WO2023015413A1 - 针对sl的复制传输方法、装置、设备及存储介质 - Google Patents

针对sl的复制传输方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023015413A1
WO2023015413A1 PCT/CN2021/111574 CN2021111574W WO2023015413A1 WO 2023015413 A1 WO2023015413 A1 WO 2023015413A1 CN 2021111574 W CN2021111574 W CN 2021111574W WO 2023015413 A1 WO2023015413 A1 WO 2023015413A1
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Prior art keywords
terminal device
configuration information
transmission
signaling
copy
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PCT/CN2021/111574
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English (en)
French (fr)
Inventor
付喆
卢前溪
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202180101252.1A priority Critical patent/CN117859385A/zh
Priority to PCT/CN2021/111574 priority patent/WO2023015413A1/zh
Publication of WO2023015413A1 publication Critical patent/WO2023015413A1/zh
Priority to US18/425,645 priority patent/US20240172008A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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 embodiments of the present application relate to the field of communication technologies, and in particular to a copy transmission method, device, device and storage medium for SL (Sidelink, Sidelink).
  • Embodiments of the present application provide a copy transmission method, device, device and storage medium for SL. Described technical scheme is as follows:
  • a copy transmission method for SL is provided, the method is executed by a first terminal device, and the method includes:
  • configuration information where the configuration information is used to configure replication transmission for SL;
  • a copy transmission method for SL is provided, the method is executed by a network device, and the method includes:
  • the configuration information is used to configure the copy transmission for SL.
  • a copy transmission device for SL includes:
  • An acquisition module configured to acquire configuration information, and the configuration information is used to configure copy transmission for SL;
  • the transmission module is configured to perform SL transmission with the second terminal device according to the configuration information.
  • a copy transmission device for SL includes:
  • a sending module configured to send configuration information to at least one terminal device, where the configuration information is used to configure copy transmission for SL.
  • This application provides a copy transmission scheme for SL, which obtains configuration information through the first terminal device and performs SL copy data transmission with the second terminal device according to the configuration information, which helps to improve the reliability of data transmission between terminal devices in SL , to meet more business needs.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 exemplarily shows a schematic diagram of the corresponding relationship between various protocol layer entities of the terminal device
  • FIG. 3 exemplarily shows a schematic diagram of duplicating transmission in the PDCP layer
  • FIG. 4 is a flow chart of a copy transmission method for SL provided by an embodiment of the present application.
  • FIG. 5 is a block diagram of an SL copy transmission device provided by an embodiment of the present application.
  • FIG. 6 is a block diagram of an SL copy transmission device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) network deployment scenario.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent network deployment scenario
  • the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to a licensed spectrum, wherein the licensed spectrum can also be Considered as unshared spectrum.
  • Non-Terrestrial Networks NTN
  • TN terrestrial communication network
  • FIG. 1 shows a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the network architecture may include: a core network 11 , an access network 12 and a terminal device 13 .
  • the core network 11 includes several core network devices.
  • the functions of the core network equipment are mainly to provide user connections, manage users, and carry out services, and provide an interface to the external network as a bearer network.
  • the core network of the 5G (5th Generation, fifth-generation mobile communication technology) NR (New Radio, new air interface) system may include AMF (Access and Mobility Management Function, access and mobility management function) entities, UPF (User Plane Function, user plane function) entity and SMF (Session Management Function, session management function) entity and other devices.
  • AMF Access and Mobility Management Function, access and mobility management function
  • UPF User Plane Function
  • user plane function User Plane Function
  • SMF Session Management Function, session management function
  • the access network 12 includes several access network devices 14.
  • the access network in the 5G NR system may be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
  • the access network device 14 is a device deployed in the access network 12 to provide a wireless communication function for the terminal device 13 .
  • the access network device 14 may include various forms of macro base stations, micro base stations, relay stations, access points and so on.
  • the names of devices with access network device functions may be different.
  • they are called gNodeB or gNB.
  • the name "access network equipment” may change.
  • the above-mentioned devices that provide the wireless communication function for the terminal device 13 are collectively referred to as access network devices.
  • the number of terminal devices 13 is generally multiple, and one or more terminal devices 13 may be distributed in a cell managed by each access network device 14 .
  • the terminal device 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) etc.
  • the devices mentioned above are collectively referred to as terminal devices.
  • the access network device 14 and the core network device communicate with each other through some air technology, such as the NG interface in the 5G NR system.
  • the access network device 14 and the terminal device 13 communicate with each other through some air technology, such as Uu interface.
  • Terminal equipment 13 and terminal equipment 13 (such as vehicle equipment and other equipment (such as other vehicle equipment, mobile phone, RSU (Road Side Unit, Road Side Unit) etc.) , the fifth interface of the nearest neighbor communication)) to communicate with each other.
  • the communication link established based on the direct communication interface can be called a direct link or SL.
  • SL transmission is between the terminal equipment and the terminal equipment through the side chain Unlike traditional cellular systems where communication data is received or sent through access network equipment, SL transmission has the characteristics of short delay and low overhead, and is suitable for two terminal devices that are geographically close to each other (such as Communications between on-board equipment and other peripheral equipment that are geographically close to each other).
  • the "5G NR system" in the embodiment of the present application may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solutions described in the embodiments of this application can be applied to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems, and can also be applied to systems such as NB-IoT (Narrow Band Internet of Things, narrowband Internet of Things) system and other communication systems, this application is not limited to this.
  • NB-IoT Near Band Internet of Things, narrowband Internet of Things
  • the network device may provide services for the cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell, and the cell may be
  • a cell corresponding to a network device (such as a base station) may belong to a macro base station or a base station corresponding to a small cell.
  • the small cell here may include: a Metro cell, a Micro cell, Pico cell, Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • UE and terminal equipment have the same meaning, and the two can replace each other; network equipment, access network equipment, and base station have the same meaning, and the three can replace each other.
  • the PDCP Packet Data Convergence Protocol, Packet Data Convergence Protocol
  • PDCP Packet Data Convergence Protocol
  • the NR protocol stack can be divided into the control plane part and the user plane part.
  • the control plane protocol stack is divided into the air interface system and the IP (Internet Protocol, Internet Protocol) system from the bottom layer to the top layer.
  • the air interface system includes the PHY (Physical, physical ) layer, MAC (Medium Access Control, Media Access Control) layer, RLC (Radio Link Control, Radio Link Control) layer, and PDCP layer, and the IP system includes the RRC (Radio Resource Control, Radio Resource Control) layer.
  • the PDCP layer is the boundary layer between the wireless layer and the upper layer.
  • the main functions of the PDCP layer include: IP data packet and header compression, user data encryption, control data encryption, data integrity protection, and retransmission sorting/duplication sending .
  • RRC Resource Control
  • RB Radio Bearer, radio bearer
  • RLC Radio Link Control
  • FIG. 2 shows the corresponding relationship between various protocol layer entities of the terminal device.
  • the PDCP layer consists of multiple PDCP entities, and each PDCP entity can process one RB.
  • the sending end establishes the corresponding relationship between the PDCP entity and the RB based on the request of the upper layer.
  • RRC is a protocol entity used to manage RBs, and the sender and receiver complete the establishment, modification and release of RBs through RRC signaling.
  • RB is the channel through which the Uu interface connects the sender and receiver.
  • protocol layers such as the PHY layer, MAC layer, RLC layer, and PDCP layer, any data transmitted through the Uu interface must pass through the RB.
  • RB includes two types: DRB (Data Radio Bearer, data radio bearer) and SRB (Signalling Radio Bearer, signaling radio bearer).
  • DRB Data Radio Bearer, data radio bearer
  • SRB Signaling Radio Bearer
  • SRBs are used to carry control message data, and SRBs include SRB0, SRB1, SRB2, and SRB3, where:
  • SRB0 used to transmit RRC signaling.
  • SRB0 uses LCH (Logical Channel, logical channel)
  • CCCH Common Control Channel, common control channel
  • SRB0 has been allocated before the terminal device accesses the network;
  • SRB1 used to transmit RRC signaling or NAS (Non Access Stratum, non-access stratum) signaling, using LCH DCCH (Dedicated Control Channel, dedicated control channel) transmission;
  • SRB2 used to transmit NAS signaling.
  • SRB1 uses LCH DCCH transmission, and the priority of SRB2 is lower than that of SRB1;
  • SRB3 initiates connection establishment in DC (Dual Connectivity) state, and uses LCH DCCH for transmission.
  • the DRB is used to carry user plane data, such as IP data packets.
  • a maximum of 8 DRBs can be established between the terminal device and the network device at the same time.
  • each RB corresponds to an RLC entity and a logical channel through protocol pre-configuration.
  • R15/R16 implements replication and transmission in the IIoT project Function, also known as Packet Duplication.
  • the data transmission function is realized through the PDCP layer.
  • FIG. 3 shows a schematic diagram of copy transmission in the PDCP layer.
  • PDU Packet Data Unit
  • R15 only the sender uses two RLC entities for replication transmission, that is, 2-leg CA scenario and 2-leg DC scenario.
  • the process of using two RLC entities for data replication and transmission is shown as DRB 2 in Figure 3.
  • the terminal device When the terminal device is in the DC state, it can be connected to two cells at the same time.
  • the terminal device uses two RLC entities to transmit the same PDU, and maps the two RLC entities to different MAC entities for transmission.
  • the replication transmission of More Than 2-Leg is introduced, that is, the terminal device supports the replication transmission of 4-Leg CA and CA+DC.
  • the terminal device and the network device also support split (split) transmission.
  • the PDCP entity when the copy transmission is in the deactivated state, if the condition of split transmission is met, the PDCP entity will use Primary Leg (main leg) and Secondary Leg (secondary leg) to transmit PDCP PDU at the same time; if split transmission is not satisfied If the conditions are met, only the Primary leg is used to transmit the PDCP PDU.
  • the sending end device can determine whether to perform split transmission according to the configured relationship between the amount of PDU or RLC data waiting to be transmitted on the two RLC entities and the threshold.
  • FIG. 4 shows a flowchart of a copy transmission method provided by an embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 1 , and the execution body of the method is the first terminal device.
  • the method may include at least one of the following steps (410-420):
  • step 410 the first terminal device acquires configuration information, which is used to configure copy transmission for SL.
  • the configuration information is used to configure the replication transport for the direct communication interface.
  • the direct communication interface is a PC5 interface.
  • the configuration information meets at least one of the following conditions:
  • the configuration information is for the first terminal device and the second terminal device
  • the configuration information is for the sending resource pool used by the first terminal device and/or the second terminal device, the configuration information corresponding to the sending resource pool is shared by multiple terminal devices, or the configuration information corresponding to the sending resource pool is dedicated to the first terminal device and/or the second terminal device;
  • the configuration information is for the receiving resource pool used by the first terminal device and/or the second terminal device, the configuration information corresponding to the receiving resource pool is shared by multiple terminal devices, or the configuration information corresponding to the receiving resource pool is dedicated to the first terminal device and/or the second terminal device;
  • the configuration information is for DRB and/or SRB.
  • the first terminal device is a device with a transceiver function
  • the second terminal device is a device with a transceiver function and capable of performing SL transmission with the first terminal device.
  • the first terminal device and the second terminal device are two different terminal devices.
  • the second terminal device is a certain terminal device, for example, the second terminal device is a specific terminal device that performs SL transmission with the first terminal device.
  • the second terminal device generally refers to at least one terminal device, for example, the second terminal device refers to all terminal devices that can perform SL transmission with the first terminal device.
  • the sending resource pool includes resource information that can be used to send data in SL transmission.
  • the resource information includes but not limited to information such as power, frequency, time slot, and space resource.
  • the first terminal device and/or the second terminal device in an area where network coverage is lost, sends data using configuration information of available resources in the sending resource pool.
  • the first terminal device and/or the second terminal device selects a resource for sending data from the sending resource pool by listening or randomly selecting.
  • the configuration information corresponding to the sending resource pool is shared by multiple terminal devices, and multiple terminal devices can use the same sending resource pool to send data.
  • the configuration information corresponding to the sending resource pool is for certain/certain specific terminal devices, and only the specific terminal device is allowed to use the configuration information corresponding to the sending resource pool to send data.
  • the sending resource pool is pre-configured.
  • the receiving resource pool includes resource information available for receiving data in SL transmission.
  • the resource information includes but not limited to information such as power, frequency, time slot, and space resource.
  • the first terminal device and/or the second terminal device receives data using configuration information of available resources in the receiving resource pool.
  • the first terminal device and/or the second terminal device selects resources for receiving data from the receiving resource pool in a manner of listening or random selection.
  • the configuration information corresponding to the receiving resource pool is shared by multiple terminal devices, and multiple terminal devices can use the same receiving resource pool to receive data.
  • the configuration information corresponding to the sending resource pool is aimed at certain/certain specific terminal devices, and only the specific terminal device is allowed to use the configuration information corresponding to the receiving resource pool to receive data.
  • the receiving resource pool is pre-configured.
  • the configuration information is DRB-specific. In some embodiments, the configuration information is SRB-specific. In some embodiments, the configuration information is specific to the DRB and the SRB, that is, common to the DRB and the SRB. The first terminal device performs data transmission for the DRB and/or the SRB based on the configuration information.
  • the configuration information is specific to a specific DRB. In some embodiments, the configuration information is SRB-specific alone. The first terminal device performs data transmission for a specific DRB and/or a specific SRB based on the configuration information.
  • the configuration information includes at least one of the following: configuration information corresponding to duplication transmission using 2 RLC entities, configuration information corresponding to duplication transmission using more than 2 RLC entities.
  • the configuration information includes the configuration information corresponding to the duplicate transmission using 2 RLC entities
  • the PDCP layer of the first terminal device generates 1 duplicate transmission body and 1 duplicate transmission copy, and sends the generated The duplicate transport body and the duplicate transport copy are transmitted through two different RLC entities.
  • the configuration information includes the configuration information corresponding to the duplicate transmission using 4 RLC entities
  • the PDCP layer of the first terminal device generates 1 duplicate transmission subject and at least 1 duplicate transmission copy, and generates 1 replicated transmission body and at least 1 replicated transmission copy are transmitted using different RLC entities.
  • the first terminal device determines whether to use all 4 RLC entities for duplication transmission based on the configuration information.
  • the first terminal device determines which RLC entities among all 4 RLC entities are used for replication transmission based on the configuration information .
  • the duplication transmission configuration is performed in a pre-configured manner, that is, the configuration information corresponding to the duplication transmission using 2 RLC entities is preconfigured.
  • the configuration information includes at least one of the following: at least one RLC entity identifier or LCH identifier corresponding to the RB, primary path information, indication information indicating whether copy transmission is activated, secondary path information, activated RLC entity identifier, activated RLC entity group identifier and allowed carriers.
  • At least one RLC entity identity or LCH identity corresponding to the RB is used to indicate the RLC entity identity or LCH identity information bearing data.
  • the corresponding RB is one of SRB or DRB.
  • the corresponding RBs are SRBs and DRBs.
  • the indication information of whether copy transmission is activated is used to instruct the first terminal device and/or the second terminal device to determine whether copy transmission can be performed.
  • the activated RLC entity identifier is used to indicate information of an activated RLC entity that can be directly used for SL duplication transmission.
  • the activated RLC entity group identifier is a set of several activated RLC entities, or the activated RLC entity group identifier is a set of at least one activated RLC entity.
  • the primary path information and the secondary path information are used to indicate a path for split transmission.
  • the carrier allowed to be used is used to indicate the carrier information that can be used by the terminal device during the SL copy transmission process or when the SL copy transmission is deactivated.
  • the configuration information includes at least one of the following: an indication allowing the terminal device to activate or deactivate the SL copy transmission, and an enabling flag of the copy transmission.
  • the enable flag of the copy transmission is used to indicate whether the copy transmission can be performed, for example, it is used to indicate whether the first terminal device and/or the second terminal device can perform the copy transmission.
  • the first terminal device may perform SL copy transmission or copy transmission judgment according to the configuration information, or the first terminal device determines the copy transmission information ( Such as which RLC entities are used for replication transmission).
  • the configuration information includes at least one of the following: an identifier of the first terminal device and/or the second terminal device, and an RB identifier.
  • the configuration information may indicate the identity of the terminal device and/or the RB identity corresponding to the duplicate transmission configuration. That is, the mapping relationship between configuration information and terminal devices. Taking the network device configuring and sending the configuration information as an example, in a possible situation, the configuration information may include the identifiers of the first terminal device and the second terminal device, so as to indicate that the configuration information is for the first terminal device and the second terminal device.
  • the configuration information may include the identifier of the first terminal device to indicate that the configuration information is for the first terminal device and other terminal devices (such as
  • the network device sends configuration information to the first terminal device, and the configuration information includes the RB identifier, which indicates that the configuration information is a specific RB ( That is, the RB) indicated by the RB identifier.
  • the network device sends configuration information to the first terminal device, and the configuration information includes the RB identifier, or includes the RB identifier and the identifier of the first terminal device, or includes the RB identifier and the first
  • the identifier of the terminal device and the identifier of the second terminal device indicate that the configuration information is for a specific RB of the first terminal device (that is, the RB indicated by the RB identifier).
  • the configuration information can further be directed to the one-way SL copy transmission from the first terminal device to the second terminal device, or the one-way SL copy transmission from the second terminal device to the first terminal device, or the first terminal device Two-way SL replication transmission between the device and the second terminal device is configured.
  • direction indication information is included in the configuration information, and the direction indication information indicates that the configuration information is for one-way SL copy transmission from the first terminal device to the second terminal device, or the second terminal device sends the first terminal device unidirectional SL copy transmission, or bidirectional SL copy transmission between the first terminal device and the second terminal device.
  • the configuration information includes at least one of the following: an enable flag of split transmission, and a threshold of split transmission.
  • the split transmission enable flag is used to indicate whether the first terminal device and/or the second terminal device can perform split transmission.
  • the split transmission threshold is used to indicate conditions for the first terminal device and/or the second terminal device to perform split transmission.
  • the split transmission threshold includes channel conditions, the amount of data to be transmitted on the RLC entity of the terminal device, and the like.
  • Step 420 the first terminal device performs SL transmission with the second terminal device according to the configuration information.
  • the first terminal device communicates with the second terminal device through the PC5 interface according to the configuration information.
  • the SL copy transmission (or the copy transmission of the PC5 interface) of the terminal device is performed at the PDCP layer.
  • SL transmission refers to direct data transmission between terminal devices through SL, without transferring data through network devices.
  • the first terminal device executes copy transmission for the data according to the acquired configuration information.
  • the first terminal device performs SL transmission with the second terminal device according to configuration information, including at least one of the following:
  • the PDCP of the first terminal device determines at least one of the foregoing contents according to configuration information. For example, the PDCP of the first terminal device determines at least one of the following according to the configuration information: a DRB for performing duplicate transmission, an SRB for performing duplicate transmission, and an RLC entity for performing duplicate transmission.
  • the PDCP pair of the first terminal device sends the data and the data copy to the determined RLC entity that transmits the copied data to the RB performing the copied transmission.
  • each active RLC entity transmits one copy of the replicated transmission of the data.
  • the first terminal device acquires configuration information, the configuration information including replication transmission activation indication information, an RLC entity identifier corresponding to the SRB, an activated RLC entity group identifier, and a replication transmission identifier using two RLC entities.
  • the first terminal device determines to perform copy transmission in SL based on the indication information of copy transmission activation, and determines the RLC entity used to carry the copy transmission main body and copy transmission copy through the RLC entity identifier corresponding to the SRB, and the activated RLC entity group identifier indicates RLC Entity 2, RLC entity 3, RLC entity 9, and RLC entity 14 are in the active state, and the first terminal device selects RLC entity 2 and RLC entity 2 from the activated RLC entity group identifiers based on the duplication transmission identifiers of the two RLC entities in the configuration information. Entity 3 is used for SL copy transport. Based on the foregoing information, the first terminal device uses the RLC entity 2 and the RLC entity 3 to perform SL duplication transmission with the second terminal device.
  • the copy transmission is mainly applicable to unicast (unicast) transmission or a DRB corresponding to unicast, but it is not excluded that it can also be used for multicast or broadcast.
  • SL copy transmission is applicable to CA scenarios, that is, CA copy transmission.
  • the first terminal device determines whether to perform split transmission for SL when determining not to perform copy transmission for SL or deactivate copy transmission for SL or not configure copy transmission for SL; In the case of performing split transfer for SL, data split transfer is performed using the primary path and the secondary path. For example, when the PDCP of the first terminal device determines not to perform duplicate transmission for SL or deactivate duplicate transmission for SL, or configure duplicate transmission for SL, if it further determines to perform split transmission for SL, PDCP uses primary path and secondary path for data split transmission.
  • the first terminal device may determine whether to perform split transmission for SL by itself, or may determine whether to perform split transmission for SL according to an instruction of the network device.
  • the first terminal device executes the single RLC entity transmission when it determines not to perform the duplicate transmission for the SL or the duplicate transmission for the SL is deactivated or the duplicate transmission for the SL is not configured.
  • the first terminal device may determine whether to perform single RLC entity transmission by itself, or may determine whether to perform single RLC entity transmission according to an instruction of the network device.
  • the first terminal device sends auxiliary information to the network device, and the auxiliary information is used by the network device to determine at least one of the following: copy transmission of configured SLs, copy transmission of activated and/or deactivated SLs, determine Activated and/or deactivated RLC entities.
  • the auxiliary information includes but is not limited to at least one of the following: channel quality, bit error rate, QoS (Quality of Service, quality of service) related information, reliability requirements, and the like.
  • the auxiliary information includes but is not limited to at least one of the following: SL duplicate transmission configuration, SL duplicate transmission activation and/or deactivation indication, activated and/or deactivated RLC entity.
  • the auxiliary information is used as reference information for use or configuration of the network device, or the network device directly uses or configures the auxiliary information.
  • the first terminal device further performs at least one of the following steps:
  • At least one of the above-mentioned first activation signaling, first deactivation signaling, second activation signaling, second deactivation signaling, and third activation signaling is configured by a network device or preconfigured.
  • At least one of the above-mentioned first activation signaling, first deactivation signaling, second activation signaling, second deactivation signaling and third activation signaling is configured by the target terminal device
  • the target terminal device is one of the following: the first terminal device, the second terminal device, and another third terminal device other than the first terminal device and the second terminal device.
  • the third terminal device may be a terminal device with a control function.
  • This application provides a copy transmission scheme for SL, which obtains configuration information through the first terminal device and performs SL copy data transmission with the second terminal device according to the configuration information, which helps to improve the reliability of data transmission between terminal devices in SL , to meet more business needs.
  • configuration information is configured or preconfigured by a network device. For example, for SL duplication transmission between terminal devices, corresponding configuration information is indicated to the terminal devices through network device configuration or pre-configuration. The first terminal device and the second terminal device use network device configuration or preconfigured configuration information to perform SL copy transmission.
  • configuration information is configured by a network device.
  • the so-called configuration by the network device means that the configuration information is generated by the network device and sent to the terminal device by the network device, for example, the network device sends the configuration information to the first terminal device and/or the second terminal device.
  • configuration information is pre-configured.
  • pre-configuration means that it can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices), and this application does not limit its specific implementation methods .
  • the pre-configured ones may refer to those defined in the protocol.
  • the "protocol" may refer to a standard protocol in the communication field, for example, may include LTE protocol, NR protocol and related protocols applied in future communication systems, which is not limited in the present application.
  • the network device sends configuration information to the first terminal device and the second terminal device respectively.
  • the configuration information is sent by the network device to the two terminal devices for SL transmission.
  • the network device sends configuration information to the first terminal device and the second terminal device respectively through the Uu interface.
  • the network device may send the configuration information to the terminal device through an RRC message (such as SL-configDedicated, or SL-PDCP-config).
  • the network device sends the configuration information to the first terminal device, and the first terminal device sends the configuration information to the second terminal device; or, the network device sends the configuration information to the second terminal device, and the second terminal device Send the configuration information to the first terminal device.
  • the first terminal device sends the configuration information to the second terminal device through the PC5 interface; or, the second terminal device sends the configuration information to the first terminal device through the PC5 interface.
  • the terminal device that has received the configuration information has enabled SL copy transmission (for example, if the network device sends configuration information to the first terminal device, it means that the first terminal device has enabled SL copy transmission; or , the network device sends configuration information to the second terminal device, which means that the second terminal device has enabled SL copy transmission), or both the first terminal device and the second terminal device have enabled SL copy transmission.
  • the terminal device indicated in the configuration information has enabled SL duplication transmission (for example, the network device sends configuration information to the first terminal device, and the configuration information carries the identifier of the second terminal device, indicating that The second terminal device enables SL copy transmission).
  • the network device sends configuration information to the first terminal device, and the first terminal device does not send the configuration information to the second terminal device; or, the network device sends configuration information to the second terminal device, and the second terminal device The device does not send configuration information to the first terminal device.
  • only the terminal device that has received the configuration information has enabled SL copy transmission (for example, if the network device sends configuration information to the first terminal device, it means that the first terminal device has enabled SL copy transmission; or, the network device Sending the configuration information to the second terminal device indicates that the second terminal device has enabled SL copy transmission).
  • the network device sends the configuration information to the sender in the first terminal device and the second terminal device.
  • the so-called sending end refers to the terminal device that is the sending party when the first terminal device and the second terminal device perform SL communication. For example, if the first terminal device sends data to the second terminal device, then the first terminal device is the sender; if the second terminal device sends data to the first terminal device, then the second terminal device is the sender.
  • the sending end may also be called a sending terminal, a sending UE, a terminal corresponding to the sending entity, and other names, which are not limited in this application.
  • the network device configuration or pre-configured configuration information includes all configuration parameters required to perform SL transmission.
  • the network device configuration or the pre-configured configuration information includes all configuration parameters required for executing the copy transmission of the SL.
  • the terminal device executes the copy and transmission of SL completely according to the configuration information of the network device.
  • the configuration parameters of SL replication transmission between terminal devices are configured through the network device, and the terminal devices perform SL replication transmission according to the parameters configured on the network device, so that the SL replication transmission is controlled by the network as much as possible.
  • the signaling described in the above embodiments is configured or preconfigured by the network device, and the signaling includes the first activation signaling, the first deactivation signaling, the second activation signaling, the second At least one of deactivation signaling and third activation signaling.
  • the network device sends the signaling to the first terminal device and the second terminal device respectively.
  • the network device sends the signaling to the first terminal device, and the first terminal device sends the signaling to the second terminal device; or, the network device sends the signaling to the second terminal device, and the second terminal device sends the signaling to the second terminal device.
  • the second terminal device sends the signaling to the first terminal device.
  • the network device sends the signaling to the first terminal device, and the first terminal device does not send the signaling to the second terminal device; or, the network device sends the signaling to the second terminal device, and The second terminal device does not send the signaling to the first terminal device.
  • the network device sends the signaling to the sending end of the first terminal device and the second terminal device.
  • the sending method of the signaling is similar to the sending method of configuration information.
  • the sending method of configuration information please refer to the introduction about the sending method of configuration information above. Let me repeat.
  • the configuration information configured or pre-configured by the network device includes some configuration parameters required for performing SL transmission, and the first terminal device determines the remaining configuration parameters required for performing SL transmission by itself.
  • the network device configuration or pre-configured configuration information includes some configuration parameters required to perform SL copy transmission, and the first terminal device determines the rest of the configuration parameters required to perform SL copy transmission.
  • the first terminal device receives first indication information from the network device, where the first indication information is used to indicate whether the terminal device is allowed to determine configuration parameters for the copy transmission of the SL by itself.
  • the first indication information may be carried in the configuration information, or may be sent independently of the configuration information. If the first terminal device determines, according to the first indication information, that the network device allows it to determine the configuration parameters of the copy transmission for SL by itself, then the first terminal device may determine some or all of the configuration parameters for the copy transmission of SL by itself, or, The first terminal device may enable network configuration or one of multiple sets of pre-configured configuration parameters.
  • the first terminal device determines, according to the first indication information, that the network device does not allow it to determine the configuration parameters for SL copy transmission by itself, then the first terminal device determines the configuration parameters for SL according to the configured or pre-configured configuration information of the network device. Copying the transmitted configuration parameters, or, the first terminal device may enable network configuration or default configuration parameters in multiple sets of pre-configured configuration parameters.
  • the network device for the duplicate transmission of more than 2 RLC entities, whether to perform the duplicate transmission is configured or pre-configured by the network device, and which RLC entity to use can be determined by the terminal device (such as the sender) by itself.
  • the first terminal device receives second indication information from the network device, where the second indication information is used to indicate whether the terminal device is allowed to determine whether to activate or deactivate the copy transmission for the SL by itself.
  • the second indication information may be carried in the configuration information, or may be sent independently of the configuration information. If the first terminal device determines according to the second indication information that the network device allows the terminal device to determine whether to activate or deactivate the copy transmission for SL, then the first terminal device can activate or deactivate the copy transmission for SL by itself according to the actual transmission requirements. transmission.
  • the first terminal device determines according to the second indication information that the network device does not allow the terminal device to determine to activate or deactivate the copy transmission for SL by itself, then the first terminal device determines to activate the SL according to the activation or deactivation signaling of the network device. Or deactivate the copy transport for SL.
  • the first terminal device may receive the first activation signaling from the network device , the first activation signaling is used to indicate to activate the copy transmission for SL, and the first terminal device determines to activate the copy transmission for SL according to the first activation signaling; or, the first terminal device may receive a copy transmission from the network device A first deactivation signaling, where the first deactivation signaling is used to indicate activation of the duplicate transmission for the SL, and the first terminal device determines to deactivate the duplicate transmission for the SL according to the first deactivation signaling.
  • the first terminal device receives third indication information from the network device, where the third indication information is used to indicate whether the terminal device is allowed to determine by itself whether to activate or deactivate the RLC entity for the duplicate transmission of the SL.
  • the third indication information may be carried in the configuration information, or may be sent independently of the configuration information. If the first terminal device determines, based on the third indication information, that the network device allows the terminal device to determine to activate or deactivate the RLC entity for SL copy transmission, then the first terminal device can activate or deactivate the RLC entity for SL copy transmission by itself according to actual transmission requirements.
  • the RLC entity for the replica transport of the SL is based on the third indication information, that the network device allows the terminal device to determine to activate or deactivate the RLC entity for SL copy transmission.
  • the first terminal device determines, according to the third indication information, that the network device does not allow the terminal device to independently determine to activate or deactivate the RLC entity for SL copy transmission, then the first terminal device, according to the activation or deactivation signaling of the network device, to determine the RLC entity to activate or deactivate the copy transmission for SL.
  • the first terminal device may receive the second Activation signaling, where the second activation signaling is used to indicate activation of the RLC entity used for SL copy transmission, and the first terminal device determines to activate the RLC entity used for SL copy transmission according to the second activation signaling;
  • the first terminal device may receive a second deactivation signaling from the network device, where the second deactivation signaling is used to instruct deactivation of the RLC entity used for SL copy transmission, and the first terminal device may receive the second deactivation signaling according to the second deactivation signaling. 2.
  • Deactivation signaling determining to deactivate the RLC entity used for the copy transmission of the SL.
  • first indication information, second indication information and third indication information may be sent separately, or two or three of them may be sent simultaneously, which is not limited in this application.
  • the configuration parameters of SL replication transmission are jointly determined by network devices and terminal devices. Compared with configuring all configuration parameters of SL replication transmission by network devices, the signaling overhead and processing overhead on the network side can be reduced, but terminal devices are required to participate in the setting of some parameters. It is determined that the complexity of the terminal device is relatively increased.
  • the configuration information is configured by a target terminal device, and the target terminal device is one of the following: a first terminal device, a second terminal device, a second terminal device other than the first terminal device and the second terminal device Three terminal equipment.
  • the aforementioned third terminal device may be a terminal device with a control function.
  • the configuration information is sent to the first terminal device and/or the second terminal device through a direct communication interface.
  • the direct communication interface is a PC5 interface.
  • the third terminal device configures the configuration information, and the third terminal device sends the configuration information to the first terminal device through the direct communication interface.
  • the terminal device and the second terminal device in another possible situation, the first terminal device configures the configuration information, and the first terminal device sends the configuration information to the second terminal device through a direct communication interface; in another If possible, the second terminal device configures the configuration information, and the second terminal device sends the configuration information to the second terminal device through the direct communication interface.
  • the configuration information may not be sent to the peer device (that is, the receiving end). In some embodiments, the configuration information is sent to the sending end in the first terminal device and the second terminal device through the direct communication interface.
  • the direct communication interface is a PC5 interface.
  • the third terminal device configures the configuration information, and the third terminal device sends the configuration information to the first terminal device through the direct communication interface.
  • the sending end in the terminal device and the second terminal device (for example, the first terminal device is used as the sending end, then the third terminal device sends the configuration information to the first terminal device through the direct communication interface; and for example, the second terminal device is used as the sending end end, then the third terminal device sends the configuration information to the second terminal device through the direct communication interface); in another possible situation, the first terminal device acts as the receiving end, the second terminal device acts as the sending end, and the second A terminal device configures the configuration information, and the first terminal device sends the configuration information to the second terminal device through a direct connection communication interface; in another possible situation, the second terminal device acts as the receiving end, and the first terminal device acts as the At the sending end, the second terminal device configures the configuration information, and the second terminal device sends the configuration information to the second terminal device through the direct connection communication interface. In some other embodiments, if the first terminal device or the second terminal device is used as the sending end to configure the configuration information, the configuration information may not be sent to the peer device (that is, the receiving end).
  • the configuration information is forwarded to the sender in the first terminal device and the second terminal device through the direct communication interface.
  • the first terminal device as the sending end as an example, assuming that there is no interface between the network device or the terminal device with the control function and the first terminal device, and cannot communicate directly, then the network device or the terminal device with the control function
  • the configuration information can be sent to a terminal device (such as a third terminal device, or a second terminal device) that has an interface (that is, can communicate directly) with the first terminal device, and the terminal device forwards the configuration information through the direct communication interface to the first terminal device.
  • the network device or the terminal device with the control function sends the configuration information to the terminal device that has an interface (that is, can communicate directly) with the first terminal device, it may carry the identifier of the first terminal device at the same time.
  • the configuration information is sent to the first terminal device and/or the second terminal device through the network device.
  • the third terminal device configures the configuration information, and the third terminal device sends the configuration information to the first terminal device through the network device and the second terminal device; in another possible situation, the first terminal device configures the configuration information, and the first terminal device sends the configuration information to the second terminal device through the network device; in another possible situation , the second terminal device configures the configuration information, and the second terminal device sends the configuration information to the second terminal device through the network device.
  • the configuration information may not be sent to the peer device (that is, the receiving end).
  • the configuration information is sent to the sending end of the first terminal device and the second terminal device through the network device.
  • the third terminal device configures the configuration information, and the third terminal device sends the configuration information to the first terminal device through the network device and the sending end in the second terminal device (for example, the first terminal device is used as the sending end, then the third terminal device sends the configuration information to the first terminal device through the network device; and for example, the second terminal device is used as the sending end, then the third terminal device
  • the third terminal device sends the configuration information to the second terminal device through the network device); in another possible situation, the first terminal device acts as the receiving end, the second terminal device acts as the sending end, and the first terminal device configures the configuration information Information, the first terminal device sends configuration information to the second terminal device through the network device; in another possible situation, the second terminal device acts as the receiving end, the first terminal device acts as the sending end, and the second terminal device configures
  • the signaling configuration overhead and processing overhead on the network side can be minimized, but the terminal behavior is not controlled by the network to a certain extent.
  • the signaling described in the above embodiments is configured by the target terminal device, and the signaling includes a first activation signaling, a first deactivation signaling, a second activation signaling, a second deactivation signaling at least one of signaling and third activation signaling.
  • the signaling is sent to the first terminal device and/or the second terminal device through a direct communication interface.
  • the signaling is sent to the sending end in the first terminal device and the second terminal device through a direct communication interface.
  • the signaling is sent to the first terminal device and/or the second terminal device through the network device.
  • the signaling is sent to the sending end of the first terminal device and the second terminal device through the network device.
  • the sending method of the signaling is similar to the sending method of the configuration information.
  • the sending method of the configuration information please refer to the introduction about the sending method of the configuration information above, and will not repeat it here .
  • the copy transmission configuration is indicated to the UE through network pre-configuration or configuration, and UE1 and UE2 use the network pre-configured or configured copy transmission parameters to perform the copy transmission operation.
  • Copy transmission is mainly applicable to unicast (unicast) transmission or DRB corresponding to unicast, but it does not exclude the use of multicast or broadcast.
  • pre-configure or configure duplicate transmission configurations for UE1 and UE2 through the network Pre-configure or configure duplicate transmission configurations for UE1 and UE2 through the network. Specifically include at least one of the following:
  • the duplicate transmission configuration is for between UE1 and UE2.
  • the copy transmission configuration is for DRB and/or SRB.
  • the replication transmission configuration includes at least one of the following: moreThanOneRLC, moreThanTwoRLC-DRB.
  • the duplicate transmission configuration includes at least one of the following: at least one RLC/LCH identifier corresponding to the RB, primary path information (the cell group to which the primary path belongs, and/or, the logical channel identifier corresponding to the primary path), DataSplitThreshold, Whether the duplicate transmission is activated, secondary path information (the cell group to which the secondary path belongs, and/or the logical channel identifier corresponding to the secondary path), the activated RLC entity identifier, and allowed carriers (different paths can use different carriers).
  • the network simultaneously indicates the UE identity corresponding to the duplicate transmission configuration, that is, the mapping relationship between the duplicate transmission parameters and UE-UE, and/or, the RB logo.
  • configuration may be performed for UE1 ⁇ UE2, or UE2 ⁇ UE1, or UE1-UE2.
  • the UE receives a duplicate transmission pre-configuration or configuration from the network. specific:
  • Case 1 The copy transmission pre-configuration or configuration in the above 1 is indicated by the network to the two related UEs respectively, such as configuring UE1 and UE2 through RRC messages (such as SL-configDedicated, or SL-PDCP-config) between gNBs .
  • RRC messages such as SL-configDedicated, or SL-PDCP-config
  • Case 2 The copy transmission preconfiguration or configuration in the above 1 is indicated by the network to one of the UEs (such as through the Uu interface), and the UE communicates to another UE (such as through the PC5 interface).
  • the base station indicates to one of the UEs, for example as follows:
  • the base station instructs the UE corresponding to the sending entity of the copy transmission, or the originating UE.
  • Case 3 The copy transmission pre-configuration or configuration in the above 1 is indicated by the network to one of the UEs (eg through the Uu interface). For example as follows:
  • the base station instructs the UE corresponding to the sending entity of the copy transmission, or the originating UE.
  • UE1 and UE2 transmit through the PC5 interface. Assuming that data is sent from UE1 to UE2, UE1 performs copy transmission according to the received copy transmission configuration of SL UE1-UE2. include:
  • the PDCP of UE1 performs duplication transmission judgment, and/or, determines which RLC entities to send data and data duplication to.
  • the UE may report auxiliary information to the base station for the base station to determine activated/deactivated RLC.
  • the 2-leg copy transmission may also be a copy transmission configuration pre-configured by the network.
  • the UE obtains the copy transmission configuration through the way that the network configures the copy transmission parameters between UE and UE, and how to perform the copy transmission operation according to the copy transmission parameters configured by the network.
  • This solution makes the UE-UE copy transmission controlled by the network instruction as much as possible.
  • copy transmission for copy transmission between UEs, whether to use the copy transmission configuration is indicated to the UE through network pre-configuration or configuration.
  • the specific path resources used are determined by the UE (such as the originating UE), and UE1 correspondingly implements replication transmission with UE2.
  • Copy transmission is mainly applicable to unicast (unicast) transmission or DRB corresponding to unicast, but it does not exclude the use of multicast or broadcast.
  • pre-configure or configure duplicate transmission configurations for UE1 and UE2 through the network Pre-configure or configure duplicate transmission configurations for UE1 and UE2 through the network. Specifically include at least one of the following:
  • the copy transmission configuration is for between UE1 and UE2, or for TX pool (transmission resource pool).
  • the copy transmission configuration is for DRB and/or SRB.
  • the duplication transmission configuration includes at least one of the following: 2-leg duplication or up to 4-leg duplication.
  • the duplicate transmission configuration includes at least one of the following: DataSplitThreshold, whether the duplicate transmission is activated, main path information (the cell group to which the main path belongs, and/or, the logical channel identifier corresponding to the main path), and at least one of the corresponding RBs RLC/LCH identifier, allowed carriers (different paths can use different carriers).
  • the network simultaneously indicates the UE identity corresponding to the duplicate transmission configuration, that is, the mapping relationship between the duplication parameter and UE-UE, and/or the RB identity .
  • configuration may be performed for UE1 ⁇ UE2, or UE2 ⁇ UE1, or UE1-UE2.
  • the network indicates whether the UE can determine the duplicate transmission configuration.
  • the UE receives a duplicate transmission pre-configuration or configuration from the network. specific:
  • Case 1 The copy transmission pre-configuration or configuration in the above 1 is indicated by the network to the two related UEs respectively, such as configuring UE1 and UE2 through RRC messages (such as SL-configDedicated, or SL-PDCP-config) between gNBs .
  • RRC messages such as SL-configDedicated, or SL-PDCP-config
  • Case 2 The copy transmission preconfiguration or configuration in the above 1 is indicated by the network to one of the UEs (such as through the Uu interface), and the UE communicates to another UE (such as through the PC5 interface).
  • the base station indicates to one of the UEs, for example as follows:
  • the base station instructs the UE corresponding to the sending entity of the copy transmission, or the originating UE.
  • Case 3 The duplicate transmission configuration in the above 1 is indicated by the network to one of the UEs (for example, through the Uu interface). For example as follows:
  • the base station instructs the UE corresponding to the sending entity of the copy transmission, or the originating UE.
  • UE1 and UE2 transmit through the PC5 interface. Assuming that data is sent from UE1 to UE2, UE1 performs copy transmission according to the received copy transmission configuration of SL UE1-UE2. include:
  • the PDCP of UE1 determines whether to perform duplicate transmission according to the duplicate transmission configuration information of the base station, or determines whether to perform duplicate transmission for the DRB/SRB.
  • the UE1 PDCP determines at least one of the following: the identity of the DRB performing the copy transmission, the identity of the SRB performing the copy transmission, and the identity of the RLC entity performing the copy transmission.
  • UE1 PDCP sends data and a copy of the data to the determined RLC entity that transmits the replicated data to the RB performing the replicated transmission.
  • UE1 PDCP performs single RLC entity transmission under the condition that it is determined not to perform duplicate transmission according to the network instruction. Or, UE1 PDCP determines whether to perform split transmission according to network configuration information (such as split threshold) when determining not to perform duplicate transmission according to the network instruction. In the case of split transfer execution, a primary path and/or a secondary path are determined, and data split transmission is performed using the primary path and the secondary path.
  • network configuration information such as split threshold
  • the UE may report auxiliary information to the base station for the base station to determine activated/deactivated RLC.
  • 2-leg copy transfer it may also be a copy transfer configuration pre-configured by the network.
  • the UE and the network jointly determine information for duplicate transmission, so as to implement UE-UE duplicate transmission.
  • the network signaling configuration is reduced, but the UE is required to participate in the determination of partial replication transmission parameters, and the complexity of the UE is high.
  • the UE determines whether to perform the copy transmission and the configuration information of the copy transmission, and UE1 and UE2 use the copy transmission configuration determined by the UE to perform the copy transmission operation.
  • Copy transmission is mainly applicable to unicast (unicast) transmission or DRB corresponding to unicast, but it does not exclude the use of multicast or broadcast.
  • the UE configures the duplication transmission configuration for UE1 and UE2, or is determined by the UE. Specifically include at least one of the following:
  • the copy transmission configuration is for between UE1 and UE2, or for TX pool (for TX pool between UE and all possible UEs).
  • the copy transmission configuration is for DRB and/or SRB.
  • the duplication transmission configuration includes at least one of the following: 2-leg duplication or up to 4-leg duplication.
  • the copy transmission configuration includes at least one of the following: at least one RLC/LCH identifier corresponding to the RB, DataSplitThreshold, whether copy transmission is activated, main path information (the cell group to which the main path belongs, and/or, the corresponding logical channel identifier), DataSplitThreshold, whether to activate duplicate transmission, secondary path information (the cell group to which the secondary path belongs, and/or, the logical channel identifier corresponding to the secondary path), activated RLC entity identifier, allowed carrier (different different carrier used).
  • the configuration of the duplicate transmission is aimed at between UE1 and UE2, when sending the configuration, at the same time indicate the UE identity corresponding to the duplicate transmission configuration, that is, the duplicate transmission parameter and the UE-UE The mapping relationship, and/or, the RB identifier.
  • configuration may be performed for UE1 ⁇ UE2, or UE2 ⁇ UE1, or UE1-UE2.
  • the network indicates whether the UE can determine the duplication configuration.
  • the UE-UE copy transmission configuration is sent by the UE.
  • the duplicate transmission configuration needs to be sent to the peer UE. Specifically include at least one of the following:
  • Case 1 The replication transmission configuration in the above 1 is directly indicated by the UE to the peer UE (for example, through the PC5 interface).
  • Case 2 The copy transmission configuration in the above 1 is indicated by the UE to the peer UE through the network (for example, through the Uu interface).
  • UE1 and UE2 transmit through the PC5 interface. Assuming that data is sent from UE1 to UE2, UE1 determines whether to perform duplicate transmission, and/or perform duplicate transmission/non-duplicate transmission according to step 1 and/or step 2.
  • UE-UE duplication transmission is determined and executed by UE itself.
  • the network configuration is omitted, but the UE behavior is not controlled by the network to a certain extent.
  • FIG. 5 shows a block diagram of an SL-specific copy transmission device provided by an embodiment of the present application.
  • the apparatus has the function of realizing the above-mentioned method example on the side of the first terminal device, and this function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the apparatus may be the first terminal device described above, or may be set in the first terminal device.
  • the apparatus 500 may include: an acquisition module 510 and a transmission module 520 .
  • An obtaining module 510 configured to obtain configuration information, where the configuration information is used to configure copy transmission for SL;
  • the transmission module 520 is configured to perform SL transmission with the second terminal device according to the configuration information.
  • the configuration information meets at least one of the following conditions:
  • the configuration information is for the first terminal device and/or the second terminal device
  • the configuration information is for the sending resource pool used by the first terminal device and/or the second terminal device, and the configuration information corresponding to the sending resource pool is shared by multiple terminal devices, or, the The configuration information corresponding to the sending resource pool is dedicated to the first terminal device and/or the second terminal device;
  • the configuration information is for the receiving resource pool used by the first terminal device and/or the second terminal device, and the configuration information corresponding to the receiving resource pool is shared by multiple terminal devices, or, the receiving configuration information corresponding to the resource pool is dedicated to the first terminal device and/or the second terminal device;
  • the configuration information is for a data radio bearer DRB and/or a signaling radio bearer SRB.
  • the configuration information includes at least one of the following: configuration information corresponding to duplicate transmission using 2 radio link control RLC entities, configuration information corresponding to duplicate transmission using more than 2 RLC entities.
  • the configuration information includes at least one of the following: at least one RLC entity identifier or logical channel LCH identifier corresponding to the radio bearer RB, primary path information, indication information indicating whether copy transmission is activated, secondary path information, activated The RLC entity identifier, the activated RLC entity group identifier, and the carriers allowed to be used.
  • the configuration information includes at least one of the following: an identifier of the first terminal device and/or the second terminal device, and an RB identifier.
  • the configuration information includes at least one of the following: an enable flag of split transmission, and a threshold of split transmission.
  • the transmission module 520 is configured to perform at least one of the following:
  • At least one of the following is determined: a DRB performing copy transmission, an SRB performing copy transmission, an RLC entity performing copy transmission, an activated RLC entity, an RLC entity group performing copy transmission, an activated RLC entity group, The number of copies to perform copy transfer;
  • the data in the copy transmission and the RLC entities to which the data copies are respectively sent are determined.
  • the transmission module 520 is further configured to determine whether to perform splitting for the SL when it is determined not to perform the copy transmission for the SL or to deactivate the copy transmission for the SL or not configure the copy transmission for the SL Transmission: in the case of determining to perform split transmission for SL, use the primary path and the secondary path to perform data split transmission.
  • the transmission module 520 is further configured to perform single RLC entity transmission when it is determined not to perform the duplicate transmission for the SL or to deactivate the duplicate transmission for the SL, or if the duplicate transmission for the SL is not configured.
  • the transmission module 520 is further configured to send auxiliary information to the network device, where the auxiliary information is used by the network device to determine at least one of the following: copy transmission, activation and/or deactivation of the configured SL RLC entity for the replication transmission, activation and/or deactivation of the SL.
  • the configuration information is configured or pre-configured by a network device.
  • the network device sends the configuration information to the first terminal device and the second terminal device respectively; or, the network device sends the configuration information to the first terminal device, and the first terminal device sends the configuration information to the second terminal device; or, the network device sends the configuration information to the second terminal device, and the second terminal device sends the configuration information to the second terminal device Send the configuration information to the first terminal device; or, the network device sends the configuration information to the first terminal device, and the first terminal device does not send the configuration information to the second terminal device device; or, the network device sends the configuration information to the second terminal device, and the second terminal device does not send the configuration information to the first terminal device; or, the network device sends the configuration information to the first terminal device The sending end in the first terminal device and the second terminal device sends the configuration information.
  • the configuration information is configured by a target terminal device, and the target terminal device is one of the following: the first terminal device, the second terminal device, the first terminal device, and the Another third terminal device other than the second terminal device mentioned above.
  • the configuration information is sent to the first terminal device and/or the second terminal device through a direct communication interface; or, the configuration information is sent to the first terminal device through a direct communication interface.
  • the configuration information includes all configuration parameters required to perform the SL transmission; or, the configuration information includes some configuration parameters required to perform the SL transmission, and the first terminal device automatically The remainder of the configuration parameters required to perform the SL transmission are determined.
  • the transmission module 520 is also configured to perform at least one of the following:
  • the second indication information is used to indicate whether to allow the terminal device to determine whether to activate or deactivate the copy transmission for the SL;
  • the acquiring module 510 is also configured to perform at least one of the following:
  • the signaling is configured or preconfigured by a network device, and the signaling includes the first activation signaling, the first deactivation signaling, the second activation signaling, At least one of the second deactivation signaling and the third activation signaling.
  • the network device sends the signaling to the first terminal device and the second terminal device respectively;
  • the network device sends the signaling to the first terminal device, and the first terminal device sends the signaling to the second terminal device; or, the network device sends the signaling to the second terminal device
  • the device sends the signaling, and the second terminal device sends the signaling to the first terminal device
  • the network device sends the signaling to the first terminal device, and the first terminal device does not send the signaling to the second terminal device; or, the network device sends the signaling to the second terminal device
  • the terminal device sends the signaling, and the second terminal device does not send the signaling to the first terminal device
  • the network device sends the signaling to a sending end in the first terminal device and the second terminal device.
  • the signaling is configured by the target terminal device, and the signaling includes the first activation signaling, the first deactivation signaling, the second activation signaling, the At least one of the second deactivation signaling and the third activation signaling, the target terminal device is one of the following: the first terminal device, the second terminal device, or the first terminal device and another third terminal device other than the second terminal device.
  • the signaling is sent to the first terminal device and/or the second terminal device through a direct communication interface
  • the signaling is sent to a sending end in the first terminal device and the second terminal device through a direct communication interface;
  • the signaling is sent to a sending end in the first terminal device and the second terminal device through the network device.
  • FIG. 6 shows a block diagram of an SL copy transmission device provided by another embodiment of the present application.
  • the apparatus has the function of realizing the above-mentioned method example on the network device side, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the apparatus may be the network device described above, or may be set in the network device.
  • the apparatus 600 may include: a sending module 610 .
  • the sending module 610 is configured to send configuration information to at least one terminal device, where the configuration information is used to configure copy transmission for SL.
  • the configuration information meets at least one of the following conditions:
  • the configuration information is for the first terminal device and/or the second terminal device
  • the configuration information is for the sending resource pool used by the first terminal device and/or the second terminal device, the configuration information corresponding to the sending resource pool is shared by multiple terminal devices, or the sending resource pool corresponds to The configuration information is specific to the first terminal device and/or the second terminal device;
  • the configuration information is for the receiving resource pool used by the first terminal device and/or the second terminal device, and the configuration information corresponding to the receiving resource pool is shared by multiple terminal devices, or, the receiving configuration information corresponding to the resource pool is dedicated to the first terminal device and/or the second terminal device;
  • the configuration information is for a data radio bearer DRB and/or a signaling radio bearer SRB.
  • the configuration information includes at least one of the following: configuration information corresponding to duplicate transmission using 2 radio link control RLC entities, configuration information corresponding to duplicate transmission using more than 2 RLC entities.
  • the configuration information includes at least one of the following: at least one RLC entity identifier or logical channel LCH identifier corresponding to the radio bearer RB, primary path information, indication information indicating whether copy transmission is activated, secondary path information, activated The RLC entity identifier, the activated RLC entity group identifier, and the carriers allowed to be used.
  • the configuration information includes at least one of the following: an identifier of the first terminal device and/or the second terminal device, and an RB identifier.
  • the configuration information includes at least one of the following: an enable flag of split transmission, and a threshold of split transmission.
  • the configuration information is used to determine at least one of the following:
  • the DRB that performs the replication transfer
  • the RLC entity to which the data in the copy transfer and the copy of the data are respectively sent.
  • the sending module 610 is used for:
  • the first terminal device and the second terminal device are a group of terminal devices performing SL transmission.
  • the sending module 610 is further configured to perform at least one of the following:
  • the terminal device Sending third indication information to the terminal device, where the third indication information is used to indicate whether the terminal device is allowed to determine by itself whether to activate or deactivate the RLC entity for the duplicate transmission of the SL.
  • the device 600 also includes:
  • a receiving module configured to receive auxiliary information sent by the terminal device
  • the determining module is configured to perform at least one of the following according to the auxiliary information: determine the duplicate transmission of the configured SL, determine the duplicate transmission of the activated and/or deactivated SL, determine the activated and/or deactivated RLC entity.
  • the configuration information includes all configuration parameters required to perform SL transmission; or, the configuration information includes some configuration parameters required to perform SL transmission, and the terminal device determines by itself what is required to perform SL transmission The rest of the configuration parameters.
  • the sending module 610 is further configured to send signaling to the at least one terminal device, where the signaling includes at least one of the following:
  • the first activation signaling is used to indicate activation of copy transmission for SL;
  • the first deactivation signaling is used to instruct to deactivate the copy transmission for SL;
  • the second activation signaling is used to indicate activation of the RLC entity used for the copy transmission of the SL;
  • the second deactivation signaling is used to instruct deactivation of the RLC entity used for the copy transmission of the SL;
  • the third activation signaling is used for instructing to activate or use the RLC entity used for the split transmission, or to indicate to activate or use the split transmission.
  • the sending module 610 is used for:
  • the first terminal device and the second terminal device are a group of terminal devices performing SL transmission.
  • FIG. 7 shows a structural block diagram of a terminal device 70 provided by an embodiment of the present application.
  • the terminal device 70 can be used to execute the above-mentioned copy transmission method for SL on the terminal device side.
  • the terminal device 70 may include: a processor 71 , a receiver 72 , a transmitter 73 , a memory 74 and a bus 75 .
  • the processor 71 includes one or more processing cores, and the processor 71 executes various functional applications and information processing by running software programs and modules.
  • the receiver 72 and the transmitter 73 can be realized as a transceiver 76, and the transceiver 76 can be a communication chip.
  • the memory 74 is connected to the processor 71 through the bus 75 .
  • the memory 74 may be used to store a computer program, and the processor 71 is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.
  • memory 74 can be realized by any type of volatile or nonvolatile storage device or their combination, and volatile or nonvolatile storage device includes but not limited to: RAM (Random-Access Memory, random access memory) And ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disks storage or other magnetic storage devices.
  • RAM Random-Access Memory, random access memory
  • ROM Read-Only Memory, read-only memory
  • EPROM Erasable Programmable Read-Only Memory, erasable programmable read-only memory
  • EEPROM Electrically Eras
  • the processor 71 is configured to acquire configuration information, where the configuration information is used to configure copy transmission for SL; perform SL transmission with the second terminal device according to the configuration information.
  • FIG. 8 shows a structural block diagram of a network device 80 provided by an embodiment of the present application.
  • the network device 80 may be used to execute the above-mentioned copy transmission method for SL on the network device side.
  • the network device 80 may include: a processor 81 , a receiver 82 , a transmitter 83 , a memory 84 and a bus 85 .
  • the processor 81 includes one or more processing cores, and the processor 81 executes various functional applications and information processing by running software programs and modules.
  • the receiver 82 and the transmitter 83 can be realized as a transceiver 86, and the transceiver 86 can be a communication chip.
  • the memory 84 is connected to the processor 81 through the bus 85 .
  • the memory 84 may be used to store a computer program, and the processor 81 is used to execute the computer program, so as to implement various steps performed by the network device in the foregoing method embodiments.
  • memory 84 can be realized by any type of volatile or nonvolatile storage device or their combination, and volatile or nonvolatile storage device includes but not limited to: RAM (Random-Access Memory, random access memory) And ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disks storage or other magnetic storage devices.
  • RAM Random-Access Memory, random access memory
  • ROM Read-Only Memory, read-only memory
  • EPROM Erasable Programmable Read-Only Memory, erasable programmable read-only memory
  • EEPROM Electrically Eras
  • the transceiver 86 is configured to send configuration information to at least one terminal device, the configuration information being used to configure the copy transmission for SL.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device or a network device, so as to realize the above-mentioned copy transmission for SL method.
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • the embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a terminal device or a network device, it is used to implement the above-mentioned copy transmission method for SL.
  • the embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the terminal device or network device obtains from The computer-readable storage medium reads and executes the computer instructions, so as to realize the above-mentioned copy transmission method for SL.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • the numbering of the steps described herein only exemplarily shows a possible order of execution among the steps, and in some other embodiments, the above steps may not be executed in accordance with the order of the numbers, such as two different numbered The steps are executed at the same time, or two steps with different numbers are executed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

一种针对SL的复制传输方法、装置、设备及存储介质，属于通信技术领域。所述方法包括：第一终端设备获取配置信息，该配置信息用于配置针对SL的复制传输（410）；第一终端设备根据该配置信息，与第二终端设备进行SL传输（420）。上述方法通过第一终端设备获取配置信息并根据配置信息与第二终端设备进行SL复制数据传输，有助于提升SL中终端设备间数据传输的可靠性，以满足更多的业务需求。

Description

针对SL的复制传输方法、装置、设备及存储介质 技术领域
本申请实施例涉及通信技术领域，特别涉及一种针对SL(Sidelink，侧行链路)的复制传输方法、装置、设备及存储介质。
背景技术
IIoT(Industrial Interest of Things，工业互联网)与TSN(Time Sensitive Network，时间敏感性网络)业务对SL上的数据传输提出了高可靠低时延的传输需求，目前针对SL上终端设备之间的数据传输方法还需要进一步讨论。
发明内容
本申请实施例提供了一种针对SL的复制传输方法、装置、设备及存储介质。所述技术方案如下：
根据本申请实施例的一个方面，提供了一种针对SL的复制传输方法，所述方法由第一终端设备执行，所述方法包括：
获取配置信息，所述配置信息用于配置针对SL的复制传输；
根据所述配置信息，与第二终端设备进行SL传输。
根据本申请实施例的一个方面，提供了一种针对SL的复制传输方法，所述方法由网络设备执行，所述方法包括：
向至少一个终端设备发送配置信息，所述配置信息用于配置针对SL的复制传输。
根据本申请实施例的一个方面，提供了一种针对SL的复制传输装置，所述装置包括：
获取模块，用于获取配置信息，所述配置信息用于配置针对SL的复制传输；
传输模块，用于根据所述配置信息，与第二终端设备进行SL传输。
根据本申请实施例的一个方面，提供了一种针对SL的复制传输装置，所述装置包括：
发送模块，用于向至少一个终端设备发送配置信息，所述配置信息用于配置针对SL的复制传输。
本申请实施例提供的技术方案可以包括如下有益效果：
本申请提供了一种针对SL的复制传输方案，通过第一终端设备获取配置信息并根据配置信息与第二终端设备进行SL复制数据传输，有助于提升SL中终端设备间数据传输的可靠性，以满足更多的业务需求。
附图说明
图1是本申请一个实施例提供的网络架构的示意图；
图2示例性示出了终端设备各个协议层实体间的对应关系的示意图；
图3示例性示出了PDCP层中进行复制传输的示意图；
图4是本申请一个实施例提供的针对SL的复制传输方法的流程图；
图5是本申请一个实施例提供的针对SL的复制传输装置的框图；
图6是本申请一个实施例提供的针对SL的复制传输装置的框图；
图7是本申请一个实施例提供的终端设备的结构示意图；
图8是本申请一个实施例提供的网络设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
本申请实施例描述的网络架构以及业务场景是为了更加清楚地说明本申请实施例的技术方案，并不构成对本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution， LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、非地面通信网络(Non-Terrestrial Networks，NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、第五代通信(5th-Generation，5G)系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)通信等，本申请实施例也可以应用于这些通信系统。
本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
本申请实施例中的通信系统可以应用于非授权频谱，其中，非授权频谱也可以认为是共享频谱；或者，本申请实施例中的通信系统也可以应用于授权频谱，其中，授权频谱也可以认为是非共享频谱。
本申请实施例可应用于非地面通信网络(Non-Terrestrial Networks，NTN)系统，也可应用于地面通信网络(Terrestrial Networks，TN)系统。
请参考图1，其示出了本申请一个实施例提供的网络架构的示意图。该网络架构可以包括：核心网11、接入网12和终端设备13。
核心网11中包括若干核心网设备。核心网设备的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。例如，5G(5th Generation，第五代移动通信技术)NR(New Radio，新空口)系统的核心网中可以包括AMF(Access and Mobility Management Function，接入和移动性管理功能)实体、UPF(User Plane Function，用户平面功能)实体和SMF(Session Management Function，会话管理功能)实体等设备。
接入网12中包括若干接入网设备14。5G NR系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。接入网设备14是一种部署在接入网12中用以为终端设备13提供无线通信功能的装置。接入网设备14可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备接入网设备功能的设备的名称可能会有所不同，例如在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“接入网设备”这一名称可能会变化。为方便描述，本申请实施例中，上述为终端设备13提供无线通信功能的装置统称为接入网设备。
终端设备13的数量通常为多个，每一个接入网设备14所管理的小区内可以分布一个或多个终端设备13。终端设备13可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备、移动台(Mobile Station，MS)等等。为方便描述，上面提到的设备统称为终端设备。接入网设备14与核心网设备之间通过某种空中技术相互通信，例如5G NR系统中的NG接口。接入网设备14与终端设备13之间通过某种空中技术互相通信，例如Uu接口。
终端设备13和终端设备13(例如车载设备与其它设备(如其它车载设备、手机、RSU(Road Side Unit，路侧单元)等)之间可以通过直连通信接口(如PC5接口(ProSe Communication 5，近邻通信第五接口))互相通信，相应地，该基于直连通信接口建立的通信链路可以称为直连链路或SL。SL传输即为终端设备与终端设备之间通过侧行链路直接进行通信数据传输，不同于传统的蜂窝系统中通信数据通过接入网设备接收或者发送，SL传输具有时延短、开销小等特点，适合用于地理位置接近的两个终端设备(如车载设备和地理位置接近的其它周边设备)之间的通信。
本申请实施例中的“5G NR系统”也可以称为5G系统或者NR系统，但本领域技术人员可以理解其含义。本申请实施例描述的技术方案可以适用于LTE系统，也可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统，还可以适用于诸如NB-IoT(Narrow Band Internet of Things，窄带物联网)系统等其他通信系统，本申请对此不作限定。
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的载波上的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)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。
本申请实施例中的UE与终端设备表达同一含义，两者可以相互替换；网络设备与接入网设备、基站表达同一含义，三者可以相互替换。
在介绍本申请技术方案之前，先对本申请涉及的一些背景技术知识进行介绍说明。以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
首先，对PDCP(Packet Data Convergence Protocol，分组数据汇聚协议)层进行介绍。
NR协议栈可分为控制面部分与用户面部分，控制面协议栈从底层到顶层分别为空口体系和IP(Internet Protocol，互联网协议)体系，空口体系从下到上依次包括PHY(Physical，物理)层、MAC(Medium Access Control，媒体接入控制)层、RLC(Radio Link Control、无线链路控制)层和PDCP层，IP体系包括RRC(Radio Resource Control，无线资源控制)层。
由此可见，PDCP层是无线层与高层之间的分界层，PDCP层的主要功能包括：IP数据分组与报头压缩、用户数据加密、控制数据加密、保护数据完整性和重传排序/复制发送。
下面将结合图2对RRC、RB(Radio Bearer，无线承载)和RLC实体间的关系进行介绍。
请参考图2，其示出了终端设备各个协议层实体间的对应关系。
PDCP层由多个PDCP实体组成，每一个PDCP实体可以对应处理一个RB。发送端基于上层的请求建立PDCP实体与RB之间的对应关系。
RRC是用于管理RB的协议实体，发送方和接收方通过RRC信令完成RB的建立、修改和释放。RB是Uu接口连接发送方与接收方的通道。在PHY层、MAC层、RLC层和PDCP层等协议层中，任何通过Uu接口传输的数据都要经过RB。
RB包括DRB(Data Radio Bearer，数据无线承载)和SRB(Signalling Radio Bearer，信令无线承载)两类。
SRB用于承载控制消息数据，SRB包括SRB0、SRB1、SRB2和SRB3，其中：
(1)SRB0，用于传输RRC信令。SRB0使用LCH(Logical Channel，逻辑信道)CCCH(Common Control Channel，公共控制信道)传输RRC信令，SRB0在终端设备接入网络前已经分配完成；
(2)SRB1，用于传输RRC信令或NAS(Non Access Stratum，非接入层)信令，使用LCH DCCH(Dedicated Control Channel，专用控制信道)传输；
(3)SRB2，用于传输NAS信令。SRB1使用LCH DCCH传输，且SRB2的优先级低于SRB1的优先级；
(4)SRB3，用DC(Dual Connectivity，双连接)状态下发起连接建立，并使用LCH DCCH传输。
DRB用于承载用户面数据，如IP数据包。在终端设备与网络设备间可同时最多建立8个DRB。
不同的RB对应不同的逻辑信道进行传输。在一些实施例中，通过协议预配置的方式，使得每一个RB对应一个RLC实体和逻辑信道。
接下来对R15/R16中的支持的复制传输功能进行介绍。
为支持IIoT与TSN业务的URLLC(Ultra Reliability and Low Latency Communication，超可靠低时延通信)的传输需求，保证数据传输过程的低时延和可靠性，R15/R16在IIoT项目中实现了复制传输功能，也称为包复制(Packet Duplication)。数据传输功能通过PDCP层实现。
请参考图3，其示出了PDCP层中进行复制传输的示意图。
发送端将同一个PDU(Packet Data Unit，分组数据单元)映射到n个RLC实体中(n＝1，2，3，4等)，并通过MAC层将上述n个RLC实体映射到不同的载波进行传输。由于在不同载波进行传输的情况下，多个传输信道同时出现错误的概率很小，所以使用不同的载波传输相同的数据可以降低数据传输过程错误的概率，使得复制传输过程具有可靠性；并且，接收端设备能够同时接收不同载波传输的数据，降低了数据传输过程中的时延。
在R15中，仅支持发送端使用两个RLC实体进行复制传输，即2-leg CA场景和2-leg DC场景。
在CA(Carrier Aggregation，载波聚合)场景中，使用两个RLC实体进行数据复制传输的过程如图3中的DRB 1和DRB 3所示。在复制传输过程中，某个PDCP PDU分别传输到两个RLC实体上。最终使得进行复制的PDCP PDU在两个不同聚合载波上传输，通过频率分集增益提高了数据传输的可靠性。
在DC场景中，使用两个RLC实体进行数据复制传输的过程如图3中的DRB 2所示。终端设备处于DC状态时，可以同时与两个小区进行连接。在进行复制传输时，终端设备使用两个RLC实体对同一个PDU进行传输，并将这两个RLC实体映射到不同的MAC实体上进行传输。
在R16中，为了更好地支持IIOT业务，引入了More Than 2-Leg的复制传输，即终端设备支持4-Leg CA和CA+DC进行的复制传输。
终端设备与网络设备之间除了复制传输外还支持分裂(split)传输。
在R15中规定在复制传输处于去激活状态的情况下，若满足分裂传输的条件，则PDCP实体将同时使用Primary Leg(主腿)和Secondary Leg(辅腿)传输PDCP PDU；若不满足分裂传输的条件，则只使用 Primary leg传输PDCP PDU。发送端设备可以通过配置的两个RLC实体上等待传输的PDU或RLC的数据量与门限的关系判断是否进行分裂传输。
在R16中，由于复制传输最多可以使用4个RLC实体，因此，在进行分裂传输时，需要对Secondary Leg进行配置，以便确定发送端使用哪个/哪些Secondary Leg进行分裂传输。
相关技术中只支持终端设备与网络设备之间的数据复制传输，为了实现终端设备和终端设备之间的高可靠低时延传输的需求，需要对SL上的复制传输方法进行讨论。
下面，将通过几个示例性实施例对本申请技术方案进行介绍说明。
请参考图4，其示出本申请一个实施例提供的复制传输方法的流程图。该方法可以应用于图1所示的网络构架中，该方法的执行主体是第一终端设备。该方法可以包括如下几个步骤(410-420)中的至少一个步骤：
步骤410，第一终端设备获取配置信息，该配置信息用于配置针对SL的复制传输。
在一些实施例中，配置信息用于配置针对直连通信接口的复制传输。例如，该直连通信接口为PC5接口。
在一些实施例中，配置信息符合以下情况中的至少之一：
1.配置信息是针对第一终端设备和第二终端设备的；
2.配置信息是针对第一终端设备和/或第二终端设备所使用的发送资源池的，发送资源池对应的配置信息是多个终端设备共用的，或，发送资源池对应的配置信息是第一终端设备和/或第二终端设备专用的；
3.配置信息是针对第一终端设备和/或第二终端设备所使用的接收资源池的，接收资源池对应的配置信息是多个终端设备共用的，或，接收资源池对应的配置信息是第一终端设备和/或第二终端设备专用的；
4.配置信息是针对DRB和/或SRB的。
第一终端设备是具有收发功能的设备，第二终端设备是具有收发功能并且能与第一终端设备进行SL传输的设备。第一终端设备与第二终端设备是两个不同的终端设备。
在一些实施例中，第二终端设备是某一个终端设备，例如第二终端设备是与第一终端设备进行SL传输的某个特定的终端设备。
在一些实施例中，第二终端设备是泛指至少一个终端设备，例如第二终端设备是能与第一终端设备进行SL传输的所有终端设备。
在一些实施例中，发送资源池中包含SL传输中可用于发送数据的资源信息，可选地，资源信息包括但不限于功率、频率、时隙和空间资源等信息。在一些实施例中，在失去网络覆盖的区域中，第一终端设备和/或第二终端设备使用发送资源池中可用资源的配置信息发送数据。在一些实施例中，第一终端设备和/或第二终端设备通过侦听或随机选择的方式在发送资源池中选择用于发送数据的资源。在一些实施例中，发送资源池对应的配置信息是多个终端设备共用的，多个终端设备可使用相同的发送资源池发送数据。在一些实施例中，发送资源池对应的配置信息是针对某个/某些特定的终端设备的，仅有该特定的终端设备被允许使用发送资源池对应的配置信息发送数据。可选地，发送资源池是预配置的。
在一些实施例中，接收资源池中包含SL传输中可用于接收数据的资源信息，可选地，资源信息包括但不限于功率、频率、时隙和空间资源等信息。在一些实施例中，在失去网络覆盖的区域中，第一终端设备和/或第二终端设备使用接收资源池中可用资源的配置信息接收数据。在一些实施例中，第一终端设备和/或第二终端设备通过侦听或随机选择的方式在接收资源池中选择用于接收数据的资源。在一些实施例中，接收资源池对应的配置信息是多个终端设备共用的，多个终端设备可使用相同的接收资源池接收数据。在一些实施例中，发送资源池对应的配置信息是针对某个/某些特定的终端设备的，仅有该特定的终端设备被允许使用接收资源池对应的配置信息接收数据。可选地，接收资源池是预配置的。
在一些实施例中，配置信息是单独针对DRB的。在一些实施例中，配置信息是单独针对SRB的。在一些实施例中，配置信息是针对DRB和SRB的，也即针对DRB和SRB共用(common)的。第一终端设备基于配置信息进行针对DRB和/或SRB的数据传输。
在另一些实施例中，配置信息是单独针对特定DRB的。在一些实施例中，配置信息是单独针对特定SRB的。第一终端设备基于配置信息进行针对特定的DRB和/或特定的SRB的数据传输。
在一些实施例中，配置信息包括以下至少之一：采用2个RLC实体的复制传输所对应的配置信息、采用大于2个RLC实体的复制传输所对应的配置信息。示例性地，在配置信息中包括采用2个RLC实体的复制传输所对应的配置信息的情况下，第一终端设备的PDCP层生成1个复制传输主体和1个复制传输副本，并将生成的复制传输主体与复制传输副本通过两个不同的RLC实体进行传输。示例性地，在配置信息中包括采用4个RLC实体的复制传输所对应的配置信息的情况下，第一终端设备的PDCP层生成1个复制传输主体和至少1个复制传输副本，并将生成的1个复制传输主体和至少1个复制传输副本使用不 同的RLC实体进行传输。可选地，在配置信息中包括采用4个RLC实体的复制传输所对应的配置信息的情况下，第一终端设备基于配置信息确定是否使用全部4个RLC实体进行复制传输。可选地，在配置信息中包括采用4个RLC实体的复制传输所对应的配置信息的情况下，第一终端设备基于配置信息确定使用全部4个RLC实体中的哪几个RLC实体进行复制传输。关于复制传输确定的RLC实体个数的相关内容请参考背景技术中的相关介绍，在此不进行赘述。
在一些实施例中，对于采用2个RLC实体的复制传输(也即2-leg PDCP duplication)，采用预配置的方式进行复制传输配置，即采用2个RLC实体的复制传输所对应的配置信息是预配置的。
在一些实施例中，配置信息包括以下至少之一：对应RB的至少一个RLC实体标识或LCH标识、主路径信息、复制传输是否激活的指示信息、辅路径信息、激活的RLC实体标识、激活的RLC实体组标识、允许使用的载波。
其中，对应RB的至少一个RLC实体标识或LCH标识用于指示承载数据的RLC实体标识或LCH标识信息。在一些实施例中，对应RB为SRB或DRB其中之一。在一些实施例中，对应RB为SRB和DRB。复制传输是否激活的指示信息用于指示第一终端设备和/或第二终端设备确定能否进行复制传输。激活的RLC实体标识用于指示处于激活状态的、可直接用于SL复制传输的RLC实体的信息。激活的RLC实体组标识是若干个激活的RLC实体组成的集合，或者，激活的RLC实体组标识是至少一个被激活的RLC实体组成的集合。主路径信息与辅路径信息用于指示进行分裂传输的路径。允许使用的载波用于指示终端设备进行SL复制传输过程中或SL复制传输去激活情况下，能够使用的载波信息。
在一些实施例中，配置信息包括以下至少之一：允许终端设备激活或去激活SL复制传输的指示，复制传输的使能标识。复制传输的使能标识用于指示能否进行复制传输，例如用于指示第一终端设备和/或第二终端设备能否进行复制传输。例如，第一终端设备在根据配置信息确定允许其激活SL复制传输的情况下，第一终端设备可以根据配置信息执行SL复制传输或复制传输判断，或者，第一终端设备确定复制传输的信息(如使用哪些RLC实体进行复制传输)。
在一些实施例中，配置信息包括以下至少之一：第一终端设备和/或第二终端设备的标识、RB标识。可选地，若配置信息是针对第一终端设备和第二终端设备之间的复制传输，可以在配置信息中指示该复制传输配置对应的终端设备的标识和/或RB标识。即配置信息与终端设备之间的映射关系。以网络设备配置并发送该配置信息为例，在一种可能的情况下，配置信息中可以包括第一终端设备和第二终端设备的标识，以此表示该配置信息是针对第一终端设备和第二终端设备间的SL复制传输的；在另一种可能的情况下，配置信息中可以包括第一终端设备的标识，以此表示该配置信息是针对第一终端设备和其他终端设备(如第二终端设备)的SL复制传输的；在另一种可能的情况下，网络设备向第一终端设备发送配置信息，且该配置信息中包括RB标识，以此表示该配置信息是特定RB(即RB标识所指示的RB)的。在另一种可能的情况下，网络设备向第一终端设备发送配置信息，且该配置信息中包括RB标识，或者，包括RB标识和第一终端设备的标识，或者，包括RB标识和第一终端设备的标识和第二终端设备的标识，以此表示该配置信息是针对第一终端设备的特定RB(即RB标识所指示的RB)的。
在一些实施例中，配置信息可进一步针对第一终端设备向第二终端设备的单向的SL复制传输，或者第二终端设备向第一终端设备的单向的SL复制传输，或者第一终端设备和第二终端设备之间双向的SL复制传输进行配置。可选地，在配置信息中包括方向指示信息，通过该方向指示信息指示配置信息是针对第一终端设备向第二终端设备的单向的SL复制传输，或者第二终端设备向第一终端设备的单向的SL复制传输，或者第一终端设备和第二终端设备之间双向的SL复制传输进行配置。
在一些实施例中，配置信息包括以下至少之一：分裂传输的使能标识、分裂传输的门限。分裂传输的使能标识用于指示第一终端设备和/或第二终端设备能否进行分裂传输。分裂传输的门限用于指示第一终端设备和/或第二终端设备进行分裂传输的条件，可选地，分裂传输的门限包括信道条件、终端设备RLC实体上的待传输的数据量等。
步骤420，第一终端设备根据配置信息，与第二终端设备进行SL传输。
在一些实施例中，第一终端设备根据配置信息，与第二终端设备通过PC5接口进行传输。终端设备在SL复制传输(或PC5接口的复制传输)是在PDCP层进行的。SL传输是指终端设备之间通过SL直接进行数据传输，无需经过网络设备中转数据。
示例性地，假设数据从第一终端设备发送到第二终端设备，第一终端设备根据获取的配置信息，执行针对该数据的复制传输。
在一些实施例中，第一终端设备根据配置信息，与第二终端设备进行SL传输，包括以下至少之一：
1.根据配置信息，确定是否执行针对SL的复制传输；
2.根据配置信息，确定对DRB和/或SRB是否执行复制传输；
3.根据配置信息，确定以下至少之一：执行复制传输的DRB、执行复制传输的SRB、执行复制传输的 RLC实体、激活的RLC实体、执行复制传输的RLC实体组、激活的RLC实体组、执行复制传输的副本个数；
4.根据配置信息，确定复制传输中的数据和数据副本分别发送至的RLC实体。
在一些实施例中，第一终端设备的PDCP根据配置信息，确定上述至少一项内容。例如，第一终端设备的PDCP根据配置信息，确定以下至少之一：执行复制传输的DRB、执行复制传输的SRB、执行复制传输的RLC实体。可选地，第一终端设备的PDCP对执行复制传输的RB，向确定出的传输复制数据的RLC实体发送数据和数据副本。
在一些实施例中，每个激活的RLC实体，传输数据的一个复制传输的副本。
在示例性实施例中，第一终端设备获取配置信息，配置信息中包含复制传输激活的指示信息、SRB对应的RLC实体标识、激活的RLC实体组标识、采用两个RLC实体的复制传输标识。第一终端设备基于复制传输激活的指示信息确定在SL中进行复制传输，并通过SRB对应的RLC实体标识确定用来承载复制传输主体和复制传输副本的RLC实体，激活的RLC实体组标识指示RLC实体2、RLC实体3、RLC实体9和RLC实体14处于激活状态，第一终端设备基于配置信息中采用两个RLC实体的复制传输标识在激活的RLC实体组标识中选择选择RLC实体2和RLC实体3用于SL复制传输。第一终端设备基于上述信息使用RLC实体2和RLC实体3与第二终端设备进行SL复制传输。
需要说明的是，复制传输主要适用于单播(unicast)传输或对应单播的DRB，但是不排除也可用于组播或广播。另外，SL复制传输，适用于CA场景，即为CA复制传输。
在一些实施例中，第一终端设备在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，确定是否执行针对SL的分裂传输；在确定执行针对SL的分裂传输的情况下，使用主路径和辅路径进行数据分裂传输。例如，第一终端设备的PDCP在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，如果进一步确定执行针对SL的分裂传输的情况下，PDCP使用主路径和辅路径进行数据分裂传输。可选地，第一终端设备可以自行确定是否执行针对SL的分裂传输，也可以根据网络设备的指示确定是否执行针对SL的分裂传输。
在一些实施例中，第一终端设备在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，执行单RLC实体传输。可选地，第一终端设备可以自行确定是否执行单RLC实体传输，也可以根据网络设备的指示确定是否执行单RLC实体传输。
在一些实施例中，第一终端设备向网络设备发送辅助信息，该辅助信息用于网络设备确定以下至少之一：配置的SL的复制传输、激活和/或去激活的SL的复制传输、确定激活和/或去激活的RLC实体。示例性地，辅助信息包括但不限于以下至少之一：信道质量、误码率、QoS(Quality of Service，服务质量)相关信息、可靠性要求等。示例性地，辅助信息包括但不限于以下至少之一：SL的复制传输配置、SL的复制传输激活和/或去激活指示、激活和/或去激活的RLC实体。所述辅助信息，作为网络设备使用或配置的参考信息，或者，网络设备直接使用或配置所述辅助信息。
在一些实施例中，第一终端设备还以下执行以下步骤中的至少之一：
1、获取第一激活信令，该第一激活信令用于指示激活针对SL的复制传输；
2、获取第一去激活信令，该第一去激活信令用于指示去激活针对SL的复制传输；
3、获取第二激活信令，该第二激活信令用于指示激活针对SL的复制传输所使用的RLC实体；
4、获取第二去激活信令，该第二去激活信令用于指示去激活针对SL的复制传输所使用的RLC实体。
5、获取第三激活信令，该第三激活信令用于指示激活或使用分裂传输所使用的RLC实体，或者，指示激活或使用分裂传输。
在一些实施例中，上述第一激活信令、第一去激活信令、第二激活信令、第二去激活信令和第三激活信令中的至少一项，是由网络设备配置或预配置的。
在一些实施例中，上述第一激活信令、第一去激活信令、第二激活信令、第二去激活信令和第三激活信令中的至少一项，是由目标终端设备配置的，目标终端设备为以下之一：第一终端设备、第二终端设备、第一终端设备和第二终端设备之外的另一第三终端设备。例如，第三终端设备可以是具有控制功能的终端设备。
本申请提供了一种针对SL的复制传输方案，通过第一终端设备获取配置信息并根据配置信息与第二终端设备进行SL复制数据传输，有助于提升SL中终端设备间数据传输的可靠性，以满足更多的业务需求。
在一些实施例中，配置信息是由网络设备配置或预配置的。例如，对于终端设备间的SL复制传输，相应的配置信息是通过网络设备配置或预配置的方式，指示给终端设备的。第一终端设备和第二终端设备使用网络设备配置或预配置的配置信息，执行SL复制传输。
在一些实施例中，配置信息是由网络设备配置的。所谓由网络设备配置，是指由网络设备生成该配置 信息，并由网络设备将该配置信息发送给终端设备，如网络设备将该配置信息发送给第一终端设备和/或第二终端设备。
在一些实施例中，配置信息是预配置的。所谓预配置，是指可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不作限定。比如预配置的可以是指协议中定义的。在本申请一些实施例中，所述“协议”可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不作限定。
另外，有关配置信息的介绍说明可参见上文实施例，此处不再赘述。
在一些实施例中，网络设备向第一终端设备和第二终端设备分别发送配置信息。在这种方式下，配置信息由网络设备发送给进行SL传输的两个终端设备。例如，网络设备通过Uu接口向第一终端设备和第二终端设备分别发送配置信息。可选地，网络设备可以通过RRC消息(如SL-configDedicated，或SL-PDCP-config)将配置信息发送给终端设备。
在一些实施例中，网络设备向第一终端设备发送配置信息，且第一终端设备将配置信息发送给第二终端设备；或者，网络设备向第二终端设备发送配置信息，且第二终端设备将配置信息发送给第一终端设备。例如，第一终端设备通过PC5接口，将配置信息发送给第二终端设备；或者，第二终端设备通过PC5接口，将配置信息发送给第一终端设备。另外，对于这种情况，可以是接收到配置信息的终端设备使能了SL复制传输(例如网络设备向第一终端设备发送配置信息，则说明该第一终端设备使能了SL复制传输；或者，网络设备向第二终端设备发送配置信息，则说明该第二终端设备使能了SL复制传输)，也可以是第一终端设备和第二终端设备都使能了SL复制传输。另外，对于这种情况，可以是配置信息中指示的终端设备使能了SL复制传输(例如网络设备向第一终端设备发送配置信息，所述配置信息中携带第二终端设备的标识，则说明该第二终端设备使能了SL复制传输)。
在一些实施例中，网络设备向第一终端设备发送配置信息，且第一终端设备不将配置信息发送给第二终端设备；或者，网络设备向第二终端设备发送配置信息，且第二终端设备不将配置信息发送给第一终端设备。对于这种情况，只有接收到配置信息的终端设备使能了SL复制传输(例如网络设备向第一终端设备发送配置信息，则说明该第一终端设备使能了SL复制传输；或者，网络设备向第二终端设备发送配置信息，则说明该第二终端设备使能了SL复制传输)。
在一些实施例中，网络设备向第一终端设备和第二终端设备中的发送端发送配置信息。所谓发送端，是指第一终端设备和第二终端设备在进行SL通信时，作为发送一方的终端设备。例如，第一终端设备向第二终端设备发送数据，则第一终端设备为发送端；第二终端设备向第一终端设备发送数据，则第二终端设备为发送端。发送端也可以称为发送终端、发端UE、发送实体对应的终端等其他名称，本申请对此不作限定。
在一些实施例中，网络设备配置或预配置的配置信息中，包括执行SL传输所需的全部配置参数。例如，网络设备配置或预配置的配置信息中，包括执行SL的复制传输所需的全部配置参数。终端设备完全根据网络设备的配置信息，执行SL的复制传输。
通过网络设备配置终端设备间SL复制传输的配置参数，终端设备根据网络设备配置的参数进行SL复制传输，使得SL复制传输尽可能地受网络控制。
在一些实施例中，上文实施例中介绍的信令是由网络设备配置或预配置的，该信令包括第一激活信令、第一去激活信令、第二激活信令、第二去激活信令和第三激活信令中的至少一项。
在一些实施例中，网络设备向第一终端设备和第二终端设备分别发送该信令。
在一些实施例中，网络设备向第一终端设备发送该信令，且第一终端设备将该信令发送给第二终端设备；或者，网络设备向第二终端设备发送该信令，且第二终端设备将该信令发送给第一终端设备。
在一些实施例中，网络设备向第一终端设备发送该信令，且第一终端设备不将该信令发送给第二终端设备；或者，网络设备向第二终端设备发送该信令，且第二终端设备不将该信令发送给第一终端设备。
在一些实施例中，网络设备向第一终端设备和第二终端设备中的发送端发送该信令。
在该信令是由网络设备配置或预配置的情况下，有关该信令的发送方式，与配置信息的发送方式相类似，具体可参见上文关于配置信息发送方式的介绍说明，此处不再赘述。
在一些实施例中，网络设备配置或预配置的配置信息中，包括执行SL传输所需的部分配置参数，且第一终端设备自行确定执行SL传输所需的剩余部分配置参数。例如，网络设备配置或预配置的配置信息中，包括执行SL复制传输所需的部分配置参数，且第一终端设备自行确定执行SL复制传输所需的剩余部分配置参数。
有关配置信息的介绍说明可参见上文实施例，此处不再赘述。
在一些实施例中，第一终端设备接收来自网络设备的第一指示信息，该第一指示信息用于指示是否允许终端设备自行确定针对SL的复制传输的配置参数。可选地，第一指示信息可以携带在配置信息中，也可以独立于配置信息单独发送。如果第一终端设备根据该第一指示信息，确定网络设备允许其自行确定针对SL的复制传输的配置参数，那么第一终端设备可以自行确定针对SL的复制传输的部分或全部配置参数，或者，第一终端设备可以使能网络配置或预配置好的多套配置参数中的一个。如果第一终端设备根据该第一指示信息，确定网络设备不允许其自行确定针对SL的复制传输的配置参数，那么第一终端设备根据网络设备配置的或预配置的配置信息，确定针对SL的复制传输的配置参数，或者，第一终端设备可以使能网络配置或预配置好的多套配置参数中的默认配置参数。
示例性地，对于大于2个RLC实体的复制传输，是否执行复制传输由网络设备配置或预配置，具体使用哪个RLC实体可以由终端设备(如发送端)自行确定。
在一些实施例中，第一终端设备接收来自网络设备的第二指示信息，该第二指示信息用于指示是否允许终端设备自行确定激活或去激活针对SL的复制传输。可选地，第二指示信息可以携带在配置信息中，也可以独立于配置信息单独发送。如果第一终端设备根据该第二指示信息，确定网络设备允许终端设备自行确定激活或去激活针对SL的复制传输，那么第一终端设备可以根据实际传输需求，自行激活或去激活针对SL的复制传输。如果第一终端设备根据该第二指示信息，确定网络设备不允许终端设备自行确定激活或去激活针对SL的复制传输，那么第一终端设备根据网络设备的激活或去激活信令，来确定激活或去激活针对SL的复制传输。
在一些实施例中，在网络设备通过激活或去激活信令，向终端设备指示激活或去激活针对SL的复制传输的情况下，第一终端设备可以接收来自于网络设备的第一激活信令，该第一激活信令用于指示激活针对SL的复制传输，第一终端设备根据该第一激活信令，确定激活针对SL的复制传输；或者，第一终端设备可以接收来自于网络设备的第一去激活信令，该第一去激活信令用于指示激活针对SL的复制传输，第一终端设备根据该第一去激活信令，确定去激活针对SL的复制传输。
在一些实施例中，第一终端设备接收来自网络设备的第三指示信息，该第三指示信息用于指示是否允许终端设备自行确定激活或去激活针对SL的复制传输的RLC实体。可选地，第三指示信息可以携带在配置信息中，也可以独立于配置信息单独发送。如果第一终端设备根据该第三指示信息，确定网络设备允许终端设备自行确定激活或去激活针对SL的复制传输的RLC实体，那么第一终端设备可以根据实际传输需求，自行激活或去激活针对SL的复制传输的RLC实体。如果第一终端设备根据该第三指示信息，确定网络设备不允许终端设备自行确定激活或去激活针对SL的复制传输的RLC实体，那么第一终端设备根据网络设备的激活或去激活信令，来确定激活或去激活针对SL的复制传输的RLC实体。
在一些实施例中，在网络设备通过激活或去激活信令，向终端设备指示激活或去激活针对SL的复制传输的RLC实体的情况下，第一终端设备可以接收来自于网络设备的第二激活信令，该第二激活信令用于指示激活针对SL的复制传输所使用的RLC实体，第一终端设备根据该第二激活信令，确定激活针对SL的复制传输所使用的RLC实体；或者，第一终端设备可以接收来自于网络设备的第二去激活信令，该第二去激活信令用于指示去激活针对SL的复制传输所使用的RLC实体，第一终端设备根据该第二去激活信令，确定去激活针对SL的复制传输所使用的RLC实体。
另外，上述第一指示信息、第二指示信息和第三指示信息可以单独发送，也可以其中两个或者三个同时发送，本申请对此不作限定。
通过网络设备和终端设备共同确定SL复制传输的配置参数，相比于全部由网络设备配置SL复制传输的配置参数，能够减少网络侧的信令开销和处理开销，但是需要终端设备参与部分参数的确定，终端设备的复杂度相对提高。
在一些实施例中，配置信息是由目标终端设备配置的，该目标终端设备为以下之一：第一终端设备、第二终端设备、第一终端设备和第二终端设备之外的另一第三终端设备。例如，上述第三终端设备可以是具有控制功能的终端设备。
有关配置信息的介绍说明可参见上文实施例，此处不再赘述。
在一些实施例中，配置信息通过直连通信接口发送给第一终端设备和/或第二终端设备。示例性地，该直连通信接口为PC5接口。以第一终端设备和第二终端设备执行SL传输为例，在一种可能的情况下，第三终端设备配置该配置信息，第三终端设备通过直连通信接口，将配置信息发送给第一终端设备和第二终端设备；在另一种可能的情况下，第一终端设备配置该配置信息，第一终端设备通过直连通信接口，将配置信息发送给第二终端设备；在另一种可能的情况下，第二终端设备配置该配置信息，第二终端设备通过直连通信接口，将配置信息发送给第二终端设备。在一些其他实施例中，如果第一终端设备或第二终端设备作为发送端，配置该配置信息，该配置信息也可以不发送给对端设备(也即接收端)。在一些实施例中， 配置信息通过直连通信接口发送给第一终端设备和第二终端设备中的发送端。
示例性地，该直连通信接口为PC5接口。以第一终端设备和第二终端设备执行SL传输为例，在一种可能的情况下，第三终端设备配置该配置信息，第三终端设备通过直连通信接口，将配置信息发送给第一终端设备和第二终端设备中的发送端(例如第一终端设备作为发送端，那么第三终端设备通过直连通信接口将该配置信息发送给第一终端设备；又例如第二终端设备作为发送端，那么第三终端设备通过直连通信接口将该配置信息发送给第二终端设备)；在另一种可能的情况下，第一终端设备作为接收端，第二终端设备作为发送端，第一终端设备配置该配置信息，第一终端设备通过直连通信接口，将配置信息发送给第二终端设备；在另一种可能的情况下，第二终端设备作为接收端，第一终端设备作为发送端，第二终端设备配置该配置信息，第二终端设备通过直连通信接口，将配置信息发送给第二终端设备。在一些其他实施例中，如果第一终端设备或第二终端设备作为发送端，配置该配置信息，该配置信息也可以不发送给对端设备(也即接收端)。
在另一些实施例中，配置信息通过直连通信接口转发给第一终端设备和第二终端设备中的发送端。示例性地，以第一终端设备为发送端为例，假设网络设备或具有控制功能的终端设备与第一终端设备之间没有接口，无法直接进行通信，那么网络设备或具有控制功能的终端设备可以将配置信息发送给与第一终端设备具有接口(即可以直接通信)的终端设备(如第三终端设备，又如第二终端设备)，该终端设备再通过直连通信接口将配置信息转发给第一终端设备。可选地，网络设备或具有控制功能的终端设备在将配置信息发送给与第一终端设备具有接口(即可以直接通信)的终端设备时，可以同时携带第一终端设备的标识。
在一些实施例中，配置信息通过网络设备发送给第一终端设备和/或第二终端设备。以第一终端设备和第二终端设备执行SL传输为例，在一种可能的情况下，第三终端设备配置该配置信息，第三终端设备通过网络设备，将配置信息发送给第一终端设备和第二终端设备；在另一种可能的情况下，第一终端设备配置该配置信息，第一终端设备通过网络设备，将配置信息发送给第二终端设备；在另一种可能的情况下，第二终端设备配置该配置信息，第二终端设备通过网络设备，将配置信息发送给第二终端设备。在一些其他实施例中，如果第一终端设备或第二终端设备作为发送端，配置该配置信息，该配置信息也可以不发送给对端设备(也即接收端)。
在一些实施例中，配置信息通过网络设备发送给第一终端设备和第二终端设备中的发送端。以第一终端设备和第二终端设备执行SL传输为例，在一种可能的情况下，第三终端设备配置该配置信息，第三终端设备通过网络设备，将配置信息发送给第一终端设备和第二终端设备中的发送端(例如第一终端设备作为发送端，那么第三终端设备通过网络设备将该配置信息发送给第一终端设备；又例如第二终端设备作为发送端，那么第三终端设备通过网络设备将该配置信息发送给第二终端设备)；在另一种可能的情况下，第一终端设备作为接收端，第二终端设备作为发送端，第一终端设备配置该配置信息，第一终端设备通过网络设备，将配置信息发送给第二终端设备；在另一种可能的情况下，第二终端设备作为接收端，第一终端设备作为发送端，第二终端设备配置该配置信息，第二终端设备通过网络设备，将配置信息发送给第一终端设备。在一些其他实施例中，如果第一终端设备或第二终端设备作为发送端，配置该配置信息，该配置信息也可以不发送给对端设备(也即接收端)。
通过终端设备自行确定SL复制传输的配置参数，省略网络配置，能够最大程度地减少网络侧的信令配开销和处理开销，但是使得终端行为在一定程度上不受网络控制。
在一些实施例中，上文实施例中介绍的信令是由目标终端设备配置的，该信令包括第一激活信令、第一去激活信令、第二激活信令、第二去激活信令和第三激活信令中的至少一项。
在一些实施例中，该信令通过直连通信接口发送给第一终端设备和/或第二终端设备。
在一些实施例中，该信令通过直连通信接口发送给第一终端设备和第二终端设备中的发送端。
在一些实施例中，该信令通过网络设备发送给第一终端设备和/或第二终端设备。
在一些实施例中，该信令通过网络设备发送给第一终端设备和第二终端设备中的发送端。
在该信令是由目标终端设备配置的情况下，有关该信令的发送方式，与配置信息的发送方式相类似，具体可参见上文关于配置信息发送方式的介绍说明，此处不再赘述。
下面，通过几个实施例对本申请技术方案进行介绍说明。
在一些实施例中，对UE和UE之间的复制传输，复制传输配置通过网络预配置或配置的方式指示给UE，UE1和UE2使用网络预配置或配置的复制传输参数执行复制传输操作。说明：复制传输主要适用于单播(unicast)传输或对应单播的DRB，但是不排除用于组播或广播。说明：SL复制传输，适用于CA场景，即为CA复制传输。
具体实现过程可以如下：
1.对UE和UE之间的复制传输，通过网络为UE1和UE2预配置或配置复制传输配置。具体的包括以下至少之一：
1)所述复制传输配置，是针对UE1和UE2之间的。
2)所述复制传输配置，是针对DRB和/或SRB的。
3)所述复制传输配置，包括以下至少之一：moreThanOneRLC，moreThanTwoRLC-DRB。
4)所述复制传输配置，包括以下至少之一：对应RB的至少一个RLC/LCH标识，主路径信息(主路径归属的小区组，和/或，主路径对应的逻辑信道标识)，DataSplitThreshold，复制传输是否激活，辅路径信息(辅路径归属的小区组，和/或，辅路径对应的逻辑信道标识)，激活的RLC实体标识，允许使用的载波(不同路径可以使用的载波不同)。
5)若所述复制传输的配置是针对UE1和UE2之间的，网络同时指示所述复制传输配置对应的UE标识，即复制传输参数与UE-UE之间的映射关系，和/或，RB标识。
针对5)，进一步地，可以针对UE1→UE2，或UE2→UE1，或UE1-UE2进行配置。
2.UE接收来自网络的复制传输预配置或配置。具体的：
情况1：上述1中的复制传输预配置或配置，由网络分别指示给相关的两个UE，如gNB之间通过RRC消息(如SL-configDedicated，或SL-PDCP-config)配置给UE1和UE2。
情况2：上述1中的复制传输预配置或配置，由网络指示给其中一个UE(如通过Uu接口)，又该UE交互给另一个UE(如通过PC5接口)。所述基站指示给其中一个UE，例如如下：
i.由基站指示给任一个UE。
ii.由基站指示复制传输发送实体对应的UE，或发端UE。
情况3：上述1中的复制传输预配置或配置，由网络指示给其中一个UE(如通过Uu接口)。例如如下：
i.由基站指示复制传输发送实体对应的UE，或发端UE。
3.UE1和UE2通过PC5接口进行传输。假设数据从UE1发送到UE2，UE1根据收到的SL UE1-UE2的复制传输配置，执行复制传输。包括：
1)UE1的PDCP执行复制传输判断，和/或，确定数据和数据副本向哪些RLC实体发送。
2)在不执行复制传输或复制传输去激活的情况下，确定是否执行分裂传输。在分裂传输执行的情况下，使用主路径和辅路径进行数据分裂传输。
3)可选地，UE可以上报辅助信息给基站，用于基站确定激活/去激活的RLC。
特别地，对2-leg的复制传输，也可以是网络预配置的复制传输配置。
在本实施例中，UE通过网络配置UE-UE之间的复制传输参数的方式获取复制传输配置，以及，如何根据网络配置的复制传输参数执行复制传输操作。本方案使得UE-UE复制传输尽可能的受控于网络指示。
在一些实施例中，对UE和UE之间的复制传输，复制传输配置使用与否是通过网络预配置或配置的方式指示给UE。可选地，对up to 4-leg的复制传输架构，具体使用的path资源是UE(如发端UE)自己确定的，UE1相应的实现与UE2之间的复制传输。说明：复制传输主要适用于单播(unicast)传输或对应单播的DRB，但是不排除用于组播或广播。说明：SL复制传输，适用于CA场景，即为CA复制传输。
具体实现过程可以如下：
1.对UE和UE之间的复制传输，通过网络为UE1和UE2预配置或配置复制传输配置。具体的包括以下至少之一：
1)所述复制传输配置，是针对UE1和UE2之间的，或者，是针对TX pool(发送资源池)的。
2)所述复制传输配置，是针对DRB和/或SRB的。
3)所述复制传输配置，包括以下至少之一：2-leg duplication或者up to 4-leg duplication。
4)所述复制传输配置，包括以下至少之一：DataSplitThreshold，复制传输是否激活，主路径信息(主路径归属的小区组，和/或，主路径对应的逻辑信道标识)，对应RB的至少一个RLC/LCH标识，允许使用的载波(不同路径可以使用的载波不同)。
5)若所述复制传输的配置是针对UE1和UE2之间的，网络同时指示所述复制传输配置对应的UE标识，即duplication参数与UE-UE之间的mapping关系，和/或，RB标识。
针对5)，进一步地，可以针对UE1→UE2，或UE2→UE1，或UE1-UE2进行配置。
6)可选地，网络指示UE是否可以确定复制传输配置。
2.UE接收来自网络的复制传输预配置或配置。具体的：
情况1：上述1中的复制传输预配置或配置，由网络分别指示给相关的两个UE，如gNB之间通过RRC消息(如SL-configDedicated，或SL-PDCP-config)配置给UE1和UE2。
情况2：上述1中的复制传输预配置或配置，由网络指示给其中一个UE(如通过Uu接口)，又该UE交互给另一个UE(如通过PC5接口)。所述基站指示给其中一个UE，例如如下：
i.由基站指示给任一个UE。
ii.由基站指示复制传输发送实体对应的UE，或发端UE。
情况3：上述1中的复制传输配置，由网络指示给其中一个UE(如通过Uu接口)。例如如下：
i.由基站指示复制传输发送实体对应的UE，或发端UE。
3.UE1和UE2通过PC5接口进行传输。假设数据从UE1发送到UE2，UE1根据收到的SL UE1-UE2的复制传输配置，执行复制传输。包括：
1)UE1的PDCP根据基站的复制传输配置信息，确定是否执行复制传输，或者确定对DRB/SRB是否执行复制传输。
2)可选地，UE1 PDCP确定以下至少之一：执行复制传输的DRB标识，执行复制传输的SRB标识，执行复制传输的RLC实体标识。
3)UE1 PDCP对执行复制传输的RB，向确定出的传输复制数据的RLC实体发送数据和数据副本。
4)UE1 PDCP在根据网络指示确定不执行复制传输的情况下执行单RLC实体传输。或者，UE1 PDCP在根据网络指示确定不执行复制传输的情况下，根据网络配置信息(如split门限)，确定是否执行split传输。在split传输执行的情况下，确定主路径和/或辅路径，并使用主路径和辅路径进行数据split传输。
5)可选地，UE可以上报辅助信息给基站，用于基站确定激活/去激活的RLC。
特别地：对2-leg的复制传输，也可以是网络预配置的复制传输配置。
在本实施例中，由UE和网络共同确定复制传输的信息，实现UE-UE之间的复制传输。对比上一实施例，减少网络信令配置，但是需要UE参与部分复制传输参数确定，UE复杂度高。
在一些实施例中，对UE和UE之间的复制传输，由UE确定是否执行复制传输和复制传输的配置信息，UE1和UE2使用UE确定的复制传输配置执行复制传输操作。说明：复制传输主要适用于单播(unicast)传输或对应单播的DRB，但是不排除用于组播或广播。说明：SL复制传输，适用于CA场景，即为CA复制传输。
具体实现过程可以如下：
1.对UE和UE之间的复制传输，通过UE为UE1和UE2配置复制传输配置，或由UE确定。具体的包括以下至少之一：
1)所述复制传输配置，是针对UE1和UE2之间的，或者，是针对TX pool的(针对UE与所有可能的UE之间的TX pool)。
2)所述复制传输配置，是针对DRB和/或SRB的。
3)所述复制传输配置，包括以下至少之一：2-leg duplication或者up to 4-leg duplication。
4)所述复制传输配置，包括以下至少之一：对应RB的至少一个RLC/LCH标识，DataSplitThreshold，复制传输是否激活，主路径信息(主路径归属的小区组，和/或，主路径对应的逻辑信道标识)，DataSplitThreshold，复制传输是否激活，辅路径信息(辅路径归属的小区组，和/或，辅路径对应的逻辑信道标识)，激活的RLC实体标识，允许使用的载波(不同路径可以使用的载波不同)。
5)可选地，若所述复制传输的配置是针对UE1和UE2之间的，在发送该配置时，同时指示所述复制传输配置对应的UE标识，即复制传输参数与UE-UE之间的映射关系，和/或，RB标识。
针对5)，进一步地，可以针对UE1→UE2，或UE2→UE1，或UE1-UE2进行配置。
6)可选地，网络指示UE是否可以确定duplication配置。
2.可选地，UE-UE之间的复制传输配置，由UE发送。可选地，当确定复制传输配置的UE不是发端UE的时候，该复制传输配置需要发送给对端UE。具体的包括以下至少之一：
1)情况1：上述1中的复制传输配置，由UE直接指示给对端UE(如通过PC5接口)。
2)情况2：上述1中的复制传输配置，由UE通过网络指示给对端UE(如通过Uu接口)。
3)UE1和UE2通过PC5接口进行传输。假设数据从UE1发送到UE2，UE1根据步骤1和/或步骤2所述，确定是否执行复制传输，和/或，执行复制传输/非复制传输。
在本实施例中，对UE-UE之间的复制传输，由UE自行确定并执行。对比上文实施例，省略网络配置，但是使得UE行为在一定程度上不受网络控制。
下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
请参考图5，其示出了本申请一个实施例提供的针对SL的复制传输装置的框图。该装置具有实现上 述第一终端设备侧的方法示例的功能，该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的第一终端设备，也可以设置于在第一终端设备中。如图5所示，该装置500可以包括：获取模块510和传输模块520。
获取模块510，用于获取配置信息，所述配置信息用于配置针对SL的复制传输；
传输模块520，用于根据所述配置信息，与第二终端设备进行SL传输。
在一些实施例中，所述配置信息符合以下情况中的至少之一：
所述配置信息是针对所述第一终端设备和/或所述第二终端设备的；
所述配置信息是针对所述第一终端设备和/或所述第二终端设备所使用的发送资源池的，所述发送资源池对应的配置信息是多个终端设备共用的，或，所述发送资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
所述配置信息是针对所述第一终端设备和/或所述第二终端设备所使用的接收资源池的，所述接收资源池对应的配置信息是多个终端设备共用的，或，所述接收资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
所述配置信息是针对数据无线承载DRB和/或信令无线承载SRB的。
在一些实施例中，所述配置信息包括以下至少之一：采用2个无线链路控制RLC实体的复制传输所对应的配置信息、采用大于2个RLC实体的复制传输所对应的配置信息。
在一些实施例中，所述配置信息包括以下至少之一：对应无线承载RB的至少一个RLC实体标识或逻辑信道LCH标识、主路径信息、复制传输是否激活的指示信息、辅路径信息、激活的RLC实体标识、激活的RLC实体组标识、允许使用的载波。
在一些实施例中，所述配置信息包括以下至少之一：所述第一终端设备和/或所述第二终端设备的标识、RB标识。
在一些实施例中，所述配置信息包括以下至少之一：分裂传输的使能标识、分裂传输的门限。
在一些实施例中，所述传输模块520，用于执行以下至少之一：
根据所述配置信息，确定是否执行针对SL的复制传输；
根据所述配置信息，确定对DRB和/或SRB是否执行复制传输；
根据所述配置信息，确定以下至少之一：执行复制传输的DRB、执行复制传输的SRB、执行复制传输的RLC实体、激活的RLC实体、执行复制传输的RLC实体组、激活的RLC实体组、执行复制传输的副本个数；
根据所述配置信息，确定复制传输中的数据和数据副本分别发送至的RLC实体。
在一些实施例中，所述传输模块520还用于在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，确定是否执行针对SL的分裂传输；在确定执行针对SL的分裂传输的情况下，使用主路径和辅路径进行数据分裂传输。
在一些实施例中，所述传输模块520还用于在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，执行单RLC实体传输。
在一些实施例中，所述传输模块520还用于向网络设备发送辅助信息，所述辅助信息用于所述网络设备确定以下至少之一：配置的SL的复制传输、激活和/或去激活的SL的复制传输、激活和/或去激活的RLC实体。
在一些实施例中，所述配置信息是由网络设备配置或预配置的。
在一些实施例中，所述网络设备向所述第一终端设备和所述第二终端设备分别发送所述配置信息；或者，所述网络设备向所述第一终端设备发送所述配置信息，且所述第一终端设备将所述配置信息发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述配置信息，且所述第二终端设备将所述配置信息发送给所述第一终端设备；或者，所述网络设备向所述第一终端设备发送所述配置信息，且所述第一终端设备不将所述配置信息发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述配置信息，且所述第二终端设备不将所述配置信息发送给所述第一终端设备；或者，所述网络设备向所述第一终端设备和所述第二终端设备中的发送端发送所述配置信息。
在一些实施例中，所述配置信息是由目标终端设备配置的，所述目标终端设备为以下之一：所述第一终端设备、所述第二终端设备、所述第一终端设备和所述第二终端设备之外的另一第三终端设备。
在一些实施例中，所述配置信息通过直连通信接口发送给所述第一终端设备和/或所述第二终端设备；或者，所述配置信息通过直连通信接口发送给所述第一终端设备和所述第二终端设备中的发送端；或者，所述配置信息通过网络设备发送给所述第一终端设备和/或所述第二终端设备；或者，所述配置信息通过网络设备发送给所述第一终端设备和所述第二终端设备中的发送端。
在一些实施例中，所述配置信息包括执行所述SL传输所需的全部配置参数；或者，所述配置信息包 括执行所述SL传输所需的部分配置参数，且所述第一终端设备自行确定执行所述SL传输所需的剩余部分配置参数。
在一些实施例中，所述传输模块520还用于执行以下至少之一：
接收来自网络设备的第一指示信息，所述第一指示信息用于指示是否允许终端设备自行确定针对SL的复制传输的配置参数；
接收来自网络设备的第二指示信息，所述第二指示信息用于指示是否允许终端设备自行确定激活或去激活针对SL的复制传输；
接收来自网络设备的第三指示信息，所述第三指示信息用于指示是否允许终端设备自行确定激活或去激活针对SL的复制传输的RLC实体。
在一些实施例中，所述获取模块510还用于执行以下至少之一：
获取第一激活信令，所述第一激活信令用于指示激活针对SL的复制传输；
获取第一去激活信令，所述第一去激活信令用于指示去激活针对SL的复制传输；
获取第二激活信令，所述第二激活信令用于指示激活针对SL的复制传输所使用的RLC实体；
获取第二去激活信令，所述第二去激活信令用于指示去激活针对SL的复制传输所使用的RLC实体；
获取第三激活信令，所述第三激活信令用于指示激活或使用分裂传输所使用的RLC实体，或者，指示激活或使用分裂传输。
在一些实施例中，所述信令是由网络设备配置或预配置的，所述信令包括所述第一激活信令、所述第一去激活信令、所述第二激活信令、所述第二去激活信令和所述第三激活信令中的至少一项。
在一些实施例中，所述网络设备向所述第一终端设备和所述第二终端设备分别发送所述信令；
或者，
所述网络设备向所述第一终端设备发送所述信令，且所述第一终端设备将所述信令发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述信令，且所述第二终端设备将所述信令发送给所述第一终端设备；
或者，
所述网络设备向所述第一终端设备发送所述信令，且所述第一终端设备不将所述信令发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述信令，且所述第二终端设备不将所述信令发送给所述第一终端设备；
或者，
所述网络设备向所述第一终端设备和所述第二终端设备中的发送端发送所述信令。
在一些实施例中，所述信令是由目标终端设备配置的，所述信令包括所述第一激活信令、所述第一去激活信令、所述第二激活信令、所述第二去激活信令和所述第三激活信令中的至少一项，所述目标终端设备为以下之一：所述第一终端设备、所述第二终端设备、所述第一终端设备和所述第二终端设备之外的另一第三终端设备。
在一些实施例中，所述信令通过直连通信接口发送给所述第一终端设备和/或所述第二终端设备；
或者，
所述信令通过直连通信接口发送给所述第一终端设备和所述第二终端设备中的发送端；
或者，
所述信令通过网络设备发送给所述第一终端设备和/或所述第二终端设备；
或者，
所述信令通过网络设备发送给所述第一终端设备和所述第二终端设备中的发送端。
请参考图6，其示出了本申请另一个实施例提供的针对SL的复制传输装置的框图。该装置具有实现上述网络设备侧的方法示例的功能，该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的网络设备，也可以设置于在网络设备中。如图6所示，该装置600可以包括：发送模块610。
发送模块610，用于向至少一个终端设备发送配置信息，所述配置信息用于配置针对SL的复制传输。
在一些实施例中，所述配置信息符合以下情况中的至少之一：
所述配置信息是针对第一终端设备和/或第二终端设备的；
所述配置信息是针对第一终端设备和/或第二终端设备所使用的发送资源池的，所述发送资源池对应的配置信息是多个终端设备共用的，或，所述发送资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
所述配置信息是针对所述第一终端设备和/或所述第二终端设备所使用的接收资源池的，所述接收资源 池对应的配置信息是多个终端设备共用的，或，所述接收资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
所述配置信息是针对数据无线承载DRB和/或信令无线承载SRB的。
在一些实施例中，所述配置信息包括以下至少之一：采用2个无线链路控制RLC实体的复制传输所对应的配置信息、采用大于2个RLC实体的复制传输所对应的配置信息。
在一些实施例中，所述配置信息包括以下至少之一：对应无线承载RB的至少一个RLC实体标识或逻辑信道LCH标识、主路径信息、复制传输是否激活的指示信息、辅路径信息、激活的RLC实体标识、激活的RLC实体组标识、允许使用的载波。
在一些实施例中，所述配置信息包括以下至少之一：所述第一终端设备和/或所述第二终端设备的标识、RB标识。
在一些实施例中，所述配置信息包括以下至少之一：分裂传输的使能标识、分裂传输的门限。
在一些实施例中，所述配置信息用于确定以下至少之一：
是否执行针对SL的复制传输；
对DRB和/或SRB是否执行复制传输；
执行复制传输的DRB；
执行复制传输的SRB；
执行复制传输的RLC实体；
激活的RLC实体；
执行复制传输的RLC实体组；
激活的RLC实体组；
执行复制传输的副本个数；
复制传输中的数据和数据副本分别发送至的RLC实体。
在一些实施例中，所述发送模块610用于：
向第一终端设备和第二终端设备分别发送所述配置信息；
或者，
向第一终端设备发送所述配置信息，且所述第一终端设备将所述配置信息发送给第二终端设备；或者，向第二终端设备发送所述配置信息，且所述第二终端设备将所述配置信息发送给第一终端设备；
或者，
向第一终端设备发送所述配置信息，且所述第一终端设备不将所述配置信息发送给第二终端设备；或者，向第二终端设备发送所述配置信息，且所述第二终端设备不将所述配置信息发送给第一终端设备；
或者，
向第一终端设备和第二终端设备中的发送端发送所述配置信息；
其中，所述第一终端设备和所述第二终端设备是进行SL传输的一组终端设备。
在一些实施例中，所述发送模块610还用于执行以下至少之一：
向所述终端设备发送第一指示信息，所述第一指示信息用于指示是否允许所述终端设备自行确定针对SL的复制传输的配置参数；
向所述终端设备发送第二指示信息，所述第二指示信息用于指示是否允许所述终端设备自行确定激活或去激活针对SL的复制传输；
向所述终端设备发送第三指示信息，所述第三指示信息用于指示是否允许所述终端设备自行确定激活或去激活针对SL的复制传输的RLC实体。
在一些实施例中，所述装置600还包括：
接收模块，用于接收所述终端设备发送的辅助信息；
确定模块，用于根据所述辅助信息执行以下至少之一：确定配置的SL的复制传输、确定激活和/或去激活的SL的复制传输、确定激活和/或去激活的RLC实体。
在一些实施例中，所述配置信息包括执行SL传输所需的全部配置参数；或者，所述配置信息包括执行SL传输所需的部分配置参数，且所述终端设备自行确定执行SL传输所需的剩余部分配置参数。
在一些实施例中，所述发送模块610还用于向所述至少一个终端设备发送信令，所述信令包括以下至少之一：
第一激活信令，用于指示激活针对SL的复制传输；
第一去激活信令，用于指示去激活针对SL的复制传输；
第二激活信令，用于指示激活针对SL的复制传输所使用的RLC实体；
第二去激活信令，用于指示去激活针对SL的复制传输所使用的RLC实体；
第三激活信令，用于指示激活或使用分裂传输所使用的RLC实体，或者，指示激活或使用分裂传输。
在一些实施例中，所述发送模块610用于：
向第一终端设备和第二终端设备分别发送所述信令；
或者，
向第一终端设备发送所述信令，且所述第一终端设备将所述信令发送给第二终端设备；或者，向第二终端设备发送所述信令，且所述第二终端设备将所述信令发送给第一终端设备；
或者，
向第一终端设备发送所述信令，且所述第一终端设备不将所述信令发送给第二终端设备；或者，向第二终端设备发送所述信令，且所述第二终端设备不将所述信令发送给第一终端设备；
或者，
向第一终端设备和第二终端设备中的发送端发送所述信令；
其中，所述第一终端设备和所述第二终端设备是进行SL传输的一组终端设备。
请参考图7，其示出了本申请一个实施例提供的终端设备70的结构框图。例如，该终端设备70可用于执行上述终端设备侧的针对SL的复制传输方法。具体来讲：该终端设备70可以包括：处理器71、接收器72、发射器73、存储器74和总线75。
处理器71包括一个或者一个以上处理核心，处理器71通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器72和发射器73可以实现为一个收发器76，该收发器76可以是一块通信芯片。
存储器74通过总线75与处理器71相连。
存储器74可用于存储计算机程序，处理器71用于执行该计算机程序，以实现上述方法实施例中终端设备执行的各个步骤。
此外，存储器74可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：RAM(Random-Access Memory，随机存储器)和ROM(Read-Only Memory，只读存储器)、EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦写可编程只读存储器)、闪存或其他固态存储其技术，CD-ROM(Compact Disc Read-Only Memory，只读光盘)、DVD(Digital Video Disc，高密度数字视频光盘)或其他光学存储、磁带盒、磁带、磁盘存储或其他磁性存储设备。
在一些实施例中，所述处理器71用于获取配置信息，所述配置信息用于配置针对SL的复制传输；根据所述配置信息，与第二终端设备进行SL传输。
对于上述实施例中未详细说明的细节，可参见上文方法实施例中的介绍说明，此处不再赘述。
请参考图8，其示出了本申请一个实施例提供的网络设备80的结构框图。例如，该网络设备80可用于执行上述网络设备侧的针对SL的复制传输方法。具体来讲：该网络设备80可以包括：处理器81、接收器82、发射器83、存储器84和总线85。
处理器81包括一个或者一个以上处理核心，处理器81通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器82和发射器83可以实现为一个收发器86，该收发器86可以是一块通信芯片。
存储器84通过总线85与处理器81相连。
存储器84可用于存储计算机程序，处理器81用于执行该计算机程序，以实现上述方法实施例中网络设备执行的各个步骤。
此外，存储器84可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：RAM(Random-Access Memory，随机存储器)和ROM(Read-Only Memory，只读存储器)、EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦写可编程只读存储器)、闪存或其他固态存储其技术，CD-ROM(Compact Disc Read-Only Memory，只读光盘)、DVD(Digital Video Disc，高密度数字视频光盘)或其他光学存储、磁带盒、磁带、磁盘存储或其他磁性存储设备。
在一些实施例中，所述收发器86用于向至少一个终端设备发送配置信息，所述配置信息用于配置针对SL的复制传输。
对于上述实施例中未详细说明的细节，可参见上文方法实施例中的介绍说明，此处不再赘述。
本申请实施例还提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程 序用于被终端设备或网络设备的处理器执行，以实现上述针对SL的复制传输方法。
可选地，该计算机可读存储介质可以包括：ROM(Read-Only Memory，只读存储器)、RAM(Random-Access Memory，随机存储器)、SSD(Solid State Drives，固态硬盘)或光盘等。其中，随机存取记忆体可以包括ReRAM(Resistance Random Access Memory，电阻式随机存取记忆体)和DRAM(Dynamic Random Access Memory，动态随机存取存储器)。
本申请实施例还提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端设备或网络设备上运行时，用于实现上述针对SL的复制传输方法。
本申请实施例还提供了一种计算机程序产品或计算机程序，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，终端设备或网络设备的处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现上述针对SL的复制传输方法。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
另外，本文中描述的步骤编号，仅示例性示出了步骤间的一种可能的执行先后顺序，在一些其它实施例中，上述步骤也可以不按照编号顺序来执行，如两个不同编号的步骤同时执行，或者两个不同编号的步骤按照与图示相反的顺序执行，本申请实施例对此不作限定。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述仅为本申请的示例性实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (41)

  1. 一种针对侧行链路SL的复制传输方法，其特征在于，所述方法由第一终端设备执行，所述方法包括：
    获取配置信息，所述配置信息用于配置针对SL的复制传输；
    根据所述配置信息，与第二终端设备进行SL传输。
  2. 根据权利要求1所述的方法，其特征在于，所述配置信息符合以下情况中的至少之一：
    所述配置信息是针对所述第一终端设备和/或所述第二终端设备的；
    所述配置信息是针对所述第一终端设备和/或所述第二终端设备所使用的发送资源池的，所述发送资源池对应的配置信息是多个终端设备共用的，或，所述发送资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
    所述配置信息是针对所述第一终端设备和/或所述第二终端设备所使用的接收资源池的，所述接收资源池对应的配置信息是多个终端设备共用的，或，所述接收资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
    所述配置信息是针对数据无线承载DRB和/或信令无线承载SRB的。
  3. 根据权利要求1或2所述的方法，其特征在于，所述配置信息包括以下至少之一：采用2个无线链路控制RLC实体的复制传输所对应的配置信息、采用大于2个RLC实体的复制传输所对应的配置信息。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述配置信息包括以下至少之一：对应无线承载RB的至少一个RLC实体标识或逻辑信道LCH标识、主路径信息、复制传输是否激活的指示信息、辅路径信息、激活的RLC实体标识、激活的RLC实体组标识、允许使用的载波。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述配置信息包括以下至少之一：所述第一终端设备和/或所述第二终端设备的标识、RB标识。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述配置信息包括以下至少之一：分裂传输的使能标识、分裂传输的门限。
  7. 根据权利要求1至6任一项所述的方法，其特征在于，所述根据所述配置信息，与第二终端设备进行SL传输，包括以下至少之一：
    根据所述配置信息，确定是否执行针对SL的复制传输；
    根据所述配置信息，确定对DRB和/或SRB是否执行复制传输；
    根据所述配置信息，确定以下至少之一：执行复制传输的DRB、执行复制传输的SRB、执行复制传输的RLC实体、激活的RLC实体、执行复制传输的RLC实体组、激活的RLC实体组、执行复制传输的副本个数；
    根据所述配置信息，确定复制传输中的数据和数据副本分别发送至的RLC实体。
  8. 根据权利要求1至7任一项所述的方法，其特征在于，所述方法还包括：
    在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，确定是否执行针对SL的分裂传输；
    在确定执行针对SL的分裂传输的情况下，使用主路径和辅路径进行数据分裂传输。
  9. 根据权利要求1至8任一项所述的方法，其特征在于，所述方法还包括：
    在确定不执行针对SL的复制传输或针对SL的复制传输去激活或未配置针对SL的复制传输的情况下，执行单RLC实体传输。
  10. 根据权利要求1至9任一项所述的方法，其特征在于，所述方法还包括：
    向网络设备发送辅助信息，所述辅助信息用于所述网络设备确定以下至少之一：配置的SL的复制传输、激活和/或去激活的SL的复制传输、激活和/或去激活的RLC实体。
  11. 根据权利要求1至10任一项所述的方法，其特征在于，所述配置信息是由网络设备配置或预配置的。
  12. 根据权利要求11所述的方法，其特征在于，
    所述网络设备向所述第一终端设备和所述第二终端设备分别发送所述配置信息；
    或者，
    所述网络设备向所述第一终端设备发送所述配置信息，且所述第一终端设备将所述配置信息发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述配置信息，且所述第二终端设备将所述配置信息发送给所述第一终端设备；
    或者，
    所述网络设备向所述第一终端设备发送所述配置信息，且所述第一终端设备不将所述配置信息发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述配置信息，且所述第二终端设备不将所述配置信息发送给所述第一终端设备；
    或者，
    所述网络设备向所述第一终端设备和所述第二终端设备中的发送端发送所述配置信息。
  13. 根据权利要求1至10任一项所述的方法，其特征在于，所述配置信息是由目标终端设备配置的，所述目标终端设备为以下之一：所述第一终端设备、所述第二终端设备、所述第一终端设备和所述第二终端设备之外的另一第三终端设备。
  14. 根据权利要求13所述的方法，其特征在于，
    所述配置信息通过直连通信接口发送给所述第一终端设备和/或所述第二终端设备；
    或者，
    所述配置信息通过直连通信接口发送给所述第一终端设备和所述第二终端设备中的发送端；
    或者，
    所述配置信息通过网络设备发送给所述第一终端设备和/或所述第二终端设备；
    或者，
    所述配置信息通过网络设备发送给所述第一终端设备和所述第二终端设备中的发送端。
  15. 根据权利要求11至14任一项所述的方法，其特征在于，
    所述配置信息包括执行所述SL传输所需的全部配置参数；
    或者，
    所述配置信息包括执行所述SL传输所需的部分配置参数，且所述第一终端设备自行确定执行所述SL传输所需的剩余部分配置参数。
  16. 根据权利要求1至15任一项所述的方法，其特征在于，所述方法还包括以下至少之一：
    接收来自网络设备的第一指示信息，所述第一指示信息用于指示是否允许终端设备自行确定针对SL的复制传输的配置参数；
    接收来自网络设备的第二指示信息，所述第二指示信息用于指示是否允许终端设备自行确定激活或去激活针对SL的复制传输；
    接收来自网络设备的第三指示信息，所述第三指示信息用于指示是否允许终端设备自行确定激活或去激活针对SL的复制传输的RLC实体。
  17. 根据权利要求1至16任一项所述的方法，其特征在于，所述方法还包括以下至少之一：
    获取第一激活信令，所述第一激活信令用于指示激活针对SL的复制传输；
    获取第一去激活信令，所述第一去激活信令用于指示去激活针对SL的复制传输；
    获取第二激活信令，所述第二激活信令用于指示激活针对SL的复制传输所使用的RLC实体；
    获取第二去激活信令，所述第二去激活信令用于指示去激活针对SL的复制传输所使用的RLC实体；
    获取第三激活信令，所述第三激活信令用于指示激活或使用分裂传输所使用的RLC实体，或者，指示激活或使用分裂传输。
  18. 根据权利要求17所述的方法，其特征在于，所述信令是由网络设备配置或预配置的，所述信令包括所述第一激活信令、所述第一去激活信令、所述第二激活信令、所述第二去激活信令和所述第三激活信令中的至少一项。
  19. 根据权利要求18所述的方法，其特征在于，
    所述网络设备向所述第一终端设备和所述第二终端设备分别发送所述信令；
    或者，
    所述网络设备向所述第一终端设备发送所述信令，且所述第一终端设备将所述信令发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述信令，且所述第二终端设备将所述信令发送给所述第一终端设备；
    或者，
    所述网络设备向所述第一终端设备发送所述信令，且所述第一终端设备不将所述信令发送给所述第二终端设备；或者，所述网络设备向所述第二终端设备发送所述信令，且所述第二终端设备不将所述信令发送给所述第一终端设备；
    或者，
    所述网络设备向所述第一终端设备和所述第二终端设备中的发送端发送所述信令。
  20. 根据权利要求17所述的方法，其特征在于，所述信令是由目标终端设备配置的，所述信令包括所述第一激活信令、所述第一去激活信令、所述第二激活信令、所述第二去激活信令和所述第三激活信令中 的至少一项，所述目标终端设备为以下之一：所述第一终端设备、所述第二终端设备、所述第一终端设备和所述第二终端设备之外的另一第三终端设备。
  21. 根据权利要求20所述的方法，其特征在于，
    所述信令通过直连通信接口发送给所述第一终端设备和/或所述第二终端设备；
    或者，
    所述信令通过直连通信接口发送给所述第一终端设备和所述第二终端设备中的发送端；
    或者，
    所述信令通过网络设备发送给所述第一终端设备和/或所述第二终端设备；
    或者，
    所述信令通过网络设备发送给所述第一终端设备和所述第二终端设备中的发送端。
  22. 一种针对侧行链路SL的复制传输方法，其特征在于，所述方法由网络设备执行，所述方法包括：
    向至少一个终端设备发送配置信息，所述配置信息用于配置针对SL的复制传输。
  23. 根据权利要求22所述的方法，其特征在于，所述配置信息符合以下情况中的至少之一：
    所述配置信息是针对第一终端设备和/或第二终端设备的；
    所述配置信息是针对第一终端设备和/或第二终端设备所使用的发送资源池的，所述发送资源池对应的配置信息是多个终端设备共用的，或，所述发送资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
    所述配置信息是针对所述第一终端设备和/或所述第二终端设备所使用的接收资源池的，所述接收资源池对应的配置信息是多个终端设备共用的，或，所述接收资源池对应的配置信息是所述第一终端设备和/或所述第二终端设备专用的；
    所述配置信息是针对数据无线承载DRB和/或信令无线承载SRB的。
  24. 根据权利要求22或23所述的方法，其特征在于，所述配置信息包括以下至少之一：采用2个无线链路控制RLC实体的复制传输所对应的配置信息、采用大于2个RLC实体的复制传输所对应的配置信息。
  25. 根据权利要求22至24任一项所述的方法，其特征在于，所述配置信息包括以下至少之一：对应无线承载RB的至少一个RLC实体标识或逻辑信道LCH标识、主路径信息、复制传输是否激活的指示信息、辅路径信息、激活的RLC实体标识、激活的RLC实体组标识、允许使用的载波。
  26. 根据权利要求22至25任一项所述的方法，其特征在于，所述配置信息包括以下至少之一：所述第一终端设备和/或所述第二终端设备的标识、RB标识。
  27. 根据权利要求22至26任一项所述的方法，其特征在于，所述配置信息包括以下至少之一：分裂传输的使能标识、分裂传输的门限。
  28. 根据权利要求22至27任一项所述的方法，其特征在于，所述配置信息用于确定以下至少之一：
    是否执行针对SL的复制传输；
    对DRB和/或SRB是否执行复制传输；
    执行复制传输的DRB；
    执行复制传输的SRB；
    执行复制传输的RLC实体；
    激活的RLC实体；
    执行复制传输的RLC实体组；
    激活的RLC实体组；
    执行复制传输的副本个数；
    复制传输中的数据和数据副本分别发送至的RLC实体。
  29. 根据权利要求22至28任一项所述的方法，其特征在于，所述向至少一个终端设备发送配置信息，包括：
    向第一终端设备和第二终端设备分别发送所述配置信息；
    或者，
    向第一终端设备发送所述配置信息，且所述第一终端设备将所述配置信息发送给第二终端设备；或者，向第二终端设备发送所述配置信息，且所述第二终端设备将所述配置信息发送给第一终端设备；
    或者，
    向第一终端设备发送所述配置信息，且所述第一终端设备不将所述配置信息发送给第二终端设备；或者，向第二终端设备发送所述配置信息，且所述第二终端设备不将所述配置信息发送给第一终端设备；
    或者，
    向第一终端设备和第二终端设备中的发送端发送所述配置信息；
    其中，所述第一终端设备和所述第二终端设备是进行SL传输的一组终端设备。
  30. 根据权利要求22至29任一项所述的方法，其特征在于，所述方法还包括以下至少之一：
    向所述终端设备发送第一指示信息，所述第一指示信息用于指示是否允许所述终端设备自行确定针对SL的复制传输的配置参数；
    向所述终端设备发送第二指示信息，所述第二指示信息用于指示是否允许所述终端设备自行确定激活或去激活针对SL的复制传输；
    向所述终端设备发送第三指示信息，所述第三指示信息用于指示是否允许所述终端设备自行确定激活或去激活针对SL的复制传输的RLC实体。
  31. 根据权利要求22至30任一项所述的方法，其特征在于，所述方法还包括：
    接收所述终端设备发送的辅助信息；
    根据所述辅助信息执行以下至少之一：确定配置的SL的复制传输、确定激活和/或去激活的SL的复制传输、确定激活和/或去激活的RLC实体。
  32. 根据权利要求22至31任一项所述的方法，其特征在于，
    所述配置信息包括执行SL传输所需的全部配置参数；
    或者，
    所述配置信息包括执行SL传输所需的部分配置参数，且所述终端设备自行确定执行SL传输所需的剩余部分配置参数。
  33. 根据权利要求22至32任一项所述的方法，其特征在于，所述方法还包括：
    向所述至少一个终端设备发送信令，所述信令包括以下至少之一：
    第一激活信令，用于指示激活针对SL的复制传输；
    第一去激活信令，用于指示去激活针对SL的复制传输；
    第二激活信令，用于指示激活针对SL的复制传输所使用的RLC实体；
    第二去激活信令，用于指示去激活针对SL的复制传输所使用的RLC实体；
    第三激活信令，用于指示激活或使用分裂传输所使用的RLC实体，或者，指示激活或使用分裂传输。
  34. 根据权利要求33所述的方法，其特征在于，所述向所述至少一个终端设备发送信令，包括：
    向第一终端设备和第二终端设备分别发送所述信令；
    或者，
    向第一终端设备发送所述信令，且所述第一终端设备将所述信令发送给第二终端设备；或者，向第二终端设备发送所述信令，且所述第二终端设备将所述信令发送给第一终端设备；
    或者，
    向第一终端设备发送所述信令，且所述第一终端设备不将所述信令发送给第二终端设备；或者，向第二终端设备发送所述信令，且所述第二终端设备不将所述信令发送给第一终端设备；
    或者，
    向第一终端设备和第二终端设备中的发送端发送所述信令；
    其中，所述第一终端设备和所述第二终端设备是进行SL传输的一组终端设备。
  35. 一种针对侧行链路SL的复制传输装置，其特征在于，所述装置包括：
    获取模块，用于获取配置信息，所述配置信息用于配置针对SL的复制传输；
    传输模块，用于根据所述配置信息，与第二终端设备进行SL传输。
  36. 一种针对侧行链路SL的复制传输装置，其特征在于，所述装置包括：
    发送模块，用于向至少一个终端设备发送配置信息，所述配置信息用于配置针对SL的复制传输。
  37. 一种终端设备，其特征在于，所述终端设备包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述计算机程序以实现如权利要求1至21任一项所述的方法。
  38. 一种网络设备，其特征在于，所述网络设备包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述计算机程序以实现如权利要求22至34任一项所述的方法。
  39. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序，所述计算机程序用于被处理器执行，以实现如权利要求1至21任一项所述的方法，或者实现如权利要求22至34任一项所述的方法。
  40. 一种芯片，其特征在于，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片运行时，用于实现如权利要求1至21任一项所述的方法，或者实现如权利要求22至34任一项所述的方法。
  41. 一种计算机程序产品或计算机程序，其特征在于，所述计算机程序产品或计算机程序包括计算机指 令，所述计算机指令存储在计算机可读存储介质中，处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现如权利要求1至21任一项所述的方法，或者实现如权利要求22至34任一项所述的方法。
PCT/CN2021/111574 2021-08-09 2021-08-09 针对sl的复制传输方法、装置、设备及存储介质 WO2023015413A1 (zh)

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