WO2023213285A1 - 由用户设备执行的方法及用户设备 - Google Patents

由用户设备执行的方法及用户设备 Download PDF

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Publication number
WO2023213285A1
WO2023213285A1 PCT/CN2023/092183 CN2023092183W WO2023213285A1 WO 2023213285 A1 WO2023213285 A1 WO 2023213285A1 CN 2023092183 W CN2023092183 W CN 2023092183W WO 2023213285 A1 WO2023213285 A1 WO 2023213285A1
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WIPO (PCT)
Prior art keywords
configuration
rlc
source
remote
relay
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PCT/CN2023/092183
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English (en)
French (fr)
Inventor
刘蕾
刘仁茂
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Sharp Corp
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Sharp Corp
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Priority to EP23799271.4A priority Critical patent/EP4521824A4/en
Priority to US18/861,933 priority patent/US20250294626A1/en
Publication of WO2023213285A1 publication Critical patent/WO2023213285A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to the field of wireless communication technology, and more specifically, the present invention relates to a method for user equipment to perform parameter configuration in a sideline communication relay architecture and the corresponding user equipment.
  • NR sidelink relaying sidelink communication relay
  • RP-210904 New Study Item on NR Sidelink Relaying The latest version of this work item can be found in the non-patent document: RP-212601 reivised WID NR sidelink relay.
  • One of the goals of this work item is to standardize sideline communication control plane processes, such as management of RRC connections, reception of system messages and reception of paging.
  • the goal of this work item is also to standardize the selection and reselection process for sideline communication relay UEs.
  • This invention discusses the configuration process of relevant parameters required by the source-side UE and the target-side UE for data and signaling transmission through the relay UE.
  • the method performed by the user equipment UE includes: establishing a PC5-RRC connection between the first user equipment UE1 and the second user equipment UE2, or between the UE1 and the third user equipment UE3.
  • the PC5 radio resource control PC5-RRC connection between Configuration of the link control SL-RLC; initiating the configuration of the wireless link control SL-RLC for the first side-link communication; initiating the configuration of the second side-link communication Radio link control SL-RLC configuration; and initiating the configuration of the remote UE local ID, where if the UE1 is the source UE, the UE2 is the relay UE, and the UE3 is the target side UE; if the UE1 is a target side UE, then the UE2 is a relay UE, and the UE3 is a source side UE; if the UE1 is a relay UE, then the UE2 is a source side UE, and the UE3 For the target side UE, the
  • the side-link communication radio link control is used to carry SL-SRB3 between the source side UE and the target side UE, and the SL-SRB3 is used to carry PC5 Radio Resource Control PC5-RRC message.
  • the SL-RLC configures wireless link control RLC configuration and/or multimedia access control MAC configuration information, wherein the RLC configuration includes a logical channel identifier and a sequence number length,
  • the MAC configuration information includes priorities and logical channel groups.
  • the configuration of the SL-RLC is specified by the protocol; or is default; or is configured by the UE1, the UE2, or the UE3.
  • the logical channel identifier is a fixed value specified by the protocol, and the logical channel group is a fixed value specified by the protocol. Value; if the SL-RLC is default, the logical channel identifier is a default value, and the logical channel group is a default value.
  • the SL-RLC configuration specified by the protocol is used for at least one of the following messages; if the SL-RLC configuration is By default, the default SL-RLC configuration is used for at least one of the following messages: the first side-link communication RRC reconfiguration RRCReconfigurationSidelink message; the first since the PC5-RRC connection is established. A side-link communication RRC reconfiguration RRCReconfigurationSidelink message; and a PC-RRC message before the first side-link communication RRC reconfiguration RRCReconfigurationSidelink message since the PC5-RRC connection was established.
  • the method performed by user equipment UE includes: the first user equipment UE1 configures the remote UE local identity remote UE local ID for the second user equipment UE2 and the third user equipment UE3; and the UE1 Receive the configuration completion message sent by the UE2, where if the UE1 is the source UE, the UE2 is the relay UE, and the UE3 is the destination UE.
  • the UE1 sends a configuration message to the UE2 and the UE3 respectively to configure the remote UE local identifier remote UE local ID
  • the configuration message carries at least the following information: One: the remote UE local ID of the source side UE and/or the remote UE local ID information of the target side UE; the source layer two identification Source L2 ID of the source side UE; the source layer of the target side UE The second identifier Source L2 ID; and the source layer two identifier Source L2 ID of the relay UE.
  • the UE1 when at least one of the following conditions is met, the UE1 considers the remote UE local ID configuration and/or the remote UE local ID configuration of the source side UE in the corresponding configuration message.
  • the remote UE local ID configuration of the target side UE needs to be applied, and the at least one condition is: the side-link communication RRC reconfiguration failure RRCReconfigurationFailureSidelink message sent by the UE3 has not been received; and the side-link communication RRC sent by the UE3 has been received Reconfiguration completes the RRCReconfigurationCompleteSidelink message, or when at least one of the following conditions is met, the UE1 continues to use the remote UE local ID of the source side UE and/or the remote UE local ID of the target side UE before the corresponding configuration message.
  • the at least one condition is: the side-link communication RRC reconfiguration failure RRCReconfigurationFailureSidelink message sent by the UE3 has been received; the side-link communication RRC reconfiguration complete RRCReconfigurationCompleteSidelink message sent by the UE3 has not been received; and corresponding to The timer of the UE3 for monitoring whether it responds to the sidelink communication RRC reconfiguration RRCReconfigurationSidelink message is running.
  • a user equipment includes: a processor; and a memory storing instructions; wherein the instructions execute the steps according to the first aspect and the second aspect when executed by the processor. Any of the methods described.
  • the parameters required for L2U2U data and signaling transmission can be correctly configured for the relay UE and the remote UE, thereby realizing normal transmission of data and signaling.
  • Figure 1 is a schematic diagram showing UE-to-UE relay.
  • FIG. 2 is a schematic diagram illustrating the control plane protocol stacks of a source-side UE, a relay UE, and a target-side UE of a U2N sidelink communication layer two (L2) relay architecture.
  • L2N sidelink communication layer two
  • FIG. 3 is a flowchart showing the basic process of the method performed by the user equipment UE in Embodiment 1 of the present invention.
  • FIG. 4 is a flowchart showing the basic process of the method performed by the user equipment UE in Embodiment 2 of the present invention.
  • Figure 5 is a schematic structural block diagram of the user equipment UE involved in the present invention.
  • UE User Equipment user equipment
  • MAC CE MAC control element
  • RLC Radio Link Control wireless link control
  • SDAP Service Data Adaptation Protocol Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol packet data convergence protocol
  • RRC Radio Resource Control Radio Resource Control
  • RRC_IDLE RRC idle state
  • RAN Radio Access Network, wireless access layer
  • SCI Sidelink Control Information, side communication control information
  • MIB Master Information Block, master information block
  • New Radio new radio
  • SIB System Information Block, system information block
  • NG-RAN NG Radio Access Network, a new generation of wireless access network
  • DCI Downlink Control Information, downlink control information
  • ADAPT Adaptation layer, side communication adaptation layer
  • PHY physical layer, physical layer
  • RB radio bearer, wireless bearer
  • DRB Data Radio Bearer, data wireless bearer
  • SRB Signalling Radio Bearer, signaling wireless bearer
  • ProSe Proximity based Services: Proximity services
  • V2X Vehicle-to-Everything, vehicles to everything
  • NAS Non-Access-Stratum, non-access layer
  • PC5-S PC5 signaling, PC5 signaling
  • SRAP Sidelink Relay Adaptation Protocol, sidelink communication relay adaptation protocol
  • SL-SRB Sidelink Signalling Radio Bearer, sidelink communication signaling wireless bearer
  • U2U UE-to-UE, UE to UE
  • RSRP Reference Signal Received Power reference signal received power
  • SL-RSRP sidelink RSRP, sidelink communication reference signal received power
  • SD-RSRP sidelink discovery RSRP, sidelink communication discovery message reference signal received power
  • the network can be a long-term evolution LTE network, a new radio access technology (New RAT, NR) network, an enhanced long-term evolution eLTE network, or a subsequent evolved version of 3GPP. other networks defined in .
  • New RAT new radio access technology
  • eLTE enhanced long-term evolution eLTE network
  • the user equipment UE may refer to the NR Sidelink-supporting device described in the background art.
  • NR equipment with relay function can also refer to NR equipment that supports NR sidelink relay architecture, or other types of NR equipment or LTE equipment.
  • the source-side UE and the target-side UE may refer to two UEs connected to each other through Relay UE in the UE-to-UE relay architecture. One of them is the source-side UE, and the other is the target-side UE.
  • the source UE (source UE) may also be called an initiation UE (initiation UE), and the target UE (target UE) may also be called a destination UE (destination UE).
  • Relay UE For U2U scenarios, "Relay UE”, “U2U Relay UE” and “L2 U2U Relay UE” can be used interchangeably.
  • “Remote UE”, “U2U Remote UE” and “L2 U2U Remote UE” can be used interchangeably.
  • “source UE”, “source remote UE”, “U2U source UE”, “U2U source remote UE”, “L2 U2U source UE” and “L2 U2U source remote UE” can be used interchangeably.
  • target UE “target remote UE”, “U2U target UE”, “U2U target remote UE”, “L2 U2U target remote UE”, and “L2 U2U target remote UE” can be used interchangeably.
  • sidelink, SL and PC5 can be used interchangeably.
  • “Feedback”, “report”, “escalate”, “send”, and “notify” can be used interchangeably.
  • “Use”, “enable”, “adopt”, “apply”, “enable”, “activate”, “implement”, etc. may be used interchangeably.
  • upper layer may refer to ProSe layer, or V2X layer, or NAS layer, or PC5-S protocol layer.
  • ProSe layer, V2X layer, NAS layer and PC5-S protocol layer can be used interchangeably.
  • RLC channel, RLC entity and RLC bearer can be used interchangeably.
  • these names can be preceded by the qualification "Relay” and/or "PC5 Relay”.
  • SL-RLC refers to the PC5 RLC bearer or PC5 RLC channel used to carry data and signaling transmission between the source side UE and the target side UE.
  • SL-RLC can be between the source side UE and the Relay UE and/or in the Relay UE and the target side UE.
  • the PC5 interface is the interface for control plane and user plane Sidelink communication between UE and UE.
  • Sidelink unicast the PC5-RRC connection is between a source layer 2 ID and a destination layer 2 ID. AS layer logical connection.
  • a PC5 unicast link is established, a PC5-RRC connection will be established.
  • SL-SRB is used to carry PC5-S messages and PC5-RRC messages.
  • SL-SRB0 is used to carry PC5-S messages before PC5-S security is established
  • SL-SRB1 is used to carry PC5-S messages of the PC5-S security establishment process
  • SL-SRB2 is used to carry PC5-S messages after PC5-S security is established.
  • PC5-S message SL-SRB3 is used to carry PC5-RRC message.
  • the UE-to-UE relay is shown in Figure 1.
  • the left and right sides are remote UEs and the middle is the relay UE.
  • the remote UE and the relay UE are connected through the PC5 interface respectively. Because the distance between the two remote UEs is long or the communication environment is poor, the relay UE needs to relay and forward the signaling and data between them.
  • UE-to-UE relay scenarios include:
  • both remote UEs i.e., source side UE and target side UE
  • the relay UE are within the coverage area;
  • both remote UEs i.e., source side UE and target side UE
  • relay UE are outside coverage
  • Partial coverage Among the two remote UEs and the relay UE, at least one UE is within the coverage range, and at least one UE is outside the coverage range.
  • two Remote UEs i.e., source side UE and target side UE
  • PC5-RRC connections with Relay UE respectively.
  • a PC5-RRC connection will also be established.
  • Two Remote UEs i.e., source side UE and target side UE
  • the control plane protocol stacks of the source side UE, Relay UE and target side UE are shown in Figure 2.
  • PC5 RLC channel refers to the RLC channel used for PC5 interface communication.
  • the PC5 relay RLC channel between the source side UE and the relay UE when the source side UE is connected to the target side UE through Relay UE, the PC5 relay RLC channel between the source side UE and the relay UE, and the PC5 relay RLC channel between the relay UE and the target side UE It can be used to carry data and signaling between the source side UE and the target side UE, that is, it can be used to carry SL-SRB and SL-DRB between the source side UE and the target side UE.
  • PC5-SRAP entity refers to the SRAP entity used for PC5 interface communication.
  • PC5-SRAP is the adaptation layer used for L2 U2U architecture.
  • the source UE communicates with the target UE through Relay UE.
  • the PC5-SRAP of the source side UE determines the uplink data/signaling according to the mapping relationship between the configured end-to-end bearer (that is, the bearer between the source side UE and the target side UE) to the PC5 relay RLC channel.
  • PC5-SRAP (Data sent from the source side UE to the target side UE) corresponding PC5 relay RLC channel, and determine the PC5 relay RLC channel corresponding to the downlink data from the target side UE and forwarded by the Relay UE.
  • PC5-SRAP entities corresponding to the source side UE and the target side UE respectively in the Relay UE.
  • PC5-SRAP also exists in the target side UE, and its function is the same as PC5-SRAP in the source side UE.
  • entity and layer can be used interchangeably, such as SRAP entity or SRAP layer.
  • This invention discusses the configuration process of relevant parameters required by the source-side UE and the target-side UE to transmit data and signaling through the relay UE in the L2 U2U scenario.
  • the parameters required for L2 U2U data and signaling transmission can be correctly configured, thereby realizing normal transmission of data and signaling.
  • step S101 the PC5-RRC connection between the source side UE (UE1) and the Relay UE (can be set to UE2) is established. or when the PC5-RRC connection between the source side UE (UE1) and the target side UE (can be set to UE3) is established (that is, the determination is "yes"), the first operation is performed.
  • the first operation includes at least one of the following operations:
  • remote UE local ID remote UE local identification
  • step S101 for the target side UE (can be set to UE1), as shown in Figure 3, in step S101, a PC5-RRC connection is established between the target side UE (UE1) and the Relay UE (can be set to UE2) or when the PC5-RRC connection between the target side UE (UE1) and the source side UE (can be set to UE3) is established (that is, the determination is "yes"), the first operation is performed.
  • step S101 for the Relay UE (can be set to UE1), as shown in Figure 3, in step S101, a PC5-RRC connection is established between the Relay UE (UE1) and the source UE (can be set to UE2) or when the PC5-RRC connection between the Relay UE (UE1) and the target side UE (which can be set to UE3) is established (that is, the determination is "yes"), the first operation is performed.
  • the first SL-RLC refers to the SL-RLC between the target side UE and the Relay UE
  • the second SL-RLC refers to the SL-RLC between the Relay UE and the source side UE.
  • SL-RLC is used to carry SL-SRB3 including but not limited to source-side UE and target-side UE.
  • the SL-RLC configuration includes but is not limited to RLC configuration and/or MAC configuration information.
  • the RLC configuration includes but is not limited to: logical channel identifier, sequence number length and other information.
  • MAC configuration information includes but is not limited to: priority, logical channel group and other information.
  • the UE initiates the configuration of the first SL-RLC, and/or the UE initiates the configuration of the second SL-RLC, through the RRCReconfigurationSidelink (sidelink communication RRC reconfiguration) message, or through other PC5-RRC messages.
  • the UE carries SL-RLC configuration.
  • the configuration of SL-RLC can be specified by the protocol, or default, or configured by the UE (it can be a source-side UE, a target-side UE, or a Relay UE).
  • the logical channel identifier can be a fixed value specified by the protocol, and the logical channel group can also be a fixed value specified by the protocol.
  • the SL-RLC configuration specified by the protocol may also be used for at least one of the following messages:
  • the logical channel identifier can be a default value (that is, it can be reconfigured later), and the logical channel group can also be a default value (that is, it can be reconfigured subsequently).
  • the default SL-RLC configuration may also be used for at least one of the following messages:
  • the remote UE local ID may include: the remote UE local ID of the source side UE, and/or the remote UE local ID of the target side UE.
  • the UE initiates the configuration of the remote UE local ID of the source side UE, and/or the UE initiates the configuration of the remote UE local ID of the target side UE, either through the RRCReconfigurationSidelink (Sidelink Communication RRC Reconfiguration) message, or via other PC5-RRC messages.
  • the message carries at least one of the following information: the remote UE local ID of the source side UE and/or the remote UE local ID information of the target side UE, the Source L2 ID and/or destination L2 ID of the source side UE, and the Source of the target side UE. L2 ID and/or destination L2 ID, Source L2 ID and/or destination L2 ID of Relay UE.
  • the RRC layer establishes the PC5-RRC connection through instructions from the upper layer. That is, after receiving instructions from the upper layer, the RRC layer will consider that the PC5-RRC connection is established. Therefore "PC5-RRC connection establishment is instructed by the upper layer” and "PC5-RRC connection establishment” can be used interchangeably.
  • this embodiment includes steps S201 and S202.
  • UE1 is the source side UE, then UE2 is the Relay UE, and UE3 is the target side UE; if UE1 is the target side UE, then UE2 is the Relay UE, and UE3 is the source side UE; if UE1 is the Relay UE, then UE2 is the source side UE , UE3 is the target side UE.
  • step S201 UE1 configures remote UE local ID for UE2 and UE3.
  • UE1 sends configuration messages (such as the first RRCReconfigurationSidelink message and the second RRCReconfigurationSidelink message) to UE2 and UE3 to configure remote UE local ID, and the message carries at least one of the following information: remote UE local of the source side UE ID and/or the remote UE local ID information of the target side UE, the Source L2 ID of the source side UE, the Source L2 ID of the target side UE, and the Source L2 ID of the Relay UE.
  • a timer can be started to monitor whether the peer UE replies with a response message. If the timer expires and the peer UE does not reply with a response, the link is considered abnormal and the PC5-RRC connection with the peer UE is released.
  • the first RRCReconfigurationSidelink message is the RRCReconfigurationSidelink message sent by UE1 to UE2, and the second RRCReconfigurationSidelink message is the RRCReconfigurationSidelink message sent by UE1 to UE3.
  • step S202 UE1 receives the configuration completion message sent by UE2 (for example RRCReconfigurationCompleteSidelink (sidelink communication RRC reconfiguration complete) message).
  • UE2 for example RRCReconfigurationCompleteSidelink (sidelink communication RRC reconfiguration complete) message.
  • UE1 considers the remote UE local ID configuration of the source side UE and/or the remote UE local ID configuration of the target side UE in the corresponding (corresponding) RRCReconfigurationSidelink message (i.e., the first RRCReconfigurationSidelink message). Need to be applied:
  • UE1 continues to use the remote UE local ID of the source side UE and/or the remote UE local ID of the target side UE before the corresponding (corresponding) RRCReconfigurationSidelink message (i.e., the first RRCReconfigurationSidelink message):
  • the remote UE local ID of the source side UE before the RRCReconfigurationSidelink message and /Or the remote UE local ID of the target side UE can be the default value.
  • step S202 may also include UE1 receiving the RRCReconfigurationFailureSidelink message sent by UE2. Then UE1 continues to use the remote UE local ID of the source side UE and/or the remote UE local ID of the target side UE before the RRCReconfigurationSidelink message (i.e. the first RRCReconfigurationSidelink message), and at the same time sends a new second RRCReconfigurationSidelink message to UE3, carrying the second RRCReconfigurationSidelink The remote UE local ID of the source side UE and/or the remote UE local ID of the target side UE before the message.
  • Step S202 can also be transformed into UE1 receiving the RRCReconfigurationCompleteSidelink message sent by UE3, or receiving the RRCReconfigurationFailureSidelink message from UE3.
  • UE1 receiving the RRCReconfigurationCompleteSidelink message sent by UE3, or receiving the RRCReconfigurationFailureSidelink message from UE3.
  • UE2 and/or UE3 may send a PC5-RRC message (such as but not limited to: RemoteUELocalIdRequest remote UE local identity request message) to UE1 to request configuration of remote UE local ID.
  • PC5-RRC message such as but not limited to: RemoteUELocalIdRequest remote UE local identity request message
  • UE1 configures remote UE local ID for UE2 and UE3, and executes step S201.
  • the remote UE local ID in this invention is only used as an example.
  • Other parameters that require the source side UE, Relay UE and target side UE to be consistent, equal or affect each other are also applicable to the above.
  • FIG. 5 is a schematic structural block diagram of the user equipment UE involved in the present invention.
  • the user equipment UE700 includes a processor 701 and a memory 702.
  • the processor 701 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 702 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory.
  • Memory 702 stores program instructions. When this instruction is executed by the processor 701, it can execute the above method executed by the user equipment as described in detail in the present invention.
  • the program running on the device according to the present invention may be a program that causes the computer to implement the functions of the embodiments of the present invention by controlling a central processing unit (CPU).
  • the program or information processed by the program may be temporarily stored in volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory systems.
  • Programs for realizing the functions of each embodiment of the present invention can be recorded on a computer-readable recording medium.
  • Corresponding functions can be realized by causing the computer system to read programs recorded on the recording medium and execute these programs.
  • the so-called “computer system” here may be a computer system embedded in the device, which may include an operating system or hardware (such as peripheral devices).
  • “Computer readable “Recording medium” may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium for short-term dynamic storage of programs, or any other recording medium readable by a computer.
  • circuits eg, single-chip or multi-chip integrated circuits.
  • Circuitry designed to perform the functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • a general-purpose processor can be a microprocessor or any existing processor, controller, microcontroller, or state machine.
  • the above circuit may be a digital circuit or an analog circuit.
  • the present invention is not limited to the above-described embodiment. Although various examples of the embodiments have been described, the invention is not limited thereto.
  • Fixed or non-mobile electronic equipment installed indoors or outdoors can be used as terminal equipment or communication equipment, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

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Abstract

本发明提供一种由用户设备执行的方法及用户设备，所述方法包括：在UE1与UE2之间的PC5-RRC连接建立、或者UE1与UE3之间的PC5无线资源控制PC5-RRC连接建立的情况下，UE1执行包括如下操作的至少一种：应用第一SL-RLC的配置；应用第二SL-RLC的配置；发起对第一SL-RLC的配置；发起对第二SL-RLC的配置；以及发起对remote UE local ID的配置，其中，如果UE1为源侧UE，则UE2为中继UE，UE3为目标侧UE；如果UE1为目标侧UE，则UE2为中继UE，UE3为源侧UE；如果UE1为中继UE，则UE2为源侧UE，UE3为目标侧UE。

Description

由用户设备执行的方法及用户设备 技术领域
本发明涉及无线通信技术领域，更具体地，本发明涉及由用户设备执行侧行通信中继架构中参数配置的方法以及相应的用户设备。
背景技术
2020年3月，RAN#91次全会上，针对版本17的NR sidelink relaying(侧行通信中继)的工作项目被提出(参见非专利文献：RP-210904 New Study Item on NR Sidelink Relaying)，并获批准。该工作项目的最新版本参见非专利文献：RP-212601 reivised WID NR sidelink relay。该工作项目的目标之一是标准化侧行通信控制面流程，例如RRC连接的管理、系统消息的接收和寻呼的接收。该工作项目的目标还包括标准化侧行通信中继UE的选择和重选流程。
2021年12月，RAN#94次全会上，针对版本18的NR sidelink relay enhancements(侧行通信中继增强)的工作项目被提出(参见非专利文献：RP-213585 New WID on NR sidelink relay enhancements)，并获批准。该工作项目的目标之一标准化U2U(UE-to-UE)Relay的控制面流程。
本发明讨论源侧UE和目标侧UE通过中继UE进行数据和信令传输所需要的相关参数的配置流程。
发明内容
根据本发明的第一方面的由用户设备UE执行的方法，包括：在第一用户设备UE1与第二用户设备UE2之间的PC5-RRC连接建立、或者所述UE1与第三用户设备UE3之间的PC5无线资源控制PC5-RRC连接建立的情况下，所述UE1执行包括如下操作的至少一种：应用第一侧行通信无线链路控制SL-RLC的配置；应用第二侧行通信无线链路控制SL-RLC的配置；发起对第一侧行通信无线链路控制SL-RLC的配置；发起对第二侧行通信 无线链路控制SL-RLC的配置；以及发起对远端UE局部标识remote UE local ID的配置，其中，如果所述UE1为源侧UE，则所述UE2为中继UE，所述UE3为目标侧UE；如果所述UE1为目标侧UE，则所述UE2为中继UE，所述UE3为源侧UE；如果所述UE1为中继UE，则所述UE2为源侧UE，所述UE3为目标侧UE，所述第一SL-RLC是指所述目标侧UE和所述中继UE之间的侧行通信无线链路控制SL-RLC，所述第二SL-RLC是指所述中继UE和所述源侧UE之间的侧行通信无线链路控制SL-RLC。
根据本发明的第一方面的所述方法，所述侧行通信无线链路控制用于承载所述源侧UE和所述目标侧UE之间的SL-SRB3，所述SL-SRB3用于承载PC5无线资源控制PC5-RRC消息。
根据本发明的第一方面的所述方法，所述SL-RLC配置无线链路控制RLC配置和/或多媒体接入控制MAC配置信息，其中，所述RLC配置中包括逻辑信道标识、序号长度，所述MAC配置信息包括优先级、逻辑信道组。
根据本发明的第一方面的所述方法，所述SL-RLC的配置是协议规定的；或者是默认的；或者是由所述UE1或所述UE2或所述UE3配置的。
根据本发明的第一方面的所述方法，若所述SL-RLC配置为协议规定的，则所述逻辑信道标识为协议规定的一个固定取值，所述逻辑信道组为协议规定的一个固定取值；若所述SL-RLC为默认的，则所述逻辑信道标识为一个默认取值，所述逻辑信道组为一个默认取值。
根据本发明的第一方面的所述方法，若所述SL-RLC配置为协议规定的，则是对于如下消息的至少一种采用协议规定的SL-RLC配置；若所述SL-RLC配置为默认的，则是对于如下消息的至少一种采用默认的SL-RLC配置，所述如下消息为：第一条侧行通信RRC重配置RRCReconfigurationSidelink消息；自从所述PC5-RRC连接建立后的第一条侧行通信RRC重配置RRCReconfigurationSidelink消息；以及自从所述PC5-RRC连接建立后，在第一条侧行通信RRC重配置RRCReconfigurationSidelink消息之前的PC-RRC消息。
根据本发明的第二方面的由用户设备UE执行的方法，包括：第一用户设备UE1为第二用户设备UE2和第三用户设备UE3配置远端UE局部标识remote UE local ID；以及所述UE1接收所述UE2发送的配置完成消息，其中，如果所述UE1为源侧UE，则所述UE2为中继UE，所述UE3为目 标侧UE；如果所述UE1为目标侧UE，则所述UE2为中继UE，所述UE3为源侧UE；如果所述UE1为中继UE，则所述UE2为源侧UE，所述UE3为目标侧UE。
根据本发明的第二方面的所述方法，所述UE1分别发送配置消息给所述UE2和所述UE3，以配置远端UE局部标识remote UE local ID，所述配置消息中携带如下信息的至少一种：所述源侧UE的remote UE local ID和/或所述目标侧UE的remote UE local ID信息；所述源侧UE的源层二标识Source L2 ID；所述目标侧UE的源层二标识Source L2 ID；以及所述中继UE的源层二标识Source L2 ID。
根据本发明的第二方面的所述方法，在满足如下至少一条件的情况下，所述UE1认为对应的所述配置消息中的所述源侧UE的remote UE local ID配置和/或所述目标侧UE的remote UE local ID配置需要应用，所述至少一条件为：没有收到所述UE3发送的侧行通信RRC重配置失败RRCReconfigurationFailureSidelink消息；以及已经收到所述UE3发送的侧行通信RRC重配置完成RRCReconfigurationCompleteSidelink消息，或者在满足如下至少一条件的情况下，所述UE1继续使用对应的所述配置消息之前的所述源侧UE的remote UE local ID和/或所述目标侧UE的remote UE local ID，所述至少一条件为：已经收到所述UE3发送的侧行通信RRC重配置失败RRCReconfigurationFailureSidelink消息；没有收到所述UE3发送的侧行通信RRC重配置完成RRCReconfigurationCompleteSidelink消息；以及对应于所述UE3的用于监控是否对侧行通信RRC重配置RRCReconfigurationSidelink消息回复了响应的定时器在运行。
根据本发明的第三方面的用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行根据所述第一方面、所述第二方面的任意所述方法。
本发明的有益效果
通过本发明，可以为中继UE和远端UE正确配置L2U2U数据和信令传输所需要的参数，从而实现数据和信令的正常传输。
附图说明
图1是示出UE-to-UE中继的示意图。
图2是示出U2N侧行链路通信层二(L2)中继架构的源侧UE、中继UE和目标侧UE的控制面协议栈的示意图。
图3是示出本发明的实施例1中由用户设备UE执行的方法的基本过程的流程图。
图4是示出本发明的实施例2中由用户设备UE执行的方法的基本过程的流程图。
图5是本发明涉及的用户设备UE的简要结构框图。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
下面描述本发明涉及的部分术语，术语的具体含义见3GPP最新标准规范，
UE：User Equipment用户设备
NR：New Radio新一代无线技术
MAC：Medium Access Control多媒体接入控制
MAC CE：MAC control element MAC控制元素
RLC：Radio Link Control无线链路控制
SDAP：Service Data Adaptation Protocol服务数据适配协议
PDCP：Packet Data Convergence Protocol分组数据汇聚协议
RRC：Radio Resource Control无线资源控制
RRC_CONNECTED：RRC连接态
RRC_INACTIVE：RRC非激活态
RRC_IDLE：RRC空闲态
RAN：Radio Access Network，无线接入层
Sidelink：侧行通信
SCI：Sidelink Control Information，侧行通信控制信息
AS：Access Stratum，接入层
IE：Information Element，信息元素
CE：Control Element，控制元素
MIB：Master Information Block，主信息块
NR：New Radio，新无线电
SIB：System Information Block，系统信息块
NG-RAN：NG Radio Access Network，新一代无线接入网络
DCI：Downlink Control Information，下行控制信息
ADAPT：Adaptation layer，侧行通信适配层
PHY：physical layer，物理层
RB：radio bearer，无线承载
DRB：Data Radio Bearer，数据无线承载
SRB：Signalling Radio Bearer，信令无线承载
eDRX：Extended DRX扩展的不连续接收
Uu：空口
ProSe：Proximity based Services：近距离服务
V2X：Vehicle-to-Everything，车到万物
NAS：Non-Access-Stratum，非接入层
PC5-S：PC5 signalling，PC5信令
SRAP：Sidelink Relay Adaptation Protocol，侧行通信中继适配协议
SL-SRB：Sidelink Signalling Radio Bearer，侧行通信信令无线承载
U2U：UE-to-UE，UE到UE
L2：Layer 2，层二架构
RSRP：Reference Signal Received Power参考信号接收功率
SL-RSRP：sidelink RSRP，侧行通信参考信号接收功率
SD-RSRP：sidelink discovery RSRP，侧行通信发现消息参考信号接收功率
本发明中，网络、基站和RAN可互换使用，所述网络可以是长期演进LTE网络、新无线访问技术(New RAT，NR)网络、增强的长期演进eLTE网络，也可以是3GPP后续演进版本中定义的其他网络。
本发明中，用户设备UE可以指背景技术中所述的支持NR Sidelink中 继功能的NR设备，也可以指支持NR sidelink中继架构的NR设备，也可以指其他类型的NR设备或者LTE设备。源侧UE和目标侧UE可以指UE到UE中继架构中通过Relay UE互相连接的两个UE，其中一者为源侧UE，则另一者为目标侧UE。源侧UE(source UE)也可以称为发起UE(initiation UE)，目标侧UE(target UE)也可以称为目的UE(destination UE)。
对于U2U场景，“Relay UE”，“U2U Relay UE”和“L2 U2U Relay UE”可以互换使用。“Remote UE”，“U2U Remote UE”和“L2 U2U Remote UE”可以互换使用。“source UE”，“source remote UE”，“U2U source UE”，“U2U source remote UE”，“L2 U2U source UE”和“L2 U2U source remote UE”可以互换使用。“target UE”，“target remote UE”，“U2U target UE”，“U2U target remote UE”，“L2 U2U target UE”，和“L2 U2U target remote UE”可以互换使用。
本发明中，sidelink、SL和PC5可以互换使用。“反馈”，“报告”，“上报”，“发送”，“通知”可以互换使用。“使用”，“启用”，“采用”，“应用”，“使能”，“激活”，“实现”等可以互换使用。
本发明中，upper layer可以指ProSe layer，或者V2X layer，或者NAS layer，或者PC5-S protocol layer。本发明中ProSe layer，V2X layer，NAS layer和PC5-S protocol layer可以互换使用。
本发明中，RLC信道(channel)、RLC实体和RLC承载(bearer)可以互换使用。可选地，这些名称前面还可以增加“Relay”和/或“PC5 Relay”的限定。SL-RLC指用于承载源侧UE和目标侧UE之间数据和信令传输的PC5 RLC bearer或者PC5 RLC信道，SL-RLC可以在源侧UE和Relay UE之间的和/或在Relay UE和目标侧UE之间。
需要说明的是，在本说明书中，用“和”、“或”、“和/或”连接的两者可能表示在不同应用场景下对同一意旨的不同表述方法，二者之间可能存在包含与被包含的关系，未必是指完全不同的内容。
以下，对本发明的相关技术给出说明。
PC5接口是UE和UE之间进行控制面和用户面Sidelink通信的接口。对于Sidelink单播，PC5-RRC连接是一对源层二ID和目标层二ID之间的 AS层逻辑连接。一个PC5单播链路建立就会对应有一个PC5-RRC连接建立。
在单播PC5-RRC连接中，SL-SRB用于承载PC5-S消息和PC5-RRC消息。SL-SRB0用于承载在PC5-S安全建立之前的PC5-S消息，SL-SRB1用于承载PC5-S安全建立流程的PC5-S消息，SL-SRB2用于承载PC5-S安全建立后的PC5-S消息，SL-SRB3用于承载PC5-RRC消息。
UE-to-UE中继如图1所示，左右两侧为远端UE，中间为中继UE。远端UE和中继UE之间分别通过PC5接口连接。由于两个远端UE距离较远或者通信环境不佳，需要中继UE对两者间的信令和数据进行中继转发。
UE-to-UE中继的场景包含：
1)覆盖范围内：两个远端UE(即源侧UE和目标侧UE)和中继UE都在覆盖范围内；
2)覆盖范围外：两个远端UE(即源侧UE和目标侧UE)和中继UE都在覆盖范围外；
3)部分覆盖：两个远端UE和中继UE中，至少有一个UE在覆盖范围内，并且至少有一个UE在覆盖范围外。
对于NR sidelink L2 U2U中继架构，两个Remote UE(即源侧UE和目标侧UE)分别和Relay UE建立PC5-RRC连接，两个远端UE(即源侧UE和目标侧UE)之间也会建立PC5-RRC连接。两个Remote UE(即源侧UE和目标侧UE)通过Relay UE互相通信。
对于U2U侧行链路通信层二(L2)中继架构，源侧UE、Relay UE和目标侧UE的控制面协议栈如图2所示。
PC5 RLC信道是指用于PC5接口通信的RLC信道。在U2U架构中，源侧UE通过Relay UE和目标侧UE连接时，源侧UE和中继UE之间的PC5中继RLC信道，以及中继UE和目标侧UE之间的PC5中继RLC信道可以用来承载源侧UE和目标侧UE之间的数据和信令，即用来承载源侧UE和目标侧UE之间的SL-SRB和SL-DRB。
PC5-SRAP实体指用于PC5接口通信的SRAP实体，PC5-SRAP是用于L2 U2U架构的适配层。在L2 U2U架构中，源侧UE通过Relay UE与目标 侧UE进行连接时，源侧UE的PC5-SRAP根据配置的端到端承载(即源侧UE和目标侧UE之间的承载)到PC5中继RLC信道的映射关系，确定上行数据/信令(源侧UE发给目标侧UE的数据)对应的PC5中继RLC信道，以及确定来自目标侧UE并由Relay UE转发的下行数据对应的PC5中继RLC信道。在Relay UE中也存在分别对应于源侧UE和目标侧UE的PC5-SRAP实体。目标侧UE也存在PC5-SRAP，功能与源侧UE中的PC5-SRAP相同。在本文中实体与层的说法可以相互替换，例如SRAP entity或者SRAP layer。
本发明讨论L2 U2U场景中，源侧UE和目标侧UE通过中继UE进行数据和信令传输所需要的相关参数的配置流程。通过本发明，可以正确配置L2 U2U数据和信令传输所需要的参数，从而实现数据和信令的正常传输。
以下，详细描述本发明对于上述问题的若干实施例。
实施例1
可选地，对于源侧UE(可设为UE1)，如图3所示，在步骤S101中，在源侧UE(UE1)与Relay UE(可设为UE2)之间的PC5-RRC连接建立时或者源侧UE(UE1)与目标侧UE(可设为UE3)之间的PC5-RRC连接建立时(即，判定为“是”)，执行第一操作。第一操作包括如下操作的至少一种：
-应用第一SL-RLC的配置；
-应用第二SL-RLC的配置；
-发起对第一SL-RLC的配置；
-发起对第二SL-RLC的配置；
-发起对remote UE local ID(远端UE局部标识)的配置；
可选地，对于目标侧UE(可设为UE1)，如图3所示，在步骤S101中，在目标侧UE(UE1)与Relay UE(可设为UE2)之间的PC5-RRC连接建立时或者目标侧UE(UE1)与源侧UE(可设为UE3)之间的PC5-RRC连接建立时(即，判定为“是”)，执行第一操作。
可选地，对于Relay UE(可设为UE1)，如图3所示，在步骤S101中，在Relay UE(UE1)与源侧UE(可设为UE2)之间的PC5-RRC连接建立 时或者Relay UE(UE1)与目标侧UE(可设为UE3)之间的PC5-RRC连接建立时(即，判定为“是”)，执行第一操作。
其中第一SL-RLC指目标侧UE和Relay UE之间的SL-RLC，第二SL-RLC指RelayUE和源侧UE之间的SL-RLC。SL-RLC用于承载包含但不限于源侧UE和目标侧UE之间的SL-SRB3。
可选地，SL-RLC配置包括但不限于RLC配置和/或MAC配置信息。RLC配置中包含但不限于：逻辑信道标识，序号长度等信息。MAC配置信息包括但不限于：优先级，逻辑信道组等信息。
可选地，UE发起对第一SL-RLC配置，和/或UE发起对第二SL-RLC配置，可以通过RRCReconfigurationSidelink(侧行通信RRC重配置)消息，也可以通过其他PC5-RRC消息，消息中携带SL-RLC配置。
可选地，SL-RLC的配置可以是协议规定的(specifed)，或者默认的(default)，或者由UE配置的(可以是源侧UE，或目标侧UE，或Relay UE)。
可选地，当SL-RLC配置为协议规定的，则逻辑信道标识可以为协议规定的一个固定取值，逻辑信道组也可以为协议规定的一个固定取值。可选地，当SL-RLC配置为协议规定的，还可以是对于如下消息的至少一种采用协议规定的SL-RLC配置：
-第一条RRCReconfigurationSidelink消息；
-自从PC5-RRC连接建立后的第一条RRCReconfigurationSidelink消息；
-自从PC5-RRC连接建立后，在第一条RRCReconfigurationSidelink消息之前的PC-RRC消息。
可选地，当SL-RLC为默认值，则逻辑信道标识可以为一个默认取值(即后续可以被重配置)，逻辑信道组也可以为一个默认取值(即后续可以被重配置)。可选地，当SL-RLC为默认值，还可以是对于如下消息的至少一种采用默认的SL-RLC配置：
-第一条RRCReconfigurationSidelink消息；
-自从PC5-RRC连接建立后的第一条RRCReconfigurationSidelink消息；
-自从PC5-RRC连接建立后，在第一条RRCReconfigurationSidelink消息之前的PC-RRC消息。
其中remote UE local ID可以包含：源侧UE的remote UE local ID，和/或目标侧UE的remote UE local ID。可选地，UE发起对源侧UE的remote UE local ID的配置，和/或UE发起对目标侧UE的remote UE local ID的配置，可以通过RRCReconfigurationSidelink(侧行通信RRC重配置)消息，也可以通过其他PC5-RRC消息。消息中携带如下信息的至少一种：源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID信息，源侧UE的Source L2 ID和/或destination L2 ID，目标侧UE的Source L2 ID和/或destination L2 ID，Relay UE的Source L2 ID和/或destination L2 ID。
RRC层是通过上层的指示建立PC5-RRC连接的，即收到上层指示后RRC层会认为PC5-RRC连接建立。因此“PC5-RRC连接建立被上层指示”和“PC5-RRC连接建立”可以互换使用。
实施例2
基于实施例1，本实施例，如图4所示，包含步骤S201和S202。
如果UE1为源侧UE，则UE2为Relay UE，UE3为目标侧UE；如果UE1为目标侧UE，则UE2为Relay UE，UE3为源侧UE；如果UE1为Relay UE，则UE2为源侧UE，UE3为目标侧UE。
可选地，在步骤S201中，UE1为UE2和UE3配置remote UE local ID。
其中，可选地，UE1分别发送配置消息(例如第一RRCReconfigurationSidelink消息和第二RRCReconfigurationSidelink消息)给UE2和UE3配置remote UE local ID，消息中携带如下信息的至少一种：源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID信息，源侧UE的Source L2 ID，目标侧UE的Source L2 ID，Relay UE的Source L2 ID。当UE1发送配置消息，可以启动一个定时器用于监控对端UE是否回复响应消息，如果定时器超时对端还未回复响应则认为链路异常，释放和对端UE之间的PC5-RRC连接。
第一RRCReconfigurationSidelink消息为UE1发送给UE2的RRCReconfigurationSidelink消息，第二RRCReconfigurationSidelink消息为UE1发送给UE3的RRCReconfigurationSidelink消息。
可选地，在步骤S202中，UE1接收UE2发送的配置完成消息(例如 RRCReconfigurationCompleteSidelink(侧行通信RRC重配置完成)消息)。
可选地，如果满足如下至少一条时，UE1认为对应的(corresponding)RRCReconfigurationSidelink消息(即第一RRCReconfigurationSidelink消息)中的源侧UE的remote UE local ID配置和/或目标侧UE的remote UE local ID配置需要应用(to be applied)：
-没有收到UE3发送的RRCReconfigurationFailureSidelink(侧行通信RRC重配置失败)消息；
-已经收到UE3发送的RRCReconfigurationCompleteSidelink。
可选地，如果满足如下至少一条时，UE1继续使用对应的(corresponding)RRCReconfigurationSidelink消息(即第一RRCReconfigurationSidelink消息)之前的源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID：
-收到UE3发送的配置失败消息(例如RRCReconfigurationFailureSidelink消息)；
-没有收到UE3发送的配置完成消息(例如RRCReconfigurationCompleteSidelink消息)；
-对应于UE3的用于监控是否对RRCReconfigurationSidelink消息回复了响应的定时器在运行。
如果UE1是PC-RRC连接建立后第一次通过RRCReconfigurationSidelink消息配置源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID，则RRCReconfigurationSidelink消息之前的源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID可以为默认取值。
可选地，步骤S202还可能为，UE1接收UE2发送的RRCReconfigurationFailureSidelink消息。则UE1继续使用RRCReconfigurationSidelink消息(即第一RRCReconfigurationSidelink消息)之前的源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID，同时向UE3发送新的第二RRCReconfigurationSidelink消息，携带第二RRCReconfigurationSidelink消息之前的源侧UE的remote UE local ID和/或目标侧UE的remote UE local ID。可选地，还可以在发送新的第二RRCReconfigurationSidelink消息前判断用于监控第二RRCReconfigurationSidelink消息的定时器是否在运行，如果定时器在运行， 停止该定时器。
步骤S202还可以变形为UE1收到UE3发送的RRCReconfigurationCompleteSidelink消息，或者收到UE3的RRCReconfigurationFailureSidelink消息。对应的处理流程，只需要将上述步骤中的“UE2”和“UE3”互换，“第一RRCReconfigurationSidelink”与“第二RRCReconfigurationSidelink”则所述描述仍然成立。
可选地，在步骤S201之前，UE2和/或UE3可以向UE1发送PC5-RRC消息(例如但不限于：RemoteUELocalIdRequest远端UE局部标识请求消息)请求配置remote UE local ID。UE1在收到请求消息后，为UE2和UE3配置remote UE local ID，执行步骤S201。
本发明中的remote UE local ID仅作为举例，其他需要源侧UE、Relay UE和目标侧UE之间保持一致、相等或者互相影响的参数(例如SRAP配置，信道映射配置等)也同样适用于上面所述的配置流程。
图5是本发明涉及的用户设备UE的简要结构框图。如图5所示，该用户设备UE700包括处理器701和存储器702。处理器701例如可以包括微处理器、微控制器、嵌入式处理器等。存储器702例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器702上存储有程序指令。该指令在由处理器701运行时，可以执行本发明详细描述的由用户设备执行的上述方法。
运行在根据本发明的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本发明的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器系统中。
用于实现本发明各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机系统读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机系统”可以是嵌入在该设备中的计算机系统，可以包括操作系统或硬件(如外围设备)。“计算机可读 记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。
用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本发明的一个或多个实施例也可以使用这些新的集成电路技术来实现。
此外，本发明并不局限于上述实施例。尽管已经描述了所述实施例的各种示例，但本发明并不局限于此。安装在室内或室外的固定或非移动电子设备可以用作终端设备或通信设备，如AV设备、厨房设备、清洁设备、空调、办公设备、自动贩售机、以及其他家用电器等。
如上，已经参考附图对本发明的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本发明也包括不偏离本发明主旨的任何设计改动。另外，可以在权利要求的范围内对本发明进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在本发明的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。

Claims (10)

  1. 一种由用户设备UE执行的方法，包括：
    在第一用户设备UE1与第二用户设备UE2之间的PC5-RRC连接建立、或者所述UE1与第三用户设备UE3之间的PC5无线资源控制PC5-RRC连接建立的情况下，所述UE1执行包括如下操作的至少一种：
    应用第一侧行通信无线链路控制SL-RLC的配置；
    应用第二侧行通信无线链路控制SL-RLC的配置；
    发起对第一侧行通信无线链路控制SL-RLC的配置；
    发起对第二侧行通信无线链路控制SL-RLC的配置；以及
    发起对远端UE局部标识remote UE local ID的配置，
    其中，
    如果所述UE1为源侧UE，则所述UE2为中继UE，所述UE3为目标侧UE；
    如果所述UE1为目标侧UE，则所述UE2为中继UE，所述UE3为源侧UE；
    如果所述UE1为中继UE，则所述UE2为源侧UE，所述UE3为目标侧UE，
    所述第一SL-RLC是指所述目标侧UE和所述中继UE之间的侧行通信无线链路控制SL-RLC，
    所述第二SL-RLC是指所述中继UE和所述源侧UE之间的侧行通信无线链路控制SL-RLC。
  2. 根据权利要求1所述的方法，其特征在于，
    所述侧行通信无线链路控制用于承载所述源侧UE和所述目标侧UE之间的SL-SRB3，
    所述SL-SRB3用于承载PC5无线资源控制PC5-RRC消息。
  3. 根据权利要求2所述的方法，其特征在于，
    所述SL-RLC配置无线链路控制RLC配置和/或多媒体接入控制MAC配置信息，
    其中，
    所述RLC配置中包括逻辑信道标识、序号长度，
    所述MAC配置信息包括优先级、逻辑信道组。
  4. 根据权利要求3所述的方法，其特征在于，
    所述SL-RLC的配置是协议规定的；或者是默认的；或者是由所述UE1或所述UE2或所述UE3配置的。
  5. 根据权利要求4所述的方法，其特征在于，
    若所述SL-RLC配置为协议规定的，则所述逻辑信道标识为协议规定的一个固定取值，所述逻辑信道组为协议规定的一个固定取值；
    若所述SL-RLC为默认的，则所述逻辑信道标识为一个默认取值，所述逻辑信道组为一个默认取值。
  6. 根据权利要求4所述的方法，其特征在于，
    若所述SL-RLC配置为协议规定的，则是对于如下消息的至少一种采用协议规定的SL-RLC配置；
    若所述SL-RLC配置为默认的，则是对于如下消息的至少一种采用默认的SL-RLC配置，
    所述如下消息为：
    第一条侧行通信RRC重配置RRCReconfigurationSidelink消息；
    自从所述PC5-RRC连接建立后的第一条侧行通信RRC重配置RRCReconfigurationSidelink消息；以及
    自从所述PC5-RRC连接建立后，在第一条侧行通信RRC重配置RRCReconfigurationSidelink消息之前的PC-RRC消息。
  7. 一种由用户设备UE执行的方法，包括：
    第一用户设备UE1为第二用户设备UE2和第三用户设备UE3配置远端UE局部标识remote UE local ID；以及
    所述UE1接收所述UE2发送的配置完成消息，
    其中，
    如果所述UE1为源侧UE，则所述UE2为中继UE，所述UE3为目标侧UE；
    如果所述UE1为目标侧UE，则所述UE2为中继UE，所述UE3为源侧UE；
    如果所述UE1为中继UE，则所述UE2为源侧UE，所述UE3为目标侧UE。
  8. 根据权利要求7所述的方法，其特征在于，
    所述UE1分别发送配置消息给所述UE2和所述UE3，以配置远端UE局部标识remote UE local ID，
    所述配置消息中携带如下信息的至少一种：
    所述源侧UE的remote UE local ID和/或所述目标侧UE的remote UE local ID信息；
    所述源侧UE的源层二标识Source L2 ID；
    所述目标侧UE的源层二标识Source L2 ID；以及
    所述中继UE的源层二标识Source L2 ID。
  9. 根据权利要求8所述的方法，其特征在于，
    在满足如下至少一条件的情况下，所述UE1认为对应的所述配置消息中的所述源侧UE的remote UE local ID配置和/或所述目标侧UE的remote UE local ID配置需要应用，
    所述至少一条件为：
    没有收到所述UE3发送的侧行通信RRC重配置失败RRCReconfigurationFailureSidelink消息；以及
    已经收到所述UE3发送的侧行通信RRC重配置完成RRCReconfigurationCompleteSidelink消息，
    或者
    在满足如下至少一条件的情况下，所述UE1继续使用对应的所述配置消息之前的所述源侧UE的remote UE local ID和/或所述目标侧UE的remote UE local ID，
    所述至少一条件为：
    已经收到所述UE3发送的侧行通信RRC重配置失败RRCReconfigurationFailureSidelink消息；
    没有收到所述UE3发送的侧行通信RRC重配置完成RRCReconfigurationCompleteSidelink消息；以及
    对应于所述UE3的用于监控是否对侧行通信RRC重配置RRCReconfigurationSidelink消息回复了响应的定时器在运行。
  10. 一种用户设备，包括：
    处理器；以及
    存储器，存储有指令；
    其中，所述指令在由所述处理器运行时执行根据权利要求1至9中任一项所述的方法。
PCT/CN2023/092183 2022-05-06 2023-05-05 由用户设备执行的方法及用户设备 Ceased WO2023213285A1 (zh)

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