Continuous listen before talk (LBT) failure processing method and device

Abstract

The embodiment of the invention discloses a continuous listen before talk (LBT) failure processing method and device, and the method comprises the steps: determining whether to trigger resource reselection or not in response to the detection of the continuous LBT failure of a triggering side link (SL) on a resource block set (RB) set; wherein the terminal equipment is in a radio resource control (RRC) connection state, and the distribution mode of the SL sending resources of the terminal equipment is the mode that the terminal equipment autonomously selects the sending resources. Therefore, the problem of how to deal with the failure of triggering the SL continuous LBT on the RB set when the terminal equipment which is in the RRC connection state and runs in the state that the allocation mode of the SL sending resources is the second allocation mode (for example, the allocation mode of the SL sending resources is the mode of autonomously selecting the sending resources by the terminal equipment) is detected can be solved; according to the embodiment of the invention, the terminal equipment which is in the RRC connection state and runs in the SL sending resource distribution mode as the second distribution mode can be ensured to recover sidelink communication in time when the SL continuous LBT failure occurs, so that the communication efficiency of the terminal equipment for sidelink communication can be improved.

Description

Continuous listen-before-speak LBT failure processing method and device Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for handling failure of continuous listen-before-speak (LBT) communication. Background Art

[0002] To support direct communication between terminals, direct communication (also called sidelink, SL) was introduced. The interface between terminals is PC-5. Depending on the correspondence between the sending and receiving terminals, three transmission modes are supported on the sidelink: unicast, multicast, and broadcast.

[0003] In the related technology, the use of unlicensed spectrum is supported for Sidelink communication. Sidelink communication can use the spectrum of unlicensed frequency bands for communication. The spectrum of unlicensed frequency bands is open and can improve performance and speed through effective utilization. This scenario can be called Sindlink-U (Sidelink-Unlicensed, unlicensed spectrum of the sidelink) scenario. The terminal device also needs to perform LBT (listen before talk) when sending Sidelink data on the unlicensed spectrum. The continuous LBT mechanism is also applicable to Sidelink communication on the unlicensed spectrum.

[0004] However, there is currently a lack of effective means to deal with continuous LBT failure in SL.

[0005] Summary of the Invention

[0006] The embodiments of the present disclosure provide a method and device for handling failure of continuous listen-before-speak (LBT).

[0007] According to a first aspect of an embodiment of the present disclosure, a method for handling failure of continuous listen-before-speak (LBT) is proposed. The method is executed by a terminal device and includes:

[0008] In response to detecting that triggering of a sidelink SL continuous LBT on a resource block set RB set fails, determining whether to trigger resource reselection;

[0009] The terminal device is in a radio resource control RRC connection state, and the allocation method of the SL sending resources of the terminal device is a method in which the terminal device independently selects the sending resources.

[0010] According to a second aspect of an embodiment of the present disclosure, a method for handling failure of continuous listen-before-speak (LBT) is proposed. The method is executed by a network device and includes:

[0011] A first parameter is sent to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when it detects that SL continuous LBT fails to be triggered on the RB set.

[0012] According to a third aspect of an embodiment of the present disclosure, a method for handling failure of continuous listen-before-speak (LBT) is proposed. The method is executed by a network device and includes:

[0013] A first parameter is sent to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that SL continuous LBT fails to be triggered on the RB set.

[0014] According to a fourth aspect of an embodiment of the present disclosure, a method for handling failure of continuous listen-before-speak (LBT) is proposed, comprising:

[0015] The network device sends a first parameter to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when detecting that a failure to trigger SL continuous LBT on the RB set is detected;

[0016] The terminal device detects that the side link SL continuous LBT triggering on the resource block set RB set fails, triggering resource reselection.

[0017] According to a fifth aspect of an embodiment of the present disclosure, a method for handling failure of continuous listen-before-speak (LBT) is proposed, including:

[0018] The network device sends a first parameter to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that a failure to trigger SL continuous LBT on the RB set is detected;

[0019] The terminal device detects that the side link SL continuous LBT triggering on the resource block set RB set fails, and determines whether to trigger resource reselection based on the first parameter.

[0020] According to a sixth aspect of an embodiment of the present disclosure, a first communication device is provided, including:

[0021] a processing module, configured to determine whether to trigger resource reselection in response to detecting that a sidelink SL continuous LBT triggering fails on a resource block set RB set;

[0022] The first communication device is in a radio resource control RRC connection state, and the allocation method of the SL sending resources of the first communication device is a method in which the first communication device independently selects the sending resources.

[0023] According to a seventh aspect of an embodiment of the present disclosure, a second communication device is provided, including:

[0024] The transceiver module is used to send a first parameter to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when it detects that SL continuous LBT fails to be triggered on the RB set.

[0025] According to an eighth aspect of an embodiment of the present disclosure, a third communication device is provided, the device including:

[0026] The transceiver module is used to send a first parameter to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that SL continuous LBT fails to be triggered on the RB set.

[0027] According to a ninth aspect of an embodiment of the present disclosure, a communication system is provided, including:

[0028] The terminal device is configured to execute the method for handling failure of continuous listen-before-speak (LBT) described in the first aspect;

[0029] A network device is configured to execute the optional implementation of the aforementioned second and third aspects.

[0030] According to a tenth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0031] one or more processors;

[0032] The processor is used to call instructions to enable the communication device to execute the optional implementation methods of the aforementioned first aspect, second aspect and third aspect.

[0033] According to an eleventh aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes optional implementation methods of the aforementioned first, second and third aspects.

[0034] According to the technical solution disclosed in the present invention, the problem of how to handle the situation when a terminal device that is in an RRC connection state and running in the second allocation mode of SL transmission resource allocation (such as the SL transmission resource allocation mode is a mode in which the terminal device independently selects the transmission resource) detects that SL continuous LBT failure is triggered on the RB set can be solved. This can ensure that the terminal device that is in an RRC connection state and running in the second allocation mode of SL transmission resource allocation can restore the side link communication in time when SL continuous LBT failure occurs, thereby improving the communication efficiency of the terminal device in side link communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0036] FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0037] FIG2A is an interactive diagram illustrating a method for handling failure of continuous listening-before-speaking (LBT) according to an embodiment of the present disclosure;

[0038] FIG2B is an interactive diagram illustrating a method for handling failure of continuous listening-before-speaking (LBT) according to an embodiment of the present disclosure;

[0039] FIG3A is a flow chart illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure;

[0040] FIG3B is a flowchart illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure;

[0041] FIG3C is a flowchart illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure;

[0042] FIG4A is a flow chart illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure;

[0043] FIG4B is a flowchart illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure;

[0044] FIG5A is an interactive diagram illustrating a method for handling failure of continuous listening-before-speaking (LBT) according to an embodiment of the present disclosure;

[0045] FIG5B is an interactive diagram illustrating a method for handling failure of continuous listening-before-speaking (LBT) according to an embodiment of the present disclosure;

[0046] FIG6A is a schematic diagram of the structure of a terminal device proposed in an embodiment of the present disclosure;

[0047] FIG6B is a first structural diagram of a network device proposed in an embodiment of the present disclosure;

[0048] FIG6C is a second structural diagram of a network device proposed in an embodiment of the present disclosure;

[0049] FIG7A is a schematic structural diagram of a communication device 7100 proposed in an embodiment of the present disclosure;

[0050] FIG7B is a schematic structural diagram of a chip 7200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0051] The embodiments of the present disclosure provide a method and device for handling failure of continuous listen-before-speak (LBT).

[0052] In a first aspect, an embodiment of the present disclosure provides a method for handling failure of continuous listen-before-speak (LBT), which is executed by a terminal device and includes:

[0053] In response to detecting that triggering of a sidelink SL continuous LBT on a resource block set RB set fails, determining whether to trigger resource reselection;

[0054] The terminal device is in a radio resource control RRC connection state, and the allocation method of the SL sending resources of the terminal device is a method in which the terminal device independently selects the sending resources.

[0055] In the above embodiment, the problem of how to handle the situation when a terminal device that is in an RRC connection state and running in an SL transmission resource allocation mode of the second allocation mode (such as an SL transmission resource allocation mode in which the terminal device independently selects transmission resources) detects that a SL continuous LBT failure is triggered on an RB set can be solved. This can ensure that a terminal device that is in an RRC connection state and running in an SL transmission resource allocation mode of the second allocation mode can restore side link communication in a timely manner when an SL continuous LBT failure occurs, thereby improving the communication efficiency of the terminal device in side link communication.

[0056] In combination with some embodiments of the first aspect, in some embodiments, in response to detecting that a sidelink SL continuous LBT failure has been triggered on a resource block set RB set, determining whether to trigger resource reselection includes:

[0057] It is detected that the SL continuous LBT triggering on the RB set fails, triggering resource reselection.

[0058] In the above embodiment, when the terminal device detects that the SL continuous LBT triggering on the RB set fails, it directly triggers resource reselection, which can ensure that the terminal device in the RRC connection state and running in the second allocation mode of SL sending resources can restore the side link communication in time when the SL continuous LBT failure occurs, thereby improving the communication efficiency of the terminal device in side link communication.

[0059] With reference to some embodiments of the first aspect, in some embodiments, triggering resource reselection includes:

[0060] Determine a first resource pool where the RB set that triggers the SL continuous LBT failure is located;

[0061] determining a second resource pool when there is at least one RB set triggering the SL continuous LBT failure on the first resource pool;

[0062] Resource reselection is performed on the second resource pool.

[0063] In the above embodiment, when the terminal device detects that the SL continuous LBT triggering on the RB set fails, it can directly reselect the resource pool to ensure that there are sufficient resources in the selected resource pool, thereby improving resource utilization.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, determining the second resource pool includes:

[0065] The second resource pool is determined in one or more resource pools, wherein the one or more resource pools respectively include at least one RB set that does not trigger the SL continuous LBT failure.

[0066] In the above embodiment, it can be ensured that there are sufficient available resources in the selected resource pool.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, determining the second resource pool from one or more resource pools includes:

[0068] One or more second resource pools are determined from the plurality of resource pools.

[0069] In the above embodiment, it can be further ensured that there are sufficient available resources in the selected resource pool.

[0070] In combination with some embodiments of the first aspect, in some embodiments, in response to detecting that a sidelink SL continuous LBT failure has been triggered on a resource block set RB set, determining whether to trigger resource reselection includes:

[0071] If it is detected that the SL continuous LBT triggering on the RB set fails, resource reselection will not be triggered.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes at least one of the following:

[0073] Sending first information to a network device, where the first information includes information about the RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure;

[0074] The media access control MAC layer of the terminal device delivers second information to the physical layer of the terminal device, where the second information includes information of the RB set, and the second information is used by the physical layer to perform resource exclusion.

[0075] In the above embodiment, the terminal device submits the first information to the network device so that the network device understands the information of the RB set that triggered the SL continuous LBT failure, which facilitates the subsequent reliance on the network device to recover from the SL continuous LBT failure based on the information of the RB set, thereby improving resource utilization; the MAC layer of the terminal device submits the second information to the physical layer of the terminal device so that the physical layer understands the information of the RB set that triggered the SL continuous LBT failure, which facilitates the physical layer to exclude resources based on the information of the RB set in the subsequent resource reselection process, such as excluding resources on the RB set that was detected to trigger the SL continuous LBT failure, thereby ensuring that there are available resources for resource selection.

[0076] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first information to the network device includes:

[0077] The first information is sent through a medium access control MAC element CE.

[0078] In the above embodiment, the first information may be sent through existing MACCE signaling, which can save signaling overhead.

[0079] In conjunction with some embodiments of the first aspect, in some embodiments, determining whether to trigger resource reselection includes:

[0080] Determine whether to trigger resource reselection according to a first parameter configured by the network device.

[0081] In the above embodiment, the terminal device can determine whether to support resource reselection when detecting that SL continuous LBT failure is triggered on RB set based on the configuration of the network device, which can ensure that the side link communication is restored in time when SL continuous LBT failure occurs in the terminal device, thereby improving the communication efficiency of the terminal device in side link communication.

[0082] In conjunction with some embodiments of the first aspect, in some embodiments, determining whether to trigger resource reselection according to the first parameter configured by the network device includes at least one of the following:

[0083] Determining that the first parameter configured by the network device is received, triggering resource reselection;

[0084] Determining that the first parameter configured by the network device is not received does not trigger resource reselection.

[0085] Specifically, in some embodiments, resource reselection is triggered in response to the terminal device determining that the first parameter configured by the network device has been received; in other embodiments, resource reselection is triggered in response to the terminal device determining that the first parameter configured by the network device has not been received.

[0086] In the above embodiment, the terminal device can determine whether to support resource reselection when a failure to trigger SL continuous LBT on the RB set is detected based on whether the network device is configured with the first parameter. That is, the terminal device can determine whether the first parameter configured by the network device is received within a specified time range to determine whether to support resource reselection when a failure to trigger SL continuous LBT on the RB set is detected. In this way, it can be ensured that the side link communication is restored in a timely manner when a failure to trigger SL continuous LBT occurs in the terminal device, thereby improving the communication efficiency of the terminal device in performing side link communication.

[0087] In conjunction with some embodiments of the first aspect, in some embodiments, determining whether to trigger resource reselection according to the first parameter configured by the network device includes any one of the following:

[0088] When the first parameter configured in the network device is a first value, triggering resource reselection;

[0089] When the first parameter configured in the network device is a second value, resource reselection is not triggered.

[0090] In the above embodiment, the terminal device can determine whether to support resource reselection when detecting that SL continuous LBT failure is triggered on RB set based on the value of the first parameter configured by the network device, which can ensure that the side link communication is restored in time when SL continuous LBT failure occurs in the terminal device, thereby improving the communication efficiency of the terminal device in performing side link communication.

[0091] In combination with some embodiments of the first aspect, in some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0092] In a second aspect, an embodiment of the present disclosure provides a method for handling failure of continuous listen-before-speak (LBT), which is executed by a network device and includes:

[0093] A first parameter is sent to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when it detects that SL continuous LBT fails to be triggered on the RB set.

[0094] In the above embodiment, the network device sends a first parameter to the terminal device, so that after receiving the first parameter, the terminal device can determine to trigger resource reselection when it detects that SL continuous LBT fails to be triggered on the RB set, which can ensure that the terminal device can restore the side link communication in time when SL continuous LBT failure occurs, thereby improving the communication efficiency of the terminal device in side link communication.

[0095] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0096] Receive first information sent by the terminal device, where the first information includes information of the RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0097] In the above embodiment, the first information is sent to the network device through the terminal device, so that the network device can understand the information of the RB set that triggered the SL continuous LBT failure, which facilitates the subsequent reliance on the network device to realize the recovery of the SL continuous LBT failure based on the information of the RB set, thereby improving resource utilization.

[0098] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0099] Based on the first information, recovery of the SL continuous LBT failure is performed.

[0100] In the above embodiment, the network device implements recovery of SL continuous LBT failure based on the information of the RB set, thereby improving resource utilization.

[0101] In conjunction with some embodiments of the second aspect, in some embodiments, receiving the first information sent by the terminal device includes:

[0102] The first information sent by the terminal device is received through the media access control MAC control unit CE.

[0103] In the above embodiment, the first information can be received through existing MACCE signaling, which can save signaling overhead.

[0104] In combination with some embodiments of the second aspect, in some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0105] In a third aspect, an embodiment of the present disclosure provides a method for handling failure of continuous listen-before-speak (LBT), which is executed by a network device and includes:

[0106] A first parameter is sent to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that SL continuous LBT fails to be triggered on the RB set.

[0107] In combination with some embodiments of the third aspect, in some embodiments, the first parameter is a first value, and the first parameter is used to indicate that the terminal device triggers resource reselection when detecting a failure to trigger SL continuous LBT on the RB set; the first parameter is a second value, and the first parameter is used to indicate that the terminal device does not trigger resource reselection when detecting a failure to trigger SL continuous LBT on the RB set.

[0108] In combination with some embodiments of the third aspect, in some embodiments, the method further includes: receiving first information sent by the terminal device, the first information including information of the RB set, and the first information is used to indicate the RB set that triggers the continuous LBT failure of the SL.

[0109] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes:

[0110] Based on the first information, recovery of the SL continuous LBT failure is performed.

[0111] In conjunction with some embodiments of the third aspect, in some embodiments, receiving the first information sent by the terminal device includes:

[0112] The first information sent by the terminal device is received through the media access control MAC control unit CE.

[0113] In combination with some embodiments of the third aspect, in some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0114] In a fourth aspect, the present disclosure provides a method for handling failures of continuous listen-before-speak (LBT), including:

[0115] The network device sends a first parameter to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when detecting that a failure to trigger SL continuous LBT on the RB set is detected;

[0116] The terminal device detects that the side link SL continuous LBT triggering on the resource block set RB set fails, triggering resource reselection.

[0117] In a fifth aspect, the present disclosure provides a method for handling failures of continuous listen-before-speak (LBT), including:

[0118] The network device sends a first parameter to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that a failure to trigger SL continuous LBT on the RB set is detected;

[0119] The terminal device detects that the side link SL continuous LBT triggering on the resource block set RB set fails, and determines whether to trigger resource reselection based on the first parameter.

[0120] In a sixth aspect, an embodiment of the present disclosure provides a first communication device, including:

[0121] a processing module, configured to determine whether to trigger resource reselection in response to detecting that a sidelink SL continuous LBT triggering fails on a resource block set RB set;

[0122] The first communication device is in a radio resource control RRC connection state, and the allocation method of the SL sending resources of the first communication device is a method in which the first communication device independently selects the sending resources.

[0123] In combination with some embodiments of the sixth aspect, in some embodiments, the processing module is specifically used to: detect that a failure to trigger continuous LBT of SL on RB set occurs, and trigger resource reselection.

[0124] In combination with some embodiments of the sixth aspect, in some embodiments, the implementation method of the processing module triggering resource reselection may be as follows: determine the first resource pool where the RB set that triggers the SL continuous LBT failure is located; when there is at least one RB set that triggers the SL continuous LBT failure on the first resource pool, determine the second resource pool; and perform resource reselection on the second resource pool.

[0125] In combination with some embodiments of the sixth aspect, in some embodiments, the implementation method of the processing module determining the second resource pool may be as follows: determining the second resource pool in one or more resource pools, wherein the one or more resource pools respectively include at least one RB set that does not trigger the SL continuous LBT failure.

[0126] In combination with some embodiments of the sixth aspect, in some embodiments, the processing module may determine the second resource pool in one or more resource pools in the following manner: determine one or more second resource pools in the multiple resource pools.

[0127] In combination with some embodiments of the sixth aspect, in some embodiments, the processing module is specifically used to: detect that a failure to trigger SL continuous LBT on the RB set is failed, and not trigger resource reselection.

[0128] In combination with some embodiments of the sixth aspect, in some embodiments, the device also includes a transceiver module, which is used to perform at least one of the following: sending first information to a network device, the first information including information of the RB set, and the first information is used to indicate the RB set that triggers the continuous LBT failure of the SL; submitting the second information to the physical layer of the first communication device, the second information including information of the RB set, and the second information is used for the physical layer to perform resource exclusion.

[0129] In combination with some embodiments of the sixth aspect, in some embodiments, the transceiver module is specifically used to: send the first information through a media access control MAC control unit CE.

[0130] In combination with some embodiments of the sixth aspect, in some embodiments, the implementation method of the processing module determining whether to trigger resource reselection may include any one of the following: receiving a first parameter configured by the network device, triggering resource reselection; determining that the network device is not configured with the first parameter, and not triggering resource reselection.

[0131] In combination with some embodiments of the sixth aspect, in some embodiments, the implementation method of the processing module determining whether to trigger resource reselection may include: obtaining a first parameter, the first parameter being used to indicate whether the terminal device triggers resource reselection when detecting a failure to trigger SL continuous LBT on the RB set; determining whether to trigger resource reselection based on the first parameter.

[0132] In combination with some embodiments of the sixth aspect, in some embodiments, the processing module determines whether to trigger resource reselection based on the first parameter, and the implementation method includes any one of the following: the first parameter is a first value, triggering resource reselection; the first parameter is a second value, not triggering resource reselection.

[0133] In combination with some embodiments of the sixth aspect, in some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0134] In a seventh aspect, an embodiment of the present disclosure provides a second communication device, including:

[0135] The transceiver module is used to send a first parameter to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when it detects that SL continuous LBT fails to be triggered on the RB set.

[0136] In conjunction with some embodiments of the seventh aspect, in some embodiments, the transceiver module is further configured to:

[0137] Receive first information sent by the terminal device, where the first information includes information of the RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0138] In combination with some embodiments of the seventh aspect, in some embodiments, the device further includes: a processing module, and the processing module is used to recover the SL continuous LBT failure based on the first information.

[0139] In conjunction with some embodiments of the seventh aspect, in some embodiments, the transceiver module is specifically configured to:

[0140] The first information sent by the terminal device is received through the media access control MAC control unit CE.

[0141] In combination with some embodiments of the seventh aspect, in some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0142] In an eighth aspect, an embodiment of the present disclosure provides a third communication device, including:

[0143] The transceiver module is used to send a first parameter to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that SL continuous LBT fails to be triggered on the RB set.

[0144] In combination with some embodiments of the eighth aspect, in some embodiments, the first parameter is a first value, and the first parameter is used to indicate that the terminal device triggers resource reselection when detecting a failure to trigger SL continuous LBT on the RB set; the first parameter is a second value, and the first parameter is used to indicate that the terminal device does not trigger resource reselection when detecting a failure to trigger SL continuous LBT on the RB set.

[0145] In conjunction with some embodiments of the eighth aspect, in some embodiments, the transceiver module is further configured to:

[0146] Receive first information sent by the terminal device, where the first information includes information of the RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0147] In combination with some embodiments of the eighth aspect, in some embodiments, the device further includes: a processing module, and the processing module is used to recover the SL continuous LBT failure based on the first information.

[0148] With reference to some embodiments of the eighth aspect, in some embodiments, the transceiver module is specifically configured to:

[0149] The first information sent by the terminal device is received through the media access control MAC control unit CE.

[0150] In combination with some embodiments of the eighth aspect, in some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0151] In a ninth aspect, an embodiment of the present disclosure provides a communication system, including:

[0152] The terminal device is configured to execute the method for handling failure of continuous listen-before-speak (LBT) described in the first aspect;

[0153] A network device is configured to execute the optional implementation of the aforementioned second and third aspects.

[0154] In a tenth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned first aspect.

[0155] In an eleventh aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned second aspect.

[0156] In the twelfth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned third aspect.

[0157] In the thirteenth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the optional implementation methods of the aforementioned first aspect, second aspect and third aspect.

[0158] In a fourteenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first aspect, the second aspect and the third aspect.

[0159] In a fifteenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first, second and third aspects.

[0160] In a sixteenth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first, second, and third aspects above.

[0161] It is understandable that the above-mentioned terminal devices, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0162] The present disclosure provides a method and apparatus for handling a continuous listen-before-speak (LBT) failure. In some embodiments, the term "continuous listen-before-speak (LBT) failure handling method" is interchangeable with terms such as an information processing method and a communication method. The term "continuous listen-before-speak (LBT) failure handling apparatus" is interchangeable with terms such as an information processing apparatus and a communication apparatus. The terms "information processing system" and "communication system" are interchangeable.

[0163] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0164] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0165] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0166] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0167] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0168] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0169] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0170] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0171] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0172] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0173] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0174] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0175] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0176] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0177] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0178] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0179] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0180] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0181] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0182] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one network device and one terminal device. The number and configuration of devices shown in Figure 1 are for example purposes only and do not limit the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. The communication system 100 shown in Figure 1 includes, for example, one network device 101 and one terminal device 102.

[0183] In some embodiments, the network device 101 may be an access network device. In some embodiments, the access network device is, for example, a node or device that connects a terminal device to a wireless network. The access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a NodeB (NB), a home nodeB (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0184] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0185] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0186] In some embodiments, the terminal device 102 is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device may be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. At least one of the following. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal device.

[0187] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0188] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0189] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0190] It should be noted that to support direct communication between terminals, a direct link (also called sidelink, SL) communication mode is introduced, and the interface between terminals is PC-5. Based on the correspondence between the transmitting and receiving terminals, three transmission modes are supported on the sidelink: unicast, multicast, and broadcast. The transmitting terminal sends sidelink control information (SCI) on the physical sidelink control channel (PSCCH) and second-stage SCI on the physical sidelink shared channel (PSSCH). These SCIs carry the resource location of the transmitted data as well as the source and destination identifiers. For packets with HARQ (Hybrid Automatic Repeat reQuest) feedback enabled, the receiving terminal provides HARQ-ACK (Hybrid Automatic Retransmission Request Acknowledgement) feedback on the physical sidelink feedback channel (PSFCH).

[0191] In some embodiments, Sidelink communication has two SL transmission resource allocation methods, including a first allocation method (also called mode 1) and a second allocation method (also called mode 2). The first allocation method is a method in which the network device dynamically schedules, and the second allocation method is a method in which the terminal device autonomously selects transmission resources. Dynamic scheduling means that the network device dynamically allocates transmission resources on the Sidelink to the terminal device based on the cached data reported by the terminal device, while autonomous selection means that the terminal device randomly selects transmission resources from the resource pool configured or pre-configured by the network device. The network device can configure multiple resource pools for the terminal device on one BWP. The specific allocation method to be used is configured by the network device through RRC signaling.

[0192] Version R18 supports Sidelink communication using unlicensed spectrum. Sidelink communication can use unlicensed frequency band spectrum for communication. The unlicensed frequency band spectrum is open and can improve performance and speed through effective utilization. This scenario can be called Sindlink-U (Sidelink-Unlicensed, unlicensed spectrum of the sidelink) scenario. The terminal device also needs to perform LBT (listen before talk) when sending Sidelink data on the unlicensed spectrum. In some embodiments, the terminal device must first sense the communication channel to determine whether the channel is busy. If the channel is detected to be busy, LBT fails and it is necessary to wait for a period of time before performing LBT again.

[0193] In some embodiments, the continuous LBT mechanism is also applicable to Sidelink communications on unlicensed spectrum. The terminal device counts the number of LBT failures on each BWP (Bandwidth Part). The network device configures the maximum number of SL continuous LBT failures (Lbt-FailureInstanceMaxCount) and the SL continuous LBT failure detection timer (Lbt-FailureDetectionTimer) for the terminal device at the cell granularity (per serving cell) through RRC (Radio Resource Control) signaling (Lbt-FailureRecoveryConfig) to count SL continuous LBT failures. The terminal device maintains a variable (such as LBT_counter) for each cell, and the initial value of the variable is 0. For each activated cell configured with Lbt-FailureRecoveryConfig, when the terminal device receives the LBT failure indication submitted by the physical layer, it starts or restarts the Lbt-FailureDetectionTimer, and the variable is increased by 1. When the variable is greater than or equal to the Lbt-FailureInstanceMaxCount, the activated BWP on the cell triggers SL continuous LBT failure.

[0194] In some embodiments, the granularity of SL continuous LBT failure is the granularity of resource block set (RB set), that is, the terminal device counts whether the LBT failure indication on an RB set reaches a preset number within a period of time, and determines whether SL continuous LBT failure is triggered on this RB set.

[0195] However, there is currently a lack of effective means to deal with continuous LBT failure in SL.

[0196] To this end, the embodiments of the present disclosure provide a method and device for handling continuous listen-before-speak LBT failure, which can solve the problem of how to handle the situation when a terminal device that is in an RRC connection state and running in a second allocation mode of SL sending resource allocation (such as a mode of allocating SL sending resources in which the terminal device autonomously selects sending resources) detects that SL continuous LBT failure is triggered on an RB set.

[0197] FIG2A is an interactive diagram illustrating a method for handling a continuous listen-before-speak (LBT) failure according to an embodiment of the present disclosure. As shown in FIG2A , the method for handling a continuous listen-before-speak (LBT) failure according to an embodiment of the present disclosure can be applied to a communication system 100. The method includes:

[0198] Step S2101 , the network device 101 sends a first parameter to the terminal device 102 .

[0199] In some embodiments, the terminal device 102 receives a first parameter, wherein the first parameter may have other names, which are not specifically limited in this disclosure.

[0200] In an embodiment of the present disclosure, the first parameter may be used to instruct the terminal device 102 to trigger resource reselection when a failure to trigger SL continuous LBT on the RB set is detected.

[0201] In an embodiment of the present disclosure, the terminal device 102 is in an RRC connected state, and the SL sending resource allocation method of the terminal device 102 is a method in which the terminal device independently selects the sending resource.

[0202] Of course, it should be understood that the terminal device may also be in other states, such as RRC idle state, RRC inactive state, etc.

[0203] In some embodiments, the above-mentioned first parameter can be indicated by enable / value 1. If the network device 101 is configured with the above-mentioned first parameter, it indicates that the terminal device 102 in the RRC connection state and running in the above-mentioned second allocation mode (that is, the allocation mode of SL sending resources is a mode in which the terminal device autonomously selects sending resources) supports resource reselection when it detects that the SL continuous LBT fails to be triggered on the RB set. If the network device 101 is not configured with the above-mentioned first parameter, it indicates that the terminal device 102 in the RRC connection state and running in the above-mentioned second allocation mode (that is, the allocation mode of SL sending resources is a mode in which the terminal device autonomously selects sending resources) does not support resource reselection when it detects that the SL continuous LBT fails to be triggered on the RB set.

[0204] In some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0205] In some embodiments, the terminal device 102 may obtain the parameter through configuration or pre-configuration. Optionally, the terminal device 102 in the RRC connected state may obtain the first parameter through dedicated signaling. In one possible implementation, the terminal device 102 in the RRC connected state may obtain the first parameter from the network device through RRC dedicated signaling.

[0206] In some embodiments, when the terminal device 102 is in the RRC IDLE / INACTIVE state, the terminal device 102 can obtain the above-mentioned first parameter from the network device through the SIB (System Information Block).

[0207] In some embodiments, when the terminal device 102 is in an OOC (Out Of Coverage) state, the terminal device 102 may obtain the first parameter through pre-configuration.

[0208] Step S2102: The terminal device 102 determines that the first parameter configured by the network device 101 is received, detects that the SL continuous LBT triggering on the RB set fails, and triggers resource reselection.

[0209] In some embodiments, when the terminal device 102 receives the first parameter sent by the network device 101, it determines that the network device 101 is configured with the first parameter. One possible implementation of the terminal device 102 determining that the network device 101 is not configured with the first parameter is as follows: if the terminal device 102 does not receive the first parameter from the network device 101, that is, if the terminal device 102 does not receive the first parameter from the network device 101, the terminal device 102 may determine that the network device 101 is not configured with the first parameter.

[0210] In some embodiments, the terminal device 102 determines that the network device 101 configures the first parameter. If it is detected that the SL continuous LBT failure is triggered on the RB set, the terminal device 102 cannot select resources on the RB set that triggered the SL continuous LBT failure.

[0211] In some embodiments, the terminal device 102 determines that the network device 101 configures the first parameter. If it is detected that the SL continuous LBT failure is triggered on the RB set, the terminal device 102 can determine the first resource pool where the RB set that triggers the SL continuous LBT failure is located.

[0212] In some embodiments, when the terminal device determines that there is no RB set that does not trigger SL continuous LBT failure in the first resource pool, a second resource pool can be determined; and resource reselection can be performed in the second resource pool.

[0213] In some embodiments, when the terminal device determines that there are no specific number of RB sets that have not triggered SL continuous LBT failures on the first resource pool, a second resource pool can be determined to perform resource reselection on the second resource pool. The second resource pool is different from the first resource pool. The specific number can be at least one, that is, it can be one or more, and the specific value of the specific number can be determined by the terminal device itself, or can be pre-configured by the network device. That is, when the terminal device determines that the number of RB sets that have not triggered SL continuous LBT failures on the first resource pool does not reach a specific threshold, it can be considered that the first resource pool does not have sufficient resources, and thus, it is necessary to determine a second resource pool to perform resource reselection on the second resource pool. In some embodiments, the terminal determines the second resource pool for resource reselection only when there are no RB sets that have not triggered SL continuous LBT failures on the first resource pool. In other embodiments, as long as the terminal determines that the number of RB sets that have not triggered SL continuous LBT failures on the first resource pool does not reach a predetermined number, the second resource pool is determined for resource reselection.

[0214] In one possible implementation, when all RB sets on the selected resource pool trigger SL continuous LBT failure, the terminal device 102 in the RRC connected state and running in mode 2 reselects the resource pool. Even if not all RB sets trigger SL continuous LBT failure, the terminal device 102 in the RRC connected state and running in mode 2 may reselect the resource pool according to the implementation, for example, when the terminal device 102 in the RRC connected state and running in mode 2 detects that there are insufficient resources in the currently selected resource pool.

[0215] In some embodiments, the terminal device 102 may determine the second resource pool from one or more resource pools, wherein the one or more resource pools respectively include at least one RB set that does not trigger SL continuous LBT failure.

[0216] Optionally, when the terminal device 102 in the RRC connected state and operating in mode 2 reselects a resource pool, the terminal device 102 may reselect a resource pool from one or more resource pools having at least one RB set in which no SL continuous LBT failure is detected, according to the implementation.

[0217] In some embodiments, the terminal device 102 may determine one or more of the second resource pools from the multiple resource pools; wherein the multiple resource pools respectively include at least one RB set that does not trigger SL continuous LBT failure.

[0218] Optionally, if there are multiple resource pools each having at least one RB set without detecting SL continuous LBT failure, the terminal device 102 in the RRC connected state and running in mode 2 can select one or more second resource pools from the multiple resource pools according to the implementation.

[0219] Step S2103 , the terminal device 102 sends first information to the network device 101 .

[0220] In some embodiments, the network device 101 receives the first information.

[0221] In an embodiment of the present disclosure, the first information includes RB set information. In some embodiments, the RB set information may include the identifier of the RB set.

[0222] In the embodiment of the present disclosure, the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0223] In some embodiments, the terminal device 102 sends the first information via a MACCE (Media Access Control Element). Optionally, the terminal device 102 may report the first information via a MACCE to inform the network device which RB set or sets triggered the SL continuous LBT failure.

[0224] In some embodiments, the terminal device 102 sends a MACCE including the first information. Alternatively, the network device 101 receives a MACCE including the first information. The first information may be, for example, but not limited to, an indication of SL continuous LBT failure.

[0225] In some embodiments, the terminal device 102 detects that a continuous SL LBT failure has been triggered on an RB set, and the terminal device 102 sends a first message to the network device 101 to report to the network device 101 the information of the RB set on which the continuous SL LBT failure has been detected, and the terminal device 102 triggers resource reselection. Optionally, the terminal device 102 detects that a continuous SL LBT failure has been triggered on an RB set, and the terminal device 102 reports to the network device 101 the information of the RB set on which the continuous SL LBT failure has been detected through the first message, and the MAC layer of the terminal device 102 triggers resource reselection, for example, the MAC layer submits parameters to the physical layer. The physical layer provides candidate resources based on the parameters. The MAC layer obtains the candidate resources provided by the physical layer and performs resource reselection among the candidate resources.

[0226] In step S2104 , the MAC (Media Access Control) layer of the terminal device 102 delivers the second information to the physical layer (PHY) of the terminal device 102 .

[0227] In an embodiment of the present disclosure, the second information includes information of an RB set. The second information is used for resource exclusion at the physical layer.

[0228] In some embodiments, the terminal device 102 detects that a continuous SL LBT failure has been triggered on an RB set, and the MAC layer of the terminal device 102 delivers second information to the physical layer of the terminal device 102, while the terminal device 102 triggers resource reselection. Optionally, the terminal device 102 detects that a continuous SL LBT failure has been triggered on an RB set, and the MAC layer delivers the second information and parameters for resource selection / reselection to the physical layer. The physical layer provides candidate resources based on the parameters and the second information, and the candidate resources provided by the physical layer exclude the RB set that triggered the continuous SL LBT failure. The MAC layer obtains the candidate resources provided by the physical layer and performs resource reselection among the candidate resources.

[0229] Step S2105: The network device 101 recovers the SL continuous LBT failure based on the first information.

[0230] In some embodiments, the network device 101 receives the above-mentioned first information sent by the terminal device 102 and can recover the SL continuous LBT failure. For example, the network device 101 recovers the SL continuous LBT failure of the RB set associated with the first information based on the above-mentioned first information. For example, the network device 101 can send resource reconfiguration signaling to the terminal device 102 based on the above-mentioned first information.

[0231] Step S2106: The terminal device 102 determines that the first parameter configured by the network device 101 is not received, detects that the SL continuous LBT triggering on the RB set fails, and does not trigger resource reselection.

[0232] In some embodiments, terminal device 102 determines that network device 101 is not configured with the first parameter, and terminal device 102 detects a failure to trigger SL continuous LBT on an RB set. The MAC layer of terminal device 102 does not trigger resource reselection. Optionally, the MAC layer does not notify the physical layer of the information about the RB set in which the SL continuous LBT failure was detected. Terminal device 102 reports the information about the RB set in which the SL continuous LBT failure was detected to network device 101 via the first information, and subsequently relies on network device 101 to recover from the SL continuous LBT failure.

[0233] In some embodiments, when terminal device 102 determines that network device 101 is not configured with the first parameter and detects a failure to trigger continuous SL LBT on an RB set, the MAC layer of terminal device 102 does not trigger resource reselection. However, the MAC layer still notifies the physical layer of information about the RB set in which the continuous SL LBT failure was detected. This RB set information can be used in subsequent resource reselection to allow the physical layer to exclude resources from the RB set in which the continuous SL LBT failure was detected.

[0234] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0235] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0236] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0237] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0238] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0239] The method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2106 can be implemented as an independent embodiment, step S2101 + step S2102 can be implemented as an independent embodiment, step S2101 + step S2102 + step S2103 + step S2105 can be implemented as an independent embodiment, step S2101 + step S2102 + step S2104 can be implemented as an independent embodiment, step S2106 + step S2103 + step S2105 can be implemented as an independent embodiment, and step S2106 + step S2104 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0240] In some embodiments, step S2103 and step S2104 may be executed in an interchanged order or simultaneously.

[0241] In some embodiments, steps S2103, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0242] In some embodiments, steps S2101, S2102, S2104, and S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0243] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2A .

[0244] FIG2B is an interactive diagram illustrating a method for handling a continuous listen-before-speak (LBT) failure according to an embodiment of the present disclosure. As shown in FIG2B , the method for handling a continuous listen-before-speak (LBT) failure according to an embodiment of the present disclosure can be applied to a communication system 100. The method includes:

[0245] Step S2201: The network device 101 sends a first parameter to the terminal device 102.

[0246] In some embodiments, the terminal device 102 receives the first parameter.

[0247] In an embodiment of the present disclosure, the first parameter may be used to indicate whether the terminal device triggers resource reselection when detecting a failure to trigger SL continuous LBT on an RB set. The first parameter may have other names, which are not specifically limited in the present disclosure.

[0248] In an embodiment of the present disclosure, the terminal device 102 is in an RRC connected state, and the SL sending resource allocation method of the terminal device 102 is a method in which the terminal device independently selects the sending resource.

[0249] In some embodiments, the above-mentioned first parameter can be indicated by a first value or a second value. For example, the first parameter is a first value, which is used to indicate that the terminal device triggers resource reselection when it detects that the SL continuous LBT triggering on the RB set fails; when the first parameter is a second value, it is used to indicate that the terminal device does not trigger resource reselection when it detects that the SL continuous LBT triggering on the RB set fails.

[0250] In one implementation, the first value may be enable, and the second value may be disable. For example, when the first parameter is enable, it is used to instruct the terminal device to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set; when the first parameter is disable, it is used to instruct the terminal device not to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set.

[0251] In another implementation, the first value may be 1, and the second value may be 0. For example, when the first parameter is 1, it is used to instruct the terminal device to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set; when the first parameter is 0, it is used to instruct the terminal device not to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set.

[0252] In another implementation, the first value may be 0 and the second value may be 1. For example, when the first parameter is 0, it is used to instruct the terminal device to trigger resource reselection upon detecting a failure to trigger SL continuous LBT on the RB set; when the first parameter is 1, it is used to instruct the terminal device not to trigger resource reselection upon detecting a failure to trigger SL continuous LBT on the RB set. Optionally, the first value and the second value may be other values, which are not limited in this disclosure.

[0253] In some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0254] In some embodiments, the terminal device 102 may obtain the parameter through configuration or pre-configuration. Optionally, the terminal device 102 in the RRC connected state may obtain the first parameter through dedicated signaling. In one possible implementation, the terminal device 102 in the RRC connected state may obtain the first parameter from the network device through RRC dedicated signaling.

[0255] In some embodiments, when the terminal device 102 is in the RRC IDLE / INACTIVE state, the terminal device 102 can obtain the above-mentioned first parameter from the network device through the SIB.

[0256] In some embodiments, when the terminal device 102 is in the OOC state, the terminal device 102 can obtain the above-mentioned first parameter through pre-configuration.

[0257] Step S2202: the first parameter is the first value, and the terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, triggering resource reselection.

[0258] In some embodiments, terminal device 102 can detect whether a SL continuous LBT failure has been triggered on an RB set. If the network device sends a first parameter with a first value, and terminal device 102 detects that a SL continuous LBT failure has been triggered on an RB set, terminal device 102 triggers resource reselection. Optionally, terminal device 102 cannot select resources on an RB set that has triggered a SL continuous LBT failure.

[0259] In some embodiments, the first parameter sent by the network device 101 is a first value. If the terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, the terminal device 102 triggers resource reselection.

[0260] In some embodiments, the above-mentioned first parameter sent by the network device 101 is a first value. If the terminal device 102 detects that the SL continuous LBT failure is triggered on the RB set, the terminal device 102 can determine the first resource pool where the RB set that triggered the SL continuous LBT failure is located; if there is no RB set that has not triggered the SL continuous LBT failure on the first resource pool, determine the second resource pool; and perform resource reselection on the second resource pool.

[0261] In one possible implementation, when all RB sets on the selected resource pool trigger SL continuous LBT failure, the terminal device 102 in the RRC connected state and running in mode 2 reselects the resource pool. Even if not all RB sets trigger SL continuous LBT failure, the terminal device 102 in the RRC connected state and running in mode 2 may reselect the resource pool according to the implementation, for example, when the terminal device 102 in the RRC connected state and running in mode 2 detects that there are insufficient resources in the currently selected resource pool.

[0262] In some embodiments, the terminal device 102 may determine the second resource pool from one or more resource pools, wherein the one or more resource pools respectively include at least one RB set that does not trigger SL continuous LBT failure.

[0263] Optionally, when the terminal device 102 in the RRC connected state and operating in mode 2 reselects a resource pool, the terminal device 102 may reselect a resource pool from one or more resource pools having at least one RB set in which no SL continuous LBT failure is detected, according to the implementation.

[0264] In some embodiments, the terminal device 102 may determine one or more of the second resource pools from the multiple resource pools; wherein the multiple resource pools respectively include at least one RB set that does not trigger SL continuous LBT failure.

[0265] Optionally, if there are multiple resource pools each having at least one RB set without detecting SL continuous LBT failure, the terminal device 102 in the RRC connected state and running in mode 2 can select one or more second resource pools from the multiple resource pools according to the implementation.

[0266] Step S2203, the first parameter is the second value, the terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, and does not trigger resource reselection.

[0267] In some embodiments, terminal device 102 can detect whether a continuous SL LBT failure has been triggered on the RB set. If the first parameter sent by the network device is the second value, and terminal device 102 detects that a continuous SL LBT failure has been triggered on the RB set, terminal device 102 does not trigger resource reselection. Optionally, if the first parameter sent by the network device is the second value, and terminal device 102 detects that a continuous SL LBT failure has been triggered on the RB set, the MAC layer of terminal device 102 does not trigger resource reselection.

[0268] In some embodiments, the implementation method of the terminal device 102 detecting whether SL continuous LBT failure is triggered on the RB set can be referred to the relevant description of the above step S2203, which will not be repeated here.

[0269] Step S2204 , the terminal device 102 sends first information to the network device 101 .

[0270] In some embodiments, the network device 101 receives the first information.

[0271] In an embodiment of the present disclosure, the first information includes information of an RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure. In some embodiments, the RB set information may include the identifier of the RB set.

[0272] In some embodiments, the terminal device 102 sends the above-mentioned first information through MACCE (Media Access Control Element).

[0273] In some embodiments, the terminal device 102 sends a MACCE including the first information. Alternatively, the network device 101 receives a MACCE including the first information. The first information may be, for example, but not limited to, an indication of SL continuous LBT failure.

[0274] In some embodiments, the terminal device 102 detects that a continuous SL LBT failure is triggered on an RB set, and the terminal device 102 triggers resource reselection. The terminal device 102 may also send a first message to the network device 101 to report to the network device 101 the information of the RB set on which the continuous SL LBT failure is detected, and at the same time, the terminal device 102 triggers resource reselection. Optionally, the terminal device 102 detects that a continuous SL LBT failure is triggered on an RB set, and the terminal device 102 reports to the network device 101 the information of the RB set on which the continuous SL LBT failure is detected through the first message, and at the same time, the MAC layer of the terminal device 102 triggers resource reselection, for example, the MAC layer submits parameters to the physical layer. The physical layer provides candidate resources based on the parameters. The MAC layer obtains the candidate resources provided by the physical layer and performs resource reselection among the candidate resources.

[0275] In some embodiments, when terminal device 102 detects that a SL continuous LBT failure has been triggered on an RB set, terminal device 102 does not trigger resource reselection. Terminal device 102 may send a first message to network device 101 to report to network device 101 the information about the RB set in which the SL continuous LBT failure has been detected, so that network device 101 can recover from the SL continuous LBT failure based on the first message.

[0276] Step S2205 , the MAC layer of the terminal device 102 delivers the second information to the physical layer of the terminal device 102 .

[0277] In the embodiment of the present disclosure, the second information includes RB set information, and the second information is used for resource exclusion at the physical layer.

[0278] In some embodiments, the terminal device 102 detects that a continuous LBT failure of SL is triggered on an RB set, and the terminal device 102 triggers resource reselection. The MAC layer of the terminal device 102 may also deliver second information to the physical layer of the terminal device 102, and the terminal device 102 triggers resource reselection. Optionally, the terminal device 102 detects that a continuous LBT failure of SL is triggered on an RB set, and the MAC layer triggers resource reselection. The MAC layer delivers the above-mentioned second information and parameters for resource selection / reselection to the physical layer. The physical layer provides candidate resources based on the parameters and the second information, and the candidate resources provided by the physical layer exclude the RB set that triggered the continuous LBT failure of SL. The MAC layer obtains the candidate resources provided by the physical layer, and performs resource reselection among the candidate resources.

[0279] In some embodiments, when the terminal device 102 detects that the SL continuous LBT triggering failure on the RB set, the terminal device 102 does not trigger resource reselection. The terminal device 102 does not notify the physical layer of the information of the RB set in which the SL continuous LBT failure is detected.

[0280] In some embodiments, when terminal device 102 detects that a continuous SL LBT failure has occurred on an RB set, terminal device 102 does not trigger resource reselection. However, the MAC layer of terminal device 102 still notifies the physical layer of the RB set in which the continuous SL LBT failure has been detected. This RB set information can be used during subsequent resource reselection to allow the physical layer to exclude resources associated with the RB set in which the continuous SL LBT failure has been detected.

[0281] Step S2206: The network device 101 recovers the SL continuous LBT failure based on the first information.

[0282] In some embodiments, the network device 101 receives the above-mentioned first information sent by the terminal device 102 and can recover the SL continuous LBT failure. For example, the network device 101 recovers the SL continuous LBT failure of the RB set associated with the first information based on the above-mentioned first information. For example, the network device 101 can send resource reconfiguration signaling to the terminal device 102 based on the above-mentioned first information.

[0283] The method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2206. For example, step S2201 can be implemented as an independent embodiment, step S2202 can be implemented as an independent embodiment, step S2203 can be implemented as an independent embodiment, step S2201+step S2202 can be implemented as an independent embodiment, step S2201+step S2202+step S2204+step S2206 can be implemented as an independent embodiment, step S2201+step S2202+step S2204+step S2205+step S2206 can be implemented as an independent embodiment, step S2201+step S2203 can be implemented as an independent embodiment, step S2201+step S2203+step S2204+step S2206 can be implemented as an independent embodiment, and step S2201+step S2203+step S2205 can be implemented as an independent embodiment, but is not limited to this.

[0284] In some embodiments, step S2104 and step S2105 may be executed in an interchanged order or simultaneously.

[0285] In some embodiments, steps S2103, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0286] In some embodiments, steps S2102, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0287] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2B .

[0288] FIG3A is a flow chart illustrating a method for handling a continuous listen-before-speak (LBT) failure according to an embodiment of the present disclosure. As shown in FIG3A , the method according to an embodiment of the present disclosure may be executed by a communication device, which may be a terminal device 102, wherein the terminal device 102 is in an RRC connected state and the SL transmission resource allocation method of the terminal device 102 is a method in which the terminal device autonomously selects the transmission resource. The above method includes but is not limited to the following steps:

[0289] Step S3101: Detecting failure of triggering SL continuous LBT on RB set, and determining whether to trigger resource reselection.

[0290] In some embodiments, in response to the terminal device 102 detecting a failure to trigger continuous LBT of the SL on the RB set, resource reselection is triggered. Optionally, the terminal device 102 detects a failure to trigger continuous LBT of the SL on the RB set, and the MAC layer of the terminal device 102 triggers resource reselection. For example, the MAC layer of the terminal device 102 submits a set of parameters for resource selection / reselection to the physical layer of the terminal device 102. The physical layer provides candidate resources based on the parameters. The MAC layer obtains the candidate resources provided by the physical layer and performs resource selection / reselection among the candidate resources.

[0291] In some embodiments, in step S3101, the terminal device 102 detects that the triggering of SL continuous LBT on the RB set fails. The optional implementation method of triggering resource reselection can refer to the optional implementation method of step S2102 in Figure 2A and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0292] In some embodiments, the terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, and does not trigger resource reselection. Optionally, the terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, and the MAC layer of the terminal device 102 does not trigger resource reselection.

[0293] Step S3102, sending the first information.

[0294] In an embodiment of the present disclosure, the first information includes information of an RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0295] The optional implementation method of step S3102 can refer to the optional implementation method of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, and can also refer to the optional implementation method of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0296] In some embodiments, the terminal device 101 sends the first information to the network device 101, but is not limited thereto, and the first information may also be sent to other entities.

[0297] Optionally, the first information is used by the network device 101 to recover from a SL continuous LBT failure. For optional implementations, see the optional implementation of step S2105 in FIG. 2A and other related parts of the embodiment involved in FIG. 2A , and see the optional implementation of step S2206 in FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.

[0298] The method involved in the embodiment of the present disclosure may include at least one of steps S3101 and S3102. For example, step S3101 may be implemented as an independent embodiment, and step S3101 + step S3102 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0299] In some embodiments, step S3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0300] FIG3B is a flow chart illustrating a method for handling a continuous listen-before-speak (LBT) failure according to an embodiment of the present disclosure. As shown in FIG3B , the method according to an embodiment of the present disclosure may be performed by a communication device, which may be a terminal device 102, wherein the terminal device 102 is in an RRC connected state and the SL transmission resource allocation method of the terminal device 102 is a method in which the terminal device autonomously selects the transmission resource. The above method includes but is not limited to the following steps:

[0301] Step S3201: It is detected that the sidelink SL continuous LBT triggering fails on the resource block set RB set, and it is determined whether to trigger resource reselection according to the first parameter configured by the network device 101.

[0302] Specifically, in some embodiments, in response to the terminal device detecting that the side link SL continuous LBT triggering on the resource block set RB set fails, the terminal device determines whether to trigger resource reselection according to the first parameter configured by the network device 101.

[0303] In an embodiment of the present disclosure, the first parameter is used to instruct the terminal device 102 to trigger resource reselection when it detects that the SL continuous LBT triggering on the RB set fails.

[0304] Optionally, the terminal device determines that a first parameter configured by the network device is received, triggering resource reselection.

[0305] For optional implementations, please refer to the optional implementations of step S2102 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.

[0306] Optionally, in response to the terminal device determining that the first parameter configured by the network device is not received, resource reselection is not triggered.

[0307] For optional implementations, please refer to the optional implementations of step S2106 in FIG2A and other related parts in the embodiment involved in FIG2A , which will not be described in detail here.

[0308] Step S3202, sending the first information.

[0309] In an embodiment of the present disclosure, the first information includes information of an RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0310] The optional implementation method of step S3202 can refer to the optional implementation method of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, and can also refer to the optional implementation method of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0311] In some embodiments, the terminal device 101 sends the first information to the network device 101, but is not limited thereto, and the first information may also be sent to other entities.

[0312] Optionally, the first information is used by the network device 101 to recover from a SL continuous LBT failure. For optional implementations, see the optional implementation of step S2105 in FIG. 2A and other related parts of the embodiment involved in FIG. 2A , and see the optional implementation of step S2206 in FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.

[0313] The method involved in the embodiments of the present disclosure may include at least one of steps S3201 and S3202. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, and step S3201 + step S3202 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0314] In some embodiments, step S3202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0315] In some embodiments, step S3201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0316] FIG3C is a flow chart illustrating a method for handling a failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure. As shown in FIG3C , the method according to an embodiment of the present disclosure may be executed by a communication device, which may be a terminal device 102, wherein the terminal device 102 is in an RRC connected state and the SL transmission resource allocation method of the terminal device 102 is a method in which the terminal device autonomously selects the transmission resource. The above method includes but is not limited to the following steps:

[0317] Step S3301: It is detected that the sidelink SL continuous LBT triggering fails on the resource block set RB set, and it is determined whether to trigger resource reselection according to a first parameter configured by the network device.

[0318] In some embodiments, the network device 101 sends the first parameter to the terminal device 102. Optionally, the terminal device 102 receives the first parameter sent by the network device 101.

[0319] In some embodiments, the first parameter is used to indicate whether the terminal device 102 triggers resource reselection when detecting a failure to trigger SL continuous LBT on the RB set. The first parameter may have other names, which are not specifically limited in this disclosure.

[0320] In an embodiment of the present disclosure, the terminal device 102 is in an RRC connected state, and the SL sending resource allocation method of the terminal device 102 is a method in which the terminal device independently selects the sending resource.

[0321] In some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0322] In some embodiments, the terminal device 102 may obtain the parameter through configuration or pre-configuration. Optionally, the terminal device 102 in the RRC connected state may obtain the first parameter through dedicated signaling. In one possible implementation, the terminal device 102 in the RRC connected state may obtain the first parameter from the network device through RRC dedicated signaling.

[0323] In some embodiments, when the terminal device 102 is in the RRC IDLE / INACTIVE state, the terminal device 102 can obtain the above-mentioned first parameter from the network device through the SIB.

[0324] In some embodiments, when the terminal device 102 is in the OOC state, the terminal device 102 can obtain the above-mentioned first parameter through pre-configuration.

[0325] In some embodiments, the above-mentioned first parameter can be indicated by a first value or a second value. For example, the first parameter is a first value, which is used to indicate that the terminal device triggers resource reselection when it detects that the SL continuous LBT triggering on the RB set fails; when the first parameter is a second value, it is used to indicate that the terminal device does not trigger resource reselection when it detects that the SL continuous LBT triggering on the RB set fails.

[0326] In one implementation, the first value may be enable, and the second value may be disable. For example, when the first parameter is enable, it is used to instruct the terminal device to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set; when the first parameter is disable, it is used to instruct the terminal device not to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set.

[0327] In another implementation, the first value may be 1, and the second value may be 0. For example, when the first parameter is 1, it is used to instruct the terminal device to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set; when the first parameter is 0, it is used to instruct the terminal device not to trigger resource reselection upon detecting a failure in triggering SL continuous LBT on the RB set.

[0328] In another implementation, the first value may be 0 and the second value may be 1. For example, when the first parameter is 0, it is used to instruct the terminal device to trigger resource reselection upon detecting a failure to trigger SL continuous LBT on the RB set; when the first parameter is 1, it is used to instruct the terminal device not to trigger resource reselection upon detecting a failure to trigger SL continuous LBT on the RB set. Optionally, the first value and the second value may be other values, which are not limited in this disclosure.

[0329] In some embodiments, the first parameter is the first value, and the terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, and the terminal device 102 triggers resource reselection. Optional implementations thereof can be found in the optional implementations of step S2202 of FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.

[0330] In some embodiments, the first parameter is the second value, and a failure to trigger continuous LBT of SL on the RB set is detected, and resource reselection is not triggered. The optional implementation method thereof can be referred to the optional implementation method of step S2203 of FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be repeated here.

[0331] Step S3302, sending the first information.

[0332] In an embodiment of the present disclosure, the first information includes information of an RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0333] The optional implementation method of step S3302 can refer to the optional implementation method of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, and can also refer to the optional implementation method of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0334] In some embodiments, the terminal device 101 sends the first information to the network device 101, but is not limited thereto, and the first information may also be sent to other entities.

[0335] Optionally, the first information is used by the network device 101 to recover from a SL continuous LBT failure. For optional implementations, see the optional implementation of step S2105 in FIG. 2A and other related parts of the embodiment involved in FIG. 2A , and see the optional implementation of step S2206 in FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.

[0336] The method involved in the embodiment of the present disclosure may include at least one of step S3301 and step S3302. For example, step S3301 and step S3302 may be implemented as independent embodiments, and step S3301 may be implemented as an independent embodiment, but is not limited thereto.

[0337] In some embodiments, step S3302 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0338] FIG4A is a flow chart illustrating a method for handling failures of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure. As shown in FIG4A , the method according to an embodiment of the present disclosure can be applied to a communication device. In one implementation, the communication device can be a network device 101. The method includes but is not limited to the following steps:

[0339] Step S4101, sending the first parameter.

[0340] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0341] In some embodiments, the network device 101 sends the above-mentioned first parameter to the terminal device 102, where the above-mentioned first parameter is used to instruct the terminal device to trigger resource reselection when detecting that a failure to trigger continuous LBT of the side link SL on the resource block set RB set is detected.

[0342] In some embodiments, the first parameter is used by the terminal device 102 to detect that the SL continuous LBT triggering on the RB set has failed, triggering resource reselection. For optional implementations, see the optional implementations of steps S2102 and S2106 in FIG. 2A , as well as other related portions of the embodiment involved in FIG. 2A , which will not be described in detail here.

[0343] In some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0344] Step S4102, receiving first information.

[0345] The optional implementation of step S4102 can refer to the optional implementation of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0346] In some embodiments, the network device 101 receives the first information sent by the terminal device 102, where the first information includes RB set information, and the first information is used to indicate the RB set that triggers SL continuous LBT failure.

[0347] In some embodiments, the network device 101 receives the first information sent by the terminal device 102 via MAC E.

[0348] In some embodiments, the first information is used by the network device 101 to recover from SL continuous LBT failure.

[0349] Step S4103: recover from SL continuous LBT failure.

[0350] In some embodiments, the recovery of the SL continuous LBT failure is performed by the network device 101 based on the first information. Optional implementations thereof can be found in the optional implementation of step S2105 of FIG. 2A and other related parts of the embodiment involved in FIG.

[0351] The method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4103. For example, step S4101 can be implemented as an independent embodiment, step S4102 can be implemented as an independent embodiment, step S4102 + step S4103 can be implemented as independent embodiments, step S4101 + step S4102 can be implemented as independent embodiments, and step S4101 + step S4102 + step S4103 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0352] In some embodiments, step S4102 and step S4103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0353] In some embodiments, step S4101 and step S4103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0354] In some embodiments, step S4101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0355] In some embodiments, step S4103 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0356] FIG4B is a flow chart illustrating a method for handling failures of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure. As shown in FIG4B , the method according to an embodiment of the present disclosure can be applied to a communication device. In one implementation, the communication device can be a network device 101. The method includes but is not limited to the following steps:

[0357] Step S4201, sending the first parameter.

[0358] The optional implementation of step S4201 can refer to the optional implementation of step S2201 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0359] In some embodiments, the network device 101 sends a first parameter to the terminal device 102. Optionally, the terminal device 102 receives the first parameter, which is used to indicate whether the terminal device 102 triggers resource reselection when detecting a failure to trigger continuous LBT of SL on an RB set.

[0360] In some embodiments, the first parameter is a first value, and the first parameter is used to instruct the terminal device 102 to trigger resource reselection upon detecting a failure to trigger SL continuous LBT on the RB set. The optional implementation method can be found in the optional implementation method of step S2202 of Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0361] In some embodiments, the first parameter is the second value, and the first parameter is used to instruct the terminal device 102 not to trigger resource reselection when detecting a failure to trigger SL continuous LBT on the RB set. For optional implementations, see the optional implementation of step S2203 in FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.

[0362] In some embodiments, the first parameter is a configuration parameter of terminal device granularity.

[0363] Step S4202, receiving first information.

[0364] The optional implementation of step S4202 can refer to the optional implementation of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0365] In some embodiments, the network device 101 receives the first information sent by the terminal device 102, where the first information includes information of the RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure.

[0366] In some embodiments, the network device 101 receives the first information sent by the terminal device 102 via MAC E.

[0367] In some embodiments, the first information is used by the network device 101 to recover from SL continuous LBT failure.

[0368] Step S4203: recover from SL continuous LBT failure.

[0369] In some embodiments, the recovery of the SL continuous LBT failure is performed by the network device 101 based on the first information. Optional implementations thereof can be found in the optional implementation of step S2306 of FIG. 2B and other related parts of the embodiment involved in FIG.

[0370] The method involved in the embodiments of the present disclosure may include at least one of steps S4201 to S4203. For example, step S4201 can be implemented as an independent embodiment, step S4202 can be implemented as an independent embodiment, step S4202 + step S4203 can be implemented as independent embodiments, step S4201 + step S4202 can be implemented as independent embodiments, and step S4201 + step S4202 + step S4203 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0371] In some embodiments, step S4202 and step S4203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0372] In some embodiments, step S4201 and step S4203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0373] In some embodiments, step S4201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0374] In some embodiments, step S4203 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0375] FIG5A is an interactive diagram illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure. As shown in FIG5A , the method according to the embodiment of the present disclosure can be applied to a communication system 100, and the method includes but is not limited to the following steps.

[0376] In step S5101, the network device 101 sends a first parameter to the terminal device 102. The first parameter is used to instruct the terminal device to trigger resource reselection when it detects that a failure to trigger SL continuous LBT on an RB set is detected.

[0377] Optional implementations of step S5101 can be found in step S2101 of FIG. 2A , optional implementations of step S4101 of FIG. 4A , and other related parts of the embodiments involved in FIG. 2A and FIG. 4A , which will not be described in detail here.

[0378] Step S5102: The terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, and triggers resource reselection.

[0379] The optional implementation of step S5102 can refer to the optional implementation of step S2102 in Figure 2A, step S3201 in Figure 3B, and other related parts in the embodiments involved in Figures 2A and 3B, which will not be repeated here.

[0380] FIG5B is an interactive diagram illustrating a method for handling failure of continuous listen-before-speak (LBT) according to an embodiment of the present disclosure. As shown in FIG5B , the method according to the embodiment of the present disclosure can be applied to the communication system 100, and the method includes but is not limited to the following steps.

[0381] In step S5201, the network device 101 sends a first parameter to the terminal device 102. The first parameter is used to indicate whether the terminal device 102 triggers resource reselection when detecting that a continuous LBT failure of the side link SL is triggered on the resource block set RB set.

[0382] The optional implementation of step S5201 can refer to the optional implementation of step S2201 in Figure 2B, step S4201 in Figure 4B, and other related parts in the embodiments involved in Figures 2B and 4B, which will not be repeated here.

[0383] Step S5202: The terminal device 102 detects that the SL continuous LBT triggering on the RB set fails, and determines whether to trigger resource reselection according to the above-mentioned first parameter.

[0384] The optional implementation of step S5202 can refer to the optional implementation of steps S2202 and S2203 in Figure 2B, step S3301 in Figure 3C, and other related parts in the embodiments involved in Figures 2B and 3C, which will not be repeated here.

[0385] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal device in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0386] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be implemented by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits, or in part by software called by the processor, and the rest by hardware circuits.

[0387] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0388] Figure 6A is a structural diagram of a terminal device proposed in an embodiment of the present disclosure. As shown in Figure 6A, the terminal device 6100 may include: at least one of a transceiver module 6101, a processing module 6102, etc. In some embodiments, the processing module is used to detect that the SL continuous LBT triggering on the RB set fails, and determines whether to trigger resource reselection; wherein, the terminal device 102 is in a radio resource control RRC connection state, and the allocation method of the SL transmission resource of the terminal device 102 is a method in which the first communication device autonomously selects the transmission resource. Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2103, but not limited to this) executed by the terminal device 102 in any of the above methods, which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S2102, step S2106, but not limited to this) executed by the terminal device 102 in any of the above methods, which will not be repeated here.

[0389] Figure 6B is a structural diagram of the network device proposed in an embodiment of the present disclosure. As shown in Figure 6B, the network device 6200 may include: at least one of a transceiver module 6201, a processing module 6202, etc. In some embodiments, the above-mentioned transceiver module is used to send a first parameter to the terminal device, and the first parameter is used to instruct the terminal device 102 to trigger resource reselection when it detects that the SL continuous first LBT fails to be triggered on the RB set. Optionally, the above-mentioned transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2101, step S2103, but not limited to this) performed by the network device 101 in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module is used to execute at least one of the other steps (for example, step S2105, but not limited to this) performed by the network device 101 in any of the above methods, which will not be repeated here.

[0390] Figure 6C is a structural diagram of a network device proposed in an embodiment of the present disclosure. As shown in Figure 6C, the network device 6300 may include: at least one of a transceiver module 6301, a processing module 6302, etc. In some embodiments, the above-mentioned transceiver module is used to send a first parameter to the terminal device 102, and the first parameter is used to indicate whether the terminal device 102 triggers resource reselection when it detects that the side link SL continuous listen-before-talk LBT fails to be triggered on the resource block set RB set. Optionally, the above-mentioned transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2201, step S2204, but not limited to this) performed by the network device 101 in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module is used to execute at least one of the other steps (for example, step S2206, but not limited to this) performed by the network device 101 in any of the above methods, which will not be repeated here.

[0391] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0392] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0393] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), or a terminal device (e.g., a user device, etc.). It can also be a chip, chip system, or processor that supports a network device to implement any of the above methods, or a chip, chip system, or processor that supports a terminal device to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0394] As shown in FIG7A , the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 7100 is used to perform any of the above methods.

[0395] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0396] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2103, step S2103, step S2201, step S2204, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2102, step S2105, step S2106, step S2206, but not limited thereto).

[0397] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0398] In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102. The interface circuit 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0399] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0400] 7B is a schematic diagram of the structure of a chip 7200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0401] The chip 7200 includes one or more processors 7201 , and the chip 7200 is configured to execute any of the above methods.

[0402] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to the memory 7203. The interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0403] In some embodiments, the interface circuit 7202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2103, step S2103, step S2201, step S2204, but not limited to these), and the processor 7201 executes at least one of the other steps (for example, step S2102, step S2105, step S2106, step S2206, but not limited to these).

[0404] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0405] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0406] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0407] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0408] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0409] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0410] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0411] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0412] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for handling failure of continuous listening before speaking LBT, characterized in that: The method is performed by a terminal device, and the method includes: In response to detecting that a sidelink SL continuous LBT triggering fails on a resource block set RB set, determining whether to trigger resource reselection; The terminal device is in a radio resource control RRC connection state, and the SL transmission resource allocation method of the terminal device is a method in which the terminal device autonomously selects the transmission resource.

2. The method according to claim 1, characterized in that The determining whether to trigger resource reselection in response to detecting that the side link SL continuous LBT fails to be triggered on the resource block set RB set includes: In response to detecting that continuous LBT failure of SL is triggered on RB set, resource reselection is triggered.

3. The method according to claim 2, characterized in that The triggering of resource reselection includes: Determine a first resource pool where the RB set that triggers the SL continuous LBT failure is located; Determining a second resource pool when there is no specific number of RB sets on the first resource pool that do not trigger the SL continuous LBT failure; Resource reselection is performed on the second resource pool.

4. The method according to claim 3, characterized in that The determining of the second resource pool includes: The second resource pool is determined in one or more resource pools, wherein the one or more resource pools respectively include at least one RB set that does not trigger the SL continuous LBT failure.

5. The method according to claim 4, characterized in that The determining the second resource pool from one or more resource pools includes: One or more of the second resource pools are determined from the plurality of resource pools.

6. The method according to claim 1, characterized in that The determining whether to trigger resource reselection in response to detecting that the side link SL continuous LBT fails to be triggered on the resource block set RB set includes: In response to detecting failure of triggering SL continuous LBT on RB set, resource reselection is not triggered.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises at least one of the following: Sending first information to a network device, where the first information includes information about the RB set, and the first information is used to indicate the RB set that triggers the SL continuous LBT failure; The media access control MAC layer of the terminal device delivers second information to the physical layer of the terminal device, where the second information includes information of the RB set, and the second information is used for the physical layer to perform resource exclusion.

8. The method according to claim 7, characterized in that The sending of the first information to the network device comprises: The first information is sent through a medium access control MAC control element CE.

9. The method according to claim 1, characterized in that The determining whether to trigger resource reselection includes: Determine whether to trigger resource reselection according to a first parameter configured by the network device.

10. The method according to claim 9, characterized in that The determining whether to trigger resource reselection according to the first parameter configured by the network device includes: In response to determining that the first parameter configured by the network device is received, triggering resource reselection; In response to determining that the first parameter configured by the network device is not received, resource reselection is not triggered.

11. The method according to claim 9, characterized in that The determining whether to trigger resource reselection according to the first parameter configured by the network device includes at least one of the following: When the first parameter configured by the network device is a first value, triggering resource reselection; When the first parameter configured by the network device is a second value, resource reselection is not triggered.

12. The method according to any one of claims 9 to 11, characterized in that The first parameter is a configuration parameter of the terminal device granularity.

13. A method for handling failure of continuous listening before speaking LBT, characterized in that: The method is performed by a network device, and the method includes: A first parameter is sent to a terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when it is detected that a continuous LBT failure of the side link SL is triggered on a resource block set RB set.

14. The method according to claim 13, characterized in that The method further comprises: Receive first information sent by the terminal device, where the first information includes information of the RB set, and the first information is used to indicate the RB set that triggers the continuous LBT failure of the SL.

15. The method according to claim 14, characterized in that The method further comprises: Based on the first information, the SL continuous LBT failure is recovered.

16. The method according to claim 14, characterized in that The receiving the first information sent by the terminal device includes: The first information sent by the terminal device is received through the media access control MAC control unit CE.

17. The method according to any one of claims 13 to 16, wherein the first parameter is a configuration parameter of terminal device granularity.

18. A method for handling failure of continuous listening before speaking LBT, characterized in that: The method is performed by a network device, and the method includes: A first parameter is sent to a terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that a continuous LBT failure of the side link SL is triggered on a resource block set RB set.

19. The method according to claim 18, characterized in that The first parameter is a first value, and the first parameter is used to instruct the terminal device to trigger resource reselection when detecting that the SL continuous LBT triggering on the RB set fails; The first parameter is a second value, and the first parameter is used to instruct the terminal device not to trigger resource reselection when detecting that SL continuous LBT fails to be triggered on the RB set.

20. The method according to claim 18 or 19, characterized in that The method further comprises: Receive first information sent by the terminal device, where the first information includes information of the RB set, and the first information is used to indicate the RB set that triggers the continuous LBT failure of the SL.

21. The method of claim 20, wherein: The method further comprises: Based on the first information, the SL continuous LBT failure is recovered.

22. The method of claim 20, wherein: The receiving the first information sent by the terminal device includes: The first information sent by the terminal device is received through the media access control MAC control unit CE.

23. The method according to any one of claims 18 to 22, characterized in that The first parameter is a configuration parameter of the terminal device granularity.

24. A method for handling failure of continuous listening before speaking LBT, characterized in that: include: The network device sends a first parameter to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when detecting that a continuous LBT failure of the side link SL is triggered on the resource block set RB set; The terminal device detects that the SL continuous LBT triggering on the RB set fails, and triggers resource reselection.

25. A method for handling failure of continuous listening before speaking LBT, characterized in that: include: The network device sends a first parameter to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when detecting that a continuous LBT failure of the side link SL is triggered on the resource block set RB set; The terminal device detects that triggering SL continuous LBT on RB set fails, and determines whether to trigger resource reselection according to the first parameter.

26. A first communication device, characterized in that: include: A processing module, configured to detect that a continuous listen-before-talk LBT of a side link SL is triggered on a resource block set RB set and determine whether to trigger resource reselection; The first communication device is in a radio resource control RRC connection state, and the allocation method of the SL sending resources of the first communication device is a method in which the first communication device independently selects the sending resources.

27. A second communication device, characterized in that: include: The transceiver module is used to send a first parameter to the terminal device, where the first parameter is used to instruct the terminal device to trigger resource reselection when it detects that the side link SL continuous listen-before-talk LBT fails to be triggered on the resource block set RB set.

28. A third communication device, characterized in that: include: The transceiver module is used to send a first parameter to the terminal device, where the first parameter is used to indicate whether the terminal device triggers resource reselection when it detects that the side link SL continuous listen-before-talk LBT fails to be triggered on the resource block set RB set.

29. A communication system, characterized in that: include: The terminal device is configured to execute the continuous listen-before-speak (LBT) failure processing method according to any one of claims 1 to 12; A network device is configured to execute the continuous listen-before-talk (LBT) failure processing method as described in any one of claims 13 to 23.

30. A communication device, characterized in that: include: one or more processors; The processor is used to call instructions to enable the communication device to execute the continuous listen-before-speak (LBT) failure processing method described in any one of claims 1 to 12, 13 to 17, and 18 to 23.

31. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the continuous listen-before-speak (LBT) failure processing method according to any one of claims 1 to 12, 13 to 17, and 18 to 23.

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