METHOD FOR WIRELESS COMMUNICATION, TERMINAL DEVICE, CHIP AND COMPUTER-READABLE STORAGE MEDIA

Abstract

The present application provides a wireless communication method and a terminal device. The method comprises: a terminal device determines a first policy related to consecutive listen before talk (LBT) failures, the detection of the consecutive LBT failures being related to a resource granularity.

Description

1 / 92 METHOD FOR WIRELESS COMMUNICATION, TERMINAL DEVICE, CHIP AND COMPUTER-READABLE STORAGE MEDIA FIELD OF TECHNIQUE

[001] The present disclosure relates to the technical field of communications and, in particular, to a method for wireless communication and to a terminal device. BACKGROUND

[002] The terminal device may transmit a signal based on the listen-before-speak (LBT) principle in an unlicensed spectrum. If the channel capture result is that the channel is idle, the terminal device may use the unlicensed spectrum channel for signal transmission; and if the channel capture result is that the channel is busy, normally the terminal device is permitted to use the unlicensed spectrum channel for signal transmission.

[003] For a side-link communication scenario, an enhanced consideration is introduced for consistent LBT failure. However, at present, there is no specific rule related to the details of consistent LBT failure. SUMMARY

[004] The present disclosure provides a method for wireless communication and a terminal device. Several aspects related to the present disclosure will be described in detail below.

[005] In one aspect, a wireless communication method is provided, the method involves a terminal device determining a first policy related to a Petition 870250083220, dated 09 / 16 / 2025, p. 8 / 250 2 / 92 Consistent LBT failure, the capture of consistent LBT failure is related to a feature granularity.

[006] In a second aspect, a terminal device is provided, the terminal device includes a determination unit configured to determine a first policy related to a consistent LBT failure, the capture of the consistent LBT failure is related to a feature granularity.

[007] In a third aspect, a terminal device is provided, the terminal device includes a memory and a processor. The memory is configured to store a program and the processor is configured to invoke the computer program in memory, to perform the method of the first aspect.

[008] In a fourth aspect, an apparatus is provided, the apparatus includes a processor configured to call a program from memory to perform the method of the first aspect.

[009] In a fifth aspect, a chip is provided, the chip includes a processor configured to call a program from memory, to cause a device on which the chip is mounted to perform the method of the first aspect.

[0010] In a sixth aspect, a computer-readable storage medium is provided for storing a program on which, when executed on a computer, causes the computer to perform the method of the first aspect.

[0011] In a seventh aspect, a computer program product is provided; the computer program product includes a program that, when executed on a Petition 870250083220, dated 09 / 16 / 2025, page 9 / 250 3 / 92 computer, causes the computer to perform the method of the first aspect.

[0012] In an eighth aspect, a computer program is provided, the computer program, when run on a computer, causes the computer to perform the method of the first aspect.

[0013] In this disclosure, information related to the granularity of the resource is considered when detecting consistent LBT failure, and furthermore, the policy related to consistent LBT is determined. Therefore, a specific solution is provided for the terminal device to perform operations related to consistent LBT failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a diagram of an example system architecture of a wireless communication system for application of modalities of the present disclosure.

[0015] Figure 2 is an example diagram of a side-link communication scenario within the network coverage.

[0016] Figure 3 is a diagram of an example of a side-link communication scenario partially covered by a network.

[0017] Figure 4 is a diagram of an example of a side link communication scenario outside the network coverage area.

[0018] Figure 5 is a schematic diagram of a feature selection method based on capture in a side-link communication system.

[0019] Figure 6 is a diagram of an example of a broadcast-based side link communication mode. Petition 870250083220, dated 09 / 16 / 2025, page 10 / 250 4 / 92

[0020] Figure 7 is a diagram of an example of a point-to-point broadcast-based side link communication mode.

[0021] Figure 8 is a diagram of an example of a side link communication mode based on selective broadcasting.

[0022] Figure 9 is a schematic diagram of a correspondence relationship between different resources according to the present disclosure.

[0023] Figure 10 is a schematic flowchart of a method for wireless communication provided in an embodiment of the present disclosure.

[0024] Figure 11 is a schematic flowchart of a communication method, in which a consistent LBT failure occurs in a set of RBs and a resource switching policy is switching a grouping of resources, provided in an embodiment of the present disclosure.

[0025] Figure 12 is a schematic flowchart of a communication method, in which a consistent LBT failure occurs in a set of RBs and a resource switching policy is switching a set of RBs, provided in an embodiment of the present disclosure.

[0026] Figure 13 is a schematic flowchart of a communication method, in which a consistent LBT failure occurs in a resource cluster and a resource switching policy is switching a resource cluster, provided in an embodiment of the present disclosure.

[0027] Figure 14 is a schematic block diagram of a terminal device according to an embodiment of the present disclosure. Petition 870250083220, dated 09 / 16 / 2025, page 11 / 250 5 / 92

[0028] Figure 15 is a schematic structural diagram of an apparatus provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Solutions to the present disclosure will be described with reference to the accompanying drawings. COMMUNICATION SYSTEM ARCHITECTURE

[0030] Figure 1 is a diagram of an example system architecture of a 100 wireless communication system for application of embodiments of the present disclosure. The 100 wireless communication system may include a 110 network device and a 120 terminal device. The 110 network device may be a device that communicates with the 120 terminal device. The 110 network device may provide communication coverage for a particular geographic area and may communicate with the 120 terminal device located within the coverage area.

[0031] Figure 1 illustrates a network device and a terminal device by way of example. Optionally, the wireless communication system 100 may include one or more network devices and / or one or more terminal devices. For a network device 110, all one or more terminal devices 120 may be located within the network coverage range of the network device 110, or they may be located outside the network coverage range of the network device 110, or some of them may be located within the coverage range of the network device 110, and some of them may be located outside the network coverage range of the network device 110. This is not limited in the embodiment of the present disclosure. Petition 870250083220, dated 09 / 16 / 2025, page 12 / 250 6 / 92

[0032] Optionally, the 100 wireless communication system may additionally include other network entities, such as a network controller and a mobility management entity. This is not limited to this embodiment of the disclosure.

[0033] It is understood that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as: a 5th generation (5G) system or a new radio (NR) system, a long-term evolution (LTE) system, a frequency-division duplex (FDD) LTE system, a time-division duplex (TDD) LTE system and the like. The technical solutions provided by the present disclosure can also be applied to a future communication system, such as a sixth-generation mobile communication system, a satellite communication system and the like.

[0034] In embodiments of the present disclosure, the terminal device may be referred to as user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile console, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user appliance. In embodiments of the present disclosure, the terminal device may provide voice and / or data connectivity to a user, for example, for connection with humans, goods, and machines. For example, the terminal device may be a portable device with a wireless connection function, an onboard device, and the like. In one embodiment of the present disclosure, the terminal device may be a mobile phone, Petition 870250083220, dated 09 / 16 / 2025, page 13 / 250 7 / 92 a tablet computer, a laptop computer, a handheld computer, a mobile internet device (MID), a body-worn device, a vehicle, a wireless terminal in industrial control, a wireless terminal in autonomous driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart network, a wireless terminal in transport security, a wireless terminal in a smart city, or a wireless terminal in a smart home, etc. For example, the terminal device can act as a scheduling entity that provides a side-link signal between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) communication, etc. For example, a cell phone and a car communicate with each other via the side-link signal. Communication between a cell phone and a smart home device without relaying the communication signal through a base station.Alternatively, the terminal device can act as a base station.

[0035] The network device in an embodiment of the present disclosure may be a device for communicating with the terminal device, and the network device may also be referred to as an access network device or a radio access network device, for example, the network device may be a base station. The network device in the embodiments of the present disclosure may be a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. The base station may broadly encompass or be replaced by various names, such as a NodeB, an evolved NodeB (eNB), a next-generation NodeB (gNB), a relay station, a point of Petition 870250083220, dated 09 / 16 / 2025, p. 14 / 250 8 / 92 access, a transmit and receive point (TRP), a transmit point (TP), a master NodeB (MeNB), a secondary NodeB (SeNB), a multi-pattern radio node (MSR), a home base station, a network controller, an access node, a wireless node, an access point (AP), a transmit node, a transmit and receive node, a baseband unit (BBU), a remote radio unit (RRU), an active antenna unit (AAU), a remote radio head (RRH), a central unit (CU), a distributed unit (DU), a positioning node, and so on. The base station can be a macro base station, a micro base station, a relay node, a donor node, or something similar, or a combination thereof. The base station can also be referred to as a communication module, a modem, or a chip housed within the aforementioned devices or apparatus.A base station can be a mobile switching center, a device that performs the base station function in D2D, V2X, or machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that performs the base station function in a future communication system, or something similar. Base stations can support networks with the same or different access technologies. The specific technology and specific device form adopted by the network device are not limited in the embodiments of the present disclosure.

[0036] The base station can be fixed or mobile. For example, a helicopter or an unmanned aerial vehicle can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or unmanned aerial vehicle can be configured as a Petition 870250083220, dated 09 / 16 / 2025, page 15 / 250 9 / 92 device that communicates with another base station.

[0037] In some deployments, the network device in the embodiments of this disclosure may be a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0038] The terminal device can be deployed on land, including indoors or outdoors, portable or vehicle-mounted; or it can also be deployed on water; or it can also be deployed on an airplane, a balloon, and a satellite in the air. The scenario in which the network device and the terminal device are located is not limited in the embodiments of this application. Side link communication in different network coverage scenarios.

[0039] A side-link communication is a communication technology based on a side link. Side-link communication can be, for example, D2D or V2X communication. Communication data is received or transmitted between the terminal device and the network device in a traditional cellular system. However, side-link communication supports the direct transmission of communication data between terminal devices. Compared to traditional cellular communication, the direct transmission of communication data between terminal devices can have higher spectral efficiency and lower transmission delay. For example, the V2X system uses side-link communication technology.

[0040] In side-link communications, side-link communications can be divided according to the network coverage in which the terminal device is located. Petition 870250083220, dated 09 / 16 / 2025, page 16 / 250 10 / 92 located, in a side link communication within network coverage, a side link communication partially covered by network coverage, and a side link communication outside network coverage.

[0041] Figure 2 is an example diagram of a side-link communication scenario within network coverage. In the scenario illustrated in Figure 2, two terminal devices 120a are located within the coverage range of network device 110. Therefore, both terminal devices 120a can receive a configuration signal from network device 110 (the configuration signal in this disclosure can also be replaced by configuration information) and determine the side-link configuration according to the configuration signal from network device 110. After both terminal devices 120a are configured on the side-link, the terminal devices can perform side-link communication on the side-link.

[0042] Figure 3 is a diagram of an example of a side-link communication scenario partially covered by a network. In the scenario illustrated in Figure 3, terminal device 120a performs side-link communication with terminal device 120b. Since terminal device 120a is located within the coverage range of network device 110, terminal device 120a can receive configuration signaling from network device 110 and determine the side-link configuration according to the configuration signaling from network device 110. Terminal device 120b is located outside the network coverage range and cannot receive the Petition 870250083220, dated 09 / 16 / 2025, page 17 / 250 11 / 92 Network device configuration signaling 110. In this case, terminal device 120b can determine the side link configuration according to pre-configuration information and / or information carried on a physical side link broadcast channel (PSBCH) sent by terminal device 120a located within the network coverage range. After terminal device 120a and terminal device 120b are configured on the side link, the terminal devices can perform side link communication on the side link.

[0043] Figure 4 is a diagram of an example of a side-link communication scenario outside the network coverage. In the scenario illustrated in Figure 4, both terminal devices 120a are located outside the coverage range of network device 110. In this case, both terminal devices 120b can determine the side-link configuration according to the pre-configuration information. After both terminal devices 120b are configured on the side-link, they can perform side-link communication on the side-link. D2D STUDY AT DIFFERENT STAGES

[0044] In the communication protocol of the 3rd generation partnership project (3GPP), D2D is divided into different study stages, described below by way of example.

[0045] In Rel-12 / 13, D2D communication mainly studies proximity services (ProSe), which are primarily intended for public safety services. In ProSe, the terminal device can perform discontinuous transmission or reception of data on the side link, configuring a location of a resource grouping in a time domain. Petition 870250083220, dated 09 / 16 / 2025, page 18 / 250 12 / 92 (for example, resource grouping is discontinuous in the time domain), thus achieving energy savings.

[0046] In Rel-14 / 15, the V2X system primarily studies a vehicle-to-vehicle communication scenario, and is mainly oriented towards high-speed vehicle-to-vehicle and vehicle-to-person relative motion communication services. In V2X, since the onboard system has a continuous power supply, energy efficiency is not a primary concern, but data transmission delay is a significant issue. Therefore, the terminal device needs to perform continuous transmission or reception in the system design.

[0047] In Rel-14, a scenario is studied in which a wearable device accesses the network via a mobile phone, which is primarily geared towards scenarios with low movement speed and low power access. In other device-to-device (FeD2D) enhancements, a conclusion at the pre-research stage is that the base station can configure discontinuous reception parameters (DRX) from a remote terminal via a relay terminal, but as this topic is no longer in a standardization stage, specific details of how to configure DRX have not yet been finalized. LATERAL LINK COMMUNICATION MODES (LTE D2D / V2X)

[0048] Two lateral link communication modes are defined in some standards or protocols (such as 3GPP): a first mode and a second mode.

[0049] In the first mode, a feature of the terminal device (the feature mentioned in this disclosure may also be called a transmission feature, Petition 870250083220, dated 09 / 16 / 2025, page 19 / 250 13 / 92 (as a time-frequency resource) is allocated by the network device. The terminal device can transmit data over the side link according to the resource allocated by the network device. The network device can allocate a resource for a single transmission to the terminal device, or it can also allocate a resource for a semi-static transmission to the terminal device. The first mode can be applied to a scenario with network device coverage, such as the scenario illustrated in Figure 2. In the scenario illustrated in Figure 2, since terminal device 120a is located within the network coverage range of network device 110, network device 110 can therefore allocate a resource to terminal device 120a to be used in the side link transmission process.

[0050] In the second mode, the terminal device can autonomously select one or more resources from a resource set (RP). The terminal device can then perform side-link transmission according to the selected resource. For example, in the scenario illustrated in Figure 4, terminal device 120b is located outside the coverage range of a cell. Therefore, terminal device 120b can autonomously select the resource for side-link transmission from a pre-configured resource set. Optionally, in the scenario illustrated in Figure 2, terminal device 120a can also autonomously select one or more resources for side-link transmission from the resource set configured by network device 110. NR V2X

[0051] LTE V2X studies primarily for a Petition 870250083220, dated 09 / 16 / 2025, page 20 / 250 14 / 92 transmission scenario, and NR's V2X is further extended to a point-to-point broadcast scenario and a selective broadcast scenario based on LTE's V2X. In other words, NR's V2X application scenarios include broadcast, point-to-point broadcast, and selective broadcast scenarios. NR studies the application of V2X in these scenarios.

[0052] Similar to LTE V2X, NR V2X also defines two resource allocation modes. In addition, the terminal device can also be in mixed mode, i.e., the terminal device can acquire resources using either the first or second mode. Resource acquisition by the terminal device can be indicated by a side link allocation, i.e., the side link allocation indicates the time-frequency positions of the resources of a corresponding physical side link control channel (PSCCH) and a shared physical side link channel (PSSCH).

[0053] Compared to LTE V2X, in addition to a hybrid auto-repeat request (HARQ) retransmission without return initiated by the terminal device autonomously, NR V2X introduces a return-based HARQ retransmission. This return-based HARQ retransmission is not limited to point-to-point broadcast communication, but is also applicable to selective broadcast communication.

[0054] Similar to LTE V2X, in NR V2X, since the onboard system has a continuous power supply, energy efficiency is not the main issue, but data transmission delay is the main problem. Therefore, the terminal device needs to perform continuous transmission or reception in the system design. Petition 870250083220, dated 09 / 16 / 2025, page 21 / 250 15 / 92 NR V2X FEATURE SELECTION METHOD IN SECOND MODE

[0055] In NR V2X, some new features are introduced, such as support for a large number of aperiodic services, an increased number of retransmissions, and more flexible resource reservation periods. These features have a significant influence on the autonomous resource selection mode by the terminal device. In the second mode, the terminal device can select a resource that is not reserved by another terminal device, or is reserved by another terminal device but has lower reception power, in resource pooling by decoding side link control information (SCI) transmitted by another terminal device and measuring the reception power of the side link.

[0056] In some implementations, the terminal device can execute the resource allocation scheme in the second mode through operation 1 and operation 2 below.

[0057] Operation 1: The terminal device uses all available resources in a resource selection window as a resource set A. Specifically, this operation can be divided into case 1-1 and case 1-2.

[0058] In case 1-1, if the terminal device does not capture in some slots within a capture window, all resources in slots within the selection window corresponding to those uncaptured slots are excluded. In some implementations, the terminal device can determine the slots within the selection window corresponding to the uncaptured slots within the capture window based on a set of values ​​from a resource reservation period field in the Petition 870250083220, dated 09 / 16 / 2025, page 22 / 250 16 / 92 resource grouping configuration used.

[0059] In case 1-2, if the terminal device detects a PSCCH in the capture window, the terminal device measures a received reference signal power (RSRP) from the PSCCH or the RSRP of a PSSCH scheduled by the PSCCH. If the measured RSRP is greater than an RSRP threshold (SL-RSRP) and it is determined that the reserved resource is within the resource selection window according to the resource reservation information in the side link control information transmitted in the PSCCH, the corresponding resource is excluded from resource set A. If the remaining resources in resource set A are less than X% of all resources before resource exclusion in resource set A, the SL-RSRP threshold is increased by 3 dB, and operation 1 is performed again. In some implementations, the possible values ​​of X may be {20, 35, 50}, and the terminal device may determine the parameter X from this set of values ​​according to a priority of the data to be transmitted.Compared to LTE V2X, where the X% value is fixed at 20%, the X% value in NR V2X is more flexible. The X% value in NR V2X can be configured by the network device or can be pre-configured. In some implementations, the X% value can be calculated in a resource grouping unit.

[0060] In addition, the SL-RSRP limit mentioned above is associated with a priority carried in the PSCCH detected by the terminal and the priority of the data to be transmitted by the terminal device. The terminal device defines the remaining resources after the exclusion of resources in set A as a candidate resource set.

[0061] Operation 2: the terminal device Petition 870250083220, dated 09 / 16 / 2025, page 23 / 250 17 / 92 randomly selects several resources from the candidate resource set as transmission resources for the initial transmission and retransmission of the terminal device. In some implementations, the terminal device may randomly select one or more transmission resources with equal probability from resource set A. Note that one or more of the following two conditions must be met when the terminal device selects a plurality of transmission resources.

[0062] Condition 1: After removing certain exception cases, the terminal device may allow the selected retransmission resource to be indicated by a previously transmitted first-order SIC. Exception cases include one or more of the following: Case 1, the terminal device fails to select a resource that satisfies the time domain constraint of resource set A after performing resource exclusion; Case 2, the terminal device may interrupt transmission due to factors such as resource preemption, congestion control, and conflict with an uplink service, which may result in no previously transmitted first-order SIC indication for the transmission resource of some retransmission.

[0063] Condition 2: For any two selected time-frequency resources, the terminal device must ensure that: these two resources are separated by at least a duration Z in the time domain, if the previous transmission of these two resources requires a HARQ return. When no resource that meets the time domain constraint can be selected in resource selection, for example, when a packet delay budget Petition 870250083220, dated 09 / 16 / 2025, page 24 / 250 18 / 92 (PDB) is short, but the number of retransmissions is large; the terminal device may discard the selection of some retransmission features or disable HARQ return for some transmissions. The scheme that the terminal device specifically adopts may depend on the terminal device implementation. Resource Selection Method Based on Fundraising

[0064] Referring to Figure 5, the terminal device can trigger feature selection or re-selection in slot n. In some implementations, slot n may be a slot in which an upper layer triggers a physical layer to report the candidate feature set. The feature selection window starts at n+T1 and ends at n+T2, indicated as [n+T1, n+T2], where 0 <= Ti <= Tproc,1 and Tproc,1 is 3 slots, 5 slots, 9 slots, or 17 slots when a subcarrier spacing is 15 kHz, 30 kHz, 60 kHz, or 120 kHz, respectively. T2min <= T2 <= remaining service delay budget, the set of T2min values ​​is {1, 5, 10, 20} * 2μ intervals, where μ = 0, 1, 2 or 3 corresponds, respectively, to the case where the subcarrier spacing is 15 kHz, 30 kHz, 60 kHz or 120 kHz. The terminal device determines T2min from the set of values ​​according to the priority of the data to be transmitted by the terminal device.For example, when the subcarrier spacing is 15 kHz, the terminal device determines T2min from the set {1, 5, 10, 20} according to the priority of the data to be transmitted by the terminal device. When T2min is greater than or equal to the remaining delay budget of the service, T2 is equal to the remaining delay budget of the service. The remaining delay budget is a difference between a time. Petition 870250083220, dated 09 / 16 / 2025, page 25 / 250 19 / 92 corresponds to a data delay requirement and the current time. For example, the delay requirement for a data packet arriving at slot n is 50 milliseconds, and assuming a slot is 1 millisecond, the remaining delay budget is 50 milliseconds when the current time is slot n+20, and the remaining delay budget is 30 milliseconds when the current time is slot n+20.

[0065] Before feature selection, the terminal device needs to perform capture in the capture window from n-T0 to n-Tproc,0, and the value of To is 100 milliseconds or 1100 milliseconds. Tproc,0 is 1 slot, 1 slot, 2 slots, or 4 slots when the subcarrier spacing is 15 kHz, 30 kHz, 60 kHz, or 120 kHz, respectively. Generally, the terminal device monitors the SCI of other terminal devices in each interval (except its own transmission interval). If feature selection or re-selection is triggered in slot n, the terminal device can use a feature capture result from n-T0 to n-Tproc,0. The feature selection process is described below in combination with operation a for operation b.

[0066] Operation a: the terminal device (such as the physical layer of the terminal device) excludes resources that are not applicable for side-link transmission from the resource selection window according to the channel capture result.

[0067] The terminal device considers all available candidate resources, belonging to the resource group used by the terminal device, in the resource selection window as the resource set A. A resource in set A can be denoted as R(x, y), where x and y indicate, Petition 870250083220, dated 09 / 16 / 2025, page 26 / 250 20 / 92 respectively, a position in the frequency domain and a position in the time domain of the feature. Furthermore, the initial number of features in set A is denoted as Mtatal.

[0068] The specific capture mode of the terminal device can be divided into two cases: a-1 and a-2.

[0069] In case a-1, if the terminal device transmits data in slot a in the detection window and does not perform the capture, the terminal device can determine if slot a + q * Prxlg overlaps with resource R(x, y + j * Ptxlg). If they overlap, resource R(x, y) is excluded from the resource set A, where j = 0, 1, 2, 3... C-1, C is determined by a random value of the counter (counter) generated by the terminal device; Ptxlg is the number of logical slots after the terminal's resource reservation period Ptx is transformed into logical slots; Prxlg is the number of logical slots after Prx is transformed into logical slots, where Prx is a resource reservation period allowed in the resource grouping. If Prx < Tscal en - m <= Prxlg, then Q = [ Tscal / Prx], otherwise, Q = 1. Tscal is equal to a value after T2 is converted to milliseconds.

[0070] In case a-2, if the terminal device detects the first SCI transmitted in the PSCCH at E(v, m) in the interval m in the capture window, the terminal device measures the SL-RSRP of the PSCCH or the SL-RSRP of the PSSCH scheduled by the PSCCH (i.e., the SL-RSRP of the associated PSSCH transmitted in the same interval in which the PSCCH is transmitted).

[0071] If the measured SL-RSRP is greater than the SL-RSRP limit and the resource reservation between transport blocks Petition 870250083220, dated 09 / 16 / 2025, p. 27 / 250 21 / 92 (TBs) is activated in the resource grouping used by the terminal device, the terminal device will assume that the first side link control information of the same content is received in slot m + q * Prxlg, where Q = 1, 2, 3... Q, if Prx < Tscal and nm <= Prxlg, then Q = [ Tscal / Prx], otherwise, Q = 1; Tscal is equal to a value after T2 is transformed into milliseconds; Prxlg is the number of logical slots after Prx is converted into logical slots, where Prx is the resource reservation period indicated by “resource reservation period” in the first side link control information transmitted in the PSCCH detected by the terminal device.The terminal device can determine whether a resource indicated by a time resource assignment field and a frequency resource assignment field in the first side-link control information received in slot m, or resources indicated by the time resource assignment fields and frequency resource assignment fields in parts Q of the first side-link control information that is assumed to be received, overlap with the resource R(x, y + j * Ptxlg). If they overlap, the terminal device excludes the corresponding resource R(x, y) from set A. j = 0, 1, 2, 3... C1, C is determined by a random counter value generated by the terminal; Ptxlg is the number of logical slots after Ptx is transformed into logical slots, and Ptx is the resource reservation period determined by the terminal device performing the resource selection.

[0072] The RSRP limit mentioned above is determined based on the P1 priority carried in the PSCCH detected by the terminal device and the P1 priority of Petition 870250083220, dated 09 / 16 / 2025, page 28 / 250 22 / 92 data to be transmitted by the terminal device. The resource group configuration used by the terminal device may include an SL-RSRP threshold table, and the SL-RSRP threshold table includes SL-RSRP thresholds corresponding to all priority combinations. The resource group configuration may be network-configured or pre-configured. If the remaining resources in resource set A after resource deletion are less than Mtotal * X%, the terminal device may increase the SL-RSRP threshold by 3 dB and re-perform operation a, and the possible values ​​of X may be {20, 35, 50}. The resource group configuration used by the terminal device includes a matching relationship between priorities and possible values ​​of X, and the terminal device may determine the value of X according to the priority of the data to be transmitted and the matching relationship.

[0073] The physical layer of the terminal device may report feature set A after feature deletion as the candidate feature set for the upper layer, i.e., a terminal media access control (MAC) layer.

[0074] Operation b: the upper layer (such as the MAC layer) randomly selects a resource from the set of reported candidate resources to transmit the data. That is, the terminal device randomly selects the resource from the set of candidate resources to transmit the data.

[0075] Note that the RSRP limit mentioned above is determined based on the P1 priority carried in the PSCCH detected by the terminal device and the P1 priority. Petition 870250083220, dated 09 / 16 / 2025, page 29 / 250 23 / 92 of the data to be transmitted by the terminal device.

[0076] Furthermore, whether the terminal device compares the measured PSCCH-RSRP or the PSCCH-scheduled PSCCH-RSRP with the SL-RSRP threshold depends on the resource group configuration used by the terminal device. The resource group configuration can be network-configured or pre-configured.

[0077] Note that the possible X% values ​​above can be {20%, 35%, 50%}. The resource group configuration used by the terminal device includes a matching relationship between priorities and possible values, and the terminal device can determine the X% value according to the priority of the data to be transmitted and the matching relationship. The resource group configuration can be network-configured or pre-configured. SIDE LINK COMMUNICATION DATA TRANSMISSION MODE

[0078] Some side-link communication systems (such as long-term vehicle-to-everything evolution (LTEV2X)) support a broadcast-based data transmission mode (hereinafter referred to as broadcast transmission). For broadcast transmission, the receiving terminal can be a terminal device around the transmitting terminal. Taking Figure 6 as an example, terminal device 1 is a transmitting terminal, and the receiving terminal corresponding to the transmitting terminal can be any terminal device around terminal device 1, and could be, for example, terminal device 2 to terminal device 6 in Figure 6.

[0079] In addition to broadcast transmission, some communication systems support a mode of transmission of Petition 870250083220, dated 09 / 16 / 2025, page 30 / 250 24 / 92 data based on point-to-point broadcasting (hereinafter referred to as point-to-point broadcast transmission) and / or a data transmission mode based on selective broadcasting (hereinafter referred to as selective broadcast transmission). For example, the new radio vehicle for everything (NR-V2X) is expected to support autonomous driving. Autonomous driving imposes higher requirements for data interaction between vehicles. For example, data interaction between vehicles demands higher throughput, lower latency, greater reliability, a greater coverage range, and a more flexible resource allocation mode. Therefore, to improve the performance of data interaction between vehicles, NR-V2X introduces point-to-point broadcast transmission and selective broadcast transmission.

[0080] For point-to-point broadcast transmission, the receiving terminal usually has only one terminal device. Taking Figure 7 as an example, point-to-point broadcast transmission is performed between terminal device 1 and terminal device 2. Terminal device 1 can be a transmitting terminal, and terminal device 2 can be a receiving terminal, or terminal device 1 can be the receiving terminal, and terminal device 2 can be the transmitting terminal.

[0081] For selective broadcast transmission, receiving terminals can be terminal devices within a communication group, or receiving terminals can be terminal devices within a given transmission distance. Taking Figure 8 as an example, terminal device 1, terminal device 2, terminal device 3, and terminal device 4 constitute a communication group. If terminal device 1 transmits data, Petition 870250083220, dated 09 / 16 / 2025, page 31 / 250 25 / 92 other terminal devices (terminal device 2 to terminal device 4) in the group can all be receiving terminals. UNLICENSED SPECTRUM

[0082] Unlicensed spectrum is spectrum divided among countries and regions and used for wireless device communication. Unlicensed spectrum is generally considered shared spectrum. In other words, communication devices on the same communication system or on different communication systems can use the spectrum as long as they meet the regulatory requirements established by the countries or regions regarding this spectrum, and do not need to apply for exclusive spectrum authorization from the government.

[0083] Some countries or regions have stipulated the regulatory requirements that must be met when using unlicensed spectrum, to ensure that various communication devices (or communication systems) using unlicensed spectrum coexist amicably within the spectrum. For example, communication devices follow the LBT principle. In LBT, the communication device needs to perform channel capture before transmitting a signal on an unlicensed spectrum channel. If the result of channel capture is that the channel is idle, the communication device may use the unlicensed spectrum channel for signal transmission; and if the result of channel capture is that the channel is busy, generally, the communication device may not be permitted to use the unlicensed spectrum channel for signal transmission. RELATIONSHIP BETWEEN RESOURCES

[0084] The resources involved in the modalities of Petition 870250083220, dated 09 / 16 / 2025, p. 32 / 250 26 / 92 present disclosure may include a channel, a set of resource blocks (RB), and a resource cluster. Referring to Figure 9, the relationship between these three types of resources is shown below.

[0085] In some modalities, a set of RBs may be associated with one or more resource groupings, or a resource grouping may be associated with one or more sets of RBs. The sets of RBs associated with different resource groupings may overlap, or the sets of RBs associated with different resource groupings may be different.

[0086] As illustrated in Figure 9, a set of RBs A can be associated with a resource cluster 1 and a resource cluster 2, and some of the resources in the set of RBs A belong to resources in resource cluster 1 and the other part of the resources in the set of RBs A belong to resources in resource cluster 2. A resource cluster 2 is associated with the set of RBs A and the set of RBs B, and some resources in the resource cluster A belong to the resources in the set of RBs A and the other part of the resources belong to the resources in the set of RBs B. In the scheme illustrated in Figure 9, both resource cluster 1 and resource cluster 2 include resources in the set of resources A.

[0087] In the scheme illustrated in Figure 9, the resources in resource cluster 1 and the resources in resource cluster 2 do not overlap. However, in some implementations, the resources in resource cluster 1 and the resources in resource cluster 2 may overlap.

[0088] A set of RBs may be associated with Petition 870250083220, dated 09 / 16 / 2025, page 33 / 250 27 / 92 one or more LBT channels. Taking Figure 9 as an example, the set of RBs A can be associated with channel 1 and channel 2, and the set of RBs B can be associated with channel 3 and channel 4. The channel can be the minimum granularity in the frequency domain to perform the LBT, therefore, the channel can also be called an LBT channel. NR IN UNLICENSED SPECTRUM (NR-U)

[0089] When the terminal device detects a consistent uplink LBT failure, the terminal device may take measures specified in the protocol. Terminal device LBT capture may be performed on a portion of the bandwidth (BWP) basis and based on all uplink transmissions within the BWP. When a consistent uplink LBT failure is detected in a secondary cell (SCell), the terminal device may report the LBT failure to the network device in a service cell different from the SCell in which the failure is detected. The terminal device may report the LBT failure via a medium access control element (MAC CE). The network device is either a master node (MN) or a secondary node (SN). MN is used for a master cell group (MCG) and SN is used for a secondary cell group (SCG).If no resource is available to transmit the MAC address, the terminal device may transmit a scheduling request (SR).

[0090] When an uplink consistent LBT failure is detected in the SpCell, the terminal device can switch to another uplink (UL) BWP configured with a random access channel (RACH) feature in the cell, initiate random access, and report the failure by Petition 870250083220, dated 09 / 16 / 2025, page 34 / 250 28 / 92 MAC CE middle. When multiple UL BWPs are available for switching, the terminal device can select one of the various UL BWPs based on its own implementation.

[0091] For a primary secondary cell (PSCell), if a consistent uplink LBT failure is detected on all UL BWPs configured with RACH capabilities, the terminal device can declare an SCG radio link failure (RLF) and report the failure to the MN via SCGFailureInformation.

[0092] For a primary cell (PCell), if the terminal device detects an uplink BWP failure in all UL BWPs with configured RACH capabilities, the terminal device may declare an RLF. SIDE LINK - UNLICENSED (SL-U)

[0093] In the NR-V2X system, the resource for the terminal device to perform side-link data transmission can be allocated by the network device (e.g., the resource allocation method in the first mode) or determined by the terminal device itself based on the result of resource capture (e.g., the resource selection method in the second mode), and these two forms of resource allocation can also be applied to the SLU scenario.

[0094] In the SL-U system, after the terminal device determines the side link transmission resource, the terminal device needs to perform LBT before data transmission. If LBT is successful, data transmission can be performed; otherwise, data may not be transmitted over the side link transmission resource. Petition 870250083220, dated 09 / 16 / 2025, page 35 / 250 29 / 92 lateral determined. If the LBT is unsuccessful, the terminal device may consider discarding the transmission or triggering a new resource selection, and so on.

[0095] Enhanced consideration for consistent LBT failure is introduced to allow the terminal device to operate correctly in unlicensed spectrum. The terminal device can determine consistent LBT failure and perform consistent LBT failure recovery at the MAC layer. For example, the terminal device can be configured with a maximum number of LBT failure indications and a timer; the maximum number of LBT failure indications and the timer can be used to determine whether to trigger consistent LBT failure. Every time the physical layer (or physical layer entity) reports an LBT failure indication to the MAC layer (or MAC layer entity), the MAC layer needs to reset the timer and trigger the timer to initiate. When the number of LBT failure indications consistently reported by the physical layer exceeds the configured maximum number, the MAC layer can trigger a consistent LBT failure procedure.On the other hand, if the MAC layer does not receive any indication of an LBT failure reported by the physical layer until the timer expires, the MAC layer may reset the counter and the timer.

[0096] Consistent LBT failure may also be referred to as a continuous LBT failure, a continuous LBT failure, or something similar, and this name is not specifically limited in the embodiments of the present disclosure.

[0097] However, at the moment, it is only mentioned in the protocol that a consistent LBT failure can be triggered, and there is no specific rule related to Petition 870250083220, dated 09 / 16 / 2025, p. 36 / 250 30 / 92 details of consistent LBT failure.

[0098] Therefore, a method for wireless communication and an apparatus are provided in the modalities of the present disclosure, the information related to the granularity of the resource is considered when detecting the consistent LBT failure and, furthermore, the policy related to consistent LBT is determined. Therefore, a specific solution is provided for the terminal device to perform the operations related to the consistent LBT failure.

[0099] The method for wireless communication provided in one embodiment of the disclosure is described in detail with reference to Figure 10 below.

[00100] As illustrated in Figure 10, in operation S1010, a terminal device determines a first policy related to a consistent LBT failure.

[00101] The terminal device in the embodiment of the present disclosure may be a terminal device that performs side-link communication.

[00102] In some modalities, the capture of consistent LBT faults may be related to a granularity of resources. The granularity of the resource may include a set of RBs and / or a grouping of resources. For example, the terminal device may determine whether the set of RBs encounters the consistent LBT fault, or the terminal device may determine whether the grouping of resources encounters the consistent LBT fault.

[00103] In some modalities, the first policy may include one or more of the following: a resource switching policy, a second policy, and a third policy. The second policy may be related to Petition 870250083220, dated 09 / 16 / 2025, p. 37 / 250 31 / 92 cancellation of a triggered consistent LBT fault (a consistent LBT fault state or a consistent LBT fault ID), and the third policy may be related to the determination of the consistent LBT fault.

[00104] The third policy is presented below, firstly.

[00105] In some embodiments, the terminal device may detect the RB set to determine if the RB set encounters a consistent LBT fault, or the terminal device may detect the resource cluster to determine if the resource cluster encounters a consistent LBT fault. The fact that the RB set encounters a consistent LBT fault can also be understood as the consistent LBT fault occurs in the RB set, and the fact that the resource cluster encounters a consistent LBT fault can also be understood as the consistent LBT fault occurs in the resource cluster. Examples are given below.

[00106] In some embodiments, the third policy may include: determining that a first set of RBs encounters consistent LBT failure if multiple LBT failures occurring in a first set of RBs reach a first predefined threshold within a first predefined duration. The third policy may be a policy to determine whether the set of RBs encounters consistent LBT failure. The first predefined duration and / or a first predefined threshold may be indicated by the network device to the terminal device, or indicated by another terminal device to the terminal device, or determined by the terminal device itself, or predefined in the protocol. Petition 870250083220, dated 09 / 16 / 2025, p. 38 / 250 32 / 92

[00107] In some embodiments, whether the first set of RBs encounters an LBT fault can be determined by the physical layer of the terminal device, and the number of LBT faults occurring in the first set of RBs can be recorded by the MAC layer of the terminal device. The physical layer of the terminal device can report to the MAC layer of the terminal device when the first set of RBs encounters the LBT fault, and then the MAC layer of the terminal device records the number of LBT faults that occurred in the first set of RBs. The process by which the terminal device determines the likelihood of the first set of RBs encountering a consistent LBT fault will be described in detail below.

[00108] When the MAC layer receives information indicating that the first set of RBs encounters the LBT fault indicated by the physical layer, and if a first timer corresponding to the first set of RBs is not started, the MAC layer may start the first timer. The first timer may also be referred to as an LBT fault timer. If the first timer is started, the first counter corresponding to the first set of RBs will be incremented by 1. The first counter may also be referred to as an LBT fault counter. The MAC layer triggers the new resource selection, which is triggered due to the LBT fault, and the newly selected resource may be a resource in the current set of RBs (i.e., the set of RBs is not switched).Before the first timer expires, if the value recorded by the first counter is greater than or equal to a predefined first limit, it can be determined that a consistent LBT failure occurs. Petition 870250083220, dated 09 / 16 / 2025, p. 39 / 250 33 / 92 first set of RBs. If the value recorded by the first counter is less than the first preset limit when the first timer expires, the first counter will be set to zero.

[00109] In some modes, if the first set of RBs encounters the consistent LBT fault, the MAC layer may indicate the consistent LBT fault and / or indicate the set of RBs that encounters the consistent LBT fault to the physical layer. If the MAC layer indicates the consistent LBT fault to the physical layer, the physical layer may determine the set of RBs that encounters the consistent LBT fault according to the previously detected set of RBs.

[00110] However, in some embodiments, the physical layer can also determine whether the set of RBs encounters consistent LBT faults on its own. The physical layer can also maintain the timer and counter on its own and record the number of LBT faults that occur in the set of RBs in order to determine whether the set of RBs encounters consistent LBT faults.

[00111] In some embodiments, the third policy includes: determining that a first resource cluster encounters consistent LBT failure if a number of LBT failures occurring in a set of RBs associated with the first resource cluster reach a second predefined threshold within a second predefined duration. The third policy may be a policy to determine whether the resource cluster encounters consistent LBT failure. The second predefined duration and / or a second predefined threshold may be indicated by the network device to Petition 870250083220, dated 09 / 16 / 2025, page 40 / 250 34 / 92 terminal device, or indicated by another terminal device to the terminal device, or determined by the terminal device itself, or predefined in the protocol.

[00112] The set of RBs associated with the first resource grouping may include one or more sets of RBs. In some implementations, the set of RBs associated with the first resource grouping may mean that some or all of the resources in the set of RBs belong to resources in the first resource grouping.

[00113] In some embodiments, the likelihood of the set of RBs associated with the first resource cluster encountering an LBT fault can be determined by the physical layer of the terminal device, and the number of LBT faults occurring in the first resource cluster can be logged by the MAC layer of the terminal device. The physical layer of the terminal device can report to the MAC layer of the terminal device when the set of RBs associated with the first resource cluster encounters an LBT fault, and then the MAC layer of the terminal device logs the number of LBT faults that occurred in the set of RBs associated with the first resource cluster. The process by which the terminal device determines the likelihood of the first resource cluster encountering a consistent LBT fault will be described in detail below.

[00114] When the MAC layer receives information indicating that the set of RBs associated with the first resource cluster encounters the LBT fault indicated by the physical layer, if a second timer corresponding to the first resource cluster is not started, the MAC layer may start the second timer. The second Petition 870250083220, dated 09 / 16 / 2025, page 41 / 250 The 35 / 92 timer can also be referred to as an LBT failure timer. If the second timer is started, the second counter corresponding to the first resource grouping will be incremented by 1. The second counter can also be referred to as an LBT failure counter. The MAC layer triggers the new resource selection, which is triggered due to the LBT failure. Before the second timer expires, if the value recorded by the second counter is greater than or equal to a predefined second threshold, it can be determined that the consistent LBT failure occurs in the first resource grouping. If the value recorded by the second counter is less than the predefined second threshold when the second timer expires, the second counter will be set to zero.

[00115] However, in some embodiments, the physical layer can also determine whether the resource cluster encounters consistent LBT failure on its own. The physical layer can also maintain the timer and counter on its own and record the number of LBT failures that occur in the set of RBs associated with the resource cluster, in order to determine whether the resource cluster encounters consistent LBT failure.

[00116] In some embodiments, the fact that the set of RBs associated with the first resource cluster encounters the LBT fault may mean that any of the sets of RBs associated with the first resource cluster encounter the LBT fault, or one or more sets of RBs associated with the first resource cluster encounter the LBT fault. For example, the physical layer performs LBT fault capture on set of RBs a for the first time, and if the LBT fault on set of RBs a is detected, the physical layer indicates the fault. Petition 870250083220, dated 09 / 16 / 2025, p. 42 / 250 36 / 92 of LBT to the MAC layer, and the MAC layer increments the second counter by 1. When the LBT fault capture is performed a second time, the physical layer may detect it in RB set a or RB set b. Assuming the physical layer detects it in RB set b, and detects that RB set b encounters the LBT fault, the physical layer indicates the LBT fault to the MAC. The MAC layer may increment the second counter by 1. In other words, the second counter may not distinguish the RB set that encounters the LBT fault, but it may count uniformly for the RB sets corresponding to the first resource grouping.

[00117] In some modes, if the first resource cluster encounters the consistent LBT fault, the MAC layer may indicate the consistent LBT fault and / or indicate the resource cluster that encounters the consistent LBT fault to the physical layer. If the MAC layer indicates the consistent LBT fault to the physical layer, the physical layer may determine the resource cluster that encounters the consistent LBT fault based on the resource cluster associated with the previously detected RB set.

[00118] The method of determining the likelihood of the set of RBs encountering the consistent LBT fault is not limited in the embodiments of the present disclosure. In some implementations, if the set of RBs is associated with one channel, the set of RBs will be determined to encounter the LBT fault when the channel encounters the LBT fault. In other implementations, if a set of RBs is associated with multiple channels, whether the set of RBs encounters the LBT fault is related to the second piece of information. The second piece of information may include one or more of the following: all channels Petition 870250083220, dated 09 / 16 / 2025, p. 43 / 250 37 / 92 associated with the RB encounter the LBT fault; at least one channel related to the RB set encounters the LBT fault; and a channel in which a data transmission resource is located encounters the LBT fault. The data transmission resource may be a resource required by the terminal device to transmit data, or a resource selected by the terminal device, or a resource scheduled by the network device, or similar. The channel in which the data transmission resource is located may be one or more of the channels associated with the RB set. The above channel may also be called the LBT channel.

[00119] For example, if a set of RBs is associated with multiple channels, the terminal device (or the physical layer of the terminal device) may determine that the set of RBs encounters the LBT fault when the LBT fault occurs in all of the multiple channels. As another example, if a set of RBs is associated with multiple channels, the terminal device (or the physical layer of the terminal device) determines that the set of RBs encounters the LBT fault when the LBT fault occurs in at least one of the multiple channels. That is, as long as the LBT fault occurs in any of the multiple channels, the terminal device can determine that the set of RBs encounters the LBT fault. However, in some implementations, the terminal device may determine that the set of RBs encounters the LBT fault when the LBT fault occurs in a predefined number of channels across the multiple channels.As another example, if the set of RBs is associated with multiple channels, the terminal device (or the physical layer of the terminal device) determines that the set of RBs encounters the LBT fault when the LBT fault occurs on channel no. Petition 870250083220, dated 09 / 16 / 2025, p. 44 / 250 38 / 92 where is the data transmission resource located?

[00120] The channel associated with the set of RBs is not specifically limited in the embodiments of this disclosure. For example, some or all of the resources in the channel associated with the set of RBs belong to the resources in the set of RBs.

[00121] In some implementations, the second piece of information relates to the possibility of the terminal device being configured with a guard band. The guard band can be a protection strip between two channels. For example, if the terminal device is configured with a guard band, the second piece of information might include that all channels associated with the set of RBs encounter the LBT fault. As another example, if the terminal device is not configured with a guard band, the second piece of information might include that at least one channel associated with the set of RBs encounters the LBT fault. RESOURCE SWITCHING POLICY

[00122] In some implementations, if the terminal device encounters a consistent LBT failure, the terminal device may perform resource switching to ensure the terminal device's transmission performance. The terminal device may perform resource switching based on the resource switching policy. The resource switching policy may also be referred to by other policies, i.e., the resource switching policy may be replaced by other terms, which are not specifically limited in the embodiments of the present disclosure. The resource switching policy is described in detail below. Petition 870250083220, dated 09 / 16 / 2025, page 45 / 250 39 / 92

[00123] In one example, the resource switching policy may include one or more of the following: switching a resource grouping, switching a set of RBs, and switching a time-frequency resource. For example, the terminal device may switch the set of RBs when the set of RBs encounters an LBT fault, for example, the terminal device may switch from a first set of RBs to a second set of RBs. As another example, the terminal device may switch the resource grouping when the set of RBs encounters a consistent LBT fault, for example, the terminal device may switch from a first resource grouping to a second resource grouping. The first resource grouping may be a resource grouping associated with the set of RBs that encounters the consistent LBT fault. The second resource grouping is different from the first resource grouping.In some implementations, the second resource grouping may be associated with the set of RBs that encounters the consistent LBT fault, or it may not be associated with the set of RBs that encounters the consistent LBT fault. As another example, the terminal device may switch the time-frequency resource when the set of RBs encounters the consistent LBT fault; for example, the terminal device may switch from a first time-frequency resource to a second time-frequency resource. The first time-frequency resource may be a time-frequency resource associated with the set of RBs that encounters the consistent LBT fault; for example, the first time-frequency resource may be a resource in the set of RBs that encounters the consistent LBT fault. The second time-frequency resource may be a different resource from resource no. Petition 870250083220, dated 09 / 16 / 2025, p. 46 / 250 40 / 92 set of RBs that encounter consistent LBT fault. For example, the first time-frequency resource is a resource in the first set of RBs, the second time-frequency resource is a resource in the second set of RBs, and the first set of RBs is the set of RBs that encounters consistent LBT fault. The terminal device (or the terminal device's MAC layer) can select a resource in the set of RBs that is not marked as encountering consistent LBT fault when selecting the time-frequency resource. The resource switching policy mentioned above can be a proposed policy for the situation where the set of RBs encounters consistent LBT fault.

[00124] As another example, the resource switching policy may include one or more of the following: switching a resource grouping and switching a time-frequency resource. For example, the terminal device may switch the resource grouping when the resource grouping encounters a consistent LBT failure, for example, the terminal device may switch from a first resource grouping to a second resource grouping. As another example, the terminal device may switch the time-frequency resource when the resource grouping encounters a consistent LBT failure, for example, the terminal device may switch from a first time-frequency resource to a second time-frequency resource.The first time-frequency resource could be a time-frequency resource associated with the resource cluster that finds the consistent LBT fault; for example, the first time-frequency resource could be a resource in the resource cluster that finds the consistent LBT fault. The second resource... Petition 870250083220, dated 09 / 16 / 2025, p. 47 / 250 41 / 92 time-frequency can be a different resource from the resource in the resource cluster that encounters the consistent LBT fault. For example, the first time-frequency resource is a resource in the first resource cluster, the second time-frequency resource is a resource in the second resource cluster, and the first resource cluster is the resource cluster that encounters the consistent LBT fault. The terminal device (or the terminal device's MAC layer) can select a resource in the RB cluster that is not marked as encountering the consistent LBT fault when selecting the time-frequency resource. The resource switching policy mentioned above can be a proposed policy for the situation where the resource cluster encounters the consistent LBT fault.

[00125] In some embodiments, after the terminal device switches to a new resource grouping, the new resource grouping may still be associated with the set of RBs that encounters the consistent LBT fault.

[00126] Conditions for the terminal device to switch the feature will be described below.

[00127] If the resource switching policy includes resource pool switching, the terminal device may switch the resource pool when the first condition is met. The first condition may relate to one or more of the following: the possibility of the RB pool encountering a consistent LBT fault; and a data transmission requirement. The data transmission requirement may refer to some requirements related to the transmission resource in the protocol. For example, the data transmission requirement may include an XRD requirement and / or a Petition 870250083220, dated 09 / 16 / 2025, p. 48 / 250 42 / 92 minimum time interval requirement, etc.

[00128] In some modes, the consistent LBT failure described above may be the consistent LBT failure that was triggered but not cleared.

[00129] In some modes, the terminal device switches resource grouping when the set of RBs encounters a consistent LBT failure.

[00130] For example, the first condition may include that one or more RB sets associated with the current resource grouping encounter a consistent LBT failure, i.e., the terminal device switches the resource grouping when one or more RB sets associated with the current resource grouping encounter a consistent LBT failure. As another example, the first condition may include that all RB sets associated with the current resource grouping encounter a consistent LBT failure, i.e., the terminal device switches the resource grouping when all RB sets associated with the current resource grouping encounter a consistent LBT failure.As another example, the first condition might include a predefined number of RB sets associated with the current resource grouping encountering a consistent LBT fault; that is, the terminal device switches resource groupings when the predefined number of RB sets associated with the current resource grouping encounters a consistent LBT fault. The predefined number might be specified by the network device or it might also be predefined.

[00131] In some implementations, the first condition may include that the number of remaining resources in the resource grouping is less than or equal to a limit. Petition 870250083220, dated 09 / 16 / 2025, page 49 / 250 43 / 92 predefined. The terminal device can switch resource grouping when the number of remaining resources in the resource grouping is less than or equal to the predefined limit, i.e., no resource in the resource grouping meeting the condition can be selected. The remaining resources belong to resources that do not encounter any consistent LBT faults and / or resources that meet the data transmission requirement. The remaining resources may include time-frequency resources and / or RB resources. That is, a granularity for dividing the resources in the modalities of this disclosure may be a time-frequency resource and / or a set of RBs.

[00132] For example, if no resource in the resource grouping that meets the data transmission requirement can be selected other than the resource associated with the set of RBs that encounters the consistent LBT fault, the terminal device may switch the resource grouping.

[00133] Resource grouping switching can be determined by the MAC layer. When the first condition is met, the MAC layer can trigger resource grouping switching or a new resource selection. The MAC layer can indicate the switched resource grouping to the physical layer. The switched resource grouping is different from the resource grouping before switching.

[00134] If the number of remaining resources in the resource grouping is greater than the predefined limit, that is, a sufficient number of resources in the resource grouping can be selected, the MAC layer may transmit the selected resources and the corresponding data packets to be transmitted (as the MAC protocol data unit). Petition 870250083220, dated 09 / 16 / 2025, page 50 / 250 44 / 92 (PDU)) for the physical layer.

[00135] In some embodiments, if the resource switching policy includes switching the RB set, the terminal device may switch the RB set when a current RB set encounters a consistent LBT failure. The switching policy above is applicable to the situation where a consistent LBT failure occurs in the RB set.

[00136] In some embodiments, if the resource switching policy includes time-frequency resource switching, the terminal device may switch the time-frequency resource when the current RB set encounters a consistent LBT failure. The above switching policy is applicable to the situation where a consistent LBT failure occurs in the RB set.

[00137] In some embodiments, if the resource switching policy includes resource grouping switching, the terminal device may switch the resource grouping when the current resource grouping encounters a consistent LBT failure. The switching policy above applies to the situation where a consistent LBT failure occurs in the resource grouping.

[00138] In some embodiments, if the resource switching policy includes time-frequency resource switching, the terminal device may switch the time-frequency resource when the current resource grouping encounters a consistent LBT failure. The above switching policy applies to the situation where a consistent LBT failure occurs in the resource grouping.

[00139] The time-frequency resource can be a time-frequency resource in the set of RBs or a resource Petition 870250083220, dated 09 / 16 / 2025, page 51 / 250 45 / 92 time-frequency resource grouping. There are many ways to divide time-frequency resources in the time domain and frequency domain, which is not specifically limited in the modalities of the present disclosure. For example, a time-domain time-frequency resource division granularity might include a symbol, a slot, a subframe, or something similar. A frequency-domain time-frequency resource division granularity might include a channel, a subchannel, a RB, a physical resource block (PRB), or similar.

[00140] The second policy is presented below.

[00141] In some embodiments, the second policy may include: performing consistent LBT fault cancellation, such as canceling the consistent LBT fault triggered from a first resource, when a second condition is met. The second condition may include one or more of the following: a first operation is performed by the terminal device, the first operation being related to resource switching; and a consistent LBT fault report is transmitted by the terminal device.

[00142] For example, the terminal device can perform consistent LBT fault cancellation when the first operation is performed. As another example, the terminal device can perform consistent LBT fault cancellation when the consistent LBT fault report is transmitted by the terminal device. As yet another example, the terminal device can perform consistent LBT fault cancellation when the first operation is performed and the consistent LBT fault report is transmitted.

[00143] In some implementations, the operation in Petition 870250083220, dated 09 / 16 / 2025, page 52 / 250 46 / 92 that the terminal device transmits the consistent LBT failure report may include the terminal device transmitting the consistent LBT failure report to the network device and / or the terminal device transmitting the consistent LBT failure report to the pairing device.

[00144] The first operation is not specifically limited in the embodiments of this disclosure. For example, the operation may include resource switching being performed. As another example, the operation may include the LBT on the switched resource being successful. As another example, the operation may include data being successfully transmitted on the switched resource. As another example, the first operation may include an RLF for a point-to-point broadcast link being triggered. It should be noted that the operations described above may be used separately or in combination with each other, which is not specifically limited in the embodiments of this disclosure.

[00145] A condition under which the terminal device performs consistent LBT fault cancellation will be described below by way of example.

[00146] For example, the terminal device can perform consistent LBT fault cancellation when resource switching is performed and data is successfully transmitted on the switched resource. As another example, the terminal device can perform consistent LBT fault cancellation when resource switching is performed and the LBT on the switched resource is successful. As another example, the terminal device can perform consistent LBT fault cancellation when the RLF for the point-broadcast link Petition 870250083220, dated 09 / 16 / 2025, page 53 / 250 47 / 92 point-to-point is triggered. As another example, the terminal device can perform consistent LBT fault cancellation when resource switching is performed, data is successfully transmitted on the switched resource, and the consistent LBT fault report is transmitted by the terminal device. As another example, the terminal device can perform consistent LBT fault cancellation when resource switching is performed, LBT on the switched resource is successful, and the consistent LBT fault report is transmitted by the terminal device. As another example, the terminal device can perform consistent LBT fault cancellation when the RLF for the point-to-point broadcast link is triggered and the consistent LBT fault report is transmitted by the terminal device.

[00147] The RLF triggering operation for the point-to-point broadcast link may include one or more of the following: LBT failure on the switched destination resource; consistent LBT failure is triggered for the switched destination resource; and data is not successfully transmitted on the switched destination resource. The destination resource may be all configured resources or a predefined number of resources. Configured resources may be resources configured by the network device. The destination resource may include a grouping of resources and / or a set of RBs.

[00148] For example, if the terminal device has traversed all configured resource groupings or RB sets, but no LBTs are successful or no data is successfully transmitted, the RLF for the point-to-point broadcast link will be triggered. As another example, if the terminal device has performed N switches of Petition 870250083220, dated 09 / 16 / 2025, page 54 / 250 48 / 92 resources, but no LBT is successful or no data is successfully transmitted, the RLF for the point-to-point broadcast link is triggered. The number N above can be configured by the network device or predefined in the protocol. The resource switching mentioned above may include one or more of: resource grouping switching, RB pool switching, and time-frequency resource switching. As another example, if consistent LBT failure is triggered for all configured resources, or consistent LBT failure is triggered for N of the configured resources, the RLF for the point-to-point broadcast link is triggered.

[00149] The first resource is not specifically limited to the embodiments of the present disclosure. For example, the first resource may include one or more of the following: a set of RBs associated with one or more resource groupings prior to switching; a set of RBs prior to switching; and a resource grouping prior to switching.

[00150] In some embodiments, the first resource may include the set of RBs associated with one or more resource clusters prior to switching. For example, if the set of RBs encounters the consistent LBT fault and the terminal device switches the resource cluster, the first resource may include the set of RBs associated with one or more resource clusters prior to switching. One or more resource clusters may be one or more resource clusters associated with the set of RBs that encounters the consistent LBT fault.

[00151] In some modes, the first resource may include one or more sets of RBs before switching. For example, if the set of RBs encounters the LBT fault. Petition 870250083220, dated 09 / 16 / 2025, p. 55 / 250 49 / 92 consistent and the terminal device switching the RB set, the first feature may include one or more RB sets before switching. One or more RB sets may be one or more RB sets that encounter the consistent LBT fault.

[00152] In some embodiments, the first resource may include one or more resource clusters prior to switching. For example, if the resource cluster encounters the consistent LBT fault and the terminal device switches the resource cluster, the first resource may include one or more resource clusters prior to switching. One or more resource clusters may be one or more resource clusters that encounter the consistent LBT fault.

[00153] In some embodiments, if the second condition includes that the RLF for the point-to-point broadcast link is triggered, the first resource may include the destination resource mentioned above.

[00154] In some embodiments, if the first condition includes that the consistent LBT failure report is transmitted by the terminal device, the first resource will include a resource corresponding to the transmitted consistent LBT failure.

[00155] A specific situation in which the terminal device performs the cancellation of the triggered consistent LBT fault will be described below as an example.

[00156] In some embodiments, the terminal device may cancel the consistent LBT fault in the set of RBs associated with one or more resource groupings before switching when resource grouping switching is performed or a new resource selection is triggered. Alternatively, the terminal device may cancel the fault Petition 870250083220, dated 09 / 16 / 2025, page 56 / 250 50 / 92 of consistent LBT in the set of RBs associated with one or more resource clusters before switching when the resource cluster switching is performed and the LBT in the new resource cluster is successful or the data is successfully transmitted in the new resource cluster.

[00157] In some embodiments, the terminal device may trigger the RLF for the point-to-point broadcast link and cancel the consistent LBT failure on the set of RBs associated with all configured resource clusters when no LBT in all resource clusters is successful or no data is successfully transmitted in all resource clusters or the consistent LBT failure occurs in all resource clusters. Alternatively, the terminal device may trigger the RLF for the point-to-point broadcast link and cancel the consistent LBT failure on the set of RBs associated with a predefined number of resource clusters when no LBT in the predefined number of resource clusters is successful or no data is successfully transmitted in the predefined number of resource clusters.

[00158] In some embodiments, the terminal device may clear the consistent LBT fault in one or more RB sets before switching when the RB set encounters the consistent LBT fault and the RB set is switched or a new resource selection is triggered. Alternatively, the terminal device may clear the consistent LBT fault in one or more RB sets before switching when the RB set is switched and the LBT in the switched RB set is successful or data is successfully transmitted in the switched RB set. Petition 870250083220, dated 09 / 16 / 2025, p. 57 / 250 51 / 92

[00159] In some embodiments, the terminal device may trigger the RLF for the point-to-point broadcast link and cancel the consistent LBT failure on all RB sets when the RB set encounters the consistent LBT failure and no LBT on all configured RB sets is successful or no data is successfully transmitted on all configured RB sets or the consistent LBT failure occurs on all configured RB sets. Alternatively, the terminal device may trigger the RLF for the point-to-point broadcast link and cancel the consistent LBT failure on a predefined number of RB sets when no LBT on the predefined number of RB sets is successful or no data is successfully transmitted on the predefined number of RB sets.

[00160] In some embodiments, the terminal device may clear the consistent LBT failure in the set of RBs associated with one or more resource clusters before switching when the resource cluster encounters the consistent LBT failure and the resource cluster is switched or a new resource selection is triggered. Alternatively, the terminal device may clear the consistent LBT failure in the set of RBs associated with one or more resource clusters before switching when the resource cluster is switched and the LBT in the new resource cluster is successful or data is successfully transmitted in the new resource cluster.

[00161] In some embodiments, the terminal device may trigger the RLF for the point-to-point broadcast link and cancel the consistent LBT failure across all resource pools when the resource pool Petition 870250083220, dated 09 / 16 / 2025, p. 58 / 250 52 / 92 encounters a consistent LBT failure and no LBT is successful in all configured resource clusters, or no data is successfully transmitted in all configured resource clusters, or a consistent LBT failure occurs in all configured resource clusters. Alternatively, the terminal device can trigger the RLF for the point-to-point broadcast link and cancel the consistent LBT failure in a predefined number of resource clusters when no LBT in the predefined number of resource clusters is successful or no data is successfully transmitted in the predefined number of resource clusters.

[00162] The aforementioned operation of canceling a consistent LBT fault can be performed by the MAC layer. In some embodiments, the MAC layer can transmit first indication information to the physical layer, with the first indication information configured to indicate the cancellation of a consistent LBT fault and / or a resource for which the consistent LBT fault is canceled. For example, the first indication information can be used to indicate the cancellation of a consistent LBT fault, and the physical layer, after receiving the first indication information, can determine which resource has the consistent LBT fault status to be canceled according to the LBT fault indication previously reported to the MAC layer.As another example, the initial indication information can be configured to indicate the resource for which the consistent LBT failure is canceled; that is, the initial indication information can directly indicate the resource for which the consistent LBT failure status is canceled. Resource no. Petition 870250083220, dated 09 / 16 / 2025, page 59 / 250 53 / 92 this document may include the set of RBs and / or the grouping of resources. RESOURCE ALLOCATION

[00163] In some embodiments, the resource selected for data transmission from the terminal device is determined based on the information in the second indication. The selected resource may be, for example, a resource for data transmission. The second indication may indicate one or more of the following parameters: information about a target resource grouping, the information about a target resource grouping being determined based on consistent LBT failure-related information; and information related to a target RB set.

[00164] In some embodiments, secondary indication information may be transmitted from the MAC layer to the physical layer. For example, the MAC layer may indicate secondary indication information to the physical layer in a physical layer triggering process to perform resource selection. In some implementations, when the MAC layer indicates target resource grouping information to the physical layer, the MAC layer may consider information about the resource where consistent LBT failure occurs. In other implementations, the MAC layer may also directly indicate information related to the RB set to the physical layer.

[00165] In some modes, the target resource cluster may be associated with at least one set of RBs or resource cluster for which no consistent LBT fault is triggered. That is, at least one resource in the target resource cluster is an available resource. Petition 870250083220, dated 09 / 16 / 2025, p. 60 / 250 54 / 92 For example, at least one resource in the target resource grouping belongs to a resource in a set of RBs that does not encounter any consistent LBT failures.

[00166] In some modes, the target resource grouping includes at least one resource grouping for which no consistent LBT fault is triggered.

[00167] Note that, in addition to the scenarios described in the embodiments of this disclosure, information about the consistent LBT failure feature may also be considered for feature selection in the unlicensed frequency band triggered by other cases.

[00168] In some embodiments, the target RB set may include one or more of: a selected RB set; and an RB set that encounters the consistent LBT fault. In some implementations, the selected RB set may be a set of RBs selected based on the RB set or resource grouping that encounters the consistent LBT fault. For example, the selected RB set may not include the RB set that encounters the consistent LBT fault. As another example, the selected RB set may not include the RB set associated with the resource grouping that encounters the consistent LBT fault. The selected RB set above is applicable to the situation where the consistent LBT fault occurs in the RB set.

[00169] In some modes, the information in the second indication may indicate one or more of the following parameters: the target resource grouping information, the selected RB set information; and the Petition 870250083220, dated 09 / 16 / 2025, page 61 / 250 55 / 92 set of RBs that encounters the consistent LBT failure. The second indication above applies to the situation where the consistent LBT failure occurs in the set of RBs. The second indication may indicate one or more of the following parameters: the target resource grouping information, the selected set of RBs information. The second indication above applies to the situation where the consistent LBT failure occurs in the resource grouping.

[00170] In some embodiments, the information in the second indication may also include one or more of the following: information relating to data transmission, information on currently available channel occupation time (COT), information on received inter-EU cooperation, SL DRX information and similar information. Information relating to data transmission may include one or more of the following: a required resource size, a number of retransmissions, a priority and similar information. Information on available COT may include information relating to COT time, such as remaining duration, start time, end time and similar information.

[00171] The method for determining the selected resource above is described below. In some embodiments, the selected resource may be transmitted from the MAC layer to the physical layer. The selected resource may be determined by the MAC layer based on a second resource, and the second resource is determined by the physical layer through resource selection based on the information from the second indication.

[00172] In some modes, the physical layer can perform resource selection according to the second Petition 870250083220, dated 09 / 16 / 2025, page 62 / 250 56 / 92 indication information. When the physical layer performs resource selection, the physical layer can select a resource according to the resource acquisition method described above. In some implementations, the physical layer may exclude unavailable resources to obtain an available resource set A.

[00173] In some modes, the second resource may be determined based on one or more of the following resources: a resource in a target resource grouping, a resource in the selected RB set, an RB set excluding consistent LBT failure.

[00174] In some implementations, if the parameter indicated by the second indication information includes the target resource grouping information, set A may be a resource set obtained according to the target resource grouping. For example, the physical layer may perform resource capture on resources in the target resource grouping to obtain set A. If the parameter indicated by the second indication information includes the selected RB set, set A may be a resource set obtained according to the selected RB set. For example, the physical layer may perform resource capture on resources in the selected RB set to obtain set A. If the parameter indicated by the second indication information includes the RB set that encounters the consistent LBT fault, set A may be a resource set obtained excluding the RB set that encounters the consistent LBT fault.

[00175] The above modes can be used separately or in combination with each other. For example, the layer Petition 870250083220, dated 09 / 16 / 2025, page 63 / 250 57 / 92 Physical can perform resource capture on resources in the target resource grouping and exclude the set of RBs that encounters a consistent LBT fault, to obtain resource set A. For example, the physical layer can perform resource capture on resources in the selected set of RBs and exclude the set of RBs that encounters a consistent LBT fault, to obtain resource set A. The set of RBs that encounters a consistent LBT fault can be determined by the physical layer based on the previous LBT capture result or can be indicated by the second indication information.

[00176] In some embodiments, the physical layer may report the A-set of features to the MAC layer. The MAC layer may perform feature selection according to the A-set of features reported by the physical layer.

[00177] In some embodiments, the MAC layer can select a resource from resource set A; for example, the MAC layer can select a resource from the RB set that is not marked as encountering the consistent LBT fault. However, if the physical layer has excluded resources from the RB set that encounter the consistent LBT fault when determining resource set A, the MAC layer can directly select a resource from resource set A. Furthermore, as described above, if the MAC layer has the capacity to select sufficient resources from resource set A, the MAC layer can transmit the selected resources (which can also be called resources to be transmitted) and the corresponding data packets to be transmitted to the physical layer. If the MAC layer does not have the capacity to select sufficient resources from resource set A, it can transmit the selected resources (which can also be called resources to be transmitted) and the corresponding data packets to be transmitted to the physical layer. Petition 870250083220, dated 09 / 16 / 2025, page 64 / 250 58 / 92 resources A, which meet the condition, the MAC layer may trigger the switching of the resource grouping or a new resource selection. For example, the MAC layer may indicate the switched resource grouping to the physical layer. The physical layer may perform the new resource selection based on the switched resource grouping. The above operation may be applicable to the situation where consistent LBT failure occurs in the RB array and the terminal device switches the RB array.

[00178] In some embodiments, the MAC layer can select a resource in the A resource set, for example, the MAC layer can select a resource in the RB set that is not marked as encountering the consistent LBT fault. If the MAC layer has the capacity to select sufficient resources in the A resource set, the MAC layer can transmit the selected resources (which can also be called resources to be transmitted) and the corresponding data packets to be transmitted to the physical layer. The above operation may be applicable to the situation where the consistent LBT fault occurs in the RB set and the terminal device switches resource grouping.

[00179] In some embodiments, the MAC layer can select resources in resource pool A and can transmit the selected resources (which may also be called resources to be transmitted) and the corresponding data packets to be transmitted to the physical layer. The above operation may be applicable to the situation where consistent LBT failure occurs in resource pooling and the terminal device switches resource pooling. Petition 870250083220, dated 09 / 16 / 2025, page 65 / 250 59 / 92

[00180] Before transmitting the data packet to be transmitted, the physical layer may perform LBT capture on the resource to be transmitted as indicated by the MAC layer. If the LBT is successful, the physical layer transmits the data packet to be transmitted; and if the LBT fails, the LBT failure and / or the set of RBs on which the LBT fails are indicated to the MAC layer. Furthermore, as described above, the MAC layer may count and time the set of RBs that encounter the LBT failure according to the physical layer indication, to determine if a consistent LBT failure is triggered for the set of RBs.

[00181] In some modes, when the RB set encounters a consistent LBT failure, the MAC layer may trigger a new resource selection. For example, the MAC layer may indicate a resource grouping for the physical layer, and the resource grouping may be the same as the previous resource grouping (i.e., the newly selected resource is in another RB set available in the current resource grouping, the resource grouping is not switched) or it may be different from the previous resource grouping (i.e., the newly selected resource is in another RB set available in another resource grouping, the resource grouping is a switched resource grouping).

[00182] The new resource selection process may be a resource selection process triggered by LBT consistent on a single set of RBs. Resource selection may be resource selection performed on the current resource cluster (if there is still a set of RBs in the current resource cluster for which LBT failure occurred). Petition 870250083220, dated 09 / 16 / 2025, page 66 / 250 60 / 92 consistent (not triggered), or the resource selection may be resource selection performed in another resource grouping. The specific resource grouping in which resource selection is performed may be determined by the end-user implementation.

[00183] In some modes, when the RB set encounters a consistent LBT failure, the MAC layer may trigger a new resource selection. The MAC layer may indicate the new RB set to the physical layer, with the new RB set being a switched RB set.

[00184] Note that, in one embodiment of the present disclosure, the set of RBs that encounters the consistent LBT fault may be a set of RBs for which the consistent LBT fault is triggered but not canceled, and the resource cluster that encounters the consistent LBT fault may be a resource cluster for which the consistent LBT fault is triggered but not canceled.

[00185] Hereafter, the solutions to the modalities of the present disclosure will be described in detail with reference to three examples. It is noted that the following three examples are only for convenience of understanding and introduction to the present disclosure, and are not intended to limit the present disclosure. Furthermore, the following three examples may be used in combination with one another without conflict. FIRST EXAMPLE

[00186] Figure 11 illustrates a case where consistent LBT occurs across the RB set and the resource switching policy is switching the resource grouping. For example, when all resources in a resource grouping are marked as encountering consistent LBT failure, the Petition 870250083220, dated 09 / 16 / 2025, page 67 / 250 61 / 92 resource grouping is alternated.

[00187] Referring to Figure 11, in operation S1102, a MAC layer triggers feature selection or new feature selection. The MAC layer triggers a physical layer to perform the feature selection, and the MAC layer may transmit second indication information to the physical layer during the triggering.

[00188] The second indication information may indicate one or more of the following parameters: information related to data transmission, information on a currently available COT, information received from inter-EU cooperation (IUC), SL DRX information, information on a target resource grouping, information on a selected set of RBs, information on a set of RBs that encounters the consistent LBT failure, and so on. Information related to data transmission may include one or more of the following: a required resource size, a number of retransmissions, a priority, and the like. Information on the available COT may include information related to the COT's timing, such as remaining duration, start time, end time, and the like. Information on the target resource grouping may be determined based on the set of RBs that encounters the consistent LBT failure.The resource grouping selected by the MAC layer may need to be associated with at least one set of RBs for which no consistent LBT fault is triggered. The selected set of RBs may consider the set of RBs for which the consistent LBT fault is triggered, i.e., the selected set of RBs may exclude the set of RBs for which the consistent LBT fault is triggered but not canceled. Petition 870250083220, dated 09 / 16 / 2025, page 68 / 250 62 / 92

[00189] In operation S1104, the physical layer performs resource selection. The physical layer can perform resource selection according to the information from the second indication and exclude the unavailable resource to obtain an available resource set A.

[00190] If the information from the second indication points to a target resource grouping, resource set A can be obtained based on the resources in the target resource grouping. If the information from the second indication points to the selected RB set, resource set A can be obtained based on the resources in the selected RB set. If the information from the second indication points to a resource that encounters the consistent LBT fault, resource set A can be obtained by excluding the RB set that encounters the consistent LBT fault.

[00191] In operation S1106, the physical layer reports the A feature set to the MAC layer.

[00192] In operation S1108, the MAC layer performs resource selection according to the resource set A reported by the physical layer.

[00193] When performing resource selection, the MAC layer may consider the set of RBs for which the consistent LBT fault is triggered, but not canceled. Specifically, the MAC layer may select a resource (or referred to as a time-frequency resource) in the set of RBs that is not marked as encountering the consistent LBT fault. It can be understood that after the terminal device switches to a new resource grouping, the new resource grouping may still be associated with the set of RBs that encounters the consistent LBT fault, and in that case, Petition 870250083220, dated 09 / 16 / 2025, p. 69 / 250 63 / 92 also requires considering the set of RBs that encounter the consistent LBT failure when performing resource selection.

[00194] In operation S1110, the MAC layer determines the possibility that there are no resources available for selection. For example, the MAC layer can determine if sufficient resources that meet the condition are available for selection. If the MAC layer has the capacity to select sufficient resources that satisfy the condition, operation S1112 will be executed; if the MAC layer does not have the capacity to select sufficient resources that satisfy the condition, operations S1114 and S1116 will be performed.

[00195] In the S1112 operation, the MAC layer can transmit transmission-related information, such as the selected resource and the data packet to be transmitted (such as MAC PDU), to the physical layer.

[00196] In the S1114 operation, the physical layer can perform LBT capture on the resource selected by the MAC layer before data transmission. If the LBT is successful, the data is transmitted; if the LBT fails, the S1116 operation is executed.

[00197] In operation S1116, the physical layer transmits an LBT fault indication to the MAC layer. Taking RB array 1 as an example, the physical layer can transmit the LBT fault indication from RB array 1 to the MAC layer.

[00198] If the RB1 array is associated with multiple channels, the LBT fault indication for the RB1 array may be transmitted in at least one of the following cases: all channels encountering the LBT fault; at least one channel encountering the LBT fault; and one channel in which a resource Petition 870250083220, dated 09 / 16 / 2025, p. 70 / 250 64 / 92 for data transmission is located when encountering an LBT fault. The specific case for transmitting the LBT fault indication from RB1 array 1 depends on whether the terminal device is configured with a protection band. If the terminal device is configured with the protection band, the LBT fault indication from RB1 array 1 can be transmitted if all channels encounter the LBT fault. If the terminal device is not configured with the protection band, the LBT fault indication from RB1 array 1 can be transmitted if at least one channel encounters the LBT fault.

[00199] In operation S1118, after receiving the LBT fault indication from RB set 1, the MAC layer starts a timer for RB set 1 if the timer for RB set 1 is not started; and the MAC layer increments a counter for RB set 1 by 1 if the timer for RB set 1 is started.

[00200] In addition, the MAC layer can also trigger new feature selection. New feature selection is a new feature selection that is triggered by the LBT failure.

[00201] In operation S1120, when the timer for set RBs 1 expires, it is determined whether a counter value for set RBs 1 is greater than a predefined limit.

[00202] In operation S1122, if the counter value for set RBs 1 is greater than the predefined limit, it is determined that set RBs 1 encounters a consistent LBT fault.

[00203] The MAC layer can trigger a new selection. Petition 870250083220, dated 09 / 16 / 2025, page 71 / 250 65 / 92 of resources. For example, the process can return to operation S1102 for re-execution. The MAC layer can again indicate a resource grouping to the physical layer, the physical layer can be the previous resource grouping (i.e., the current resource grouping) or it can be a new resource grouping.

[00204] This new resource selection may be a resource selection triggered by a consistent LBT failure that occurs on a single set of RBs. If there is still a set of RBs, associated with the current resource grouping, for which the consistent LBT failure is not triggered, the resource selection may be performed on the current resource grouping or the resource selection may be performed on another resource grouping.

[00205] In operation S1124, when the timer for RB set 1 expires and if the counter value for RB set 1 does not reach the preset limit, the counter for RB set 1 is set to zero.

[00206] In operation S1126, the MAC layer can trigger a resource grouping switch or a new resource selection. For example, the process can return to operation S1102 for re-execution. The MAC layer can again indicate a resource grouping to the physical layer; the resource grouping is a switched resource grouping and is different from the previous resource grouping.

[00207] In operation S1128, after resource grouping is switched, the MAC layer may cancel the consistent LBT fault, in the set of RBs, which is triggered but not canceled.

[00208] If the new resource selection or the Petition 870250083220, dated 09 / 16 / 2025, page 72 / 250 If the 66 / 92 resource grouping switching is triggered and the LBT in the new resource grouping is successful, or the data is successfully transmitted in the new resource grouping, the terminal device may cancel the consistent LBT failure, in the set of RBs associated with one or more resource groupings before the switching, which is triggered but not canceled.

[00209] If the terminal device has traversed all configured resource pools but still does not successfully execute LBT or does not successfully transmit all data, the terminal device may trigger RLF for all point-to-point broadcast links and cancel all consistent LBT failures, on RB pools, that are triggered but not canceled.

[00210] If the terminal device has performed N switches (i.e., reaching the configured number), but still fails to successfully execute the LBT or does not successfully transmit all data, the terminal device may trigger the RLF for all point-to-point broadcast links and cancel all consistent LBT failures, in the RB sets, that are triggered but not canceled.

[00211] If the terminal device is in a connected state to the Radio Resource Control (RRC), the terminal device in the connected state may transmit a consistent LBT fault report, such as transmitting the consistent LBT fault report to the network device or the pairing device. Furthermore, when the terminal device transmits the consistent LBT fault report, the terminal device may also trigger a consistent LBT fault cancel operation. That is, Petition 870250083220, dated 09 / 16 / 2025, page 73 / 250 67 / 92 The terminal device can trigger the consistent LBT fault cancel operation when resource switching is performed, or it can trigger the consistent LBT fault cancel operation when the consistent LBT fault report is transmitted. Therefore, it is necessary to specify how the two consistent LBT fault cancel operations are performed.

[00212] Based on this, it is proposed that the terminal device may trigger the consistent LBT fault cancel operation only after performing the two above operations in an embodiment of the present disclosure. For example, for a consistent LBT fault triggered in the RB cluster, the terminal device may trigger the consistent LBT fault cancel operation only after transmitting the consistent LBT fault report to the RB cluster and performing resource cluster switching. Alternatively, the terminal device may trigger the consistent LBT fault cancel operation after performing either of the two above operations. For example, the terminal device may choose to transmit the consistent LBT fault report or switch resource clustering and trigger the consistent LBT fault cancel operation after the corresponding operation is achieved.

[00213] After triggering the consistent LBT fault cancellation operation, the MAC layer can indicate to the physical layer the cancellation of the consistent LBT fault or the set of RBs for which the consistent LBT fault is canceled. SECOND EXAMPLE Petition 870250083220, dated 09 / 16 / 2025, page 74 / 250 68 / 92

[00214] Figure 12 illustrates a case where consistent LBT occurs in the set of RBs and the resource switching policy is switching the set of RBs. For example, when some set of RBs is marked as encountering the consistent LBT failure, the set of RBs is switched.

[00215] Referring to Figure 12, in operation S1202, a MAC layer triggers feature selection or new feature selection. The MAC layer triggers a physical layer to perform the feature selection, and the MAC layer may transmit second indication information to the physical layer during the triggering.

[00216] The second indication may indicate one or more of the following parameters: information related to data transmission, information on a currently available COT, information received on inter-EU cooperation (IUC), information on SL DRX, information on a target resource pool, information on a selected RB pool, information on a RB pool encountering the consistent LBT failure. Information related to data transmission may include one or more of the following: a required resource size, a number of retransmissions, a priority, and the like. Information on the available COT pool may include information related to the COT pool time, such as remaining duration, start time, end time, and the like. Information on the target resource pool may be determined based on the RB pool encountering the consistent LBT failure.The resource grouping selected by the MAC layer may need to be associated with at least one set of RBs for which no consistent LBT fault is triggered. The selected set of RBs may... Petition 870250083220, dated 09 / 16 / 2025, page 75 / 250 69 / 92 consider the set of RBs for which the consistent LBT fault is triggered, i.e., the selected set of RBs may exclude the set of RBs for which the consistent LBT fault is triggered, but not canceled.

[00217] In operation S1204, the physical layer performs resource selection. The physical layer can perform resource selection according to the information from the second indication and exclude the unavailable resource to obtain an available resource set A.

[00218] If the information from the second indication indicates a target resource grouping, resource set A can be obtained based on the resources in the target resource grouping. If the information from the second indication indicates the selected RB set, resource set A can be obtained based on the resources in the selected RB set. If the information from the second indication indicates a resource that encounters the consistent LBT fault, resource set A can be obtained by excluding the RB set that encounters the consistent LBT fault.

[00219] In operation S1206, the physical layer reports the A feature set to the MAC layer.

[00220] In operation S1208, the MAC layer performs resource selection according to the resource set A reported by the physical layer.

[00221] In the S1210 operation, if the MAC layer has the capacity to select sufficient resources that satisfy the condition, the MAC layer can transmit transmission-related information, such as the selected resource and the data packet to be transmitted (such as MAC PDU), to the physical layer. Petition 870250083220, dated 09 / 16 / 2025, page 76 / 250 70 / 92

[00222] In the S1212 operation, the physical layer can perform LBT capture on the resource selected by the MAC layer before data transmission. If the LBT is successful, the data is transmitted; if the LBT fails, the S11214 operation is performed.

[00223] In operation S1214, the physical layer transmits an LBT fault indication to the MAC layer. Taking RB array 1 as an example, the physical layer can transmit the LBT fault indication from RB array 1 to the MAC layer.

[00224] If RB1 array is associated with multiple channels, the LBT fault indication for RB1 array can be transmitted in at least one of the following cases: all channels encountering the LBT fault; at least one channel encountering the LBT fault; and one channel where a data transmission resource is located encountering the LBT fault. The specific situation for transmitting the LBT fault indication for RB1 array depends on whether the terminal device is configured with a protection range. If the terminal device is configured with the protection range, the LBT fault indication for RB1 array can be transmitted if all channels encounter the LBT fault. If the terminal device is not configured with the protection range, the LBT fault indication for RB1 array can be transmitted if at least one channel encounters the LBT fault.

[00225] In operation S1216, after receiving the LBT fault indication from RB set 1, the MAC layer starts a timer for RB set 1 if the timer for RB set 1 is not started; and the Petition 870250083220, dated 09 / 16 / 2025, page 77 / 250 Layer 71 / 92 of the MAC increments a counter for the set of RBs by 1 if the timer for the set of RBs is started.

[00226] In addition, the MAC layer can also trigger new feature selection. New feature selection is a new feature selection that is triggered by the LBT failure.

[00227] The MAC layer indicates the consistent LBT fault and / or the set of RBs that encounters the consistent LBT fault for the physical layer.

[00228] In operation S1218, when the timer for set RBs 1 expires, it is determined whether a counter value for set RBs 1 is greater than a predefined limit.

[00229] In operation S1220, if the counter value for set RBs 1 is greater than the predefined limit, it is determined that set RBs 1 encounters a consistent LBT fault.

[00230] The MAC layer can trigger a new resource selection. For example, the process can return to operation S1202 for re-execution. The MAC layer can again indicate a resource grouping to the physical layer; the physical layer can be the previous resource grouping (i.e., the current resource grouping) or it can be a new resource grouping.

[00231] This new resource selection may be a resource selection triggered by a consistent LBT failure occurring on a single set of RBs. If there is still a set of RBs associated with the current resource grouping for which the consistent LBT failure is not triggered, the resource selection may be performed on the grouping of Petition 870250083220, dated 09 / 16 / 2025, page 78 / 250 72 / 92 current resources or resource selection may be performed in another resource grouping.

[00232] In operation S1222, when the timer for RB set 1 expires and if the counter value for RB set 1 does not reach the preset limit, the counter for RB set 1 is set to zero.

[00233] If RB set 1 encounters a consistent LBT fault, the MAC layer will trigger a switch of the RB set or a new resource selection. For example, the process may return to operation S1202 for re-execution. The MAC layer may indicate a new RB set to the physical layer, and the new RB set may be the switched RB set.

[00234] In operation S1224, after resource grouping is switched, the MAC layer can cancel the consistent LBT failure triggered in the previous set of RBs.

[00235] If the LBT on the new resource or set of RBs is successful, the MAC layer may cancel the consistent LBT failure triggered on the previous set of RBs. Alternatively, if the data transmission on the new resource or set of RBs is successful, the MAC layer may cancel the consistent LBT failure triggered on the previous set of RBs.

[00236] If the terminal device has traversed all configured RBs but still cannot successfully perform LBT or successfully transmit all data, the terminal device may trigger RLF for the point-to-point broadcast link and cancel all consistent LBT failures, on the RB sets, that are triggered but not Petition 870250083220, dated 09 / 16 / 2025, p. 79 / 250 73 / 92 cancelled.

[00237] If the terminal device has performed N switches (i.e., reaching the configured number), but still fails to successfully execute the LBT or does not successfully transmit all data, the terminal device may trigger the RLF for all point-to-point broadcast links and cancel all consistent LBT failures, in the RB sets, that are triggered but not canceled.

[00238] If the terminal device is in the RRC connected state, the connected terminal device can transmit a consistent LBT fault report, such as transmitting the consistent LBT fault report to the network device or the peering device. Furthermore, when the terminal device transmits the consistent LBT fault report, the terminal device can also trigger a consistent LBT fault cancel operation. That is, the terminal device can trigger the consistent LBT fault cancel operation when resource switching is performed, or it can trigger the consistent LBT fault cancel operation when the consistent LBT fault report is transmitted. Therefore, it is necessary to specify how the two consistent LBT fault cancel operations are performed.

[00239] Based on this, it is proposed that the terminal device can trigger the consistent LBT fault cancellation operation only after performing the two above operations in an embodiment of the present disclosure. For example, for a consistent LBT fault triggered in the RB array, the terminal device can trigger the Petition 870250083220, dated 09 / 16 / 2025, page 80 / 250 74 / 92 Consistent LBT fault cancellation operation only after transmitting the consistent LBT fault report to the RB pool and performing resource grouping switching. Alternatively, the terminal device can trigger the consistent LBT fault cancellation operation after performing either of the two above operations. For example, the terminal device may choose to transmit the consistent LBT fault report or switch resource grouping and trigger the consistent LBT fault cancellation operation after the corresponding operation is achieved.

[00240] After triggering the consistent LBT fault cancellation operation, the MAC layer can indicate to the physical layer the cancellation of the consistent LBT fault or the set of RBs for which the consistent LBT fault is canceled. THIRD EXAMPLE

[00241] Figure 13 illustrates a case where consistent LBT occurs in the resource grouping and the resource switching policy is switching the set of resource groupings. For example, when some resource grouping is marked as encountering consistent LBT failure, the resource grouping is switched. When a set of RBs associated with some resource grouping is indicated to encounter an LBT failure, a counter corresponding to the resource grouping is incremented by 1, and when the number of LBT failures occurring consecutively in the resource grouping is greater than a predefined threshold, the resource grouping is switched.

[00242] With reference to Figure 13, in the operation Petition 870250083220, dated 09 / 16 / 2025, page 81 / 250 75 / 92 In the S1302, a MAC layer triggers feature selection or new feature selection. The MAC layer triggers a physical layer to perform feature selection, and the MAC layer can transmit second indication information to the physical layer during triggering.

[00243] The second indication information may indicate one or more of the following parameters: information related to data transmission, information on a currently available COT, received IUC information, SL DRX information, information on a target resource grouping, information on a selected set of RBs, and so on. Information related to data transmission may include one or more of the following: a required resource size, a number of retransmissions, a priority, and the like. Information on the available COT may include information related to the COT's timing, such as remaining duration, start time, end time, and the like. Information on the target resource grouping may be determined based on the set of RBs that encounters the consistent LBT failure.The resource grouping selected by the MAC layer may need to be associated with at least one set of RBs for which no consistent LBT fault is triggered.

[00244] In operation S1304, the physical layer performs resource selection. The physical layer can perform resource selection according to the information from the second indication and exclude the unavailable resource to obtain an available resource set A.

[00245] If the information from the second indication suggests a grouping of target resources, the set of Petition 870250083220, dated 09 / 16 / 2025, page 82 / 250 76 / 92 resources A can be obtained based on the resources of the target resource grouping. If the information from the second indication indicates the selected RB set, resource set A can be obtained based on the resources of the selected RB set.

[00246] In operation S1306, the physical layer reports the A feature set to the MAC layer.

[00247] In operation S1308, the MAC layer performs resource selection according to the resource set A reported by the physical layer.

[00248] In the S1310 operation, the MAC layer can transmit transmission-related information, such as the selected resource and the data packet to be transmitted (such as MAC PDU), to the physical layer.

[00249] In the S1312 operation, the physical layer can perform LBT capture on the resource selected by the MAC layer before data transmission. If the LBT is successful, the data is transmitted; if the LBT fails, the S1316 operation is performed.

[00250] In operation S1314, the physical layer transmits an LBT fault indication to the MAC layer.

[00251] Taking RB1 as an example, if RB1 is associated with multiple channels, the LBT fault indication for RB1 can be transmitted in at least one of the following cases: all channels encountering the LBT fault; at least one channel encountering the LBT fault; and one channel where a data transmission resource is located encountering the LBT fault. The specific case for transmitting the LBT fault indication for RB1 depends on whether the terminal device Petition 870250083220, dated 09 / 16 / 2025, p. 83 / 250 77 / 92 is configured with a protection band. If the terminal device is configured with the protection band, the LBT fault indication for RB set 1 can be transmitted if all channels encounter the LBT fault. If the terminal device is not configured with the protection band, the LBT fault indication for RB set 1 can be transmitted if at least one channel encounters the LBT fault.

[00252] In operation S1316, after receiving the LBT failure indication, the MAC layer starts a timer for resource group 1 if the timer for resource group 1 is not started; and the MAC layer increments the resource group counter by 1 if the timer for resource group 1 is started.

[00253] In addition, the MAC layer can also trigger new feature selection. New feature selection is a new feature selection that is triggered by the LBT failure.

[00254] The MAC layer indicates the consistent LBT fault and / or the resource cluster that encounters the consistent LBT fault for the physical layer.

[00255] In operation S1318, when the timer for resource group 1 expires, it is determined whether a counter value for resource group 1 is greater than a predefined limit.

[00256] In operation S1320, if the counter value for resource grouping 1 is greater than the predefined limit, it is determined that resource grouping 1 encounters a consistent LBT failure.

[00257] In operation S1322, when the timer Petition 870250083220, dated 09 / 16 / 2025, page 84 / 250 If resource group 1's counter value expires (78 / 92), and the value of the resource group 1 counter does not reach the predefined limit, the resource group 1 counter will be set to zero.

[00258] If resource cluster 1 encounters a consistent LBT failure, the MAC layer triggers a resource cluster switch or a new resource selection. For example, the process might return to operation S1302 for re-execution. The MAC layer might again indicate a resource cluster to the physical layer; the resource cluster might be the switched resource cluster.

[00259] In the S1324 operation, after the resource grouping is switched, the MAC layer can cancel the consistent LBT failure triggered in the previous resource grouping.

[00260] If the LBT on the new resource or resource cluster is successful, the MAC layer can cancel the consistent LBT failure triggered on the previous resource cluster. Alternatively, if the data transmission on the new resource or resource cluster is successful, the MAC layer can cancel the consistent LBT failure triggered on the previous resource cluster.

[00261] If the terminal device has traversed all configured resource pools but still does not successfully perform the LBT or does not successfully transmit all data, the terminal device may trigger the RLF for the point-to-point broadcast link and cancel all consistent LBT failures, in resource pools, that are triggered but not canceled.

[00262] If the terminal device has performed Petition 870250083220, dated 09 / 16 / 2025, page 85 / 250 79 / 92 N switches (i.e., reaching the configured number), but still failing to successfully execute the LBT or successfully transmit all data, the terminal device may trigger the RLF for all point-to-point broadcast links and cancel all consistent LBT failures, in resource clusters, that are triggered but not canceled.

[00263] If the terminal device is in the RRC connected state, the connected terminal device can transmit a consistent LBT fault report, such as transmitting the consistent LBT fault report to the network device or the peering device. Furthermore, when the terminal device transmits the consistent LBT fault report, the terminal device can also trigger a consistent LBT fault cancel operation. That is, the terminal device can trigger the consistent LBT fault cancel operation when resource switching is performed, or it can trigger the consistent LBT fault cancel operation when the consistent LBT fault report is transmitted. Therefore, it is necessary to specify how the two consistent LBT fault cancel operations are performed.

[00264] Based on this, it is proposed that the terminal device can trigger the consistent LBT fault cancel operation only after performing the two above operations in an embodiment of the present disclosure. For example, for a consistent LBT fault triggered in resource grouping, the terminal device can trigger the consistent LBT fault cancel operation only Petition 870250083220, dated 09 / 16 / 2025, page 86 / 250 80 / 92 after transmitting the consistent LBT fault report to the resource grouping and performing the resource grouping switch. Alternatively, the terminal device may trigger the consistent LBT fault cancel operation after performing either of the two above operations. For example, the terminal device may choose to transmit the consistent LBT fault report or switch the resource grouping and trigger the consistent LBT fault cancel operation after the corresponding operation is achieved.

[00265] After triggering the consistent LBT fault cancellation operation, the MAC layer can indicate to the physical layer either the consistent LBT fault cancellation or the cancellation of the resource cluster that encounters the consistent LBT fault.

[00266] The method embodiments of the present disclosure are described in detail above with reference to Figures 1 to 13, and the device embodiments of the present disclosure will be described in detail below with reference to Figures 14 and 15. It should be understood that the description of the method embodiments and the description of the device embodiments correspond to each other. Therefore, parts not described in detail may refer to the embodiments of the prior method.

[00267] Figure 14 is a schematic block diagram of a terminal device according to an embodiment of the disclosure. The terminal device 1400 illustrated in Figure 14 can be any terminal device described above. The terminal device 1400 may include a determination unit 1410. Petition 870250083220, dated 09 / 16 / 2025, p. 87 / 250 81 / 92

[00268] Determination unit 1410 is configured to determine a first policy related to a consistent LBT failure, the capture of the consistent LBT failure is related to a feature granularity.

[00269] In some modalities, the granularity of the resource includes a set of RBs and / or a set of resources.

[00270] In some embodiments, the first policy includes one or more of: a resource switching policy, a second policy related to canceling a triggered consistent LBT fault, and a third policy related to determining the consistent LBT fault.

[00271] In some modes, the resource switching policy includes one or more of: switching a group of resources, switching a set of RBs, and switching a time-frequency resource.

[00272] In some embodiments, the resource switching policy includes resource grouping switching, and the terminal device additionally includes a switching unit, configured to switch the resource grouping when a first condition is met. The first condition relates to one or more of: whether the set of RBs encounters the consistent LBT fault; and a data transmission requirement.

[00273] In some embodiments, the first condition includes one or more of the following: all RB sets associated with a current resource cluster encounter consistent LBT failure; and a number of remaining resources in the resource cluster is less than or equal to a predefined threshold. The remaining resources belong to resources that do not encounter any consistent LBT failure and / or resources Petition 870250083220, dated 09 / 16 / 2025, p. 88 / 250 82 / 92 that meet the data transmission requirement.

[00274] In some modes, the remaining resources include time-frequency resources and / or RB sets.

[00275] In some embodiments, if the resource switching policy includes switching of the RB set or switching of the time-frequency resource, the terminal device will also include a switching unit, configured to switch the RB set or the time-frequency resource when a current RB set encounters a consistent LBT failure.

[00276] In some modes, consistent LBT failure occurs in the set of RBs.

[00277] In some modes, the resource switching policy includes switching resource grouping or switching time-frequency resources.

[00278] In some embodiments, the terminal device additionally includes a switching unit, configured to switch the resource grouping or the time-frequency resource when a current resource grouping encounters a consistent LBT failure.

[00279] In some modes, consistent LBT failure occurs across the feature set.

[00280] In some embodiments, the second policy includes: canceling the consistent LBT fault triggered by a first resource when a second condition is met, and the second condition includes one or more of the following: a first operation is triggered by the terminal device, the first operation being related to resource switching; and a consistent LBT fault report is transmitted by Petition 870250083220, dated 09 / 16 / 2025, page 89 / 250 83 / 92 terminal device.

[00281] In some embodiments, the operation in which the consistent LBT fault report is transmitted by the terminal device comprises one or more of the following: the terminal device transmits the consistent LBT fault to a peering device; and the terminal device transmits the consistent LBT fault to a network device.

[00282] In some embodiments, the first operation includes one or more of the following: resource switching is performed; LBT on a switched resource is successful; data is successfully transmitted on a switched resource; and an RLF for a point-to-point broadcast link is triggered.

[00283] In some embodiments, the operation that the RLF for the point-to-point broadcast link is triggered includes one or more of the following: The LBT on a switched destination resource is unsuccessful; a consistent LBT failure is triggered for a switched destination resource; and data is not successfully transmitted on a switched destination resource. The destination resource is all configured resources or a predefined number of resources.

[00284] In some modes, the target resource includes a time-frequency resource and / or a set of RBs.

[00285] In some embodiments, if the second condition includes that the RLF for the point-to-point broadcast link is triggered, the first resource includes the destination resource.

[00286] In some embodiments, the first resource includes one or more of the following: a set of RBs associated with one or more resource groupings before switching; one or more sets of RBs before switching; and one or more groupings of Petition 870250083220, dated 09 / 16 / 2025, page 90 / 250 84 / 92 resources before switching.

[00287] In some embodiments, if the first condition includes the consistent LBT failure report transmitted by the terminal device, the first resource includes a resource corresponding to the consistent LBT failure transmitted.

[00288] In some embodiments, the terminal device additionally includes a transmission unit, configured to transmit, via a MAC layer, the first indication information to a physical layer of the terminal device, the first indication information being configured to indicate the cancellation of the consistent LBT fault and / or cancellation of a consistent LBT fault feature.

[00289] In some embodiments, the third policy includes: determining that a first set of RBs encounters consistent LBT failure if a number of LBT failures occurring in the first set of RBs reaches a first predefined threshold within a first predefined duration; or the third policy includes: determining that a first resource grouping encounters consistent LBT failure if a number of LBT failures occurring in a set of RBs associated with the first resource grouping reaches a second predefined threshold within a second predefined duration.

[00290] In some embodiments, the fact that the first set of RBs encounters the LBT fault is related to the second piece of information, and the second piece of information includes one or more of the following: all channels associated with the first set of RBs encounter an LBT fault; at least one channel Petition 870250083220, dated 09 / 16 / 2025, p. 91 / 250 85 / 92 related to the first set of RBs encounters an LBT fault; and a channel in which a resource for data transmission is located encounters an LBT fault.

[00291] In some implementations, the second piece of information relates to the possibility of the terminal device being configured with a guard band.

[00292] In some embodiments, a resource selected for data transmission by the terminal device is determined based on the information in the second indication, and the information in the second indication is configured to indicate one or more of: information from a grouping of target resources, determined based on information related to consistent LBT failure; and information related to a set of target RBs.

[00293] In some modes, the target RB set includes one or more of the following: a selected RB set; and an RB set that encounters the consistent LBT fault.

[00294] In some modes, the selected RB set does not include any RB set that encounters the consistent LBT fault.

[00295] In some embodiments, the target resource cluster is associated with at least one set of RBs or resource cluster for which no consistent LBT fault is triggered; and / or the target resource cluster includes at least one resource cluster for which no consistent LBT fault is triggered.

[00296] In some modes, the selected resource is transmitted through a MAC layer of the terminal device to a physical layer of the terminal device, the Petition 870250083220, dated 09 / 16 / 2025, page 92 / 250 86 / 92 selected feature is determined by the MAC layer based on a second feature, and the second feature is determined by the physical layer through feature selection based on information from the second indication.

[00297] In some modes, the second resource is determined based on one or more of: a resource in the target resource grouping; a resource in a selected set of RBs; and a resource for which consistent LBT failure is excluded.

[00298] Figure 15 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure. The dashed line in Figure 15 indicates that the unit or module is optional. The 1500 apparatus can be configured to perform the methods described in the method embodiments described above. The 1500 apparatus can be a chip or a terminal device.

[00299] The 1500 apparatus may include one or more 1510 processors. The 1510 processor may support the 1500 apparatus in executing the methods described in the preceding method embodiments. The 1510 processor may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Optionally, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, gate logic device, or discrete transistor, or discrete hardware component. The general-purpose processor may be a microprocessor, or the processor may be any Petition 870250083220, dated 09 / 16 / 2025, page 93 / 250 87 / 92 conventional processor and similar.

[00300] The 1500 device may additionally include one or more 1520 memories. The 1520 memory stores a program that can be executed by the 1510 processor to cause the 1510 processor to perform the method described in the embodiments of the method above. The 1520 memory may be independent of the 1510 processor, or it may be integrated into the 1510 processor.

[00301] The 1500 device may also include a 1530 transceiver. The 1510 processor may communicate with other devices or chips via the 1530 transceiver. For example, the 1510 processor may transmit data to or receive data from other devices or chips via the 1530 transceiver.

[00302] A computer-readable storage medium is also provided in one embodiment of the present disclosure, the computer-readable storage medium being configured to store a program. The computer-readable storage medium can be applied to a terminal device in the embodiments of the present disclosure, and the program, when executed on a computer, causes the computer to execute methods that are performed by the terminal device in the various embodiments of the present disclosure.

[00303] A computer program product is also provided in an embodiment of the disclosure. The computer program product includes a program. The computer program product can be applied to a terminal device in the embodiments of the present disclosure, and the program, when executed on a computer, causes the computer to execute methods that are performed by the terminal device. Petition 870250083220, dated 09 / 16 / 2025, page 94 / 250 88 / 92 in the various modalities of the present disclosure.

[00304] A computer program is also provided in an embodiment of the disclosure. The computer program can be applied to a terminal device in the embodiments of the present disclosure, and the computer program, when executed on a computer, causes the computer to perform methods that are performed by the terminal device in the various embodiments of the present disclosure.

[00305] It should be understood that the terms system and network in this document may be used interchangeably. Furthermore, the terms used in this disclosure are used only to explain specific embodiments of this disclosure and are not intended to limit the invention. The terms first, second, third, fourth, and similar terms introduced in the specification and claims of this disclosure and in the accompanying drawings are used to distinguish different objects and not to describe a specific order. In addition, the terms include and have and any variations thereof are intended to cover non-exclusive inclusion.

[00306] The word "indicate" mentioned in the modalities of revelation can be a direct indication or an indirect indication, and it can also be indicative of a relationship. For example, A indicates B, which can represent that A directly indicates B, for example, B can be obtained through A; or that A indirectly indicates B, for example, A indicates C and B can be obtained through C; or that there is an association between A and B.

[00307] In the modalities of the present disclosure, the aforementioned term include may refer to directly including or Petition 870250083220, dated 09 / 16 / 2025, p. 95 / 250 89 / 92 indirectly. Alternatively, the term "include" in the modalities of this disclosure may be replaced by "indicate" or "to determine." For example, the expression "that A includes B" may be replaced by "A to indicate B," or "A is to determine B."

[00308] In one embodiment of the present disclosure, the expression B corresponding to A means that B is associated with A, and B is determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, and that B may also be determined according to A and / or other information.

[00309] The word correspondence in the modalities of the present disclosure may represent that the listed items have a direct or indirect correspondence relationship, or an association relationship, or a relationship of indicating and being indicated, configuring and being configured, etc.

[00310] The phrase “be predefined” or “be preconfigured” mentioned in the disclosure embodiments may be implemented by pre-storing corresponding codes, tables, or by other means that may be used to indicate associated information in devices (such as terminal devices and network devices), the specific implementation of which is not limited in this disclosure. For example, predefined may mean that it is defined in the protocol.

[00311] In the disclosure modalities, the protocol may be a standard protocol in the field of communication, such as an LTE protocol, an NR protocol, and related protocols applied in future systems of Petition 870250083220, dated 09 / 16 / 2025, page 96 / 250 90 / 92 communication, which is not limited to the present document.

[00312] The term and / or in the embodiments of the present disclosure is used only to describe an associative relationship between the associated objects, and represents that three relationships can exist. For example, A and / or B can represent the three conditions: independent existence of A, existence of A and B, and independent existence of B. Furthermore, the character / ” in the present disclosure generally represents that the preceding and next associated objects form an “or” relationship.

[00313] In several embodiments of the present disclosure, the sequence number size of the processes mentioned above does not signify the order of execution, and the order of execution of various processes is determined by their inherent functions and logic, and should not be limited in any way to the process of implementing the embodiments of the present disclosure.

[00314] In the various embodiments provided in this disclosure, it should be understood that the system, device, and method disclosed may be implemented in other schemes. For example, the apparatus embodiments described are merely illustrative. For example, the division of units is merely a logical function division, and there may be other divisions in actual implementations. For example, several units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Furthermore, the mutual coupling or direct coupling or communication connections exhibited or discussed may be an indirect coupling or communication connection implemented through some interfaces, devices, or units, and may be implemented in electrical forms, Petition 870250083220, dated 09 / 16 / 2025, page 97 / 250 91 / 92 mechanical or other.

[00315] The units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units; they may be located in a single location, or they may be distributed across multiple network units. Some or all of the units may be selected according to the actual needs to achieve the objectives of the modal solutions.

[00316] Furthermore, functional units in the modalities of this disclosure may be integrated into a processing unit, or each of the units may exist physically and separately, or two or more units are integrated into a unit.

[00317] The embodiments above may be implemented wholly or partially by software, hardware, firmware, or any combination thereof. When implemented in software form, the embodiments may be implemented wholly or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in accordance with the embodiments of this disclosure are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored on a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the Petition 870250083220, dated 09 / 16 / 2025, page 98 / 250 92 / 92 Computer instructions can be transmitted from one site, computer, server, or data center to another site, computer, server, or data center by means of a wired method (e.g., a coaxial cable, a fiber optic cable, a digital subscriber line (DSL)) or a wireless method (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media accessible to a computer or a data storage device, such as a server, data center, or similar, that is integrated with one or more available media. Available media can be magnetic media (e.g., a floppy disk, a hard disk, magnetic tape), optical media (e.g., a digital versatile disc (DVD)), or semiconductor media (e.g., a solid-state drive (SSD)), etc.

[00318] The foregoing descriptions are merely specific implementations of this disclosure, but are not intended to limit the scope of protection of this disclosure. Any variation or substitution readily determined by a person skilled in the art within the technical scope disclosed in this disclosure shall be within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure shall be subject to the scope of protection of the claims. Petition 870250083220, dated 09 / 16 / 2025, page 99 / 250

Claims

1 / 7 CLAIMS 1. METHOD FOR WIRELESS COMMUNICATION characterized by comprising: performing, by a terminal device, a first operation related to a consistent listen-before-speech (LBT) failure, capturing the consistent LBT failure related to a feature granularity.

2. METHOD, according to claim 1, characterized by the granularity of the resource comprising a set of RB and / or a grouping of resources.

3. METHOD, according to claim 1 or 2, characterized in that the first operation comprises one or more of: a resource switching operation, a second operation related to canceling a triggered consistent LBT fault, and a third operation related to determining the consistent LBT fault, wherein the resource switching operation comprises one or more of: switching a group of resources, switching a set of RBs, and switching a time-frequency resource.

4. METHOD, according to claim 3, characterized in that the resource switching operation comprises the switching of the resource grouping, and the method further comprises: switching, by the terminal device, of the resource grouping when a first condition is met, wherein the first condition relates to one or more of: the possibility of the set of RBs encountering the consistent LBT fault; and a data transmission requirement, wherein the first condition comprises one or more of: all sets of RBs associated with a grouping. Petition 870250083220, dated 09 / 16 / 2025, p.100 / 250 2 / 7 of current resources encounter a consistent LBT fault; and a number of remaining resources in the resource grouping is less than or equal to a predefined threshold, wherein the remaining resources belong to resources that do not encounter any consistent LBT fault and / or resources that meet the data transmission requirement, or wherein the resource switching operation comprises switching the RB set or switching the time-frequency resource, and the method further comprises: switching, by the terminal device, the RB set or the time-frequency resource when a current RB set encounters a consistent LBT fault.

5. METHOD, according to any one of claims 3 to 4, characterized in that the second operation comprises: canceling the consistent LBT fault triggered from a first resource when a second condition is met, and the second condition comprises: a consistent LBT fault report is transmitted by the terminal device, wherein the operation in which the consistent LBT fault report is transmitted by the terminal device comprises: the terminal device transmits the consistent LBT fault to a network device, wherein the method further comprises: transmitting, via a media access control (MAC) layer of the terminal device, the first indication information to a physical layer of the terminal device, the first indication information being configured to indicate Petition 870250083220, dated 09 / 16 / 2025, p.101 / 250 3 / 7 cancellation of consistent LBT failure and / or cancellation of a consistent LBT failure feature, wherein the third operation comprises: determining that a first set of RBs encounters consistent LBT failure if a number of LBT failures occurring in the first set of RBs reaches a first predefined threshold within a first predefined duration.

6. METHOD, according to any one of claims 1 to 5, characterized in that a resource selected for data transmission by the terminal device is determined based on second indication information, and the second indication information is configured to indicate one or more of the following: information from a target resource grouping, the information from a target resource grouping being determined based on consistent LBT fault-related information; and information related to a target RB set, wherein the target RB set comprises: a set of RBs that encounters the consistent LBT fault.

7. TERMINAL DEVICE characterized by comprising: a determination unit, configured to perform a first operation related to a consistent listen-before-talk (LBT) failure, the capture of the consistent LBT failure being related to a feature granularity.

8. TERMINAL DEVICE, according to Petition 870250083220, dated 09 / 16 / 2025, page 102 / 250 4 / 7 claim 7, characterized by the granularity of the resource comprising a set of RB and / or a grouping of resources.

9. TERMINAL DEVICE, according to claim 7 or 8, characterized in that the first operation comprises one or more of: a resource switching operation, a second operation related to the cancellation of a triggered consistent LBT fault, and a third operation related to the determination of the consistent LBT fault, wherein the resource switching policy comprises one or more of: switching of a resource group, switching of a set of RBs, and switching of a time-frequency resource.

10. TERMINAL DEVICE, according to claim 9, characterized in that the resource switching operation comprises resource grouping switching, and the terminal device further comprises: a switching unit, configured to switch the resource grouping when a first condition is met, wherein the first condition relates to one or more of: the possibility of the RB set encountering a consistent LBT fault; and a data transmission requirement, wherein the first condition comprises one or more of: all RB sets associated with a current resource grouping encounter a consistent LBT fault;and a number of remaining resources in the resource grouping is less than or equal to a predefined limit, wherein the remaining resources belong to resources that do not encounter any consistent LBT fault and / or resources that meet the data transmission requirement, or wherein the resource switching operation comprises switching of the RB set or switching of the time-frequency resource, and the terminal device further comprises: a switching unit, configured to switch the RB set or the time-frequency resource when a current RB set encounters a consistent LBT fault.

11. TERMINAL DEVICE, according to any one of claims 9 to 10, characterized in that the second operation comprises: canceling the consistent LBT fault triggered from a first resource when a second condition is met, and the second condition comprises: a consistent LBT fault report is transmitted by the terminal device, wherein the operation in which the consistent LBT fault report is transmitted by the terminal device comprises: the terminal device transmits the consistent LBT fault to a network device.

12. TERMINAL DEVICE, according to claim 11, characterized by further comprising: a transmission unit, configured to transmit, via a media access control (MAC) layer, the first indication information to a physical layer of the terminal device, the first indication information being configured to indicate the cancellation of the consistent LBT fault and / or the cancellation of a consistent LBT fault feature, wherein the third policy comprises: determining that a first set of RBs encounters the consistent LBT fault if a number of LBT faults occurring in the first set of RBs reaches a first predefined threshold within a first predefined duration.

13. TERMINAL DEVICE, according to any one of claims 7 to 12, characterized in that a resource selected for data transmission by the terminal device is determined based on information from the second indication, and the information from the second indication is configured to indicate one or more of the following: information from a target resource grouping, the information from a target resource grouping being determined based on information related to consistent LBT failure; and information related to a set of target RBs, wherein the target RB set comprises: a set of RBs that encounter consistent LBT failure.

14. TERMINAL DEVICE, according to claim 13, characterized in that the target resource grouping is associated with at least one set of RBs or resource grouping for which no consistent LBT fault is triggered; and / or the target resource grouping comprises at least one resource grouping for which no consistent LBT fault is triggered, wherein the selected resource is transmitted by a MAC layer of the terminal device to a physical layer of the terminal device, the selected resource being determined by the MAC layer based on a second resource, and the second resource being determined by the physical layer through resource selection based on the information from the second indication, Petition 870250083220, dated 09 / 16 / 2025, p. 105 / 250 7 / 7 wherein the second resource is determined based on one or more of: a resource in the target resource grouping; and a resource in which the consistent LBT fault is excluded.

15. A chip characterized by comprising a processor configured to call upon a program stored in memory, to cause a device on which the chip is mounted to perform the method as defined in any one of claims 1 to 6.

16. COMPUTER-READABLE STORAGE MEDIA characterized by storing a program that causes a computer to perform the method as defined in any one of claims 1 to 6. Petition 870250083220, dated 09 / 16 / 2025, p. 106 / 250

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