WO2022188035A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2022188035A1
WO2022188035A1 PCT/CN2021/079796 CN2021079796W WO2022188035A1 WO 2022188035 A1 WO2022188035 A1 WO 2022188035A1 CN 2021079796 W CN2021079796 W CN 2021079796W WO 2022188035 A1 WO2022188035 A1 WO 2022188035A1
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WO
WIPO (PCT)
Prior art keywords
communication device
information
qos parameter
parameter information
bearer
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PCT/CN2021/079796
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English (en)
French (fr)
Inventor
潘晓丹
王南鑫
彭文杰
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202180093536.0A priority Critical patent/CN116848885A/zh
Priority to EP21929517.7A priority patent/EP4280677A4/en
Priority to PCT/CN2021/079796 priority patent/WO2022188035A1/zh
Publication of WO2022188035A1 publication Critical patent/WO2022188035A1/zh
Priority to US18/448,955 priority patent/US20230388850A1/en

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    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • 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
    • 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

Definitions

  • the present application relates to the field of communication, and more particularly, to a communication method and apparatus in a relay scenario.
  • V2X Vehicle to Everything
  • the Internet of Vehicles collects vehicle information through in-vehicle sensors, in-vehicle terminals and other equipment, and realizes communication between vehicles and vehicles, vehicles and people, vehicles and roadside infrastructure, and vehicles and networks through V2X communication technology.
  • the Internet of Vehicles will become a fundamental part of realizing the intelligent transportation system in the future.
  • U2U relay system consists of near-end equipment, relay equipment and far-end equipment.
  • the first sidelink (SL1) between the near-end device and the relay device and the second sidelink (SL2) between the relay device and the far-end device pass through the sidelink interface (also called PC5 port) to communicate.
  • the embodiment of the present application discloses a communication method and device, so that in a U2U relay communication system, SLRBs of multiple sidelinks in a relay transmission link can be configured based on service quality requirement information, thereby realizing U2U The data transmission meets the QoS parameter requirements for end-to-end transmission.
  • a first aspect of the embodiments of the present application discloses a communication method, including: a relay communication device receiving a first message from a first communication device, where the first message includes: first parameter information and the relay communication device and the relay communication device.
  • configuration information carried by at least one radio link control (RLC) of the first sidelink between the first communication apparatuses the configuration information carried by the at least one RLC of the first sidelink is based on the first side determined by the first quality of service (QoS) parameter information of the uplink
  • the relay communication device sends a second message to the second communication device, and the second message includes the information between the relay communication device and the second communication device Configuration information carried by one RLC on the second sidelink, where the configuration information on the one RLC on the second sidelink is determined according to the first parameter information.
  • the SLRBs of the first sidelink and the second sidelink can be configured based on the QoS requirement information, so that the first communication device of the U2U relay communication system communicates with the first communication device through the relay communication device.
  • the data transmission of the two communication devices can meet the end-to-end QoS parameter requirements from the first communication device to the second communication device.
  • the above-mentioned first message further includes first identification information, where the first identification information is used to identify the second communication device.
  • the relay communication device does not know which communication device the current bearer configuration is used to communicate with, and the first communication device sends the first message to the communication device.
  • the relay communication device sends the first identification information, so that the relay communication device can know, according to the first identification information, that the current bearer configuration information is used for the communication between the first communication device and the second communication device.
  • the first parameter information includes: second QoS parameter information
  • the second QoS parameter information includes: the at least one RLC bearer of the first sidelink When the QoS flow (flow) is transmitted on the second side link, the QoS flow carried by the at least one RLC should meet the QoS parameter requirements; or, the first parameter information includes: second identification information, the second identification information Including: PC5 quality of service flow identifier (PFI) information corresponding to the at least one RLC bearer of the first sidelink, the PFI information is used for the relay communication device to determine second QoS parameter information, the second QoS parameter The information includes: when the QoS flow (flow) borne by the at least one RLC of the first sidelink is transmitted on the second sidelink, the QoS flow borne by the at least one RLC should meet the QoS parameter requirements.
  • PFI PC5 quality of service flow identifier
  • the relay communication device can determine the QoS parameter requirements that the second sidelink should meet according to the QoS parameter information corresponding to the RLC bearer of the second sidelink, so that the N first sidelink Bearer mapping prepares one bearer for the second sidelink.
  • the relay communication device determines third QoS parameter information according to the second QoS parameter information, and the third QoS parameter information is used by the relay communication device to determine the Configuration information carried by the one RLC of the second sidelink.
  • the first QoS parameter information and the third QoS parameter information meet the requirements of the fourth QoS parameter information
  • the fourth QoS parameter information is the first communication device End-to-end QoS parameter information to be satisfied when transmitting data to the second communication device.
  • the relay communication device determines the third QoS parameter information according to the second QoS parameter information, including any one of the following ways: in the second QoS parameter information In, select the QoS parameter information corresponding to the QoS flow (flow) with the highest priority as the third QoS parameter information; Or, in the second QoS parameter information, select the QoS parameter information corresponding to the QoS flow with the lowest packet delay budget as the the third QoS parameter information; or, in the second QoS parameter information, select the QoS parameter information corresponding to the QoS flow with the highest guaranteed stream bit rate requirement as the third QoS parameter information; or, in the second QoS parameter information , select the QoS parameter information corresponding to the QoS flow with the lowest packet error rate requirement as the third QoS parameter information; or, in the second QoS parameter information, select the QoS parameter information with the highest requirements as the third QoS parameter information; or, in the second QoS parameter information, select the QoS parameter information with the highest requirements as
  • the relay communication apparatus maps the N bearers of the first sidelink to one bearer of the second sidelink, the QoS parameters of the first sidelink and the QoS parameters of the second sidelink
  • the end-to-end quality of service requirements for data transmission from the first communication device to the second communication device can be met.
  • the relay communication device determines configuration information of the one RLC bearer of the second sidelink according to the third QoS parameter information; the relay communication device Determining the configuration information of the one RLC bearer of the second sidelink according to the third QoS parameter information includes any one of the following operations: when the relay communication apparatus is in the connected state, the relay communication apparatus sends a message to the network device.
  • the relay communication apparatus receives configuration information of the one RLC bearer of the second sidelink determined by the network device according to the third QoS parameter information; or, the relay communication apparatus is in a In the idle state or the inactive state, the relay communication device determines the configuration information of the one RLC bearer of the second sidelink according to the bearer configuration information in the system message broadcast by the network device; or, the relay communication device is in When the cell is out of coverage, the relay communication device determines configuration information of an RLC bearer of the second sidelink according to preconfigured bearer configuration information. In this way, the relay communication device can determine the corresponding bearer configuration information according to the corresponding QoS parameter information in a connected state, an idle state, an inactive state, or outside the coverage of a cell.
  • the relay communication device receives a first data unit from the first communication device, the first data unit carries third identification information, and the third identification The information is used to identify the bearer between the first communication device and the second communication device, so that the relay communication device can send the first data unit to the second communication device based on the third identification information.
  • the first message further includes third identification information, and the third identification information is used to identify the communication between the first communication device and the second communication device.
  • the third identification information has a corresponding relationship with the at least one RLC bearer of the first sidelink.
  • the relay communication device receives a first data unit from the first communication device; The first data unit of the third identification information.
  • a second aspect of an embodiment of the present application discloses a communication method, including: a first communication device generating a first message; the first communication device sending the first message to a relay communication device, where the first message includes: a first parameter information and configuration information carried by at least one RLC of a first sidelink, where the first sidelink is a communication link between the first communication device and the relay communication device, and the first parameter information
  • the configuration information of one RLC bearer of the second sidelink between the relay communication device and the second communication device is based on the first sidelink. It is determined by the first QoS parameter information of one side of the uplink.
  • the SLRBs of the first sidelink and the second sidelink can be configured based on the QoS requirement information, so that the first communication device of the U2U relay communication system communicates with the first communication device through the relay communication system.
  • the data transmission of the two communication devices can meet the end-to-end QoS parameter requirements from the first communication device to the second communication device.
  • the first communication device sends a third message to the second communication device through a relay communication device, where the third message includes first configuration information; the first communication device sends a third message to the second communication device.
  • the configuration information includes configuration information of Packet Data Convergence Layer Protocol (PDCP) and Service Data Adaptation Protocol (SDAP) required for transmission between the first communication device and the second communication device.
  • PDCP Packet Data Convergence Layer Protocol
  • SDAP Service Data Adaptation Protocol
  • the third message further includes third identification information; the third identification information is used to identify the bearer between the first communication device and the second communication device , the third identification information has a corresponding relationship with the first configuration information.
  • the first message further includes first identification information, where the first identification information is used to identify the second communication device.
  • the relay communication device does not know which communication device the current bearer configuration is used to communicate with, and the first communication device communicates with the second communication device through the first message
  • the first identification information is sent to the relay communication device, so that the relay communication device can learn, according to the first identification information, that the current bearer configuration information is used for the communication between the first communication device and the second communication device.
  • the first parameter information includes: second QoS parameter information
  • the second QoS parameter information includes: the at least one RLC bearer of the first sidelink When the QoS flow is transmitted on the second side link, the QoS parameter requirements that should be met by the QoS flow carried by the at least one RLC; or, the first parameter information includes: second identification information, and the second identification information includes: PC5 quality of service flow identifier (PFI) information corresponding to the at least one RLC bearer of the first sidelink, the PFI information is used for the relay communication device to determine second QoS parameter information, and the second QoS parameter information includes : QoS parameter requirements that should be met by the QoS flow borne by the at least one RLC when the QoS flow borne by the at least one RLC of the first sidelink is transmitted on the second sidelink.
  • PFI quality of service flow identifier
  • the relay communication device can determine the QoS parameter requirements that the second sidelink should meet according to the QoS parameter information corresponding to the RLC bearers of the second sidelink, which can be N number of first sidelinks.
  • Bearer mapping prepares one bearer for the second sidelink.
  • the configuration information of the at least one RLC bearer of the first sidelink is determined according to the first QoS parameter information of the first sidelink For example: when the first communication device is in the connected state, the first communication device sends the first QoS parameter information to the network device, and the first communication device receives the first QoS parameter information determined by the network device according to the first QoS parameter information.
  • the bearer configuration information in the system message broadcast by the network device of the first communication device determines the first communication device configuration information of the at least one RLC bearer of a side link; or, when the first communication device is outside the coverage of a cell, the first communication device determines the configuration information of the first side link according to the preconfigured bearer configuration information Configuration information carried by at least one RLC.
  • the relay communication apparatus maps the N bearers of the first sidelink to one bearer of the second sidelink, the first QoS parameter information of the first sidelink and the second sidelink
  • the third QoS parameter information meets the fourth QoS parameter information requirements from the first communication device to the second communication device.
  • the first communication device sends a first data unit to the relay communication device, where the first data unit carries third identification information, and the third identification information Used to identify the bearer between the first communication device and the second communication device.
  • the first message further includes third identification information, where the third identification information is used to identify a bearer between the first communication device and the second communication device , the third identification information has a corresponding relationship with the at least one RLC bearer of the first sidelink. Since the third identification information is carried in the first message, the relay communication apparatus can carry the third identification information in the data transmitted on the second sidelink, so that the data transmitted on the first sidelink can be transmitted on the first sidelink. When data is used, the data does not need to carry the third identification information, thereby saving data overhead and improving transmission efficiency.
  • a third aspect of an embodiment of the present application discloses a communication method, including: a second communication device receiving a second message from a relay communication device, where the second message includes the first communication device, the relay communication device and the relay configuration information carried by a radio link control (RLC) of a second sidelink between communication devices, the second communication device communicates with the relay according to the configuration information carried by the one RLC of the second sidelink The communication device communicates.
  • RLC radio link control
  • the second communication device receives a third message from the first communication device, where the third message includes first configuration information; the first configuration information includes using Configuration information of Packet Data Convergence Protocol (PDCP) and Service Data Adaptation Protocol (SDAP) required for transmission between the first communication device and the second communication device.
  • PDCP Packet Data Convergence Protocol
  • SDAP Service Data Adaptation Protocol
  • the third message further includes third identification information; the third identification information is used to identify the bearer between the first communication device and the second communication device , the third identification information has a corresponding relationship with the first configuration information.
  • the second communication device receives a first data unit from the relay communication device, the first data unit carries third identification information, and the third identification The information has a corresponding relationship with the first configuration information.
  • a fourth aspect of the embodiments of the present application provides a communication apparatus, which is applied to a relay communication apparatus, and includes a module for executing the method described in the first aspect or any possible implementation manner of the first aspect.
  • a fifth aspect of an embodiment of the present application provides a communication apparatus, where the communication apparatus is applied to a first communication apparatus, and includes a module for executing the method described in the second aspect or any possible implementation manner of the second aspect.
  • a sixth aspect of an embodiment of the present application provides a communication apparatus, where the communication apparatus is applied to a second communication apparatus, and includes a module for executing the method described in the third aspect or any possible implementation manner of the third aspect.
  • a seventh aspect of an embodiment of the present application provides a communication device, which is applied to a relay communication device, and includes a processor and an interface circuit, where the interface circuit is configured to receive signals from other devices other than the device and transmit signals to The processor or sends signals from the processor to other devices than the device, and the processor implements the first aspect or the descriptions in possible implementations of the first aspect through logic circuits or executing code instructions method.
  • An eighth aspect of an embodiment of the present application provides a communication device, which is applied to a first communication device and includes a processor and an interface circuit, where the interface circuit is configured to receive signals from other devices other than the device and transmit to The processor or sends signals from the processor to other devices than the device, and the processor implements the second aspect or the descriptions in possible implementations of the second aspect by means of logic circuits or executing code instructions method.
  • a ninth aspect of an embodiment of the present application provides a communication device, which is applied to a second communication device, and includes a processor and an interface circuit, where the interface circuit is configured to receive signals from other devices other than the device and transmit them to The processor or the processor sends signals from the processor to other devices than the device, and the processor implements the third aspect or the descriptions in possible implementations of the third aspect through logic circuits or executing code instructions method.
  • a tenth aspect of the embodiments of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed by a computing device, the first aspect or the first aspect is implemented.
  • An eleventh aspect of the embodiments of the present application provides a computer program product, where the computer program product includes a computer program or an instruction, and when the computer program or instruction is executed by a computing device, the first aspect or a possible implementation of the first aspect is realized
  • a twelfth aspect of an embodiment of the present application provides a communication system, and the communication system includes one or more of the following: the communication device according to any one of the fourth aspect to the ninth aspect, such as the one provided in the tenth aspect A computer-readable storage medium, and a computer program product as provided in the eleventh aspect.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a possible user plane protocol stack provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 4 is still another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is still another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 6 is still another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 7 is still another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 9 is still another schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 10 is still another schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 11 is still another schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • Sidelink (Sidelink, SL): Taking the communication device involved in the sidelink as the UE as an example, the wireless communication link between the UE and the UE is called the sidelink.
  • a typical application scenario is the Internet of Vehicles. In the Internet of Vehicles, each vehicle can be regarded as a UE, and the data transmission between the UE and the UE can be performed directly through the sidelink instead of the wireless network equipment, which can effectively reduce the communication delay. Broadcast, unicast, and multicast are supported on the sidelink.
  • Broadcast communication is similar to the broadcast system message of wireless network equipment, that is, the UE sends broadcast service data to the outside without encryption. Any other UE within the effective receiving range can receive the broadcast service if it is interested in the broadcast service. The data.
  • Unicast communication is similar to data communication after a radio resource control (RRC) connection is established between a UE and a wireless network device, and a unicast connection needs to be established between the two UEs first. After the unicast connection is established, the two UEs can communicate data based on the negotiated identity, and the data can be encrypted or unencrypted. Compared with broadcasting, in unicast communication, the unicast communication can only be performed between two UEs that have established a unicast connection.
  • RRC radio resource control
  • Multicast communication refers to the communication between all UEs in a communication group, and any UE in the group can send and receive data of the multicast service.
  • 5G Quality of Service QoS flow 5G Quality of Service QoS flow, 5G QoS flow
  • QoS flow is the minimum granularity of end-to-end transmission QoS control in the 5G system. All data mapped to the same 5G QoS flow can be forwarded in the same way, such as scheduling policy, queue management policy, rate shaping policy, Radio Link Control (RLC) configuration, etc. If the data to be transmitted needs different QoS control or processing, it needs to be divided into different QoS flows.
  • RLC Radio Link Control
  • RLC bearer In the New Radio (NR) standard protocol, the base station can configure an RLC entity and logical channel associated with the radio bearer through the information element (for example: RLC-BearerConfig) in the RRC message, usually the radio bearer is associated.
  • An RLC entity and logical channel of the RLC bearer is called an RLC bearer; wherein the RLC bearer configuration parameters may include the RLC entity configuration, the logical channel identifier (Logical Channel Identifier, LCID), the logical channel configuration and the associated bearer identifier.
  • the base station can configure the RLC entity and logical channel associated with the SLRB through the information element (for example: SL-RLC-BearerConfig) in the RRC message.
  • An RLC entity and logical channel associated with an SL radio bearer are usually referred to as an SL RLC bearer.
  • the size of the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiment of the present application. any restrictions.
  • At least one refers to one or more, and "a plurality” refers to two or more.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .
  • the term "and/or” is generally used to describe the association relationship between associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists alone , A and B exist at the same time, and B exists alone. It should be understood that the character "/" appearing in the embodiments of the present application generally indicates that the related objects before and after are an "or" relationship.
  • FIG. 1 shows a schematic structural diagram of a U2U relay communication system 100 .
  • the communication system 100 includes a first communication device 110 , a relay communication device 120 and a second communication device 130 .
  • the communication system further includes a wireless network device 140 .
  • the first communication device 110 may have a communication connection with the wireless network device 140
  • the second communication device 120 may also have a communication connection with the wireless network device 140
  • the first communication apparatus 110 and the relay communication apparatus 120 may respectively have communication connections with different wireless network devices.
  • the above-mentioned relay communication device, the first communication device and the second communication device are a kind of equipment with a wireless transceiver function, such as a vehicle-mounted communication device, a vehicle-mounted communication chip, a roadside unit or a communication in a roadside unit.
  • Apparatus, etc. may also refer to UE, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.
  • the relay communication device, the first communication device and the second communication device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital Processing (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, in-vehicle device, wearable device, terminal device in 5G network or future evolution of public land mobile communication
  • a terminal device in a network public land mobile network, PLMN), etc., is not limited in this embodiment of the present application.
  • the wireless network device in this embodiment of the present application may be any device having a function of sending and receiving communications.
  • the wireless network device may be a device that provides a wireless communication function service for a communication device, and is usually located on the network side, including but not limited to: a next-generation base station (gNodeB, gNB) in a fifth-generation (5th generation, 5G) communication system , the evolved node B (evolved node B, eNB) in the LTE system, the device that provides wireless communication services for terminal devices in the V2X communication system, and the wireless control in the cloud radio access network (CRAN) scenario devices, relay stations, in-vehicle devices, wearable devices, and network devices in future evolution networks, etc.
  • the specific implementation forms are not limited in the embodiments of the present application.
  • the wireless network device may be a device in a RAN, or in other words, a RAN node that accesses the communication apparatus to the wireless network.
  • a base station there can be listed: gNB, transmission reception point (TRP), transmission point (TP), evolved Node B (evolved Node B, eNB), home base station (For example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU), etc.
  • the wireless network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node and User plane CU node and DU node.
  • CU centralized unit
  • DU distributed unit
  • RAN device including a CU node and a DU node, or a control plane CU node and User plane CU node and DU node.
  • the wireless network device provides services for the cell, and the communication device communicates with the base station through transmission resources (for example, frequency domain resources, or time-frequency resources) used by the cell,
  • the cell may be a cell corresponding to the base station, and the cell may belong to a macro base station, It can also belong to a base station corresponding to a small cell, where the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc., These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.
  • the methods and apparatuses provided in the embodiments of this application can be used in various communication systems, such as a fourth generation (4th generation, 4G) communication system, a 4.5G communication system, a 5G communication system, a system that integrates multiple communication systems, or a future evolved communication system.
  • Communication system (such as 5.5G communication system or 6G communication system).
  • LTE long term evolution
  • NR new radio
  • WiFi wireless-fidelity
  • 3GPP 3rd generation partnership project
  • the communication system includes two side links, side link 1 and side link 2 .
  • the first communication device 110 is a sending device
  • the relay communication device 120 is a receiving device.
  • the relay communication device 120 is a transmitting device
  • the second communication device 130 is a receiving device. If the existing SLRB configuration method is used, the first communication device 110 and the relay communication device 120 use the configuration information provided by the base station respectively or use the respective default configuration information to configure the SLRB, the configuration method may cause the U2U relay communication system to transmit The data and/or signaling do not meet the QoS parameter requirements for end-to-end transmission between the first communication device 110 and the second communication device 130 .
  • the first communication device 110 configures the bearer configuration of the first sidelink (SL1) according to its own QoS parameter requirements, and the QoS parameter requirements refer to the communication between the first communication device 110 and the second communication device 130.
  • the QoS parameter requirements for end-to-end transmission between the first communication device 110 and the second communication device 130 need to be met.
  • the relay communication device 120 performs the bearer configuration of the second side link (SL2) according to its own QoS parameter requirements, and the QoS parameter requirement means that when the relay communication device 120 and the second communication device 130 transmit data, it needs to be The QoS parameter requirements for end-to-end transmission between the relay communication device 120 and the second communication device 130 are met.
  • the above-mentioned SLRB configuration method may not meet the QoS requirements during end-to-end data transmission between the first communication device 110 and the second communication device 130 .
  • the delay requirement of the QoS parameters of the first communication device 110 and the second communication device 130 is 10ms
  • the first communication device 110 configures the SLRB on SL1 to the delay requirement of 10ms
  • the end-to-end delay between the first communication device 110 and the second communication device 130 cannot be guaranteed.
  • FIG. 2 is a schematic diagram of a user plane protocol stack in a U2U relay communication system provided by an embodiment of the present application.
  • the user plane protocol stack of the first communication device 210 includes an application (Application, APP) layer for end-to-end peer-to-peer communication with the second communication device 230 and a sidelink service data adaptation protocol (SideLink-Service Data Adaptation Protocol, SL-SDAP) layer, sidelink packet data convergence protocol (SideLink-Packet Data Convergence Protocol, SL-PDCP) layer.
  • application Application
  • APP application
  • SL-SDAP sidelink service data adaptation protocol
  • SideLink-Packet Data Convergence Protocol SideLink-Packet Data Convergence Protocol
  • the user plane protocol stack of the first communication device 210 further includes an SL-RLC layer based on a side link connection for peer-to-peer communication with the relay communication device 220, a side link media access control (SideLink-Packet Media Access Control, SL-MAC) layer, side link physical layer (SideLink-Physical Layer, SL-PHY), optionally, the user plane protocol stack of the first communication device 210 further includes and the relay communication device 220, the first An adaptation layer (Adapt) for performing peer-to-peer communication between the two communication devices 230 .
  • Adapt An adaptation layer
  • the user plane protocol stack of the relay communication device 220 includes the SL-RLC layer, the SL-MAC layer, the SL-PHY layer based on the PC5 port connection for peer-to-peer communication with the first communication device 210, and the second communication device. SL-RLC layer, SL-MAC layer and SL-PHY layer based on PC5 port connection for peer-to-peer communication between 230.
  • the user plane protocol stack of the relay communication device 220 further includes an adaptation layer for performing peer-to-peer communication with the first communication device 210 and the second communication device 230 .
  • the user plane protocol stack of the second communication device 230 includes an APP layer (end-to-end) for peer-to-peer communication with the first communication device 210 , a SL-SDAP layer, a SL-PDCP layer, and a relay communication device 220
  • the user plane protocol stack of the second communication apparatus 230 further includes an adaptation layer.
  • the relay communication device 220 may only establish the RLC bearer, but not establish the corresponding SDAP and PDCP entities, and the bearer mapping between the QoS flow and the SLRB is completed at the SDAP layer, and also That is, the relay communication device cannot recognize and handle the remapping of the QoS flow from the bearer of SL1 to the bearer of SL2.
  • the relay communication device 220 After the relay communication device 220 receives the data packet from the first communication device 210, it may not be able to convert the mapping relationship between the QoS flow on SL1 and the RLC bearer into the corresponding mapping relationship on SL2, which may lead to relay communication Device 220 is unable to transmit data to communication device 230 with the correct RLC bearer configuration. This may cause the QoS flow data to not be correctly mapped to the E2E PDCP entity and SDAP entity, and may also cause the E2E QoS parameter requirements to not be guaranteed. Therefore, how to configure the SLRB in the U2U relay communication system has become an urgent problem to be solved. In view of the above problems, the embodiments of the present application propose the following solutions.
  • FIG. 3 shows a schematic flowchart of a communication method 300 according to an embodiment of the present application.
  • the communication method shown in FIG. 3 involves a first communication device that relays communication device and a second communication device.
  • the first communication device, the relay communication device and the second communication device may be the first communication device, the relay communication device and the second communication device in FIG. 1 and FIG. 2 of this application.
  • the method 300 includes but is not limited to the following steps:
  • the first communication apparatus sends a first message to the relay communication apparatus, where the first message includes configuration information of the RLC bearer of SL1.
  • the first communication apparatus and the relay communication apparatus establish at least one RLC bearer on the SL1 according to the RLC bearer configuration information of the SL1.
  • the RLC bearer configuration information of the SL1 is determined by the first communication apparatus according to the QoS parameter information of the SL1 (eg, the first QoS parameter information).
  • the end-to-end service quality requirement eg, fourth QoS parameter information
  • the first communication device may use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information to determine the need for SL1.
  • the quality of service requirements to be satisfied eg, the first QoS parameter information
  • the quality of service requirements to be satisfied by SL2 eg, the second QoS parameter information
  • the relay communication device needs to use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information.
  • the relay communication apparatus sends the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • the first message further includes first identification information, where the first identification information is used to identify the second communication apparatus, for example, the first identification information is a device identification number of the second communication apparatus.
  • the relay communication device since there may be more than one communication device performing unicast or multicast communication with the relay communication device, when the first communication device wants to communicate with the second communication device through the relay communication device, the relay communication device does not Know which communication device the current bearer configuration is used to communicate with, and send the first identification information to the relay communication device through the first communication device through the first message, so that the relay communication device can know according to the first identification information
  • the current RLC bearer configuration information is used for the communication between the first communication device and the second communication device.
  • the first message further includes first parameter information, where the first parameter information is used to determine configuration information of the RLC bearer of SL2.
  • the first parameter information includes second QoS parameter information and/or second identification information.
  • the second identification information includes PFI information corresponding to the RLC bearer of SL1.
  • the relay communication apparatus receives the second QoS parameter information sent by the first communication apparatus, and determines the configuration information of the RLC bearer on SL2 according to the second QoS parameter information.
  • the relay communication apparatus receives the second identification information sent by the first communication apparatus, and determines the second QoS parameter information of the corresponding SL2 according to the FPI information in the second identification information.
  • the method for the relay communication apparatus to determine the configuration information of the RLC bearer of SL2 according to the second QoS parameter information may be any of the following:
  • Bearer N:1 mapping for example, the relay communication device maps N RLC bearers of SL1 to 1 RLC bearer of SL2, after the mapping, there are N RLC bearers on SL1 and 1 RLC bearer on SL2;
  • bearer 1:N mapping for example, the relay communication device maps 1 RLC bearer of SL1 to N RLC bearers of SL2, after the mapping, there are N RLC bearers on SL1 and 1 RLC bearer on SL2 bear;
  • bearer 1:1 mapping for example, the relay communication device maps one RLC bearer of SL1 to one RLC bearer of SL2, after the mapping, there is one RLC bearer on SL1 and one RLC bearer on SL2 bear;
  • bearer N:M mapping for example, the relay communication apparatus maps N RLC bearers of SL1 to M RLC bearers of SL2, after the mapping, there are N RLC bearers on SL1 and M RLC bearers on SL2 bear.
  • the first message also includes third identification information, the third identification information is used to identify the bearer between the first communication device and the second communication device, and the third identification information has a corresponding relationship with the RLC bearer of SL1 , for example, the third identifier is a bearer identifier carried between the first communication device and the second communication device.
  • the relay communication apparatus may carry the third identification information in the received data from the first communication apparatus, and then send the data carrying the third identification information to the second communication apparatus.
  • the second communication apparatus may map the data to the corresponding PDCP according to the correspondence between the third identification information and the RLC bearer.
  • first identification information, first parameter information, and third identification information may also be sent by the first communication apparatus to the second communication apparatus through other messages.
  • the relay communication apparatus sends a second message to the second communication apparatus, where the second message includes configuration information of the RLC bearer of SL2.
  • the relay communication device needs to send the configuration information for determining the RLC bearer of SL2 to the second communication device, so that the relay communication device and the second communication device can establish at least one of the SL2 according to the RLC bearer configuration information of the SL2.
  • RLC bearer
  • the second message further includes third identification information.
  • the third identification information is used to identify the bearer between the first communication device and the second communication device, for example, the third identification is a bearer label carried between the first communication device and the second communication device.
  • the second communication apparatus may map the data to the corresponding PDCP according to the correspondence between the third identification information and the RLC bearer.
  • the above-mentioned third identification information may also be sent by the relay communication device to the second communication device through other messages.
  • the first communication apparatus sends a third message to the second communication apparatus through the relay communication apparatus.
  • the first communication apparatus carries the third message through the RRC message transmitted on SL1, and sends the third message to the relay communication apparatus.
  • the relay communication device After receiving the third message, the relay communication device carries the third message in the RRC message transmitted on SL2, and sends it to the second communication device.
  • the third message includes first configuration information, where the first configuration information includes PDCP configuration information and SDAP configuration information between the first communication device and the second communication device.
  • the end-to-end service quality requirement (eg, fourth QoS parameter) requirement from the first communication device to the second communication device needs to be met.
  • the first communication device determines the PDCP configuration information and SDAP configuration information between the first communication device and the second communication device according to the fourth QoS parameter information, and sends the PDCP configuration information and SDAP configuration information to the third communication device through the relay communication device.
  • Two communication devices so that the first communication device and the second communication device can establish PDCP and SDAP bearers according to the PDCP configuration information and the SDAP configuration information.
  • the third message further includes third identification information
  • the third identification information is used to identify the bearer between the first communication device and the second communication device, and the third identification information corresponds to the above-mentioned first configuration information.
  • the third identification information is the bearer label of the PDCP and SDAP bearers that need to be established for communication between the first communication device and the second communication device.
  • the second communication device maps the data to the corresponding PDCP by transmitting the correspondence between the bearer to be established and the first configuration information from the first communication device identified by the third identification information to the second communication device.
  • the above-mentioned third identification information may also be sent by the first communication device to the second communication device through the relay communication device through other messages.
  • FIG. 4 shows a schematic flowchart of a communication method 400 according to an embodiment of the present application.
  • the communication method shown in FIG. 4 involving a first communication device, a relay communication device and a second communication device.
  • the first communication device, the relay communication device and the second communication device may be the first communication device, the relay communication device and the second communication device in FIG. 1 , FIG. 2 and FIG. 3 of the application.
  • the method 400 includes but is not limited to the following steps:
  • the first communication device performs PDCP and SDAP configuration according to the fourth QoS parameter information, and the first communication device determines the configuration information of the RLC bearer on SL1 according to the first QoS parameter information.
  • the fourth QoS parameter information may be the QoS parameter information that needs to be satisfied for the end-to-end transmission between the first communication device and the second communication device when the first communication device transmits data to the second communication device through the relay communication device .
  • the first communication device may use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information to determine the The first QoS parameter information that needs to be satisfied when data transmission is performed on SL1 and the second QoS parameter information that needs to be satisfied when data transmission is performed on SL2.
  • the relay communication device may also use a preset algorithm (for example, according to the channels of SL1 and SL2) according to the fourth QoS parameter information. state information) respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2. Then, the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • a preset algorithm for example, according to the channels of SL1 and SL2
  • state information respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2.
  • the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • the first QoS parameter information or the second QoS parameter information may respectively include PC5 5G QoS Identifier (PC5 5G QoS Identifier, PQI), Allocation and Retention Priority (ARP), Guarantee Bit Rate (Guarantee Bit Rate) , GFBR) and other parameters related to performance requirements, wherein, exemplary: PQI is the ID of a QoS flow, and a PQI is used to identify a QoS flow; ARP contains the priority of the QoS flow and/ or preemption capability, the priority determines the importance of UE resource requests. When system resources are limited, ARP determines whether a QoS flow is accepted or rejected; GFBR means that the network guarantees that the QoS flow is provided on an average time window. bit rate.
  • PC5 5G QoS Identifier PC5 5G QoS Identifier
  • ARP Allocation and Retention Priority
  • Guarantee Bit Rate Guarantee Bit Rate
  • GFBR Guarantee Bit Rate
  • the determination of the first QoS parameter information and the second QoS parameter information may be performed on the first communication device, may also be performed on the first wireless network device connected to the first communication device, or may be performed on the relay communication device.
  • the first communication apparatus carries the fourth QoS parameter information in an RRC message and sends it to the RRC message.
  • the first wireless network device, the first wireless network device can use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information, respectively determine the SL1 to be satisfied when data transmission is performed.
  • the QoS parameter information is sent to the relay communication device; optionally, if the determination of the first QoS parameter information and the second QoS parameter information is performed at the first communication device, the first communication device may use the pre-defined QoS parameter information according to the fourth QoS parameter information.
  • the set algorithm (for example, according to the channel state information of SL1 and SL2) respectively determines the first QoS parameter information that needs to be satisfied during data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2, and then obtains The second QoS parameter information is sent to the relay communication device.
  • the first communication device sends the fourth QoS parameter information to the relay communication device through an RRC message or a PC5-S message.
  • the relay communication device after determining the first QoS parameter information and the second QoS parameter information, sends the determined first QoS parameter information, or the first QoS parameter information and the second QoS parameter information to the first communication device.
  • the configuration information of the at least one RLC bearer of the SL1 is used for the first communication apparatus to establish the at least one RLC bearer of the SL1 with the relay communication apparatus.
  • the SLRB bearer configuration may include some or all of the following:
  • SDAP configuration whether there is an SDAP header, whether it is the default SLRB, the mapping relationship between QoS flow and SLRB, and the communication mode (unicast, multicast or broadcast);
  • PDCP configuration packet loss timer duration, PDCP sequence number length, out-of-order transmission, etc.
  • RLC configuration RLC transmission mode, RLC sequence number length, maximum allowed ARQ retransmission times in RLC AM mode, etc.;
  • LCH configuration related parameters of logical channel prioritization (LCP, Logical Channel Prioritization), such as logical channel priority, limited bit rate (Prioritized Bit Rate, PBR), bucket size duration (Bucket Size Duration, BSD), etc., Whether to allow the indication of configured grant type 1, whether to enable HARQ feedback, the SR resource associated with the LCH, and the LCG to which it belongs.
  • LCP Logical Channel Prioritization
  • PBR Physical Bit Rate
  • Bucke Size Duration Buckcket Size Duration
  • the methods for obtaining the configuration information carried by at least one RLC of the SL1 are different.
  • the first communication apparatus is in a connected state, and the first communication apparatus may send the first QoS parameter information to the wireless network device based on a sidelink user equipment identification (Sidelink UEInformation, SUI) message.
  • the first QoS parameter information includes the identification information PFI of each QoS flow and the corresponding QoS parameters.
  • the network device performs SLRB configuration for the first communication device according to the first QoS parameter information reported by the first communication device, and sends the SLRB-related configuration information to the first communication device through an RRC message, thereby determining the SLRB borne by at least one RLC of the SL1. configuration information.
  • the first communication apparatus is in an idle state or an inactive state, and the first communication apparatus obtains the SLRB-related configuration according to the bearer configuration information in the system message broadcast by the wireless network device, so as to determine at least the above SL1 Configuration information carried by an RLC.
  • the first communication apparatus may obtain the corresponding SLRB-related configuration information from the bearer configuration information in the system message broadcast by the wireless network device according to the first QoS parameter information.
  • the first communication apparatus is in a non-coverage state, and the first communication apparatus determines configuration information of at least one RLC bearer of SL1 according to preconfigured bearer configuration information. For example, the first communication apparatus may acquire corresponding SLRB-related configuration information from pre-stored or pre-obtained bearer configuration information according to the first QoS parameter information.
  • the first communication apparatus sends a third message to the second communication apparatus through the relay communication apparatus.
  • the first communication apparatus carries the third message through the RRC message transmitted on SL1, and sends the third message to the relay communication apparatus.
  • the relay communication device After receiving the third message, the relay communication device carries the third message in the RRC message transmitted on SL2, and sends it to the second communication device.
  • the third message may be an RRCReconfigurationSidelink message or other PC5 RRC messages or PC5 (PC5-Signaling, PC5) messages.
  • the third message includes first configuration information, and the first configuration information is PDCP and SDAP configuration information from the first communication device to the second communication device, and the second communication device can receive the first configuration according to the second communication device. information, and map the received data to the corresponding PDCP entity.
  • the third message further includes third identification information, where the third identification information is bearer identification information from the first communication device to the second communication device, wherein the third identification information has a corresponding relationship with the first configuration information.
  • the second communication apparatus may identify the corresponding PDCP entity according to the third identification information, and the third identification information may be the information element SLRB-PC5-ConfigIndex defined in the protocol or other forms.
  • the second communication device may map the received data to the corresponding relationship between the bearer and the first configuration information to be established for transmission from the first communication device to the second communication device identified by the received third identification information. the corresponding PDCP entity.
  • the first communication apparatus sends a first message to the relay communication apparatus.
  • the first message may be an RRCReconfigurationSidelink message or other PC5 RRC messages or PC5-S messages.
  • the first message includes first identification information, where the first identification information is used to identify the second communication apparatus, for example, the first identification information is a device identification number of the second communication apparatus.
  • the relay communication device does not know which communication device the current bearer configuration is used to communicate with.
  • the first communication device sends first identification information to the relay communication device through a first message, where the first identification information identifies that the current RLC bearer configuration information is used for communication between the first communication device and the second communication device.
  • the first message further includes configuration information borne by at least one RLC of SL1
  • the configuration information borne by the RLC is used by the first communication apparatus and the relay communication apparatus to establish at least one RLC bearer on the SL1. It should be understood that in order to be able to communicate, the sender and the receiver need to have a consistent SLRB bearer configuration for controlling the sending or receiving of data, so the first communication device needs to send the configuration information of at least one RLC bearer of the SL1 to the relay communication device.
  • the first message further includes first parameter information, where the first parameter information includes second QoS parameter information.
  • the second QoS parameter information includes QoS parameter requirement information that needs to be satisfied by one or more RLCs on the first sidelink carried on the second sidelink;
  • the second QoS parameter information determines the third QoS parameter information on SL2, and determines the configuration information of an RLC bearer of SL2 according to the third QoS parameter information.
  • the first parameter information further includes second identification information.
  • the second identification information is used for the relay communication device to determine the QoS parameter requirements that each RLC bearer on SL1 should meet on SL2.
  • the second identification information is PC5 quality of service flow identification (PFI) corresponding to each RLC bearer on SL1.
  • PFI quality of service flow identification
  • the relay communication device determines the corresponding QoS flow according to the corresponding PFI of each RLC bearer sent by the first communication device, and then determines the QoS parameter requirements that each RLC bearer of SL 1 should meet on SL 2 according to the QoS flow.
  • the first message further includes third identification information.
  • the third identification information identifies the correspondence between the bearer between the first communication device and the second communication device and the RLC bearer on SL1, and the relay communication device can assign the RLC of each SL1 according to the third identification information
  • the data packet transmitted by the bearer carries the bearer identification information between the first communication device and the second communication device.
  • the relay communication apparatus establishes the bearer of SL1, and determines the configuration information of an RLC bearer of SL2 according to the first parameter information.
  • the relay communication apparatus configures the RLC bearer of SL1 according to the configuration information of at least one RLC bearer of SL1 sent by the first communication apparatus, so that the first sidelink can communicate.
  • the relay communication device determines the QoS flow corresponding to each QFI according to the associated second identification information (for example, each RLC bears the QFI information of all QoS flows) sent by the first communication device, and then according to the determined
  • the QoS flow determines the QoS parameter requirements that the QoS flow needs to meet for transmission on SL2. That is, the operation of determining the QoS parameter requirements that the RLC bearer on each SL 1 should meet on SL 2 is completed.
  • the second QoS parameter information received by the relay communication device directly includes the QoS parameter requirements that should be met by the RLC bearer on SL1 on SL2, and the relay communication device does not need to use the received second identifier.
  • the information determines the QoS parameter requirements that need to be met for data transmission on SL2.
  • the relay communication apparatus further performs N:1 mapping according to the second identification information or the second QoS parameter information, for example, the relay communication apparatus maps N RLC bearers of SL1 to one RLC bearer of SL2, After the mapping, there are N RLC bearers on SL1 and one RLC bearer on SL2.
  • the relay communication apparatus determines the third QoS parameter information on SL2. Since one or more bearers on SL 1 are finally aggregated into one bearer on SL 2, the QoS parameter requirements of this one RLC bearer on SL 2 should consider all N bearers before aggregation. For example, two bearers SLRB1 and SRLB2 on SL1, wherein QoS flow1 and QoS flow2 are transmitted on SLRB1, and QoS flow3 and QoS flow4 are transmitted on SLRB2.
  • the second identification information corresponding to these four QoS flows are PFI1, PFI2, PFI3 and PFI4 respectively. .
  • the relay communication device obtains 4 QoS parameter requirements corresponding to SL2 according to the second identification information.
  • the relay communication device needs to consider the 4 QoS parameter requirements corresponding to the SL2 to obtain the first QoS parameter requirements on the SL2.
  • the relay communication device can determine the QoS parameters on SL 2 according to any one of the following methods, that is, the third QoS parameter information, to ensure the QoS parameter requirements of E2E as much as possible:
  • the QoS parameters corresponding to the QoS flow with the highest priority
  • PDB Packet Delay Budget
  • GFBR Guaranteed Flow Bit Rate
  • the QoS parameter corresponding to the QoS flow with the lowest packet error rate (Packet Error Rate, PER) is required;
  • each requirement is based on the highest QoS parameter.
  • the relay communication device may determine, according to the third QoS parameter information, an RLC bearer configuration information of the SL2, optionally, the configuration information of an RLC bearer of the SL2 is used for the second
  • the communication device establishes an RLC bearer on SL2 with the relay communication device.
  • the specific configuration method for determining the RLC bearer configuration from the third QoS parameter information is determined according to the state of the relay communication device. For a detailed description, please refer to step S301, which will not be repeated here.
  • the relay communication apparatus sends a second message to the second communication apparatus.
  • the second message includes configuration information carried by an RLC of SL2.
  • the second communication apparatus configures the RLC bearer of SL2 according to the received configuration information of an RLC bearer of SL2.
  • the first communication device carries the third identification information in the Adapatation Header of each data packet, that is, the identification information of the bearer between the first communication device and the second communication device, and then forwards it to the Adapatation Header through the relay communication device.
  • the second communication device After receiving the data packet, the second communication device can map it to the corresponding PDCP entity according to the third identification information carried in the data packet, and finally the second communication device correctly submits the data to the SDAP entity according to the first configuration information, thereby completing the first Data transmission from a communication device to a second communication device.
  • the communication method 400 of the embodiment of the present application needs to have an adaptation layer in the first communication device, the relay communication device, and the second communication device, and the adaptation layer is used for adding and identifying the adaptation header Adapatation Header of the data packet. If the first message further includes the third identification information, the first communication device does not carry the third identification information in the Adapatation Header of the data packet, but the relay communication device forwards the data packet to the second communication device at each The third identification information is carried in the Adapatation Header of each data packet. After receiving the data packet, the second communication apparatus may map to the corresponding PDCP entity according to the third identification information carried in the data packet.
  • the second communication device correctly delivers the data to the SDAP entity according to the first configuration information, thereby completing the communication between the first communication device and the second communication device. Since the communication method 400 of the embodiment of the present application only needs to add and identify the Adapatation Headerde of the data packet between the relay communication device and the second communication device, it only needs to have an adaptation layer between the relay communication device and the second communication device. , there is no need for an adaptation layer between the relay communication device and the first communication device.
  • FIG. 5 shows a schematic flowchart of a communication method 500 according to an embodiment of the present application.
  • the first communication device, the relay communication device and the second communication device may be the first communication device, the relay communication device and the second communication device in FIG. 1 , FIG. 2 and FIG. 3 of the application.
  • the method 500 includes but is not limited to the following steps:
  • the first communication apparatus performs PDCP and SDAP configuration according to the fourth QoS parameter information, and the first communication apparatus determines the configuration information of the RLC bearer of SL1 according to the first QoS parameter information.
  • the fourth QoS parameter information may be the QoS parameter information that needs to be satisfied for the end-to-end transmission between the first communication device and the second communication device when the first communication device transmits data to the second communication device through the relay communication device .
  • the first communication device may use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information to determine the The first QoS parameter information that needs to be satisfied when data transmission is performed on SL1 and the second QoS parameter information that needs to be satisfied when data transmission is performed on SL2.
  • the relay communication device may also use a preset algorithm (for example, according to the channels of SL1 and SL2) according to the fourth QoS parameter information. state information) respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2. Then, the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • a preset algorithm for example, according to the channels of SL1 and SL2
  • state information respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2.
  • the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • the first QoS parameter information or the second QoS parameter information may respectively include PC5 5G QoS Identifier (PC5 5G QoS Identifier, PQI), Allocation and Retention Priority (ARP), Guarantee Bit Rate (Guarantee Bit Rate) , GFBR) and other parameters related to performance requirements, wherein, exemplary: PQI is the ID of a QoS flow, and a PQI is used to identify a QoS flow; ARP contains the priority of the QoS flow and/ or preemption capability, the priority determines the importance of UE resource requests. When system resources are limited, ARP determines whether a QoS flow is accepted or rejected; GFBR means that the network guarantees that the QoS flow is provided on an average time window. bit rate.
  • PC5 5G QoS Identifier PC5 5G QoS Identifier
  • ARP Allocation and Retention Priority
  • Guarantee Bit Rate Guarantee Bit Rate
  • GFBR Guarantee Bit Rate
  • the determination of the first QoS parameter information and the second QoS parameter information may be performed on the first communication device, may be performed on the first wireless network device connected to the first communication device, or may be performed on the relay communication device. performed on the device.
  • the specific determination method please refer to the description of step S401, which will not be repeated here.
  • the configuration information of the at least one RLC bearer of the SL1 is used for the first communication apparatus and the relay communication apparatus to establish one or more RLC bearers of the SL1.
  • the methods for obtaining the configuration information carried by at least one RLC of SL1 are different.
  • the obtaining method please refer to S401, which will not be repeated here.
  • the first communication device sends a third message to the second communication device through the relay communication device.
  • the third message may be an RRCReconfigurationSidelink message or other dedicated RRC messages or PC5-S messages.
  • the third message further includes first configuration information, where the first configuration information is PDCP and SDAP bearer configuration information from the first communication device to the second communication device, and the second communication device can Configuration information to map the received data to the corresponding PDCP entity.
  • the third message includes third identification information, where the third identification information is bearer identification information from the first communication device to the second communication device, wherein the third identification information has a corresponding relationship with the first configuration information, and the The third identification information also has a corresponding relationship with the RLC bearer of SL1.
  • the second communication apparatus may identify the corresponding PDCP entity according to the third identification information, and the third identification information may be the information element SLRB-PC5-ConfigIndex defined in the protocol or other forms.
  • the second communication device may map the received data to the corresponding relationship between the bearer and the first configuration information to be established for transmission from the first communication device to the second communication device identified by the received third identification information. the corresponding PDCP entity.
  • the first communication apparatus sends a first message to the second communication apparatus.
  • the first message may be an RRCReconfigurationSidelink message or other dedicated RRC messages or PC5-S messages.
  • the first message includes first identification information, where the first identification information is used to identify the second communication apparatus, for example, the first identification information is a device identification number of the second communication apparatus.
  • the relay communication device does not know which communication device the current bearer configuration is used to communicate with.
  • the first communication device sends first identification information to the relay communication device through a first message, where the first identification information identifies that the current RLC bearer configuration information is used for communication between the first communication device and the second communication device.
  • the first message further includes configuration information of at least one RLC bearer of SL1.
  • the configuration information of the at least one RLC bearer of the SL1 is used by the first communication apparatus and the relay communication apparatus to establish one or more RLC bearers on the SL1. It should be understood that, in order to ensure communication, the sender and the receiver need to have a consistent SLRB bearer configuration for controlling the sending or receiving of data, so the first communication device needs to send the configuration information of at least one RLC bearer of the SL1 to the relay communication device.
  • the first message further includes third identification information.
  • the third identification information identifies the correspondence between the bearer between the first communication device and the second communication device and the RLC bearer on SL1, and the relay communication device can assign the RLC of each SL1 according to the third identification information
  • the data packet transmitted by the bearer carries bearer identification information between the first communication device and the second communication device.
  • the relay communication apparatus establishes the bearer of SL1, and determines the configuration information of the RLC bearer of SL2 according to the second QoS parameter information.
  • the relay communication apparatus may establish the bearer of SL1 according to the configuration information of the at least one RLC bearer of the SL1.
  • the relay communication apparatus determines configuration information of at least one RLC bearer of SL2 according to the second QoS parameter information, and establishes a bearer on SL2 according to the configuration information of at least one RLC bearer of SL2.
  • the second QoS parameter information is determined by the fourth QoS parameter information according to a preset algorithm (for example, according to the channel state information of SL1 and SL2), and the quality of service requirements that need to be met for data transmission on SL2 are determined.
  • the purpose is to meet the first When transmitting data from a communication device to a second communication device, the service quality requirement of end-to-end transmission can be met.
  • the specific configuration method for determining the configuration information of the at least one RLC bearer of the SL2 based on the second QoS parameter information is determined according to the state of the relay communication device. For a detailed description, please refer to step S401.
  • the configuration information of the at least one RLC bearer of the SL2 is used for the second communication apparatus and the relay communication apparatus to establish at least one RLC bearer on the SL2.
  • the relay communication apparatus sends a second message to the second communication apparatus.
  • the second message includes configuration information of at least one RLC bearer of SL2.
  • the second communication apparatus configures the RLC bearer of SL2 according to the received configuration information of at least one RLC bearer of the SL2.
  • the relay communication system may send the second identification information and the third identification information in the Adaptation Header of each data packet to the relay communication system based on the above-mentioned bearer configuration.
  • the relay communication apparatus may map the data packets to the corresponding SL2 bearers according to the second identification information (eg, PFI) carried in each data packet.
  • the relay communication device may also remove the second identification information in the data packet, so that the data packet only carries the third identification information, and then send the data packet to the second communication device.
  • the second communication device may map the data packet to the corresponding PDCP entity according to the third identification information carried in the data packet.
  • the second communication device submits the data to the corresponding SDAP entity according to the first configuration information, thereby completing the data transmission from the first communication device to the second communication device.
  • the communication method 500 in this embodiment of the present application can accomplish the purpose of the first communication device communicating with the second communication device through the relay communication device.
  • the first communication device does not carry the third identification information in the data packet Adapatation Header, but the relay communication device forwards the data packet to the second communication device when the data packet is forwarded. , and the third identification information is carried in the Adapatation Header of each data packet.
  • the second communication apparatus may map to the corresponding PDCP entity according to the third identification information carried in the data packet.
  • the second communication device submits the data to the corresponding SDAP entity according to the first configuration information, thereby completing the communication between the first communication device and the second communication device.
  • the communication method 500 of the embodiment of the present application needs to have an adaptation layer in the first communication device, the relay communication device, and the second communication device, and the adaptation layer is used for adding and identifying the Adapatation Headerde of the data packet.
  • FIG. 6 shows a schematic flowchart of a communication method 600 according to an embodiment of the present application.
  • the first communication device, the relay communication device and the second communication device may be the first communication device, the relay communication device and the second communication device in FIG. 1 , FIG. 2 and FIG. 3 of the application.
  • the method 600 includes but is not limited to the following steps:
  • the first communication device performs PDCP and SDAP configuration according to the fourth QoS parameter information; the first communication device determines the configuration information of an RLC bearer of SL1 according to the first QoS parameter information.
  • the fourth QoS parameter information may be the QoS parameter information that needs to be satisfied for the end-to-end transmission between the first communication device and the second communication device when the first communication device transmits data to the second communication device through the relay communication device .
  • the first communication device may use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information to determine the The first QoS parameter information that needs to be satisfied when data transmission is performed on SL1 and the second QoS parameter information that needs to be satisfied when data transmission is performed on SL2.
  • the relay communication device may also use a preset algorithm (for example, according to the channels of SL1 and SL2) according to the fourth QoS parameter information. state information) respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2. Then, the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • a preset algorithm for example, according to the channels of SL1 and SL2
  • state information respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2.
  • the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • the first QoS parameter information or the second QoS parameter information may respectively include PC5 5G QoS Identifier (PC5 5G QoS Identifier, PQI), Allocation and Retention Priority (ARP), Guarantee Bit Rate (Guarantee Bit Rate) , GFBR) and other parameters related to performance requirements, wherein, exemplary: PQI is the ID of a QoS flow, and a PQI is used to identify a QoS flow; ARP contains the priority of the QoS flow and/ or preemption capability, the priority determines the importance of UE resource requests. When system resources are limited, ARP determines whether a QoS flow is accepted or rejected; GFBR means that the network guarantees that the QoS flow is provided on an average time window. bit rate.
  • PC5 5G QoS Identifier PC5 5G QoS Identifier
  • ARP Allocation and Retention Priority
  • Guarantee Bit Rate Guarantee Bit Rate
  • GFBR Guarantee Bit Rate
  • the determination of the first QoS parameter information and the second QoS parameter information may be performed on the first communication device, may be performed on the first wireless network device connected to the first communication device, or may be performed on the relay communication device. performed on the device.
  • the specific determination method please refer to the description of step S401, which will not be repeated here.
  • the configuration information of an RLC bearer of the SL1 is used for the first communication apparatus and the relay communication apparatus to establish an RLC bearer of the SL1.
  • the sender and the receiver need to have a consistent SLRB bearer configuration for controlling the sending or receiving of data.
  • SLRB bearer configuration please refer to S401, which will not be repeated here.
  • the methods for obtaining the configuration information carried by one RLC of SL1 are different.
  • the obtaining method please refer to S401, which will not be repeated here.
  • the first communication device sends a third message to the second communication device through the relay communication device.
  • the third message may be an RRCReconfigurationSidelink message or other PC5 RRC messages or PC5 signaling (PC5-Signaling, PC5) messages.
  • the third message further includes first configuration information, where the first configuration information is PDCP and SDAP bearer configuration information from the first communication device to the second communication device, and the second communication device can A configuration information that maps the received data to the corresponding PDCP entity.
  • the third message includes third identification information, where the third identification information is bearer identification information from the first communication device to the second communication device, wherein the third identification information is in one-to-one correspondence with the first configuration information, and the The third identification information is also in one-to-one correspondence with the RLC bearer of SL1.
  • the second communication apparatus may identify the corresponding PDCP entity according to the third identification information, and the third identification information may be the information element SLRB-PC5-ConfigIndex defined in the protocol or other forms.
  • the second communication device may map the received data to the corresponding relationship between the bearer and the first configuration information to be established for transmission from the first communication device to the second communication device identified by the received third identification information. the corresponding PDCP entity.
  • the first communication apparatus sends a first message to the second communication apparatus.
  • the first message may be an RRCReconfigurationSidelink message or other PC5 RRC messages or PC5-S messages.
  • the first message includes first identification information, where the first identification information is used to identify the second communication apparatus, for example, the first identification information is a device identification number of the second communication apparatus.
  • the relay communication device does not know which communication device the current bearer configuration is used to communicate with.
  • the first communication device sends first identification information to the relay communication device through a first message, where the first identification information identifies that the current RLC bearer configuration information is used for communication between the first communication device and the second communication device.
  • the first message further includes configuration information carried by an RLC of SL1.
  • the configuration information of an RLC bearer of the SL1 is used by the first communication apparatus and the relay communication apparatus to establish an RLC bearer of the SL1. It should be understood that in order to ensure communication, the sender and the receiver need to have a consistent SLRB bearer configuration for controlling the sending or receiving of data, so the first communication device needs to send the configuration information of an RLC bearer of the SL1 to the relay communication device.
  • the first message further includes third identification information.
  • the third identification information is bearer identification information from the first communication device to the second communication device, and the relay communication device can carry the third identification information in a data packet and send it to the second communication device, and the second communication device
  • the data packet can be mapped to the corresponding PDCP entity according to the third identification information in the data.
  • the relay communication apparatus establishes the bearer on SL1, and after 1:N mapping, determines the bearer configuration of SL2 according to the second identification information in each RLC bearer.
  • the relay communication apparatus After the relay communication apparatus receives the configuration information of an RLC bearer of SL1 sent from the first communication apparatus, the relay communication apparatus establishes a bearer on SL1 according to the configuration information of an RLC bearer of the SL1.
  • the relay communication apparatus maps one RLC bearer on SL1 to N RLC bearers of SL2, and determines its second QoS parameter information according to the second identification information (eg, PFI information) contained in the N RLC bearers of SL2.
  • the second identification information eg, PFI information
  • an RLC bearer SLRB1 on SL1 transmits QoS flow1 and QoS flow2, then the one RLC bearer SLRB1 contains second identification information, and the second identification information can be PFI1 and PFI2, and PFI1 and PFI2 are QoS flow1 and QoSf respectively The logo of low2.
  • the relay communication device maps the bearer SLRB1 of SL1 to SLRB2 and SLRB3 on SL2 according to PFI1 and PFI2, QoS flow1 is transmitted on SLRB2, and QoS flow2 is transmitted on SLRB3.
  • the relay communication apparatus determines second QoS parameter information on SL2 according to PFI1 and PFI2, and determines configuration information of at least one RLC bearer of SL2 according to the second QoS parameter information.
  • the specific configuration method for determining the configuration information of at least one RLC bearer of SL2 based on the second QoS parameter information is determined according to the state of the relay communication device. For a detailed description, please refer to step S401.
  • the configuration information of the at least one RLC bearer of the SL2 is used for the second communication apparatus to establish at least one RLC bearer on the SL2 with the relay communication apparatus.
  • the relay communication apparatus sends a second message to the second communication apparatus.
  • the second message includes configuration information of at least one RLC bearer of SL2.
  • the second communication apparatus configures the RLC bearer of SL2 according to the received configuration information of at least one RLC bearer of SL2.
  • the second message further includes third identification information.
  • the third identification information has a one-to-one correspondence with the RLC bearer on SL2.
  • the second communication apparatus delivers the data in different RLB bearers on SL2 to the corresponding PDCP entity according to the third identification information.
  • the first communication device sends the second identification information in the Adaptation Header of each data packet to the relay communication device.
  • the relay communication apparatus may map the data packets to the corresponding SL2 bearers according to the second identification information carried in each data packet.
  • the relay communication device may remove the second identification information in the data packet, and forward the data packet to the second communication device.
  • the second communication apparatus may map the data packet to the corresponding PDCP entity according to the third identification information carried in the second message.
  • the second communication device submits the data to the corresponding SDAP entity according to the first configuration information, thereby completing the communication between the first communication device and the second communication device. Since the communication method 600 in this embodiment of the present application is one bearer of SL1 mapped to N bearers of SL2, it is not necessary to add and identify the Adapatation Header of the data packet between the relay communication device and the second communication device, and relay communication is not required. There is an adaptation layer between the device and the second communication device, and there is no need to carry the third identification information in the Adaptation Header of the data packet.
  • FIG. 7 shows a schematic flowchart of a communication method 700 according to an embodiment of the present application.
  • a first communication device is involved, A relay communication device and a second communication device.
  • the first communication device, the relay communication device and the second communication device may be the first communication device, the relay communication device and the second communication device in FIG. 1 , FIG. 2 and FIG. 3 of the application.
  • the method 700 includes but is not limited to the following steps:
  • the first communication device performs PDCP and SDAP configuration according to the fourth QoS parameter information; the first communication device determines configuration information of an RLC bearer of SL1 according to the first QoS parameter information.
  • the fourth QoS parameter information may be the QoS parameter information that needs to be satisfied for the end-to-end transmission between the first communication device and the second communication device when the first communication device transmits data to the second communication device through the relay communication device .
  • the first communication device may use a preset algorithm (for example, according to the channel state information of SL1 and SL2) according to the fourth QoS parameter information to determine the The first QoS parameter information that needs to be satisfied when data transmission is performed on SL1 and the second QoS parameter information that needs to be satisfied when data transmission is performed on SL2.
  • the relay communication device may also use a preset algorithm (for example, according to the channels of SL1 and SL2) according to the fourth QoS parameter information. state information) respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2. Then, the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • a preset algorithm for example, according to the channels of SL1 and SL2
  • state information respectively determine the first QoS parameter information that needs to be satisfied for data transmission on SL1 and the second QoS parameter information that needs to be satisfied for data transmission on SL2.
  • the relay communication apparatus may send the determined first QoS parameter information and/or the second QoS parameter information to the first communication apparatus.
  • the first QoS parameter information or the second QoS parameter information may respectively include PC5 5G QoS Identifier (PC5 5G QoS Identifier, PQI), Allocation and Retention Priority (ARP), Guarantee Bit Rate (Guarantee Bit Rate) , GFBR) and other parameters related to performance requirements, wherein, exemplary: PQI is the ID of a QoS flow, and a PQI is used to identify a QoS flow; ARP contains the priority of the QoS flow and/ or preemption capability, the priority determines the importance of UE resource requests. When system resources are limited, ARP determines whether a QoS flow is accepted or rejected; GFBR means that the network guarantees that the QoS flow is provided on an average time window. bit rate.
  • PC5 5G QoS Identifier PC5 5G QoS Identifier
  • ARP Allocation and Retention Priority
  • Guarantee Bit Rate Guarantee Bit Rate
  • GFBR Guarantee Bit Rate
  • the determination of the first QoS parameter information and the second QoS parameter information may be performed on the first communication device, may be performed on the first wireless network device connected to the first communication device, or may be performed on the relay communication device. performed on the device.
  • the specific determination method please refer to the description of step S401, which will not be repeated here.
  • the configuration information of an RLC bearer of the SL1 is used for the first communication apparatus and the relay communication apparatus to establish an RLC bearer of the SL1.
  • the sender and the receiver need to have a consistent SLRB bearer configuration for controlling the sending or receiving of data.
  • SLRB bearer configuration please refer to S401, which will not be repeated here.
  • the methods for obtaining the configuration information carried by one RLC of SL1 are different.
  • the obtaining method please refer to S401, which will not be repeated here.
  • the first communication apparatus sends a third message to the second communication apparatus through the relay communication apparatus.
  • the third message may be an RRCReconfigurationSidelink message or other PC5 RRC messages or PC5 signaling (PC5-Signaling, PC5) messages.
  • the third message further includes first configuration information, where the first configuration information is PDCP and SDAP bearer configuration information from the first communication device to the second communication device, and the second communication device can A configuration information that maps the received data to the corresponding PDCP entity. .
  • the third message includes third identification information, where the third identification information is bearer identification information from the first communication device to the second communication device, wherein the third identification information is in one-to-one correspondence with the first configuration information, and the The third identification information is also in one-to-one correspondence with the RLC bearer of SL1.
  • the second communication apparatus may identify the corresponding PDCP entity according to the third identification information, and the third identification information may be the information element SLRB-PC5-ConfigIndex defined in the protocol or other forms.
  • the second communication device may map the received data to the corresponding relationship between the bearer and the first configuration information to be established for transmission from the first communication device to the second communication device identified by the received third identification information. the corresponding PDCP entity.
  • the first communication apparatus sends a first message to the second communication apparatus.
  • the first message may be an RRCReconfigurationSidelink message or other PC5 RRC messages or PC5-S messages.
  • the first message includes first identification information, where the first identification information is used to identify the second communication apparatus, for example, the first identification information is a device identification number of the second communication apparatus.
  • the relay communication device does not know which communication device the current bearer configuration is used to communicate with.
  • the first communication device sends first identification information to the relay communication device through a first message, where the first identification information identifies that the current RLC bearer configuration information is used for communication between the first communication device and the second communication device.
  • the first message further includes configuration information carried by an RLC of SL1.
  • the configuration information of an RLC bearer of the SL1 is used by the first communication device and the relay communication device to establish an RLC bearer on the SL1. It should be understood that in order to ensure communication, the sender and the receiver need to have a consistent SLRB bearer configuration for controlling the sending or receiving of data, so the first communication device needs to send the configuration information of an RLC bearer of the SL1 to the relay communication device.
  • the first parameter information further includes second identification information.
  • the second identification information is a PC5 quality of service flow identification (PFI) corresponding to an RLC bearer on SL1.
  • PFI quality of service flow identification
  • the relay communication device determines the corresponding QoS flow according to the PFI corresponding to an RLC bearer sent by the first communication device, and then determines the QoS parameter requirements that an RLC bearer on SL 1 should meet on SL 2 according to the QoS flow.
  • the first message further includes third identification information.
  • the third identification information is bearer identification information from the first communication device to the second communication device, and the second communication device can transmit the request from the first communication device to the second communication device according to the received third identification information.
  • the established correspondence between the bearer and the first configuration information maps the received data to the corresponding PDCP entity. .
  • the relay communication apparatus establishes the bearer on SL1, and after 1:1 mapping, determines the configuration information of an RLC bearer of SL2 according to the second QoS parameter information on SL2.
  • the relay communication device after the relay communication device receives the configuration information of an RLC bearer of SL1 sent from the first communication device, the relay communication device establishes a bearer on SL1 according to the configuration information of an RLC bearer of the SL1.
  • the relay communication device maps one bearer on SL1 to one bearer on SL2 one by one.
  • the relay communication apparatus determines the second QoS parameter information on SL2 according to the second identification information corresponding to an RLC bearer on SL1, and determines the second parameter information on SL2 according to the second QoS parameter information.
  • a bearer SLRB1 on L1 transmits QoS flow1 and QoS flow2 on it, and the corresponding PC5 QoS flow identifiers are PFI1 and PFI2 respectively.
  • the relay communication device maps the bearer SLRB1 of SL1 to SLRB2 of SL2 one-to-one, wherein QoS flow1 and QoS flow2 are transmitted on SLRB2. If the first parameter information includes the second identification information, the relay communication device determines the second QoS parameter information on the SL2 according to the PFI1 and PFI2 of the QoS flow1 and QoS flow2 in the second identification information, and determines the SL2 according to the second QoS parameter information configuration information carried by an RLC.
  • the configuration information of an RLC bearer of SL2 is directly determined according to the QoS parameter information in the first parameter information.
  • the specific configuration method for determining the configuration information of an RLC bearer on SL2 based on the second QoS parameter information is determined according to the state of the relay communication device. For a detailed description, please refer to step S401.
  • the configuration information of an RLC bearer of the SL2 is used for the second communication apparatus to establish an RLC bearer on the SL2 with the relay communication apparatus.
  • the relay communication apparatus sends a second message to the second communication apparatus.
  • the second message includes configuration information carried by an RLC of SL2.
  • the second communication apparatus performs RLC bearer configuration for SL2 according to the received configuration information of an RLC bearer on SL2.
  • the second message further includes third identification information.
  • the third identification information has a one-to-one correspondence with the RLC bearer on SL2.
  • the second communication apparatus delivers the received data packet to the corresponding PDCP entity according to the third identification information.
  • the first communication device sends the data packet to the second communication device through the relay communication device.
  • the second communication apparatus may map the data packet to the corresponding PDCP entity according to the third identification information corresponding to a bearer of SL2.
  • the second communication device submits the data to the corresponding SDAP entity according to the first configuration information, thereby completing the communication between the first communication device and the second communication device.
  • the communication method 700 in this embodiment of the present application is a bearer of SL1 mapped to a bearer of SL2, there is no need for adaptation between the first communication device and the relay communication device and between the relay communication device and the second communication device layer, and does not need to carry additional identification information, such as third identification information and second identification information, in the data packet.
  • the communication method 700 in this embodiment of the present application can accomplish the purpose of the first communication apparatus communicating with the second communication apparatus through the relay communication apparatus.
  • the foregoing first communication apparatus, the foregoing relay communication apparatus, and the foregoing second communication apparatus include corresponding hardware structures and/or software modules for performing each function.
  • the units and method steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.
  • FIG. 8 , FIG. 9 and FIG. 10 are schematic block diagrams of possible communication apparatuses provided by the embodiments of the present application. These communication apparatuses can be used to respectively implement the functions of the first communication apparatus, the relay communication apparatus and the second communication apparatus in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.
  • the communication device may be the first communication device, the relay communication device and the second communication device themselves in the above method embodiments, or may be applied to the first communication device, the relay communication device and the second communication device itself.
  • a module in a second communication device may be the first communication device, the relay communication device and the second communication device itself.
  • the communication apparatus 800 includes a processing module 810 and a transceiver module 820 .
  • the communication apparatus 800 is configured to implement the function of the first communication apparatus in the embodiment corresponding to FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the communication device 800 When the communication device 800 is used to implement the function of the first communication device in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 , exemplarily:
  • the processing module 810 is configured to configure PDCP and SDAP according to the fourth QoS parameter information.
  • the processing module 810 is further configured to determine configuration information of at least one RLC bearer of the SL1 according to the first QoS parameter information.
  • the processing module 810 is further configured to establish a bearer on SL1 according to the configuration information of at least one RLC bearer of SL1.
  • processing module 810 is further configured to carry the third identification information and/or the second identification information in the first data unit.
  • the transceiver module 820 is further configured to send a third message to the second communication device.
  • the third message may be an RRCReconfigurationSidelink message.
  • the third message further includes first configuration information, where the first configuration information is PDCP and SDAP bearer configuration information from the first communication device to the second communication device.
  • the third message includes third identification information, where the third identification information is bearer identification information from the first communication device to the second communication device, wherein the third identification information is in one-to-one correspondence with the first configuration information, and the The third identification information is also in one-to-one correspondence with the RLC bearer of SL1.
  • the transceiver module 820 is further configured to send the first message to the relay communication module.
  • the first message may be an RRCReconfigurationSidelink message.
  • the first message includes first identification information, where the first identification information is used to identify the second communication device.
  • the first message further includes configuration information of at least one RLC bearer of SL1.
  • the configuration information of the at least one RLC bearer of the SL1 is used by the first communication apparatus and the relay communication apparatus to establish one or more RLC bearers on the SL1.
  • the first message further includes third identification information.
  • the third identification information is bearer identification information from the first communication device to the second communication device.
  • the first message further includes second identification information.
  • the second identification information includes a PC5 quality of service flow identification (PFI).
  • PFI quality of service flow identification
  • the transceiver module 820 is further configured to send the first data unit to the relay communication module.
  • the communication device 800 is used to implement the function of the first communication device in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the transceiver module 820 reference may be made to the operation of the first communication device in the method embodiment shown in FIG. 3, FIG. 4, FIG. 5, FIG. 6 or FIG. 7.
  • the communication apparatus 900 includes a processing module 910 and a transceiver module 920 .
  • the communication apparatus 900 is configured to implement the function of the relay communication apparatus in the embodiment corresponding to FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the communication device 900 When the communication device 900 is used to implement the function of the relay communication device in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 , exemplarily:
  • the processing module 910 is configured to establish a bearer on SL1 according to the configuration information of at least one RLC bearer of SL1.
  • the processing module 910 is further configured to determine the configuration information of one RLC bearer of SL2 in consideration of the QoS parameters of all bearers on SL1 on SL2 after bearer N:1 mapping.
  • the processing module 910 is further used to determine the configuration information of at least one RLC bearer of SL2 according to the second QoS parameter information.
  • the processing module 910 further determines the configuration information of at least one RLC bearer of SL2 according to the second identification information in each RLC bearer after bearer 1:N mapping.
  • the processing module 910 is further used to determine the configuration information of at least one RLC bearer of SL2 according to the second QoS parameter information on SL2 after bearer 1:1 mapping.
  • the processing module 910 is configured to establish a bearer on SL2 according to the second parameter information.
  • the transceiver module 920 is configured to receive the first message sent by the first communication device.
  • the transceiver module 920 is further configured to send a second message to the second communication device.
  • the second message includes configuration information of at least one RLC bearer of SL2.
  • the second message includes third identification information.
  • the transceiver module 920 is further configured to receive the first data unit sent by the first communication device.
  • the transceiver module 920 is further configured to send the second data unit to the second communication device.
  • the communication device 900 is used to implement the function of the relay communication device in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the transceiver module 920 reference may be made to the operation of the relay communication device in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the communication device 1000 includes a processing module 1010 and a transceiver module 1020 .
  • the communication apparatus 1000 is configured to implement the function of the second communication apparatus in the embodiment corresponding to FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the processing module 1010 is configured to establish a bearer on SL2 according to the configuration information of at least one RLC bearer of SL2.
  • the processing module 1010 is configured to correctly map the received data packet to the corresponding PDCP entity.
  • the transceiver module 1020 is configured to receive the second message sent by the second communication device.
  • the transceiver module 1020 is configured to receive the second data unit sent by the second communication device.
  • the communication device 1000 is used to implement the function of the second communication device in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • the transceiver module 1020 reference may be made to the operation of the second communication apparatus in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 .
  • first message, second message, third message, configuration information of at least one RLC bearer of SL1, configuration information of at least one RLC bearer of SL2, first configuration information, first identifier, third identifier, first QoS parameter , the specific description of the information related to the second QoS parameter, the third QoS parameter and the fourth QoS parameter may refer to the description in Embodiment S400 of the present application.
  • FIG. 11 is still another schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication device 1100 includes a processor 1110 and an interface circuit 1130 .
  • the processor 1110 and the interface circuit 1130 are coupled to each other. It can be understood that the interface circuit 1130 can be a transceiver or an input-output interface.
  • the communication device 1100 may further include a memory 1120 for storing instructions executed by the processor 1120 or input data required by the processor 1110 to execute the instructions or data generated after the processor 1110 executes the instructions.
  • the processor 1110 is used to implement the function of the above-mentioned processing module 810
  • the interface circuit 1130 is used for The functions of the above-mentioned transceiver module 820 are implemented.
  • the processor 1110 is used to implement the function of the above-mentioned processing module 910
  • the interface circuit 1130 is used to The functions of the above-mentioned transceiver module 920 are implemented.
  • the processor 1110 is used to implement the function of the above-mentioned processing module 1010
  • the interface circuit 1130 is used to The functions of the above-mentioned transceiver module 1020 are implemented.
  • the communication apparatus 1100 further includes a bus 1140 , through which the processor 1110 , the interface circuit 1130 and the memory 1120 can communicate.
  • An embodiment of the present application further provides a system chip, where the system chip includes an input and output interface, at least one processor, at least one memory, and a bus, where the at least one memory is used to store instructions, and the at least one processor is used to call the at least one instructions of the memory to perform operations of the methods of the various aspects described above.
  • a processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
  • RAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic disks), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and other media that can store program codes.

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Abstract

本申请提供了一种通信方法及装置，为用户到用户(U2U)的中继数据传输提供了一种通信方法，在该方法中提供了第一侧行链路和第二侧行链路的承载配置方案，满足了数据中继传输的端到端的服务质量要求，从而提升了用户的传输距离。

Description

一种通信方法及装置 技术领域
本申请涉及通信领域，并且更具体地，涉及一种中继场景中的通信方法及装置。
背景技术
车联网(Vehicle to Everything，V2X)是物联网体系中最具有产业潜力、需求最明确的领域之一，具有应用空间广、产业潜力大、社会效益强等特点。车联网通过车载传感器、车载终端等设备收集车辆信息，并通过V2X通信技术实现车与车、车与人、车与路边基础设施以及车与网络之间的通信。车联网将成为未来实现智能交通系统的基础组成部分。
V2X系统中，用户设备(User Equipment，UE)之间通过侧行链路(Sidelink，SL)进行通信，当UE与UE之间直接通过侧行链路进行通信时，由于发送侧UE的硬件能力不足等原因，通信距离会受限。为解决这个问题，引入用户设备到用户设备(UE to UE，U2U)中继技术。U2U中继系统由近端设备，中继设备和远端设备组成。近端设备与中继设备之间的第一侧行链路(SL1)以及中继设备与远端设备之间的第二侧行链路(SL2)均通过侧行链路接口(也称为PC5口)进行通信。但当近端设备，中继设备分别采用传统方法由各自的基站或者各自的默认配置信息进行侧行链路无线承载(Sidelink Radio Bearer，SLRB)配置时，会存在U2U的数据传输无法满足端到端传输的服务质量(Quality of Service，QoS)参数要求的问题。
发明内容
本申请实施例公开了一种通信方法及装置，使得在U2U中继通信系统中，能够基于服务质量要求信息对中继传输链路中的多个侧行链路的SLRB进行配置，从而实现U2U的数据传输满足端到端传输的QoS参数要求。
本申请实施例第一方面公开了一种通信方法，包括：中继通信装置接收来自于第一通信装置的第一消息，该第一消息包含：第一参数信息和该中继通信装置与该第一通信装置之间的第一侧行链路的至少一个无线链路控制(RLC)承载的配置信息，该第一侧行链路的至少一个RLC承载的配置信息是根据所述第一侧行链路的第一服务质量(QoS)参数信息确定的；该中继通信装置向第二通信装置发送第二消息，该第二消息包含该中继通信装置与该第二通信装置之间的第二侧行链路的一个RLC承载的配置信息，该第二侧行链路的该一个RLC承载的配置信息是根据所述第一参数信息确定的。
通过该方法，能够基于服务质量要求信息对上述的第一侧行链路和第二侧行链路的SLRB进行配置，从而使得U2U中继通信系统的第一通信装置通过中继通信装置与第二通信装置的数据传输能够满足该第一通信装置到该第二通信装置的端到端QoS参数要求。
结合第一方面，在第一方面的某些实施方式中，上述第一消息还包含第一标识信息，该第一标识信息用于标识第二通信装置。例如，当第一通信装置通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信，该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，从而使得该中继通信装置可以根据该第一标识信息获知当前的承载配置信息是用于该第一通信装置和该第二通信装置进行通信。
结合第一方面，在第一方面的某些实施方式中，该第一参数信息包括：第二QoS参数信息，该第二QoS参数信息包括：该第一侧行链路的该至少一个RLC承载的QoS流(flow)在第二侧行链路上传输时，该至少一个RLC承载的QoS flow应满足QoS参数要求；或者，该第一参数信息包括：第二标识信息，该第二标识信息包括：该第一侧行链路的该至少一个RLC承载所对应的PC5服务质量流标识(PFI)信息，该PFI信息用于该中继通信装置确定第二QoS参数信息，该第二QoS参数信息包括：该第一侧行链路的该至少一个RLC承载的QoS流(flow)在第二侧行链路上传输时，该至少一个RLC承载的QoS flow应满足QoS参数要求。这样可以使得该中继通信装置能够根据第二侧行链路的RLC承载分别对应的QoS参数信息确定第二侧行链路应满足的QoS参数要求，从而为将第一侧行链路N个承载映射为第二侧行链路一个承载做好准备。
结合第一方面，在第一方面的某些实施方式中，该中继通信装置根据该第二QoS参数信息确定第三QoS参数信息，该第三QoS参数信息用于该中继通信装置确定该第二侧行链路的该一个RLC承载的配置信息。
结合第一方面，在第一方面的某些实施方式中，该第一QoS参数信息和该第三QoS参数信息满足第四QoS参数信息的要求，该第四QoS参数信息为该第一通信装置向该第二通信装置传输数据时，需满足的端到端的QoS参数信息。
结合第一方面，在第一方面的某些实施方式中，该中继通信装置根据该第二QoS参数信息确定该第三QoS参数信息，包括如下任一种方式：在该第二QoS参数信息中，选择优先级最高的QoS流(flow)对应的QoS参数信息作为该第三QoS参数信息；或者，在该第二QoS参数信息中，选择包延迟预算最低的QoS flow对应的QoS参数信息作为该第三QoS参数信息；或者，在该第二QoS参数信息中，选择保证流比特率要求最高的QoS flow对应QoS参数信息作为该第三QoS参数信息；或者，在该第二QoS参数信息中，选择分组错误率要求最低的QoS flow对应的QoS参数信息作为该第三QoS参数信息；或者，在该第二QoS参数信息中，选择各项要求都最高的QoS参数信息作为该第三QoS参数信息；或者，在该第二QoS参数信息中，选择QoS参数的平均值作为该第三QoS参数信息。这样可以使得该中继通信装置将第一侧行链路N个承载映射为第二侧行链路的一个承载后，第一侧行链路的QoS参数和第二侧行链路的QoS参数能够满足第一通信装置到第二通信装置进行数据传输的端到端的服务质量要求。
结合第一方面，在第一方面的某些实施方式中，该中继通信装置根据该第三QoS参数信息确定该第二侧行链路的该一个RLC承载的配置信息；该中继通信装置根据该第三QoS参数信息确定该第二侧行链路的该一个RLC承载的配置信息，包括如下任一种操作：该中继通信装置处于连接态时，该中继通信装置向网络设备发送该第三QoS参数信息，该中继通信装置接收由该网络设备根据该第三QoS参数信息确定的该第二侧行链路的该一个RLC承载的配置信息；或者，该中继通信装置处于空闲态或者非激活态时，该中继通信装置根据网络设备广播的系统消息中的承载配置信息确定该第二侧行链路的该一个RLC承载的配置信息；或者，该中继通信装置处于小区覆盖范围外时，该中继通信装置根据预配置的承载配置信息确定该第二侧行链路的一个RLC承载的配置信息。这样可以使得该中继通信装置在连接态，或者空闲态，或者非激活态，或者处于小区覆盖范围外，都可以根据相应QoS参数信息确定相应的承载配置信息。
结合第一方面，在第一方面的某些实施方式中，该中继通信装置接收来自该第一通信装置的第一数据单元，该第一数据单元中携带第三标识信息，该第三标识信息用于标识该第一 通信装置和该第二通信装置之间的承载，从而该中继通信装置可以基于该第三标识信息，向该第二通信装置发送该第一数据单元。
结合第一方面，在第一方面的某些实施方式中，该第一消息还包含第三标识信息，该第第三标识信息用于标识该第一通信装置和该第二通信装置之间的承载，该第三标识信息与该第一侧行链路的该至少一个RLC承载具有对应关系。通过在该第一消息中携带该第三标识信息，可以使得在第一侧行链路上传输数据时该数据不用携带该第三标识信息，从而节省了数据开销，提高了传输效率。
结合第一方面，在第一方面的某些实施方式中，该中继通信装置接收来自于该第一通信装置的第一数据单元；该中继通信装置向该第二通信装置发送添加了该第三标识信息的该第一数据单元。
本申请实施例第二方面公开了一种通信方法，包括：第一通信装置产生第一消息；该第一通信装置向中继通信装置发送该第一消息，该第一消息包含：第一参数信息和第一侧行链路的至少一个RLC承载的配置信息，其中，该第一侧行链路为该第一通信装置和该中继通信装置之间的通信链路，该第一参数信息用于确定该中继通信装置与第二通信装置之间的第二侧行链路的一个RLC承载的配置信息，该第一侧行链路的该至少一个RLC承载的配置信息是根据该第一侧行链路的第一QoS参数信息确定的。
通过该方法，能够基于服务质量要求信息对上述的第一侧行链路和第二侧行链路的SLRB进行配置，从而使得U2U中继通信系统的第一通信装置通过中继通信系统与第二通信装置的数据传输能够满足该第一通信装置到该第二通信装置的端到端QoS参数要求。
结合第二方面，在第二方面的某些实施方式中，该第一通信装置通过中继通信装置向该第二通信装置发送第三消息，该第三消息包含第一配置信息；该第一配置信息包括用于在该第一通信装置和该第二通信装置之间进行传输所需的分组数据汇聚层协议(PDCP)和服务数据适配协议(SDAP)的配置信息。
结合第二方面，在第二方面的某些实施方式中，该第三消息还包含第三标识信息；该第三标识信息用于标识该第一通信装置和该第二通信装置之间的承载，该第三标识信息与该第一配置信息具有对应关系。
结合第二方面，在第二方面的某些实施方式中，该第一消息还包含第一标识信息，该第一标识信息用于标识第二通信装置。例如，当第一通信装置要通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信，该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，从而使得该中继通信装置可以根据该第一标识信息获知当前承载配置信息是用于该第一通信装置和该第二通信装置进行通信。
结合第二方面，在第二方面的某些实施方式中，该第一参数信息包括：第二QoS参数信息，该第二QoS参数信息包括：该第一侧行链路的该至少一个RLC承载的QoS flow在第二侧行链路上传输时，该至少一个RLC承载的QoS flow应满足的QoS参数要求；或者，该第一参数信息包括：第二标识信息，该第二标识信息包括：该第一侧行链路的该至少一个RLC承载所对应的PC5服务质量流标识(PFI)信息，该PFI信息用于该中继通信装置确定第二QoS参数信息，该第二QoS参数信息包括：该第一侧行链路的该至少一个RLC承载的QoS flow在第二侧行链路上传输时，该至少一个RLC承载的QoS flow应满足的QoS参数要求。这样可以使得该中继通信装置可以根据第二侧行链路的RLC承载分别对应的QoS参数信息确定第二侧行链路应满足的QoS参数要求，可以为将第一侧行链路N个承载映射为第二侧行链路一个承载做好准备。
结合第二方面，在第二方面的某些实施方式中，该第一侧行链路的该至少一个RLC承载的配置信息是根据该第一侧行链路的该第一QoS参数信息确定的，比如：该第一通信装置处于连接态时，该第一通信装置向网络设备发送该第一QoS参数信息，该第一通信装置接收由该网络设备根据该第一QoS参数信息确定的该第一侧行链路的该至少一个RLC承载的配置信息；或者，该第一通信装置处于空闲态或者非激活态时，该第一通信装置网络设备广播的系统消息中的承载配置信息确定该第一侧行链路的该至少一个RLC承载的配置信息；或者，该第一通信装置处于小区覆盖范围外时，该第一通信装置根据预配置的承载配置信息确定该第一侧行链路的至少一个RLC承载的配置信息。这样可以使得该中继通信装置将第一侧行链路N个承载映射为第二侧行链路的一个承载后，第一侧行链路的第一QoS参数信息和第二侧行链路的第三QoS参数信息满足第一通信装置到第二通信装置的第四QoS参数信息要求。
结合第二方面，在第二方面的某些实施方式中，该第一通信装置向该中继通信装置发送第一数据单元，该第一数据单元中携带第三标识信息，该第三标识信息用于标识该第一通信装置和该第二通信装置之间的承载。
结合第二方面，在第二方面的某些实施方式中，该第一消息还包含第三标识信息，该第三标识信息用于标识该第一通信装置和该第二通信装置之间的承载，该第三标识信息与该第一侧行链路的该至少一个RLC承载具有对应关系。由于在该第一消息中携带该第三标识信息，中继通信装置可以将在第二侧行链路传输的数据携带上该第三标识信息，所以可以使得在第一侧行链路上传输数据时该数据不用携带该第三标识信息，从而节省了数据开销，提高了传输效率。
本申请实施例第三方面公开了一种通信方法，包括：第二通信装置接收来自于中继通信装置的第二消息，该第二消息包含该第一通信装置中继通信装置与该中继通信装置之间的第二侧行链路的一个无线链路控制(RLC)承载的配置信息，该第二通信装置根据该第二侧行链路的该一个RLC承载的配置信息与该中继通信装置进行通信。
结合第三方面，在第三方面的某些实施方式中，该第二通信装置接收来自于第一通信装置的第三消息，该第三消息包含第一配置信息；该第一配置信息包括用于在该第一通信装置和该第二通信装置之间进行传输所需的分组数据汇聚层协议(PDCP)和服务数据适配协议(SDAP)的配置信息。
结合第三方面，在第三方面的某些实施方式中，该第三消息还包含第三标识信息；该第三标识信息用于标识该第一通信装置和该第二通信装置之间的承载，该第三标识信息与该第一配置信息具有对应关系。
结合第三方面，在第三方面的某些实施方式中，该第二通信装置接收来自于该中继通信装置的第一数据单元，该第一数据单元携带第三标识信息，该第三标识信息与该第一配置信息具有对应关系。
本申请实施例第四方面提供了一种通信装置，该通信装置应用于中继通信装置，包括用于执行第一方面或第一方面任一种可能的实施方式中所描述的方法的模块。
本申请实施例第五方面提供了一种通信装置，该通信装置应用于第一通信装置，包括用于执行第二方面或第二方面任一种可能的实施方式中所描述的方法的模块。
本申请实施例第六方面提供了一种通信装置，该通信装置应用于第二通信装置，包括用于执行第三方面或第三方面任一种可能的实施方式中所描述的方法的模块。
本申请实施例第七方面提供了一种通信装置，该通信装置应用于中继通信装置，包括处理器和接口电路，该接口电路用于接收来自该装置之外的其它装置的信号并传输至该处理器 或将来自该处理器的信号发送给该装置之外的其它装置，该处理器通过逻辑电路或执行代码指令用于实现第一方面或第一方面的可能的实现方式中所描述的方法。
本申请实施例第八方面提供了一种通信装置，该通信装置应用于第一通信装置，包括处理器和接口电路，该接口电路用于接收来自该装置之外的其它装置的信号并传输至该处理器或将来自该处理器的信号发送给该装置之外的其它装置，该处理器通过逻辑电路或执行代码指令用于实现第二方面或第二方面的可能的实现方式中所描述的方法。
本申请实施例第九方面提供了一种通信装置，该通信装置应用于第二通信装置，包括处理器和接口电路，该接口电路用于接收来自该装置之外的其它装置的信号并传输至该处理器或将来自该处理器的信号发送给该装置之外的其它装置，该处理器通过逻辑电路或执行代码指令用于实现第三方面或第三方面的可能的实现方式中所描述的方法。
本申请实施例第十方面提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当该计算机程序或指令被计算设备执行时，实现第一方面或第一方面的可能的实现方式中所描述的方法，或实现第二方面或第二方面的可能的实现方式中所描述的方法，或实现第三方面或第三方面的可能的实现方式中所描述的方法。
本申请实施例第十一方面提供了一种计算机程序产品，该计算机程序产品包含计算机程序或指令，当该计算机程序或指令被计算设备执行时，实现第一方面或第一方面的可能的实现方式中所描述的方法，或实现第二方面或第二方面的可能的实现方式中所描述的方法，或实现第三方面或第三方面的可能的实现方式中所描述的方法。
本申请实施例第十二方面提供了一种通信系统，该通信系统包括如下中一个或多个：如第四方面至第九方面中任一该的通信装置，如第十方面提供的一种计算机可读存储介质，以及如第十一方面提供的一种计算机程序产品。
附图说明
图1为本申请实施例提供的一种通信系统架构示意图；
图2为本申请实施例提供的一种可能的用户面协议栈的示意图；
图3为本申请实施例提供的一种通信方法的示意性流程图；
图4为本申请实施例提供的一种通信方法的再一示意性流程图；
图5为本申请实施例提供的一种通信方法的再一示意性流程图；
图6为本申请实施例提供的一种通信方法的再一示意性流程图；
图7为本申请实施例提供的一种通信方法的再一示意性流程图；
图8为本申请实施例提供的一种通信装置的示意性框图；
图9为本申请实施例提供的一种通信装置的再一示意性框图；
图10为本申请实施例提供的一种通信装置的再一示意性框图；
图11为本申请实施例提供的一种通信装置的再一示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
示例性的，为便于理解本申请实施例，下面对本申请实施例涉及的概念进行说明。
1、侧行链路(sidelink，SL)：以侧行链路涉及的通信装置是UE为例，UE和UE之间的无线通信链路称为侧行链路，侧行链路通信的一个典型应用场景是车联网。在车联网中，每一个车可以视为一个UE，UE与UE之间可以通过侧行链路直接进行数据传输，而不要经过无线 网络设备，这样可以有效地减少通信时延。在侧行链路上支持广播、单播、组播。
2、广播：广播通信类似于无线网络设备广播系统消息，即UE不做加密对外发送广播业务数据，任何在有效接收范围内的其他UE，如果对该广播业务感兴趣的都可以接收该广播业务的数据。
3、单播：单播通信类似于UE与无线网络设备之间建立无线资源控制(radio resource control，RRC)连接之后进行的数据通信，需要两个UE之间在先建立单播连接。在建立单播连接之后，两个UE可以基于协商的标识进行数据通信，该数据可以是加密的，也可以是不加密的。相比于广播，在单播通信中，只能是建立了单播连接的两个UE之间才能进行该单播通信。
4、组播：组播通信是指一个通信组内所有UE之间的通信，组内任一UE都可以收发该组播业务的数据。
5、5G服务质量流(5G Quality of Service QoS flow，5G QoS flow)：简称QoS flow，是5G系统中端到端传输QoS控制的最小粒度。所有映射到同一个5G QoS flow的数据可以进行相同的转发处理，例如调度策略、队列管理策略、速率整形策略、无线链路层控制协议(Radio Link Control RLC)配置等。若待传输数据需要进行不同的QoS控制或处理，则需要将其划分为不同的QoS flow。
6、RLC承载：在New Radio(NR)标准协议中，基站可以通过RRC消息中的信元(比如：RLC-BearerConfig)对无线承载关联的一个RLC实体和逻辑信道进行配置，通常将无线承载关联的一个RLC实体和逻辑信道称之为RLC承载；其中RLC承载配置参数可以包括RLC实体配置、逻辑信道标识(Logical Channel Identifier，LCID)、逻辑信道配置以及关联的承载标识。类似的，对于NR sidelink，基站可以通过RRC消息中的信元(比如：SL-RLC-BearerConfig)对SLRB关联的RLC实体和逻辑信道进行配置。通常将SL无线承载关联的一个RLC实体和逻辑信道称之为SL RLC承载。
应理解，在本申请实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
应理解，在本申请的实施例中，对术语进行的编号一般是为了区分方便而进行的描述，编号并不意味着该术语存在顺序或者优先级的区别，比如“第一标识信息”和“第三二标识信息”，其中的“第一”和“第二”，通常只用于区分这两组信息，而不应对本申请实施例的实施过程构成限定。
应理解，在本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
应理解，在本申请实施例中，术语“系统”和“网络”在本文中常被可互换使用。
应理解，在本申请实施例中，术语“和/或”，通常用于描述关联对象之间的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。应理解，在本申请实施例中出现的字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请实施例提供的方法及装置可以应用于如图1所示的通信系统。图1示出了一种U2U中继通信系统100的架构示意图。该通信系统100中包括第一通信装置110、中继通信装置120以及第二通信装置130。可选地，该通信系统还包括无线网络设备140。 示例性地，第一通信装置110与中继通信装置120之间具有侧行链路1，中继通信装置120与第二通信装置130之间具有侧行链路2,第一通信装置110通过中继通信装置120与第二通信装置130进行信令和/或数据交互。第一通信装置110与无线网络设备140可以具有通信连接，第二通信装置120与无线网络设备140也可以具有通信连接。可选地，第一通信装置110与中继通信装置120可以分别与不同的无线网络设备具有通信连接。
示例性地，上述中继通信装置、第一通信装置以及第二通信装置是一种具有无线收发功能的设备，比如可以是车载通信装置、车载通信芯片、路侧单元或路侧单元中的通信装置等，也可以指UE、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。中继通信装置、第一通信装置以及第二通信装置还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
示例性地，本申请实施例中的无线网络设备可以是任意一种具有通信收发功能的设备。比如，该无线网络设备可以是为通信装置提供无线通信功能服务的设备，通常位于网络侧，包括但不限于：第五代(5th generation，5G)通信系统中的下一代基站(gNodeB，gNB)、LTE系统中的演进型节点B(evolved node B，eNB)、V2X通信系统中的为终端设备提供无线通信服务的设备、云无线接入网络(cloud radio access network，CRAN)场景中的无线控制器、中继站、车载设备、可穿戴设备以及未来演进网络中的网络设备等，具体实现形式本申请实施例并不限定。
或者，在本申请实施例中，无线网络设备可以是RAN中的设备，或者说，是将通信装置接入到无线网络的RAN节点。例如，作为示例而非限定，作为基站，可以列举：gNB、传输接收点(transmission reception point，TRP)、发射点(transmitting point，TP)、演进型节点B(evolved Node B，eNB)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)等。在一种网络结构中，无线网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点，或包括CU节点和DU节点的RAN设备，或者控制面CU节点和用户面CU节点以及DU节点。
无线网络设备为小区提供服务，通信装置通过该小区使用的传输资源(例如，频域资源，或者，时频资源)与基站进行通信，该小区可以是基站对应的小区，小区可以属于宏基站，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
本申请实施例提供的方法及装置可用于各种通信系统，例如第四代(4th generation，4G)通信系统，4.5G通信系统，5G通信系统，多种通信系统融合的系统，或者未来演进的通信系统(比如5.5G通信系统或6G通信系统)。例如长期演进(long term evolution，LTE)系统，新空口(new radio,NR)系统，无线保真(wireless-fidelity，WiFi)系统，以及第三代合作伙伴计划(3rd generation partnership project，3GPP)相关的通信系统等。
在上述的U2U中继通信系统中，通信系统包含侧行链路1和侧行链路2两段侧行链路。示例性的，在侧行链路1中，第一通信装置110为发送装置，中继通信装置120为 接收装置。在侧行链路2中，中继通信装置120为发送装置，第二通信装置130为接收装置。若用现有的SLRB配置方法，第一通信装置110和中继通信装置120使用基站分别提供的配置信息或使用各自的默认配置信息进行SLRB配置，该配置方法可能会使U2U中继通信系统传输数据和/或信令时不满足该第一通信装置110到该第二通信装置130之间端到端传输的QoS参数要求。示例性地，第一通信装置110按照自己的QoS参数要求配置第一侧行链路(SL1)的承载配置，该QoS参数要求是指在该第一通信装置110与该第二通信装置130进行数据传输时，需满足该第一通信装置110到该第二通信装置130之间端到端传输的QoS参数要求。中继通信装置120按照自己的QoS参数要求进行第二侧行链路(SL2)的承载配置，该QoS参数要求是指在该中继通信装置120与该第二通信装置130传输数据时，需满足的该中继通信装置120到该第二通信装置130之间端到端传输的QoS参数要求。此时，上述SLRB配置方法，可能无法满足该第一通信装置110与该第二通信装置130之间进行端到端传输数据时的QoS要求。例如，第一通信装置110与该第二通信装置130的QoS参数的时延要求为10ms，如果该第一通信装置110将SL1上的SLRB配置为10ms的延时要求，此时无论SL2的SLRB如何配置，均无法使得第一通信装置110与该第二通信装置130的端到端时延得到保障。
基于图1，图2是本申请实施例提供的一种在U2U中继通信系统中的用户面协议栈示意图。如图2所示，第一通信装置210的用户面协议栈包括与第二通信装置230之间进行端到端对等通信的应用(Application，APP)层、侧行链路服务数据适配协议(SideLink-Service Data Adaptation Protocol，SL-SDAP)层、侧行链路分组数据汇聚协议(SideLink-Packet Data Convergence Protocol，SL-PDCP)层。第一通信装置210的用户面协议栈还包括与中继通信装置220之间进行对等通信的基于侧行链路连接的SL-RLC层、侧行链路媒体接入控制(SideLink-Packet Media Access Control，SL-MAC)层、侧行链路物理层(SideLink-Physical Layer，SL-PHY)，可选地，第一通信装置210的用户面协议栈还包括与中继通信装置220，第二通信装置230之间进行对等通信的适配层(Adapt)。中继通信装置220的用户面协议栈包括与第一通信装置210之间进行对等通信的基于PC5口连接的SL-RLC层，SL-MAC层，SL-PHY层，以及与第二通信装置230之间进行对等通信的基于PC5口连接的SL-RLC层，SL-MAC层，SL-PHY层。可选地，中继通信装置220的用户面协议栈还包括与第一通信装置210，第二通信装置230之间进行对等通信的适配层。第二通信装置230的用户面协议栈包括与第一通信装置210之间进行对等通信的(端到端)的APP层，SL-SDAP层，SL-PDCP层，以及与中继通信装置220之间进行对等通信的基于PC5口连接的SL-RLC层，SL-MAC层，SL-PHY层。可选地，第二通信装置230的用户面协议栈还包括适配层。示例性的，在U2U中继通信系统中，中继通信装置220可能仅建立RLC承载，但不建立对应的SDAP和PDCP实体，而QoS flow和SLRB之间的承载映射是在SDAP层完成，也就是说，该中继通信装置无法识别和处理QoS flow的从SL1的承载到SL2的承载的重新映射。因此中继通信装置220从第一通信装置210接收到数据包之后，可能无法把SL1上的QoS flow和RLC承载之间的映射关系转换成相应的在SL2上的映射关系，可能导致中继通信装置220无法以正确的RLC承载配置将数据传输给通信装置230。这可能导致QoS flow数据无法正确的映射到E2E PDCP实体和SDAP实体，同样可能会导致E2E QoS参数要求无法得到保障。因此，U2U中继通信系统应该如何进行SLRB配置，成为亟需解决的问题。针对上述问题，本申请实施例提出了以下解决方案。
基于图1和图2请参见图3，图3示出了根据本申请实施例的通信方法300示意性流程 图，在图3所示出的通信方法中，涉及第一通信装置，中继通信装置以及第二通信装置。该第一通信装置，该中继通信装置和该第二通信装置可以为本申请图1和图2中的第一通信装置，中继通信装置以及第二通信装置。该方法300包括但不限于如下步骤：
S301，第一通信装置向中继通信装置发送第一消息，该第一消息包含SL1的RLC承载的配置信息。
示例性地，第一通信装置和中继通信装置根据该SL1的RLC承载配置信息建立该SL1上的至少一个RLC承载。该SL1的RLC承载配置信息由该第一通信装置根据SL1的QoS参数信息(如，第一QoS参数信息)确定。当第一通信装置向第二通信装置发送数据时，需满足第一通信装置到第二通信装置的端到端服务质量要求(如，第四QoS参数信息)。当第一通信装置通过中继通信装置向第二通信装置发送数据时，第一通信装置可以根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)确定SL1需满足的服务质量要求(如，第一QoS参数信息)和SL2需满足的服务质量要求(如，第二QoS参数信息)。可选地，当第一通信装置通过中继通信装置向第二通信装置发送数据时，中继通信装置需根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)确定SL1需满足的服务质量要求(如，第一QoS参数信息)和SL2需满足的服务质量要求(如，第二QoS参数信息)。然后中继通信装置将确定的第一QoS参数信息和/或第二QoS参数信息发送给第一通信装置。
可选地，该第一消息还包含第一标识信息，该第一标识信息用于标识该第二通信装置，比如该第一标识信息是第二通信装置的设备识别号。
示例性地，由于与中继通信装置进行单播或组播通信的通信装置可能不止一个，当第一通信装置要通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信，通过该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，从而使得该中继通信装置可以根据该第一标识信息获知当前RLC承载配置信息是用于该第一通信装置和第二通信装置进行通信。
可选地，该第一消息还包含第一参数信息，该第一参数信息用于确定SL2的RLC承载的配置信息。该第一参数信息包括第二QoS参数信息和/或第二标识信息。该第二标识信息包括SL1的RLC承载所对应的PFI信息。
示例性地，中继通信装置收到第一通信装置发送的第二QoS参数信息，并根据该第二QoS参数信息确定SL2上的RLC承载的配置信息。或者，该中继通信装置收到第一通信装置发送的第二标识信息，并根据该第二标识信息中的FPI信息确定相应的SL2的第二QoS参数信息。
示例性的，中继通信装置根据第二QoS参数信息确定SL2的RLC承载的配置信息的方法可以为以下任一种：
承载N：1映射，例如，中继通信装置将SL1的N个RLC承载映射为SL2的1个RLC承载，映射完后在SL1上有N个RLC承载，而在SL2上有1个RLC承载；
或者，承载1：N映射，例如，中继通信装置将SL1的1个RLC承载映射为SL2的N个RLC承载，映射完后在SL1上有N个RLC承载，而在SL2上有1个RLC承载；
或者，承载1：1映射，例如，中继通信装置将SL1的1个RLC承载映射为SL2的1个RLC承载，映射完后在SL1上有1个RLC承载，而在SL2上有1个RLC承载；
或者，承载N：M映射，例如，中继通信装置将SL1的N个RLC承载映射为SL2的M个RLC承载，映射完后在SL1上有N个RLC承载，而在SL2上有M个RLC承载。
可选地，该第一消息还包含第三标识信息，该第三标识信息用于标识第一通信装置和第二通信装置之间的承载，该第三标识信息与SL1的RLC承载具有对应关系，比如该第三标识是该第一通信装置与该第二通信装置之间承载的承载标识。
示例性地，中继通信装置可以将接收到的来自第一通信装置的数据携带该第三标识信息，然后将该携带该第三标识信息的该数据发送给第二通信装置。第二通信装置收到该第三标识信息后，可以根据该第三标识信息与RLC承载的对应关系，将数据映射到对应的PDCP。
可选地，上述的第一标识信息、第一参数信息、第三标识信息还可以通过其他消息由该第一通信装置发送至该第二通信装置。
S302，中继通信装置向第二通信装置发送第二消息，该第二消息包含SL2的RLC承载的配置信息。
示例性地，中继通信装置需将确定SL2的RLC承载的配置信息发送至第二通信装置，从而中继通信装置和第二通信装置可以根据该SL2的RLC承载配置信息建立该SL2的至少一个RLC承载。
可选地，第二消息还包括第三标识信息。该第三标识信息用于标识第一通信装置和第二通信装置之间的承载，比如该第三标识是该第一通信装置与该第二通信装置之间承载的承载标号。
示例性地，第二通信装置收到该第三标识信息后，可以根据该第三标识信息与RLC承载的对应关系，将数据映射到对应的PDCP。
可选地，上述第三标识信息还可以通过其他消息由该中继通信装置发送至该第二通信装置。
可选地，S303，第一通信装置通过中继通信装置向第二通信装置发送第三消息。
示例性地，第一通信装置通过在SL1上传输的RRC消息携带第三消息，并发送给中继通信装置。该中继通信装置接收到该第三消息后，再将SL2上传输的RRC消息携带该第三消息，并发送给第二通信装置。
可选地，该第三消息包含第一配置信息，该第一配置信息包括第一通信装置和第二通信装置之间的PDCP配置信息和SDAP配置信息。
示例性地，当第一通信装置向第二通信装置发送数据时，需满足该第一通信装置到该第二通信装置的端到端服务质量要求(如，第四QoS参数)要求。第一通信装置根据该第四QoS参数信息确定第一通信装置和第二通信装置之间的PDCP配置信息和SDAP配置信息，并将该PDCP配置信息和SDAP配置信息通过中继通信装置发送给第二通信装置，从而该第一通信装置和该第二通信装置可以根据该PDCP配置信息和该SDAP配置信息建立PDCP和SDAP承载。
可选地，该第三消息还包含第三标识信息，该第三标识信息用于标识第一通信装置和第二通信装置之间的承载，该第三标识信息与上述第一配置信息具有对应关系，比如该第三标识信息是该第一通信装置和该第二通信装置通信需建立PDCP和SDAP承载的承载标号。示例性地，第二通信装置通过该第三标识信息标识的该第一通信装置到该第二通信装置传输需建立的承载与该第一配置信息的对应关系将数据映射到相应的PDCP。
可选地，上述第三标识信息还可以通过其他消息由该第一通信装置通过该中继通信装置发送至该第二通信装置。
参考图1、图2和图3所对应的本申请实施例，请参见图4，图4示出了根据本申请实施例的通信方法400示意性流程图，在图4所示出的通信方法中，涉及第一通信装置，中继通 信装置以及第二通信装置。该第一通信装置，该中继通信装置和该第二通信装置可以为本申请图1、图2和图3中的第一通信装置，中继通信装置以及第二通信装置。该方法400包括但不限于如下步骤：
S401，第一通信装置根据第四QoS参数信息执行PDCP和SDAP配置，该第一通信装置根据第一QoS参数信息确定SL1上的RLC承载的配置信息。
其中，第四QoS参数信息可以为第一通信装置通过中继通信装置向第二通信装置传输数据时，需满足该第一通信装置到该第二通信装置之间端到端传输的QoS参数信息。当第一通信装置通过中继通信装置向第二通信装置发送数据时，第一通信装置可以根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输时需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。可选地，当第一通信装置通过中继通信装置向第二通信装置发送数据时，也可以通过中继通信装置根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输是需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。然后中继通信装置可以将确定的第一QoS参数信息和/或第二QoS参数信息发送给该第一通信装置。该第一QoS参数信息或该第二QoS参数信息分别可以包括PC5 5G服务质量标识(PC5 5G QoS Identifier，PQI)、分配保持优先级(Allocation and Retention Priority，ARP)、保证比特速率(Guarantee Bit Rate，GFBR)等与性能要求相关的参数中的一种或多种，其中，示例性的：PQI为一个QoS流的ID，一个PQI用于标识一条QoS流；ARP包含QoS流的优先级和/或抢占能力，优先级决定了UE资源请求的重要性，在系统资源受限时，ARP决定了一个QoS流是被接受还是被拒绝；GFBR表示由网络保证在平均时间窗口上向QoS流提供的比特率。
第一QoS参数信息和第二QoS参数信息的确定，可以在第一通信装置上进行，也可以在与第一通信装置连接的第一无线网络设备上进行，还可以在中继通信装置进行。示例性的，若第一QoS参数信息和第二QoS参数信息的确定在第一通信装置的第一无线网络设备进行，则由第一通信装置将第四QoS参数信息携带在RRC消息中发送给第一无线网络设备，该第一无线网络设备可以根据该第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输时需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息，然后通过RRC消息将获得的第二QoS参数信息发送给第一通信装置，第一通信装置再将得到的该第二QoS参数信息发送给中继通信装置；可选地，若第一QoS参数信息和第二QoS参数信息的确定在第一通信装置进行，第一通信装置可以根据该第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输时需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息，进而将得到的该第二QoS参数信息发送给中继通信装置。可选地，若第一QoS参数信息和第二QoS参数信息的确定在中继通信装置进行，则第一通信装置将第四QoS参数信息通过RRC消息或者PC5-S消息发送给中继通信装置，中继通信装置确定第一QoS参数信息和第二QoS参数信息后，将确定的第一QoS参数信息，或者，第一QoS参数信息和第二QoS参数信息发送给第一通信装置。
可选地，该SL1的至少一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1的至少一个RLC承载。
应理解，为了保证通信发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收，示例性的，SLRB承载配置可以包括如下中的部分或者全部：
·SDAP配置：是否有SDAP头、是否为默认SLRB、QoS flow到SLRB的映射关系、通信模式(单播、组播或广播)；
·PDCP配置：丢包定时器时长、PDCP序列号长度、是否乱序传输等；
·RLC配置：RLC传输模式、RLC序列号长度、RLC AM模式下最大允许ARQ重传次数等；
·LCH配置：逻辑信道优先级划分(LCP，Logical Channel Prioritization)的相关参数，如逻辑信道优先级，有限比特速率(Prioritized Bit Rate,PBR)，桶大小持续时长(Bucket Size Duration,BSD)等，是否允许使用configured grant type 1的指示，是否使能HARQ反馈，该LCH关联的SR资源，以及所属的LCG等。
当第一通信装置处于不同的连接状态时，该SL1的至少一个RLC承载的配置信息的获取方法不同。
在一种可能的实施方式中，第一通信装置处于连接态，第一通信装置可以基于侧行链路用户设备标识(SidelinkUEInformation，SUI)消息向无线网络设备发送第一QoS参数信息。第一QoS参数信息中包含每个QoS flow的标识信息PFI以及相应的QoS参数。网络设备根据第一通信装置上报的第一QoS参数信息，为第一通信装置进行SLRB配置，并通过RRC消息将SLRB相关配置信息发至第一通信装置，从而确定该SL1的至少一个RLC承载的配置信息。
在另一种可能的实施方式中，第一通信装置处于空闲态或非激活态，第一通信装置依据无线网络设备广播的系统消息中的承载配置信息获取SLRB相关配置，从而确定上述SL1的至少一个RLC承载的配置信息。例如第一通信装置可以依据第一QoS参数信息，从无线网络设备广播的系统消息中的承载配置信息中获取对应的SLRB相关配置信息。
在另一种可能的实施方式中，第一通信装置处于无覆盖状态，第一通信装置依据预配置的承载配置信息确定SL1的至少一个RLC承载的配置信息。例如第一通信装置可以依据第一QoS参数信息，从预先存储或者预先获得的承载配置信息中获取对应的SLRB相关配置信息。
S402，第一通信装置通过中继通信装置向第二通信装置发送第三消息。
示例性地，第一通信装置通过在SL1上传输的RRC消息携带第三消息，并发送给中继通信装置。该中继通信装置接收到该第三消息后，再将SL2上传输的RRC消息携带该第三消息，并发送给第二通信装置。
可选地，该第三消息可以是RRCReconfigurationSidelink消息或者其他PC5 RRC消息或者PC5(PC5-Signaling，PC5)消息。
可选地，该第三消息包括第一配置信息，该第一配置信息为第一通信装置到第二通信装置的PDCP和SDAP配置信息，该第二通信装置可以根据接收到的该第一配置信息，将接收到的数据映射到相应的PDCP实体。
可选地，该第三消息还包括第三标识信息，该第三标识信息为第一通信装置到第二通信装置的承载标识信息，其中第三标识信息与第一配置信息存在对应关系。第二通信装置可以根据该第三标识信息识别对应的PDCP实体，第三标识信息可以是协议中定义的信元SLRB-PC5-ConfigIndex或者其他形式。该第二通信装置可以根据接收到的该第三标识信息标识的该第一通信装置到该第二通信装置传输需建立的承载与该第一配置信息的对应关系，将接收到的数据映射到相应的PDCP实体。
S403，第一通信装置向中继通信装置发送第一消息。
可选地，该第一消息可以是RRCReconfigurationSidelink消息或者其他PC5 RRC消息或者PC5-S消息。
可选地，该第一消息包括第一标识信息，该第一标识信息用于标识第二通信装置，比如该第一标识信息是第二通信装置的设备识别号。例如：当第一通信装置要通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信。该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，该第一标识信息标识了当前RLC承载配置信息是用于该第一通信装置和第二通信装置进行通信。
可选地，该第一消息还包括SL1的至少一个RLC承载的配置信息RLC承载的配置信息。该SL1的至少一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1上的至少一个RLC承载。应理解，为了可以通信，发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收，所以第一通信装置需要把该SL1的至少一个RLC承载的配置信息发送给中继通信装置。
可选地，该第一消息还包括第一参数信息，该第一参数信息包括第二QoS参数信息。该第二QoS参数信息包括所述第一侧行链路上的一个或多个RLC承载在所述第二侧行链路上的需满足的QoS参数要求信息；中继通信装置根据接收的该第二QoS参数信息确定SL2上的第三QoS参数信息，并根据第三QoS参数信息确定SL2的一个RLC承载的配置信息。
可选地，该第一参数信息还包括第二标识信息。第二标识信息用于中继通信装置来确定SL 1上的每个RLC承载在SL 2上应满足的QoS参数要求。示例性地，第二标识信息为SL 1上的每个RLC承载对应的PC5服务质量流标识(PFI)。中继通信装置根据第一通信装置发送过来的每个RLC承载对应的PFI确定对应的QoS流，进而根据该QoS流确定SL 1的每个RLC承载在SL 2上应满足的QoS参数要求。
可选地，若第一通信装置的承载和SL 1上的RLC承载进行1:1的映射，那么第一消息还包括第三标识信息。该第三标识信息标识了第一通信装置到第二通信装置之间的承载和SL1上的RLC承载之间的对应关系，中继通信装置可以根据该第三标识信息为每个SL 1的RLC承载传输的数据包携带上第一通信装置到第二通信装置之间的承载标识信息。
S404，中继通信装置建立SL1的承载，并根据第一参数信息确定SL2的一个RLC承载的配置信息。
示例性地，中继通信装置根据第一通信装置发送的SL1的至少一个RLC承载的配置信息进行SL1的RLC承载配置，从而使得第一侧行链路可以进行通信。中继通信装置根据第一通信装置发送过来的每个RLC承载关联第二标识信息(例如每个RLC承载所有QoS flow的QFI信息)，确定该每个QFI对应的QoS流，进而根据该确定的QoS流确定该QoS流在SL2上传输需满足的QoS参数要求。即完成确定每个SL 1上的RLC承载在SL 2上应满足的QoS参数要求的操作。
可选地，中继通信装置收到的第二QoS参数信息直接包括了SL1上的RLC承载在SL2上应满足的QoS参数要求，该中继通信装置不需要再根据接收到的该第二标识信息确定在SL2上进行数据传输需要满足的QoS参数要求。示例性的，中继通信装置根据该第二标识信息或该第二QoS参数信息进一步进行N:1的映射，例如，中继通信装置将SL1的N个RLC承载映射为SL2的一个RLC承载，映射完后在SL1上有N个RLC承载，在SL2上有一个RLC承载。
示例性地，该中继通信装置确定SL2上的第三QoS参数信息。由于SL 1上的一个或者多个承载最后在SL 2上汇聚成了一个承载，因此，SL 2上的这一个RLC承载的QoS参数要 求应考虑汇聚前的所有N个承载。例如SL1上的两个承载SLRB1和SRLB2，其中SLRB1上传输QoS flow1和QoS flow2，SLRB2上传输QoS flow3和QoS flow4，这四个QoS flow对应的第二标识信息分别为PFI1、PFI2、PFI3和PFI4。中继通信装置根据第二标识信息得到了在SL2对应的4个QoS参数要求，由于承载N:1的汇聚，中继通信装置需要考虑该SL2对应的4个QoS参数要求得到一个SL2上的第三QoS参数信息。中继通信装置可以根据如下其中任一种方法来确定SL 2上的QoS参数，即第三QoS参数信息，以尽量保证E2E的QoS参数要求：
·在汇聚前的N个RLC承载中，优先级最高的QoS flow对应的QoS参数；
·在汇聚前的N个RLC承载中，包延迟预算(Packet Delay Budget，PDB)最低的QoS flow对应的QoS参数；
·在汇聚前的N个RLC承载中，保证流比特率(Guaranteed Flow Bit Rate，GFBR)要求最高的QoS flow对应的QoS参数；
·在汇聚前的N个RLC承载中，分组错误率(Packet Error Rate，PER)要求最低的QoS flow对应的QoS参数；
·结合汇聚前的N个RLC承载的多套QoS参数信息，各项要求都按最高的QoS参数。
·在汇聚前的N个RLC承载的多套QoS参数信息的基础上，取平均值。
中继通信装置在确定SL2上的第三QoS参数信息后，可根据该第三QoS参数信息确定SL2的一个RLC承载配置信息，可选地，该SL2的一个RLC承载的配置信息用于第二通信装置与中继通信装置建立SL2上的一个RLC承载。由第三QoS参数信息确定RLC承载配置的具体配置方法，根据中继通信装置的状态决定，详细描述请参见步骤S301，这里不再赘述。
S405，中继通信装置向第二通信装置发送第二消息。
可选地，该第二消息包括SL2的一个RLC承载的配置信息。该第二通信装置根据接收到的SL2的一个RLC承载的配置信息进行SL2的RLC承载配置。
可选地，第一通信设备在每个数据包的Adapatation Header中带上第三标识信息，即第一通信装置与第二通信装置之间的承载的标识信息，然后通过中继通信装置转发给第二通信装置。第二通信装置接收到数据包后，可以依据数据包携带的第三标识信息映射到相应的PDCP实体，最后第二通信装置根据第一配置信息，将数据正确递交给SDAP实体，从而完成第一通信装置到第二通信装置的数据传输。本申请实施例的通信方法400需要在第一通信装置、中继通信装置与第二通信装置都有适配层，该适配层用于数据包的适配头Adapatation Header的添加与识别。若第一消息还包括第三标识信息，则第一通信装置不在数据包的Adapatation Header中带上第三标识信息，而是由中继通信装置在向第二通信装置转发数据包时，在每个数据包的Adapatation Header中带上第三标识信息。第二通信装置接收到数据包后，可以依据数据包携带的第三标识信息映射到相应的PDCP实体。最后第二通信装置根据第一配置信息，将数据正确递交给SDAP实体，从而完成第一通信装置到第二通信装置的通信。本申请实施例的通信方法400由于仅需要在中继通信装置与第二通信装置进行数据包的Adapatation Headerde添加与识别，所以仅需要在中继通信装置与第二通信装置之间有适配层，不需要中继通信装置与第一通信装置之间有适配层。
参考图1、图2和图3所对应的本申请实施例请参见图5，图5示出了根据本申请实施例的通信方法500示意性流程图，在图5所示出的通信方法中，涉及第一通信装置，中继通信装置以及第二通信装置。该第一通信装置，该中继通信装置和该第二通信装置可以为本申请图1、图2和图3中的第一通信装置，中继通信装置以及第二通信装置。该方法500包括但 不限于如下步骤：
S501，第一通信装置根据第四QoS参数信息执行PDCP和SDAP配置，该第一通信装置根据第一QoS参数信息确定SL1的RLC承载的配置信息。
其中，第四QoS参数信息可以为第一通信装置通过中继通信装置向第二通信装置传输数据时，需满足该第一通信装置到该第二通信装置之间端到端传输的QoS参数信息。当第一通信装置通过中继通信装置向第二通信装置发送数据时，第一通信装置可以根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输时需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。可选地，当第一通信装置通过中继通信装置向第二通信装置发送数据时，也可以通过中继通信装置根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输是需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。然后中继通信装置可以将确定的第一QoS参数信息和/或第二QoS参数信息发送给该第一通信装置。该第一QoS参数信息或该第二QoS参数信息分别可以包括PC5 5G服务质量标识(PC5 5G QoS Identifier，PQI)、分配保持优先级(Allocation and Retention Priority，ARP)、保证比特速率(Guarantee Bit Rate，GFBR)等与性能要求相关的参数中的一种或多种，其中，示例性的：PQI为一个QoS流的ID，一个PQI用于标识一条QoS流；ARP包含QoS流的优先级和/或抢占能力，优先级决定了UE资源请求的重要性，在系统资源受限时，ARP决定了一个QoS流是被接受还是被拒绝；GFBR表示由网络保证在平均时间窗口上向QoS流提供的比特率。
可选地，第一QoS参数信息和第二QoS参数信息的确定，可以在第一通信装置上进行，可以在与第一通信装置连接的第一无线网络设备上进行，还可以在中继通信装置上进行。具体的确定方法请参见步骤S401描述，这里不再赘述。
可选地，该SL1的至少一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1的一个或多个RLC承载。
应理解，为了保证通信发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收。SLRB承载配置详细描述请参见S401，这里不再赘述。
当第一通信装置处于不同的连接状态时，SL1的至少一个RLC承载的配置信息的获取方法不同。获取方法的详细描述请参见S401，这里不再赘述。
S502，第一通信装置通过中继通信装置向第二通信装置发送第三消息。
可选地，该第三消息可以是RRCReconfigurationSidelink消息或者其他专用RRC消息或者PC5-S消息。
可选地，该第三消息还包括第一配置信息，该第一配置信息为第一通信装置到第二通信装置PDCP和SDAP承载配置信息，该第二通信装置可以根据接收到的该第一配置信息，将接收到的数据映射到相应的PDCP实体。
可选地，该第三消息包括第三标识信息，该第三标识信息为第一通信装置到第二通信装置的承载标识信息，其中第三标识信息与第一配置信息存在对应关系，同时该第三标识信息也与SL1的RLC承载存在对应关系。第二通信装置可以根据第三标识信息识别对应的PDCP实体，第三标识信息可以是协议中定义的信元SLRB-PC5-ConfigIndex或者其余形式。该第二通信装置可以根据接收到的该第三标识信息标识的该第一通信装置到该第二通信装置传输需建立的承载与该第一配置信息的对应关系，将接收到的数据映射到相应的PDCP实体。
S503，第一通信装置向第二通信装置发送第一消息。
可选地，该第一消息可以是RRCReconfigurationSidelink消息或者其他专用RRC消息或者PC5-S消息。
可选地，该第一消息包括第一标识信息，该第一标识信息用于标识第二通信装置，比如该第一标识信息是第二通信装置的设备识别号。例如，当第一通信装置要通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信。该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，该第一标识信息标识了当前RLC承载配置信息是用于该第一通信装置和第二通信装置进行通信。
可选地，该第一消息还包括SL1的至少一个RLC承载的配置信息。该SL1的至少一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1上的一个或多个RLC承载。应理解，为了保证通信，发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收，所以第一通信装置需要把该SL1的至少一个RLC承载的配置信息发送给中继通信装置。
可选地，若第一通信装置的承载和SL 1上的RLC承载进行1:1的映射，那么第一消息还包括第三标识信息。该第三标识信息标识了第一通信装置到第二通信装置之间的承载和SL1上的RLC承载之间的对应关系，中继通信装置可以根据该第三标识信息为每个SL 1的RLC承载传输的数据包携带第一通信装置到第二通信装置之间的承载标识信息。
S504，中继通信装置建立SL1的承载，并根据第二QoS参数信息确定SL2的RLC承载的配置信息。
示例性地，中继通信装置收到来自第一通信装置发送的SL1的至少一个RLC承载的配置信息后，可以根据该SL1的至少一个RLC承载的配置信息建立SL1的承载。中继通信装置根据第二QoS参数信息确定SL2的至少一个RLC承载的配置信息，并根据该SL2的至少一个RLC承载的配置信息建立SL2上的承载。该第二QoS参数信息由第四QoS参数信息依据预设的算法(比如依据SL1和SL2的信道状态信息)确定的在SL2上进行数据传输需满足的服务质量要求确定的，目的是为了满足第一通信装置到第二通信装置传输数据时，能够满足端到端传输的服务质量要求。由第二QoS参数信息确定该SL2的至少一个RLC承载的配置信息的具体配置方法，根据中继通信装置的状态决定，详细描述请参见步骤S401。
可选地，该SL2的至少一个RLC承载的配置信息用于第二通信装置与中继通信装置建立SL2上至少一个RLC承载。
S505，中继通信装置向第二通信装置发送第二消息。
可选地，该第二消息包括SL2的至少一个RLC承载的配置信息。该第二通信装置根据接收到的该SL2的至少一个RLC承载的配置信息进行SL2的RLC承载配置。
可选地，中继通信系统可以基于上述承载配置，第一通信装置将每个数据包的Adaptation Header中带上第二标识信息和第三标识信息发送给中继通信系统。该中继通信装置接收到数据包后，可以根据每个数据包携带的第二标识信息(如，PFI)，将数据包映射至相应的SL2的承载。中继通信装置还可以把该数据包中的该第二标识信息去掉，使得该数据包仅携带第三标识信息，然后将数据包发送给第二通信装置。该第二通信装置接收到该数据包后，可以依据数据包携带的该第三标识信息映射到相应的PDCP实体。最后该第二通信装置根据该第一配置信息，将数据递交给相应的SDAP实体，从而完成第一通信装置到第二通信装置的数据传输。本申请实施例的通信方法500可以完成第一通信装置通过中继通信装置与第二通信装置通信的目的。
可选地，若第一消息还包括第三标识信息，则第一通信装置不在数据包Adapatation Header 中带上该第三标识信息而是由中继通信装置在向第二通信装置转发数据包时，在每个数据包的Adapatation Header中带上该第三标识信息。第二通信装置接收到数据包后，可以依据数据包携带的第三标识信息映射到相应的PDCP实体。最后第二通信装置根据第一配置信息，将数据递交给相应的SDAP实体，从而完成第一通信装置到第二通信装置的通信。本申请实施例的通信方法500需要在第一通信装置、中继通信装置与第二通信装置都有适配层，该适配层用于数据包的Adapatation Headerde添加与识别。
参考图1、图2和图3所对应的本申请实施例请参见图6，图6示出了根据本申请实施例的通信方法600示意性流程图，在图6所示出的通信方法中，涉及第一通信装置，中继通信装置以及第二通信装置。该第一通信装置，该中继通信装置和该第二通信装置可以为本申请图1、图2和图3中的第一通信装置，中继通信装置以及第二通信装置。该方法600包括但不限于如下步骤：
S601，第一通信装置根据第四QoS参数信息执行PDCP和SDAP配置；第一通信装置根据第一QoS参数信息确定SL1的一个RLC承载的配置信息。
其中，第四QoS参数信息可以为第一通信装置通过中继通信装置向第二通信装置传输数据时，需满足该第一通信装置到该第二通信装置之间端到端传输的QoS参数信息。当第一通信装置通过中继通信装置向第二通信装置发送数据时，第一通信装置可以根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输时需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。可选地，当第一通信装置通过中继通信装置向第二通信装置发送数据时，也可以通过中继通信装置根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输是需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。然后中继通信装置可以将确定的第一QoS参数信息和/或第二QoS参数信息发送给该第一通信装置。该第一QoS参数信息或该第二QoS参数信息分别可以包括PC5 5G服务质量标识(PC5 5G QoS Identifier，PQI)、分配保持优先级(Allocation and Retention Priority，ARP)、保证比特速率(Guarantee Bit Rate，GFBR)等与性能要求相关的参数中的一种或多种，其中，示例性的：PQI为一个QoS流的ID，一个PQI用于标识一条QoS流；ARP包含QoS流的优先级和/或抢占能力，优先级决定了UE资源请求的重要性，在系统资源受限时，ARP决定了一个QoS流是被接受还是被拒绝；GFBR表示由网络保证在平均时间窗口上向QoS流提供的比特率。
可选地，第一QoS参数信息和第二QoS参数信息的确定，可以在第一通信装置上进行，可以在与第一通信装置连接的第一无线网络设备上进行，还可以在中继通信装置上进行。具体的确定方法请参见步骤S401描述，这里不再赘述。
可选地，该SL1的一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1的一个RLC承载。
应理解，为了保证通信，发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收。SLRB承载配置详细描述请参见S401，这里不再赘述。
当第一通信装置处于不同的连接状态时，SL1的一个RLC承载的配置信息的获取方法不同。获取方法的详细描述请参见S401，这里不再赘述。
S602，第一通信装置通过中继通信装置向第二通信装置发送第三消息。
可选地，该第三消息可以是RRCReconfigurationSidelink消息或者其他PC5 RRC消息或者PC5信令(PC5-Signaling，PC5)消息。
可选地，该第三消息还包括第一配置信息，该第一配置信息为第一通信装置到第二通信装置的PDCP和SDAP承载配置信息，该第二通信装置可以根据接收到的该第一配置信息，将接收到的数据映射到相应的PDCP实体。
可选地，该第三消息包括第三标识信息，该第三标识信息为第一通信装置到第二通信装置的承载标识信息，其中第三标识信息与第一配置信息一一对应，同时该第三标识信息也与SL1的RLC承载一一对应。第二通信装置可以根据第三标识信息识别对应的PDCP实体，第三标识信息可以是协议中定义的信元SLRB-PC5-ConfigIndex或者其他形式。该第二通信装置可以根据接收到的该第三标识信息标识的该第一通信装置到该第二通信装置传输需建立的承载与该第一配置信息的对应关系，将接收到的数据映射到相应的PDCP实体。
S603，第一通信装置向第二通信装置发送第一消息。
可选地，该第一消息可以是RRCReconfigurationSidelink消息或者其他PC5 RRC消息或者PC5-S消息。
可选地，该第一消息包括第一标识信息，该第一标识信息用于标识第二通信装置，比如该第一标识信息是第二通信装置的设备识别号。例如，当第一通信装置要通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信。该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，该第一标识信息标识了当前RLC承载配置信息是用于该第一通信装置和第二通信装置进行通信。
可选地，该第一消息还包括SL1的一个RLC承载的配置信息。该SL1的一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1的一个RLC承载。应理解，为了保证通信，发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收，所以第一通信装置需要把该SL1的一个RLC承载的配置信息发送给中继通信装置。
可选地，该第一消息还包括第三标识信息。该第三标识信息为第一通信装置到第二通信装置的承载标识信息，中继通信装置可以将该第三标识信息携带在数据包中，发送给该第二通信装置，该第二通信装置可以根据该数据中的该第三标识信息将数据包映射至相应的PDCP实体。
S604，中继通信装置建立SL1上的承载，1：N映射后，根据每个RLC承载中的第二标识信息确定SL2的承载配置。
示例性地，中继通信装置收到来自第一通信装置发送的SL1的一个RLC承载的配置信息后，中继通信装置根据该SL1的一个RLC承载的配置信息建立SL1上的承载。中继通信装置将SL1上的一个RLC承载映射为SL2的N个RLC承载，并根据该SL2的N个RLC承载包含的第二标识信息(如，PFI信息)来确定其第二QoS参数信息。比如，SL1上的一个RLC承载SLRB1上传输QoS flow1和QoSf low2，则该一个RLC承载SLRB1中包含第二标识信息，该第二标识信息可以为PFI1和PFI2，PFI1和PFI2分别为QoS flow1和QoSf low2的标识。当中继通信装置根据PFI1和PFI2将SL1的承载SLRB1映射为SL2上的SLRB2和SLRB3，其中SLRB2上传输QoS flow1，SLRB3上传输QoS flow2。中继通信装置根据PFI1和PFI2确定SL2上的第二QoS参数信息，并根据该第二QoS参数信息确定SL2的至少一个RLC承载的配置信息。由第二QoS参数信息确定SL2的至少一个RLC承载的配置信息的具体配置方法，根据中继通信装置的状态决定，详细描述请参见步骤S401。
可选地，该SL2的至少一个RLC承载的配置信息用于第二通信装置与中继通信装置建立SL2上的至少一个RLC承载。
S605，中继通信装置向第二通信装置发送第二消息。
可选地，该第二消息包括SL2的至少一个RLC承载的配置信息。示例性地，第二通信装置根据接收到的SL2的至少一个RLC承载的配置信息进行SL2的RLC承载配置。
可选地，该第二消息还包括第三标识信息。该第三标识信息与SL2上的RLC承载一一对应。第二通信装置根据该第三标识信息将SL2上不同RLB承载内的数据递交给相应的PDCP实体。
可选地，中继通信系统可以基于上述承载配置，第一通信装置将每个数据包的Adaptation Header中带上第二标识信息发送给中继通信装置。当该中继通信装置接收到数据包后，可以根据每个数据包携带的第二标识信息，将数据包映射至相应的SL2的承载。在完成SL2上的承载映射后，中继通信装置可以把数据包中的该第二标识信息去掉，并将该数据包转发给第二通信装置。第二通信装置接收到该数据包后，可以依据第二消息中携带的第三标识信息，将数据包映射到相应的PDCP实体。最后第二通信装置根据第一配置信息，将数据递交给相应的SDAP实体，从而完成第一通信装置到第二通信装置的通信。本申请实施例的通信方法600由于是SL1的一个承载映射为SL2的N个承载，所以不需要在中继通信装置与第二通信装置进行数据包的Adapatation Headerde添加与识别，不需要中继通信装置与第二通信装置之间有适配层，且不需要在数据包的Adaptation Header中携带第三标识信息。
基于图1、图2和图3请参见图7，图7示出了根据本申请实施例的通信方法700示意性流程图，在图7所示出的通信方法中，涉及第一通信装置，中继通信装置以及第二通信装置。该第一通信装置，该中继通信装置和该第二通信装置可以为本申请图1、图2和图3中的第一通信装置，中继通信装置以及第二通信装置。该方法700包括但不限于如下步骤：
S701，第一通信装置根据第四QoS参数信息执行PDCP和SDAP配置；第一通信装置根据第一QoS参数信息确定SL1的一个RLC承载的配置信息。
其中，第四QoS参数信息可以为第一通信装置通过中继通信装置向第二通信装置传输数据时，需满足该第一通信装置到该第二通信装置之间端到端传输的QoS参数信息。当第一通信装置通过中继通信装置向第二通信装置发送数据时，第一通信装置可以根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输时需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。可选地，当第一通信装置通过中继通信装置向第二通信装置发送数据时，也可以通过中继通信装置根据第四QoS参数信息，使用预设的算法(比如依据SL1和SL2的信道状态信息)分别确定在SL1上进行数据传输是需满足的第一QoS参数信息以及在SL2上进行数据传输需满足的第二QoS参数信息。然后中继通信装置可以将确定的第一QoS参数信息和/或第二QoS参数信息发送给该第一通信装置。该第一QoS参数信息或该第二QoS参数信息分别可以包括PC5 5G服务质量标识(PC5 5G QoS Identifier，PQI)、分配保持优先级(Allocation and Retention Priority，ARP)、保证比特速率(Guarantee Bit Rate，GFBR)等与性能要求相关的参数中的一种或多种，其中，示例性的：PQI为一个QoS流的ID，一个PQI用于标识一条QoS流；ARP包含QoS流的优先级和/或抢占能力，优先级决定了UE资源请求的重要性，在系统资源受限时，ARP决定了一个QoS流是被接受还是被拒绝；GFBR表示由网络保证在平均时间窗口上向QoS流提供的比特率。
可选地，第一QoS参数信息和第二QoS参数信息的确定，可以在第一通信装置上进行，可以在与第一通信装置连接的第一无线网络设备上进行，还可以在中继通信装置上进行。具体的确定方法请参见步骤S401描述，这里不再赘述。
可选地，该SL1的一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1的一个RLC承载。
应理解，为了保证通信，发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收。SLRB承载配置详细描述请参见S401，这里不再赘述。
当第一通信装置处于不同的连接状态时，SL1的一个RLC承载的配置信息的获取方法不同。获取方法的详细描述请参见S401，这里不再赘述。
S702，第一通信装置通过中继通信装置向第二通信装置发送第三消息。
可选地，该第三消息可以是RRCReconfigurationSidelink消息或者其他PC5 RRC消息或者PC5信令(PC5-Signaling，PC5)消息。
可选地，该第三消息还包括第一配置信息，该第一配置信息为第一通信装置到第二通信装置的PDCP和SDAP承载配置信息，该第二通信装置可以根据接收到的该第一配置信息，将接收到的数据映射到相应的PDCP实体。。
可选地，该第三消息包括第三标识信息，该第三标识信息为第一通信装置到第二通信装置的承载标识信息，其中第三标识信息与第一配置信息一一对应，同时该第三标识信息也与SL1的RLC承载一一对应。第二通信装置可以根据第三标识信息识别对应的PDCP实体，第三标识信息可以是协议中定义的信元SLRB-PC5-ConfigIndex或者其他形式。该第二通信装置可以根据接收到的该第三标识信息标识的该第一通信装置到该第二通信装置传输需建立的承载与该第一配置信息的对应关系，将接收到的数据映射到相应的PDCP实体。
S703，第一通信装置向第二通信装置发送第一消息。
可选地，该第一消息可以是RRCReconfigurationSidelink消息或者其他PC5 RRC消息或者PC5-S消息。
可选地，该第一消息包括第一标识信息，该第一标识信息用于标识第二通信装置，比如该第一标识信息是第二通信装置的设备识别号。例如，当第一通信装置要通过中继通信装置与第二通信装置通信时，该中继通信装置并不知道当前的承载配置用于和哪个通信装置通信。该第一通信装置通过第一消息向该中继通信装置发送第一标识信息，该第一标识信息标识了当前RLC承载配置信息是用于该第一通信装置和第二通信装置进行通信。
可选地，该第一消息还包括SL1的一个RLC承载的配置信息。该SL1的一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1上的一个RLC承载。应理解，为了保证通信，发送方和接收方需要有一致的SLRB承载配置，用于控制数据的发送或者接收，所以第一通信装置需要把该SL1的一个RLC承载的配置信息发送给中继通信装置。
可选地，该第一参数信息还包括第二标识信息。第二标识信息为SL 1上的一个RLC承载对应的PC5服务质量流标识(PFI)。中继通信装置根据第一通信装置发送过来的一个RLC承载对应的PFI确定对应的QoS流，进而根据该QoS流确定SL 1上的一个RLC承载在SL 2上应满足的QoS参数要求。
可选地，该第一消息还包括第三标识信息。该第三标识信息为第一通信装置到第二通信装置的承载标识信息，该第二通信装置可以根据接收到的该第三标识信息标识的该第一通信装置到该第二通信装置传输需建立的承载与该第一配置信息的对应关系，将接收到的数据映射到相应的PDCP实体。。
S704，中继通信装置建立SL1上的承载，1:1映射后，根据SL2上的第二QoS参数信息确定SL2的一个RLC承载的配置信息。
示例性地，中继通信装置收到来自第一通信装置发送的SL1的一个RLC承载的配置 信息后，中继通信装置根据该SL1的一个RLC承载的配置信息建立SL1上的承载。中继通信装置将SL1上的一个承载一一映射为SL2上的一个承载。中继通信装置根据SL1上的一个RLC承载对应的第二标识信息来确定SL2上的第二QoS参数信息，并根据该第二QoS参数信息来确定SL2上的第二参数信息。例如，L1上的一个承载SLRB1其上传输QoS flow1和QoS flow2，其对应的PC5服务质量流标识分别为PFI1和PFI2。中继通信装置将SL1的承载SLRB1一一映射为SL2的SLRB2，其中SLRB2上传输QoS flow1和QoS flow2。若第一参数信息包括第二标识信息，中继通信装置依据第二标识信息中QoS flow1和QoS flow2的PFI1和PFI2确定SL2上的第二QoS参数信息，并根据该第二QoS参数信息确定SL2的一个RLC承载的配置信息。若第一参数信息包括RLC承载对应的QoS参数要求。则直接根据第一参数信息中的QoS参数信息确定SL2的一个RLC承载的配置信息。由第二QoS参数信息确定SL2上一个RLC承载的配置信息的具体配置方法，根据中继通信装置的状态决定，详细描述请参见步骤S401。
可选地，该SL2的一个RLC承载的配置信息用于第二通信装置与中继通信装置建立SL2上的一个RLC承载。
S705，中继通信装置向第二通信装置发送第二消息。
可选地，该第二消息包括SL2的一个RLC承载的配置信息。该第二通信装置根据接收到的SL2上的一个RLC承载的配置信息进行SL2的RLC承载配置。
可选地，该第二消息还包括第三标识信息。该第三标识信息与SL2上的RLC承载一一对应。第二通信装置根据该第三标识信息将接收到的数据包递交给相应的PDCP实体。
中继通信系统可以基于上述承载配置，第一通信装置将数据包通过中继通信装置发送给第二通信装置。第二通信装置接收到数据包后，可以依据SL2的一个承载对应的第三标识信息将数据包映射到相应的PDCP实体。最后第二通信装置根据第一配置信息，将数据递交给相应的SDAP实体，从而完成第一通信装置到第二通信装置的通信。本申请实施例的通信方法700由于是SL1的一个承载映射为SL2的一个承载，所以不需要第一通信装置与中继通信装置之间以及中继通信装置与第二通信装置之间有适配层，且不需要在数据包携带额外的标识信息，比如第三标识信息和第二标识信息。本申请实施例的通信方法700可以完成第一通信装置通过中继通信装置与第二通信装置通信的目的。
可以理解的是，为了实现上述实施例中功能，前述第一通信装置，前述中继通信装置以及前述第二通信装置包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的单元及方法步骤，本申请能够以硬件或硬件和计算机软件相结合的形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。
图8，图9和图10为本申请的实施例提供的可能的通信装置的示意性框图。这些通信装置可以用于分别实现上述方法实施例中第一通信装置，中继通信装置和第二通信装置的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请的实施例中，该通信装置可以是上述方法实施例中第一通信装置，中继通信装置和第二通信装置本身，也可以是应用于上述第一通信装置，中继通信装置和第二通信装置中的模块。
如图8所示，通信装置800包括处理模块810和收发模块820。通信装置800用于实现上述图3、图4、图5、图6或图7中所对应的实施例中第一通信装置的功能。
当通信装置800用于实现图3、图4、图5、图6或图7中所示的方法实施例中第一通信装置的功能时，示例性地：
处理模块810用于根据第四QoS参数信息配置PDCP和SDAP。
可选地，处理模块810还用于根据第一QoS参数信息确定SL1的至少一个RLC承载的配置信息。
可选地，处理模块810还用于根据SL1的至少一个RLC承载的配置信息建立SL1上的承载。
可选地，处理模块810还用于在第一数据单元携带第三标识信息和/或第二标识信息。
收发模块820，还用于向第二通信装置发送第三消息。可选地，该第三消息可以是RRCReconfigurationSidelink消息。
可选地，该第三消息还包括第一配置信息，该第一配置信息为第一通信装置到第二通信装置PDCP和SDAP承载配置信息。
可选地，该第三消息包括第三标识信息，该第三标识信息为第一通信装置到第二通信装置的承载标识信息，其中第三标识信息与第一配置信息一一对应，同时该第三标识信息也与SL1的RLC承载一一对应。
可选地，该收发模块820还用于向中继通信模块发送第一消息。该第一消息可以是RRCReconfigurationSidelink消息。
可选地，该第一消息包括第一标识信息，该第一标识信息用于标识第二通信装置。
可选地，该第一消息还包括SL1的至少一个RLC承载的配置信息。该SL1的至少一个RLC承载的配置信息用于第一通信装置与中继通信装置建立SL1上的一个或多个RLC承载。
可选地，该第一消息还包括第三标识信息。该第三标识信息为第一通信装置到第二通信装置的承载标识信息。
可选地，该第一消息还包括第二标识信息。该第二标识信息包括PC5服务质量流标识(PFI)。
收发模块820，还用于向中继通信模块发送第一数据单元。
以上仅为当通信装置800用于实现图3、图4、图5、图6或图7中所示的方法实施例中第一通信装置的功能时的部分举例，通信装置800中处理模块810和收发模块820的功能，可参考图3、图4、图5、图6或图7中所示的方法实施例中第一通信装置的操作。
如图9所示，通信装置900包括处理模块910和收发模块920。通信装置900用于实现上述图3、图4、图5、图6或图7中所对应的实施例中中继通信装置的功能。
当通信装置900用于实现图3、图4、图5、图6或图7中所示的方法实施例中中继通信装置的功能时，示例性地：
处理模块910用于根据SL1的至少一个RLC承载的配置信息建立SL1上的承载。
可选地，处理模块910还用于考虑承载N:1映射后SL1上的所有承载在SL2上的QoS参数情况，确定SL2的一个RLC承载的配置信息。
可选地，处理模块910还用根据第二QoS参数信息，确定SL2的至少一个RLC承载的配置信息。
可选地，处理模块910还用根据承载1:N映射后每个RLC承载中的第二标识信息，确定SL2的至少一个RLC承载的配置信息。
可选地，处理模块910还用根据承载1:1映射后SL2上第二QoS参数信息，确定SL2的至少一个RLC承载的配置信息。
处理模块910用于根据第二参数信息建立SL2上的承载。
收发模块920，用于接收第一通信装置发送的第一消息。
收发模块920，还用于向第二通信装置发送的第二消息。可选地，该第二消息包括SL2的至少一个RLC承载的配置信息。可选地，该第二消息包括第三标识信息。
收发模块920，还用于接收第一通信装置发送的第一数据单元。
收发模块920，还用于向第二通信装置发送的第二数据单元。
以上仅为当通信装置900用于实现图3、图4、图5、图6或图7中所示的方法实施例中中继通信装置的功能时的部分举例，通信装置900中处理模块910和收发模块920的功能，可参考图3、图4、图5、图6或图7中所示的方法实施例中中继通信装置的操作。
如图10所示，通信装置1000包括处理模块1010和收发模块1020。通信装置1000用于实现上述图3、图4、图5、图6或图7中所对应的实施例中第二通信装置的功能。
当通信装置1000用于实现图3、图4、图5、图6或图7中所示的方法实施例中第二通信装置的功能时，示例性地：
处理模块1010用于根据SL2的至少一个RLC承载的配置信息建立SL2上的承载。
可选地，处理模块1010用于将接收到的数据包正确映射到相应的PDCP实体。
收发模块1020，用于接收第二通信装置发送的第二消息。
收发模块1020，用于接收第二通信装置发送的第二数据单元。
以上仅为当通信装置1000用于实现图3、图4、图5、图6或图7中所示的方法实施例中第二通信装置的功能时的部分举例，通信装置1000中处理模块1010和收发模块1020的功能，可参考图3、图4、图5、图6或图7中所示的方法实施例中第二通信装置的操作。
上述第一消息，第二消息，第三消息，SL1的至少一个RLC承载的配置信息，SL2的至少一个RLC承载的配置信息，第一配置信息，第一标识，第三标识，第一QoS参数，第二QoS参数，第三QoS参数以及第四QoS参数相关信息的具体描述可以参考本申请实施例S400中的描述。
图11为本申请实施例提供的一种通信装置的再一示意性框图。如图11所示，通信装置1100包括处理器1110和接口电路1130。处理器1110和接口电路1130之间相互耦合。可以理解的是，接口电路1130可以为收发器或输入输出接口。
可选的，通信装置1100还可以包括存储器1120，用于存储处理器1120执行的指令或存储处理器1110运行指令所需要的输入数据或存储处理器1110运行指令后产生的数据。
当通信装置1100用于实现图3、图4、图5、图6或图7所示的第一通信装置的功能时，处理器1110用于实现上述处理模块810的功能，接口电路1130用于实现上述收发模块820的功能。
当通信装置1100用于实现图3、图4、图5、图6或图7所示的中继通信装置的功能时，处理器1110用于实现上述处理模块910的功能，接口电路1130用于实现上述收发模块920的功能。
当通信装置1100用于实现图3、图4、图5、图6或图7所示的第二通信装置的功能时，处理器1110用于实现上述处理模块1010的功能，接口电路1130用于实现上述收发模块1020的功能。
可选地，通信装置1100还包括总线1140，该处理器1110、该接口电路1130和该存储器1120可以通过总线1140进行通信。
本申请实施例还提供了一种系统芯片，该系统芯片包括输入输出接口、至少一个处理器、至少一个存储器和总线，该至少一个存储器用于存储指令，该至少一个处理器用于调用该至少一个存储器的指令，以进行上述各个方面的方法的操作。
在本申请实施例中，应注意，本申请实施例上述的方法实施例可以应用于处理器中，或者由处理器实现。处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。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。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品可以包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁盘)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。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或者该技术方案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中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
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所述以权利要求的保护范围为准。

Claims (31)

  1. 一种通信方法，其特征在于，包括：
    中继通信装置接收来自于第一通信装置的第一消息，所述第一消息包含：第一参数信息和所述中继通信装置与所述第一通信装置之间的第一侧行链路的至少一个无线链路控制(RLC)承载的配置信息，所述第一侧行链路的至少一个RLC承载的配置信息是根据所述第一侧行链路的第一服务质量(QoS)参数信息确定的；
    所述中继通信装置向第二通信装置发送第二消息，所述第二消息包含所述中继通信装置与所述第二通信装置之间的第二侧行链路的一个RLC承载的配置信息，所述第二侧行链路的所述一个RLC承载的配置信息是根据所述第一参数信息确定的。
  2. 根据权利要求1所述的方法，其特征在于，所述第一消息还包含第一标识信息，所述第一标识信息用于标识所述第二通信装置。
  3. 根据权利要求1或2所述的方法，其特征在于：
    所述第一参数信息包括：第二QoS参数信息，所述第二QoS参数信息包括：所述第一侧行链路的所述至少一个RLC承载的QoS流(flow)在所述第二侧行链路上传输时，所述至少一个RLC承载的QoS flow应满足的QoS参数；
    或者，
    所述第一参数信息包括：第二标识信息，所述第二标识信息包括：所述第一侧行链路的所述至少一个RLC承载所对应的PC5服务质量流标识(PFI)信息，所述PFI信息用于所述中继通信装置确定第二QoS参数信息，所述第二QoS参数信息包括：所述第一侧行链路的所述至少一个RLC承载的QoS流(flow)在所述第二侧行链路上传输时，所述至少一个RLC承载的QoS flow应满足的QoS参数。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    所述中继通信装置根据所述第二QoS参数信息确定第三QoS参数信息，所述第三QoS参数信息用于所述中继通信装置确定所述第二侧行链路的所述一个RLC承载的配置信息。
  5. 根据权利要求4所述的方法，其特征在于，所述第一QoS参数信息和所述第三QoS参数信息满足第四QoS参数信息的要求，所述第四QoS参数信息为所述第一通信装置向所述第二通信装置传输数据时需满足的QoS参数信息。
  6. 根据权利要求5所述的方法，其特征在于，所述中继通信装置根据所述第二QoS参数信息确定所述第三QoS参数信息，包括如下任一种：
    在所述第二QoS参数信息中，选择优先级最高的QoS flow对应的QoS参数信息作为所述第三QoS参数信息；
    或者，
    在所述第二QoS参数信息中，选择包延迟预算最低的QoS flow对应的QoS参数信息作为所述第三QoS参数信息；
    或者，
    在所述第二QoS参数信息中，选择保证流比特率要求最高的QoS flow对应QoS参数信息作为所述第三QoS参数信息；
    或者，
    在所述第二QoS参数信息中，选择分组错误率要求最低的QoS flow对应的QoS参数信息作为所述第三QoS参数信息；
    或者，
    在所述第二QoS参数信息中，选择各项要求都最高的QoS参数信息作为所述第三QoS参数信息；
    或者，
    在所述第二QoS参数信息中，选择QoS参数的平均值作为所述第三QoS参数信息。
  7. 根据权利要求4-6中任一所述的方法，其特征在于，所述方法还包括：
    所述中继通信装置根据所述第三QoS参数信息确定所述第二侧行链路的所述一个RLC承载的配置信息；
    所述中继通信装置根据所述第三QoS参数信息确定所述第二侧行链路的所述一个RLC承载的配置信息，包括如下任一种操作：
    所述中继通信装置处于连接态，所述中继通信装置向网络设备发送所述第三QoS参数信息，所述中继通信装置接收由所述网络设备根据所述第三QoS参数信息确定的所述第二侧行链路的所述一个RLC承载的配置信息；
    或者，
    所述中继通信装置处于空闲态或者非激活态，所述中继通信装置根据网络设备广播的系统消息中的承载配置信息确定所述第二侧行链路的所述一个RLC承载的配置信息；
    或者，
    所述中继通信装置处于小区覆盖范围外，所述中继通信装置根据预配置的承载配置信息确定所述第二侧行链路的所述一个RLC承载的配置信息。
  8. 根据权利要求1-7中任一所述的方法，其特征在于，所述方法还包括：
    所述中继通信装置接收来自所述第一通信装置的第一数据单元，所述第一数据单元中携带第三标识信息，所述第三标识信息用于标识所述第一通信装置和所述第二通信装置之间的承载；
    所述中继通信装置向所述第二通信装置发送所述第一数据单元。
  9. 根据权利要求1-7中任一所述的方法，其特征在于，所述方法还包括：
    所述第一消息还包含第三标识信息，所述第三标识信息用于标识所述第一通信装置和所述第二通信装置之间的承载，所述第三标识信息与所述第一侧行链路的所述至少一个RLC承载具有对应关系。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述中继通信装置接收来自于所述第一通信装置的第一数据单元；
    所述中继通信装置向所述第二通信装置发送添加了所述第三标识信息的所述第一数据单元。
  11. 一种通信方法，其特征在于，包括：
    第一通信装置产生第一消息；
    所述第一通信装置向中继通信装置发送所述第一消息，所述第一消息包含：第一参数信息和第一侧行链路的至少一个无线链路控制(RLC)承载的配置信息，其中，所述第一侧行链路为所述第一通信装置和所述中继通信装置之间的通信链路，所述第一参数信息用于确定所述中继通信装置与第二通信装置之间的第二侧行链路的一个RLC承载的配置信息，所述第一侧行链路的所述至少一个RLC承载的配置信息是根据所述第一侧行链路的第一服务质量(QoS)参数信息确定的。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    所述第一通信装置通过所述中继通信装置向所述第二通信装置发送第三消息，所述第三 消息包含第一配置信息，所述第一配置信息包括用于在所述第一通信装置和所述第二通信装置之间进行传输所需的分组数据汇聚层协议(PDCP)和服务数据适配协议(SDAP)的配置信息。
  13. 根据权利要求12所述的方法，其特征在于，所述第三消息还包含第三标识信息，所述第三标识信息用于标识所述第一通信装置和所述第二通信装置之间的承载，所述第三标识信息与所述第一配置信息具有对应关系。
  14. 根据权利要求11-13中任一所述的方法，其特征在于，所述第一消息还包含第一标识信息，所述第一标识信息用于标识所述第二通信装置。
  15. 根据权利要求11-14中任一所述的方法，其特征在于，
    所述第一参数信息包括：第二QoS参数信息，所述第二QoS参数信息包括：所述第一侧行链路的所述至少一个RLC承载的QoS流(flow)在第二侧行链路上传输时，所述至少一个RLC承载的QoS flow应满足的QoS参数要求；
    或者，
    所述第一参数信息包括：第二标识信息，所述第二标识信息包括：所述第一侧行链路的所述至少一个RLC承载所对应的PC5服务质量流标识(PFI)信息，所述PFI信息用于所述中继通信装置确定第二QoS参数信息，所述第二QoS参数信息包括：所述第一侧行链路的所述至少一个RLC承载的QoS flow在第二侧行链路上传输时，所述至少一个RLC承载的QoS flow应满足的QoS参数要求。
  16. 根据权利要求11-15中任一所述的方法，其特征在于，所述第一侧行链路的所述至少一个RLC承载的配置信息是根据所述第一侧行链路的所述第一QoS参数信息确定的，包括：
    所述第一通信装置处于连接态，所述第一通信装置向网络设备发送所述第一QoS参数信息，所述第一通信装置接收由所述网络设备根据所述第一QoS参数信息确定的所述第一侧行链路的所述至少一个RLC承载的配置信息；
    或者
    所述第一通信装置处于空闲态或者非激活态，所述第一通信装置网络设备广播的系统消息中的承载配置信息确定所述第一侧行链路的所述至少一个RLC承载的配置信息；
    或者
    所述第一通信装置处于小区覆盖范围外，所述第一通信装置根据预配置的承载配置信息确定所述第一侧行链路的所述至少一个RLC承载的配置信息。
  17. 根据权利要11-16中任一所述的方法，其特征在于，所述方法还包括：
    所述第一通信装置向所述中继通信装置发送第一数据单元，所述第一数据单元中携带第三标识信息，所述第三标识信息用于标识所述第一通信装置和所述第二通信装置之间的承载。
  18. 根据权利要求11-16中任一所述的方法，其特征在于，所述第一消息还包含第三标识信息，所述第三标识信息用于标识所述第一通信装置和所述第二通信装置之间的承载，所述第三标识信息与所述第一侧行链路的所述至少一个RLC承载具有对应关系。
  19. 一种通信方法，其特征在于，包括：
    第二通信装置接收来自于中继通信装置的第二消息，所述第二消息包含所述第二通信装置与所述中继通信装置之间的第二侧行链路的一个无线链路控制(RLC)承载的配置信息；
    所述第二通信装置根据所述第二侧行链路的所述一个RLC承载的配置信息与所述中继通信装置进行通信。
  20. 根据权利要求19所述的方法，其特征在于，所述第二通信装置接收来自于第一通信装置的第三消息，所述第三消息包含第一配置信息；
    所述第一配置信息包括用于在所述第一通信装置和所述第二通信装置之间进行传输所需的分组数据汇聚层协议(PDCP)和服务数据适配协议(SDAP)的配置信息。
  21. 根据权利要求20所述的方法，其特征在于，所述第三消息还包含第三标识信息，所述第三标识信息用于标识所述第一通信装置和所述第二通信装置之间的承载，所述第三标识信息与所述第一配置信息具有对应关系。
  22. 根据权利要求19-21中任一所述的方法，其特征在于，所述方法还包括：
    所述第二通信装置接收来自于所述中继通信装置的第一数据单元，所述第一数据单元携带第三标识信息，所述第三标识信息与所述第一配置信息具有对应关系。
  23. 一种通信装置，应用于中继通信装置，其特征在于，包括用于执行权利要求1-10任一项所述的方法的模块。
  24. 一种通信装置，应用于第一通信装置，其特征在于，包括用于执行权利要求11-18任一项所述的方法的模块。
  25. 一种通信装置，应用于第二通信装置，其特征在于，包括用于执行权利要求19-22任一项所述的方法的模块。
  26. 一种通信装置，应用于中继通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述装置之外的其它装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述装置之外的其它装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1-10中任一项所述的方法。
  27. 一种通信装置，应用于第一通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述装置之外的其它装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述装置之外的其它装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求11-18中任一项所述的方法。
  28. 一种通信装置，应用于第二通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述装置之外的其它装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述装置之外的其它装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求19-22中任一项所述的方法。
  29. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现权利要求1-10任一项所述的方法，或实现权利要求11-18任一项所述的方法，或实现权利要求19-22任一项所述的方法。
  30. 一种计算机程序产品，其特征在于，当所述计算机程序产品被通信装置执行时，权利要求1-10任一项所述的方法得以实现，或权利要求11-18任一项所述的方法得以实现，或权利要求19-22任一项所述的方法得以实现。
  31. 一种通信系统，包括如下中一个或多个：如权利要求23-28中任一项所述的通信装置。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024169699A1 (zh) * 2023-02-17 2024-08-22 华为技术有限公司 无线承载的配置方法、设备和可读存储介质
WO2024169678A1 (zh) * 2023-02-17 2024-08-22 华为技术有限公司 侧行链路通信方法和装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117044289A (zh) * 2021-03-31 2023-11-10 苹果公司 对于侧链路中继的服务质量（qos）增强
US20230007455A1 (en) * 2021-07-01 2023-01-05 Asustek Computer Inc. Method and apparatus for receiving pc5 signaling (pc5-s) messages in a wireless communication system
KR20230005745A (ko) * 2021-07-01 2023-01-10 아서스테크 컴퓨터 인코포레이션 무선 통신 시스템에서 pc5-s 메시지들을 송신하기 위한 방법 및 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150065154A1 (en) * 2012-04-05 2015-03-05 Nokia Solutions And Networks Oy Device to device communications
CN107113683A (zh) * 2014-12-17 2017-08-29 瑞典爱立信有限公司 用于移动性管理的方法和装置
US20180279319A1 (en) * 2017-03-23 2018-09-27 Nokia Technologies Oy Dynamic provisioning of quality of service for end-to-end quality of service control in device-to-device communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150065154A1 (en) * 2012-04-05 2015-03-05 Nokia Solutions And Networks Oy Device to device communications
CN107113683A (zh) * 2014-12-17 2017-08-29 瑞典爱立信有限公司 用于移动性管理的方法和装置
US20180279319A1 (en) * 2017-03-23 2018-09-27 Nokia Technologies Oy Dynamic provisioning of quality of service for end-to-end quality of service control in device-to-device communication

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ASUSTEK: "Discussion on CP protocol stack for L2 U2U relay", 3GPP DRAFT; R2-2101754, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20210125 - 20210205, 15 January 2021 (2021-01-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051974619 *
OPPO: "KI#4, Conclusion for U2U relay", 3GPP DRAFT; S2-2100688, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Electronic meeting; 20210224 - 20210309, 18 February 2021 (2021-02-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052173013 *
See also references of EP4280677A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024169699A1 (zh) * 2023-02-17 2024-08-22 华为技术有限公司 无线承载的配置方法、设备和可读存储介质
WO2024169678A1 (zh) * 2023-02-17 2024-08-22 华为技术有限公司 侧行链路通信方法和装置

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