WO2023010257A1 - 侧行通信方法、装置、设备及存储介质 - Google Patents

侧行通信方法、装置、设备及存储介质 Download PDF

Info

Publication number
WO2023010257A1
WO2023010257A1 PCT/CN2021/110149 CN2021110149W WO2023010257A1 WO 2023010257 A1 WO2023010257 A1 WO 2023010257A1 CN 2021110149 W CN2021110149 W CN 2021110149W WO 2023010257 A1 WO2023010257 A1 WO 2023010257A1
Authority
WO
WIPO (PCT)
Prior art keywords
lbt
terminal
carrier
failure
bwp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/110149
Other languages
English (en)
French (fr)
Inventor
张博源
卢前溪
冷冰雪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2021/110149 priority Critical patent/WO2023010257A1/zh
Priority to CN202180100232.2A priority patent/CN117652199A/zh
Priority to EP21952167.1A priority patent/EP4355010A4/en
Publication of WO2023010257A1 publication Critical patent/WO2023010257A1/zh
Priority to US18/409,365 priority patent/US20240147533A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/18Interfaces between hierarchically similar devices between terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections

Definitions

  • the present application relates to the field of mobile communication, and in particular to a lateral communication method, device, equipment and storage medium.
  • Embodiments of the present application provide a sidelink communication method, device, device, and storage medium, and provide a technical solution for performing sidelink transmission by performing LBT on authorization-free scheduling resources. Described technical scheme is as follows:
  • a sidelink communication method which is applied to a first terminal for sidelink transmission, and the method includes:
  • a sidelink communication method is provided, which is applied to a second terminal for sidelink transmission, and the method includes:
  • a sidelink communication method device which is used to implement a first terminal for sidelink transmission, and the device includes:
  • the LBT module is used to perform LBT on authorization-free scheduling resources
  • An execution module configured to execute a target operation in the case that LBT continues to fail triggered on the authorization-free scheduling resource.
  • a sidelink communication method device which is used to implement a second terminal for sidelink transmission, and the device includes:
  • the second receiving module is configured to receive the LBT continuous failure message sent by the first terminal, the LBT continuous failure message is sent by the first terminal after triggering the LBT continuous failure on the authorization-free scheduling resource;
  • the triggering module is used for triggering the radio link failure RLF.
  • a terminal includes: a processor and a transceiver connected to the processor; wherein,
  • the processor is configured to execute LBT on an authorization-free scheduling resource
  • the processor is configured to execute a target operation in the case that LBT continues to fail triggered on the authorization-free scheduling resource.
  • a terminal includes: a processor and a transceiver connected to the processor; wherein,
  • the transceiver is configured to receive a listen-before-talk LBT continuous failure message sent by the first terminal, where the LBT continuous failure message is sent by the first terminal after triggering LBT continuous failure on an authorization-free scheduling resource;
  • the processor is configured to trigger a radio link failure RLF.
  • a computer-readable storage medium wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to implement the side communication method.
  • a chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a computer device, it is used to realize the sidewalk described in the above aspect communication method.
  • a computer program product is provided.
  • the computer program product runs on a processor of a computer device, the computer device executes the lateral communication method described in the above aspect.
  • LBT Listen Before Talk, Listen Before Talk
  • the first terminal performs LBT recovery or frequency domain reselection by performing targeted operations to select available resources for sidelink transmission.
  • FIG. 1 is a schematic diagram of a transmission mode provided by an exemplary embodiment of the present application
  • Fig. 2 is a schematic diagram of a system architecture provided by an exemplary embodiment of the present application.
  • FIG. 3 is a method flowchart of a lateral communication method provided by an exemplary embodiment of the present application.
  • Fig. 4 is a method flowchart of a lateral communication method provided by an exemplary embodiment of the present application.
  • FIG. 5 is a method flowchart of a lateral communication method provided by an exemplary embodiment of the present application.
  • Fig. 6 is a method flowchart of a lateral communication method provided by an exemplary embodiment of the present application.
  • Fig. 7 is a method flowchart of a lateral communication method provided by an exemplary embodiment of the present application.
  • Fig. 8 is a method flowchart of a lateral communication method provided in an exemplary embodiment of the present application.
  • Fig. 9 is a structural block diagram of a lateral communication method device provided by an exemplary embodiment of the present application.
  • Fig. 10 is a structural block diagram of a lateral communication method device provided by an exemplary embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or “when” or “in response to a determination.”
  • LTE Long Term Evolution, long-term evolution
  • D2D Device-to-Device, device-to-device communication
  • V2X Vehicle-to-device communication
  • V2X Vehicle to everything
  • V2X communication includes Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication and Vehicle to People (V2P) communication.
  • V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, and improve traffic efficiency.
  • S Side Link
  • Device-to-device communication is a sidelink transmission technology. Different from the way communication data is received or sent through network devices in traditional cellular systems, the Internet of Vehicles system uses terminal-to-device direct communication, so it has a higher frequency spectrum. efficiency and lower transmission delay.
  • Two transmission modes of sidelink transmission are defined in 3GPP: Mode 1 and Mode 2.
  • Mode 1 as shown in (1) in FIG. 1 the network device 110 configures transmission resources for the terminal 120, and the terminal 120 performs sidelink data transmission on the configured transmission resources.
  • Mode 2 as shown in (2) in FIG. 1 the network device 110 allocates a resource pool for the terminal 120, and the terminal 120 selects one or more transmission resources from the resource pool for sidelink data transmission.
  • the terminal 120 may select a transmission resource from the resource pool through sensing (sensing, or translated as "listening", “monitoring"), or select a transmission resource from the resource pool through random selection.
  • the terminal relies on resource awareness or random selection to select time-frequency resources from the resource pool (candidate resources) configured or pre-configured by the network device for sending predictive information. Therefore, a more accurate description of mode 2 resource allocation should be resource selection.
  • mode 2a In the SI phase of NR (New Radio, new air interface) V2X, four resource allocation schemes of mode 2 have been proposed, namely mode 2a, mode 2b, mode 2c and mode 2d.
  • Mode 2a means that the terminal selects resources in the resource pool that are not reserved by other terminals or are reserved by other terminals but have low receiving power by decoding the sidelink control information and measuring the received power of the sidelink. Reduce the probability of resource collision and improve communication reliability.
  • Mode 2a generally inherits the main design of the resource selection mechanism in LTE V2X Mode 4, and selects resources based on operations such as resource reservation, resource awareness, and resource exclusion.
  • Mode 2b is a mode in which terminals perform resource selection through cooperation, that is, a terminal sends auxiliary information to help other terminals complete resource selection.
  • the foregoing auxiliary information may be a resource sensing result obtained by the terminal performing resource sensing, or a resource suggested to be used by other terminals.
  • terminal C sends auxiliary information to terminal A and terminal B, and terminal A and terminal B use the auxiliary information and the perception results of their own resource perception to select resources in the resource pool.
  • Mode 2c means that the network device configures or pre-configures a resource pattern (pattern) for the terminal, and the terminal uses the resources in the resource pattern to send the initial transmission and retransmission, so as to achieve the effect of reducing the transmission delay.
  • a resource pattern pattern
  • the terminal selects one of the resource patterns by using resource perception or geographic location information.
  • the terminal directly schedules time-frequency resources for other terminals.
  • the second terminal (scheduled terminal) works in mode 2d
  • the first terminal (scheduling terminal) can work in mode 1 or in mode 2.
  • D2D is divided into different stages for research.
  • ProSe Proximity based Service, proximity-based service
  • Device-to-device communication in Rel-12/13 is researched on the ProSe scenario, which is mainly aimed at public security services.
  • ProSe by configuring the position of the resource pool in the time domain, for example, the resource pool is discontinuous in the time domain, so that the UE (User Equipment, terminal) can discontinuously send/receive data on the sidelink, thereby saving power Effect.
  • V2X Vehicle-to-vehicle
  • Rel-14/15 the vehicle-to-vehicle communication system has been studied, which is mainly oriented to relatively high-speed mobile vehicle-to-vehicle and vehicle-to-human communication services; in V2X, due to the vehicle-to-vehicle system With continuous power supply, power efficiency is not the main problem, but the delay of data transmission is the main problem, so the system design requires the terminal equipment to perform continuous sending and receiving.
  • FeD2D Wearable Devices
  • this scenario studies the scenario where wearable devices access the network through mobile phones, and it is mainly for scenarios with low mobile speed and low power access.
  • the 3GPP conclusion in the pre-research stage is that the network equipment can configure the DRX (Discontinuous Reception, discontinuous reception) parameters of the remote (remote) terminal through a relay (forwarding) terminal, but since this subject has not entered the standardization stage further, The exact details of how the DRX configuration is done are inconclusive.
  • Multi-carrier In Rel-15LTE V2X, a multi-carrier mechanism is introduced. Specifically, the multi-carrier mechanism is reflected in that the UE can support data packet segmentation and use multiple carriers to transmit data packets to improve the data transmission rate; data packet duplication, will The same data packet is copied twice and sent with two carriers to improve transmission reliability; and multi-carrier reception enhancement at the receiving end.
  • V2X side chain communication supports side chain packet replication, and is executed at the PDCP (Packet Data Convergence Protocol) layer of the UE.
  • the PDCP PDU Packet Data Convergence Protocol
  • the PDCP PDU Protocol Data Unit, Protocol Data Unit
  • the duplicate PDP (Packet Data Protocol, packet data protocol) PDU of the same PDCP entity is submitted to two different RLC (Radio Link Control, radio link layer control protocol) entities and are respectively associated to two different side chain logical channels. Duplicate PDP PDUs of the same PDCP entity are only allowed to be transmitted on different sidechain carriers.
  • the UE can activate or deactivate sidechain packet replication based on (pre)configuration. Sidechain packet replication does not apply to transmissions with Rel (Release)-14 transmission profile (3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) TS (Technical Specification, Technical Specification) 23.285 [72]).
  • the PPPR value that supports sidechain packet replication can be (pre)configured via PPPR threshold.
  • the UE shall perform side-chain packet replication for data with configured PPPR values until the packet replication configuration is canceled for these PPPR values.
  • the UE reports the amount of data associated with one or more PPPR values and the destination to which the data belongs through a sidechain BSR (Buffer Status Report).
  • the mapping of the PPPR value to the logical channel group can be configured by the eNB, and the PPPR value is reflected by the associated logical channel group ID (Identity Document, identity identification number) included in the side chain BSR.
  • a list of one or more PPPR values may be reported by an RRC (Radio Resource Control, radio resource control) connected UE in sidechain UE information.
  • RRC Radio Resource Control, radio resource control
  • NR V2X is not limited to broadcast scenarios, but has been further expanded to unicast and multicast scenarios, and the application of V2X is studied in these scenarios.
  • NR V2X will also define the two resource authorization modes of mode 1 and mode 2 above; further, the terminal may be in a mixed mode, that is, it can use mode 1 for resource acquisition and at the same time can use Mode 2 acquires resources.
  • the resource acquisition is indicated through the sidelink authorization, that is, the sidelink authorization indicates the corresponding PSCCH (Physical Sidelink Control Channel, physical sidelink control channel) and PSSCH (Physical Sidelink Shared Channel, physical sidelink shared channel) resource time-frequency location.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel, physical sidelink shared channel
  • NR V2X in addition to the HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) retransmission initiated by the UE without feedback, NR V2X introduces feedback-based HARQ retransmission, which is not limited to unicast communication, but also includes group broadcast communication.
  • HARQ Hybrid Automatic Repeat reQuest, hybrid automatic repeat request
  • LBT Listen Before Talk
  • a transmitter transmitting terminal listens/senses a channel to determine whether the channel is free or busy, and performs transmission only when the channel is sensed to be free.
  • a UE When a UE detects a consistent uplink LBT failure, it takes the actions specified in 3GPP TS 38.321 [6]. The detection is based on each bandwidth part (Bandwidth Part, BWP) and based on all uplink transmissions within the BWP.
  • BWP Bandwidth Part
  • the UE When a consistent uplink LBT failure is detected on the SCell (Secondary Cell, the secondary cell), the UE passes the MACCE (Medium Access Control Control Element, Media Access Control Unit) on a serving cell different from the SCell that detected the failure Report this to the corresponding gNB (MN (Master Node, primary node) for MCG (Master Cell group, primary cell group), SN (Secondary Node, secondary node) for SCG (Secondary Cell group, secondary cell group)) . If no resources are available for transmitting the MAC CE, the UE may transmit a Scheduling Request (SR).
  • SR Scheduling Request
  • the UE When a consistent uplink LBT failure is detected on the SpCell (special Cell, SpCell includes PCell and PSCell), the UE switches to another UL configured with RACH (Random Access Channel) resources on the cell BWP (Bandwidth Part, bandwidth part), initiates RACH, and reports failure through MACCE. When multiple UL BWPs are available for exchange, it is up to the UE implementation to choose which one.
  • PSCell Primary Secondary Cell, primary secondary cell
  • SCG RLF Radio Link Failure radio link failure
  • SCGFailureInformation SCG Failure Information
  • Fig. 2 shows a block diagram of a communication system supporting sidelink transmission provided by an exemplary embodiment of the present application.
  • the communication system may be a schematic diagram of a non-roaming 5G system architecture (Non-roaming 5G system architecture), and the system architecture may be applied to a vehicle networking (Vehicle to everything, V2X) service using D2D (Device to Device, device to device) technology.
  • V2X Vehicle to everything
  • the system architecture includes a data network (Data Network, DN), in which a V2X application server (Application Server) required by the V2X service is set.
  • the system architecture also includes the 5G core network.
  • the network functions of the 5G core network include: unified data management (Unified Data Management, UDM), policy control function (Policy Control Function, PCF), network exposure function (Network Exposure Function, NEF), Application function (Application Function, AF), unified data storage (Unified Data Repository, UDR), access and mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF) and user plane Function (User Plane Function, UPF).
  • the system architecture also includes: a radio access network (New Generation-Radio Access Network, NG-RAN) and 4 terminals (namely, terminal 1 to terminal 4) shown as examples.
  • NG-RAN New Generation-Radio Access Network
  • each terminal is configured with a V2X application (Application) or an application supporting SL transmission.
  • V2X application Application
  • gNBs base stations
  • the data network and the user plane function in the 5G core network are connected through the N6 reference point (Reference Point), and the V2X application server and the V2X application in the terminal are connected through the V1 reference point; the wireless access network and the 5G core network
  • the AMF function and UPF function connection the wireless access network is connected to Terminal 1 and Terminal 5 respectively through the Uu reference point; the sidelink transmission is performed between multiple terminals through the PC5 reference point, and the V5 reference point is used between multiple V2X applications Click to connect.
  • the aforementioned reference points may also be referred to as "interfaces".
  • the "5G NR system" in the embodiments of the present disclosure may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solution described in the embodiments of the present disclosure can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system.
  • the technical solutions described in the embodiments of the present disclosure can be applied to V2x applications, and can also be applied to other applications that use sidelink transmission, such as public safety (public safety) and commercial applications.
  • FIG. 3 shows a flowchart of a lateral communication method provided by an embodiment of the present application.
  • the method can be applied to any terminal (first terminal) in the system architecture shown in FIG. 2 .
  • the method includes the following steps.
  • Step 210 in a multi-carrier-based sidelink transmission scenario, the first terminal performs LBT on unlicensed scheduling resources.
  • the first terminal is the sending terminal in the sidelink transmission.
  • the first terminal is a terminal supporting a multi-carrier scenario, and the method in this embodiment of the present application is applied to sidelink transmission in a multi-carrier scenario.
  • Grant-free scheduling resources are resources in the candidate resource set. That is, the candidate resource set of the first terminal includes grant-free scheduling resources.
  • the candidate resource set is a resource set determined by the first terminal for the layer-2 target address or logical channel or HARQ process.
  • the candidate resource set includes resources on the carrier set determined by the first terminal for the layer 2 target address or logical channel or HARQ process.
  • Layer 2 includes at least one of an SDAP (Service Data Adaptation Protocol, Service Data Adaptation Protocol) layer, an RRC layer, a PDCP layer, an RLC layer, and a MAC (Medium Access Control, Media Access Control) layer.
  • SDAP Service Data Adaptation Protocol, Service Data Adaptation Protocol
  • RRC Radio Resource Control
  • PDCP Packet Control Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control, Media Access Control
  • the set of candidate resources includes at least unlicensed scheduling resources (resources on unlicensed carriers), and based on this, the set of candidate resources may also include authorized resources (resources on authorized carriers).
  • LBT is performed at the BWP granularity.
  • “performing LBT on the license-free scheduling resource” may be referred to as performing LBT on the BWP on the carrier, and at this time, the license-free scheduling resource is a resource on the carrier.
  • “performing LBT on the license-free scheduling resource” may refer to performing LBT on one BWP on the carrier, and at this time, the license-free scheduling resource is a resource on the BWP.
  • Step 220 in the case that triggering LBT continues to fail on the authorization-free scheduling resource, execute the target operation.
  • the method for triggering LBT continuous failure is as follows:
  • the first terminal LBT detection times threshold and the LBT failure detection timer are configured by the network device for the first terminal.
  • the MAC layer of the first terminal receives the LBT failure indication of the authorization-free scheduling resource transmitted by the physical layer (Physical Layer, PHY); the MAC layer starts or restarts the LBT failure detection timer, and increases the LBT failure count by 1; when the LBT failure count is greater than or equal to the threshold of LBT detection times, the MAC layer determines that triggering LBT on the authorization-free scheduling resources continues to fail.
  • the physical layer Physical Layer, PHY
  • the network device configures sl-lbt-FailureInstanceMaxCount (LBT detection times threshold) and sl-lbt-FailureDetectionTimer (LBT failure detection timer) for the terminal, and the MAC layer of the first terminal (sending terminal) will maintain SL_LBT_COUNTER (LBT failure count) and Initialized to 0.
  • LBT detection times threshold sl-lbt-FailureInstanceMaxCount
  • LBT failure detection timer LBT failure detection timer
  • the method provided by this embodiment performs LBT on the authorization-free scheduling resources in a multi-carrier-based sidelink transmission scenario, and selects available resources on the authorization-free scheduling resources based on the LBT result for sidelink transmission.
  • LBT fails, the first terminal performs LBT recovery or frequency domain reselection by performing target operations, so as to select available resources for sidelink transmission.
  • the target operation performed by the first terminal after the LBT continues to fail includes at least one of frequency point switching, sending a failure message, and LBT recovery.
  • Frequency switching refers to:
  • the first terminal triggers continuous failure of LBT on a BWP of the candidate resource set.
  • a BWP of an unlicensed carrier that does not trigger continuous failure of LBT in the candidate resource set, or there are available resources on the authorized carrier, then the first terminal Reselect resources in the candidate resource set for sidelink transmission.
  • Sending failure message refers to:
  • the first terminal triggers LBT continuous failure on a BWP, and sends an LBT failure message to the second terminal (the receiving terminal of the sidelink transmission) to inform the second terminal of the LBT failure.
  • the first terminal triggers LBT continuous failure on BWPs of all carriers in the candidate resource set, and the first terminal sends an LBT continuous failure indication to the network device, so that the network device reconfigures a new candidate resource set.
  • the above three target operations can be combined arbitrarily, for example, the first terminal can perform the above three target operations when triggering LBT continues to fail, or perform any of the above three target operations One or two.
  • the first terminal determines a candidate resource set for sidelink transmission with respect to the layer 2 target address/logical channel/HARQ process.
  • the set of candidate resources includes resources on unlicensed carriers (license-free scheduling resources).
  • the description is made by taking as an example that the candidate resource set of the first terminal includes the grant-free scheduling resources on the first carrier and the resources on the second carrier.
  • the first carrier is an unlicensed carrier
  • the second carrier is an unlicensed carrier set or an authorized carrier.
  • this embodiment of the present application provides two ways (1) and (2).
  • step 210 includes step 211
  • step 220 includes step 221 .
  • Step 211 in the multi-carrier-based sidelink transmission scenario, perform LBT on the BWP of the first carrier.
  • Step 221 in the case that triggering LBT continues to fail on the BWP of the first carrier, select resources from the second carrier for sidelink transmission.
  • the first terminal traverses the candidate resource set to select an available resource from the candidate resource set for sidelink transmission.
  • the first terminal switches to the next carrier.
  • the carrier is an unlicensed carrier, continue to perform LBT on the carrier , if the LBT is successful, the available resources on the carrier are used for sidelink transmission; if the carrier is a licensed carrier and there are available resources, the available resources are used for sidelink transmission.
  • the strategy for the first terminal to traverse the candidate resource set may be arbitrary, which is not limited in this embodiment of the present application.
  • the first terminal performs LBT on the BWP of the second carrier; if the LBT is successfully triggered on the BWP of the second carrier, select available resources on the second carrier for side travel link transmission.
  • LBT recovery is performed.
  • triggering LBT on the BWP of the second carrier continues to fail, and the first terminal has not finished traversing the carriers in the candidate resource set, reselect available resources from the remaining untraversed carriers for sidelink transmission.
  • the first terminal selects available resources on the second carrier to perform sidelink transmission.
  • the resource will be triggered for this layer 2 target address/logical channel/HARQ process Reselection, further resource reselection will trigger carrier reselection, and the MAC entity of the first terminal will reselect other license-free carriers to perform LBT and send data.
  • step 210 includes step 212
  • step 220 includes step 222 .
  • Step 212 in the multi-carrier-based sidelink transmission scenario, perform LBT on the first BWP.
  • the candidate resource set of the first terminal includes authorization-free scheduling resources on the first BWP and resources on the second BWP.
  • the first BWP is the BWP on the first carrier
  • the second BWP is the BWP on the first carrier
  • the second BWP is the BWP on the second carrier.
  • Step 222 in the case that triggering LBT on the first BWP continues to fail, select resources from the second BWP for sidelink transmission.
  • the first terminal traverses the candidate resource set to select an available resource from the candidate resource set for sidelink transmission.
  • the first terminal switches to the next BWP, and if the carrier to which the BWP belongs is an unlicensed carrier, continue to execute on the BWP LBT, if the LBT is successful, use the available resources on the BWP for sidelink transmission; if the carrier to which the BWP belongs is an authorized carrier and there are available resources on the BWP, use the available resources for sidelink transmission.
  • the strategy for the first terminal to traverse the candidate resource set may be arbitrary, which is not limited in this embodiment of the present application.
  • LBT is performed on the second BWP; when LBT is successfully triggered on the second BWP, available resources are selected on the second BWP for sidelink transmission.
  • LBT recovery is performed. In the case that triggering LBT on the second BWP continues to fail, and the first terminal has not finished traversing the BWPs in the candidate resource set, it reselects available resources from the remaining BWPs that have not been traversed to perform sidelink transmission.
  • the carrier to which the second BWP belongs is a licensed carrier, available resources are selected on the second BWP to perform sidelink transmission.
  • the method provided by this embodiment switches to another carrier/BWP in the candidate resource set when the candidate resource set has not been completely traversed after LBT continues to fail, and continues to select transmission resources.
  • the switched carrier is a licensed carrier, select available resources on the licensed carrier for sidelink transmission; if the switched carrier is an unlicensed carrier, continue to perform LBT to select available resources for sidelink transmission after the LBT is successful link transmission.
  • step 220 includes step 223 .
  • Step 223 In the case of triggering LBT continuous failure on the BWP of the first carrier, and in the case of triggering LBT continuous failure on the authorization-free scheduling resource, send a LBT continuous failure message to the second terminal, and the LBT continuous failure message includes the first LBT Continuous failure indication and/or LBT persistent failure information.
  • the second terminal is the receiving terminal for the sidelink transmission.
  • the LBT persistent failure information includes at least one of LBT failure carrier, LBT failure BWP, LBT failure carrier set, LBT failure BWP set, target switching carrier, target switching BWP, target selection carrier, and target selection BWP.
  • the first LBT continuous failure indication is used to inform the second terminal that the LBT continues to fail.
  • the LBT failure carrier is the carrier that triggers the continuous failure of LBT, for example, the first carrier.
  • the LBT failure BWP is the BWP that triggers the continuous failure of the LBT, for example, the first BWP.
  • the target switching carrier is the carrier to which the frequency switching is performed, for example, the second carrier.
  • the target switching BWP is the BWP to which the frequency switching is performed, for example, the second BWP.
  • the target selected carrier is the carrier finally selected by the first terminal for sidelink transmission.
  • the target selection BWP is the BWP finally selected by the first terminal for sidelink transmission.
  • the LBT continuous failure message is carried on the MAC CE.
  • the first LBT continuous failure indication and the LBT continuous failure information in the LBT continuous failure message may be carried on the same MAC CE, or may be carried on different MAC CEs.
  • the LBT continuous failure message includes the first LBT continuous failure indication and the LBT continuous failure information; in one case: the first LBT continuous failure indication is carried on the first MAC CE, and the LBT continuous failure information is carried on the second MAC CE In another case: the first LBT continuous failure indication and the LBT continuous failure information are carried on the third MAC CE.
  • LBT continuous failure is triggered for a certain carrier/a certain BWPMAC layer, for unicast, multicast or broadcast services:
  • the first terminal can send an LBT failure message to the second terminal.
  • the LBT failure message may include at least one of the following information: LBT failure indication, LBT failure carrier or carrier set, target switching carrier, and carrier to which the first terminal is to switch to continue sending service data.
  • the first terminal sends an LBT persistent failure message to the second terminal on the available resources for sidelink transmission.
  • the first terminal may consider sending the LBT continuous failure message in the following manner:
  • the first terminal can report an LBT request assistance (SL-BSR or RRC message) to the network device, and the network device assists in performing LBT and sharing the available resources on the carrier through COT (Channel Occupancy Time, channel occupancy time) The first terminal.
  • the first terminal sends the sidelink transmission on the license-free scheduling resource where the network device performs LBT scheduling.
  • the first terminal when there is no available resource for sidelink transmission, the first terminal sends an LBT request for assistance to the network device; the network device receives the LBT request for assistance, assists in the execution of LBT, and configures the first terminal for authorization-free assistance through COT sharing Scheduling resources.
  • the first terminal receives the auxiliary authorization-free scheduling resource configured for the first terminal shared by the network device through the COT.
  • the auxiliary authorization-free scheduling resource includes the available resources obtained by the network device assisting in the execution of LBT;
  • the terminal sends an LBT continuous failure message.
  • the LBT request for assistance is carried in an SL-BSR or RRC message.
  • the first terminal may send the LBT failure message through the default sending resource pool configured on the authorized carrier.
  • the sending resource pool may be a mode 2 candidate resource pool.
  • the LBT persistent failure message is sent to the second terminal through the candidate resource pool configured on the default authorized carrier.
  • the candidate resource pool is the candidate resource pool of mode 2.
  • default in the default authorized carrier is translated as “default”, and the default authorized carrier is configured by the network device.
  • the configuration of the default authorized carrier can be configured in the following ways:
  • the first terminal and the second terminal may negotiate through the PC5-RRC message when the unicast connection is established.
  • the default authorized carrier is determined through PC5-RRC message negotiation when the first terminal establishes a connection with the second terminal.
  • the network device configures a default authorized carrier for the first terminal or the second terminal, and the first terminal negotiates and determines to use the default authorized carrier when establishing a connection with the second terminal.
  • the configuration granularity can be layer 2 target address/QoS (Quality of Service, quality of service)/logical channel.
  • the default authorized carrier is configured by the network device.
  • the default authorized carrier is configured by the network device based on the layer 2 target address, QoS or logical channel.
  • the first MAC CE can be sent using the methods shown in 2.1) and 2.2), while the second MAC CE The resources of can be scheduled by the second terminal for the first terminal.
  • the resource for sending the LBT continuous failure message may be provided by the second terminal.
  • the network device may configure a first LBT timer for the second terminal. When the first LBT timer expires and the second terminal runs on the first LBT timer When no data packet sent by the first terminal is received within the time period, the second terminal dispatches a sidelink grant (sidelink authorization resource) to the first terminal. If LBT failure (LBT continuous failure) occurs in the first terminal, then The first terminal can use the sidelink grant to send an LBT continuous failure message to the second terminal.
  • sidelink grant sidelink authorization resource
  • the first LBT continuous failure indication is carried on the first MAC CE
  • the LBT continuous failure information is carried on the second MAC CE.
  • the first terminal sends a first MAC CE to the second terminal, and the first MAC CE includes a first LBT continuous failure indication.
  • the second terminal receives the first MAC CE sent by the first terminal, and the first MAC CE carries a first LBT continuous failure indication; in response to the first MAC CE, the second terminal starts the first LBT timer, and the first LBT timer is the network
  • the device is configured for the second terminal; when the first LBT timer expires and the sidelink transmission data sent by the first terminal is not received, the sidelink grant resource is scheduled to the first terminal; wherein, the sidelink grant Resource used to send LBT persistent failure messages.
  • the first terminal receives the sidelink grant resource scheduled by the second terminal for the first terminal, and the sidelink grant resource is the case where the second terminal has not received the sidelink transmission data sent by the first terminal when the first LBT timer expires.
  • the following is scheduled for the first terminal, the first LBT timer is started when the second terminal receives the first MAC CE; the second MAC CE is sent to the second terminal on the sideline transmission resource, and the second MAC CE includes LBT Continuous failure message.
  • the first terminal after triggering LBT continuous failure, the first terminal sends an LBT continuous failure message to the second terminal to inform the second terminal that LBT continues to fail, and the carrier and BWP of LBT continuous failure or a carrier set or a BWP set, and indicate to the second terminal the target switching carrier or the target switching BWP, so that the second terminal responds to the continuous failure of the LBT, so as to implement sidelink transmission on the unlicensed scheduling resources.
  • the second terminal may trigger a radio link failure (RLF) after receiving the LBT continuous failure message.
  • RLF radio link failure
  • FIG. 7 shows a flow chart of a lateral communication method provided by an embodiment of the present application.
  • the method can be applied to any terminal (second terminal) in the system architecture shown in FIG. 2 .
  • the method includes the following steps:
  • Step 310 the second terminal receives the LBT continuous failure message sent by the first terminal.
  • the LBT continuous failure message is sent after the first terminal triggers the LBT continuous failure on the authorization-free scheduling resource.
  • the LBT continuous failure message includes the first LBT continuous failure indication and/or LBT continuous failure information; wherein, the LBT continuous failure information includes the LBT failure carrier, or the LBT failure BWP, the LBT failure carrier set, the LBT failure BWP set, the target switching carrier, the target Toggle at least one of the BWPs.
  • the first terminal is connected to the second terminal by unicast.
  • Step 320 the second terminal triggers RLF.
  • the network device may configure the second LBT timer for the second terminal.
  • the second terminal receives the LBT continuous failure message sent by the first terminal
  • the first terminal configures the target switching carrier/target switching BWP/default authorized carrier in the LBT continuous failure message
  • the second terminal will start the second LBT timer, when the second LBT timer expires and the second terminal does not receive new data sent by the first terminal on the indicated target switching carrier/target switching BWP/default authorized carrier, the second terminal will trigger RLF.
  • the LBT persistent failure message includes a target switching carrier or a target switching BWP.
  • the second terminal receives the second LBT timer configured by the network device for the second terminal.
  • the second terminal starts a second LBT timer; when the second LBT timer expires and the second terminal does not receive the sidelink transmission data sent by the first terminal on the target transmission resource , the second terminal triggers RLF; wherein, the target transmission resource includes at least one of a target handover carrier, a target handover BWP, and a default authorized carrier.
  • the first terminal When the first terminal triggers LBT continuous failure on the current carrier, and the first terminal is not configured with a target switching carrier/target switching BWP/default authorized carrier that can be used for switching, the first terminal does not The instruction to switch carriers will be carried in the LBT continuous failure message, and the second terminal will immediately trigger the RLF when receiving the LBT continuous failure message.
  • the LBT persistent failure message does not include the target switching carrier or the target switching BWP; in response to the LBT persistent failure message, the RLF is triggered.
  • the second terminal after the second terminal receives the LBT continuous failure message sent by the first terminal, if the LBT continuous failure message indicates the target switching carrier or the target switching BWP or the default authorized carrier, then The second terminal starts the timer. If the data packet sent by the first terminal is not received before the timer expires, the first terminal triggers RLF; if the LBT continuous failure message does not indicate the target switching carrier or target switching BWP or default authorization carrier, the second terminal triggers the RLF when receiving the LBT persistent failure message.
  • FIG. 8 shows a flowchart of a lateral communication method provided by an embodiment of the present application. The method can be applied to any terminal (first terminal) in the system architecture shown in FIG. 2 . Based on the exemplary embodiment shown in FIG. 3 , step 220 includes step 224 .
  • Step 210 in the multi-carrier-based sidelink transmission scenario, execute LBT on the unlicensed scheduling resources, which are the resources on all the carriers in the candidate resource set.
  • Step 224 In the case that all BWPs in the candidate resource set trigger continuous LBT failure, send a second continuous LBT failure indication to the network device.
  • the second LBT persistent failure indication is carried in RRC signaling.
  • the second LBT persistent failure indication includes the candidate resource set determined by the MAC layer for the layer-2 target address or logical channel or HARQ process.
  • the MAC layer When the SL-BWP on all carriers selected by this layer 2 target address/logical channel/HARQ process triggers LBT continuous failure, the MAC layer will report the LBT continuous failure to the upper layer.
  • the RRC layer receives the third LBT continuous failure indication reported by the MAC layer, it will report the second LBT continuous failure indication for this destination ID (target address) to the network device through the uplink resource through RRC signaling.
  • the first Two LBT persistent failure indications can be associated with the set of carriers selected by the MAC layer for this destination ID. The network device can reconfigure the carrier set for this destination ID.
  • the MAC layer of the first terminal transmits the third LBT continuous failure indication to the RRC layer; the third LBT continuous failure sent by the MAC layer is received at the RRC layer In the case of an indication, the RRC layer sends the second LBT persistent failure indication to the network device through RRC signaling.
  • the first terminal may also receive transmission resources configured by the network device for sidelink transmission. Resources are selected from newly configured transmission resources for sidelink transmission.
  • the method provided by this embodiment sends an LBT continuous failure indication to the network device after the BWP on all carriers in the candidate resource set triggers the LBT continuous failure, so that the network device reconfigures the carrier for the first terminal , for sidelink transmission, so that after the first terminal fails to perform LBT on the grant-free scheduling resource, it can complete the sidelink transmission according to the resources reconfigured by the network device.
  • Fig. 9 shows a structural block diagram of a sidelink communication method device provided by an exemplary embodiment of the present application, the device is used to implement a first terminal for sidelink transmission, or one or more modules in the first terminal , the device includes:
  • the LBT module 401 is configured to perform listen-before-talk LBT on authorization-free scheduling resources
  • the execution module 402 is configured to execute the target operation in the case that the LBT continues to fail triggered on the authorization-free scheduling resource.
  • the device also includes:
  • the MAC module 403 is used for the medium access control MAC layer of the first terminal to receive the LBT failure indication of the authorization-free scheduling resource transmitted by the physical layer PHY;
  • the MAC module 403 is used for the MAC layer to start or restart the LBT failure detection timer, and increase the LBT failure count by 1;
  • the MAC module 403 is configured to, when the LBT failure count is greater than or equal to the LBT detection times threshold, the MAC layer determines to trigger the LBT continuous failure on the authorization-free scheduling resource.
  • the device also includes:
  • the LBT detection times threshold and the LBT failure detection timer are configured by the network device for the first terminal.
  • the target operation includes at least one of frequency switching, sending a failure message, and LBT recovery.
  • the target operation includes the frequency switching
  • the candidate resource set of the first terminal includes the license-free scheduling resource on the first carrier and resources on the second carrier
  • the execution module 402 includes a reselection submodule 405;
  • the LBT module 401 is configured to perform LBT on the bandwidth part BWP of the first carrier;
  • the reselection submodule 405 is configured to select resources from the second carrier to perform the sidelink transmission when the LBT continues to fail triggered on the BWP of the first carrier.
  • the reselection submodule 405 is configured to perform LBT on the BWP of the second carrier when the second carrier is an unlicensed carrier; When the LBT is successfully triggered on the BWP of the second carrier, select available resources on the second carrier to perform the sidelink transmission;
  • the reselection submodule 405 is configured to select the available resource on the second carrier to perform the sidelink transmission if the second carrier is a licensed carrier.
  • the target operation includes the frequency switching
  • the candidate resource set of the first terminal includes the authorization-free scheduling resource on the first BWP and the resource on the second BWP
  • the execution module 402 includes a reselection submodule 405;
  • the LBT module 401 is configured to execute LBT on the first BWP;
  • the reselection submodule 405 is configured to select resources from the second BWP to perform the sidelink transmission when the LBT continues to fail triggered on the first BWP;
  • the first BWP is the BWP on the first carrier
  • the second BWP is the BWP on the first carrier or the second carrier.
  • the reselection submodule 405 is configured to perform LBT on the second BWP when the carrier to which the second BWP belongs is an unlicensed carrier; When triggering LBT on the second BWP is successful, select available resources on the second BWP to perform the sidelink transmission;
  • the reselection submodule 405 is configured to select available resources on the second BWP to perform the sidelink transmission when the carrier to which the second BWP belongs is a licensed carrier.
  • the target operation includes the sending failure message, and the sidelink transmission further includes the second terminal;
  • the execution module 402 includes a sending submodule 406;
  • the sending submodule 406 is configured to send an LBT persistent failure message to the second terminal in the case that the LBT persistent failure is triggered on the authorization-free scheduling resource, and the LBT persistent failure message includes a first LBT persistent failure indication and/or LBT persistent failure messages;
  • the LBT persistent failure information includes at least one of LBT failure carrier, LBT failure BWP, LBT failure carrier set, LBT failure BWP set, target switching carrier, target switching BWP, target selection carrier, and target selection BWP.
  • the LBT persistent failure message is carried on a media access control element MAC CE.
  • the LBT continuous failure message includes the first LBT continuous failure indication and the LBT continuous failure information
  • the first LBT continuous failure indication is carried on the first MAC CE, and the LBT continuous failure information is carried on the second MAC CE;
  • the first LBT continuous failure indication and the LBT continuous failure information are carried on the third MAC CE.
  • the sending submodule 406 is configured to, if there are available resources for the sidelink transmission, send the The second terminal sends the LBT continuous failure message.
  • the device also includes:
  • the sending submodule 406 is configured to send an LBT request assistance to the network device when there is no available resource for the sidelink transmission;
  • the first receiving module 404 is configured to receive the auxiliary authorization-free scheduling resource configured for the first terminal by the network device sharing the channel occupancy time length COT, and the auxiliary authorization-free scheduling resource includes the auxiliary authorization-free scheduling resource obtained by the network device assisting in performing LBT available resources;
  • the sending submodule 406 is configured to send the LBT persistent failure message to the second terminal on the auxiliary authorization-free scheduling resource.
  • the LBT request assistance is carried in a sidelink-buffer status report SL-BSR or a radio resource control RRC message.
  • the sending submodule 406 is configured to, in the case that there are no available resources for the sidelink transmission, send a message to the second The second terminal sends the LBT continuous failure message.
  • the candidate resource pool is a mode 2 candidate resource pool.
  • the default authorized carrier is determined through PC5-RRC message negotiation when the first terminal establishes a connection with the second terminal.
  • the default authorized carrier is configured by a network device.
  • the default authorized carrier is configured by the network device based on layer 2 target address, quality of service QoS or logical channel .
  • the first LBT persistent failure indication is carried on the first MAC CE, and the LBT persistent failure information is carried on the second MAC CE; the device further includes:
  • the first receiving module 404 is configured to receive the side grant resource scheduled by the second terminal for the first terminal, where the side grant resource is not received by the second terminal when the first LBT timer expires When the sidelink transmission data sent by the first terminal is scheduled for the first terminal, the first LBT timer is started when the second terminal receives the first MAC CE ;
  • the sending submodule 406 is configured to send the first MAC CE to the second terminal, where the first MAC CE includes the first LBT persistent failure indication;
  • the sending submodule 406 is configured to send the second MAC CE to the second terminal on the sidelink transmission resource, where the second MAC CE includes the LBT persistent failure information.
  • the target operation includes the LBT recovery, and the authorization-free scheduling resources are resources on all carriers in the candidate resource set;
  • the execution module 402 includes: a sending submodule 406;
  • the sending submodule 406 is configured to send a second LBT persistent failure indication to the network device when the LBT persistent failure is triggered on all BWPs of the candidate resource set.
  • the second LBT persistent failure indication is carried in radio resource control RRC signaling.
  • the second LBT persistent failure indication includes the candidate resource set determined by the medium access control MAC layer for a layer 2 target address or a logical channel or a hybrid automatic repeat process (HARQ) process.
  • HARQ hybrid automatic repeat process
  • the device also includes:
  • the first receiving module 404 is configured to receive the transmission resource configured by the network device for the sidelink transmission.
  • the device also includes:
  • the MAC module 403 configured to trigger the LBT persistent failure on all BWPs of the candidate resource set, the MAC layer of the first terminal transmits a third LBT persistent failure indication to the RRC layer;
  • the sending submodule 406 is configured to, when the RRC layer receives the third LBT persistent failure indication sent by the MAC layer, send the RRC layer to the network device through RRC signaling. Second LBT persistent failure indication.
  • the candidate resource set of the first terminal includes the authorization-free scheduling resource, and the candidate resource set includes the resource determined by the first terminal for the Layer 2 target address or logical channel or HARQ process. collection of resources.
  • Fig. 10 shows a structural block diagram of a sidelink communication method device provided by an exemplary embodiment of the present application, the device is used to implement a second terminal for sidelink transmission, or one or more modules in the second terminal , the device includes:
  • the second receiving module 501 is configured to receive the LBT continuous failure message sent by the first terminal, the LBT continuous failure message is sent by the first terminal after triggering the LBT continuous failure on the authorization-free scheduling resource;
  • a triggering module 502 configured to trigger a radio link failure RLF.
  • the LBT continuous failure message includes a first LBT continuous failure indication and/or LBT continuous failure information
  • the LBT persistent failure information includes at least one of LBT failure carrier, or LBT failure BWP, LBT failure carrier set, LBT failure BWP set, target switching carrier, target switching BWP, target selection carrier, and target selection BWP.
  • the LBT persistent failure message includes the target switching carrier or the target switching BWP; the device further includes:
  • a timing module 503, configured to start a second LBT timer in response to the LBT continuous failure message
  • the triggering module 502 is configured to trigger the RLF when the second LBT timer expires and the sidelink transmission data sent by the first terminal on the target transmission resource is not received;
  • the target transmission resource includes at least one of the target handover carrier, the target handover BWP, and a default authorized carrier.
  • the second receiving module 501 is configured to receive the second LBT timer configured by a network device for the second terminal.
  • the LBT persistent failure message does not include the target switching carrier or the target switching BWP;
  • the triggering module 502 is configured to trigger the RLF in response to the LBT persistent failure message.
  • the LBT continuous failure message includes the first LBT continuous failure indication and the LBT continuous failure information; the device further includes:
  • the second receiving module 501 is configured to receive the first MAC CE sent by the first terminal, the first MAC CE carrying the first LBT continuous failure indication;
  • a timing module 503, configured to start a first LBT timer in response to the first MAC CE, where the first LBT timer is configured by the network device for the second terminal;
  • a scheduling module 504, configured to schedule sidelink grant resources to the first terminal when the first LBT timer expires and the sidelink transmission data sent by the first terminal is not received;
  • the side grant resource is used to send the LBT continuous failure information.
  • FIG. 11 shows a schematic structural diagram of a communication device (terminal or network device) provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 101 , a receiver 102 , a transmitter 103 , a memory 104 and a bus 105 .
  • the processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
  • the receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.
  • the memory 104 is connected to the processor 101 through the bus 105 .
  • the memory 104 may be used to store at least one instruction, and the processor 101 is used to execute the at least one instruction, so as to implement various steps in the foregoing method embodiments.
  • the memory 104 can be implemented by any type of volatile or non-volatile storage device or their combination.
  • the volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Electrically-Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read-Only Memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).
  • the processor and the transceiver in the communication device involved in the embodiment of the present application may perform the steps performed by the terminal in any of the methods shown above, which will not be repeated here.
  • the processor is used for the processor, configured to execute LBT on the authorization-free scheduling resource; and execute the target operation when triggering LBT continuous failure on the authorization-free scheduling resource.
  • the receiver is configured to receive a listen-before-talk LBT continuous failure message sent by the first terminal, where the LBT continuous failure message is sent by the first terminal after the LBT continuous failure is triggered on an authorization-free scheduling resource;
  • the processor is configured to trigger a radio link failure RLF.
  • a computer-readable storage medium stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the At least one section of program, the code set or instruction set is loaded and executed by the processor to implement the sidewalk communication method performed by the communication device provided in the above method embodiments.
  • a chip is also provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a computer device, it is used to realize the sidewalk communication described in the above aspect method.
  • the program can be stored in a computer-readable storage medium.
  • the above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请公开了一种侧行通信方法、装置、设备及存储介质,涉及移动通信领域。应用于侧行链路传输的第一终端中,所述方法包括:在免授权调度资源上执行先听后说LBT;在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。该方法提供了一种在免授权调度资源上执行LBT的方式进行侧行链路传输的技术方案。

Description

[根据细则91更正 23.08.2021] 侧行通信方法、装置、设备及存储介质 技术领域
[根据细则91更正 23.08.2021] 
本申请涉及移动通信领域,特别涉及一种侧行通信方法、装置、设备及存储介质。
背景技术
为了实现车联网(Vehicle to everything,V2X)系统中的终端与终端之间的直接通信,引入了侧行链路(Side Link,SL)传输方式。
随着侧行链路传输业务场景的进一步扩展,其广泛应用于车联网、智能工厂、家庭娱乐等场景,有限的频域资源会限制后期技术的演进,因此,需要考虑在免授权调度资源上进行侧行链路传输。
发明内容
[根据细则91更正 23.08.2021] 
本申请实施例提供了一种侧行通信方法、装置、设备及存储介质,提供了一种在免授权调度资源上执行LBT的方式进行侧行链路传输的技术方案。所述技术方案如下:
[根据细则91更正 23.08.2021] 
根据本申请的一个方面,提供了一种侧行通信方法,应用于侧行链路传输的第一终端中,所述方法包括:
在免授权调度资源上执行LBT;
在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
[根据细则91更正 23.08.2021] 
根据本申请的一个方面,提供了一种侧行通信方法,应用于侧行链路传输的第二终端中,所述方法包括:
接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
触发无线链路失败RLF。
根据本申请的一个方面,提供了一种侧行通信方法装置,用于实现侧行链路传输的第一终端,所述装置包括:
LBT模块,用于在免授权调度资源上执行LBT;
执行模块,用于在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
根据本申请的一个方面,提供了一种侧行通信方法装置,用于实现侧行链路传输的第二终端,所述装置包括:
第二接收模块,用于接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
触发模块,用于触发无线链路失败RLF。
根据本申请的一个方面,提供了一种终端,所述终端包括:处理器和与所述处理器相连的收发器;其中,
所述处理器,用于在免授权调度资源上执行LBT;
所述处理器,用于在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
根据本申请的一个方面,提供了一种终端,所述终端包括:处理器和与所述处理器相连的收发器;其中,
所述收发器,用于接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
所述处理器,用于触发无线链路失败RLF。
[根据细则91更正 23.08.2021] 
根据本申请的一个方面,提供了一种计算机可读存储介质,所述可读存储介质中存储有可执行指令,所述可执行指令由处理器加载并执行以实现如上述方面所述的侧行通信方法。
[根据细则91更正 23.08.2021] 
根据本申请实施例的一个方面,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,当所述芯片在计算机设备上运行时,用于实现上述方面所述的侧行通信方法。
[根据细则91更正 23.08.2021] 
根据本申请的一个方面,提供了一种计算机程序产品,该计算机程序产品在计算机设备的处理器上运行时,使得计算机设备执行上述方面所述的侧行通信方法。
本申请实施例提供的技术方案至少包括如下有益效果:
通过在免授权调度资源上执行LBT(Listen Before Talk,先听后说),基于LBT结果在免授权调度资源上选择可用资源进行侧行传输。当LBT失败时,第一终端通过执行目标操作来执行LBT恢复或频域重 选,以选择可用资源进行侧行传输。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本申请一个示例性实施例提供的传输模式的示意图;
图2是本申请一个示例性实施例提供的系统架构的示意图;
[根据细则91更正 23.08.2021] 
图3是本申请一个示例性实施例提供的侧行通信方法的方法流程图;
[根据细则91更正 23.08.2021] 
图4是本申请一个示例性实施例提供的侧行通信方法的方法流程图;
[根据细则91更正 23.08.2021] 
图5是本申请一个示例性实施例提供的侧行通信方法的方法流程图;
[根据细则91更正 23.08.2021] 
图6是本申请一个示例性实施例提供的侧行通信方法的方法流程图;
[根据细则91更正 23.08.2021] 
图7是本申请一个示例性实施例提供的侧行通信方法的方法流程图;
[根据细则91更正 23.08.2021] 
图8是本申请一个示例性实施例提供的侧行通信方法的方法流程图;
图9是本申请一个示例性实施例提供的侧行通信方法装置的结构框图;
图10是本申请一个示例性实施例提供的侧行通信方法装置的结构框图;
图11是本申请一个示例性实施例提供的通信设备的结构示意图。
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。
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。还应当理解,本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解,尽管在本公开可能采用术语第一、第二、第三等来描述各种信息,但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如,在不脱离本公开范围的情况下,第一信息也可以被称为第二信息,类似地,第二信息也可以被称为第一信息。取决于语境,如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
首先,对本申请实施例中涉及的名词进行简单介绍:
1、LTE(Long Term Evolution,长期演进)D2D(Device-to-Device,设备到设备通信)/V2X:
车联网(Vehicle to everything,V2X):是未来智能交通运输系统的关键技术,主要研究基于3GPP通信协议的车辆数据传输方案。V2X通信包括车与车(Vehicle to Vehicle,V2V)通信、车与路侧基础设施(Vehicle to Infrastructure,V2I)通信以及车与行人(Vehicle to People,V2P)通信。V2X应用将改善驾驶安全性、减少拥堵和车辆能耗、提高交通效率等。
侧行链路(Side Link,SL)传输:是一种设备到设备的通信方式,具有较高的频谱效率和较低的传输时延。设备到设备通信是一种侧行链路传输技术,与传统的蜂窝系统中通信数据通过网络设备接收或者发送的方式不同,车联网系统采用终端到终端直接通信的方式,因此具有更高的频谱效率以及更低的传输时延。在3GPP定义了侧行链路传输的两种传输模式:模式1和模式2。
如图1中的(1)所示的模式1:网络设备110为终端120配置传输资源,终端120在配置的传输资源上进行侧行链路的数据传输。
如图1中的(2)所示的模式2:网络设备110为终端120分配资源池,终端120在资源池中自行选取一个或多个传输资源进行侧行链路的数据传输。示例性的,终端120可以通过感知(sensing,或译为“侦听”、“监听”)的方式在资源池中选择传输资源,或者,通过随机选取的方式在资源池中选取传输资源。
在模式2下,终端依靠资源感知或者随机选择自行在网络设备配置或预配置的资源池(候选资源)中选取时频资源用于发送测性信息。因此,模式2资源分配更准确的描述应该为资源选择。
在NR(New Radio,新空口)V2X的SI阶段,曾经提出了4种模式2的资源分配方案,分别是模式 2a、模式2b、模式2c和模式2d。
模式2a是指,终端通过解码侧行控制信息以及测量侧行链路接收功率等方法,在资源池中自行选择没有被其他终端预留或被其他终端预留但接收功率较低的资源,从而降低资源碰撞概率,提升通信可靠性。模式2a整体上继承了LTE V2X模式4中资源选择机制的主体设计,基于资源预留、资源感知以及资源排除等操作进行资源选择。
模式2b是终端之间通过协作进行资源选择的模式,即终端发送辅助信息帮助其他终端完成资源选择。上述辅助信息可以是终端进行资源感知的资源感知结果,或者是建议其他终端使用的资源等。例如,终端C发送辅助信息给终端A和终端B,终端A和终端B利用辅助信息以及自身资源感知的感知结果在资源池中选择资源。
模式2c是指网络设备配置或者预配置给终端资源图案(pattern),终端利用资源图案中的资源发送初传和重传,达到降低发送时延的效果。网络设备配置的资源图案可以是一个或多个,当配置的资源图案为多个时,终端利用资源感知或者地理位置信息选择其中一个资源图案。
模式2d中终端直接为其他终端调度时频资源。
在本申请实施例中,第二终端(被调度终端)工作在模式2d下,第一终端(调度终端)可以工作在模式1下也可以工作在模式2下。
在3GPP中,D2D分成了不同的阶段进行研究。
ProSe(Proximity based Service,基于邻近的服务):在Rel-12/13中设备到设备通信,是针对ProSe的场景进行了研究,其主要针对公共安全类的业务。在ProSe中,通过配置资源池在时域上的位置,例如资源池在时域上非连续,达到UE(User Equipment,终端)在侧行链路上非连续发送/接收数据,从而达到省电的效果。
车联网(V2X):在Rel-14/15中,车联网系统针对车车通信的场景进行了研究,其主要面向相对高速移动的车车、车人通信的业务;在V2X中,由于车载系统具有持续的供电,因此功率效率不是主要问题,而数据传输的时延是主要问题,因此在系统设计上要求终端设备进行连续的发送和接收。
可穿戴设备(FeD2D):在Rel-14中,这个场景对于可穿戴设备通过手机接入网络的场景进行了研究,其主要面向是低移动速度以及低功率接入的场景。在FeD2D中,在预研阶段3GPP结论为网络设备可以通过一个relay(转发)终端去配置remote(偏远)终端的DRX(Discontinuous Reception,不连续接收)参数,但是由于该课题没有进一步进入标准化阶段,如何进行DRX配置的具体细节没有结论。
多载波:在Rel-15LTE V2X中,引入了多载波机制,具体地,多载波机制体现在UE可以支持数据包分割,用多个载波传输数据包,以提升数据传输率;数据包复制,将一个相同的数据包复制两份,用两个载波发送,以提升传输可靠性;以及接收端的多载波接收增强。具体地,针对数据包复制:V2X侧链通信支持侧链分组复制,并在UE的PDCP(Packet Data Convergence Protocol,分组数据汇聚协议)层执行。对于用于传输的侧链路分组复制,PDCP PDU(Protocol Data Unit,协议数据单元)在PDCP实体处被复制。同一PDCP实体的复制PDP(Packet Data Protocol,分组数据协议)PDU被提交给两个不同的RLC(Radio Link Control,无线链路层控制协议)实体并分别关联到两个不同的侧链逻辑信道。同一PDCP实体的复制PDP PDU只允许在不同的侧链载波上传输。UE可以基于(预)配置来激活或停用侧链分组复制。侧链数据包复制不适用于具有Rel(Release)-14传输配置文件(3GPP(3rd Generation Partnership Project,第三代合作伙伴计划)TS(Technical Specification,技术规范)23.285[72])的传输。支持侧链数据包复制的PPPR值可以通过PPPR阈值(预)配置。对于UE自主的资源选择和调度的资源分配,UE应对具有配置的PPPR值的数据执行侧链分组复制,直到为这些PPPR值取消分组复制配置为止。对于调度的资源分配,UE通过侧链BSR(Buffer Status Report,缓冲状态报告)报告与一个或多个PPPR值相关联的数据量以及数据所属的目的地。PPPR值到逻辑信道组的映射可以由eNB配置,并且PPPR值由包括在侧链BSR中的相关联的逻辑信道组ID(Identity Document,身份标识号)反映。一个或多个PPPR值的列表可以由一个RRC(Radio Resource Control,无线资源控制)连接的UE在侧链UE信息中报告。
2、NR V2X:
NR V2X在LTE V2X的基础上,不局限于广播场景,而是进一步拓展到了单播和组播的场景,在这些场景下研究V2X的应用。
类似于LTE V2X,NR V2X也会定义上述模式1和模式2两种资源授权模式;更进一步,终端可能处在一个混合的模式下,即既可以使用模式1进行资源的获取,又同时可以使用模式2进行资源的获取。该资源获取通过侧行链路授权的方式指示,即侧行链路授权指示相应的PSCCH(Physical Sidelink Control Channel,物理侧行链路控制信道)与PSSCH(Physical Sidelink Shared Channel,物理侧行链路共享信道)资源的时频位置。
不同于LTE V2X,除了无反馈的、UE自主发起的HARQ(Hybrid Automatic Repeat reQuest,混合自 动重传请求)重传,NR V2X引入了基于反馈的HARQ重传,不限于单播通信,也包括组播通信。
与LTE V2X相同,在NR V2X中,由于车载系统具有持续的供电,因此功率效率不是主要问题,而数据传输的时延是主要问题,因此在系统设计上要求终端设备进行连续的发送和接收。
LBT:gNB在动态或半静态信道接入模式下工作。在两种信道接入模式中,gNB和UE可以在配置有共享频谱信道接入的小区上执行传输之前应用先听后说(Listen Before Talk,LBT)。当应用LBT时,发射机(发送终端)监听/感知信道以确定信道是空闲还是忙,并且仅当感测到信道空闲时才执行传输。
当UE检测到一致的上行链路LBT故障时,它采取3GPP TS 38.321[6]中规定的措施。该检测是基于每个带宽部分(Bandwidth Part,BWP)并基于该BWP内的所有上行链路传输的。当在SCell(Secondary Cell,辅小区)上检测到一致的上行链路LBT故障时,UE在与检测到故障的SCell不同的服务小区上经由MACCE(Medium Access Control Control Element,媒体接入控制单元)将此报告给相应的gNB(MN(Master Node,主节点)用于MCG(Master Cell group,主小区组),SN(Secondary Node,辅节点)用于SCG(Secondary Cell group,辅小区组))。如果没有资源可用于传输MACCE,则UE可以传输调度请求(Scheduling Request,SR)。当在SpCell(special Cell,SpCell包括PCell和PSCell)上检测到一致的上行链路LBT故障时,UE切换到在该小区上配置了RACH(Random Access Channel,随机接入信道)资源的另一UL BWP(Bandwidth Part,带宽部分),发起RACH,并通过MACCE报告故障。当多个UL BWP可用于交换时,由UE实现选择哪一个。对于PSCell(Primary Secondary Cell,主辅小区),如果在配置了RACH资源的所有UL BWP上检测到一致的上行链路LBT故障,则UE声明SCG RLF(Radio Link Failure无线链路失败)并通过SCGFailureInformation(SCG失败信息)向MN报告故障。对于PCell,如果在具有配置的RACH资源的所有UL BWP上检测到上行链路LBT故障,则UE声明RLF。
图2示出了本申请一个示例性实施例提供的支持侧行链路传输的通信系统的框图。该通信系统可以是非漫游5G系统构架(Non-roaming 5G system architecture)的示意图,该系统构架可以应用于使用D2D(Device to Device,设备到设备)技术的车联网(Vehicle to everything,V2X)业务。
该系统架构包括数据网络(Data Network,DN),该数据网络中设置有V2X业务所需的V2X应用服务器(Application Server)。该系统构架还包括5G核心网,5G核心网的网络功能包括:统一数据管理(Unified Data Management,UDM)、策略控制功能(Policy Control Function,PCF)、网络开放功能(Network Exposure Function,NEF)、应用功能(Application Function,AF)、统一数据存储(Unified Data Repository,UDR)、接入和移动性管理功能(Access and Mobility Management Function,AMF)、会话管理功能(Session Management Function,SMF)以及用户面功能(User Plane Function,UPF)。
该系统构架还包括:无线接入网(New Generation-Radio Access Network,NG-RAN)以及示例性示出的4个终端(即终端1至终端4)。可选地,每个终端均设置有V2X应用(Application)或支持SL传输的应用。无线接入网中设置有一个或多个接入网设备(网络设备),比如基站(gNB)。
该系统构架中,数据网络与5G核心网中的用户面功能通过N6参考点(Reference Point)连接,V2X应用服务器与终端中的V2X应用通过V1参考点连接;无线接入网与5G核心网中的AMF功能以及UPF功能连接,无线接入网分别通过Uu参考点与终端1以及终端5连接;多个终端之间通过PC5参考点进行侧行链路传输,多个V2X应用之间通过V5参考点连接。上述参考点也可称为“接口”。
本公开实施例中的“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。本公开实施例描述的技术方案可以适用于5G NR系统,也可以适用于5G NR系统后续的演进系统。本公开实施例描述的技术方案可以适用于V2x应用,也可以适用于其他使用侧行链路传输的应用,如公共安全(public safety)和商业应用等。
[根据细则91更正 23.08.2021] 
请参考图3,其示出了本申请一个实施例提供的侧行通信方法的流程图,该方法可以应用于图2所示的系统架构中的任意一个终端(第一终端)。该方法包括如下步骤。
步骤210,在基于多载波的侧行传输场景中,第一终端在免授权调度资源上执行LBT。
第一终端为侧行链路传输中的发送终端。第一终端为支持多载波场景的终端,本申请实施例的方法应用于多载波场景下的侧行链路传输。
免授权调度资源是候选资源集中的资源。即,第一终端的候选资源集包括免授权调度资源。候选资源集是第一终端针对层二目标地址或逻辑信道或HARQ进程确定的资源集合。示例性的,候选资源集包括第一终端针对层二目标地址或逻辑信道或HARQ进程确定的载波集合上的资源。
示例性的,层二包括SDAP(Service Data Adaptation Protocol,服务数据适配协议)层、RRC层、PDCP层、RLC层、MAC(Medium Access Control,媒体接入控制)层中的至少一种。
可选的,候选资源集至少包括免授权调度资源(免授权载波上的资源),基于此,候选资源集还可以 包括授权资源(授权载波上的资源)。
示例性的,LBT是在BWP粒度上进行的。当一个载波包括一个BWP时,“在免授权调度资源上执行LBT”可以称之为在该载波上的BWP执行LBT,此时,免授权调度资源为该载波上的资源。当一个载波包括多个BWP时,“在免授权调度资源上执行LBT”可以称为在该载波上的一个BWP执行LBT,此时,免授权调度资源为该BWP上的资源。
步骤220,在免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
示例性的,触发LBT持续失败的方法如下:
第一终端LBT检测次数门限和LBT失败检测定时器是网络设备为第一终端配置的。第一终端的MAC层接收物理层(Physical Layer,PHY)传输的免授权调度资源的LBT失败指示;MAC层启动或重新启动LBT失败检测定时器,将LBT失败计数增加1;在LBT失败计数大于或等于LBT检测次数门限的情况下,MAC层确定在免授权调度资源上触发LBT持续失败。
网络设备为终端配置sl-lbt-FailureInstanceMaxCount(LBT检测次数门限),以及sl-lbt-FailureDetectionTimer(LBT失败检测定时器),第一终端(发送终端)的MAC层会维护SL_LBT_COUNTER(LBT失败计数)并初始化为0。当第一终端的低层(PHY)向MAC层发送LBT失败指示时,第一终端需要启动,或者重新启动sl-lbt-FailureDetectionTimer,同时将SL_LBT_COUNTER增加1,若SL_LBT_COUNTER>=sl-lbt-FailureInstanceMaxCount,MAC层会确认当前SL-BWP上触发LBT持续失败。
综上所述,本实施例提供的方法,通过在基于多载波的侧行传输场景中,在免授权调度资源上执行LBT,基于LBT结果在免授权调度资源上选择可用资源进行侧行传输。当LBT失败时,第一终端通过执行目标操作来执行LBT恢复或频域重选,以选择可用资源进行侧行传输。
示例性的,第一终端在LBT持续失败后所执行的目标操作包括频点切换、发送失败消息和LBT恢复中的至少一种。
1、频点切换,是指:
第一终端在候选资源集的一个BWP上触发LBT持续失败,此时,候选资源集中还存在未触发LBT持续失败的免授权载波的BWP,或,存在授权载波上的可用资源,则第一终端在候选资源集中重选资源进行侧行链路传输。
2、发送失败消息,是指:
第一终端在一个BWP上触发LBT持续失败,向第二终端(侧行链路传输的接收终端)发送LBT失败消息,以告知第二终端LBT失败。
3、LBT恢复,是指:
第一终端在候选资源集的全部载波的BWP上触发LBT持续失败,第一终端向网络设备发送LBT持续失败指示,以使网络设备重新配置新的候选资源集。
示例性的,在本申请实施例中上述三种目标操作可以任意组合,例如,第一终端可以在触发LBT持续失败时,执行上述三种目标操作,或,执行上述三种目标操作中的任一一种或两种。
下面分别对上述三种目标操作进行说明。
针对上述1、频点切换。
示例性的,第一终端对于层二目标地址/逻辑信道/HARQ进程确定了侧行链路传输的候选资源集。该候选资源集中包括免授权载波上的资源(免授权调度资源)。以第一终端的候选资源集中包括第一载波上的免授权调度资源和第二载波上的资源为例进行说明。其中,第一载波为免授权载波,第二载波为免授权载波集或授权载波。
考虑到一个载波上只有一个BWP,以及一个载波上具有多个BWP两种情况,本申请实施例提供了两种方式(1)和(2)。
[根据细则91更正 23.08.2021] 
(1)当一个载波上只有一个BWP时,请参考图4,其示出了本申请一个实施例提供的侧行通信方法的流程图,该方法可以应用于图2所示的系统架构中的任意一个终端(第一终端)。基于图3所示的示例性实施例,步骤210包括步骤211,步骤220包括步骤221。
步骤211,在基于多载波的侧行传输场景中,在第一载波的BWP上执行LBT。
步骤221,在第一载波的BWP上触发LBT持续失败的情况下,从第二载波中选择资源进行侧行链路传输。
示例性的,第一终端遍历候选资源集,以从候选资源集中选择可用资源进行侧行链路传输。当第一终端在第一载波的BWP上触发LBT持续失败,且候选资源集遍历未结束,则第一终端切换到下一个载波, 若该载波为免授权载波,则在该载波上继续执行LBT,若LBT成功则使用该载波上的可用资源进行侧行链路传输;若该载波为授权载波且存在可用资源,则使用该可用资源进行侧行链路的传输。第一终端遍历候选资源集的策略可以是任意的,本申请实施例对此不加以限定。
即:
在第二载波为免授权载波的情况下,第一终端在第二载波的BWP上执行LBT;在第二载波的BWP上触发LBT成功的情况下,在第二载波上选择可用资源进行侧行链路传输。在第二载波的BWP上触发LBT持续失败,且第一终端对候选资源集中的载波遍历结束的情况下,执行LBT恢复。在第二载波的BWP上触发LBT持续失败,且第一终端对候选资源集中的载波遍历未结束的情况下,从剩余未被遍历的载波中重新选择可用资源进行侧行链路传输。
在第二载波为授权载波的情况下,第一终端在第二载波上选择可用资源进行侧行链路传输。
示例性的,如果对于此层二目标地址/逻辑信道/HARQ进程并非所选的所有的载波上的SL-BWP都触发LBT持续失败,对于此层二目标地址/逻辑信道/HARQ进程会触发资源重选,进一步的资源重选会触发载波重选,第一终端的MAC实体会重选其他的免授权载波执行LBT并进行数据发送。
[根据细则91更正 23.08.2021] 
(2)当一个载波上可以有多个BWP时,请参考图5,其示出了本申请一个实施例提供的侧行通信方法的流程图,该方法可以应用于图2所示的系统架构中的任意一个终端(第一终端)。基于图3所示的示例性实施例,步骤210包括步骤212,步骤220包括步骤222。
步骤212,在基于多载波的侧行传输场景中,在第一BWP上执行LBT。
第一终端的候选资源集包括第一BWP上的免授权调度资源和第二BWP上的资源。
其中,第一BWP为第一载波上的BWP,第二BWP为第一载波上的BWP,或,第二BWP为第二载波上的BWP。
步骤222,在第一BWP上触发LBT持续失败的情况下,从第二BWP中选择资源进行侧行链路传输。
示例性的,第一终端遍历候选资源集,以从候选资源集中选择可用资源进行侧行链路传输。当第一终端在第一BWP上触发LBT持续失败,且候选资源集遍历未结束,则第一终端切换到下一个BWP,若该BWP所属的载波为免授权载波,则在该BWP上继续执行LBT,若LBT成功则使用该BWP上的可用资源进行侧行链路传输;若该BWP所属的载波为授权载波且该BWP上存在可用资源,则使用该可用资源进行侧行链路的传输。第一终端遍历候选资源集的策略可以是任意的,本申请实施例对此不加以限定。
即:
在第二BWP所属的载波为免授权载波的情况下,在第二BWP上执行LBT;在第二BWP上触发LBT成功的情况下,在第二BWP上选择可用资源进行侧行链路传输。在第二BWP上触发LBT持续失败,且第一终端对候选资源集中的BWP遍历结束的情况下,执行LBT恢复。在第二BWP上触发LBT持续失败,且第一终端对候选资源集中的BWP遍历未结束的情况下,从剩余未被遍历的BWP中重新选择可用资源进行侧行链路传输。
在第二BWP所属的载波为授权载波的情况下,在第二BWP上选择可用资源进行侧行链路传输。
综上所述,本实施例提供的方法,通过在LBT持续失败后,当候选资源集未被全部遍历时,切换到候选资源集中的另一个载波/BWP上,继续进行传输资源的选择,若所切换的载波为授权载波,则在授权载波上选择可用资源进行侧行链路传输;若所切换的载波为免授权载波,则继续执行LBT,以在LBT成功后,选择可用资源进行侧行链路传输。实现在多载波场景下,使用免授权资源进行侧行链路的传输。
针对上述2、发送失败消息。
[根据细则91更正 23.08.2021] 
请参考图6,其示出了本申请一个实施例提供的侧行通信方法的流程图,该方法可以应用于图2所示的系统架构中的任意一个终端(第一终端)。基于图3所示的示例性实施例,步骤220包括步骤223。
步骤223,在第一载波的BWP上触发LBT持续失败的情况下,在免授权调度资源上触发LBT持续失败的情况下,向第二终端发送LBT持续失败消息,LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息。
第二终端为侧行链路传输的接收终端。
其中,LBT持续失败信息包括LBT失败载波、LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
第一LBT持续失败指示用于告知第二终端LBT持续失败。
LBT失败载波为触发LBT持续失败的载波,例如,第一载波。LBT失败BWP为触发LBT持续失败的BWP,例如,第一BWP。目标切换载波为进行频点切换所切换到的载波,例如,第二载波。目标切换BWP为进行频点切换所切换到的BWP,例如,第二BWP。目标选择载波是第一终端最终选择的用于进行侧行链路传输的载波。目标选择BWP是第一终端最终选择的用于进行侧行链路传输的BWP。
LBT持续失败消息承载在MAC CE上。
示例性的,LBT持续失败消息中的第一LBT持续失败指示和LBT持续失败信息可以承载在同一个MAC CE上,也可以承载在不同的MAC CE上。
即,当LBT持续失败消息包括第一LBT持续失败指示和LBT持续失败信息时;一种情况下:第一LBT持续失败指示承载在第一MAC CE上,LBT持续失败信息承载在第二MAC CE上;另一种情况下:第一LBT持续失败指示和LBT持续失败信息承载在第三MAC CE上。
若针对某个载波/某个BWPMAC层触发了LBT持续失败时,针对单播,组播或者广播业务:
1)如果此时仍有可用的侧行链路资源且该可用资源足够安放LBT失败指示MAC CE及子头时,第一终端可以向第二终端发送LBT失败消息。
具体地,该LBT失败消息可以包含以下信息至少之一:LBT失败指示、LBT失败载波或载波集合、目标切换载波及第一终端准备切换以继续发送业务数据的载波。
即,在存在侧行链路传输的可用资源的情况下,第一终端在侧行链路传输的可用资源上向第二终端发送LBT持续失败消息。
2)如果此时没有可用的侧行链路资源时,第一终端可以考虑使用以下方式发送LBT持续失败消息:
2.1)第一终端可以向网络设备上报LBT请求协助(SL-BSR或RRC消息),由网络设备辅助执行LBT并通过COT(Channel Occupancy Time,信道占用时长)共享将该载波上的可用资源共享给第一终端,第一终端在网络设备执行LBT的调度的免授权调度资源上进行侧行链路传输的发送。
即,在不存在侧行链路传输的可用资源的情况下,第一终端向网络设备发送LBT请求协助;网络设备接收LBT请求协助,辅助执行LBT,通过COT共享向第一终端配置辅助免授权调度资源。第一终端接收网络设备通过COT共享为第一终端配置的辅助免授权调度资源,辅助免授权调度资源包括网络设备辅助执行LBT得到的可用资源;第一终端在辅助免授权调度资源上向第二终端发送LBT持续失败消息。
示例性的,LBT请求协助承载在SL-BSR或RRC消息中。
2.2)第一终端可以通过默认的授权载波上配置的发送资源池执行LBT失败消息的发送,示例性的,该发送资源池可以是模式2的候选资源池。
即,在不存在侧行链路传输的可用资源的情况下,通过默认授权载波上配置的候选资源池向第二终端发送LBT持续失败消息。
示例性的,候选资源池为模式2的候选资源池。
示例性的,默认授权载波中的“默认”翻译为“default”,默认授权载波是由网络设备配置得到的。该默认授权载波的配置可以通过以下方式配置:
2.21)对于单播连接,可以由第一终端与第二终端在单播连接建立时通过PC5-RRC消息协商。
即,对于第一终端的单播业务,默认授权载波是第一终端与第二终端建立连接时通过PC5-RRC消息协商确定的。
示例性的,网络设备为第一终端或第二终端配置默认授权载波,第一终端与第二终端建立连接时协商确定使用该默认授权载波。
2.22)对于单播,组播或广播,可以由网络设备进行配置,具体地,该配置粒度可以是层二目标地址/QoS(Quality of Service,服务质量)/逻辑信道。
即,对于第一终端的单播、组播或广播业务,默认授权载波是网络设备配置的。在第一终端处于单播、组播或广播的状态下,默认授权载波是网络设备基于层二目标地址、QoS或逻辑信道配置的。
2.3)当第一LBT持续失败指令和LBT持续失败信息分别承载在两个MAC CE上发送时,第一个MAC CE可以使用2.1)、2.2)所示的方式进行发送,而第二个MAC CE的资源可以由第二终端为第一终端调度。
发送LBT持续失败消息的资源可以由第二终端提供,示例性的,网络设备可以为第二终端配置第一LBT定时器,当第一LBT定时器超时且第二终端在第一LBT定时器运行时段内并未收取到任何由第一终端发送的数据包时,第二终端向第一终端调度一个sidelink grant(侧行授权资源),第一终端如果发生了LBT failure(LBT持续失败),则第一终端可以用该sidelink grant发送LBT持续失败消息给第二终端。
示例性的,第一LBT持续失败指示承载在第一MAC CE上,LBT持续失败信息承载在第二MAC CE上。第一终端向第二终端发送第一MAC CE,第一MAC CE包括第一LBT持续失败指示。第二终端接收第一终端发送的第一MAC CE,第一MAC CE承载有第一LBT持续失败指示;响应第一MAC CE,第二终端启动第一LBT定时器,第一LBT定时器是网络设备为第二终端配置的;在第一LBT定时器超时,且未接收到第一终端发送的侧行链路传输数据的情况下,向第一终端调度侧行授权资源;其中,侧行授权资源用于发送LBT持续失败信息。第一终端接收第二终端为第一终端调度的侧行授权资源,侧行授权资源是第二终端在第一LBT定时器超时且未接收到第一终端发送的侧行链路传输数据的情况下为第一终端调度的,第一LBT定时器是在第二终端接收到第一MAC CE时启动的;在侧行传输资源上向第二终端发送第 二MAC CE,第二MAC CE包括LBT持续失败信息。
综上所述,本实施例提供的方法,通过在触发LBT持续失败后,第一终端向第二终端发送LBT持续失败消息,以告知第二终端LBT持续失败,以及LBT持续失败的载波、BWP或载波集合、BWP集合,并向第二终端指示目标切换载波或目标切换BWP,使第二终端对LBT持续失败作出响应,以实现在免授权调度资源上进行侧行链路传输。
示例性的,基于上述的“2、发送失败消息”,第二终端在接收到LBT持续失败消息后,可以触发无线链路失败(RLF)。
[根据细则91更正 23.08.2021] 
请参考图7,其示出了本申请一个实施例提供的侧行通信方法的流程图,该方法可以应用于图2所示的系统架构中的任意一个终端(第二终端)。该方法包括以下步骤:
步骤310,第二终端接收第一终端发送的先听后说LBT持续失败消息,LBT持续失败消息是第一终端在免授权调度资源上触发LBT持续失败后发送的。
LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;其中,LBT持续失败信息包括LBT失败载波、或LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP中的至少一种。
示例性的,第一终端与第二终端单播连接。
步骤320,第二终端触发RLF。
网络设备可以为第二终端配置第二LBT定时器。当第二终端接收到第一终端所发送的LBT持续失败消息时,若第一终端在LBT持续失败消息中配置了目标切换载波/目标切换BWP/默认授权载波,第二终端会启动第二LBT定时器,当第二LBT定时器超时且第二终端没有接收到第一终端在所指示的目标切换载波/目标切换BWP/默认授权载波上发送的新传数据时,第二终端会触发RLF。
即,LBT持续失败消息包括目标切换载波或目标切换BWP。第二终端接收网络设备为第二终端配置的第二LBT定时器。响应LBT持续失败消息,第二终端启动第二LBT定时器;在第二LBT定时器超时,且第二终端未接收到第一终端在目标传输资源上发送的侧行链路传输数据的情况下,第二终端触发RLF;其中,目标传输资源包括目标切换载波、目标切换BWP、默认授权载波中的至少一种。
当第一终端在当前载波触发了LBT持续失败,且第一终端并未被配置可用于切换的目标切换载波/目标切换BWP/默认授权载波,则第一终端在发送LBT持续失败消息时,不会在该LBT持续失败消息中携带切换载波的指示,则第二终端在接收到该LBT持续失败消息时,会立刻触发RLF。
即,LBT持续失败消息不包括目标切换载波或目标切换BWP;响应LBT持续失败消息,触发RLF。
综上所述,本实施例提供的方法,第二终端在接收到第一终端发送的LBT持续失败消息后,若LBT持续失败消息中指示了目标切换载波或目标切换BWP或默认授权载波,则第二终端开启定时器,若在定时器超时前,未接收到第一终端发送的数据包,则第一终端触发RLF;若LBT持续失败消息中未指示目标切换载波或目标切换BWP或默认授权载波,则第二终端在接收到LBT持续失败消息时触发RLF。
针对上述3、LBT恢复。
[根据细则91更正 23.08.2021] 
请参考图8,其示出了本申请一个实施例提供的侧行通信方法的流程图,该方法可以应用于图2所示的系统架构中的任意一个终端(第一终端)。基于图3所示的示例性实施例,步骤220包括步骤224。
步骤210,在基于多载波的侧行传输场景中,在免授权调度资源上执行LBT,免授权调度资源为候选资源集中的全部载波上的资源。
步骤224,在候选资源集的全部BWP上都触发LBT持续失败的情况下,向网络设备发送第二LBT持续失败指示。
示例性的,第二LBT持续失败指示承载在RRC信令上。第二LBT持续失败指示包括MAC层针对层二目标地址或逻辑信道或HARQ进程所确定的候选资源集。
当对于此层二目标地址/逻辑信道/HARQ进程所选的所有的载波上的SL-BWP上都触发LBT持续失败时,MAC层会将LBT持续失败上报给高层。当RRC层接收到MAC层上报的第三LBT持续失败指示时,会通过RRC信令将对于此destination ID(目标地址)的第二LBT持续失败指示通过上行资源上报给网络设备,进一步的,第二LBT持续失败指示可以关联MAC层针对此destination ID所选的载波集合。网络设备可以针对此destination ID重新配置载波集合。
即,在候选资源集的全部BWP上都触发LBT持续失败的情况下,第一终端的MAC层向RRC层传输第三LBT持续失败指示;在RRC层接收到MAC层发送的第三LBT持续失败指示的情况下,RRC层通过RRC信令向网络设备发送第二LBT持续失败指示。
示例性的,在步骤224之后,第一终端还可以接收网络设备为侧行链路传输配置的传输资源。在新配 置的传输资源中选择资源进行侧行链路传输。
综上所述,本实施例提供的方法,通过在候选资源集中的所有载波上的BWP都触发LBT持续失败后,向网络设备发送LBT持续失败指示,以使网络设备为第一终端重新配置载波,以用于侧行链路传输,进而使第一终端在免授权调度资源上执行LBT失败后,可以依据网络设备重新配置的资源完成侧行链路传输。
图9示出了本申请一个示例性实施例提供的侧行通信方法装置的结构框图,该装置用于实现侧行链路传输的第一终端,或,第一终端内的一个或多个模块,所述装置包括:
LBT模块401,用于在免授权调度资源上执行先听后说LBT;
执行模块402,用于在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
在一种可选的实施例中,所述装置还包括:
MAC模块403,用于所述第一终端的媒体接入控制MAC层接收物理层PHY传输的所述免授权调度资源的LBT失败指示;
所述MAC模块403,用于所述MAC层启动或重新启动LBT失败检测定时器,将LBT失败计数增加1;
所述MAC模块403,用于在所述LBT失败计数大于或等于LBT检测次数门限的情况下,所述MAC层确定在所述免授权调度资源上触发所述LBT持续失败。
在一种可选的实施例中,所述装置还包括:
所述LBT检测次数门限和所述LBT失败检测定时器是网络设备为所述第一终端配置的。
在一种可选的实施例中,所述目标操作包括频点切换、发送失败消息和LBT恢复中的至少一种。
在一种可选的实施例中,所述目标操作包括所述频点切换,所述第一终端的候选资源集包括第一载波上的所述免授权调度资源和第二载波上的资源;所述执行模块402包括重选子模块405;
所述LBT模块401,用于在所述第一载波的带宽部分BWP上执行LBT;
所述重选子模块405,用于在所述第一载波的BWP上触发所述LBT持续失败的情况下,从所述第二载波中选择资源进行所述侧行链路传输。
在一种可选的实施例中,所述重选子模块405,用于在所述第二载波为免授权载波的情况下,在所述第二载波的BWP上执行LBT;在所述第二载波的BWP上触发LBT成功的情况下,在所述第二载波上选择可用资源进行所述侧行链路传输;
或,
所述重选子模块405,用于在所述第二载波为授权载波的情况下,在所述第二载波上选择所述可用资源进行所述侧行链路传输。
在一种可选的实施例中,所述目标操作包括所述频点切换,所述第一终端的候选资源集包括第一BWP上的所述免授权调度资源和第二BWP上的资源;所述执行模块402包括重选子模块405;
所述LBT模块401,用于在所述第一BWP上执行LBT;
所述重选子模块405,用于在所述第一BWP上触发所述LBT持续失败的情况下,从所述第二BWP中选择资源进行所述侧行链路传输;
其中,所述第一BWP为第一载波上的BWP,所述第二BWP为所述第一载波或第二载波上的BWP。
在一种可选的实施例中,所述重选子模块405,用于在所述第二BWP所属的载波为免授权载波的情况下,在所述第二BWP上执行LBT;在所述第二BWP上触发LBT成功的情况下,在所述第二BWP上选择可用资源进行所述侧行链路传输;
或,
所述重选子模块405,用于在所述第二BWP所属的载波为授权载波的情况下,在所述第二BWP上选择可用资源进行所述侧行链路传输。
在一种可选的实施例中,所述目标操作包括所述发送失败消息,所述侧行链路传输还包括第二终端;所述执行模块402包括发送子模块406;
所述发送子模块406,用于在所述免授权调度资源上触发LBT持续失败的情况下,向所述第二终端发送LBT持续失败消息,所述LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;
其中,所述LBT持续失败信息包括LBT失败载波、LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
在一种可选的实施例中,所述LBT持续失败消息承载在媒体接入控制单元MAC CE上。
在一种可选的实施例中,所述LBT持续失败消息包括所述第一LBT持续失败指示和所述LBT持续失败信息;
所述第一LBT持续失败指示承载在第一MAC CE上,所述LBT持续失败信息承载在第二MAC CE 上;
或,
所述第一LBT持续失败指示和所述LBT持续失败信息承载在第三MAC CE上。
在一种可选的实施例中,所述发送子模块406,用于在存在所述侧行链路传输的可用资源的情况下,在所述侧行链路传输的可用资源上向所述第二终端发送所述LBT持续失败消息。
在一种可选的实施例中,所述装置还包括:
所述发送子模块406,用于在不存在所述侧行链路传输的可用资源的情况下,向网络设备发送LBT请求协助;
第一接收模块404,用于接收所述网络设备通过信道占用时长COT共享为所述第一终端配置的辅助免授权调度资源,所述辅助免授权调度资源包括所述网络设备辅助执行LBT得到的可用资源;
所述发送子模块406,用于在所述辅助免授权调度资源上向所述第二终端发送所述LBT持续失败消息。
在一种可选的实施例中,所述LBT请求协助承载在侧行链路-缓存状态报告SL-BSR或无线资源控制RRC消息中。
在一种可选的实施例中,所述发送子模块406,用于在不存在所述侧行链路传输的可用资源的情况下,通过默认授权载波上配置的候选资源池向所述第二终端发送所述LBT持续失败消息。
在一种可选的实施例中,所述候选资源池为模式2的候选资源池。
在一种可选的实施例中,对于所述第一终端的单播业务,所述默认授权载波是所述第一终端与第二终端建立连接时通过PC5-RRC消息协商确定的。
在一种可选的实施例中,对于所述第一终端的单播、组播或广播业务,所述默认授权载波是网络设备配置的。
在一种可选的实施例中,在所述第一终端处于单播、组播或广播的状态下,所述默认授权载波是网络设备基于层二目标地址、服务质量QoS或逻辑信道配置的。
在一种可选的实施例中,所述第一LBT持续失败指示承载在所述第一MAC CE上,所述LBT持续失败信息承载在所述第二MAC CE上;所述装置还包括:
第一接收模块404,用于接收所述第二终端为所述第一终端调度的侧行授权资源,所述侧行授权资源是所述第二终端在第一LBT定时器超时且未接收到所述第一终端发送的侧行链路传输数据的情况下为所述第一终端调度的,所述第一LBT定时器是在所述第二终端接收到所述第一MAC CE时启动的;
所述发送子模块406,用于向所述第二终端发送所述第一MAC CE,所述第一MAC CE包括所述第一LBT持续失败指示;
所述发送子模块406,用于在所述侧行传输资源上向所述第二终端发送所述第二MAC CE,所述第二MAC CE包括所述LBT持续失败信息。
在一种可选的实施例中,所述目标操作包括所述LBT恢复,所述免授权调度资源为候选资源集中的全部载波上的资源;所述执行模块402包括:发送子模块406;
所述发送子模块406,用于在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,向网络设备发送第二LBT持续失败指示。
在一种可选的实施例中,所述第二LBT持续失败指示承载在无线资源控制RRC信令上。
在一种可选的实施例中,所述第二LBT持续失败指示包括媒体介入控制MAC层针对层二目标地址或逻辑信道或混合自动重传进程HARQ进程所确定的所述候选资源集。
在一种可选的实施例中,所述装置还包括:
第一接收模块404,用于接收所述网络设备为所述侧行链路传输配置的传输资源。
在一种可选的实施例中,所述装置还包括:
MAC模块403,用于在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,所述第一终端的MAC层向RRC层传输第三LBT持续失败指示;
所述发送子模块406,用于在所述RRC层接收到所述MAC层发送的所述第三LBT持续失败指示的情况下,所述RRC层通过RRC信令向所述网络设备发送所述第二LBT持续失败指示。
在一种可选的实施例中,所述第一终端的候选资源集包括所述免授权调度资源,所述候选资源集包括所述第一终端针对层二目标地址或逻辑信道或HARQ进程确定的资源集合。
图10示出了本申请一个示例性实施例提供的侧行通信方法装置的结构框图,该装置用于实现侧行链路传输的第二终端,或,第二终端内的一个或多个模块,所述装置包括:
第二接收模块501,用于接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
触发模块502,用于触发无线链路失败RLF。
在一种可选的实施例中,所述LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;
其中,所述LBT持续失败信息包括LBT失败载波、或LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
在一种可选的实施例中,所述LBT持续失败消息包括所述目标切换载波或所述目标切换BWP;所述装置还包括:
定时模块503,用于响应所述LBT持续失败消息,启动第二LBT定时器;
所述触发模块502,用于在所述第二LBT定时器超时,且未接收到所述第一终端在目标传输资源上发送的侧行链路传输数据的情况下,触发所述RLF;
其中,所述目标传输资源包括所述目标切换载波、所述目标切换BWP、默认授权载波中的至少一种。
在一种可选的实施例中,所述第二接收模块501,用于接收网络设备为所述第二终端配置的所述第二LBT定时器。
在一种可选的实施例中,所述LBT持续失败消息不包括所述目标切换载波或所述目标切换BWP;
所述触发模块502,用于响应所述LBT持续失败消息,触发所述RLF。
在一种可选的实施例中,所述LBT持续失败消息包括所述第一LBT持续失败指示和所述LBT持续失败信息;所述装置还包括:
所述第二接收模块501,用于接收所述第一终端发送的第一MAC CE,所述第一MAC CE承载有所述第一LBT持续失败指示;
定时模块503,用于响应所述第一MAC CE,启动第一LBT定时器,所述第一LBT定时器是网络设备为所述第二终端配置的;
调度模块504,用于在所述第一LBT定时器超时,且未接收到所述第一终端发送的侧行链路传输数据的情况下,向所述第一终端调度侧行授权资源;
其中,所述侧行授权资源用于发送所述LBT持续失败信息。
图11示出了本申请一个示例性实施例提供的通信设备(终端或网络设备)的结构示意图,该通信设备包括:处理器101、接收器102、发射器103、存储器104和总线105。
处理器101包括一个或者一个以上处理核心,处理器101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102和发射器103可以实现为一个通信组件,该通信组件可以是一块通信芯片。
存储器104通过总线105与处理器101相连。
存储器104可用于存储至少一个指令,处理器101用于执行该至少一个指令,以实现上述方法实施例中的各个步骤。
此外,存储器104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:磁盘或光盘,电可擦除可编程只读存储器(Electrically-Erasable Programmable Read Only Memory,EEPROM),可擦除可编程只读存储器(Erasable Programmable Read Only Memory,EPROM),静态随时存取存储器(Static Random Access Memory,SRAM),只读存储器(Read-Only Memory,ROM),磁存储器,快闪存储器,可编程只读存储器(Programmable Read-Only Memory,PROM)。
其中,当通信设备实现为终端时,本申请实施例涉及的通信设备中的处理器和收发器,可以执行上述任一所示的方法中,由终端执行的步骤,此处不再赘述。
在一种可能的实现方式中,当通信设备实现为第一终端时,
所述处理器,用于所述处理器,用于在免授权调度资源上执行LBT;在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
在一种可能的实现方式中,当通信设备实现为第二终端时,
所述接收器,用于接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
所述处理器,用于触发无线链路失败RLF。
[根据细则91更正 23.08.2021] 
在示例性实施例中,还提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,所述至少一条指令、所述至少一段程序、所述代码集或指令集由处理器加载并执行以实现上述各个方法实施例提供的由通信设备执行的侧行通信方法。
[根据细则91更正 23.08.2021] 
在示例性实施例中,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 计算机设备上运行时,用于实现上述方面所述的侧行通信方法。
[根据细则91更正 23.08.2021] 
在示例性实施例中,还提供了一种计算机程序产品,该计算机程序产品在计算机设备的处理器上运行时,使得计算机设备执行上述方面所述的侧行通信方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上所述仅为本申请的可选实施例,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 (68)

  1. [根据细则91更正 23.08.2021]
    一种侧行通信方法,其特征在于,应用于侧行链路传输的第一终端中,所述方法包括:
    在免授权调度资源上执行先听后说LBT;
    在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述第一终端的媒体接入控制MAC层接收物理层PHY传输的所述免授权调度资源的LBT失败指示;
    所述MAC层启动或重新启动LBT失败检测定时器,将LBT失败计数增加1;
    在所述LBT失败计数大于或等于LBT检测次数门限的情况下,所述MAC层确定在所述免授权调度资源上触发所述LBT持续失败。
  3. 根据权利要求2所述的方法,其特征在于,
    所述LBT检测次数门限和所述LBT失败检测定时器是网络设备为所述第一终端配置的。
  4. 根据权利要求1至3任一所述的方法,其特征在于,所述目标操作包括频点切换、发送失败消息和LBT恢复中的至少一种。
  5. 根据权利要求4所述的方法,其特征在于,所述目标操作包括所述频点切换,所述第一终端的候选资源集包括第一载波上的所述免授权调度资源和第二载波上的资源;
    所述在免授权调度资源上执行先听后说LBT,包括:
    在所述第一载波的带宽部分BWP上执行LBT;
    所述在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作,包括:
    在所述第一载波的BWP上触发所述LBT持续失败的情况下,从所述第二载波中选择资源进行所述侧行链路传输。
  6. 根据权利要求5所述的方法,其特征在于,所述从所述第二载波中选择资源进行所述侧行链路传输,包括:
    在所述第二载波为免授权载波的情况下,在所述第二载波的BWP上执行LBT;在所述第二载波的BWP上触发LBT成功的情况下,在所述第二载波上选择可用资源进行所述侧行链路传输;
    或,
    在所述第二载波为授权载波的情况下,在所述第二载波上选择所述可用资源进行所述侧行链路传输。
  7. 根据权利要求4所述的方法,其特征在于,所述目标操作包括所述频点切换,所述第一终端的候选资源集包括第一BWP上的所述免授权调度资源和第二BWP上的资源;
    所述在免授权调度资源上执行先听后说LBT,包括:
    在所述第一BWP上执行LBT;
    所述在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作,包括:
    在所述第一BWP上触发所述LBT持续失败的情况下,从所述第二BWP中选择资源进行所述侧行链路传输;
    其中,所述第一BWP为第一载波上的BWP,所述第二BWP为所述第一载波或第二载波上的BWP。
  8. 根据权利要求7所述的方法,其特征在于,所述从所述第二BWP中选择资源进行所述侧行链路传输,包括:
    在所述第二BWP所属的载波为免授权载波的情况下,在所述第二BWP上执行LBT;在所述第二BWP上触发LBT成功的情况下,在所述第二BWP上选择可用资源进行所述侧行链路传输;
    或,
    在所述第二BWP所属的载波为授权载波的情况下,在所述第二BWP上选择可用资源进行所述侧行链路传输。
  9. 根据权利要求4所述的方法,其特征在于,所述目标操作包括所述发送失败消息,所述侧行链路传输还包括第二终端;
    所述在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作,包括:
    在所述免授权调度资源上触发LBT持续失败的情况下,向所述第二终端发送LBT持续失败消息,所述LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;
    其中,所述LBT持续失败信息包括LBT失败载波、LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
  10. 根据权利要求9所述的方法,其特征在于,所述LBT持续失败消息承载在媒体接入控制单元MAC CE上。
  11. 根据权利要求10所述的方法,其特征在于,所述LBT持续失败消息包括所述第一LBT持续失败指示和所述LBT持续失败信息;
    所述第一LBT持续失败指示承载在第一MAC CE上,所述LBT持续失败信息承载在第二MAC CE上;
    或,
    所述第一LBT持续失败指示和所述LBT持续失败信息承载在第三MAC CE上。
  12. 根据权利要求9所述的方法,其特征在于,所述向所述第二终端发送LBT持续失败消息,包括:
    在存在所述侧行链路传输的可用资源的情况下,在所述侧行链路传输的可用资源上向所述第二终端发送所述LBT持续失败消息。
  13. 根据权利要求9所述的方法,其特征在于,所述方法还包括:
    在不存在所述侧行链路传输的可用资源的情况下,向网络设备发送LBT请求协助;
    接收所述网络设备通过信道占用时长COT共享为所述第一终端配置的辅助免授权调度资源,所述辅助免授权调度资源包括所述网络设备辅助执行LBT得到的可用资源;
    所述向所述第二终端发送LBT持续失败消息,包括:
    在所述辅助免授权调度资源上向所述第二终端发送所述LBT持续失败消息。
  14. 根据权利要求13所述的方法,其特征在于,所述LBT请求协助承载在侧行链路-缓存状态报告SL-BSR或无线资源控制RRC消息中。
  15. 根据权利要求9所述的方法,其特征在于,所述向所述第二终端发送LBT持续失败消息,包括:
    在不存在所述侧行链路传输的可用资源的情况下,通过默认授权载波上配置的候选资源池向所述第二终端发送所述LBT持续失败消息。
  16. 根据权利要求15所述的方法,其特征在于,所述候选资源池为模式2的候选资源池。
  17. 根据权利要求15所述的方法,其特征在于,对于所述第一终端的单播业务,所述默认授权载波是所述第一终端与第二终端建立连接时通过PC5-RRC消息协商确定的。
  18. 根据权利要求15所述的方法,其特征在于,对于所述第一终端的单播、组播或广播业务,所述默认授权载波是网络设备配置的。
  19. 根据权利要求15所述的方法,其特征在于,在所述第一终端处于单播、组播或广播的状态下,所述默认授权载波是网络设备基于层二目标地址、服务质量QoS或逻辑信道配置的。
  20. 根据权利要求11所述的方法,其特征在于,所述第一LBT持续失败指示承载在所述第一MAC CE上,所述LBT持续失败信息承载在所述第二MAC CE上;所述方法还包括:
    接收所述第二终端为所述第一终端调度的侧行授权资源,所述侧行授权资源是所述第二终端在第一LBT定时器超时且未接收到所述第一终端发送的侧行链路传输数据的情况下为所述第一终端调度的,所述第一LBT定时器是在所述第二终端接收到所述第一MAC CE时启动的;
    所述向所述第二终端发送LBT持续失败消息,包括:
    向所述第二终端发送所述第一MAC CE,所述第一MAC CE包括所述第一LBT持续失败指示;
    在所述侧行传输资源上向所述第二终端发送所述第二MAC CE,所述第二MAC CE包括所述LBT持续失败信息。
  21. 根据权利要求4所述的方法,其特征在于,所述目标操作包括所述LBT恢复,所述免授权调度资源为候选资源集中的全部载波上的资源;
    所述在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作,包括:
    在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,向网络设备发送第二LBT持续失败指示。
  22. 根据权利要求21所述的方法,其特征在于,所述第二LBT持续失败指示承载在无线资源控制RRC信令上。
  23. 根据权利要求21所述的方法,其特征在于,所述第二LBT持续失败指示包括媒体介入控制MAC层针对层二目标地址或逻辑信道或混合自动重传进程HARQ进程所确定的所述候选资源集。
  24. 根据权利要求21所述的方法,其特征在于,所述在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,向网络设备发送第二LBT持续失败指示之后,还包括:
    接收所述网络设备为所述侧行链路传输配置的传输资源。
  25. 根据权利要求21所述的方法,其特征在于,所述方法还包括:
    在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,所述第一终端的MAC层向RRC层传输第三LBT持续失败指示;
    所述在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,向网络设备发送第二LBT持续失败指示,包括:
    在所述RRC层接收到所述MAC层发送的所述第三LBT持续失败指示的情况下,所述RRC层通过RRC信令向所述网络设备发送所述第二LBT持续失败指示。
  26. 根据权利要1至3任一所述的方法,其特征在于,所述第一终端的候选资源集包括所述免授权调度资源,所述候选资源集包括所述第一终端针对层二目标地址或逻辑信道或HARQ进程确定的资源集合。
  27. [根据细则91更正 23.08.2021]
    一种侧行通信方法,其特征在于,应用于侧行链路传输的第二终端中,所述方法包括:
    接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
    触发无线链路失败RLF。
  28. 根据权利要求27所述的方法,其特征在于,所述LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;
    其中,所述LBT持续失败信息包括LBT失败载波、或LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
  29. 根据权利要求28所述的方法,其特征在于,所述LBT持续失败消息包括所述目标切换载波或所述目标切换BWP;所述方法还包括:
    响应所述LBT持续失败消息,启动第二LBT定时器;
    所述触发无线链路失败RLF,包括:
    在所述第二LBT定时器超时,且未接收到所述第一终端在目标传输资源上发送的侧行链路传输数据的情况下,触发所述RLF;
    其中,所述目标传输资源包括所述目标切换载波、所述目标切换BWP、默认授权载波中的至少一种。
  30. 根据权利要求29所述的方法,其特征在于,所述方法还包括:
    接收网络设备为所述第二终端配置的所述第二LBT定时器。
  31. 根据权利要求28所述的方法,其特征在于,所述LBT持续失败消息不包括所述目标切换载波或所述目标切换BWP;
    所述触发无线链路失败RLF,包括:
    响应所述LBT持续失败消息,触发所述RLF。
  32. 根据权利要求28所述的方法,其特征在于,所述LBT持续失败消息包括所述第一LBT持续失败指示和所述LBT持续失败信息;
    所述接收第一终端发送的先听后说LBT持续失败消息,包括:
    接收所述第一终端发送的第一MAC CE,所述第一MAC CE承载有所述第一LBT持续失败指示;
    所述方法还包括:
    响应所述第一MAC CE,启动第一LBT定时器,所述第一LBT定时器是网络设备为所述第二终端配置的;
    在所述第一LBT定时器超时,且未接收到所述第一终端发送的侧行链路传输数据的情况下,向所述第一终端调度侧行授权资源;
    其中,所述侧行授权资源用于发送所述LBT持续失败信息。
  33. 一种侧行通信方法装置,其特征在于,用于实现侧行链路传输的第一终端,所述装置包括:
    LBT模块,用于在免授权调度资源上执行先听后说LBT;
    执行模块,用于在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
  34. 根据权利要求33所述的装置,其特征在于,所述装置还包括:
    MAC模块,用于所述第一终端的媒体接入控制MAC层接收物理层PHY传输的所述免授权调度资源的LBT失败指示;
    所述MAC模块,用于所述MAC层启动或重新启动LBT失败检测定时器,将LBT失败计数增加1;
    所述MAC模块,用于在所述LBT失败计数大于或等于LBT检测次数门限的情况下,所述MAC层确定在所述免授权调度资源上触发所述LBT持续失败。
  35. 根据权利要求34所述的装置,其特征在于,所述LBT检测次数门限和所述LBT失败检测定时器是网络设备为所述第一终端配置的。
  36. 根据权利要求33至35任一所述的装置,其特征在于,所述目标操作包括频点切换、发送失败消息和LBT恢复中的至少一种。
  37. 根据权利要求36所述的装置,其特征在于,所述目标操作包括所述频点切换,所述第一终端的候选资源集包括第一载波上的所述免授权调度资源和第二载波上的资源;所述执行模块包括重选子模块;
    所述LBT模块,用于在所述第一载波的带宽部分BWP上执行LBT;
    所述重选子模块,用于在所述第一载波的BWP上触发所述LBT持续失败的情况下,从所述第二载波中选择资源进行所述侧行链路传输。
  38. 根据权利要求37所述的装置,其特征在于,
    所述重选子模块,用于在所述第二载波为免授权载波的情况下,在所述第二载波的BWP上执行LBT;在所述第二载波的BWP上触发LBT成功的情况下,在所述第二载波上选择可用资源进行所述侧行链路传输;
    或,
    所述重选子模块,用于在所述第二载波为授权载波的情况下,在所述第二载波上选择所述可用资源进行所述侧行链路传输。
  39. 根据权利要求36所述的装置,其特征在于,所述目标操作包括所述频点切换,所述第一终端的候选资源集包括第一BWP上的所述免授权调度资源和第二BWP上的资源;所述执行模块包括重选子模块;
    所述LBT模块,用于在所述第一BWP上执行LBT;
    所述重选子模块,用于在所述第一BWP上触发所述LBT持续失败的情况下,从所述第二BWP中选择资源进行所述侧行链路传输;
    其中,所述第一BWP为第一载波上的BWP,所述第二BWP为所述第一载波或第二载波上的BWP。
  40. 根据权利要求39所述的装置,其特征在于,
    所述重选子模块,用于在所述第二BWP所属的载波为免授权载波的情况下,在所述第二BWP上执行LBT;在所述第二BWP上触发LBT成功的情况下,在所述第二BWP上选择可用资源进行所述侧行链路 传输;
    或,
    所述重选子模块,用于在所述第二BWP所属的载波为授权载波的情况下,在所述第二BWP上选择可用资源进行所述侧行链路传输。
  41. 根据权利要求36所述的装置,其特征在于,所述目标操作包括所述发送失败消息,所述侧行链路传输还包括第二终端;所述执行模块包括发送子模块;
    所述发送子模块,用于在所述免授权调度资源上触发LBT持续失败的情况下,向所述第二终端发送LBT持续失败消息,所述LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;
    其中,所述LBT持续失败信息包括LBT失败载波、LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
  42. 根据权利要求41所述的装置,其特征在于,所述LBT持续失败消息承载在媒体接入控制单元MAC CE上。
  43. 根据权利要求42所述的装置,其特征在于,所述LBT持续失败消息包括所述第一LBT持续失败指示和所述LBT持续失败信息;
    所述第一LBT持续失败指示承载在第一MAC CE上,所述LBT持续失败信息承载在第二MAC CE上;
    或,
    所述第一LBT持续失败指示和所述LBT持续失败信息承载在第三MAC CE上。
  44. 根据权利要求41所述的装置,其特征在于,
    所述发送子模块,用于在存在所述侧行链路传输的可用资源的情况下,在所述侧行链路传输的可用资源上向所述第二终端发送所述LBT持续失败消息。
  45. 根据权利要求41所述的装置,其特征在于,所述装置还包括:
    所述发送子模块,用于在不存在所述侧行链路传输的可用资源的情况下,向网络设备发送LBT请求协助;
    第一接收模块,用于接收所述网络设备通过信道占用时长COT共享为所述第一终端配置的辅助免授权调度资源,所述辅助免授权调度资源包括所述网络设备辅助执行LBT得到的可用资源;
    所述发送子模块,用于在所述辅助免授权调度资源上向所述第二终端发送所述LBT持续失败消息。
  46. 根据权利要求45所述的装置,其特征在于,所述LBT请求协助承载在侧行链路-缓存状态报告SL-BSR或无线资源控制RRC消息中。
  47. 根据权利要求41所述的装置,其特征在于,
    所述发送子模块,用于在不存在所述侧行链路传输的可用资源的情况下,通过默认授权载波上配置的候选资源池向所述第二终端发送所述LBT持续失败消息。
  48. 根据权利要求47所述的装置,其特征在于,所述候选资源池为模式2的候选资源池。
  49. 根据权利要求47所述的装置,其特征在于,对于所述第一终端的单播业务,所述默认授权载波是所述第一终端与第二终端建立连接时通过PC5-RRC消息协商确定的。
  50. 根据权利要求47所述的装置,其特征在于,对于所述第一终端的单播、组播或广播业务,所述默认授权载波是网络设备配置的。
  51. 根据权利要求47所述的装置,其特征在于,在所述第一终端处于单播、组播或广播的状态下,所述默认授权载波是网络设备基于层二目标地址、服务质量QoS或逻辑信道配置的。
  52. 根据权利要求43所述的装置,其特征在于,所述第一LBT持续失败指示承载在所述第一MAC CE上,所述LBT持续失败信息承载在所述第二MAC CE上;所述装置还包括:
    第一接收模块,用于接收所述第二终端为所述第一终端调度的侧行授权资源,所述侧行授权资源是所述第二终端在第一LBT定时器超时且未接收到所述第一终端发送的侧行链路传输数据的情况下为所述第一终端调度的,所述第一LBT定时器是在所述第二终端接收到所述第一MAC CE时启动的;
    所述发送子模块,用于向所述第二终端发送所述第一MAC CE,所述第一MAC CE包括所述第一LBT持续失败指示;
    所述发送子模块,用于在所述侧行传输资源上向所述第二终端发送所述第二MAC CE,所述第二MAC CE包括所述LBT持续失败信息。
  53. 根据权利要求36所述的装置,其特征在于,所述目标操作包括所述LBT恢复,所述免授权调度资源为候选资源集中的全部载波上的资源;所述执行模块包括:发送子模块;
    所述发送子模块,用于在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,向网络设备发送第二LBT持续失败指示。
  54. 根据权利要求53所述的装置,其特征在于,所述第二LBT持续失败指示承载在无线资源控制RRC信令上。
  55. 根据权利要求53所述的装置,其特征在于,所述第二LBT持续失败指示包括媒体介入控制MAC层针对层二目标地址或逻辑信道或混合自动重传进程HARQ进程所确定的所述候选资源集。
  56. 根据权利要求53所述的装置,其特征在于,所述装置还包括:
    第一接收模块,用于接收所述网络设备为所述侧行链路传输配置的传输资源。
  57. 根据权利要求53所述的装置,其特征在于,所述装置还包括:
    MAC模块,用于在所述候选资源集的全部BWP上都触发所述LBT持续失败的情况下,所述第一终端的MAC层向RRC层传输第三LBT持续失败指示;
    所述发送子模块,用于在所述RRC层接收到所述MAC层发送的所述第三LBT持续失败指示的情况下,所述RRC层通过RRC信令向所述网络设备发送所述第二LBT持续失败指示。
  58. 根据权利要33至35任一所述的装置,其特征在于,所述第一终端的候选资源集包括所述免授权调度资源,所述候选资源集包括所述第一终端针对层二目标地址或逻辑信道或HARQ进程确定的资源集合。
  59. 一种侧行通信方法装置,其特征在于,用于实现侧行链路传输的第二终端,所述装置包括:
    第二接收模块,用于接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
    触发模块,用于触发无线链路失败RLF。
  60. 根据权利要求59所述的装置,其特征在于,所述LBT持续失败消息包括第一LBT持续失败指示和/或LBT持续失败信息;
    其中,所述LBT持续失败信息包括LBT失败载波、或LBT失败BWP、LBT失败载波集合、LBT失败BWP集合、目标切换载波、目标切换BWP、目标选择载波、目标选择BWP中的至少一种。
  61. 根据权利要求60所述的装置,其特征在于,所述LBT持续失败消息包括所述目标切换载波或所述目标切换BWP;所述装置还包括:
    定时模块,用于响应所述LBT持续失败消息,启动第二LBT定时器;
    所述触发模块,用于在所述第二LBT定时器超时,且未接收到所述第一终端在目标传输资源上发送的侧行链路传输数据的情况下,触发所述RLF;
    其中,所述目标传输资源包括所述目标切换载波、所述目标切换BWP、默认授权载波中的至少一种。
  62. 根据权利要求61所述的装置,其特征在于,
    所述第二接收模块,用于接收网络设备为所述第二终端配置的所述第二LBT定时器。
  63. 根据权利要求60所述的装置,其特征在于,所述LBT持续失败消息不包括所述目标切换载波或所述目标切换BWP;
    所述触发模块,用于响应所述LBT持续失败消息,触发所述RLF。
  64. 根据权利要求60所述的装置,其特征在于,所述LBT持续失败消息包括所述第一LBT持续失败指示和所述LBT持续失败信息;所述装置还包括:
    所述第二接收模块,用于接收所述第一终端发送的第一MAC CE,所述第一MAC CE承载有所述第一LBT持续失败指示;
    定时模块,用于响应所述第一MAC CE,启动第一LBT定时器,所述第一LBT定时器是网络设备为所述第二终端配置的;
    调度模块,用于在所述第一LBT定时器超时,且未接收到所述第一终端发送的侧行链路传输数据的情况下,向所述第一终端调度侧行授权资源;
    其中,所述侧行授权资源用于发送所述LBT持续失败信息。
  65. 一种终端,其特征在于,所述终端包括:处理器和与所述处理器相连的收发器;其中,
    所述处理器,用于在免授权调度资源上执行先听后说LBT;
    所述处理器,用于在所述免授权调度资源上触发LBT持续失败的情况下,执行目标操作。
  66. 一种终端,其特征在于,所述终端包括:处理器和与所述处理器相连的收发器;其中,
    所述收发器,用于接收第一终端发送的先听后说LBT持续失败消息,所述LBT持续失败消息是所述第一终端在免授权调度资源上触发LBT持续失败后发送的;
    所述处理器,用于触发无线链路失败RLF。
  67. [根据细则91更正 23.08.2021] 
    一种计算机可读存储介质,其特征在于,所述可读存储介质中存储有可执行指令,所述可执行指令由处理器加载并执行以实现如权利要求1至32任一所述的侧行通信方法。
  68. [根据细则91更正 23.08.2021] 
    一种芯片,其特征在于,所述芯片包括可编程逻辑电路或程序,所述芯片用于实现如权利要求1至32中任一所述的侧行通信方法。
PCT/CN2021/110149 2021-08-02 2021-08-02 侧行通信方法、装置、设备及存储介质 Ceased WO2023010257A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2021/110149 WO2023010257A1 (zh) 2021-08-02 2021-08-02 侧行通信方法、装置、设备及存储介质
CN202180100232.2A CN117652199A (zh) 2021-08-02 2021-08-02 侧行通信方法、装置、设备及存储介质
EP21952167.1A EP4355010A4 (en) 2021-08-02 2021-08-02 METHOD AND DEVICE FOR SIDELINK COMMUNICATION AS WELL AS DEVICE AND STORAGE MEDIUM
US18/409,365 US20240147533A1 (en) 2021-08-02 2024-01-10 Sidelink communication method and apparatus, and device and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/110149 WO2023010257A1 (zh) 2021-08-02 2021-08-02 侧行通信方法、装置、设备及存储介质

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/409,365 Continuation US20240147533A1 (en) 2021-08-02 2024-01-10 Sidelink communication method and apparatus, and device and storage medium

Publications (1)

Publication Number Publication Date
WO2023010257A1 true WO2023010257A1 (zh) 2023-02-09

Family

ID=85154896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/110149 Ceased WO2023010257A1 (zh) 2021-08-02 2021-08-02 侧行通信方法、装置、设备及存储介质

Country Status (4)

Country Link
US (1) US20240147533A1 (zh)
EP (1) EP4355010A4 (zh)
CN (1) CN117652199A (zh)
WO (1) WO2023010257A1 (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116636166A (zh) * 2023-03-24 2023-08-22 北京小米移动软件有限公司 一种连续先听后说lbt失败的处理方法及其装置
WO2024160061A1 (zh) * 2023-02-01 2024-08-08 华为技术有限公司 一种通信方法及装置
WO2024229769A1 (zh) * 2023-05-10 2024-11-14 北京小米移动软件有限公司 一种侧行链路连续先听后说失败的处理方法及其装置
WO2025001604A1 (zh) * 2023-06-30 2025-01-02 大唐移动通信设备有限公司 一致性先听后说失败处理方法、装置及终端
WO2025000211A1 (zh) * 2023-06-26 2025-01-02 北京小米移动软件有限公司 资源选择方法、终端
WO2025059976A1 (zh) * 2023-09-21 2025-03-27 华为技术有限公司 一种免动态授权传输配置的配置方法及相关装置
EP4537616A1 (en) 2023-02-16 2025-04-16 ZTE Corporation Method, device and computer program product for wireless communication

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12426084B2 (en) * 2021-10-04 2025-09-23 Qualcomm Incorporated Channel occupancy time contention grant for sidelink communications
CN118369981A (zh) * 2021-12-23 2024-07-19 中兴通讯股份有限公司 非授权载波上的侧行链路通信
EP4490968A1 (en) * 2022-03-31 2025-01-15 Ofinno, LLC Sidelink listen-before-talk failure on shared spectrum
WO2024072032A1 (en) * 2022-09-29 2024-04-04 Samsung Electronics Co., Ltd. Method and apparatus for handling lbt for sidelink communication
WO2024207920A1 (zh) * 2023-04-07 2024-10-10 大唐移动通信设备有限公司 一致性先听后说失败处理方法、装置及终端

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107371168A (zh) * 2016-05-12 2017-11-21 电信科学技术研究院 一种非授权频谱中的测量方法和设备
CN107431591A (zh) * 2015-01-28 2017-12-01 交互数字专利控股公司 用于无授权频带中的lte的上行链路操作
WO2020221850A1 (en) * 2019-05-02 2020-11-05 Telefonaktiebolaget Lm Ericsson (Publ) Handling detection of a problem in unlicensed frequency spectrum
WO2021056296A1 (zh) * 2019-09-25 2021-04-01 Oppo广东移动通信有限公司 一种信息处理方法、终端设备
US20210144761A1 (en) * 2019-11-07 2021-05-13 FG Innovation Company Limited Method of listen before talk recovery procedure and related device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3846573B1 (en) * 2018-08-30 2024-08-14 KT Corporation Method and device for processing channel access failure in unlicensed band
US20220022252A1 (en) * 2019-03-27 2022-01-20 Apple Inc. Uplink listen before talk failure handling
US12336008B2 (en) * 2019-05-01 2025-06-17 Apple Inc. Apparatus and method of handling uplink listen before talk (LBT) failures for new radio (NR) systems operating on unlicensed spectrum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107431591A (zh) * 2015-01-28 2017-12-01 交互数字专利控股公司 用于无授权频带中的lte的上行链路操作
CN107371168A (zh) * 2016-05-12 2017-11-21 电信科学技术研究院 一种非授权频谱中的测量方法和设备
WO2020221850A1 (en) * 2019-05-02 2020-11-05 Telefonaktiebolaget Lm Ericsson (Publ) Handling detection of a problem in unlicensed frequency spectrum
WO2021056296A1 (zh) * 2019-09-25 2021-04-01 Oppo广东移动通信有限公司 一种信息处理方法、终端设备
US20210144761A1 (en) * 2019-11-07 2021-05-13 FG Innovation Company Limited Method of listen before talk recovery procedure and related device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NOKIA, NOKIA SHANGHAI BELL, ASUSTEK, LG, HUAWEI, ZTE: "Corrections for NR-U", 3GPP DRAFT; R2-2008372, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20200817 - 20200828, 1 September 2020 (2020-09-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051926325 *
See also references of EP4355010A4 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024160061A1 (zh) * 2023-02-01 2024-08-08 华为技术有限公司 一种通信方法及装置
EP4537616A1 (en) 2023-02-16 2025-04-16 ZTE Corporation Method, device and computer program product for wireless communication
EP4537616A4 (en) * 2023-02-16 2025-09-17 Zte Corp METHOD, DEVICE AND COMPUTER PROGRAM PRODUCT FOR WIRELESS COMMUNICATION
CN116636166A (zh) * 2023-03-24 2023-08-22 北京小米移动软件有限公司 一种连续先听后说lbt失败的处理方法及其装置
WO2024197487A1 (zh) * 2023-03-24 2024-10-03 北京小米移动软件有限公司 一种连续先听后说lbt失败的处理方法及其装置
WO2024229769A1 (zh) * 2023-05-10 2024-11-14 北京小米移动软件有限公司 一种侧行链路连续先听后说失败的处理方法及其装置
CN119302025A (zh) * 2023-05-10 2025-01-10 北京小米移动软件有限公司 一种侧行链路连续先听后说失败的处理方法及其装置
WO2025000211A1 (zh) * 2023-06-26 2025-01-02 北京小米移动软件有限公司 资源选择方法、终端
WO2025001604A1 (zh) * 2023-06-30 2025-01-02 大唐移动通信设备有限公司 一致性先听后说失败处理方法、装置及终端
WO2025059976A1 (zh) * 2023-09-21 2025-03-27 华为技术有限公司 一种免动态授权传输配置的配置方法及相关装置

Also Published As

Publication number Publication date
EP4355010A4 (en) 2024-07-31
US20240147533A1 (en) 2024-05-02
CN117652199A (zh) 2024-03-05
EP4355010A1 (en) 2024-04-17

Similar Documents

Publication Publication Date Title
WO2023010257A1 (zh) 侧行通信方法、装置、设备及存储介质
KR102667780B1 (ko) 사이드링크 통신방법, 장치 및 저장매체
US20230007727A1 (en) Wireless communication method and communication apparatus
CN114679919B (zh) 配置方法和装置
CN113301524B (zh) V2x消息发送方法、装置及系统
WO2023030088A1 (zh) 旁链路通信方法及设备
CN108886748B (zh) 用于减少信令开销和减少终端电池的方法和设备
WO2018019001A1 (zh) 一种终端状态转换方法及装置
JP7498850B2 (ja) D2d通信用の複数のdrx設定
US20260107342A1 (en) Method and apparatus for sidelink communication during fast mcg link recovery procedure
CN116671178A (zh) 在sl中继情况下的失败监视和恢复机制
WO2022236484A1 (zh) Sdt失败上报的方法、终端设备和网络设备
KR20220132465A (ko) Drx 동작을 지원하는 통신 시스템에서 하나 이상의 링크들에 대한 자원 센싱 및 선택을 위한 방법 및 장치
WO2023205951A1 (zh) 载波确定方法、装置、设备和介质
WO2023065303A1 (zh) 一种控制方法、设备及存储介质
WO2017107624A1 (zh) 一种资源配置和数据传输的方法及设备
JP2024516124A (ja) サイドリンク通信のための方法および装置
WO2023122976A1 (zh) 通信方法、装置、终端、芯片、存储介质、产品及程序
WO2023000233A1 (zh) 资源重选方法、装置、设备及存储介质
CN114258717A (zh) 在直通链路通信中使用资源的系统和方法
WO2023116410A1 (zh) 一种通信方法及设备
WO2024020862A1 (zh) 侧行链路的切换方法、装置、设备、系统及介质
WO2014067300A1 (zh) 一种集群信息的传送方法及相应的集群终端和接入节点
WO2024065137A1 (zh) 配置信息获取方法, 配置信息转发方法以及终端设备
WO2023046758A1 (en) Si request handling by relay ue and remote ue

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21952167

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202180100232.2

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2021952167

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2021952167

Country of ref document: EP

Effective date: 20240111

NENP Non-entry into the national phase

Ref country code: DE