WO2024093921A1 - 持续lbt失败的处理方法、装置、终端及存储介质 - Google Patents

持续lbt失败的处理方法、装置、终端及存储介质 Download PDF

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Publication number
WO2024093921A1
WO2024093921A1 PCT/CN2023/127788 CN2023127788W WO2024093921A1 WO 2024093921 A1 WO2024093921 A1 WO 2024093921A1 CN 2023127788 W CN2023127788 W CN 2023127788W WO 2024093921 A1 WO2024093921 A1 WO 2024093921A1
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Prior art keywords
sidelink
terminal
lbt failure
resource
continuous
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PCT/CN2023/127788
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English (en)
French (fr)
Inventor
黎建辉
郑倩
梁敬
肖潇
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维沃移动通信有限公司
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Publication of WO2024093921A1 publication Critical patent/WO2024093921A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a method, device, terminal and storage medium for processing continuous LBT failure.
  • the User Equipment In the New Radio-Unlicensed Spectrum (NR-U), the User Equipment (UE) needs to listen before talk (LBT) when accessing a channel on the unlicensed band. When the traffic on the unlicensed band is heavy, the UE may encounter LBT failure. According to the LBT recovery parameter configuration of the network configuration, the UE needs to determine when to trigger a consistent LBT failure. After triggering a consistent LBT failure, the UE also needs to determine when to cancel the consistent LBT failure. In the sidelink-unlicensed (SL-U) band, the SL UE also needs to determine under what conditions to cancel the sidelink consistent LBT failure.
  • LBT Long Term Evolution-Unlicensed
  • the embodiments of the present application provide a method, device, terminal and storage medium for processing continuous LBT failure, which can solve the problem of SL UE determining under what conditions to cancel the continuous LBT failure of the side link.
  • a method for processing a continuous LBT failure is provided, which is applied to a first terminal, and the method includes:
  • the first terminal triggers a sidelink continuous listen-before-talk (LBT) failure, and cancels the sidelink continuous LBT failure when the first condition is met;
  • LBT listen-before-talk
  • the first condition is used to determine whether the condition for canceling the continuous LBT failure of the side link is met.
  • a device for processing continuous LBT failure comprising:
  • a processing unit configured to, when a first terminal triggers a sidelink continuous listen-before-talk LBT failure, cancel the sidelink continuous LBT failure when a first condition is met;
  • a terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method for processing continuous LBT failure as described in the first aspect are implemented.
  • a terminal including a processor and a communication interface, wherein the processor is used to trigger a sidelink continuous listen-before-talk LBT failure, and cancel the sidelink continuous LBT failure when a first condition is met;
  • the first condition is used to determine whether the condition for canceling the continuous LBT failure of the side link is met.
  • a communication system comprising: a first terminal, wherein the first terminal can be used to execute the steps of the method for processing continuous LBT failure as described in the first aspect.
  • a readable storage medium on which a program or instruction is stored.
  • the program or instruction is executed by a processor, the steps of the method for processing continuous LBT failure as described in the first aspect are implemented.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method for processing continuous LBT failure as described in the first aspect.
  • a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method for processing persistent LBT failure as described in the first aspect.
  • the terminal triggers a sidelink continuous listen-before-speak LBT failure.
  • a first condition is met, the sidelink continuous LBT failure is canceled.
  • the conditions for the terminal to cancel the sidelink continuous LBT failure in SL-U are provided, so that the terminal can cancel the sidelink continuous LBT failure in time when the sidelink continuous LBT failure cancellation conditions are met, thereby improving the resource utilization of the terminal.
  • FIG1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;
  • FIG2 is a flow chart of a method for processing continuous LBT failure provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of the structure of a device for processing continuous LBT failure provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG5 is a schematic diagram of the hardware structure of a first terminal implementing an embodiment of the present application.
  • first, second, etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by “first” and “second” are generally of the same type, and the number of objects is not limited.
  • the first object can be one or more.
  • “and/or” in the specification and claims represents at least one of the connected objects, and the character “/" generally represents that the objects associated with each other are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR new radio
  • FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (personal computer, PC), a teller machine or a self-service machine and other terminal side devices, and
  • the network side device 12 may include an access network device or a core network device, wherein the access network device 12 may also be referred to as a wireless access network device, a wireless access network (Radio Access Network, RAN), a wireless access network function or a wireless access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home B node, a home evolved B node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.
  • the core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in
  • the UE needs to perform LBT when accessing a channel on an unlicensed band.
  • the UE may encounter LBT failure.
  • the UE needs to determine when to trigger a consistent listen-before-talk failure (consistent LBT failure).
  • the UE After triggering a consistent LBT failure, the UE also needs to determine when to cancel the consistent LBT failure.
  • the UE triggers a consistent LBT failure the consistent LBT failure will be canceled after reporting the consistent LBT failure to the network or completing conditions such as random access. This means that the UE does not need to take any other actions for the canceled consistent LBT failure.
  • the UE cancels the continuous LBT failure:
  • the MAC entity shall: If there is any ongoing LBT that has been triggered Failure, canceling the LBT failure;
  • the MAC entity shall:
  • the serving cell does not have any ongoing random access procedure, or if the ongoing random access procedure of the serving cell is successfully completed when the PDCCH encrypted with the Cell Radio Network Temporary Identity (C-RNTI) is received, if the serving cell has any triggered persistent LBT failure, the persistent LBT failure is canceled.
  • C-RNTI Cell Radio Network Temporary Identity
  • the eNB/gNB/UE Before preempting a channel, the eNB/gNB/UE must determine a CAPC value and refer to Table 1 to determine the window parameters for channel access and LBT.
  • the maximum channel occupancy time (COT) is also relatively shorter, which reflects a certain degree of fairness in the preemption of channels by different devices.
  • DRB Data Radio Bearer
  • the base station can schedule multiple consecutive time slots (multi-slot resources) for UE uplink transmission through downlink control information (Downlink Control Information, DCI) format 0_1.
  • DCI Downlink Control Information
  • the UE can determine the CAPC value used when transmitting using multi-slot resources through DCI format 0_1.
  • SL UE includes two resource allocation modes, mode 1 and mode 2.
  • Mode 1 is the base station scheduling resources
  • mode 2 is the UE deciding what resources to use for transmission.
  • Resource information may come from the base station's broadcast message or pre-configured information. If the UE works within the base station range and has a Radio Resource Control (RRC) connection with the base station, it can be mode 1 and/or mode 2; if the UE works within the base station range but has no RRC connection with the base station, it can only work in mode 2. If the UE is outside the base station range, it can only work in mode 2 and perform SL transmission according to the pre-configured information.
  • RRC Radio Resource Control
  • the specific working method is as follows: 1) After the resource selection is triggered, the TX UE first determines the resource selection window. The lower boundary of the resource selection window is T1 time after the resource selection is triggered, and the upper boundary of the resource selection is T2 time after the trigger, where T2 is the value selected by the UE implementation within the packet delay budget (PDB) transmitted in its transmission block (TB), and T2 is no earlier than T1. 2) Before resource selection, the UE needs to determine the candidate resource set (candidate resource set) for resource selection, and compare the reference signal receiving power (RSRP) measured on the resources in the resource selection window with the corresponding RSRP threshold. If the RSRP is lower than the RSRP threshold, then the resource is selected. The source can be included in the candidate resource set. 3) After the resource set is determined, the UE randomly selects a transmission resource from the candidate resource set. In addition, the UE can reserve transmission resources for the next transmission during this transmission.
  • PDB packet delay budget
  • NR SL supports chained resource reservation, that is, a sidelink control information (SCI) can indicate that including the current transmission resources, up to two additional resources can be reserved, and up to three more reserved resources can be indicated in the next resource cycle. Within the selection window, dynamic reservation can be used to continuously reserve resources.
  • SCI sidelink control information
  • SL UE In SL-U, SL UE also needs to determine under what conditions to cancel the continuous LBT failure of the sidelink. However, the conditions for UE to cancel the continuous LBT failure in NR-U cannot be directly multiplexed into SL-U for the following reasons:
  • the resource allocation modes of SL UE are divided into mode 1 and mode 2;
  • SL UE in RRC connected state may encounter mode switching between mode 1 and mode 2;
  • the resource granularity of SL is different from that of NR.
  • the resource selection related issues of SL are usually discussed with resource pool as the resource granularity;
  • SL UE not only has a Uu air interface with the base station, but also has a separate PC5 air interface with other UEs;
  • the core idea of this application is to comprehensively explain the conditions for SL UE to cancel the continuous LBT failure of the sidelink from the perspectives of continuous LBT failure recovery, SL-U resource configuration, and SL mode conversion.
  • FIG2 is a flow chart of a method for processing continuous LBT failure provided in an embodiment of the present application. As shown in FIG2 , the method for processing continuous LBT failure includes the following steps:
  • Step 200 The first terminal triggers a sidelink continuous listen-before-talk LBT failure, and cancels the sidelink continuous LBT failure when the first condition is met;
  • the first condition is used to determine whether the condition for canceling the continuous LBT failure of the side link is met.
  • An embodiment of the present application provides a condition for the UE to cancel the sidelink consistent LBT failure (sidelink consistent LBT failure) in SL-U.
  • the terminal triggers the sidelink consistent LBT failure, if the first condition is met, the sidelink consistent LBT failure is canceled.
  • triggering LBT failure is understood as triggering the event of generating LBT failure
  • canceling LBT failure can be understood as canceling the LBT failure event.
  • resource granularity such as channel, resource block set (Resource Block set, RB set), resource pool (resource pool), bandwidth part (Bandwidth Part, BWP), and carrier.
  • the terminal triggers a sidelink continuous listen-before-speak LBT failure.
  • a first condition is met, the sidelink continuous LBT failure is canceled.
  • the conditions for the terminal to cancel the sidelink continuous LBT failure in SL-U are provided, so that the terminal can cancel the sidelink continuous LBT failure in time when the sidelink continuous LBT failure cancellation conditions are met, thereby improving the resource utilization of the terminal.
  • the first condition includes at least one of the following:
  • the first terminal sends first indication information to the network side device or the second terminal, where the first indication information is used to indicate that the side link continuous LBT failure triggered by the first terminal has failed, or is used to indicate that the side link continuous LBT failure on the resource of the first resource granularity has been triggered;
  • the first terminal when the first terminal indicates the triggered sidelink continuous LBT failure (sidelink continuous LBT failure) to the network side device or the second terminal, the first terminal can cancel the sidelink continuous LBT failure.
  • the terminal when the terminal indicates to the network side device or other SL UE that a sidelink continuous LBT failure has been triggered on the resources of the first resource granularity, the first terminal cancels the sidelink continuous LBT failure.
  • the first indication information is carried via DCI or MAC CE or RRC signaling.
  • the failure to cancel the continuous LBT of the side link includes at least one of the following:
  • the second resource granularity may be the same as the first resource granularity, or may be different from the first resource granularity.
  • the triggered sidelink continuous LBT failure on the resources indicated in the sidelink LBT failure MAC CE is canceled, or all triggered sidelink continuous LBT failures are canceled.
  • the triggered sidelink continuous LBT failure on the resources indicated by the RRC signaling is canceled; or, all triggered sidelink continuous LBT failures are canceled.
  • the UE sends a first indication message to the base station, and the first indication message indicates a triggered continuous LBT failure of the sidelink on the resources of the first resource granularity, then the triggered continuous LBT failure of the sidelink on the resources of the second resource granularity is canceled.
  • the terminal triggers a side link continuous listen-before-talk LBT failure.
  • the terminal sends a first indication message to a network side device or other terminal, the side link continuous LBT failure is canceled, which can improve the resource utilization of the terminal.
  • the first terminal has performed sidelink transmission, or the first terminal has completed sidelink continuous LBT failure recovery;
  • the first terminal does not need to take other actions for the triggered continuous LBT failure.
  • the first terminal has performed sidelink transmission, including at least one of the following:
  • the first terminal has performed sidelink transmission on the resources that triggered the sidelink continuous LBT failure
  • the first terminal has performed sidelink transmission on resources that triggered the sidelink continuous LBT failure, including:
  • the first terminal triggers a sidelink continuous LBT failure on a first resource with a first resource granularity, and/or triggers a sidelink continuous LBT failure on a second resource with a second resource granularity in the first resource, and does not cancel the sidelink continuous LBT failure on the first resource and/or the second resource, and sidelink transmission has been performed on the first resource and/or the second resource.
  • a sidelink continuous LBT failure is triggered on the first resource of the first resource granularity (channel/RB set/resource pool/BWP/carrier) of the UE, and/or a sidelink continuous LBT failure occurs on the second resource of the second resource granularity (channel/RB set/resource pool/BWP/carrier) in the first resource, and the sidelink continuous LBT failure on the first resource and/or the second resource is not canceled
  • the UE has completed sidelink transmission on the first resource and/or the second resource (for example, a sidelink transmission is sent on the second resource of the second resource granularity in the first resource or the third resource of the second resource granularity, that is, the third resource is a resource with the same granularity as the second resource in the first resource).
  • the first terminal triggers the sidelink continuous LBT failure in the first resource granularity resource On resources with the second resource granularity, sidelink transmission has been performed;
  • the first terminal has performed sidelink transmission on resources of a third resource granularity including resources of a first resource granularity that triggered the sidelink continuous LBT failure;
  • the first resource granularity is greater than or equal to the second resource granularity and less than or equal to the third resource granularity.
  • the first terminal has performed a sidelink transmission on an exceptional pool, and the sidelink transmission indicates a persistent LBT failure of the sidelink.
  • the sidelink transmission includes at least one of the following:
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the first terminal completes the sidelink continuous LBT failure recovery, including:
  • the first terminal completes sidelink continuous LBT failure recovery on the fourth resource of the first resource granularity.
  • the completing the sidelink continuous LBT failure recovery includes at least one of the following:
  • the resource switching or resource reselection of the first resource granularity or the second resource granularity has been completed.
  • the first terminal has completed channel/RB set/resource pool/BWP/carrier switching or reselection, it is considered that the first terminal has completed the sidelink continuous LBT failure recovery.
  • the canceling the sidelink continuous LBT failure includes:
  • the terminal triggers a sidelink continuous listen-before-talk LBT failure. If the terminal has executed sidelink transmission, or completed sidelink continuous LBT failure recovery, the sidelink continuous LBT failure is canceled, which can improve the resource utilization of the terminal.
  • the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal;
  • the terminal receives an RRC reconfiguration message from the network-side device or the second terminal, canceling the sidelink continuous LBT fails.
  • the canceling of the sidelink continuous LBT failure may also be understood as canceling the sidelink continuous LBT failure on the resources of the resource granularity corresponding to the information in the RRC reconfiguration message.
  • the RRC reconfiguration message includes at least one of the following:
  • Sidelink transmission resources such as carrier resource configuration, BWP configuration, resource pool configuration
  • SCS Sub-Carrier Spacing
  • a first parameter associated with the sidelink persistent LBT failure is a first parameter associated with the sidelink persistent LBT failure.
  • the first parameter is sl-lbt-FailureRecoveryConfig.
  • the RRC reconfiguration message includes sl-lbt-FailureRecoveryConfig, indicating that sl-lbt-FailureRecoveryConfig is reconfigured.
  • the UE fails to cancel the sidelink continuous LBT:
  • a first parameter associated with the sidelink persistent LBT failure is reconfigured.
  • the first parameter includes at least one of the following:
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the reconfigured resources such as RB set/resource pool/BWP/carrier
  • cancel the sidelink continuous LBT failure on the reconfigured resources or, cancel all triggered sidelink continuous LBT failures.
  • the sidelink continuous LBT failure on the resources of the resource granularity associated with the sl-lbt-FailureRecoveryConfig is canceled; or, all triggered sidelink continuous LBT failures are canceled.
  • the terminal triggers a sidelink continuous listen-before-talk LBT failure. If the terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal, the sidelink continuous LBT failure is canceled, thereby improving the resource utilization of the terminal.
  • the first information of the first terminal is reconfigured by an upper layer, or the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal, and the RRC reconfiguration message includes the first information;
  • the upper layer is the upper layer of the layer that triggers the LBT failure.
  • the sidelink continuous LBT failure is canceled.
  • the cancellation of the sidelink continuous LBT failure can also be understood as canceling the sidelink continuous LBT failure on the resource of the resource granularity corresponding to the first information.
  • the first information includes at least one of the following:
  • a first parameter associated with the sidelink persistent LBT failure is a first parameter associated with the sidelink persistent LBT failure.
  • the UE fails to cancel the sidelink continuous LBT:
  • a first parameter related to the sidelink persistent LBT failure is reconfigured by an upper layer of the UE.
  • the first parameter includes at least one of the following:
  • the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal, and the RRC reconfiguration message includes the first information
  • the side link continuous LBT failure is canceled.
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the terminal triggers the sidelink to continue to listen first and then talk LBT failure. If the information is reconfigured by the upper layer, or an RRC reconfiguration message is received from a network side device or other terminal, and the RRC reconfiguration message includes the first information, the side link continuous LBT failure is canceled, which can improve the resource utilization of the terminal.
  • the first protocol layer includes at least one of the following: MAC/RLC/PDCP/SDAP.
  • the first protocol layer may be a protocol layer on a PC5 air interface between UEs, or may be a protocol layer on a Uu air interface between a UE and a base station.
  • the sidelink continuous LBT failure is canceled.
  • the canceling of the side link continuous LBT failure includes:
  • Canceling the sidelink continuous LBT failure that has been triggered on the first protocol layer includes: canceling all sidelink continuous LBT failures that have been triggered on the first protocol layer.
  • the terminal triggers a side link continuous listen-before-talk LBT failure. If the first protocol layer of the terminal's PC5 link or Uu link is reset, the side link continuous LBT failure is canceled, which can improve the resource utilization of the terminal.
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the first terminal fails to reestablish RRC;
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the first terminal RRC reestablishment fails, including at least one of the following:
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or RRC reestablishment failure of the first terminal occurs on a PC5 link;
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or RRC reconstruction failure of the first terminal occurs on a Uu link.
  • the canceling the side link continuous LBT failure includes:
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the first terminal RRC reestablishment failure occurs on the PC5 link, cancel all side link continuous LBT failures on the PC5 link;
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the RRC reconstruction failure of the first terminal occurs on the Uu link, all side link continuous LBT failures on the Uu link are canceled.
  • the side link continuous LBT failure on the resources that triggered the RLF is canceled, or the side link continuous LBT failure on all resources on the PC5 link is canceled, or all side link continuous LBT failures on the Uu link are canceled.
  • the UE receives an RRC release message, it cancels the sidelink continuous LBT failure on the resource that receives the RRC release message, or cancels the sidelink continuous LBT failure on all resources on the PC5 link, or cancels all sidelink continuous LBT failures on the Uu link;
  • the terminal triggers the side link to continue to listen first and then speak LBT failure. If the terminal triggers RLF, or, receiving an RRC release message, or RRC reestablishment fails, canceling the sidelink continuous LBT failure can improve the resource utilization of the terminal.
  • the UE fails to cancel the sidelink continuous LBT:
  • the first terminal may be a UE in a connected state (CONNECTED), or a UE that has changed from a CONNECTED state to an idle state (IDLE) or an inactive state (INACTIVE), or a UE that has changed from an IDLE/INACTIVE state to a CONNECTED state.
  • CONNECTED connected state
  • IDLE idle state
  • INACTIVE inactive state
  • the terminal triggers the sidelink continuous listen-before-talk LBT failure. If the resource allocation mode of the terminal is switched, the sidelink continuous LBT failure is canceled, which can improve the resource utilization of the terminal.
  • the first terminal does not select the first carrier when performing carrier selection
  • the UE when the UE performs carrier selection, if the UE does not select a certain carrier, if any sidelink continuous LBT failure is triggered on the carrier, the UE cancels the triggered sidelink continuous LBT failure on the carrier.
  • the first terminal does not select the first carrier when performing carrier selection, including at least one of the following:
  • the first terminal does not select the first carrier
  • the first terminal detects that the CBR of the first carrier exceeds a first threshold
  • the first terminal deactivates the first carrier during carrier aggregation.
  • the cancelling the continuous LBT failure of the sidelink includes:
  • the sidelink continuous LBT failure that has been triggered on the first carrier is canceled.
  • the terminal triggers a sidelink continuous listen-before-talk LBT failure. If the terminal does not select the first carrier when performing carrier selection, the sidelink continuous LBT failure on the first carrier is canceled, which can improve the resource utilization of the terminal.
  • the first terminal has completed cell reselection.
  • the UE cancels the sidelink continuous LBT failure.
  • the first terminal has completed cell reselection, including at least one of the following:
  • the first terminal has completed cell reselection, and the sidelink resources configured by the reselected cell are partially different from or completely different from the sidelink resources configured by the serving cell before the reselection;
  • the first terminal has completed cell reselection, and the sidelink resources configured for the reselected cell do not include the resources of the first terminal that triggered the sidelink continuous LBT failure.
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the UE fails to cancel the sidelink continuous LBT:
  • the sidelink resources configured in the reselected cell are partially different from or completely different from the sidelink resources configured in the serving cell before the reselection;
  • the sidelink resources configured for the reselected cell do not include the resources where the UE triggered a consistent LBT failure.
  • the UE canceling the sidelink persistent LBT failure includes: if there is any triggered sidelink persistent LBT failure, canceling the sidelink persistent LBT failure; or, canceling the sidelink persistent LBT failure on the resources that triggered the consistent LBT failure; or, canceling all sidelink persistent LBT failures.
  • the terminal triggers the sidelink continuous listen-before-talk LBT failure. If the terminal has completed cell reselection, the sidelink continuous LBT failure is canceled, which can improve the resource utilization of the terminal.
  • the method further comprises:
  • the first terminal does not cancel the sidelink continuous LBT failure
  • the UE does not cancel the sidelink persistent LBT failure.
  • the second condition includes at least one of the following:
  • the UE fails to maintain the sidelink continuous LBT on the resources used.
  • the sidelink transmission performed by the first terminal is S-SSB or PSFCH or physical sidelink broadcast channel PSBCH;
  • the UE after the UE triggers a consistent LBT failure, if the UE successfully performs sidelink transmission and the transmission is S-SSB, PSFCH or PSBCH, the UE does not cancel the consistent LBT failure.
  • the S-SSB is an S-SSB transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink
  • the PSFCH is a PSFCH transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink
  • the PSBCH is a PSBCH transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink.
  • the S-SSB or PSFCH or PSBCH is an S-SSB or PSFCH or PSBCH transmitted within or outside a resource of a certain resource granularity that triggers a consistent LBT failure.
  • the first terminal After the sidelink continuous LBT failure is triggered, the first terminal has completed cell reselection, and the sidelink resources configured in the reselected cell are exactly the same as the sidelink resources configured in the serving cell before the reselection;
  • the first terminal After the continuous LBT failure of the sidelink is triggered, the first terminal has completed cell reselection, and the sidelink resources configured in the reselected cell include the resources of the first terminal that triggered the continuous LBT failure of the sidelink.
  • the embodiment of the present application also provides several situations in which the continuous LBT failure of the side link is not cancelled, which can avoid the cancellation of the continuous LBT failure of the side link and improve the terminal communication quality.
  • the method before the first terminal triggers the sidelink continuous listen-before-talk LBT failure, the method further includes:
  • the first terminal determines that the channel access priority CAPC value used for resource transmission of the multiple consecutive time slots is the CAPC value corresponding to the lowest priority among the CAPC values of multiple transmission blocks TB.
  • the UE For an IDLE/INACTIVE UE, when the UE performs sidelink transmission, if the UE uses multi-slot resource transmission, it cannot obtain the CAPC value used for multi-slot resource transmission from the base station. At this time, the UE needs to determine a CAPC value for it to further determine which physical layer parameters to use for channel access.
  • One solution is: when the UE uses multi-slot resources for sidelink transmission, if multiple TBs are transmitted on the multi-slot resources, the UE determines that the CAPC value used for the multi-slot transmission is the CAPC value with the lowest priority among the CAPC values of all TBs, that is, the value with the largest CAPC value.
  • the embodiment of the present application provides a method for a terminal to determine a CAPC value when a UE uses multi-slot resources for sidelink transmission, thereby enabling the terminal to further determine physical layer parameters for channel access and improve the efficiency of terminal channel access.
  • the first terminal satisfies at least one of the following:
  • the first terminal is a terminal using mode 2 resource allocation mode
  • the first terminal is in an idle state or an inactive state
  • the first terminal is an out-of-coverage (OOC) terminal
  • the multiple transmission blocks TB include initial transmission TBs and/or retransmission TBs.
  • the multiple TBs are all initial transmission TBs, or there are both initial transmission TBs and retransmission TBs, or all are retransmission TBs. Transmit TB.
  • the method for processing continuous LBT failure provided in the embodiment of the present application can be executed by a processing device for continuous LBT failure.
  • the processing method for processing continuous LBT failure performed by a processing device for continuous LBT failure is taken as an example to illustrate the processing device for continuous LBT failure provided in the embodiment of the present application.
  • FIG3 is a schematic diagram of the structure of a device for processing continuous LBT failure provided in an embodiment of the present application.
  • the device for processing continuous LBT failure is applied to a first terminal.
  • the device for processing continuous LBT failure 300 includes:
  • the processing unit 310 is configured to trigger a sidelink continuous listen-before-talk LBT failure, and cancel the sidelink continuous LBT failure when a first condition is met;
  • the first condition is used to determine whether the condition for canceling the continuous LBT failure of the side link is met.
  • the first condition includes at least one of the following:
  • the first terminal sends first indication information to the network side device or the second terminal, where the first indication information is used to indicate that the side link continuous LBT failure triggered by the first terminal has failed, or is used to indicate that the side link continuous LBT failure on the resource of the first resource granularity has been triggered;
  • the first terminal has performed sidelink transmission, or the first terminal has completed sidelink continuous LBT failure recovery;
  • the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal;
  • the first information of the first terminal is reconfigured by an upper layer, or the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal, and the RRC reconfiguration message includes the first information;
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the first terminal fails in RRC reestablishment;
  • the resource allocation mode of the first terminal is switched
  • the first terminal does not select the first carrier when performing carrier selection
  • the first terminal has completed cell reselection.
  • the first indication information is carried via DCI or MAC CE or RRC signaling.
  • the cancellation of the sidelink continuous LBT failure includes at least one of the following: canceling the sidelink continuous LBT failure that has been triggered on the resources indicated by the first indication message; canceling all triggered sidelink continuous LBT failures; canceling the sidelink continuous LBT failure of the second resource granularity.
  • the executed sidelink transmission includes at least one of the following: sidelink transmission has been performed on resources that triggered a continuous LBT failure of the sidelink; sidelink transmission has been performed on resources of a second resource granularity in resources of a first resource granularity that triggered a continuous LBT failure of the sidelink; sidelink transmission has been performed on resources of a third resource granularity that includes resources of the first resource granularity that triggered a continuous LBT failure of the sidelink; sidelink transmission has been performed on a special pool, and the sidelink transmission indicates a continuous LBT failure of the sidelink.
  • the performing of the sidelink transmission on the resource that triggers the sidelink continuous LBT failure includes:
  • a sidelink continuous LBT failure is triggered on a first resource with a first resource granularity, and/or a sidelink continuous LBT failure is triggered on a second resource with a second resource granularity in the first resource, and the sidelink continuous LBT failure on the first resource and/or the second resource is not canceled, and sidelink transmission has been performed on the first resource and/or the second resource.
  • the sidelink transmission includes at least one of the following:
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the completing the sidelink continuous LBT failure recovery includes:
  • the completing the sidelink continuous LBT failure recovery includes at least one of the following:
  • the resource switching or resource reselection of the first resource granularity or the second resource granularity has been completed.
  • the cancelling the continuous LBT failure of the sidelink includes:
  • the first information includes at least one of the following:
  • a first parameter associated with the sidelink persistent LBT failure is a first parameter associated with the sidelink persistent LBT failure.
  • the first parameter includes at least one of the following:
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the canceling of the side link continuous LBT failure includes:
  • the canceling the side link continuous LBT failure includes:
  • the not selecting the first carrier when performing carrier selection includes at least one of the following:
  • the first carrier is deactivated during carrier aggregation.
  • the cancelling the continuous LBT failure of the sidelink includes:
  • the sidelink continuous LBT failure that has been triggered on the first carrier is canceled.
  • the completed cell reselection includes at least one of the following:
  • the cell reselection has been completed, and the sidelink resources configured in the reselected cell are partially different from or completely different from the sidelink resources configured in the serving cell before the reselection;
  • the cell reselection has been completed, and the sidelink resources configured for the reselected cell do not include the resources of the first terminal that triggered the sidelink continuous LBT failure.
  • the canceling of the sidelink continuous LBT failure includes at least one of the following:
  • the method further comprises:
  • the second condition includes at least one of the following:
  • the resource allocation mode has been switched, but the resources used after the switch have not changed;
  • the performed sidelink transmission is S-SSB or PSFCH or Physical Sidelink Broadcast Channel PSBCH;
  • the cell reselection is completed, and the sidelink resources configured in the reselected cell are exactly the same as the sidelink resources configured in the serving cell before the reselection;
  • the cell reselection is completed, and the sidelink resources configured in the reselected cell include the resources that triggered the continuous LBT failure of the sidelink.
  • the S-SSB is an S-SSB transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink
  • the PSFCH is a PSFCH transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink
  • the PSBCH is a PSBCH transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink.
  • the device further comprises:
  • An LBT monitoring unit configured to perform LBT operations on resources of a plurality of consecutive time slots
  • the channel access priority CAPC value used for resource transmission of the multiple consecutive time slots is determined to be the CAPC value corresponding to the lowest priority among the CAPC values of the multiple transport blocks TB.
  • the first terminal satisfies at least one of the following:
  • the first terminal is a terminal using mode 2 resource allocation mode
  • the first terminal is in an idle state or an inactive state
  • the first terminal is an out-of-coverage OOC terminal
  • the multiple transmission blocks TB include initial transmission TBs and/or retransmission TBs.
  • the terminal triggers a sidelink continuous listen-before-speak LBT failure.
  • a first condition is met, the sidelink continuous LBT failure is canceled.
  • the conditions for the terminal to cancel the sidelink continuous LBT failure in SL-U are provided, so that the terminal can cancel the sidelink continuous LBT failure in time when the sidelink continuous LBT failure cancellation conditions are met, thereby improving the resource utilization of the terminal.
  • the processing device for continuous LBT failure in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip.
  • the electronic device can be a terminal, or it can be other devices other than a terminal.
  • the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.
  • the processing device for continuous LBT failure provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • an embodiment of the present application also provides a communication device 400, including a processor 401 and a memory 402, and the memory 402 stores programs or instructions that can be executed on the processor 401.
  • the communication device 400 is a terminal
  • the program or instructions are executed by the processor 401 to implement the various steps of the above-mentioned embodiment of the method for processing continuous LBT failure, and can achieve the same technical effect.
  • An embodiment of the present application also provides a first terminal, including a processor and a communication interface, the processor being used to trigger a side link continuous listen-before-talk (LBT) failure, and cancel the side link continuous LBT failure when a first condition is met; wherein the first condition is used to determine whether a condition for canceling the side link continuous LBT failure is met.
  • the first terminal embodiment corresponds to the first terminal side method embodiment, and each implementation process and implementation mode of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect.
  • Figure 5 is a schematic diagram of the hardware structure of a first terminal implementing the embodiment of the present application.
  • the first terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509 and at least some of the components of the processor 510.
  • the first terminal 500 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system.
  • a power supply such as a battery
  • the first terminal structure shown in FIG5 does not constitute a limitation on the first terminal, and the first terminal can include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.
  • the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042, and the graphics processor 5041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 507 includes a touch panel 5071 and at least one of other input devices 5072.
  • the touch panel 5071 is also called a touch screen.
  • the touch panel 5071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
  • the radio frequency unit 501 after receiving downlink data from the network side device, can transmit the data to the processor 510 for processing; in addition, the radio frequency unit 501 can send uplink data to the network side device.
  • the radio frequency unit 501 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • the memory 509 can be used to store software programs or instructions and various data.
  • the memory 509 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the memory 509 may include a volatile memory or a non-volatile memory, or the memory 509 may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM).
  • the memory 509 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
  • the processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 510.
  • the processor 510 is used to trigger the failure of the side link continuous listen-before-talk LBT, and cancel the side link continuous LBT failure when the first condition is met; wherein the first condition is used to determine whether the condition for canceling the side link continuous LBT failure is met.
  • the first condition includes at least one of the following:
  • the first terminal sends first indication information to the network side device or the second terminal, where the first indication information is used to indicate that the first terminal has triggered a continuous LBT failure of the side link, or is used to indicate a triggered continuous LBT failure of the side link on a resource of a first resource granularity;
  • the first terminal has performed sidelink transmission, or the first terminal has completed sidelink continuous LBT failure recovery;
  • the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal;
  • the first information of the first terminal is reconfigured by an upper layer, or the first terminal receives a radio resource control RRC reconfiguration message from a network side device or a second terminal, and the RRC reconfiguration message includes the first information;
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the first terminal fails in RRC reestablishment;
  • the resource allocation mode of the first terminal is switched
  • the first terminal does not select the first carrier when performing carrier selection
  • the first terminal has completed cell reselection.
  • the first indication information is carried via DCI or MAC CE or RRC signaling.
  • the failure to cancel the continuous LBT of the side link includes at least one of the following:
  • the first terminal has performed sidelink transmission, including at least one of the following:
  • the first terminal has performed sidelink transmission on the resource that triggered the sidelink continuous LBT failure
  • the first terminal has performed sidelink transmission on a resource of a second resource granularity in a resource of a first resource granularity that triggered a sidelink continuous LBT failure;
  • the first terminal has performed sidelink transmission on resources of a third resource granularity including resources of a first resource granularity that triggered the sidelink continuous LBT failure;
  • the first terminal has performed a sidelink transmission on a special pool, the sidelink transmission indicating a sidelink persistent LBT failure.
  • the first terminal has performed side link transmission on the resource that triggered the side link continuous LBT failure, including:
  • the first terminal triggers a sidelink continuous LBT failure on a first resource with a first resource granularity, and/or triggers a sidelink continuous LBT failure on a second resource with a second resource granularity in the first resource, and does not cancel the sidelink continuous LBT failure on the first resource and/or the second resource, and sidelink transmission has been performed on the first resource and/or the second resource.
  • the sidelink transmission includes at least one of the following:
  • the canceling of the continuous LBT failure of the sidelink includes at least one of the following:
  • the first terminal completes sidelink continuous LBT failure recovery, including:
  • the first terminal completes sidelink continuous LBT failure recovery on the fourth resource of the first resource granularity.
  • the completing the sidelink continuous LBT failure recovery includes at least one of the following:
  • the resource switching or resource reselection of the first resource granularity or the second resource granularity has been completed.
  • the cancelling the continuous LBT failure of the sidelink includes:
  • the first information includes at least one of the following:
  • a first parameter associated with the sidelink persistent LBT failure is a first parameter associated with the sidelink persistent LBT failure.
  • the first parameter includes at least one of the following:
  • the canceling of the continuous LBT failure of the sidelink includes at least one of the following:
  • the canceling of the side link continuous LBT failure includes:
  • the canceling the side link continuous LBT failure includes:
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the first terminal RRC reestablishment failure occurs on the PC5 link, cancel all side link continuous LBT failures on the PC5 link;
  • the first terminal triggers a radio link failure RLF, or the first terminal receives an RRC release message, or the RRC reconstruction failure of the first terminal occurs on the Uu link, all side link continuous LBT failures on the Uu link are canceled.
  • the first terminal does not select the first carrier when performing carrier selection, including at least one of the following:
  • the first terminal does not select the first carrier
  • the first terminal detects that the CBR of the first carrier exceeds a first threshold
  • the first terminal deactivates the first carrier during carrier aggregation.
  • the cancelling the continuous LBT failure of the sidelink includes:
  • the sidelink continuous LBT failure that has been triggered on the first carrier is canceled.
  • the first terminal has completed cell reselection, including at least one of the following:
  • the first terminal has completed cell reselection, and the sidelink resources configured by the reselected cell are partially different from or completely different from the sidelink resources configured by the serving cell before the reselection;
  • the first terminal has completed cell reselection, and the sidelink resources configured for the reselected cell do not include the resources of the first terminal that triggered the sidelink continuous LBT failure.
  • the canceling of the continuous LBT failure of the sidelink includes at least one of the following:
  • processor 510 is further configured to:
  • the first terminal does not cancel the sidelink continuous LBT failure
  • the second condition includes at least one of the following:
  • the resource allocation mode of the first terminal is switched, but the resources used by the first terminal are not changed after the switching;
  • the sidelink transmission performed by the first terminal is S-SSB or PSFCH or physical sidelink broadcast channel PSBCH;
  • the first terminal After triggering the sidelink continuous LBT failure, the first terminal has completed cell reselection, and the sidelink resources configured in the reselected cell are exactly the same as the sidelink resources configured in the serving cell before the reselection;
  • the first terminal After the continuous LBT failure of the sidelink is triggered, the first terminal has completed cell reselection, and the sidelink resources configured by the reselected cell include the resources of the first terminal that triggered the continuous LBT failure of the sidelink.
  • the S-SSB is an S-SSB transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink
  • the PSFCH is a PSFCH transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink
  • the PSBCH is a PSBCH transmitted within or outside the resources that triggers a continuous LBT failure of the sidelink.
  • the method before the first terminal triggers the side link to continue listening before speaking (LBT) failure, the method further includes:
  • the first terminal determines that the channel access priority CAPC value used for resource transmission of the multiple consecutive time slots is the CAPC value corresponding to the lowest priority among the CAPC values of multiple transmission blocks TB.
  • the first terminal satisfies at least one of the following:
  • the first terminal is a terminal using mode 2 resource allocation mode
  • the first terminal is in an idle state or an inactive state
  • the first terminal is an out-of-coverage OOC terminal
  • the multiple transmission blocks TB include initial transmission TBs and/or retransmission TBs.
  • the terminal triggers a sidelink continuous listen-before-speak LBT failure.
  • a first condition is met, the sidelink continuous LBT failure is canceled.
  • the conditions for the terminal to cancel the sidelink continuous LBT failure in SL-U are provided, so that the terminal can cancel the sidelink continuous LBT failure in time when the sidelink continuous LBT failure cancellation conditions are met, thereby improving the resource utilization of the terminal.
  • An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
  • a program or instruction is stored.
  • each process of the above-mentioned embodiment of the method for processing continuous LBT failure is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • the processor is the processor in the first terminal described in the above embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.
  • An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the method for handling continuous LBT failure, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • the present application embodiment further provides a computer program/program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-mentioned method for processing continuous LBT failure, and can achieve the same technical effect. To avoid repetition, this I won’t go into details here.
  • An embodiment of the present application also provides a communication system, including: a first terminal, a network side device or a second terminal.
  • the first terminal can be used to execute the various processes of the embodiment of the method for processing continuous LBT failure as described above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the technical solution of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a first terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM/RAM, a magnetic disk, or an optical disk
  • a first terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本申请公开了一种持续LBT失败的处理方法、装置、终端及存储介质，属于通信技术领域，本申请实施例的持续LBT失败的处理方法包括：第一终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消旁链路持续LBT失败(200)；其中，第一条件为用于判断是否满足取消旁链路持续LBT失败的条件。

Description

持续LBT失败的处理方法、装置、终端及存储介质
相关申请的交叉引用
本申请主张在2022年11月04日在中国提交申请号为202211380095.5的中国专利的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种持续LBT失败的处理方法、装置、终端及存储介质。
背景技术
在新空口非授权频段(New Radio-Unlicensed Spectrum，NR-U)中，终端(User Equipment，UE)在非授权频段上进行信道接入时需要做先听后说(Listen Before Talk，LBT)。非授权频段上业务量大的时候，UE可能会遇到LBT失败的情况。根据网络配置的LBT恢复参数配置，UE需要判断何时触发持续先听后说失败(consistent LBT failure)。在触发consistent LBT failure后，UE还需要判断何时取消consistent LBT failure。在旁链路非授权频段(sidelink-unlicensed，SL-U)里，SL UE同样需要判断在什么条件下取消旁链路持续LBT失败。
发明内容
本申请实施例提供一种持续LBT失败的处理方法、装置、终端及存储介质，能够解决SL UE判断在什么条件下取消旁链路持续LBT失败的问题。
第一方面，提供了一种持续LBT失败的处理方法，应用于第一终端，该方法包括：
第一终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
第二方面，提供了一种持续LBT失败的处理装置，包括：
处理单元，用于第一终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
第三方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的持续LBT失败的处理方法的步骤。
第四方面，提供了一种终端，包括处理器及通信接口，其中，所述处理器用于触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
第五方面，提供了一种通信系统，包括：第一终端，所述第一终端可用于执行如第一方面所述的持续LBT失败的处理方法的步骤。
第六方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的持续LBT失败的处理方法的步骤。
第七方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的持续LBT失败的处理方法。
第八方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的持续LBT失败的处理方法的步骤。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败，提供了SL-U中终端取消旁链路持续LBT失败的条件，可以使得终端在满足旁链路持续LBT失败取消条件时，能够及时取消旁链路持续LBT失败，提高终端的资源利用率。
附图说明
图1是本申请实施例可应用的一种无线通信系统的框图；
图2为本申请实施例提供的持续LBT失败的处理方法的流程示意图；
图3为本申请实施例提供的持续LBT失败的处理装置的结构示意图；
图4为本申请实施例提供的通信设备的结构示意图；
图5为实现本申请实施例的一种第一终端的硬件结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能 脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项：核心网节点、核心网功能、移动管理实体(Mobility Management Entity，MME)、接入移动管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)、用户平面功能(User Plane Function，UPF)、策略控制功能(Policy Control Function，PCF)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function，EASDF)、统一数据管理(Unified Data Management，UDM)，统一数据仓储(Unified Data Repository，UDR)、归属用户服务器(Home Subscriber Server，HSS)、集中式网络配置(Centralized network configuration，CNC)、网络存储功能(Network Repository Function，NRF)，网络开放功能(Network Exposure Function，NEF)、本地NEF(Local NEF，或L-NEF)、绑定支持功能(Binding Support Function，BSF)、应用功能(Application Function，AF)等。需要说明的是，在本申请实施例中仅以NR系统中的核心网设备为例进行介绍，并不限定核心网设备的具体类型。
首先对本申请涉及的相关技术进行介绍。
一、NR-U consistent LBT failure cancelling。
NR-U中，UE在非授权频段上进行信道接入时需要做LBT。非授权频段上业务量大的时候，UE可能会遇到LBT失败的情况。根据网络配置的LBT恢复参数配置，UE需要判断何时触发持续先听后说失败(consistent LBT failure)。在触发持续LBT失败后，UE还需要判断何时取消持续LBT失败。当UE触发了持续LBT失败后，在上报持续LBT失败给网络后，或者完成随机接入等条件后，将会取消持续LBT失败。这意味着UE后续不需要再为这个已经取消的持续LBT失败再做其它动作。
在下述的情况中，UE取消持续LBT失败：
1、没有从低层收到LBT失败指示，且发送了一个媒体访问控制(Media Access Control,MAC)协议数据单元(Protocol Data Unit，PDU)，且该MAC PDU包含了LBT失败媒体访问控制控制单元(Media Access Control Control Element，MAC CE)；
2、对于LBT失败MAC CE中已经指示了持续LBT失败的辅小区(Secondary Cell，SCell(s))，取消所述SCell(s)的持续LBT失败；
3、如果在SpCell(Special Cell，即主小区(Primary Cell,PCell)或者主辅小区(Primary Secondary Cell，PSCell)上触发了持续LBT失败且没有取消，且在SpCell上认为成功完成了随机接入过程，取消该SpCell的所有持续LBT失败；
4、如果上层为一个服务小区重配置了LBT失败恢复配置信元，取消该服务小区的所有持续LBT失败；
5、如果激活的SCell的sCellDeactivationTimer超时；如果该服务小区有任何已触发的持续LBT失败，取消所述持续LBT失败；
6、如果上层要求重置MAC实体，MAC实体将：如果有任何已触发的持续LBT 失败，取消所述LBT失败；
7、如果MAC实体收到指示服务小区带宽部分(BWP，Bandwidth Part)切换的一个物理下行控制信道(Physical Downlink Control Channel,PDCCH)，MAC实体将：
如果该服务小区没有任何进行中的随机接入过程，或者，在收到用小区无线网络临时标识(Cell Radio Network Temporary Identity,C-RNTI)加扰的PDCCH时该服务小区进行中的随机接入过程成功地完成了，如果该服务小区有任何已触发的持续LBT失败，取消所述持续LBT失败。
二、NR-U信道接入优先级(Channel access priority class，CAPC)
eNB/gNB/UE在抢占信道之前都必须确定一个CAPC值，并据此查表1确定信道接入做LBT的窗口参数。CAPC的取值为p＝1～4，其中p＝1代表优先级最高，其对应的LBT窗口相对其它优先级较短，也即以p＝1做LBT成功所需的时间相对于p＝2/3/4平均来说更短。但是最大可占据的信道占用时间(channel occupancytime，COT)长度也相对应的较短，这体现了不同设备抢占信道某种程度的公平性。
表1 CAPC
对于p＝2and p＝4,若长期来看能保证没有其它RAT共享此信道(如法律法规限制)，Tmcot，p＝10ms；否则,Tmcot，p＝8ms。
当UE需要发送上行数据而去执行LBT时，需要根据待发送的数据类型、由协议约定或网络配置的方式，确定本次LBT的CAPC值。其中，当UE需要发送的数据包含信令无线承载SRB0/SRB1/SRB3承载的数据时，总是默认使用p＝1。而对于SRB2/数据无线承载(Data Radio Bearer,DRB)，网络侧可以为UE配置发送SRB2、DRB承载的数据的CAPC值。
三、NR-U multi-slot
在NR-U中，基站可以通过下行控制信息(Downlink Control Information，DCI)format 0_1为UE调度多个连续时隙的资源(multi-slot资源)，用于UE上行传输。UE通过DCI format 0_1可以确定使用multi-slot资源传输时所用的CAPC值。
四、SL资源分配方式
SL UE包括两种资源分配方式，mode1和mode2.其中mode1是基站调度资源，mode2是UE自己决定使用什么资源进行传输。资源信息可能来自基站的广播消息或者预配置的信息。UE如果工作在基站范围内并且与基站有无线资源控制(Radio Resource Control，RRC)连接，可以是mode1和/或mode2；UE如果工作在基站范围内，但与基站没有RRC连接，只能工作在mode2。如果UE在基站范围外，那么只能工作在mode2，且根据预配置的信息来进行SL传输。
对于mode 2，具体的工作方式如下：1)TX UE在资源选择被触发后，首先确定资源选择窗口，资源选择窗口的下边界在资源选择触发后的T1时间，资源选择的上边界在触发后的T2时间，其中T2是UE实现的方式在其传输块(Transmission Block，TB)传输的(分组延迟预算(packet delay budget，PDB)内选择的值，T2不早于T1。2)UE在资源选择的之前，需要确定资源选择的候选资源集合(candidate resource set)，根据资源选择窗口内的资源上测量的参考信号接收功率(Reference Signal Receiving Power,RSRP)与相应的RSRP阈值做对比，如果RSRP低于RSRP threhold，那么该资 源可以纳入候选资源集合。3)资源集合确定后，UE随机在候选资源集合中选择传输资源。另外，UE在本次传输可以为接下来的传输预留传输资源。
NR SL支持链式的资源预留方式，也就是，一个侧链路控制信息(Sidelink Control Information,SCI)可以指示包括当前的传输资源，可以在额外预留最多两个资源，在下一个资源周期内，可以再指示最多三个预留资源。在选择窗内，可以采用动态预留的方式持续预留资源。
在SL-U里，SL UE同样需要判断在什么条件下取消旁链路持续LBT失败。但是在NR-U中UE取消持续LBT失败的条件没办法直接复用到SL-U中，原因包括以下因素：
1.SL UE的资源分配模式区分为mode 1和mode 2；
2.处于RRC连接态的SL UE可能会遇到mode 1与mode 2之间模式切换；
3.SL的资源颗粒度与NR不同，SL的资源选择相关的问题通常以资源池(resource pool)为资源颗粒度展开讨论；
4.SL UE不仅与基站间有Uu空口，还有与其它UE间单独的PC5空口；
5.SL UE之间进行单播传输时，会建立PC5RRC链接；
综上所述，SL-U中UE取消旁链路持续LBT失败的条件需要重新单独设计。
本申请的核心思想是从持续LBT失败恢复、SL-U资源配置、SL模式转换等角度去全面阐述SL UE取消旁链路持续LBT失败的条件。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的持续LBT失败的处理方法进行详细地说明。
图2为本申请实施例提供的持续LBT失败的处理方法的流程示意图。如图2所示，该持续LBT失败的处理方法包括以下步骤：
步骤200、第一终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
本申请实施例提供了SL-U中UE取消旁链路持续LBT失败(sidelink consistent LBT failure)的条件，在终端触发了旁链路持续LBT失败的情况下，若满足第一条件，则取消旁链路持续LBT失败。
需要说明的是，触发LBT失败理解为触发生成LBT失败的事件，取消LBT失败可以理解为取消LBT失败事件。
本申请实施例提供的所有方案中所述的取消旁链路持续LBT失败，还可以理解为：
取消所有旁链路持续LBT失败；
取消某个资源颗粒度的资源上的旁链路持续LBT失败；
如果有任何已触发的旁链路持续LBT失败，取消所述旁链路持续LBT失败。
需要说明的是，本申请实施例提供的所有方案中所述的sidelink资源颗粒度，可理解为信道(channel)、资源块集合(Resource Block set，RB set)、资源池(resource pool)、带宽部分(Bandwidth Part,BWP)、载波carrier等资源颗粒度。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败，提供了SL-U中终端取消旁链路持续LBT失败的条件，可以使得终端在满足旁链路持续LBT失败取消条件时，能够及时取消旁链路持续LBT失败，提高终端的资源利用率。
可选地，所述第一条件包括以下至少一项：
1)所述第一终端向网络侧设备或第二终端发送第一指示信息，所述第一指示信息用于指示所述第一终端已触发的旁链路持续LBT失败，或者用于指示已触发的第一资源颗粒度的资源上的旁链路持续LBT失败；
可以理解，当第一终端向网络侧设备或第二终端指示了已触发的旁链路持续LBT失败(旁链路持续LBT失败)，第一终端则可以取消旁链路持续LBT失败。
或者，当终端向网络侧设备或其他SL UE指示已触发的第一资源颗粒度的资源上的旁链路持续LBT失败，第一终端取消旁链路持续LBT失败。
可选地，所述第一指示信息通过DCI或MAC CE或RRC信令携带。
可选地，在所述第一终端向网络侧设备或第二终端发送第一指示信息的情况下，所述取消所述旁链路持续LBT失败，包括以下至少一项：
a)取消所述第一指示信息所指示的资源上已触发的旁链路持续LBT失败；
b)取消所有已触发的旁链路持续LBT失败；
c)取消第二资源颗粒度的资源上已触发的旁链路持续LBT失败。
其中，所述第二资源颗粒度可以与第一资源颗粒度相同，也可以与第一资源颗粒度不同。
例如，如果UE向基站发送了MAC PDU，且该PDU包含了sidelink LBT failure MAC CE，则取消sidelink LBT failure MAC CE中所指示的资源上已触发的旁链路持续LBT失败，或者，取消所有已触发的旁链路持续LBT失败。
又例如，如果UE通过RRC信令向基站指示了旁链路持续LBT失败，则取消RRC信令所指示的资源上已触发的旁链路持续LBT失败；或者，取消所有已触发的旁链路持续LBT失败。
UE向其它SL UE指示旁链路持续LBT失败的处理方法类似，不作赘述。
又例如，如果UE向基站发送了第一指示信息，该第一指示信息指示的是已触发的第一资源颗粒度的资源上的旁链路持续LBT失败，则取消第二资源颗粒度的资源上已触发的旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，在终端向网络侧设备或其他终端发送了第一指示信息的情况下，取消旁链路持续LBT失败，可提高终端的资源利用率。
2)所述第一终端已执行旁链路传输，或者，所述第一终端完成旁链路持续LBT失败恢复；
可以理解，若第一终端已完成SL传输，或者完成旁链路持续LBT失败recovery，则第一终端后续不需要再为已触发的持续LBT失败再做其它动作。
在一些实施例中，所述第一终端已执行旁链路传输，包括以下至少一项：
a)所述第一终端在触发了旁链路持续LBT失败的资源上，已执行旁链路传输；
在一些实施例中，所述第一终端在触发了旁链路持续LBT失败的资源上，已执行旁链路传输，包括：
所述第一终端在第一资源颗粒度的第一资源上触发了旁链路持续LBT失败，和/或，在所述第一资源中的第二资源颗粒度的第二资源上触发了旁链路持续LBT失败，且没有取消所述第一资源和/或第二资源上的旁链路持续LBT失败，在所述第一资源和/或第二资源上已执行旁链路传输。
例如，如果UE第一资源颗粒度(channel/RB set/resource pool/BWP/carrier)的第一资源上触发了旁链路持续LBT失败，和/或，所述第一资源中的第二资源颗粒度(channel/RB set/resource pool/BWP/carrier)的第二资源发生了旁链路持续LBT失败，且没有取消所述第一资源和/或第二资源上的旁链路持续LBT失败，若UE在所述第一资源和/或第二资源上已完成sidelink传输(比如在所述第一资源里的第二资源颗粒度的第二资源或第二资源颗粒度的第三资源上发送了sidelink传输，即所述第三资源为第一资源里与第二资源相同颗粒度的资源)。
b)所述第一终端在触发了旁链路持续LBT失败的第一资源颗粒度的资源中的第 二资源颗粒度的资源上，已执行旁链路传输；
c)所述第一终端在包含触发了旁链路持续LBT失败的第一资源颗粒度的资源的第三资源颗粒度的资源上，已执行旁链路传输；
可选地，第一资源颗粒度大于等于第二资源颗粒度，小于等于第三资源颗粒度。
d)所述第一终端在特殊池(exceptional pool)上已执行旁链路传输，所述旁链路传输指示了旁链路持续LBT失败。
可选地，所述旁链路传输包括以下至少一项：
物理旁链路共享信道PSSCH或物理旁链路控制信道PSCCH；
旁链路同步信号块S-SSB或物理旁链路广播信道PSBCH；
物理旁链路反馈信道PSFCH。
可选地，在所述第一终端已执行旁链路传输的情况下，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消所述触发了旁链路持续LBT失败的资源上的旁链路持续LBT失败；
取消所述旁链路传输所指示的资源上的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败。
在一些实施例中，所述第一终端完成旁链路持续LBT失败恢复，包括：
所述第一终端在第一资源颗粒度的第四资源上完成旁链路持续LBT失败恢复。
可选地，所述完成旁链路持续LBT失败恢复，包括以下至少一项：
向网络侧设备或第二终端指示了旁链路持续LBT失败；
已完成第一资源颗粒度或第二资源颗粒度的资源切换或资源重选。
例如，若第一终端已完成channel/RB set/resource pool/BWP/carrier切换或重选，则认为该第一终端完成旁链路持续LBT失败恢复。
可选地，在所述第一终端完成旁链路持续LBT失败恢复的情况下，所述取消所述旁链路持续LBT失败，包括：
取消所述第四资源上的旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端已执行旁链路传输，或者，完成旁链路持续LBT失败恢复，则取消旁链路持续LBT失败，可提高终端的资源利用率。
3)所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息；
若终端接收到来自网络侧设备或第二终端的RRC重配置消息，则取消旁链路持续LBT失败。
可选地，所述取消旁链路持续LBT失败，还可以理解为取消所述RRC重配置消息中的信息对应的资源颗粒度的资源上的旁链路持续LBT失败。
可选地，所述RRC重配置消息包括以下至少一项：
旁链路传输资源，例如载波资源配置，BWP配置，resource pool配置；
旁链路传输资源的子载波间隔(Sub-Carrier Spacing，SCS)；
与所述旁链路持续LBT失败相关的第一参数。
例如，第一参数为sl-lbt-FailureRecoveryConfig。RRC重配置消息中包括sl-lbt-FailureRecoveryConfig，说明sl-lbt-FailureRecoveryConfig被重配置。
举例来说，在下述的情况中，UE取消旁链路持续LBT失败：
当UE的SL-U传输资源被重配置；或者，
当UE的SL-U传输资源的子载波间隔被重配置；或者，
与所述旁链路持续LBT失败相关的第一参数被重配置。
可选地，所述第一参数包括以下至少一项：
用于判断触发旁链路持续LBT失败所用的LBT计数器的最大次数值；
用于判断触发旁链路持续LBT失败所用的LBT检测计时器值。
可选地，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消重配置的第一资源颗粒度的旁链路传输资源上已触发的旁链路持续LBT失败；
取消重配置的第一资源颗粒度的旁链路传输资源内的第二资源颗粒度的所有资源上已触发的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败。
例如，如果重配置的资源(如RB set/resource pool/BWP/carrier)上有任何已触发的旁链路持续LBT失败，取消重配置的资源上的旁链路持续LBT失败；或者，取消所有已触发的旁链路持续LBT失败。
又例如，当UE的sl-lbt-FailureRecoveryConfig被重配置，则取消sl-lbt-FailureRecoveryConfig关联的资源颗粒度的资源上的旁链路持续LBT失败；或者，取消所有已触发的旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息，则取消旁链路持续LBT失败，可提高终端的资源利用率。
4)所述第一终端的第一信息被上层重配置，或者，所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息，且所述RRC重配置消息包含所述第一信息；所述上层为触发LBT失败的层的上层。
可以理解，在第一信息被上层重配置的情况下，取消旁链路持续LBT失败。可选地，所述取消旁链路持续LBT失败，还可以理解为取消所述第一信息对应的资源颗粒度的资源上的旁链路持续LBT失败。
可选地，所述第一信息包括以下至少一项：
旁链路传输资源；
旁链路传输资源的子载波间隔；
与所述旁链路持续LBT失败相关的第一参数。
举例来说，在下述的情况中，UE取消旁链路持续LBT失败：
当UE的SL-U传输资源被UE的上层重配置；或者，
当UE的SL-U传输资源的子载波间隔被UE的上层重配置；或者，
与所述旁链路持续LBT失败相关的第一参数被UE的上层重配置。
可选地，所述第一参数包括以下至少一项：
用于判断触发旁链路持续LBT失败所用的LBT计数器的最大次数值；
用于判断触发旁链路持续LBT失败所用的LBT检测计时器值。
可选地，在所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息，且所述RRC重配置消息包含所述第一信息的情况下，取消所述旁链路持续LBT失败。
可选地，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消重配置的第一资源颗粒度的旁链路传输资源上已触发的旁链路持续LBT失败；
取消重配置的第一资源颗粒度的旁链路传输资源内的第二资源颗粒度的所有资源上已触发的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败；
取消所述第一信息关联的第一资源颗粒度的资源上的旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端的第一信 息被上层重配置，或者，接收到来自网络侧设备或其他终端的RRC重配置消息，且所述RRC重配置消息包含所述第一信息，则取消旁链路持续LBT失败，可提高终端的资源利用率。
5)所述第一终端的PC5链路或Uu链路的第一协议层重置reset；
可选地，所述第一协议层包括以下至少一项：MAC/RLC/PDCP/SDAP。
可选地，所述第一协议层可以是UE与UE之间PC5空口上的协议层，也可以是UE与基站之间Uu空口上的协议层。
例如，如果第一终端的MAC层或RLC层或PDCP层或SDAP层重置，如果有任何已触发的旁链路持续LBT失败，则取消所述旁链路持续LBT失败。
可选地，在所述第一终端的PC5链路或Uu链路的第一协议层重置的情况下，所述取消所述旁链路持续LBT失败，包括：
取消所述第一协议层上已触发的旁链路持续LBT失败。
取消所述第一协议层上已触发的旁链路持续LBT失败，包括：取消该第一协议层上所有已触发的旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端的PC5链路或Uu链路的第一协议层重置，则取消旁链路持续LBT失败，可提高终端的资源利用率。
6)所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败；
可选地，所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败，包括以下至少一项：
所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在PC5链路上；
所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在Uu链路上。
可选地，在所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败的情况下，所述取消所述旁链路持续LBT失败，包括：
若所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在PC5链路上，取消所述PC5链路上所有的旁链路持续LBT失败；
若所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在Uu链路上，取消所述Uu链路上的所有旁链路持续LBT失败。
即在一些实施例中，若UE触发了RLF，则取消触发RLF的资源上的旁链路持续LBT失败，或者，取消PC5链路上的所有资源上的旁链路持续LBT失败，或者，取消Uu链路上的所有旁链路持续LBT失败。
若UE接收到RRC释放消息，则取消接收到RRC释放消息的资源上的旁链路持续LBT失败，或者，取消PC5链路上的所有资源上的旁链路持续LBT失败，或者，取消Uu链路上的所有旁链路持续LBT失败；
若UE的RRC重建失败发生在PC5链路上，则取消PC5链路上的所有资源上的旁链路持续LBT失败。
若UE的RRC重建失败发生在Uu链路上，则取消Uu链路上的所有旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端触发了 RLF，或者，接收到RRC释放消息，或者，RRC重建失败，则取消旁链路持续LBT失败，可提高终端的资源利用率。
7)所述第一终端的资源分配模式发生切换；
例如，在下述的情况中，UE取消旁链路持续LBT失败：
如果UE从mode 1切换到mode 2；或
如果UE从mode 2切换到mode 1。
可选的，所述第一终端可以是处于连接态(CONNECTED)的UE，也可以是从CONNECTED态转入空闲态(IDLE)或非激活态(INACTIVE)的UE，也可以是从IDLE/INACTIVE态转入CONNECTED态的UE。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端的资源分配模式发生切换，则取消旁链路持续LBT失败，可提高终端的资源利用率。
8)所述第一终端进行载波选择时未选择第一载波；
可以理解，若UE进行载波选择时，若UE不选择某个载波，如果该载波上触发了任何旁链路持续LBT失败，则UE取消该载波上已触发的旁链路持续LBT失败。
可选地，所述第一终端进行载波选择时未选择第一载波，包括以下至少一项：
所述第一终端不选择所述第一载波；
所述第一终端检测到所述第一载波的CBR超过第一阈值；
所述第一终端在载波聚合时去激活所述第一载波。
可选地，所述取消所述旁链路持续LBT失败，包括：
取消在所述第一载波上已触发的旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端进行载波选择时未选择第一载波，则取消该第一载波上的旁链路持续LBT失败，可提高终端的资源利用率。
9)所述第一终端已完成小区重选。
可以理解，当UE已完成小区重选后，UE取消旁链路持续LBT失败。
可选地，所述第一终端已完成小区重选，包括以下至少一项：
所述第一终端已完成小区重选，且重选的小区所配置的旁链路资源与重选前的服务小区所配置的旁链路资源部分不同或完全不同；
所述第一终端已完成小区重选，且重选的小区所配置的旁链路资源不包含所述第一终端的触发了旁链路持续LBT失败的资源。
可选地，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消触发了旁链路持续LBT失败的资源上的旁链路持续LBT失败；
取消所有旁链路持续LBT失败。
举例来说，在下述的情况中，UE取消旁链路持续LBT失败：
当UE已完成小区重选后；或
当UE已完成小区重选后，重选的小区所配置的sidelink资源与重选前的服务小区所配置的sidelink资源部分不同或完全不同；或
当UE已完成小区重选后，重选的小区配置的sidelink资源不包含UE触发了consistent LBT failure的资源。
则UE取消旁链路持续LBT失败包括：如果有任何已触发的旁链路持续LBT失败，取消所述旁链路持续LBT失败；或者，取消所述触发了consistent LBT failure的资源上的旁链路持续LBT失败；或者，取消所有旁链路持续LBT失败。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，若终端已完成小区重选，则取消旁链路持续LBT失败，可提高终端的资源利用率。
在本申请的一些实施例中，所述方法还包括：
在满足第二条件的情况下，所述第一终端不取消所述旁链路持续LBT失败；
可以理解，在一些情况下，UE不取消旁链路持续LBT失败。
其中，所述第二条件包括以下至少一项：
1)所述第一终端的资源分配模式发生了切换，但切换后所述第一终端所使用的资源并未发生变化；
可以理解，如果UE从mode 1切换到mode 2；或者，如果UE从mode 2切换到mode 1，即第一终端的资源分配模式发生了切换，若切换后UE所使用的资源没有改变，例如，载波没有改变，BWP没有改变，或资源池没有改变等。UE维持所使用的资源上的旁链路持续LBT失败。
2)所述第一终端已执行的旁链路传输为S-SSB或PSFCH或物理侧链路广播信道PSBCH；
可选地，UE在触发了consistent LBT failure之后，如果UE成功地进行了sidelink传输，且传输的是S-SSB或PSFCH或PSBCH，则UE不取消consistent LBT failure。
可选地，所述S-SSB为触发了旁链路持续LBT失败的资源内或资源外传输的S-SSB，或者，所述PSFCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSFCH，或者，所述PSBCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSBCH。
可选地，所述S-SSB或PSFCH或PSBCH为触发了consistent LBT failure的某个资源颗粒度的资源内或资源外传输的S-SSB或PSFCH或PSBCH。
3)在触发了旁链路持续LBT失败之后，所述第一终端已完成小区重选，且重选的小区所配置的sidelink资源与重选前的服务小区所配置的sidelink资源完全相同；
4)在触发了旁链路持续LBT失败之后，所述第一终端已完成小区重选，且重选的小区所配置的sidelink资源包含所述第一终端的触发了旁链路持续LBT失败的资源。
本申请实施例还提供了不取消旁链路持续LBT失败的几种情形，可避免取消旁链路持续LBT失败，提高终端通信质量。
在一些实施例中，所述第一终端触发了旁链路持续先听后说LBT失败之前，所述方法还包括：
在多个连续时隙的资源上执行LBT操作；
其中，所述第一终端确定所述多个连续时隙的资源传输所用的信道接入优先级CAPC值为多个传输块TB的CAPC值中最低优先级对应的CAPC值。
对于一个IDLE/INACTIVE UE，当UE进行sidelink传输时，若UE使用multi-slot资源传输，无法从基站获得multi-slot资源传输所使用的CAPC值，此时UE需要为其确定一个CAPC值，以进一步确定用何种物理层参数进行信道接入。
一种解决方法是：当UE使用multi-slot资源进行sidelink传输时，若所述multi-slot资源上传输多个TB，则UE确定该multi-slot传输所用的CAPC值为所有TB的CAPC值中最低优先级的CAPC值，也即CAPC值最大的那个值。
本申请实施例提供了当UE使用multi-slot资源进行sidelink传输时，终端确定CAPC值的方法，从而可以使终端能够进一步确定进行信道接入的物理层参数，提高终端信道接入的效率。
可选地，所述第一终端满足以下至少一项：
所述第一终端为使用mode 2资源分配模式的终端；
所述第一终端处于空闲态或非激活态；
所述第一终端为超出覆盖范围(Out-of-coverage，OOC)终端；
所述多个传输块TB包括初传TB和/或重传TB。
可选地，所述多个TB都为初传TB，或者既有初传TB也有重传TB，或者都为重 传TB。
本申请实施例提供的持续LBT失败的处理方法，执行主体可以为持续LBT失败的处理装置。本申请实施例中以持续LBT失败的处理装置执行持续LBT失败的处理方法为例，说明本申请实施例提供的持续LBT失败的处理装置。
图3为本申请实施例提供的持续LBT失败的处理装置的结构示意图。该持续LBT失败的处理装置应用于第一终端，如图3所示，该持续LBT失败的处理装置300包括：
处理单元310，用于触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
可选地，所述第一条件包括以下至少一项：
所述第一终端向网络侧设备或第二终端发送第一指示信息，所述第一指示信息用于指示所述第一终端已触发的旁链路持续LBT失败，或者用于指示已触发的第一资源颗粒度的资源上的旁链路持续LBT失败；
所述第一终端已执行旁链路传输，或者，所述第一终端完成旁链路持续LBT失败恢复；
所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息；
所述第一终端的第一信息被上层重配置，或者，所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息，且所述RRC重配置消息包含所述第一信息；
所述第一终端的PC5链路或Uu链路的第一协议层重置；
所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败；
所述第一终端的资源分配模式发生切换；
所述第一终端进行载波选择时未选择第一载波；
所述第一终端已完成小区重选。
可选地，所述第一指示信息通过DCI或MAC CE或RRC信令携带。
可选地，在向网络侧设备或第二终端发送第一指示信息的情况下，所述取消所述旁链路持续LBT失败，包括以下至少一项：取消所述第一指示信息所指示的资源上已触发的旁链路持续LBT失败；取消所有已触发的旁链路持续LBT失败；取消第二资源颗粒度的旁链路持续LBT失败。
可选地，所述已执行旁链路传输，包括以下至少一项：在触发了旁链路持续LBT失败的资源上，已执行旁链路传输；在触发了旁链路持续LBT失败的第一资源颗粒度的资源中的第二资源颗粒度的资源上，已执行旁链路传输；在包含触发了旁链路持续LBT失败的第一资源颗粒度的资源的第三资源颗粒度的资源上，已执行旁链路传输；在特殊池上已执行旁链路传输，所述旁链路传输指示了旁链路持续LBT失败。
可选地，所述在触发了旁链路持续LBT失败的资源上，已执行旁链路传输，包括：
在第一资源颗粒度的第一资源上触发了旁链路持续LBT失败，和/或，在所述第一资源中的第二资源颗粒度的第二资源上触发了旁链路持续LBT失败，且没有取消所述第一资源和/或第二资源上的旁链路持续LBT失败，在所述第一资源和/或第二资源上已执行旁链路传输。
可选地，所述旁链路传输包括以下至少一项：
物理旁链路共享信道PSSCH或物理旁链路控制信道PSCCH；
旁链路同步信号块S-SSB或物理旁链路广播信道PSBCH；
物理旁链路反馈信道PSFCH。
可选地，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消所述触发了旁链路持续LBT失败的资源上的旁链路持续LBT失败；
取消所述旁链路传输所指示的资源上的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败。
可选地，所述完成旁链路持续LBT失败恢复，包括：
在第一资源颗粒度的第四资源上完成旁链路持续LBT失败恢复。
可选地，所述完成旁链路持续LBT失败恢复，包括以下至少一项：
向网络侧设备或第二终端指示了旁链路持续LBT失败；
已完成第一资源颗粒度或第二资源颗粒度的资源切换或资源重选。
可选地，所述取消所述旁链路持续LBT失败，包括：
取消所述第四资源上的旁链路持续LBT失败。
可选地，所述第一信息包括以下至少一项：
旁链路传输资源；
旁链路传输资源的子载波间隔；
与所述旁链路持续LBT失败相关的第一参数。
可选地，所述第一参数包括以下至少一项：
用于判断触发旁链路持续LBT失败所用的LBT计数器的最大次数值；
用于判断触发旁链路持续LBT失败所用的LBT检测计时器值。
可选地，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消重配置的第一资源颗粒度的旁链路传输资源上已触发的旁链路持续LBT失败；
取消重配置的第一资源颗粒度的旁链路传输资源内的第二资源颗粒度的所有资源上已触发的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败；
取消所述第一信息关联的第一资源颗粒度的资源上的旁链路持续LBT失败。
可选地，在所述第一终端的PC5链路或Uu链路的第一协议层重置的情况下，所述取消所述旁链路持续LBT失败，包括：
取消所述第一协议层上已触发的旁链路持续LBT失败。
可选地，在触发了无线链路失败RLF，或者，接收到RRC释放消息，或者，所述第一终端RRC重建失败的情况下，所述取消所述旁链路持续LBT失败，包括：
若触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在PC5链路上，取消所述PC5链路上所有的旁链路持续LBT失败；
若触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在Uu链路上，取消所述Uu链路上的所有旁链路持续LBT失败。
可选地，所述进行载波选择时未选择第一载波，包括以下至少一项：
不选择所述第一载波；
检测到所述第一载波的CBR超过第一阈值；
在载波聚合时去激活所述第一载波。
可选地，所述取消所述旁链路持续LBT失败，包括：
取消在所述第一载波上已触发的旁链路持续LBT失败。
可选地，所述已完成小区重选，包括以下至少一项：
已完成小区重选，且重选的小区所配置的旁链路资源与重选前的服务小区所配置的旁链路资源部分不同或完全不同；
已完成小区重选，且重选的小区所配置的旁链路资源不包含所述第一终端的触发了旁链路持续LBT失败的资源。
可选地，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消触发了旁链路持续LBT失败的资源的旁链路持续LBT失败；
取消所有旁链路持续LBT失败。
可选地，所述方法还包括：
在满足第二条件的情况下，不取消所述旁链路持续LBT失败；
其中，所述第二条件包括以下至少一项：
资源分配模式发生了切换，但切换后所使用的资源并未发生变化；
已执行的旁链路传输为S-SSB或PSFCH或物理侧链路广播信道PSBCH；
在触发了旁链路持续LBT失败之后，已完成小区重选，且重选的小区所配置的sidelink资源与重选前的服务小区所配置的sidelink资源完全相同；
在触发了旁链路持续LBT失败之后，已完成小区重选，且重选的小区所配置的sidelink资源包含触发了旁链路持续LBT失败的资源。
可选地，所述S-SSB为触发了旁链路持续LBT失败的资源内或资源外传输的S-SSB，或者，所述PSFCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSFCH，或者，所述PSBCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSBCH。
可选地，所述装置还包括：
LBT监听单元，用于在多个连续时隙的资源上执行LBT操作；
其中，确定所述多个连续时隙的资源传输所用的信道接入优先级CAPC值为多个传输块TB的CAPC值中最低优先级对应的CAPC值。
可选地，所述第一终端满足以下至少一项：
所述第一终端为使用mode 2资源分配模式的终端；
所述第一终端处于空闲态或非激活态；
所述第一终端为超出覆盖范围OOC终端；
所述多个传输块TB包括初传TB和/或重传TB。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败，提供了SL-U中终端取消旁链路持续LBT失败的条件，可以使得终端在满足旁链路持续LBT失败取消条件时，能够及时取消旁链路持续LBT失败，提高终端的资源利用率。
本申请实施例中的持续LBT失败的处理装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的持续LBT失败的处理装置能够实现图2的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图4所示，本申请实施例还提供一种通信设备400，包括处理器401和存储器402，存储器402上存储有可在所述处理器401上运行的程序或指令，例如，该通信设备400为终端时，该程序或指令被处理器401执行时实现上述持续LBT失败的处理方法实施例的各个步骤，且能达到相同的技术效果。
本申请实施例还提供一种第一终端，包括处理器和通信接口，处理器用于触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。 该第一终端实施例与上述第一终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图5为实现本申请实施例的一种第一终端的硬件结构示意图。
该第一终端500包括但不限于：射频单元501、网络模块502、音频输出单元503、输入单元504、传感器505、显示单元506、用户输入单元507、接口单元508、存储器509以及处理器510等中的至少部分部件。
本领域技术人员可以理解，第一终端500还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器510逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图5中示出的第一终端结构并不构成对第一终端的限定，第一终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元504可以包括图形处理单元(Graphics Processing Unit，GPU)5041和麦克风5042，图形处理器5041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元506可包括显示面板5061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板5061。用户输入单元507包括触控面板5071以及其他输入设备5072中的至少一种。触控面板5071，也称为触摸屏。触控面板5071可包括触摸检测装置和触摸控制器两个部分。其他输入设备5072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元501接收来自网络侧设备的下行数据后，可以传输给处理器510进行处理；另外，射频单元501可以向网络侧设备发送上行数据。通常，射频单元501包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器509可用于存储软件程序或指令以及各种数据。存储器509可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器509可以包括易失性存储器或非易失性存储器，或者，存储器509可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器509包括但不限于这些和任意其它适合类型的存储器。
处理器510可包括一个或多个处理单元；可选的，处理器510集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器510中。
其中，处理器510，用于触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
可选的，所述第一条件包括以下至少一项：
所述第一终端向网络侧设备或第二终端发送第一指示信息，所述第一指示信息用于指示所述第一终端已触发旁链路持续LBT失败，或者用于指示已触发的第一资源颗粒度的资源上的旁链路持续LBT失败；
所述第一终端已执行旁链路传输，或者，所述第一终端完成旁链路持续LBT失败恢复；
所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息；
所述第一终端的第一信息被上层重配置，或者，所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息，且所述RRC重配置消息包含所述第一信息；
所述第一终端的PC5链路或Uu链路的第一协议层重置；
所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败；
所述第一终端的资源分配模式发生切换；
所述第一终端进行载波选择时未选择第一载波；
所述第一终端已完成小区重选。
可选的，所述第一指示信息通过DCI或MAC CE或RRC信令携带。
可选的，在所述第一终端向网络侧设备或第二终端发送第一指示信息的情况下，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消所述第一指示信息所指示的资源上已触发的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败；
取消第二资源颗粒度的旁链路持续LBT失败。
可选的，所述第一终端已执行旁链路传输，包括以下至少一项：
所述第一终端在触发了旁链路持续LBT失败的资源上，已执行旁链路传输；
所述第一终端在触发了旁链路持续LBT失败的第一资源颗粒度的资源中的第二资源颗粒度的资源上，已执行旁链路传输；
所述第一终端在包含触发了旁链路持续LBT失败的第一资源颗粒度的资源的第三资源颗粒度的资源上，已执行旁链路传输；
所述第一终端在特殊池上已执行旁链路传输，所述旁链路传输指示了旁链路持续LBT失败。
可选的，所述第一终端在触发了旁链路持续LBT失败的资源上，已执行旁链路传输，包括：
所述第一终端在第一资源颗粒度的第一资源上触发了旁链路持续LBT失败，和/或，在所述第一资源中的第二资源颗粒度的第二资源上触发了旁链路持续LBT失败，且没有取消所述第一资源和/或第二资源上的旁链路持续LBT失败，在所述第一资源和/或第二资源上已执行旁链路传输。
可选的，所述旁链路传输包括以下至少一项：
物理旁链路共享信道PSSCH或物理旁链路控制信道PSCCH；
旁链路同步信号块S-SSB或物理旁链路广播信道PSBCH；
物理旁链路反馈信道PSFCH。
可选的，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消所述触发了旁链路持续LBT失败的资源上的旁链路持续LBT失败；
取消所述旁链路传输所指示的资源上的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败。
可选的，所述第一终端完成旁链路持续LBT失败恢复，包括：
所述第一终端在第一资源颗粒度的第四资源上完成旁链路持续LBT失败恢复。
可选的，所述完成旁链路持续LBT失败恢复，包括以下至少一项：
向网络侧设备或第二终端指示了旁链路持续LBT失败；
已完成第一资源颗粒度或第二资源颗粒度的资源切换或资源重选。
可选的，所述取消所述旁链路持续LBT失败，包括：
取消所述第四资源上的旁链路持续LBT失败。
可选的，所述第一信息包括以下至少一项：
旁链路传输资源；
旁链路传输资源的子载波间隔；
与所述旁链路持续LBT失败相关的第一参数。
可选的，所述第一参数包括以下至少一项：
用于判断触发旁链路持续LBT失败所用的LBT计数器的最大次数值；
用于判断触发旁链路持续LBT失败所用的LBT检测计时器值。
可选的，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消重配置的第一资源颗粒度的旁链路传输资源上已触发的旁链路持续LBT失败；
取消重配置的第一资源颗粒度的旁链路传输资源内的第二资源颗粒度的所有资源上已触发的旁链路持续LBT失败；
取消所有已触发的旁链路持续LBT失败；
取消所述第一信息关联的第一资源颗粒度的资源上的旁链路持续LBT失败。
可选的，在所述第一终端的PC5链路或Uu链路的第一协议层重置的情况下，所述取消所述旁链路持续LBT失败，包括：
取消所述第一协议层上已触发的旁链路持续LBT失败。
可选的，在所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败的情况下，所述取消所述旁链路持续LBT失败，包括：
若所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在PC5链路上，取消所述PC5链路上所有的旁链路持续LBT失败；
若所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在Uu链路上，取消所述Uu链路上的所有旁链路持续LBT失败。
可选的，所述第一终端进行载波选择时未选择第一载波，包括以下至少一项：
所述第一终端不选择所述第一载波；
所述第一终端检测到所述第一载波的CBR超过第一阈值；
所述第一终端在载波聚合时去激活所述第一载波。
可选的，所述取消所述旁链路持续LBT失败，包括：
取消在所述第一载波上已触发的旁链路持续LBT失败。
可选的，所述第一终端已完成小区重选，包括以下至少一项：
所述第一终端已完成小区重选，且重选的小区所配置的旁链路资源与重选前的服务小区所配置的旁链路资源部分不同或完全不同；
所述第一终端已完成小区重选，且重选的小区所配置的旁链路资源不包含所述第一终端的触发了旁链路持续LBT失败的资源。
可选的，所述取消所述旁链路持续LBT失败，包括以下至少一项：
取消触发了旁链路持续LBT失败的资源的旁链路持续LBT失败；
取消所有旁链路持续LBT失败。
可选的，所述处理器510还用于：
在满足第二条件的情况下，所述第一终端不取消所述旁链路持续LBT失败；
其中，所述第二条件包括以下至少一项：
所述第一终端的资源分配模式发生了切换，但切换后所述第一终端所使用的资源并未发生变化；
所述第一终端已执行的旁链路传输为S-SSB或PSFCH或物理侧链路广播信道PSBCH；
在触发了旁链路持续LBT失败之后，所述第一终端已完成小区重选，且重选的小区所配置的sidelink资源与重选前的服务小区所配置的sidelink资源完全相同；
在触发了旁链路持续LBT失败之后，所述第一终端已完成小区重选，且重选的小区所配置的sidelink资源包含所述第一终端的触发了旁链路持续LBT失败的资源。
可选地，所述S-SSB为触发了旁链路持续LBT失败的资源内或资源外传输的S-SSB，或者，所述PSFCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSFCH，或者，所述PSBCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSBCH。
可选地，所述第一终端触发了旁链路持续先听后说LBT失败之前，所述方法还包括：
在多个连续时隙的资源上执行LBT操作；
其中，所述第一终端确定所述多个连续时隙的资源传输所用的信道接入优先级CAPC值为多个传输块TB的CAPC值中最低优先级对应的CAPC值。
可选地，所述第一终端满足以下至少一项：
所述第一终端为使用mode 2资源分配模式的终端；
所述第一终端处于空闲态或非激活态；
所述第一终端为超出覆盖范围OOC终端；
所述多个传输块TB包括初传TB和/或重传TB。
在本申请实施例中，终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败，提供了SL-U中终端取消旁链路持续LBT失败的条件，可以使得终端在满足旁链路持续LBT失败取消条件时，能够及时取消旁链路持续LBT失败，提高终端的资源利用率。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述持续LBT失败的处理方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的第一终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述持续LBT失败的处理方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述持续LBT失败的处理方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这 里不再赘述。
本申请实施例还提供了一种通信系统，包括：第一终端、网络侧设备或第二终端，所述第一终端可用于执行如上述的持续LBT失败的处理方法的实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台第一终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (29)

  1. 一种持续LBT失败的处理方法，包括：
    第一终端触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
    其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
  2. 根据权利要求1所述的方法，其中，所述第一条件包括以下至少一项：
    所述第一终端向网络侧设备或第二终端发送第一指示信息，所述第一指示信息用于指示所述第一终端已触发的旁链路持续LBT失败，或者用于指示已触发的第一资源颗粒度的资源上的旁链路持续LBT失败；
    所述第一终端已执行旁链路传输，或者，所述第一终端完成旁链路持续LBT失败恢复；
    所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息；
    所述第一终端的第一信息被上层重配置，或者，所述第一终端接收到来自网络侧设备或第二终端的无线资源控制RRC重配置消息，且所述RRC重配置消息包含所述第一信息，所述上层为触发LBT失败的层的上层；
    所述第一终端的PC5链路或Uu链路的第一协议层重置；
    所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败；
    所述第一终端的资源分配模式发生切换；
    所述第一终端进行载波选择时未选择第一载波；
    所述第一终端已完成小区重选。
  3. 根据权利要求2所述的方法，其中，所述第一指示信息通过下行控制信息DCI或媒体访问控制控制单元MAC CE或RRC信令携带。
  4. 根据权利要求2或3所述的方法，其中，在所述第一终端向网络侧设备或第二终端发送第一指示信息的情况下，所述取消所述旁链路持续LBT失败，包括以下至少一项：
    取消所述第一指示信息所指示的资源上已触发的旁链路持续LBT失败；
    取消所有已触发的旁链路持续LBT失败；
    取消第二资源颗粒度的资源上已触发的旁链路持续LBT失败。
  5. 根据权利要求2所述的方法，其中，所述第一终端已执行旁链路传输，包括以下至少一项：
    所述第一终端在触发了旁链路持续LBT失败的资源上，已执行旁链路传输；
    所述第一终端在触发了旁链路持续LBT失败的第一资源颗粒度的资源中的第二资源颗粒度的资源上，已执行旁链路传输；
    所述第一终端在包含触发了旁链路持续LBT失败的第一资源颗粒度的资源的第三资源颗粒度的资源上，已执行旁链路传输；
    所述第一终端在特殊池上已执行旁链路传输，所述旁链路传输指示了旁链路持续LBT失败。
  6. 根据权利要求5所述的方法，其中，所述第一终端在触发了旁链路持续LBT失败的资源上，已执行旁链路传输，包括：
    所述第一终端在第一资源颗粒度的第一资源上触发了旁链路持续LBT失败，和/或，在所述第一资源中的第二资源颗粒度的第二资源上触发了旁链路持续LBT失败，且没有取消所述第一资源和/或第二资源上的旁链路持续LBT失败，在所述第一资源和/或第二资源上已执行旁链路传输。
  7. 根据权利要求5或6所述的方法，其中，所述旁链路传输包括以下至少一项：
    物理旁链路共享信道PSSCH或物理旁链路控制信道PSCCH；
    旁链路同步信号块S-SSB或物理旁链路广播信道PSBCH；
    物理旁链路反馈信道PSFCH。
  8. 根据权利要求5-7中任一项所述的方法，其中，所述取消所述旁链路持续LBT失败，包括以下至少一项：
    取消所述触发了旁链路持续LBT失败的资源上的旁链路持续LBT失败；
    取消所述旁链路传输所指示的资源上的旁链路持续LBT失败；
    取消所有已触发的旁链路持续LBT失败。
  9. 根据权利要求2所述的方法，其中，所述第一终端完成旁链路持续LBT失败恢复，包括：
    所述第一终端在第一资源颗粒度的第四资源上完成旁链路持续LBT失败恢复。
  10. 根据权利要求9所述的方法，其中，所述完成旁链路持续LBT失败恢复，包括以下至少一项：
    向网络侧设备或第二终端指示了旁链路持续LBT失败；
    已完成第一资源颗粒度或第二资源颗粒度的资源切换或资源重选。
  11. 根据权利要求9或10所述的方法，其中，所述取消所述旁链路持续LBT失败，包括：
    取消所述第四资源上的旁链路持续LBT失败。
  12. 根据权利要求2所述的方法，其中，所述第一信息包括以下至少一项：
    旁链路传输资源；
    旁链路传输资源的子载波间隔；
    与所述旁链路持续LBT失败相关的第一参数。
  13. 根据权利要求12所述的方法，其中，所述第一参数包括以下至少一项：
    用于判断触发旁链路持续LBT失败所用的LBT计数器的最大次数值；
    用于判断触发旁链路持续LBT失败所用的LBT检测计时器值。
  14. 根据权利要求12或13所述的方法，其中，所述取消所述旁链路持续LBT失败，包括以下至少一项：
    取消重配置的第一资源颗粒度的旁链路传输资源上已触发的旁链路持续LBT失败；
    取消重配置的第一资源颗粒度的旁链路传输资源内的第二资源颗粒度的所有资源上已触发的旁链路持续LBT失败；
    取消所有已触发的旁链路持续LBT失败；
    取消所述第一信息关联的第一资源颗粒度的资源上的旁链路持续LBT失败。
  15. 根据权利要求2所述的方法，其中，在所述第一终端的PC5链路或Uu链路的第一协议层重置的情况下，所述取消所述旁链路持续LBT失败，包括：
    取消所述第一协议层上已触发的旁链路持续LBT失败。
  16. 根据权利要求2所述的方法，其中，在所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败的情况下，所述取消所述旁链路持续LBT失败，包括：
    若所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在PC5链路上，取消所述PC5链路上所有的旁链路持续LBT失败；
    若所述第一终端触发了无线链路失败RLF，或者，所述第一终端接收到RRC释放消息，或者，所述第一终端RRC重建失败发生在Uu链路上，取消所有Uu链路上的 旁链路持续LBT失败。
  17. 根据权利要求2所述的方法，其中，所述第一终端进行载波选择时未选择第一载波，包括以下至少一项：
    所述第一终端不选择所述第一载波；
    所述第一终端检测到所述第一载波的CBR超过第一阈值；
    所述第一终端在载波聚合时去激活所述第一载波。
  18. 根据权利要求17所述的方法，其中，所述取消所述旁链路持续LBT失败，包括：
    取消在所述第一载波上已触发的旁链路持续LBT失败。
  19. 根据权利要求2所述的方法，其中，所述第一终端已完成小区重选，包括以下至少一项：
    所述第一终端已完成小区重选，且重选的小区所配置的旁链路资源与重选前的服务小区所配置的旁链路资源部分不同或完全不同；
    所述第一终端已完成小区重选，且重选的小区所配置的旁链路资源不包含所述第一终端的触发了旁链路持续LBT失败的资源。
  20. 根据权利要求19所述的方法，其中，所述取消所述旁链路持续LBT失败，包括以下至少一项：
    取消触发了旁链路持续LBT失败的资源的旁链路持续LBT失败；
    取消所有旁链路持续LBT失败。
  21. 根据权利要求2-20中任一项所述的方法，其中，所述方法还包括：
    在满足第二条件的情况下，所述第一终端不取消所述旁链路持续LBT失败；
    其中，所述第二条件包括以下至少一项：
    所述第一终端的资源分配模式发生了切换，但切换后所述第一终端所使用的资源并未发生变化；
    所述第一终端已执行的旁链路传输为S-SSB或PSFCH或物理侧链路广播信道PSBCH；
    在触发了旁链路持续LBT失败之后，所述第一终端已完成小区重选，且重选的小区所配置的sidelink资源与重选前的服务小区所配置的sidelink资源完全相同；
    在触发了旁链路持续LBT失败之后，所述第一终端已完成小区重选，且重选的小区所配置的sidelink资源包含所述第一终端的触发了旁链路持续LBT失败的资源。
  22. 根据权利要求21所述的方法，其中，所述S-SSB为触发了旁链路持续LBT失败的资源内或资源外传输的S-SSB，或者，所述PSFCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSFCH，或者，所述PSBCH为触发了旁链路持续LBT失败的资源内或资源外传输的PSBCH。
  23. 根据权利要求1-22中任一项所述的方法，其中，所述第一终端触发了旁链路持续先听后说LBT失败之前，所述方法还包括：
    在多个连续时隙的资源上执行LBT操作；
    其中，所述第一终端确定所述多个连续时隙的资源传输所用的信道接入优先级CAPC值为多个传输块TB的CAPC值中最低优先级对应的CAPC值。
  24. 根据权利要求23所述的方法，其中，所述第一终端满足以下至少一项：
    所述第一终端为使用mode 2资源分配模式的终端；
    所述第一终端处于空闲态或非激活态；
    所述第一终端为超出覆盖范围OOC终端；
    所述多个传输块TB包括初传TB和/或重传TB。
  25. 一种持续LBT失败的处理装置，包括：
    处理单元，用于触发了旁链路持续先听后说LBT失败，在满足第一条件的情况下，取消所述旁链路持续LBT失败；
    其中，所述第一条件为用于判断是否满足取消所述旁链路持续LBT失败的条件。
  26. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至24中任一项所述的持续LBT失败的处理方法的步骤。
  27. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至24中任一项所述的持续LBT失败的处理方法的步骤。
  28. 一种计算机程序产品，所述计算机程序产品被存储在存储介质中，所述计算机程序产品被至少一个处理器执行以实现如权利要求1至24中任一项所述的持续LBT失败的处理方法。
  29. 一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如权利要求1至24中任一项所述的持续LBT失败的处理方法。
PCT/CN2023/127788 2022-11-04 2023-10-30 持续lbt失败的处理方法、装置、终端及存储介质 WO2024093921A1 (zh)

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