configuration device provided in the embodiments of the present application is a device capable of executing the above-mentioned bearer configuration method, and all embodiments of the above-mentioned bearer configuration method are applicable to the device, and can achieve the same or similar beneficial effects.
  • the embodiment of the present application also provides a readable storage medium with a program or instruction stored on the readable storage medium.
  • the program or instruction is executed by a processor, each process of the foregoing embodiment of the carrier configuration method is realized, and the same can be achieved. In order to avoid repetition, I won’t repeat them here.
  • the processor is the processor in the electronic device described in the foregoing embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks, or optical disks.
  • An embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a program or an instruction to implement the above-mentioned carrier configuration method embodiment
  • the chip includes a processor and a communication interface
  • the communication interface is coupled with the processor
  • the processor is used to run a program or an instruction to implement the above-mentioned carrier configuration method embodiment
  • chips mentioned in the embodiments of the present application may also be referred to as system-level chips, system-on-chips, system-on-chips, or system-on-chips.
  • the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本申请公开了一种承载配置方法、装置及终端，该方法包括：向中继终端发送第一重配置消息，第一重配置消息携带第一RLC承载的配置信息；向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；第二重配置消息携带第二RLC承载的配置信息。

Description

承载配置方法、装置及终端
相关申请的交叉引用
本申请主张在2020年6月11日在中国提交的中国专利申请号No.202010531658.0的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种承载配置方法、装置及终端。
背景技术
长期演进(Long Term Evolution，LTE)系统开始支持旁链路(sidelink，或译为侧链路，边链路，副链路等)，用于终端用户设备(User Equipment，UE)之间不通过网络设备进行直接数据传输。
LTE sidelink的设计适用于特定的公共安全事务(如火灾场所或地震等灾难场所进行紧急通讯)，或车联网(vehicle to everything，V2X)通信等。车联网通信包括各种业务，例如，基本安全类通信，高级(自动)驾驶，编队，传感器扩展等等。由于LTE sidelink只支持广播通信，因此主要用于基本安全类通信，其他在时延、可靠性等方面具有严格服务质量(Quality of Service，QoS)需求的高级V2X业务将通过新空口(New Radio，NR)sidelink支持。
5G NR系统可用于LTE所不支持的6GHz以上工作频段，支持更大的工作带宽，但目前版本的NR系统只支持基站与终端间的接口，尚不支持终端之间直接通信的Sidelink接口。
Sidelink链路接口又可以称作PC5接口。
目前的sidelink传输也主要分广播(broadcast)，组播(groupcast)，单播(unicast)几种传输形式。单播顾名思义就是一对一的传输。组播为一对多的传输。广播也是一对多的传输，但是广播并没有终端属于同一个组的概念。
目前Sidelink单播和组播通信支持物理层混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)反馈机制。
Sidelink终端的资源分配模式总共分为两类：
1)由网络侧设备(基站)控制并为每个终端分配资源；
2)由每个终端自主选择资源。
典型的终端到终端Sidelink中继(UE-to-UE sidelink relay)场景中，远端终端(remote UE)通过和中继终端(relay UE)之间的Sidelink链路，由中继终端将它的数据与目标终端之间进行转发。在这个场景中，远端终端1和远端终端2之间进行数据传输，中继终端起到数据中转作用。
在实现本申请过程中，发明人发现现有技术中至少存在如下问题：
现有技术中，只解决了两个终端直接通信时的配置问题，例如终端1和终端2直接通信，通过PC5无线资源控制(Radio Resource Control，RRC)过程进行配置，建立旁链路无线承载(Sidelink Radio Bearer，SLRB)和无线链路控制承载(RLC bearer)，从而终端1和终端2之间的数据可以经过一跳PC5接口进行传输。
而在UE-to-UE relay的架构中，如何在两个远端终端之间、远端终端和中继终端之间进行配置，以及如何配置两段PC5链路，使得两个终端可以通过两跳甚至多跳的路径进行数据传输，目前并没有直接的方案。
发明内容
本申请实施例的目的是提供一种承载配置方法、装置及终端，能够解决现有技术中并未解决UE-to-UE sidelink relay场景中承载配置的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种承载配置方法，应用于第一终端，该方法包括：
向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
第二方面，本申请实施例提供了一种承载配置方法，应用于中继终端， 该方法包括：
接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
向第二终端发送第二重配置消息，或者，由第一终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
第三方面，本申请实施例提供了一种承载配置方法，应用于第二终端，该方法包括：
接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
第四方面，本申请实施例提供了一种承载配置装置，应用于第一终端，该装置包括：
第一发送模块，用于向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
第二发送模块，用于向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
第五方面，本申请实施例提供了一种承载配置装置，应用于中继终端，该装置包括：
第一接收模块，用于接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
第三发送模块，用于向第二终端发送第二重配置消息，或者，由第一终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
第六方面，本申请实施例提供了一种承载配置装置，应用于第二终端，该装置包括：
第二接收模块，用于接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
第七方面，提供了一种终端，该终端包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第八方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第九方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行网络侧设备程序或指令，实现如第一方面所述的方法，或实现如第二方面所述的方法，或实现如第三方面所述的方法。
在本申请实施例中，通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
附图说明
图1表示本申请实施例可应用的一种无线通信系统的框图；
图2表示本申请实施例提供的承载配置方法的步骤流程图之一；
图3表示本申请实施例提供的承载配置方法的步骤流程图之二；
图4表示本申请实施例提供的承载配置方法的步骤流程图之三；
图5表示本申请实施例提供的承载配置装置的结构示意图之一；
图6表示本申请实施例提供的承载配置装置的结构示意图之二；
图7表示本申请实施例提供的承载配置装置的结构示意图之三；
图8表示本申请实施例提供的终端的结构示意图之一；
图9表示本申请实施例提供的终端的结构示意图之二。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。然而，以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，尽管这些技术也可应用于NR系统应用以外的应用，如第6代(6 th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括远端终端11和中继终端12。其中，远端终端11和中继终端12均为终 端，该终端也可以称作终端设备或者用户终端(User Equipment，UE)，终端可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备(VUE)、行人终端(PUE)等终端侧设备，可穿戴式设备包括：手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端的具体类型。需要说明的是，在本申请实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的承载配置方法、装置及终端进行详细地说明
本申请实施例中UE-to-UE relay场景对应两种架构，分别为L2架构和L3架构。
其中，即L2构架中，L3协议栈(例如RRC，SDAP，PDCP等)位于两个对等端的远端终端实体，在中继终端仅有对应的RLC承载用于中转数据。L2架构的特点是，中继终端(relay UE)对其中继的数据并不具有完整的协议栈，即除了无线链路控制(Radio Link Control，RLC)，媒体访问控制地址(Media Access Control Address，MAC)和物理层(Physical，PHY)这些基本的L2传输协议栈以外，并没有对应的无线资源控制(Radio Resource Control，RRC)，服务数据适配协议(Service Data Adaptation Protocol，SDAP)，分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)等协议栈，只用RLC承载对远端终端(remote UE)的数据进行承载和传输。相当于第一终端和第二终端之间具有对等的RRC，SDAP和PDCP等协议栈，而第一终端与中继终端之间仅有RLC层及以下协议栈，中继终端与第二终端之间也仅有RLC层及以下协议栈。
其中，L3架构中，L3协议栈(例如RRC，SDAP，PDCP等)位于中继终端。即L3架构的特点是，中继终端(relay UE)具有完整的协议栈，即除了RLC，MAC和PHY这些基本的L2传输协议栈以外，也具有RRC，SDAP，PDCP等协议栈，用于对远端终端的数据进行承载和传输。相当于第一终端与 中继终端之间有完整的协议栈，中继终端与第二终端之间也有完整的协议栈。
需要说明的是，本申请的下述实施例中提及的第一终端、第二终端也可以称为第一远端终端、第二远端终端，在此不做具体限定。
如图2所示，本申请的至少一个实施例提供了一种承载配置方法，应用于第一终端，包括：
步骤201，向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息。其中，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，和/或，指示第二终端与中继终端之间的RLC承载的建立。
若第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，第一终端向中继终端发送第一重配置消息后，第一终端及中继终端分别根据该第一重配置消息建立第一终端与中继终端之间的RLC承载；若第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立和第二终端与中继终端之间的RLC承载的建立，第一终端根据第一重配置消息建立第一终端与中继终端之间的RLC承载，中继终端根据该第一重配置消息建立第一终端与中继终端之间的RLC承载，并建立第二终端与中继终端之间的RLC承载。
步骤202，向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
其中，由所述中继终端向第二终端发送第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；中继终端向第二终端发送第二重配置消息后，中继终端和第二终端分别根据该第二重配置消息建立中继终端与第二终端之间的RLC承载。此种情况下，由于第二终端与中继终端之间的RLC承载是由中继终端配置的，因此仅需要与第一终端和中继终端之间的RLC承载的配置内容保持一致即可，中继终端可以给第二终端与中继终端之间的RLC承载分配和第一终端和中继终端之间的RLC承载不一样的ID，具有一定的配置灵活性。
或者，第一终端向第二终端发送第二重配置消息的情况下，所述第二重 配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。第一终端向第二终端发送第二重配置消息后，第二终端根据该第二重配置消息建立第二终端与中继终端之间的RLC承载；而第一终端向中继终端发送第一重配置消息后，中继终端根据该第一重配置消息，同时建立两个RLC承载(即第一终端与中继终端之间的RLC承载，以及，第二终端与中继终端之间的RLC承载)，这两个RLC承载的配置信息可以采用同一套配置信息，也可以采用不同的配置信息；若上述两个RLC承载的配置信息为不同的配置信息，该第一重配置消息中需通过直接指示或隐式指示的方式指出每一套配置信息对应的哪一个RLC承载；此种情况下，由于第二终端与中继终端之间的RCL承载都是由第一终端集中配置的，第一终端与中继终端之间的RLC承载的ID和第二终端与中继终端之间的RLC承载的ID是相同的，但其相比于由中继终端配置的方式该方式节省了一条配置信令。
作为一个可选实施例，在L3架构下，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
在L3架构下，第一终端与中继终端之间建立PC5 RRC并建立相应的SLRB和RLC承载，用于对第一终端的数据进行承载和传输。第二终端与中继终端之间也建立PC5 RRC并建立相应的SLRB和RLC承载，用于对第二终端的数据进行承载和传输。
当第一终端作为发起端或发送端，希望与第二终端之间进行数据传输时，由于第一终端与第二终端之间距离过远，直接PC5通信的效果较差，因此找到位于中间的中继终端对数据进行中转传输。
如果第一终端和中继终端(或第二终端与中继终端)之间还没有建立PC5 RRC连接，则触发建立PC5 RRC。如果第一终端和中继终端(或第二终端与中继终端)之间已经有PC5 RRC连接，则可以直接复用现有的PC5 RRC，也可以重新建立一个新的PC5 RRC。因为PC5 RRC是基于一对源L2 ID和目标L2 ID标识的，在两个终端之间只要使用不同的L2 ID就可以建立多条PC5  RRC。
为适应不同的传输场景，第一终端与中继终端(或第二终端与中继终端)采取建立相同的PC5 RRC；即第一终端与中继终端(或第二终端与中继终端)之间现有的PC5直接通信的业务，可以和第一终端与中继终端(或第二终端与中继终端)之间的中转业务进行一起管理，维护一条PC5链路，维护较为方便。或者，第一终端与中继终端(或第二终端与中继终端)采取不同的PC5 RRC，即第一终端与中继终端(或第二终端与中继终端)之间现有的PC5直接通信的业务维护一条PC5 RRC，第一终端需要中继终端中转给第二终端的业务独立管理，维护另一条PC5 RRC，由于不同场景下数据的最终传输目的地和操作不一样，分开维护便于更好的进行映射和分别操作。
作为一个可选实施例，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
需要说明的是，SLRB的配置和RLC承载的配置一般是两个不同的域进行配置，通过SLRB索引将两组配置关联在一起。即SLRB的配置中包含有SLRB索引，RLC承载的配置中也会携带SLRB索引，相同的SLRB索引值对应一对SLRB的配置和RLC承载的配置，一条承载的高层配置(即SLRB的配置)和底层配置(RLC承载的配置)，一起协同工作。
可选地，在L3架构下，当中继终端接收到第一终端发送的第一重配置消息，按照该配置建立对应的SLRB和RLC承载，向第一终端发送重配置完成消息。并根据这些配置，组织一条新的PC5 RRC消息(即第二重配置消息)，发送给第二终端，用以建立中继终端和第二终端之间的SLRB和RLC承载。第二终端接收到第二重配置消息，按照配置进行SLRB和RLC承载的建立，并向中继终端发送重配置完成消息。至此，第一终端到第二终端之间的数据传输管道就建立完成。
可选地，L3架构下，第一重配置消息和/或第二重配置消息由PC5 RRC重配置信令携带，在此不做具体限定。
作为另一个可选实施例，在L2架构下，第二重配置消息可以由中继终端发送给第二终端，也可以由第一终端发送给第二终端；若第二重配置消息由中继终端发送给第二终端，则第二重配置消息携带第二RLC承载的配置信息 即可；而若第二重配置消息由第一终端发送给第二终端，则所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
需要说明的是，L2架构下，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立以及第二终端与中继终端之间的RLC承载的建立，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立以及第二终端与中继终端之间的RLC承载的建立可以使用一套配置信息，也可以使用两套配置信息(即第一RLC承载的配置信息包含两套配置信息)，在此不做具体限定。
例如，L2架构下，第一终端向第二终端发送PC5 RRC重配置信令(该信令经过中继终端中转，其携带第三SLRB的配置信息)，为业务配置相关的SLRB，该配置用于建立第一终端与第二终端之间的SLRB。第一终端向中继终端发送PC5 RRC重配置信令，为业务配置相关的RLC承载以及第三SLRB和RLC承载之间的映射关系，该配置用于建立第一终端与中继终端之间的RLC承载。中继终端根据上述配置，向第二终端发送PC5 RRC重配置信令，为该业务配置相关的RLC承载以及RLC承载与SLRB之间的映射关系，该配置用于建立第二终端和中继终端之间的RLC承载。
根据L2架构的特点，第一终端和第二终端之间要通过中继终端进行数据传输，则需要在第一终端和第二终端之间先建立SLRB，例如包含RRC，SDAP，PDCP等协议层，用于端到端的数据传输。而在第一终端和中继终端之间，需要建立RLC承载，用于传输PDCP协议数据单元(Protocol Data Unit，PDU)。在中继终端和第二终端之间，也需要建立RLC承载，用于传输PDCP PDU。
作为一个可选实施例，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
作为一个可选实施例，所述第一RLC承载的配置信息以及第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
由于L2架构下，SLRB是端到端的，RLC承载是分两段的，因此彼此之间的映射关系，不能使用传统的同时配置方式，而需要采取不同信令过程增强的映射方式来配置。在L2架构中，SLRB是第一终端和第二终端之间配置的，SLRB索引也是在其对应的PC5链路1有效的。而RLC承载对应的是第 一终端与中继终端之间的PC5链路2，或者中继终端与第二终端之间的PC5链路3，相当于要在PC5链路2和PC5链路3的消息里，指示对应的是PC5链路1的哪个SLRB索引，因为是不同的PC5链路，故不能仅携带SLRB索引，还需要标识对应的PC5链路，例如携带PC5链路相关的标识信息(两端终端的身份ID，两端终端的L2 ID，或者链路ID等)。
作为一个可选实施例，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息，例如两端终端的身份ID，两端终端的L2 ID，或者链路ID等。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
如图3所示，本申请实施例还提供一种承载配置方法，应用于中继终端，包括：
步骤301，接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；其中，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，和/或，指示第二终端与中继终端之间的RLC承载的建立。
若第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，第一终端向中继终端发送第一重配置消息后，第一终端及中继终端分别根据该第一重配置消息建立第一终端与中继终端之间的RLC承载；若第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立和第二终端与中继终端之间的RLC承载的建立，第一终端根据第一重配置消息建立第一终端与中继终端之间的RLC承载，中继终端根据该第一重配置消息建立第一终端与中继终端之间的RLC承载，并建立第二终端与中继终端之间的RLC承载。
步骤302，向第二终端发送第二重配置消息，或者，由第一终端向第二终 端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
其中，所述中继终端向第二终端发送第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；中继终端向第二终端发送第二重配置消息后，中继终端和第二终端分别根据该第二重配置消息建立中继终端与第二终端之间的RLC承载。此种情况下，由于第二终端与中继终端之间的RLC承载是由中继终端配置的，因此仅需要与第一终端和中继终端之间的RLC承载的配置内容保持一致即可，中继终端可以给第二终端与中继终端之间的RLC承载分配和第一终端和中继终端之间的RLC承载不一样的ID，具有一定的配置灵活性。
或者，由第一终端向第二终端发送第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。第一终端向第二终端发送第二重配置消息后，第二终端根据该第二重配置消息建立第二终端与中继终端之间的RLC承载；而第一终端向中继终端发送第一重配置消息后，中继终端根据该第一重配置消息，同时建立两个RLC承载(即第一终端与中继终端之间的RLC承载，以及，第二终端与中继终端之间的RLC承载)，这两个RLC承载的配置信息可以采用同一套配置信息，也可以采用不同的配置信息；若上述两个RLC承载的配置信息为不同的配置信息，该第一重配置消息中需通过直接指示或隐式指示的方式指出每一套配置信息对应的哪一个RLC承载；此种情况下，由于第二终端与中继终端之间的RCL承载都是由第一终端集中配置的，第一终端与中继终端之间的RLC承载的ID和第二终端与中继终端之间的RLC承载的ID是相同的，但其相比于由中继终端配置的方式该方式节省了一条配置信令。
作为一个可选实施例，在L3架构下，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
在L3架构下，第一终端与中继终端之间建立PC5 RRC并建立相应的SLRB和RLC承载，用于对第一终端的数据进行承载和传输。第二终端与中 继终端之间也建立PC5 RRC并建立相应的SLRB和RLC承载，用于对第二终端的数据进行承载和传输。
当第一终端作为发起端或发送端，希望与第二终端之间进行数据传输时，由于第一终端与第二终端之间距离过远，直接PC5通信的效果较差，因此找到位于中间的中继终端对数据进行中转传输。
如果第一终端和中继终端(或第二终端与中继终端)之间还没有建立PC5 RRC连接，则触发建立PC5 RRC。如果第一终端和中继终端(或第二终端与中继终端)之间已经有PC5 RRC连接，则可以直接复用现有的PC5 RRC，也可以重新建立一个新的PC5 RRC。因为PC5 RRC是基于一对源L2 ID和目标L2 ID标识的，在两个终端之间只要使用不同的L2 ID就可以建立多条PC5 RRC。
为适应不同的传输场景，第一终端与中继终端(或第二终端与中继终端)采取建立相同的PC5 RRC；即第一终端与中继终端(或第二终端与中继终端)之间现有的PC5直接通信的业务，可以和第一终端与中继终端(或第二终端与中继终端)之间的中转业务进行一起管理，维护一条PC5链路，维护较为方便。或者，第一终端与中继终端(或第二终端与中继终端)采取不同的PC5 RRC，即第一终端与中继终端(或第二终端与中继终端)之间现有的PC5直接通信的业务维护一条PC5 RRC，第一终端需要中继终端中转给第二终端的业务独立管理，维护另一条PC5 RRC，由于不同场景下数据的最终传输目的地和操作不一样，分开维护便于更好的进行映射和分别操作。
作为一个可选实施例，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
需要说明的是，SLRB的配置和RLC承载的配置一般是两个不同的域进行配置，通过SLRB索引将两组配置关联在一起。即SLRB的配置中包含有SLRB索引，RLC承载的配置中也会携带SLRB索引，相同的SLRB索引值对应一对SLRB的配置和RLC承载的配置为一条承载的高层配置和底层配置，一起协同工作。
可选地，在L3架构下，当中继终端接收到第一终端发送的第一重配置消息，按照该配置建立对应的SLRB和RLC承载，向第一终端发送重配置完成 消息。并根据这些配置，组织一条新的PC5 RRC消息(即第二重配置消息)，发送给第二终端，用以建立中继终端和第二终端之间的SLRB和RLC承载。第二终端接收到第二重配置消息，按照配置进行SLRB和RLC承载的建立，并向中继终端发送重配置完成消息。至此，第一终端到第二终端之间的数据传输管道就建立完成。
需要说的是，中继终端需要维护两段传输管道(第一终端与中继终端之间的传输管道、第二终端与中继终端之间的传输管道)的正确映射关系，以确保第一终端的数据能够通过正确的承载管道到达第二终端。即本申请实施例中，所述方法还包括：
维护所述第一SLRB和所述第二SLRB之间的映射关系；
和/或，
维护所述第一RLC承载和所述第二RLC承载之间的映射关系。
具体的映射方式包括下述任意一种：
1)PC5 RRC链路为一对一映射，SLRB也为一对一映射。例如，第一终端和中继终端之间为中继业务建立了PC5链路2，其中SLRB索引建立了1，2，3传输不同属性的业务，在中继终端和第二终端之间为中继业务建立了PC5链路3，其中SLRB索引建立了1，2，3传输不同属性的业务，两组SLRB索引序号按序对应映射。
2)PC5 RRC链路复用，SLRB为一对一映射。例如，第一终端和中继终端之间为中继业务复用了原有的PC5链路1，其中SLRB索引建立了6，7，8传输不同属性的业务，在中继终端和第二终端之间为中继业务复用了原有的PC5链路2，其中SLRB索引建立了3，4，5传输不同属性的业务，两组SLRB索引序号(3-6，4-7，5-8)对应映射。
3)PC5 RRC链路复用，SLRB复用。其需要的SLRB数目较少，即在PC5 RRC链路复用的基础上，SLRB也可以复用，在数据包中携带细节区分的方式，例如第一段SLRB3的一部分数据映射到第二段SLRB6，之所以是SLRB3的部分数据，是因为SLRB3有可能还复用有到其它目标节点的数据，而第二段的SLRB6上除了承载来自于第一终端的数据，还可能承载来自于其它终端的具有类似服务质量QoS需求的数据。
综上，在L3架构下，中继终端参与了两段链路的配置，并维护映射关系，在后续的数据传输中，可以按照配置和映射关系，将来自于第一终端的数据，在对应正确的管道上发送给第二终端。需要说明的是，第二终端也可以采用相同的过程，建立第二终端到第一终端的两段发送管道，通过两段发送管道传输数据给第一终端。
作为另一个可选实施例，在L2架构下，第二重配置消息可以由中继终端发送给第二终端，也可以由第一终端发送给第二终端；若第二重配置消息由中继终端发送给第二终端，则第二重配置消息携带第二RLC承载的配置信息即可；而若第二重配置消息由第一终端发送给第二终端，则所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
需要说明的是，L2架构下，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立以及第二终端与中继终端之间的RLC承载的建立，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立以及第二终端与中继终端之间的RLC承载的建立可以使用一套配置信息，也可以使用两套配置信息(即第一RLC承载的配置信息包含两套配置信息)，在此不做具体限定。
其中，L2架构下，第二重配置消息由中继终端发送给第二终端的情况下：
第一终端向第二终端发送PC5 RRC重配置信令(该信令经过中继终端中转，其携带第三SLRB的配置信息)，为业务配置相关的SLRB，该配置用于建立第一终端与第二终端之间的SLRB。第一终端向中继终端发送PC5 RRC重配置信令，为业务配置相关的RLC承载以及第三SLRB和RLC承载之间的映射关系，该配置用于建立第一终端与中继终端之间的RLC承载。中继终端根据上述配置，向第二终端发送PC5 RRC重配置信令，为该业务配置相关的RLC承载以及RLC承载与SLRB之间的映射关系，该配置用于建立第二终端和中继终端之间的RLC承载。
例如，第一终端和第二终端之间在基本的安全建立完成之后，可以根据业务传输的需求，进行SLRB的建立，这个过程是通过第一终端与第二终端之间的SRB3进行的。其中，第一终端的SLRB的配置内容区分不同的终端状态，可以来自于Uu接口RRC专用信令，系统信息块SIB消息或者预配置 消息。
第一终端通过PC5-RRC接口，第一终端与第二终端之间的SRB3，向第二终端发送SLRB的配置消息，接收到之后第二终端根据配置建立对应的SLRB，并返回重配置完成消息。这样就完成了SLRB的端到端配置过程。
对于RLC承载的建立，由于是第一终端和中继终端之间，以及中继终端与第二终端之间的，因此需要使用他们彼此之间的PC5-RRC过程进行建立。其中，第一终端的RLC承载的配置内容也是区分不同的终端状态，可以来自于Uu接口RRC专用信令，SIB消息或者预配置消息。
第一终端通过PC5-RRC接口，第一终端与中继终端之间的SRB3，向中继终端发送RLC承载的配置消息，并配置第一终端与第二终端的SLRB与新建立的RLC承载的映射关系，接收到之后中继终端根据配置建立对应的RLC承载，并返回重配置完成消息，这样就完成了第一段RLC承载的配置过程。中继终端通过PC5-RRC接口，中继终端与第二终端之间的SRB3，向第二终端发送RLC承载的配置消息，并配置第一终端与第二终端的SLRB与新建立的RLC承载的映射关系，接收到之后第二终端根据配置建立对应的RLC承载，返回重配置完成消息，这样就完成了第二段RLC承载的配置过程。
其中，L2架构下，第二重配置消息由第一终端发送给第二终端的情况下：
第一终端通过与第二终端之间的PC5 RRC重配置信令，同时配置SLRB和RLC承载给第二终端，该配置用于建立第一终端与第二终端之间的SLRB，以及，第二终端与中继终端之间的RLC承载。当第二终端接收到配置之后，可以同时配置SLRB(第一终端与第二终端之间的SLRB)和RLC承载(第二终端与中继终端之间的RLC承载)。
第一终端通过与中继终端之间的PC5 RRC信令，将RLC承载配置给中继终端，中继终端接收到RLC承载的配置之后，利用同一套配置，同时建立两个RLC承载，其中一个RLC承载用于与第一终端进行数据传输，另一个RLC承载用于与第二终端进行数据传输。或者，第一终端通过与中继终端之间的PC5 RRC信令，将两套RLC承载配置给中继终端，并指明其中一套RLC承载配置用于第一终端与中继终端之间的RLC承载建立，另一套RLC承载配置用于第二终端与中继终端之间的RLC承载建立，中继终端接收到RLC 承载配置后，分别利用不同的RLC承载配置，建立对应的RLC承载。
其中，中继终端维护这两个RLC承载之间的映射关系。这两个RLC承载ID可以相同也可以不同，但他们共同特点是都承载的是同一个SLRB内容。
例如，第一终端和第二终端之间在基本的安全建立完成之后，可以根据业务传输的需求，进行SLRB的建立，这个过程是通过第一终端与第二终端之间的SRB3进行的。其中，第一终端的SLRB的配置内容区分不同的终端状态，可以来自于Uu接口RRC专用信令，系统信息块SIB消息或者预配置消息。
第一终端通过PC5-RRC接口，第一终端与第二终端之间的SRB3，向第二终端发送SLRB的配置消息和RLC的配置消息，并配置第一终端与第二终端的SLRB与新建立的RLC承载的映射关系，接收到之后第二终端根据配置建立对应的SLRB以及第二终端与中继终端之间的RLC配置，并返回重配置完成消息。
第一终端通过PC5-RRC接口，第一终端与中继终端之间的SRB3，向中继终端发送RLC承载的配置消息，并配置第一终端与第二终端的SLRB与新建立的RLC承载的映射关系，接收到之后中继终端根据配置建立第一终端与中继终端之间的RLC承载，并根据相同的配置消息建立第二终端与中继终端之间的RLC承载，并返回重配置完成消息，这样就完成了第一段RLC承载的配置过程和第二段RLC承载的配置过程。
总得来说，根据L2架构的特点，第一终端和第二终端之间要通过中继终端进行数据传输，则需要在第一终端和第二终端之间先建立SLRB，例如包含RRC，SDAP，PDCP等协议层，用于端到端的数据传输。而在第一终端和中继终端之间，需要建立RLC承载，用于传输PDCP协议数据单元(Protocol Data Unit，PDU)。在中继终端和第二终端之间，也需要建立RLC承载，用于传输PDCP PDU。
作为一个可选实施例，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
作为一个可选实施例，所述第一RLC承载的配置信息以及第二RLC承 载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
由于L2架构下，SLRB是端到端的，RLC承载是分两段的，因此彼此之间的映射关系，不能使用传统的同时配置方式，而需要采取不同信令过程增强的映射方式来配置。在L2架构中，SLRB是第一终端和第二终端之间配置的，SLRB索引也是在其对应的PC5链路1有效的。那么RLC承载对应的是第一终端与中继终端之间的PC5链路2，或者中继终端与第二终端之间的PC5链路3，相当于要在PC5链路2和PC5链路3的消息里，指示对应的是PC5链路1的哪个SLRB索引，因为是不同的PC5链路，故不能仅携带SLRB索引，还需要标识对应的PC5链路，例如携带PC5链路相关的标识信息(两端终端的身份ID，两端终端的L2 ID，或者链路ID等)。
作为一个可选实施例，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息，例如两端终端的身份ID，两端终端的L2 ID，或者链路ID等。
在L2架构下，中继终端并不解析PC5-S信令内容，尤其是安全保护之后的内容，中继终端无法读取，只是对L2地址进行映射，帮助两端终端的数据传输。
特别的，由于中继终端在后续的过程中，也需要分别与第一终端和第二终端建立RLC承载，需要PC5信令来发送相关配置。因此在上述第一终端和第二终端建立安全和PC5 RRC的过程中，中继终端也分别与这两个终端建立安全和PC5 RRC。例如第二终端在接收到中继终端转发的第一条请求消息，决定响应第一终端的业务时，不仅向第一终端建立安全和后续的PC5 RRC，因为它从跳数信息或者中继信息，可以知道这是一个中继业务，并非直接连接的业务，因此也同时向中继终端发起安全建立和后续的PC5 RRC过程。第二终端向第一终端的信令，与第二终端向中继终端的信令，可以采取不同的链路ID/L2 ID对(例如对于第二终端来说，中继终端L2 ID1是唯一一个，但是第二终端可以用自己的L2 ID2来发送到第一终端的数据，而通过L2 ID3来发送到中继终端的数据，第二终端需要告知中继终端L2 ID2和L2 ID3都是自己的ID，且绑定一个中继架构)来管理和发送，但两端终端需记录上述不同的链路ID/L2 ID对的映射关系。也可以采取相同的链路ID/L2 ID对来管 理和发送，这种的好处是将此次中继架构的所有相关信令，都集中在一套链路ID/L2 ID对里发送，管理方便，如果用一套链路ID/L2 ID对来发送，那么需要显式的区分哪些数据是给第一终端的，哪些数据是给中继终端的，最简单的方式，例如第二终端到中继终端的信令，使用SLRB0，SLRB1，SLRB2，SLRB3来传输，第二终端到第一终端的信令，使用SLRB4，SLRB5，SLRB6，SLRB7来传输，或者虽然两种信令都共用相同的SLRB0，SLRB1，SLRB2，SLRB3来传输，但是信令本身携带信息，到底是给中继终端还是给第一终端的。同样的，中继终端也需要在转发第二终端给第一终端的安全建立同时，发起向第一终端的安全建立以及后续的PC5 RRC建立，管道管理与区分和上述中继终端-第二终端之间的类似，不再赘述。
作为一个可选实施例，所述方法还包括：
维护所述第一SLRB和所述第二SLRB之间的映射关系；
和/或，
维护所述第一RLC承载和所述第二RLC承载之间的映射关系。
其中，所述方法还包括：
维护关联相同SLRB的RLC承载之间的映射关系。
在L2架构配置方式中，第二重配置消息由中继终端发送给第二终端的情况下，由于SLRB通过第一终端和第二终端之间端到端的PC5 RRC(记为RRC连接1)来配置，而对应的RLC承载分别通过第一终端与中继终端之间的PC5 RRC(记为RRC连接2)，以及第二终端与中继终端之间的PC5 RRC(记为RRC连接3)来配置，同时需要配置一个SLRB到两个RLC承载的映射关系。牵涉到了三个PC5 RRC的关联性问题，具体的关联方式包括下述任意一种：
1)每一段链路ID/L2 ID对(link ID/L2 ID Pair)相同；例如在第一终端和中继终端之间传输时，RRC连接1的信令和RRC连接2的信令采取相同的link ID/L2 ID Pair来传输，即link管道是一样的，那么传输的信令一定具有关联关系，例如SLRB索引在该link唯一，可以直接用。这种方式中，由于两类信令管道一致，因此需要有其它方式区分不同的信令类型，例如不同的SRB来承载，或者相同SRB承载但是在消息具体携带区分信息，例如类 型或者目标节点信息；
2)每一段link ID/L2 ID Pair不同；例如在第一终端和中继终端之间传输时，RRC连接1的信令和RRC连接2的信令采取不同的link ID/L2 ID Pair来传输，link管道不一致，信令类型可以直接区分(不同管道的数据到达的最终节点不一样)，那么就需要用其它方式来指示传输的信令具有的关联关系，例如在信令中指示两个link ID/L2 ID pair的关联性(例如link ID1是用于第一终端与中继终端之间传输RRC连接1信令的，link ID2是用于第一终端与中继终端之间传输RRC连接2信令的，这俩link为同一个中继架构服务，link2中的RLC承载和link1中的SLRB按照相同SLRB索引进行映射)，或者虽然RLC承载配置信令在link2上发送，但配置的link1上的承载，在配置信令里指明配置对应的link。
在L2架构配置方式中，第二重配置消息由第一终端发送给第二终端的情况下，由于第一终端与第二终端之间的SLRB、第二终端与中继终端之间的RLC承载通过第一终端和第二终端之间端到端的PC5 RRC(记为RRC连接4)来配置，而第一终端与中继终端之间的RLC承载通过第一终端与中继终端之间的PC5 RRC(记为RRC连接5)来配置，同时需要配置一个SLRB到两个RLC承载的映射关系。牵涉到了两个PC5 RRC的关联性问题，具体的关联方式包括下述任意一种：
1)每一段链路ID/L2 ID对(link ID/L2 ID Pair)相同；例如在第一终端和中继终端之间传输时，RRC连接4的信令和RRC连接5的信令采取相同的link ID/L2 ID Pair来传输，即link管道是一样的，那么传输的信令一定具有关联关系，例如SLRB索引在该link唯一，可以直接用。这种方式中，由于两类信令管道一致，因此需要有其它方式区分不同的信令类型，例如不同的SRB来承载，或者相同SRB承载但是在消息具体携带区分信息，例如类型或者目标节点信息；
2)每一段link ID/L2 ID Pair不同；例如在第一终端和中继终端之间传输时，RRC连接4的信令和RRC连接5的信令采取不同的link ID/L2 ID Pair来传输，link管道不一致，信令类型可以直接区分(不同管道的数据到达的最终节点不一样)，那么就需要用其它方式来指示传输的信令具有的关联关系， 例如在信令中指示两个link ID/L2 ID pair的关联性(例如link ID3是用于第一终端与第二终端之间传输RRC连接4信令的，link ID 4是用于第一终端与中继终端之间传输RRC连接5信令的，这俩link为同一个中继架构服务，link5中的RLC承载和link4中的SLRB按照相同SLRB索引进行映射)，或者虽然RLC承载配置信令在link5上发送，但配置的link4上的承载，在配置信令里指明配置对应的link。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
如图4所示，本申请实施例还提供一种承载配置方法，应用于第二终端，包括：
步骤401，接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
作为一个可选实施例，接收中继终端发送的第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；中继终端向第二终端发送第二重配置消息后，中继终端和第二终端分别根据该第二重配置消息建立中继终端与第二终端之间的RLC承载。此种情况下，由于第二终端与中继终端之间的RLC承载是由中继终端配置的，因此仅需要与第一终端和中继终端之间的RLC承载的配置内容保持一致即可，中继终端可以给第二终端与中继终端之间的RLC承载分配和第一终端和中继终端之间的RLC承载不一样的ID，具有一定的配置灵活性。
或者，接收第一终端发送的第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。第一终端向第二终端发送第二重配置消息后，第二终端根据该第二重配置消息建立第二终端与中继终端之间的RLC承载；而第一终端向中继终端发送第一重配置消息后， 中继终端根据该第一重配置消息，同时建立两个RLC承载(即第一终端与中继终端之间的RLC承载，以及，第二终端与中继终端之间的RLC承载)，这两个RLC承载的配置信息可以采用同一套配置信息，也可以采用不同的配置信息；若上述两个RLC承载的配置信息为不同的配置信息，该第一重配置消息中需通过直接指示或隐式指示的方式指出每一套配置信息对应的哪一个RLC承载；此种情况下，由于第二终端与中继终端之间的RCL承载都是由第一终端集中配置的，第一终端与中继终端之间的RLC承载的ID和第二终端与中继终端之间的RLC承载的ID是相同的，但其相比于由中继终端配置的方式该方式节省了一条配置信令。
作为另一个可选实施例，在L2架构下，第二重配置消息可以由中继终端发送给第二终端，也可以由第一终端发送给第二终端。而在L3架构下，第二重配置消息由中继终端发送给第二终端。
在L2架构下，若第二重配置消息由中继终端发送给第二终端，则第二重配置消息携带第二RLC承载的配置信息即可；而若第二重配置消息由第一终端发送给第二终端，则所述第二重配置消息还携带第一终端与第二终端之间的第三旁链路无线承载SLRB的配置信息。
作为一个可选实施例，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
由于L2架构下，SLRB是端到端的，RLC承载是分两段的，因此彼此之间的映射关系，不能使用传统的同时配置方式，而需要采取不同信令过程增强的映射方式来配置。在L2架构中，SLRB是第一终端和第二终端之间配置的，SLRB索引也是在其对应的PC5链路1有效的。那么RLC承载对应的是第一终端与中继终端之间的PC5链路2，或者中继终端与第二终端之间的PC5链路3，相当于要在PC5链路2和PC5链路3的消息里，指示对应的是PC5链路1的哪个SLRB索引，因为是不同的PC5链路，故不能仅携带SLRB索引，还需要标识对应的PC5链路，例如携带PC5链路相关的标识信息(两端终端的身份ID，两端终端的L2 ID，或者链路ID等)。
在L3架构下，若所述第二重配置消息是中继终端发送的，所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
作为一个可选实施例，所述第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
其中，所述第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
需要说明的是，SLRB的配置和RLC承载的配置一般是两个不同的域进行配置，通过SLRB索引将两组配置关联在一起。即SLRB的配置中包含有SLRB索引，RLC承载的配置中也会携带SLRB索引，相同的SLRB索引值对应一对SLRB的配置和RLC承载的配置，一条承载的高层配置(即SLRB的配置)和底层配置(RLC承载的配置)，一起协同工作。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
需要说明的是，L3架构下，用于信令传输的PC5 SRB包括：
SRB 0：传输未经安全保护的PC5-S信令；(PC5-S是V2X高层信令，属于核心网研究范围)；例如直接通信请求消息，在中继操作中，可以复用该信令或者定义新的信令，用以在类似的请求消息中携带中继相关的请求信息，例如可以接受中继，当前是第几跳，例如初始节点设置为0跳，需要中继的业务信息等。
SRB 1：传输安全激活操作相关的PC5-S信令；当中继终端决定为第一终端进行服务，一般是有对应适合的第二终端也找到了中继终端，且链路质量和业务需求等都满足，这时候中继终端和第一终端之间需要先激活安全，进行“直接安全模式命令”和“直接安全模式完成”消息传输，激活安全操作。
SRB 2：在安全激活之后，传输被保护的PC5-S信令。
SRB3：在安全激活之后，传输被保护的PC5-RRC信令。中继终端和第一终端之间的承载配置，就是通过SRB3传输的。
对于L2架构来说，仍旧可以遵循上述4条SRB的信令传输规则，但具 体过程与L3架构是有区别的。
第一终端仍旧使用SRB0传输未经安全保护的PC5-S信令(源L2 ID是自己的地址，目的L2 ID是一个广播地址)，该信令携带自己的业务信息，例如是否可以接受中继架构，中继架构的具体信息，如跳数限制，速率等，以及当前的跳数，如果是始发终端，跳数可以为0。
中继终端接收到该信息，虽然自己不感兴趣该业务，但是根据各项条件，例如距离第一终端的链路质量满足要求，中继终端自身能力可以支持业务中转，可以为第一终端中转业务，因此转发第一终端的请求消息。依然是使用SRB0，将第一终端的请求消息中转出去，其中将请求信息内容保持不变，但地址有所变更(源L2 ID改成自己的地址，目的L2 ID是一个广播地址)，跳数加1。
第二终端接收到该请求消息，发现自己对该业务感兴趣，且满足基本的中继条件，例如满足跳数需求，到中继终端的链路质量满足要求，则向始发终端发起安全激活过程，这个过程基于高层的信息，因为高层信息中继终端并不能修改，仍旧是给第一终端的内容。该过程是一个单播过程，源L2 ID是第二终端自己的地址，目的L2 ID是接收到请求的地址，即中继终端的地址，于是安全激活信令被发送给中继终端。
中继终端接收到安全激活信令，可以从具体的高层信息里或者从使用的目的L2 ID(例如中继终端为不同的link分配不同的L2 ID,这个目的L2 ID就是专门用于为第一终端和第二终端中转数据用的)，获知这是给第一终端的(安全激活)信息，则将目的L2 ID改成第一终端的地址，源L2 ID改成自己的地址，发送给第一终端。第一终端接收到中继终端转发的安全激活信令，进行安全处理，并返回响应，响应依然通过中继终端中转给第二终端。
自此，中继终端为两段链路维护相应的地址映射，第一终端的地址，中继终端的地址1，这一对地址用于中继终端和第一终端之间的通信。中继终端的地址2，第二终端的地址，这一对地址用于中继终端和第二终端之间的通信。并且中继终端维护这两对地址的一一映射关系，从而可以建立起第一终端通过中继终端将数据包发到第二终端的寻址关系。
进一步需要说明的是，第一终端发送的第一重配置消息和/或第二重配置 消息包含的内容，可以来自第一终端的服务基站，例如通过Uu接口专用RRC消息，SIB消息或者预配置消息获得。
当第一终端处于Uu接口的RRC连接状态时，第一终端向服务小区上报自己的需要通过中继传输的业务的QoS信息，包括详细的QoS配置信息，速率信息，传输距离信息，甚至可以是终端的条数信息等，服务小区针对这些上报信息，对第一终端进行SLRB和RLC承载的相关配置，第一终端接收到Uu接口发送的SLRB和RLC承载的配置，组织PC5 RRC重配置消息，将对应的SLRB和RLC承载配置信息发送给中继终端。
当第一终端处于Uu接口的RRC空闲或非激活状态时，第一终端读取服务小区的SIB信息，根据自己需要通过中继传输的业务的QoS信息，包括详细的QoS配置信息，速率信息，传输距离信息，甚至可以是中继的条数信息等，从SIB信息里找到对应的配置，即SLRB和RLC承载的相关配置，第一终端组织PC5 RRC重配置消息，将对应的SLRB和RLC承载配置信息发送给中继终端。
当第一终端处于Uu接口脱网状态时，第一终端根据自己的PC5预配置信息，针对自己需要通过中继传输的业务的QoS信息，包括详细的QoS配置信息，速率信息，传输距离信息，甚至可以是中继的条数信息等，从预配置信息里找到对应的配置，即SLRB和RLC承载的相关配置，第一终端组织PC5RRC重配置消息，将对应的SLRB和RLC承载配置信息发送给中继终端。
需要说明的是，本申请实施例提供的承载配置方法，执行主体可以为承载配置装置，或者该承载配置装置中的用于执行加载承载配置方法的控制模块。本申请实施例中以承载配置装置执行承载配置方法为例，说明本申请实施例提供的承载配置装置。
如图5所示，本申请实施例还提供一种承载配置装置500，应用于第一终端，包括：
第一发送模块501，用于向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
第二发送模块502，用于向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二 RLC承载的配置信息。
作为一个可选实施例，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，和/或，指示第二终端与中继终端之间的RLC承载的建立。
作为一个可选实施例，由所述中继终端向第二终端发送第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；
或者，
第一终端向第二终端发送第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。
作为一个可选实施例，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
作为一个可选实施例，向第二终端发送第二重配置消息的情况下，
所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
作为一个可选实施例，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
作为一个可选实施例，所述第一RLC承载的配置信息以及第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
作为一个可选实施例，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保 障了系统效率。
需要说明的是，本申请实施例提供的承载配置装置是能够执行上述承载配置方法的装置，则上述承载配置方法的所有实施例均适用于该装置，且均能达到相同或相似的有益效果。
如图6所示，本申请实施例还提供一种承载配置装置600，应用于中继终端，包括：
第一接收模块601，用于接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
第三发送模块601，用于向第二终端发送第二重配置消息，或者，由第一终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
作为一个可选实施例，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，和/或，指示第二终端与中继终端之间的RLC承载的建立。
作为一个可选实施例，所述中继终端向第二终端发送第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；
或者，
由第一终端向第二终端发送第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。
作为一个可选实施例，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
作为一个可选实施例，由第一终端向第二终端发送第二重配置消息的情况下，
所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
作为一个可选实施例，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
作为一个可选实施例，所述第一RLC承载的配置信息以及第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
作为一个可选实施例，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
作为一个可选实施例，所述装置还包括：
第一维护模块，用于维护所述第一SLRB和所述第二SLRB之间的映射关系；
和/或，维护所述第一RLC承载和所述第二RLC承载之间的映射关系。
作为一个可选实施例，所述装置还包括：
第二维护模块，用于维护关联相同SLRB的RLC承载之间的映射关系。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
需要说明的是，本申请实施例提供的承载配置装置是能够执行上述承载配置方法的装置，则上述承载配置方法的所有实施例均适用于该装置，且均能达到相同或相似的有益效果。
如图7所示，本申请实施例还提供一种承载配置装置700，应用于第二终端，包括：
第二接收模块701，用于接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
作为一个可选实施例，接收中继终端发送的第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；
或者，
接收第一终端发送的第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。
作为一个可选实施例，若所述第二重配置消息是第一终端发送的，所述第二重配置消息还携带第一终端与第二终端之间的第三旁链路无线承载SLRB的配置信息。
作为一个可选实施例，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
作为一个可选实施例，若所述第二重配置消息是中继终端发送的，所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
作为一个可选实施例，所述第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
作为一个可选实施例，所述第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
需要说明的是，本申请实施例提供的承载配置装置是能够执行上述承载配置方法的装置，则上述承载配置方法的所有实施例均适用于该装置，且均能达到相同或相似的有益效果。
本申请实施例中的承载配置装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动电子设备，也可以为非移动电子设备。示例性的，移动电子设备可以为手机、平板电脑、笔记本电脑、掌上电脑、车载电子设备、可穿戴设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本或者个人数字助理(personal digital assistant，PDA)等，非移动电子设备可以为服务器、网络附属存储器(Network Attached Storage， NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的承载配置装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的承载配置装置能够实现图2至图4的方法实施例实现的各个过程，为避免重复，这里不再赘述。
可选的，如图8所示，本申请实施例还提供一种终端，包括处理器801，存储器802，存储在存储器802上并可在所述处理器801上运行的程序或指令，该程序或指令被处理器801执行时实现上述承载配置方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
图9为实现本申请实施例的一种终端的硬件结构示意图。该终端900包括但不限于：射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909、以及处理器910等部件。
本领域技术人员可以理解，终端900还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器910逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图9中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元904可以包括图形处理器(Graphics Processing Unit，GPU)9041和麦克风9042，图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元906可包括显示面板9061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板9061。用户输入单元907包括触控面板9071以及其他输入设备9072。触控面板9071，也称为触摸屏。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元901将来自网络侧设备的下行数据接收后，给处理器910处理；另外，将上行的数据发送给网络侧设备。通常，射频单元901包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器909可用于存储软件程序或指令以及各种数据。存储器909可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器909可以包括高速随机存取存储器，还可以包括非易失性存储器，其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器910可包括一个或多个处理单元；可选的，处理器910可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器910中。
其中，射频单元901，用于向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
或者，射频单元901，还用于接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
向第二终端发送第二重配置消息，或者，由第一终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
或者，射频单元901，还用于接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
本申请实施例通过第一终端向中继终端发送第一重配置消息，并通过第一终端向第二终端发送第二重配置消息或者通过中继终端向第二终端发送第 二重配置消息，能够使第一终端、中继终端以及第二终端之间进行协调一致的配置，从而实现远端终端的承载或数据流到中继终端的传输，并最终到达目标终端，保证了远端终端业务的服务质量QoS，在提升用户体验的同时保障了系统效率。
需要说明的是，本申请实施例提供的承载配置装置是能够执行上述承载配置方法的装置，则上述承载配置方法的所有实施例均适用于该装置，且均能达到相同或相似的有益效果。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述承载配置方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的电子设备中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述承载配置方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片、系统芯片、芯片系统或片上系统芯片等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组 合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (38)

  1. 一种承载配置方法，应用于第一终端，包括：
    向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
    向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
  2. 根据权利要求1所述的方法，其中，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，和/或，指示第二终端与中继终端之间的RLC承载的建立。
  3. 根据权利要求1所述的方法，其中，由所述中继终端向第二终端发送第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；
    或者，
    第一终端向第二终端发送第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。
  4. 根据权利要求1所述的方法，其中，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
    所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
  5. 根据权利要求1所述的方法，其中，向第二终端发送第二重配置消息的情况下，
    所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
  6. 根据权利要求4或5所述的方法，其中，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
  7. 根据权利要求6所述的方法，其中，所述第一RLC承载的配置信息以 及第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
  8. 根据权利要求5所述的方法，其中，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
  9. 一种承载配置方法，应用于中继终端，包括：
    接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
    向第二终端发送第二重配置消息，或者，由第一终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
  10. 根据权利要求9所述的方法，其中，第一RLC承载的配置信息用于指示第一终端与中继终端之间的RLC承载的建立，和/或，指示第二终端与中继终端之间的RLC承载的建立。
  11. 根据权利要求9所述的方法，其中，所述中继终端向第二终端发送第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；
    或者，
    由第一终端向第二终端发送第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。
  12. 根据权利要求9所述的方法，其中，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
    所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
  13. 根据权利要求9所述的方法，其中，由第一终端向第二终端发送第二重配置消息的情况下，
    所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
  14. 根据权利要求12或13所述的方法，其中，第一RLC承载的配置信息以及第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标 识信息。
  15. 根据权利要求14所述的方法，其中，所述第一RLC承载的配置信息以及第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
  16. 根据权利要求13所述的方法，其中，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
  17. 根据权利要求12或13所述的方法，还包括：
    维护所述第一SLRB和所述第二SLRB之间的映射关系；
    和/或，
    维护所述第一RLC承载和所述第二RLC承载之间的映射关系。
  18. 根据权利要求17所述的方法，还包括：
    维护关联相同SLRB的RLC承载之间的映射关系。
  19. 一种承载配置方法，应用于第二终端，包括：
    接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
  20. 根据权利要求19所述的方法，其中，接收中继终端发送的第二重配置消息的情况下，第二RLC承载的配置信息用于指示第二终端与中继终端之间的RLC承载的建立；
    或者，
    接收第一终端发送的第二重配置消息的情况下，所述第二重配置消息还携带第一指示信息，通过所述第一指示信息指示所述第二RLC承载的配置信息用于第二终端与中继终端之间的RLC承载的建立。
  21. 根据权利要求19所述的方法，其中，若所述第二重配置消息是第一终端发送的，所述第二重配置消息还携带第一终端与第二终端之间的第三旁链路无线承载SLRB的配置信息。
  22. 根据权利要求21所述的方法，其中，第三SLRB的配置信息包括：与所述第三SLRB关联的PC5链路的标识信息。
  23. 根据权利要求19所述的方法，其中，若所述第二重配置消息是中继终端发送的，所述第二重配置消息还携带第二终端与中继终端之间的第二 SLRB的配置信息。
  24. 根据权利要求21或23所述的方法，其中，所述第二RLC承载的配置信息中携带与对应RLC承载关联的SLRB的标识信息。
  25. 根据权利要求24所述的方法，其中，所述第二RLC承载的配置信息中还携带与对应RLC承载关联的PC5链路的标识信息。
  26. 一种承载配置装置，应用于第一终端，包括：
    第一发送模块，用于向中继终端发送第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
    第二发送模块，用于向第二终端发送第二重配置消息，或者，由所述中继终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
  27. 根据权利要求26所述的装置，其中，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
    所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
  28. 根据权利要求26所述的装置，其中，向第二终端发送第二重配置消息的情况下，
    所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
  29. 一种承载配置装置，应用于中继终端，包括：
    第一接收模块，用于接收第一终端发送的第一重配置消息，所述第一重配置消息携带第一无线链路控制RLC承载的配置信息；
    第三发送模块，用于向第二终端发送第二重配置消息，或者，由第一终端向第二终端发送第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
  30. 根据权利要求29所述的装置，其中，所述第一重配置消息还携带第一终端与中继终端之间的第一旁链路无线承载SLRB的配置信息；
    所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
  31. 根据权利要求29所述的装置，其中，由第一终端向第二终端发送第二重配置消息的情况下，
    所述第二重配置消息还携带第一终端与第二终端之间的第三SLRB的配置信息。
  32. 一种承载配置装置，应用于第二终端，包括：
    第二接收模块，用于接收第一终端或中继终端发送的第二重配置消息；所述第二重配置消息携带第二RLC承载的配置信息。
  33. 根据权利要求32所述的装置，其中，若所述第二重配置消息是第一终端发送的，所述第二重配置消息还携带第一终端与第二终端之间的第三旁链路无线承载SLRB的配置信息。
  34. 根据权利要求32所述的装置，其中，若所述第二重配置消息是中继终端发送的，所述第二重配置消息还携带第二终端与中继终端之间的第二SLRB的配置信息。
  35. 一种终端，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至8中任一项所述的承载配置方法的步骤；或者，所述程序或指令被所述处理器执行时实现如权利要求9至18中任一项所述的承载配置方法的步骤；或者，所述程序或指令被所述处理器执行时实现如权利要求19至25中任一项所述的承载配置方法的步骤。
  36. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-8任一项所述的承载配置方法的步骤；或者，所述程序或指令被处理器执行时实现如权利要求9-18任一项所述的承载配置方法的步骤；或者，所述程序或指令被处理器执行时实现如权利要求19-25任一项所述的承载配置方法的步骤。
  37. 一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行网络侧设备程序或指令，实现如如权利要求1-8任一项所述的承载配置方法的步骤；或者，所述程序或指令被处理器执行时实现如权利要求9-18任一项所述的承载配置方法的步骤；或者，所述程序或指令被处理器执行时实现如权利要求19-25任一项所述的承载配置方法的 步骤。
  38. 一种程序产品，其中，所述程序产品上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-8任一项所述的承载配置方法的步骤；或者，所述程序或指令被处理器执行时实现如权利要求9-18任一项所述的承载配置方法的步骤；或者，所述程序或指令被处理器执行时实现如权利要求19-25任一项所述的承载配置方法的步骤。
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