A method and apparatus for handling continuous listen-before-speak LBT failures

Abstract

The method comprises the following steps: determining that a sidelink (SL) continuous listen before talk (LBT) failure occurs on a physical resource; receiving first information sent by a network side device; and determining whether the terminal device uses a resource on the physical resource to receive and / or send SL data according to the first information. Through the implementation of the embodiments of the present disclosure, when the terminal device has a SL continuous LBT failure on the physical resource, the terminal device determines whether to use the resource on the physical resource to receive and / or send SL data based on the determined first information. Therefore, the terminal device can recover the SL communication on the physical resource in time, so as to improve the communication efficiency of the terminal device in the SL communication and avoid waste of communication resources.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method and apparatus for handling continuous listen-before-speak (LBT) failures. Background Technology

[0002] In related technologies, when a terminal device autonomously selects communication resources from the network configuration or pre-configured resource pool for sidelink communication, if a series of listen before talk (LBT) failures occur, the terminal device cannot report the series of LBT failures to the network-side device, and therefore cannot determine whether the communication resources that have experienced series of LBT failures have been restored for use. Summary of the Invention

[0003] This disclosure provides a method and apparatus for handling consecutive Listen-Before-Speak (LBT) failures, which can be applied to vehicle networks, such as vehicle-to-everything (V2X) communication, long-term evolution-vehicle (LTE-V) communication, and vehicle-to-vehicle (V2V) communication, or used in fields such as intelligent driving and intelligent connected vehicles. The terminal can determine, based on certain information, whether to resume using the physical resources for receiving and / or sending sidelink (SL) data when consecutive Listen-Before-Speak (LBT) failures occur, thereby improving the communication efficiency of the terminal device in SL communication and avoiding waste of communication resources.

[0004] In a first aspect, embodiments of this disclosure provide a method for handling continuous Listen-Before-Speak (LBT) failures, the method being executed by a terminal device, the method comprising: determining that continuous LBT failures of the side-link SL have occurred on physical resources; receiving first information sent by a network-side device; and determining, based on the first information, whether the terminal device should resume using the resources on the physical resources to receive and / or send SL data.

[0005] In this technical solution, when a terminal device experiences consecutive LBT failures on physical resources, it determines, based on predetermined first information, whether to resume using the physical resources to receive and / or transmit SL data. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of SL communication and avoiding waste of communication resources.

[0006] In one implementation, the first information includes a timer configured by the network-side device. Determining whether the terminal device should resume using the physical resources to receive and / or send SL data based on the first information includes: determining the timer based on the first information; starting the timer; determining that the terminal device should resume using the physical resources to receive and / or send SL data when the timer expires; or, during the timer's operation, determining that the terminal device should not resume using the physical resources to receive and / or send SL data.

[0007] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0008] Optionally, the timer is configured according to a specified granularity, wherein the specified granularity is any one of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0009] Optionally, the method further includes: determining that the timer has timed out; and determining that the physical resource has cancelled the continuous LBT failure state.

[0010] Optionally, starting the timer includes: determining that the physical resource has experienced consecutive LBT failures (SL), and starting the timer associated with the physical resource.

[0011] In this technical solution, when a terminal device experiences consecutive LBT failures on physical resources, it determines whether to resume using the physical resources to receive and / or transmit SL data based on a timer configured on the network-side equipment. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of SL communication by the terminal device.

[0012] In one implementation, the first information includes measurement configuration information. The step of determining whether the terminal device has resumed using the resources on the physical resource to receive and / or send SL data based on the first information includes: performing measurements based on the measurement configuration information to determine the measurement results associated with the physical resource; and determining whether the terminal device has resumed using the resources on the physical resource to receive and / or send SL data based on the measurement results.

[0013] Optionally, determining whether the terminal device should resume using the resources on the physical resources to receive and / or transmit SL data based on the measurement result includes: determining that the terminal device should resume using the resources on the physical resources to receive and / or transmit SL data if the measurement result is less than or equal to a preset threshold; or determining that the terminal device should not resume using the resources on the physical resources to receive and / or transmit SL data if the measurement result is greater than or equal to the preset threshold.

[0014] Optionally, the measurement includes at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy (CO) measurement; Channel Busyness Rate (CBR) measurement.

[0015] In one implementation, the allocation method of the downlink transmission resources on the terminal device side is to autonomously select the downlink transmission resources, wherein the terminal device is in any of the following states: Radio Resource Control (RRC) connected state; RRC idle state; RRC inactive state; or out of coverage state.

[0016] In this technical solution, when a terminal device experiences consecutive LBT failures on physical resources, it determines whether to resume using the physical resources to receive and / or transmit SL data based on measurement configuration information. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of SL communication by the terminal device.

[0017] Secondly, this disclosure provides another method for handling continuous listen-before-speak (LBT) failures. The method is executed by a network-side device and includes: sending first information to a terminal device, wherein the first information is used to instruct the terminal device to determine whether to resume using the resources on the physical resource to receive and / or send SL data when the terminal device determines that a continuous listen-before-speak (LBT) failure has occurred on the side link SL on the physical resource.

[0018] In this technical solution, the network-side device sends first information to the terminal device so that when the terminal device experiences consecutive LBT failures on physical resources, it can determine whether to resume using the physical resources to receive and / or transmit SL data based on the first information. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of SL communication and avoiding waste of communication resources.

[0019] In one implementation, the first information includes a timer, which is used to indicate whether the terminal device resumes using resources on the physical resources to receive and / or send SL data.

[0020] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0021] Optionally, the timer is configured according to a specified granularity, wherein the specified granularity includes any of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0022] In one implementation, the first information includes measurement configuration information, which is used by the terminal device to perform measurements and determine the measurement results associated with the physical resource. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resource to receive and / or send SL data.

[0023] In one alternative implementation, the measurement includes at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy Rate (CO) measurement; Channel Busy Rate (CBR) measurement.

[0024] Thirdly, embodiments of this disclosure provide a terminal device, including: a processing module, configured to determine that a side link SL continuous LBT failure has occurred on physical resources; a transceiver module, configured to receive the first information sent by a network-side device; the processing module is further configured to determine, based on the first information, whether the terminal device should resume using the resources on the physical resources to receive and / or send SL data.

[0025] In one implementation, the first information includes a timer configured by the network-side device, and the processing module is specifically configured to: determine the timer based on the first information; start the timer; when the timer expires, determine that the terminal device resumes using the resources on the physical resources to receive and / or send SL data; or, during the operation of the timer, determine that the terminal device does not resume using the resources on the physical resources to receive and / or send SL data.

[0026] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0027] Optionally, the timer is configured according to a specified granularity, wherein the specified granularity is any one of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0028] Optionally, the processing module is further configured to: determine that the timer has timed out; and determine that the physical resource has cancelled the continuous LBT failure state.

[0029] Optionally, the processing module is specifically used to: determine that the physical resource has experienced consecutive LBT failures (SL), and start the timer associated with the physical resource.

[0030] In one implementation, the first information includes measurement configuration information, and the processing module is specifically used to: perform measurements according to the measurement configuration information to determine the measurement results associated with the physical resource; and determine, based on the measurement results, whether the terminal device should resume using the resources on the physical resource to receive and / or send SL data.

[0031] Optionally, the processing module is specifically configured to: determine that the measurement result is less than or equal to a preset threshold, and determine that the terminal device resumes using the resources on the physical resources to receive and / or send SL data; or, determine that the measurement result is greater than or equal to the preset threshold, and determine that the terminal device does not resume using the resources on the physical resources to receive and / or send SL data.

[0032] Optionally, the measurement includes at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy (CO) measurement; Channel Busyness Rate (CBR) measurement.

[0033] In one implementation, the allocation method of the downlink transmission resources on the terminal device side is to autonomously select the downlink transmission resources, wherein the terminal device is in any of the following states: Radio Resource Control (RRC) connected state; RRC idle state; RRC inactive state; or out of coverage state.

[0034] Fourthly, this disclosure provides a network-side device, including: a transceiver module, configured to send first information to a terminal device, the first information being configured to instruct the terminal device to determine whether to resume using the resources on the physical resource to receive and / or send SL data when the terminal device determines that a continuous listen-before-tell (LBT) failure occurs on the side link SL on the physical resource.

[0035] In one implementation, the first information includes a timer, which is used to indicate whether the terminal device resumes using resources on the physical resources to receive and / or send SL data.

[0036] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0037] Optionally, the timer is configured according to a specified granularity, wherein the specified granularity includes any of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0038] In one implementation, the first information includes measurement configuration information, which is used by the terminal device to perform measurements and determine the measurement results associated with the physical resource. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resource to receive and / or send SL data.

[0039] In one alternative implementation, the measurement includes at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy Rate (CO) measurement; Channel Busy Rate (CBR) measurement.

[0040] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0041] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0042] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0043] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the second aspect above.

[0044] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0045] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0046] Eleventhly, embodiments of this disclosure provide a processing system for continuous listening-before-speaking failures. The system includes the terminal device described in the third aspect and the network-side device described in the fourth aspect; or, the system includes the communication device described in the fifth aspect and the communication device described in the sixth aspect; or, the system includes the communication device described in the seventh aspect and the communication device described in the eighth aspect; or, the system includes the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0047] In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the aforementioned terminal device, which, when executed, cause the terminal device to perform the method described in the first aspect.

[0048] In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions for use by the network-side device, which, when executed, cause the network-side device to perform the method described in the second aspect.

[0049] In a fourteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0050] In a fifteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0051] In a sixteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a terminal device in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal device. The chip system may be composed of chips or may include chips and other discrete devices.

[0052] In a seventeenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network-side devices in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the network-side device. The chip system may be composed of chips or may include chips and other discrete devices.

[0053] In an eighteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0054] In a nineteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0056] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0057] Figure 2 This is a flowchart illustrating a method for handling continuous listen-before-speak LBT failures provided in an embodiment of this disclosure;

[0058] Figure 3 This is a flowchart illustrating another method for handling continuous listen-before-speak LBT failures provided in this embodiment of the disclosure;

[0059] Figure 4 This is a flowchart illustrating another method for handling continuous listen-before-speak LBT failures provided in this embodiment of the disclosure;

[0060] Figure 5 This is a flowchart illustrating another method for handling continuous listen-before-speak LBT failures provided in this embodiment of the disclosure;

[0061] Figure 6 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;

[0062] Figure 7 This is a schematic diagram of another communication device provided in an embodiment of this disclosure;

[0063] Figure 8 This is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0064] The embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure. In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B means A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating the existence of three relationships, for example, A and / or B, indicating: A alone, A and B simultaneously, and B alone.

[0065] It should be noted that the method provided in any embodiment of this disclosure may be executed alone, or may be executed together with possible implementation methods in other embodiments, or may be executed together with any technical solution in the related art.

[0066] To facilitate understanding, the terminology used in this disclosure will be introduced first.

[0067] 1. LBT (Listen before talk)

[0068] In NR-U (new-radio in unlicensed spectrum), when a terminal device accesses an uplink or downlink channel, it must first perform a Level-Based Test (LBT). This means the terminal device must first detect the communication channel to determine if it is busy. If the channel is detected as busy, the LBT fails, and the device must wait for a period of time before attempting the LBT again.

[0069] 2. Consistent LBT failure

[0070] If a terminal device detects a busy channel during LBT (Live-Band Bypass) operation, it determines that the LBT has failed. The terminal device counts the number of LBT failures on the physical resources used for SL (Single-Side Communication). The network-side device configures a maximum number of consecutive LBT failures and a consecutive LBT failure detection timer for the terminal device. The terminal device maintains an LBT_counter variable for each cell, with an initial value of 0. For each active cell configured as described above, when the terminal device receives an LBT failure indication from the physical layer, it increments LBT_counter by 1. When LBT_counter is greater than or equal to the maximum number of consecutive LBT failures, a consecutive LBT failure is determined. When the consecutive LBT failure detection timer expires, the terminal device resets LBT_counter to 0 and restarts the counting. To better understand the method for handling consecutive listen-before-speak failures disclosed in this embodiment, the communication system to which this embodiment applies is described below.

[0071] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, a network-side device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, there may be two or more network-side devices and two or more terminal devices. Figure 1 The communication system shown is exemplified by a network-side device 101 and a terminal device 102.

[0072] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0073] The network-side device 101 in this embodiment is a network-side entity used for transmitting or receiving signals. For example, the network-side device 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network-side device. The network-side device provided in this disclosure can be composed of a centralized unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure, the protocol layer of the network-side device, such as a base station, can be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0074] The terminal device 102 in this disclosure is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in 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, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. This disclosure does not limit the specific technology or device form used in the terminal device.

[0075] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0076] The following description, in conjunction with the accompanying drawings, details the method and apparatus for handling continuous listening-before-speaking failures provided in this disclosure.

[0077] Please see Figure 2 , Figure 2 This is a flowchart illustrating a method for handling continuous listen-before-speak (LBT) failures according to an embodiment of this disclosure. This method is applied to a terminal device. Figure 2 As shown, the method may include, but is not limited to, the following steps:

[0078] Step S201: Determine that a continuous LBT failure has occurred on the physical resources.

[0079] For example, the network-side device configures a maximum number of consecutive LBT failures and a consecutive LBT failure detection timer for the terminal device. At the same time, the terminal device maintains a consecutive LBT failure counter with an initial count value of 0. When the count value of the consecutive LBT failure counter is greater than or equal to the maximum number of consecutive LBT failures and the consecutive LBT failure detection timer has not expired, it is determined that a consecutive LBT failure has occurred on the physical resource.

[0080] In the embodiments of this disclosure, physical resources refer to the communication resources required by the terminal device for SL communication.

[0081] Step S202: Receive the first information sent by the network-side device.

[0082] For example, the terminal device receives the first information sent by the network-side device.

[0083] Step S203: Based on the first information, determine whether the terminal device has resumed using physical resources to receive and / or send SL data.

[0084] In the embodiments of this disclosure, the resources on the physical resources mentioned above are SL resources.

[0085] For example, multiple different handling methods for consecutive LBT failures are pre-configured. Each different handling method depends on different first information for processing. The terminal device determines the consecutive LBT failure handling method to be executed based on the determined first information, and then determines whether to resume using physical resources to receive and / or send SL data.

[0086] As an example, the terminal device determines whether it should use physical resources to receive SL data based on the first information.

[0087] As another example, the terminal device determines whether it should use physical resources to send SL data based on the first information.

[0088] As another example, the terminal device determines, based on the first information, whether it uses physical resources to receive and send SL data.

[0089] In some embodiments of this disclosure, if a terminal device determines that it will use a physical resource to receive and / or transmit SL data, then the terminal device will select that physical resource when selecting or reselecting the resource.

[0090] In the embodiments of this disclosure, SL data includes at least one of the following: PSSCH (physical sidelink shared channel), PSCCH (physical sidelink control channel), PSFCH (physical sidelink feedback channel), and SSB (synchronization signal block).

[0091] By implementing the embodiments of this disclosure, when a terminal device experiences consecutive LBT failures on physical resources, it determines, based on determined first information, whether it should use the physical resources to receive and / or send SL data. This ensures that the terminal device can promptly restore SL communication on physical resources, thereby improving the communication efficiency of SL communication and avoiding waste of communication resources.

[0092] In some embodiments of this disclosure, the allocation method of the downlink transmission resources on the terminal device side is to autonomously select the downlink transmission resources, wherein the terminal device is in any of the following states: RRC (Radio Resource Control) connected state; RRC idle state; RRC inactive state; or out of coverage state.

[0093] In one implementation, the terminal device receives first information including a timer from the network-side device, and then determines, based on the timer, whether to use physical resources to receive and / or transmit SL data. As an example, please refer to [link to example]. Figure 3 , Figure 3 This is a flowchart illustrating another method for handling continuous listen-before-speak (LBT) failures provided in this disclosure. This method is applied to a terminal device. Figure 3 As shown, the method may include, but is not limited to, the following steps:

[0094] Step S301: Determine that a continuous LBT failure has occurred on the physical resources.

[0095] In the embodiments of this disclosure, step S301 can be implemented in any of the ways described in the various embodiments of this disclosure. This disclosure does not limit this and will not elaborate further.

[0096] In the embodiments of this disclosure, the physical resources mentioned above include any one of the following: BWP (bandwidth part); resource pool; resource block set.

[0097] In the embodiments of this disclosure, the resource pool refers to a physical resource pool composed of physical resources that can be used for SL communication.

[0098] Step S302: Receive first information sent by the network-side device, the first information including a timer configured by the network-side device.

[0099] For example, the terminal device receives first information sent by the network-side device, which includes a timer configured by the network-side device. This timer indicates whether the terminal device can resume using the physical resources to receive and / or transmit SL data after a series of consecutive LBT failures of the physical resource.

[0100] In the embodiments of this disclosure, the timer is configured according to a specified granularity, wherein the specified granularity is any one of the following: BWP granularity; resource pool granularity; resource block set (RB set) granularity; terminal device granularity.

[0101] As an example, taking BWP granularity as an example, different timers are configured for different BWPs, so that the terminal device determines the length of the timer associated with the BWP according to the timer configuration associated with the BWP; wherein, the length of the timer associated with different BWPs can be the same or different.

[0102] As another example, taking the resource pool granularity as an example, different timers are configured for different resource pools, so that the terminal device determines the length of the timer associated with the resource pool according to the timer configuration associated with the resource pool; wherein, the length of the timers associated with different resource pools can be the same or different.

[0103] As another example, taking the specified granularity as the resource block set granularity as an example, different timers are configured for different resource block sets, so that the terminal device determines the timer length associated with the resource block set according to the timer configuration associated with the resource block set; wherein, the timer lengths associated with different resource block sets can be the same or different.

[0104] As another example, taking the specified granularity as the terminal device granularity, different timers are configured for different terminal devices, so that the terminal device determines the length of the timer associated with the terminal device according to the timer configuration associated with the terminal device; wherein, the length of the timers associated with different terminal devices can be the same or different.

[0105] In some embodiments of this disclosure, the terminal device also determines the timer length based on the implementation.

[0106] Step S303: Determine the timer based on the first information.

[0107] For example, the terminal device determines the length of the timer based on the first information.

[0108] Step S304: Start the timer.

[0109] For example, the terminal device starts a timer to begin timing.

[0110] Step S305: When the timer expires, determine that the terminal device resumes using the physical resources to receive and / or transmit SL data; or, during the timer's operation, determine that the terminal device does not resume using the physical resources to receive and / or transmit SL data.

[0111] In the embodiments of this disclosure, the resources on the physical resources are SL resources. As an example, when the timer expires, the terminal device determines that it uses the resources on the physical resources to receive SL data.

[0112] As another example, when the timer expires, the terminal device determines that it should use physical resources to send SL data.

[0113] As another example, when the timer expires, the terminal device determines that it uses physical resources to receive and send SL data.

[0114] As another example, the terminal device determines during timer operation not to use resources on the physical resource block to receive SL data.

[0115] As another example, the terminal device determines during timer operation not to use physical resources to send SL data.

[0116] As another example, the terminal device determines during timer operation not to use physical resources to receive and send SL data.

[0117] Optionally, the above method may further include the following steps: determining that the timer has timed out and determining that the physical resource has cancelled the continuous LBT failure state of SL.

[0118] Optionally, starting the timer as described above includes: determining that a physical resource has experienced consecutive LBT failures (SL), and starting the timer associated with that physical resource.

[0119] As an example, if the detection granularity of consecutive LBT failures in SL is BWP granularity, the terminal device determines that a consecutive LBT failure of SL has occurred in BWP and starts the timer associated with that BWP.

[0120] As another example, if the detection granularity of consecutive LBT failures of SL is at the resource pool level, the terminal device determines that consecutive LBT failures of SL have occurred in the resource pool and starts the timer associated with that resource pool.

[0121] As another example, if the detection granularity of consecutive LBT failures of SL is at the resource block set granularity, the terminal device determines that consecutive LBT failures of SL have occurred in the resource block set and starts the timer associated with that resource block set.

[0122] It should be noted that, in the embodiments of this disclosure, the granularity used to configure the timer and the granularity used to maintain the timer can be the same or different.

[0123] As an example, let's consider a scenario where the granularity used to configure a timer is the same as the granularity used to maintain that timer. The granularity used for configuring and maintaining the timer is the resource pool granularity. That is, when the terminal device determines that a resource pool has experienced consecutive LBT failures (SL), it starts the timer associated with that resource pool. It can be understood that, since the granularity used for configuring the timer is the resource pool granularity, the length of the timer associated with the resource pool is determined based on the length of the timer configured for that resource pool.

[0124] As another example, consider a scenario where the granularity used to configure a timer differs from the granularity used to maintain that timer. The granularity used for configuring the timer is the BWP granularity, while the granularity used for maintaining the timer is the resource pool granularity. That is, when the terminal device determines that a resource pool has experienced consecutive LBT failures (SL), it starts the timer associated with that resource pool. It can be understood that, since the granularity used for configuring the timer is the BWP granularity, the length of the timer associated with the resource pool is determined based on the length of the timer configured in the BWP to which that resource pool belongs.

[0125] It is understood that there are two methods for allocating transmission resources in SL communication: one is dynamic network scheduling (mode 1), and the other is autonomous selection by the terminal device from the network configuration or pre-configured resource pool (mode 2). The terminal device mentioned in this embodiment refers to a terminal device operating in mode 2.

[0126] It should be noted that, in the embodiments of this disclosure, the terminal device is in any of the following states: RRC connected state, RRC idle state, RRC inactive state, and out-of-coverage state. In this state, the terminal device acquires first information including a timer and processes continuous LBT failures based on this first information.

[0127] The method for handling continuous LBT failures provided in this disclosure is applicable to mode 2 terminal devices in any of the following states: RRC connected state, RRC idle state, RRC inactive state, and out-of-coverage state.

[0128] As an example, when a terminal device in mode 2 determines that a physical resource has experienced a continuous LBT failure (SL), it executes the continuous LBT failure handling method of this embodiment based on first information including a timer. Specifically, when a terminal device in mode 2 determines that a physical resource has experienced a continuous LBT failure (SL), it starts a timer associated with the physical resource. As an example, if the continuous LBT failure detection granularity is at the resource pool level, the terminal device determines that a resource pool has experienced a continuous LBT failure (SL), and starts a timer associated with that resource pool. The terminal is defined as a terminal device in mode 2, and the terminal device is in any of the following states: RRC connected, RRC idle, RRC inactive, and out-of-coverage.

[0129] As an example, when a terminal device in mode 2 determines that a physical resource has experienced a continuous LBT failure (SL), it executes the continuous LBT failure handling method of this embodiment based on first information including a timer. Specifically, when a terminal device in mode 2 determines that a physical resource has experienced a continuous LBT failure (SL), it starts a timer associated with that physical resource. As an example, if the continuous LBT failure detection granularity is at the resource pool level, the terminal device determines that a resource pool has experienced a continuous LBT failure (SL), and starts a timer associated with that resource pool. The terminal device is a terminal device in mode 2, and it is in any of the following states: RRC idle state, RRC inactive state, and out-of-coverage state.

[0130] As another example, when a mode 2 terminal device in RRC connection state determines that a physical resource has experienced consecutive LBT failures (SL), it sends an SL consecutive LBT failure MAC (media access control) CE (control element) to the network-side device. This MAC CE contains an indication of the SL consecutive LBT failure for that physical resource. Therefore, when the SL consecutive LBT failure MAC CE is successfully sent—specifically, when the terminal device generates a MAC PDU containing this MAC CE or when the terminal device sends a MAC PDU containing this MAC CE—the terminal device starts the timer associated with that physical resource.

[0131] It should be noted that in the embodiments of this disclosure, the method of obtaining the first information is also different when the state of the terminal device is different.

[0132] As an example, when the terminal device is in RRC connected state, the terminal device obtains the first information through dedicated signaling.

[0133] As an example, when the terminal device is in the RRC idle state or the RRC inactive state, the terminal device obtains the first information through SIB (signaling in band).

[0134] As another example, when the terminal device is out of coverage, the terminal device obtains the first information through pre-configuration.

[0135] By implementing the embodiments of this disclosure, when a terminal device experiences consecutive LBT failures on physical resources, it determines whether to use the physical resources to receive and / or send SL data based on a timer configured on the network-side device. This ensures that the terminal device can promptly restore SL communication on physical resources, thereby improving the communication efficiency of the terminal device in performing SL communication.

[0136] In one implementation, the terminal device receives first information containing measurement configuration information sent by the network-side device, and then determines whether to use physical resources to receive and / or send SL data based on the measurement configuration information. For an example, please refer to [link to example]. Figure 4 , Figure 4 This is a flowchart illustrating another method for handling continuous listen-before-speak (LBT) failures provided in this disclosure. This method is applied to a terminal device. For example... Figure 4 As shown, the method may include, but is not limited to, the following steps:

[0137] Step S401: Determine that a continuous LBT failure has occurred on the physical resources.

[0138] In the embodiments of this disclosure, step S401 can be implemented in any of the ways described in the various embodiments of this disclosure. This disclosure does not limit this and will not elaborate further.

[0139] Step S402: Receive first information sent by the network-side device, the first information including measurement configuration information.

[0140] For example, the terminal device receives first information sent by the network-side device, which includes measurement configuration information. This measurement configuration information instructs the terminal device to measure relevant communication metrics after a series of consecutive LBT failures in the SL (Single Link Module) operation.

[0141] It should be noted that, in the embodiments of this disclosure, the terminal device may adjust the order of execution of steps S401 and S402 according to the implementation. That is, the terminal device may execute step S401 first and then step S402; or the terminal device may execute step S402 first and then step S401; or the terminal device may execute steps S401 and S402 simultaneously.

[0142] Step S403: Perform measurements based on the measurement configuration information to determine the measurement results associated with physical resources.

[0143] For example, the terminal device measures the communication indicators of physical resources based on the configuration information contained in the first information and obtains the measurement results.

[0144] Step S404: Based on the measurement results, determine whether the terminal device has resumed using physical resources to receive and / or send SL data.

[0145] In the embodiments of this disclosure, the resources on the physical resources mentioned above are SL resources.

[0146] As an example, the terminal device determines whether the communication meets the normal SL communication requirements based on the measurement results, thereby determining whether the terminal device should resume using physical resources to receive SL data.

[0147] As another example, the terminal device determines whether the communication indicators meet the normal SL communication requirements based on the measurement results, thereby determining whether the terminal device should resume using physical resources to receive SL data.

[0148] As another example, the terminal device determines whether the communication indicators meet the normal SL communication requirements based on the measurement results, thereby determining whether the terminal device should resume using physical resources to send and receive SL data.

[0149] Optionally, determining whether the terminal device should resume using physical resources to receive and / or transmit SL data based on the measurement results includes: determining that the terminal device should resume using physical resources to receive and / or transmit SL data if the measurement result is less than or equal to a preset threshold; or determining that the terminal device should not resume using physical resources to receive and / or transmit SL data if the measurement result is greater than or equal to a preset threshold.

[0150] In the embodiments disclosed herein, the aforementioned preset threshold is configured by the network-side device or determined by the terminal device according to the implementation.

[0151] As an example, if the terminal device determines that the measurement result is less than or equal to a preset threshold, it will determine to resume using resources on physical resources to receive SL data.

[0152] As another example, if the terminal device determines that the measurement result is less than or equal to a preset threshold, it will decide to resume using resources on physical resources to send SL data.

[0153] As another example, the terminal device determines that if the measurement result is less than or equal to a preset threshold, it determines to resume using physical resources to receive and send SL data.

[0154] As another example, if the terminal device determines that the measurement result is greater than or equal to a preset threshold, it will decide not to resume using resources on physical resources to receive SL data.

[0155] As another example, if the terminal device determines that the measurement result is greater than or equal to a preset threshold, it will decide not to resume sending SL data using physical resources.

[0156] As another example, if the terminal device determines that the measurement result is greater than or equal to a preset threshold, it will decide not to resume using physical resources to receive and send SL data.

[0157] Optionally, the above measurements include at least one of the following: RSSI (received signal strength indicator) measurement; CO (channel occupancy) measurement; CBR (channel busy rate) measurement.

[0158] It should be noted that, in the embodiments of this disclosure, when the measurement is any one of RSSI measurement, CO measurement, and CBR measurement, the network-side device configures corresponding preset thresholds for RSSI, CO, and CBR respectively. If the terminal device determines that the measurement result is less than or equal to the preset threshold, it determines to resume using the physical resources to receive and / or transmit SL data; if the terminal device determines that the measurement result is greater than or equal to the preset threshold, it determines not to resume using the physical resources to receive and / or transmit SL data.

[0159] As an example, taking RSSI measurement as an example, the network-side device configures a preset threshold corresponding to RSSI for the terminal device. If the terminal device determines that the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, it decides to resume using the resources on the physical resources to receive and / or transmit SL data; or, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI, it decides not to resume using the resources on the physical resources to receive and / or transmit SL data.

[0160] As an example, taking CO measurement as an example, the network-side device configures a preset threshold corresponding to CO for the terminal device. If the terminal device determines that the CO measurement result is less than or equal to the corresponding preset threshold, it decides to resume using the physical resources to receive and / or transmit SL data; or, if the terminal device determines that the CO measurement result is greater than or equal to the preset threshold corresponding to CO, it decides not to resume using the physical resources to receive and / or transmit SL data.

[0161] As an example, taking CBR measurement as an example, the network-side equipment configures a preset threshold corresponding to CBR for the terminal equipment. If the terminal equipment determines that the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, it determines to resume using the resources on the physical resources to receive and / or transmit SL data; or, if the terminal equipment determines that the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using the resources on the physical resources to receive and / or transmit SL data.

[0162] It should be noted that, in the embodiments of this disclosure, when the measurement is any two or three of RSSI measurement, CO measurement, and CBR measurement, the network-side device configures different preset thresholds for each measurement. Alternatively, the network-side device configures the same preset threshold for each measurement. This disclosure does not impose any limitations on this.

[0163] As an example, taking RSSI and CO measurements as examples, the network-side equipment configures preset thresholds for RSSI and CO for the terminal devices. The preset thresholds for RSSI and CO can be the same or different.

[0164] As another example, taking measurements including CO and CBR as an example, the network-side equipment configures preset thresholds for CO and CBR for the terminal equipment. The preset thresholds for CO and CBR can be the same or different.

[0165] As another example, taking measurements including RSSI and CBR as an example, the network-side equipment configures preset thresholds for RSSI and CBR for the terminal equipment. The preset thresholds for RSSI and CBR can be the same or different.

[0166] As another example, taking measurements including RSSI, CO, and CBR as an example, the network-side equipment configures preset thresholds for RSSI, CO, and CBR for the terminal equipment. The preset thresholds for RSSI, CO, and CBR can be the same or different.

[0167] In some embodiments of this disclosure, when the measurement is any two of RSSI, CO, and CBR measurements, the measurement result is determined to be less than or equal to the preset threshold if at least one of the two measurement results is less than or equal to the corresponding preset threshold. The measurement result is determined to be greater than or equal to the preset threshold if both of the two measurement results are greater than or equal to the corresponding preset threshold.

[0168] As an example, taking measurements including RSSI measurement and CO measurement as an example, the terminal device determines that if the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, and / or the CO measurement result is less than or equal to the preset threshold corresponding to CO, it determines to resume using the resources on the physical resources to receive and / or send SL data.

[0169] As another example, taking measurements including RSSI measurement and CBR measurement as an example, the terminal device determines that if the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, and / or the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, it determines to resume using resources on physical resources to receive and / or send SL data.

[0170] As another example, taking measurements including CO measurement and CBR measurement as an example, the terminal device determines that if the CO measurement result is less than or equal to the preset threshold corresponding to CO, and / or the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, it determines to resume using the resources on the physical resources to receive and / or send SL data.

[0171] As another example, taking measurements including RSSI measurement and CO measurement as an example, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI and the CO measurement result is greater than or equal to the preset threshold corresponding to CO, it determines not to resume using physical resources to receive and / or send SL data.

[0172] As another example, taking measurements including RSSI measurement and CBR measurement as an example, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI and the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using physical resources to receive and / or send SL data.

[0173] As another example, taking measurements including CO measurement and CBR measurement as an example, if the terminal device determines that the CO measurement result is greater than or equal to the preset threshold corresponding to CO, and the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using physical resources to receive and / or send SL data.

[0174] In some embodiments of this disclosure, when the measurement is any two of RSSI, CO, and CBR measurements, the measurement result is determined to be less than or equal to the preset threshold if both of the measurement results are less than or equal to the corresponding preset threshold. The measurement result is determined to be greater than or equal to the preset threshold if at least one of the two measurement results is greater than or equal to the corresponding preset threshold.

[0175] As another example, taking measurements including RSSI measurement and CO measurement as an example, the terminal device determines that the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, and the CO measurement result is less than or equal to the preset threshold corresponding to CO, and then determines to resume using the resources on the physical resources to receive and / or send SL data.

[0176] As another example, taking measurements including RSSI measurement and CBR measurement as an example, the terminal device determines that the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, and the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, and determines to resume using the resources on the physical resources to receive and / or send SL data.

[0177] As another example, taking measurements including CO measurement and CBR measurement as an example, the terminal device determines that the CO measurement result is less than or equal to the preset threshold corresponding to CO, and the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, and determines to resume using the resources on the physical resources to receive and / or send SL data.

[0178] As an example, taking measurements including RSSI measurement and CO measurement as an example, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI, and / or the CO measurement result is greater than or equal to the preset threshold corresponding to CO, it determines not to resume using physical resources to receive and / or send SL data.

[0179] As another example, taking measurements including RSSI measurement and CBR measurement as an example, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI, and / or the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using resources on physical resources to receive and / or send SL data.

[0180] As another example, taking measurements including CO measurement and CBR measurement as an example, if the terminal device determines that the CO measurement result is greater than or equal to the preset threshold corresponding to CO, and / or the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using resources on physical resources to receive and / or send SL data.

[0181] In some embodiments of this disclosure, when the measurement consists of three of RSSI, CO, and CBR measurements, the measurement result is determined to be less than or equal to the preset threshold if all three measurement results are less than or equal to their corresponding preset thresholds. The measurement result is also determined to be greater than or equal to the preset threshold if at least one of the three measurement results is greater than or equal to its corresponding preset threshold. If the terminal device determines that the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, the CO measurement result is less than or equal to the preset threshold corresponding to CO, and the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, it determines to resume using physical resources to receive and / or transmit SL data. If the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI, and / or the CO measurement result is greater than or equal to the preset threshold corresponding to CO, and / or the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using physical resources to receive and / or transmit SL data.

[0182] In some embodiments of this disclosure, when the measurement consists of three items: RSSI measurement, CO measurement, and CBR measurement, the measurement result can be determined to be less than or equal to the preset threshold if any two of the RSSI, CO, and CBR measurement results are less than or equal to the corresponding preset threshold.

[0183] As an example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that if the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, and the CO measurement result is less than or equal to the preset threshold corresponding to CO, it determines to resume using the resources on the physical resources to receive and / or send SL data.

[0184] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, and the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, and determines to resume using the resources on the physical resources to receive and / or send SL data.

[0185] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that the CO measurement result is less than or equal to the preset threshold corresponding to CO, and the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, and determines to resume using the resources on the physical resources to receive and / or send SL data.

[0186] In some embodiments of this disclosure, when the measurement consists of three of RSSI, CO, and CBR measurements, the measurement result is determined to be greater than or equal to the preset threshold if the measurement results of any two of the RSSI, CO, and CBR measurements are greater than or equal to the corresponding preset threshold.

[0187] As an example, taking RSSI measurement, CO measurement and CBR measurement as examples, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI, and the CO measurement result is greater than or equal to the preset threshold corresponding to CO, it determines not to resume using physical resources to receive and / or send SL data.

[0188] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, if the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI and the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using physical resources to receive and / or send SL data.

[0189] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, if the terminal device determines that the CO measurement result is greater than or equal to the preset threshold corresponding to CO, and the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, it determines not to resume using physical resources to receive and / or send SL data.

[0190] In some embodiments of this disclosure, when the measurement consists of three of RSSI, CO, and CBR measurements, the measurement result is determined to be less than or equal to the preset threshold if the result of any one of these measurements is less than or equal to the corresponding preset threshold. Similarly, the measurement result is determined to be greater than or equal to the preset threshold if the results of all three measurements (RSSI, CO, and CBR) are greater than or equal to the corresponding preset threshold.

[0191] As an example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that if the RSSI measurement result is less than or equal to the preset threshold corresponding to RSSI, it determines to resume using the resources on the physical resources to receive and / or send SL data.

[0192] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that if the CBR measurement result is less than or equal to the preset threshold corresponding to CBR, it determines to resume using the resources on the physical resources to receive and / or send SL data.

[0193] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that if the CO measurement result is less than or equal to the preset threshold corresponding to CO, it determines to resume using the resources on the physical resources to receive and / or send SL data.

[0194] As another example, taking RSSI measurement, CO measurement and CBR measurement as examples, the terminal device determines that the RSSI measurement result is greater than or equal to the preset threshold corresponding to RSSI, the CO measurement result is greater than or equal to the preset threshold corresponding to CO, and the CBR measurement result is greater than or equal to the preset threshold corresponding to CBR, and determines not to resume using physical resources to receive and / or send SL data.

[0195] It is understood that there are two methods for allocating transmission resources in SL communication: one is dynamic network scheduling (mode 1), and the other is autonomous selection by the terminal device from the network configuration or pre-configured resource pool (mode 2). The terminal device mentioned in this embodiment refers to a terminal device operating in mode 2.

[0196] It should be noted that, in the embodiments of this disclosure, the terminal device is in any of the following states: RRC idle state, RRC inactive state, and out-of-coverage state. In this state, the terminal device acquires first information including measurement configuration information and performs continuous listen-then-speak failure processing based on this first information.

[0197] The method for handling continuous LBT failures provided in this disclosure is applicable to mode 2 terminal devices in any of the following states: RRC idle state, RRC inactive state, and out-of-coverage state.

[0198] As an example, a terminal device in mode 2 determines that a physical resource has experienced a continuous LBT failure when it is in any of the following states: RRC idle state, RRC inactive state, or out-of-coverage state. Based on first information including measurement configuration information, it executes the continuous LBT failure handling method of this disclosure embodiment.

[0199] As an example, in an embodiment of this disclosure, the terminal device is in any of the following states: RRC connected state, RRC idle state, RRC inactive state, and out-of-coverage state. At this time, the terminal device acquires first information including measurement configuration information and performs continuous LBT failure processing based on this first information. That is, the continuous LBT failure processing method provided in this disclosure embodiment is applicable to a mode 2 terminal device in any of the following states: RRC connected state, RRC idle state, RRC inactive state, and out-of-coverage state. When a mode 2 terminal device determines that a continuous LBT failure has occurred in physical resources in any of the following states: RRC connected state, RRC idle state, RRC inactive state, and out-of-coverage state, it executes the continuous LBT failure processing method of this disclosure embodiment based on the first information including measurement configuration information.

[0200] It should be noted that in the embodiments of this disclosure, the method of obtaining the first information is also different when the state of the terminal device is different.

[0201] As an example, when the terminal device is in the RRC idle state or the RRC inactive state, the terminal device obtains the first information through the SIB.

[0202] As another example, when the terminal device is out of coverage, the terminal device obtains the first information through pre-configuration.

[0203] As another example, when the terminal device is in RRC connected state, the terminal device obtains the first information through dedicated signaling.

[0204] By implementing the embodiments of this disclosure, the terminal device determines that a continuous LBT failure has occurred on physical resources for SL (SL communication), and determines whether to resume using the resources on the physical resources to receive and / or transmit SL data based on measurement configuration information. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of the terminal device in performing SL communication.

[0205] In the embodiments of this disclosure, the allocation method of the terminal device side link transmission resources is to autonomously select the side link transmission resources.

[0206] It is understood that there are two methods for allocating transmission resources in SL communication: one is dynamic network scheduling (mode 1), and the other is autonomous selection by the terminal device from the network configuration or pre-configured resource pool (mode 2). The terminal device mentioned in this embodiment refers to a terminal device operating in mode 2.

[0207] In the embodiments of this disclosure, the terminal device is in any of the following states: RRC connected state, RRC idle state, RRC inactive state, and out-of-coverage state.

[0208] The above embodiments of this disclosure describe the method for handling continuous listening-before-speaking failures from the perspective of the terminal device. Next, the method for handling continuous listening-before-speaking failures from the perspective of the network device will be further described.

[0209] As an example, please see Figure 5 , Figure 5 This is a flowchart illustrating another method for handling continuous listen-before-speak LBT failures provided in this disclosure. This method is applied to network-side devices. Figure 5 As shown, the method may include, but is not limited to, the following steps:

[0210] Step S501: Send the first information to the terminal device.

[0211] In the embodiments of this disclosure, the first information is used to instruct the terminal device to determine whether to resume using the physical resources to receive and / or send SL data when a continuous LBT failure of SL occurs on the physical resources.

[0212] In the embodiments of this disclosure, the resources on the physical resources mentioned above are SL resources.

[0213] As an example, the network-side device sends a first message to the terminal device, which is used to indicate whether the terminal device should resume using the physical resources to receive SL data when the terminal device experiences consecutive LBT failures on the physical resources.

[0214] As another example, the network-side device sends a first message to the terminal device, which is used to instruct the terminal device whether to resume using the physical resources to send SL data when the terminal device experiences consecutive LBT failures on the physical resources.

[0215] As another example, the network-side device sends a first message to the terminal device, which is used to instruct the terminal device whether to resume using the physical resources to receive and send SL data when the terminal device experiences consecutive LBT failures on the physical resources.

[0216] By implementing the embodiments of this disclosure, the network-side device sends first information to the terminal device, so that when the terminal device experiences consecutive LBT failures on physical resources, it can determine whether to resume using the physical resources to receive and / or send SL data based on the first information. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of SL communication and avoiding waste of communication resources.

[0217] In some embodiments of this disclosure, the first information mentioned above includes a timer, which is used to indicate whether the terminal device resumes using the physical resources to receive and / or send SL data when the terminal device experiences consecutive LBT failures on physical resources.

[0218] As an example, the network-side device sends first information including a timer to the terminal device. The timer is used to indicate whether the terminal device should resume using the resources on the physical resources to receive SL data when a series of LBT failures occur on the physical resources, based on the method of the foregoing embodiments of this disclosure (e.g., the method provided in step S305).

[0219] As another example, the network-side device sends first information including a timer to the terminal device. The timer is used to indicate whether the terminal device should resume using the physical resources to send SL data when a series of LBT failures occur on the physical resources, based on the method of the foregoing embodiments of this disclosure.

[0220] As another example, the network-side device sends first information including a timer to the terminal device, which is used to indicate whether the terminal device should resume using the physical resources to receive and send SL data when a series of LBT failures occur on the physical resources, based on the method of the foregoing embodiments of this disclosure.

[0221] In one alternative implementation, the aforementioned physical resources include any of the following: BWP (bandwidth Part); resource pool; resource block set.

[0222] In some other embodiments of this disclosure, the first information mentioned above includes measurement configuration information, which is used by the terminal device to measure communication indicators associated with physical resources and determine the measurement results. The measurement results are used to indicate whether the terminal device should resume using the resources on the physical resources to receive and / or send SL data when consecutive LBT failures occur on the physical resources.

[0223] As an example, the network-side device sends first information containing measurement configuration information to the terminal device. The terminal device measures the communication indicators associated with the physical resources based on the measurement configuration information and obtains the measurement results. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resources to receive SL data based on the method of the foregoing embodiments of this disclosure (e.g., the method provided in step S404).

[0224] As another example, the network-side device sends first information containing measurement configuration information to the terminal device. The terminal device measures the communication indicators associated with the physical resources based on the measurement configuration information and obtains the measurement results. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resources to send SL data based on the method of the foregoing embodiments of this disclosure.

[0225] As another example, the network-side device sends first information containing measurement configuration information to the terminal device. The terminal device measures the communication indicators associated with the physical resources based on the measurement configuration information and obtains the measurement results. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resources to receive and send SL data based on the method of the foregoing embodiments of this disclosure.

[0226] In one alternative implementation, the above measurements include at least one of the following: RSSI measurement; CO measurement; CBR measurement.

[0227] By implementing the embodiments of this disclosure, the network-side device sends first information to the terminal device, enabling the terminal device to determine whether to use the physical resources to receive and / or send SL data when a continuous LBT failure occurs on the physical resources. This ensures that the terminal device can promptly restore SL communication on the physical resources, thereby improving the communication efficiency of the terminal device in performing SL communication and avoiding waste of communication resources.

[0228] In the embodiments provided above, the methods provided by the present disclosure have been described from the perspectives of both terminal devices and network-side devices. To implement the functions of the methods provided in the embodiments of the present disclosure, the network-side device and the first terminal device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0229] Please see Figure 7 This is a schematic diagram of the structure of a communication device 70 provided in an embodiment of this disclosure. Figure 7 The communication device 70 shown may include a transceiver module 701 and a processing module 702. The transceiver module 701 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 701 can implement both sending and / or receiving functions.

[0230] The communication device 70 can be a terminal device, a device within a terminal device, or a device compatible with a terminal device. Alternatively, the communication device 70 can be a network-side device, a device within a network-side device, or a device compatible with a network-side device.

[0231] The communication device 70 is a terminal device: a processing module 702 is used to determine that a side link SL continuous LBT failure has occurred on the physical resources; a transceiver module 701 is used to receive first information sent by the network side device; the processing module 702 is also used to determine, based on the first information, whether the terminal device should resume using the resources on the physical resources to receive and / or send SL data.

[0232] In one implementation, the first information includes a timer configured by the network-side device, and the processing module 702 is specifically used to: determine the timer according to the first information; start the timer; when the timer expires, determine that the terminal device resumes using the physical resources to receive and / or send SL data; or, during the timer's operation, determine that the terminal device does not resume using the physical resources to receive and / or send SL data.

[0233] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0234] Optionally, the timer is configured according to a specified granularity, wherein the specified granularity is any of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0235] Optionally, the processing module 702 is also used to: determine when the timer times out; and determine when the physical resource cancels the continuous LBT failure state.

[0236] Optionally, the processing module 702 is specifically used to: determine that a physical resource has experienced a continuous LBT failure (SL), and start a timer associated with the physical resource.

[0237] In one implementation, the first information includes measurement configuration information, and the processing module 702 is specifically used to: perform measurements according to the measurement configuration information, determine the measurement results associated with the physical resources, and determine whether the terminal device should resume using the resources on the physical resources to receive and / or send SL data based on the measurement results.

[0238] Optionally, the processing module 702 is specifically used to: determine that if the measurement result is less than or equal to a preset threshold, determine that the terminal device resumes using the physical resources to receive and / or send SL data; or, determine that if the measurement result is greater than or equal to a preset threshold, determine that the terminal device does not resume using the physical resources to receive and / or send SL data.

[0239] Optionally, the measurements include at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy (CO) measurement; Channel Busyness Rate (CBR) measurement.

[0240] In one implementation, the allocation method of the downlink transmission resources on the terminal device side is to autonomously select the downlink transmission resources, wherein the terminal device is in any of the following states: Radio Resource Control (RRC) connected state; RRC idle state; RRC inactive state; or out of coverage state.

[0241] With the apparatus of this embodiment, when a terminal device experiences consecutive LBT failures on physical resources, it determines, based on determined first information, whether to resume using the physical resources to receive and / or transmit SL data. This ensures that the terminal device can promptly resume SL communication on physical resources, thereby improving the communication efficiency of SL communication and avoiding waste of communication resources.

[0242] The communication device 70 is a network-side device: transceiver module 701, used to send first information to the terminal device. The first information is used to instruct the terminal device to determine whether to resume using the resources on the physical resources to receive and / or send SL data when the side link SL continuous listen-before-tell LBT failure occurs on the physical resources.

[0243] In one implementation, the first information includes a timer that indicates whether the terminal device has resumed using physical resources to receive and / or send SL data.

[0244] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0245] Optionally, the timer is configured according to a specified granularity, which includes any of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0246] In one implementation, the first information includes measurement configuration information, which is used by the terminal device to perform measurements and determine the measurement results associated with the physical resources. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resources to receive and / or send SL data.

[0247] In one optional implementation, the measurement includes at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy Rate (CO) measurement; Channel Busy Rate (CBR) measurement.

[0248] Through the apparatus of this embodiment, the network-side device sends first information to the terminal device, so that when the terminal device experiences consecutive LBT failures on physical resources, it can determine whether to resume using the physical resources to receive and / or send LBT data based on the first information. This ensures that the terminal device can promptly resume LBT communication on physical resources, thereby improving the communication efficiency of LBT communication and avoiding waste of communication resources.

[0249] Please see Figure 7 , Figure 7 This is a schematic diagram of another communication device 70 provided in this embodiment. The communication device 70 can be a network-side device, a terminal device, a chip, chip system, or processor that supports the network-side device in implementing the above methods, or a chip, chip system, or processor that supports the terminal device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; please refer to the description in the above method embodiments for details.

[0250] The communication device 70 may include one or more processors 701. The processor 701 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0251] Optionally, the communication device 70 may further include one or more memories 702, on which a computer program 703 may be stored. The processor 701 executes the computer program 703 to cause the communication device 70 to perform the methods described in the above method embodiments. Optionally, the memory 702 may also store data. The communication device 70 and the memory 702 may be provided separately or integrated together.

[0252] Optionally, the communication device 70 may further include a transceiver 704 and an antenna 705. The transceiver 704 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 704 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0253] Optionally, the communication device 70 may further include one or more interface circuits 706. The interface circuits 706 are used to receive code instructions and transmit them to the processor 701. The processor 701 executes the code instructions to cause the communication device 70 to perform the methods described in the above method embodiments.

[0254] Communication device 70 is a terminal device: transceiver 704 is used to perform... Figure 2 Step S202; Processor 701 is used to execute Figure 2 Steps S201 and S202 in the process; execute Figure 3 Steps S301, S303, S304, and S305 in the process; Figure 4 Steps S401, S403, and S404 in the process.

[0255] Communication device 70 is a network-side device: transceiver 704 is used to perform... Figure 5 Step S501 in the process.

[0256] In one implementation, the processor 701 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0257] In one implementation, processor 701 may store a computer program 703, which runs on processor 701 and causes communication device 70 to perform the methods described in the above method embodiments. The computer program 703 may be embedded in processor 701; in this case, processor 701 may be implemented in hardware.

[0258] In one implementation, the communication device 70 may include circuitry capable of performing the transmitting, receiving, or communication functions described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0259] The communication device described in the above embodiments may be a network-side device or a terminal device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 7 The communication device can be a standalone device or part of a larger device. For example, the communication device can be:

[0260] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0261] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0262] (3) ASIC, such as modem;

[0263] (4) Modules that can be embedded in other devices;

[0264] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network-side equipment, cloud equipment, artificial intelligence equipment, etc.

[0265] (6) Others, etc.

[0266] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 8 The diagram shows the structure of the chip. Figure 8 The chip shown includes a processor 801 and an interface 802. There can be one or more processors 801, and multiple interfaces 802.

[0267] Regarding the case where the chip is used to implement the functions of the terminal device in the embodiments of this disclosure:

[0268] Processor 801 is configured to determine that a side link SL continuous LBT failure has occurred on physical resources; interface 802 is configured to receive first information sent by network-side device; processor 801 is further configured to determine, based on the first information, whether terminal device should resume using resources on physical resources to receive and / or send SL data.

[0269] In one implementation, the first information includes a timer configured by the network-side device, and the processor 801 is specifically used to: determine the timer according to the first information; start the timer; when the timer expires, determine that the terminal device resumes using the resources on the physical resources to receive and / or send SL data; or, during the operation of the timer, determine that the terminal device does not resume using the resources on the physical resources to receive and / or send SL data.

[0270] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0271] Optionally, the timer is configured according to a specified granularity, wherein the specified granularity is any of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0272] Optionally, the processor 801 is also configured to: determine a timer timeout; determine a physical resource cancellation SL continuous LBT failure state.

[0273] Optionally, the processor 801 is specifically used to: determine that a physical resource has experienced a continuous LBT failure (SL), and start a timer associated with the physical resource.

[0274] In one implementation, the first information includes measurement configuration information, and the processor 801 is specifically used to: perform measurements according to the measurement configuration information, determine the measurement results associated with the physical resources, and determine whether the terminal device should resume using the resources on the physical resources to receive and / or send SL data based on the measurement results.

[0275] Optionally, the processor 801 is specifically configured to: determine that if the measurement result is less than or equal to a preset threshold, determine that the terminal device resumes using the resources on the physical resources to receive and / or transmit SL data; or, determine that if the measurement result is greater than or equal to the preset threshold, determine that the terminal device does not resume using the resources on the physical resources to receive and / or transmit SL data.

[0276] Optionally, the measurements include at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy (CO) measurement; Channel Busyness Rate (CBR) measurement.

[0277] In one implementation, the allocation method of the downlink transmission resources on the terminal device side is to autonomously select the downlink transmission resources, wherein the terminal device is in any of the following states: Radio Resource Control (RRC) connected state; RRC idle state; RRC inactive state; or out of coverage state.

[0278] For cases where the chip is used to implement the functions of the network-side device in the embodiments of this disclosure:

[0279] Interface 802 is used to send first information to the terminal device. The first information is used to instruct the terminal device to determine whether to resume using the resources on the physical resources to receive and / or send SL data when a continuous listen-before-talk (LBT) failure occurs on the side link SL on the physical resources.

[0280] In one implementation, the first information includes a timer that indicates whether the terminal device has resumed using physical resources to receive and / or send SL data.

[0281] In one alternative implementation, the physical resources include any of the following: a bandwidth portion (BWP); a resource pool; or a set of resource blocks.

[0282] Optionally, the timer is configured according to a specified granularity, which includes any of the following: BWP granularity; resource pool granularity; resource block set granularity; terminal device granularity.

[0283] In one implementation, the first information includes measurement configuration information, which is used by the terminal device to perform measurements and determine the measurement results associated with the physical resources. The measurement results are used to instruct the terminal device to determine whether to resume using the resources on the physical resources to receive and / or send SL data.

[0284] In one optional implementation, the measurement includes at least one of the following: Received Signal Strength Indication (RSSI) measurement; Channel Occupancy Rate (CO) measurement; Channel Busy Rate (CBR) measurement.

[0285] Optionally, the chip also includes a memory 803, which is used to store necessary computer programs and data.

[0286] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0287] This disclosure also provides a system for handling continuous failures of listening before speaking, the system comprising the aforementioned... Figure 6 In the embodiments, the communication device serves as a terminal device and the communication device serves as a network-side device; alternatively, the system includes the aforementioned components. Figure 7 The embodiments include a communication device as a terminal device and a communication device as a network-side device.

[0288] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0289] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0290] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as 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 this 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 transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0291] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0292] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0293] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0294] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0295] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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.

[0296] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0297] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for handling continuous listen before talk (LBT) failures, the method comprising: determining a number of LBT failures; and performing a procedure based on the number of LBT failures. The method is performed by a terminal device, and the method comprises: determining that a sidelink, SL, continuous LBT failure occurs on a physical resource; receiving first information sent by a network-side device; determining, according to the first information, whether the terminal device resumes using resources on the physical resource to receive and / or transmit SL data; the first information comprises a timer configured by the network-side device, the timer is configured according to a specified granularity, the specified granularity comprises a terminal device granularity, and the determining, according to the first information, whether the terminal device resumes using resources on the physical resource to receive and / or transmit SL data comprises: determining the timer according to the first information; starting the timer; when the timer expires, determining that the terminal device resumes using resources on the physical resource to receive and / or transmit SL data; or during the running of the timer, determining that the terminal device does not resume using resources on the physical resource to receive and / or transmit SL data.

2. The method of claim 1, wherein, The physical resource comprises any one of the following: a bandwidth part, BWP; a resource pool; a resource block set.

3. The method of claim 2, wherein, The specified granularity further comprises any one of the following: a BWP granularity; a resource pool granularity; a resource block set granularity.

4. The method of claim 1, wherein, The method further comprises: determining that the timer expires; determining that the physical resource cancels the SL continuous LBT failure state.

5. The method of any one of claims 1 to 4, wherein, The starting the timer comprises: determining that the physical resource has the SL continuous LBT failure, starting the timer associated with the physical resource.

6. The method of claim 5, wherein, The first information further comprises measurement configuration information, and the determining, according to the first information, whether the terminal device resumes using resources on the physical resource to receive and / or transmit SL data comprises: performing measurement according to the measurement configuration information to determine a measurement result associated with the physical resource; determining, according to the measurement result, whether the terminal device resumes using resources on the physical resource to receive and / or transmit SL data.

7. The method of claim 6, wherein, The determining, according to the measurement result, whether the terminal device resumes using resources on the physical resource to receive and / or transmit SL data comprises: determining that the measurement result is less than or equal to a preset threshold, and determining that the terminal device resumes using resources on the physical resource to receive and / or transmit SL data; or determining that the measurement result is greater than or equal to the preset threshold, and determining that the terminal device does not resume using resources on the physical resource to receive and / or transmit SL data.

8. The method of claim 6 or 7, wherein, The measurement comprises at least one of the following: a received signal strength indication, RSSI, measurement; a channel occupancy, CO, measurement; a channel busy ratio, CBR, measurement.

9. The method of any one of claims 1 to 8, wherein, The terminal device is in any one of the following states: a radio resource control, RRC, connected state; an RRC idle state; an RRC inactive state; an out-of-coverage state. The method is performed by a network-side device, and the method comprises:

10. A method for handling consecutive listen-before-talk (LBT) failures, the method comprising: ​ The network-side device sends first information to the terminal device, the first information including a timer configured by the network-side device, the timer being configured according to a specified granularity, the specified granularity including a terminal device granularity, the first information being used to instruct the terminal device to determine, when a sidelink (SL) continuous listen before talk (LBT) failure occurs on a physical resource, to start the timer and, when the timer expires, to determine that the terminal device resumes using resources on the physical resource to receive and / or send SL data; or, during running of the timer, to determine that the terminal device does not resume using resources on the physical resource to receive and / or send SL data.

11. The method of claim 10, wherein, The physical resource includes any one of the following: a bandwidth part (BWP); a resource pool; and a resource block set.

12. The method of claim 11, wherein, The specified granularity includes any one of the following: a BWP granularity; a resource pool granularity; and a resource block set granularity.

13. The method of claim 10, wherein, The first information includes measurement configuration information, the measurement configuration information being used for the terminal device to perform measurement to determine a measurement result associated with the physical resource, the measurement result being used to instruct the terminal device to determine whether to resume using resources on the physical resource to receive and / or send SL data.

14. The method of claim 13, wherein, The measurement includes at least one of the following: a received signal strength indication (RSSI) measurement; a channel occupancy (CO) measurement; and a channel busy ratio (CBR) measurement.

15. A terminal device, comprising: The network-side device includes: a processing module configured to determine a sidelink (SL) continuous listen before talk (LBT) failure on a physical resource; a transceiver configured to receive first information sent by a network-side device; the processing module is further configured to determine, according to the first information, whether the terminal device resumes using resources on the physical resource to receive and / or send SL data; the first information includes a timer configured by the network-side device, the timer being configured according to a specified granularity, the specified granularity including a terminal device granularity, and the processing module is specifically configured to: determine the timer according to the first information; start the timer; determine, when the timer expires, that the terminal device resumes using resources on the physical resource to receive and / or send SL data; or determine, during running of the timer, that the terminal device does not resume using resources on the physical resource to receive and / or send SL data.

16. A network-side device, comprising: The network-side device includes: a sending module configured to send first information to a terminal device, the first information including a timer configured by the network-side device, the timer being configured according to a specified granularity, the specified granularity including a terminal device granularity, the first information being used to instruct the terminal device to determine, when a sidelink (SL) continuous listen before talk (LBT) failure occurs on a physical resource, to start the timer and, when the timer expires, to determine that the terminal device resumes using resources on the physical resource to receive and / or send SL data; or, during running of the timer, to determine that the terminal device does not resume using resources on the physical resource to receive and / or send SL data.

17. A communications device, characterized by The apparatus comprises a processor and a memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the apparatus to perform the method of any one of claims 1 to 9.

18. A communications device, characterized by The apparatus comprises a processor and a memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the apparatus to perform the method of any one of claims 10 to 14.

19. A computer readable storage medium storing instructions that, when executed, cause the method of any one of claims 1 to 9 to be implemented.

20. A computer readable storage medium storing instructions that, when executed, cause the method of any one of claims 10 to 14.

21. A communication system, characterized by comprising: a terminal device configured to perform the method of any one of claims 1 to 9; and a network-side device configured to perform the method of any one of claims 10 to 14.

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