Listen before talk failure report for sidelink channel

Abstract

In summary, various aspects of this disclosure relate to wireless communications. In some aspects, a user equipment (UE) can detect one or more failures of a Listen-Before-Speak (LBT) process within a time quantity when transmitting data to at least one other UE using at least one first bandwidth on at least one sidelink channel. The UE can send a report indicating one or more failures to a base station or at least one of the other UEs. Numerous other aspects are provided.

Description

[0001] Cross-reference to related applications

[0002] This patent application claims priority to U.S. non-provisional patent application No. 17 / 127,063, filed on December 18, 2020, entitled “LISTEN-BEFORE-TALKFAILURE REPORTING FOR SIDELINK CHANNELS,” which is expressly incorporated herein by reference. Technical Field

[0003] In summary, various aspects of this disclosure relate to wireless communication, and various aspects of this disclosure relate to techniques and apparatus for listen-before-speak failure reporting for side-link channels. Background Technology

[0004] Wireless communication systems have been widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / improved LTE is a collection of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs), where each BS is capable of supporting communication for multiple user equipments (UEs). UEs can communicate with the base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, and an uplink (or reverse link) refers to the communication link from the UE to the BS. As described further in detail herein, a BS may be referred to as a Node B, gNB, Access Point (AP), Radio Headend, Transmit / Receive Point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0006] The above multiple access technologies have been adopted in various telecommunications standards to provide a universal protocol enabling different user equipment to communicate across city limits, countries, regions, and even globally. NR (which can also be called 5G) is an evolution of the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband internet access by improving spectrum efficiency, reducing costs, improving service, making full use of new spectrum, using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on the downlink (DL) (CP-OFDM), using CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Spread Spectrum OFDM (DFT-s-OFDM)) on the uplink (UL) and integrating with other open standards, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] In some aspects, a user equipment (UE) for wireless communication includes: a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: detect one or more failures of a Listen-Before-Speak (LBT) process within a time quantity when transmitting data to at least one other UE using at least one first bandwidth on at least one sidelink channel; and transmit a report indicating the one or more failures to the base station or at least one of the at least one other UE.

[0008] In some aspects, a base station for wireless communication includes: a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receive from a UE a report indicating one or more failures of an LBT process associated with at least one first bandwidth on at least one side link channel; and send to the UE an indication of at least one second bandwidth to be used on the at least one side link channel.

[0009] In some aspects, a method of wireless communication performed by a UE includes: detecting one or more failures of an LBT process within a time period when transmitting data to at least one other UE using at least one first bandwidth on at least one side link channel; and transmitting a report indicating the one or more failures to the base station or at least one of the at least one other UE.

[0010] In some aspects, a method of wireless communication performed by a base station includes: receiving from a UE a report indicating one or more failures of an LBT process associated with at least one first bandwidth on at least one side link channel; and sending to the UE an indication of at least one second bandwidth to be used on the at least one side link channel.

[0011] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: detect one or more failures of an LBT process within a time period while transmitting data to at least one other UE using at least one first bandwidth on at least one sidelink channel; and send a report indicating the one or more failures to the base station or at least one of the at least one other UE.

[0012] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the base station to: receive from a UE a report indicating one or more failures of an LBT process associated with at least one first bandwidth on at least one side link channel; and send to the UE an indication of at least one second bandwidth to be used on the at least one side link channel.

[0013] In some aspects, an apparatus for wireless communication includes: a unit for detecting one or more failures of an LBT process within a time quantity when transmitting data to at least one other UE using at least one first bandwidth on at least one side link channel; and a unit for transmitting a report indicating the one or more failures to the base station or at least one of the at least one other UE.

[0014] In some aspects, an apparatus for wireless communication includes: a unit for receiving from a UE a report indicating one or more failures of an LBT process associated with at least one first bandwidth on at least one side link channel; and a unit for sending to the UE an indication of at least one second bandwidth to be used on the at least one side link channel.

[0015] The aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems, as fully described herein with reference to the accompanying drawings and description, and as shown in the accompanying drawings and description.

[0016] To facilitate a better understanding of the following detailed description, the features and technical advantages of the examples based on this disclosure have been generally summarized above. Further features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures that perform the same purpose as this disclosure. These equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (regarding their organization and operation) and the associated advantages will be better understood when considering the following detailed description in conjunction with the accompanying drawings. Each of the drawings provided is for illustrative and descriptive purposes only and is not intended to limit the invention. Attached Figure Description

[0017] To provide a detailed understanding of the features described above in this disclosure, this application provides a more specific description of some aspects with reference to the above brief summary, some of which are illustrated in the accompanying drawings. However, it should be noted that since the description may allow for other equivalent and effective aspects, these drawings merely depict certain typical aspects of this disclosure and should not be considered as limiting the scope of protection of the invention. The same reference numerals in different drawings may identify the same or similar elements.

[0018] Figure 1 This is a schematic diagram illustrating an example of a wireless network according to various aspects of this disclosure.

[0019] Figure 2 This is a diagram illustrating an example of communication between a base station and a UE in a wireless network according to various aspects of this disclosure.

[0020] Figure 3 This is a schematic diagram illustrating an example of sidelink communication according to various aspects of this disclosure.

[0021] Figure 4 This is a schematic diagram illustrating examples of sidelink communication and access link communication according to various aspects of this disclosure.

[0022] Figure 5 This is a schematic diagram illustrating an example of an example associated with a Listen-After-Speak (LBT) failure report for a side link channel, according to various aspects of this disclosure.

[0023] Figure 6-7 This is a schematic diagram illustrating an example process associated with LBT failure reporting for a sidelink channel, according to various aspects of this disclosure.

[0024] Figure 8-9 This is a block diagram of an example device for wireless communication according to various aspects of this disclosure. Detailed Implementation

[0025] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be implemented in many different forms and should not be construed as limited to any particular structure or function given throughout this disclosure. Rather, these aspects are provided only to make this disclosure thorough and complete, and to fully convey the scope of protection of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should understand that the scope of this disclosure is intended to cover any aspect of the disclosure herein, whether implemented independently or in combination with any other aspect of this disclosure. For example, an apparatus or method may be implemented using any number of the aspects set forth herein. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods that may be implemented by using other structures, functions, or structures and functions other than those set forth herein, or structures and functions different from those set forth herein. It should be understood that any aspect of the disclosure herein may be embodied by one or more elements of the claims.

[0026] The following describes some aspects of a telecommunications system with reference to various devices and techniques. These devices and techniques will be described in the following detailed embodiments and depicted in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] It should be noted that although this document uses terms commonly associated with 5G or NR radio access technology (RAT) to describe the aspects, the aspects of this disclosure may also be applied to other RATs (e.g., 3G RAT, 4G RAT and / or RATs after 5G (e.g., 6G)).

[0028] Figure 1This is a schematic diagram illustrating an example of a wireless network 100 according to various aspects of this disclosure. The wireless network 100 may be a 5G (NR) network and / or an LTE network, etc., or may include elements of a 5G (NR) network and / or an LTE network, etc. The wireless network 100 may include multiple base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE), and a BS may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), Access Point, Transmitter / Receiver Point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, depending on the context in which the terminology is used, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area.

[0029] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell can cover a relatively large geographical area (e.g., a radius of several kilometers) and allow unrestricted access for UEs with service subscriptions. A picocell can cover a relatively small geographical area and allow unrestricted access for UEs with service subscriptions. A femtocell can cover a relatively small geographical area (e.g., a home) and allow restricted access for UEs associated with that femtocell (e.g., UEs in a closed subscriber group (CSG)). A BS used for macrocells can be called a macro BS. A BS used for picocells can be called a pico BS. A BS used for femtocells can be called a femto BS or a home BS. Figure 1 In the example shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” are used interchangeably herein.

[0030] In some respects, the cell need not be stationary, and the geographical area of ​​the cell can be moved depending on the location of the mobile BS. In some respects, BSs can use any suitable transport network to interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (e.g., direct physical connections or virtual networks).

[0031] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and transmit those data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions from other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be called a relay station, relay base station, repeater, etc.

[0032] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have higher transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0033] Network controller 130 can be coupled to a set of Base Stations (BSs) and provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via backhaul. These BSs can also communicate directly with each other or indirectly via wireless or wired backhaul.

[0034] UEs 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, user unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio device), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0035] Some UEs can be considered as Machine-Type Communication (MTC) UEs or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. For example, MTC and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node can provide connectivity to or from a network (e.g., a wide area network such as the Internet or cellular networks) via wired or wireless communication links. Some UEs can be considered Internet of Things (IoT) devices and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included in a housing that houses the components of UE 120 (e.g., processor components and / or memory components). In some aspects, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, and so on.

[0036] Typically, any number of wireless networks can be deployed within a given geographical area. Each wireless network can support a specific Radio Access Platform (RAT) and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT within a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0037] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary device). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein that are performed by base station 110.

[0038] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1) (where FR1 can span from 410 MHz to 7.125 GHz), and / or can communicate using an operating band with a second frequency range (FR2) (where FR2 can span from 24.25 GHz to 52.6 GHz). The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency (IF) bands. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the “below 6 GHz” band. Similarly, FR2 is often referred to as the “millimeter wave” band, although it differs from the Extremely High Frequency (EHF) band (30 GHz–300 GHz) recognized as a “millimeter wave” band by the International Telecommunication Union (ITU). Therefore, unless otherwise explicitly stated, it should be understood that the terms "below 6 GHz," etc. (if used herein), can broadly refer to frequencies below 6 GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., above 7.125 GHz). Similarly, unless otherwise explicitly stated, it should be understood that the terms "millimeter wave," etc. (if used herein), can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., below 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein can be applied to these modified frequency ranges.

[0039] As indicated above, Figure 1 This is provided as an example. Other examples can be found in the reference. Figure 1 The examples described are different.

[0040] Figure 2 This is a schematic diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to various aspects of this disclosure. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, wherein typically T ≥ 1 and R ≥ 1.

[0041] At base station 110, transmit processor 220 can receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from each UE, process the data for each UE (e.g., coding and modulation) based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, permission, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​these data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can process its respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog signal, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t, respectively.

[0042] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process these input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine parameters such as the Reference Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Received Quality (RSRQ), and / or Channel Quality Indicator (CQI). In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0043] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. For example, network controller 130 may include one or more devices in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0044] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may be included or may be contained within one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, and other examples. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements coupled to one or more transmitting and / or receiving components, such as... Figure 2 One or more components.

[0045] On the uplink, at UE 120, transmit processor 264 can receive data from data source 262 and control information (e.g., for reporting RSRP, RSSI, RSRQ, and / or CQI) from controller / processor 280, and process the data and control information. Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-encoded (if applicable) by TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted back to base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of UE 120 can be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receiver processor 258, transmitter processor 264, and / or TX MIMO processor 266. The processor (e.g., controller / processor 280) and memory 282 may be used with the transceiver to perform aspects of any of the methods described herein (e.g., as referenced). Figure 5-7 (As described).

[0046] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and can communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule downlink and / or uplink communications for UE 120. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, and / or TX MIMO processor 230. The processor (e.g., controller / processor 240) and memory 242 may be used to perform aspects of any of the methods described herein (e.g., as referenced). Figure 5-7 (As described).

[0047] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other components may perform one or more techniques associated with LBT failure reporting for the sidelink channel, as described in detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can perform or direct, for example Figure 6 Process 600 Figure 7 The operation of process 700 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when said one or more instructions are executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, translation, and / or interpretation), they may cause one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 6 Process 600 Figure 7 The operation of process 700 and / or other processes described herein. In some aspects, the execution instructions may include run instructions, translation instructions, compilation instructions, and / or interpretation instructions, etc.

[0048] In some aspects, UE (e.g., Figure 8 Device 800, Figure 5 The Tx UE 305-1 and / or UE 120 may include: a unit for detecting one or more failures of the LBT process within a time quantity when transmitting data to at least one other UE using at least one first bandwidth on at least one side crosslink channel; and / or a unit for sending a report indicating one or more failures to the base station or at least one of the at least one other UE. The unit for the UE to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TXMIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0049] In some aspects, the UE may further include: a unit for receiving at least one configuration message from a base station, wherein the time amount is at least partially based on at least one configuration message. In some aspects, the UE may further include: a unit for retransmitting data to at least one other UE using at least one second bandwidth on at least one sidelink channel. Additionally or alternatively, the UE may further include: a unit for canceling pending transmissions at least partially based on the detection of one or more failures; and / or a unit for stopping the transmission of one or more broadcast signals at least partially based on the detection of one or more failures.

[0050] In some aspects, base stations (e.g., Figure 9 The device 900 and / or base station 110 may include: for receiving signals from the UE (e.g., Figure 8 Device 800, Figure 5 The Tx UE 305-1 and / or UE 120) may be a unit for receiving reports of one or more failures of an LBT process associated with at least one first bandwidth on at least one side crosslink channel; and / or a unit for sending to the UE an indication of at least one second bandwidth to be used on at least one side crosslink channel. The unit for the base station to perform the operations described herein may include, for example, one or more of the following: transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0051] In some aspects, the base station may also include: a unit for sending at least one configuration message to the UE, wherein one or more failures are associated with a time amount based at least in part on the at least one configuration message.

[0052] Although Figure 2 The boxes in the diagram are shown as different components, but the functions described above with respect to these boxes can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by or under the control of controller / processor 280.

[0053] As pointed out above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0054] Figure 3 This is a schematic diagram illustrating example 300 of sidelink communication according to various aspects of this disclosure. (As follows) Figure 3As shown, the first UE 305-1 can communicate with the second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. UEs 305-1 and 305-2 can communicate using one or more sidelink channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, V2P communication, etc.), mesh networks, etc. In some aspects, UEs 305 (e.g., UEs 305-1 and / or UEs 305-2) can correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more sidelink channels 310 can use a PC5 interface and / or can operate in a high-frequency band (e.g., the 5.9 GHz band). Additionally or alternatively, UEs 305 can use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, symbols, etc.).

[0055] like Figure 3 As further shown, one or more sidelink channels 310 may include a Physical Sidelink Control Channel (PSCCH) 315, a Physical Sidelink Shared Channel (PSSCH) 320, and / or a Physical Sidelink Feedback Channel (PSFCH) 325. Similar to the Physical Downlink Control Channel (PDCCH) and / or Physical Uplink Control Channel (PUCCH) used for cellular communication with base station 110 via an access link or access channel, PSCCH 315 may be used to transmit control information. Similar to the Physical Downlink Shared Channel (PDSCH) and / or Physical Uplink Shared Channel (PUSCH) used for cellular communication with base station 110 via an access link or access channel, PSSCH 320 may be used to transmit data. For example, PSCCH 315 may carry sidelink control information (SCI) 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, spatial resources, etc.), wherein a transport block (TB) 335 may be carried on PSSCH 320. TB 335 may include data. PSFCH 325 may be used to transmit side-link feedback 340, such as Hybrid Automatic Repeat Request (HARQ) feedback (e.g., ACK / NACK information), Transmit Power Control (TPC), Schedule Request (SR), etc.

[0056] In some aspects, one or more sidelink channels 310 may use resource pooling. For example, scheduling assignments may be transmitted across time using specific resource blocks (RBs) in a subchannel (e.g., included in SCI 330). In some aspects, data transmissions associated with a scheduling assignment (e.g., on PSSCH 320) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, scheduling assignments and associated data transmissions are not transmitted on adjacent RBs.

[0057] In some aspects, UE 305 may operate using a transmission mode in which resource selection and / or scheduling is performed by UE 305 (e.g., not by base station 110). In some aspects, UE 305 may perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 305 may measure Received Signal Strength Indicator (RSSI) parameters (e.g., sidelink RSSI (S-RSSI) parameters) associated with various sidelink channels, may measure Reference Signal Received Power (RSRP) parameters (e.g., PSSCH-RSRP parameters) associated with various sidelink channels, may measure Reference Signal Received Quality (RSRQ) parameters (e.g., PSSCH-RSRQ parameters) associated with various sidelink channels, and so on, and may select the channel for transmission for sidelink communication based at least in part on the measurements.

[0058] Alternatively, UE 305 may use SCI 330 received in PSCCH 315 to perform resource selection and / or scheduling, whereby SCI 320 may indicate occupied resources, channel parameters, etc. Alternatively, UE 305 may perform resource selection and / or scheduling by determining the Channel Busy Rate (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating the maximum number of resource blocks that UE 305 can use for a particular set of subframes).

[0059] In a transport mode where resource selection and / or scheduling is performed by UE 305, UE 305 can generate sidelink grants and can send the grants in SCI 330. Sidelink grants can indicate one or more parameters (e.g., transport parameters) to be used for an upcoming sidelink transport, such as one or more resource blocks (e.g., for TB 335) to be used for an upcoming sidelink transport on PSSCH 320, one or more subframes to be used for an upcoming sidelink transport, modulation and coding scheme (MCS) to be used for an upcoming sidelink transport, etc. In some aspects, UE 305 can generate sidelink grants that indicate one or more parameters for semi-persistent scheduling (SPS), such as the period of the sidelink transport. Alternatively or concurrently, UE 305 can generate sidelink grants for event-driven scheduling (e.g., for on-demand sidelink messages).

[0060] As pointed out above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0061] Figure 4 This is a schematic diagram illustrating example 400 of sidelink communication and access link communication according to various aspects of this disclosure. (See example 400.) Figure 4 As shown, the transmitter (Tx) / receiver (Rx) UE 405 and the Rx / Tx UE 410 can communicate with each other via a side link, as described above. Figure 3 As described. Further, in some sidelink modes, base station 110 may communicate with Tx / Rx UE 405 via a first access link. Alternatively, in some sidelink modes, base station 110 may communicate with Rx / Tx UE 410 via a second access link. Tx / Rx UE 405 and / or Rx / Tx UE 410 may correspond to one or more UEs described elsewhere herein, such as... Figure 1 UE 120. Therefore, the direct link between UE 120 (e.g., via the PC5 interface) can be referred to as a sidelink, and the direct link between base station 110 and UE 120 (e.g., via the Uu interface) can be referred to as an access link. Sidelink communication can be transmitted via the sidelink, and access link communication can be transmitted via the access link. Access link communication can be downlink communication (from base station 110 to UE 120) or uplink communication (from UE 120 to base station 110).

[0062] As pointed out above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4The example described.

[0063] The sidelink channel can be scheduled by the base station (e.g., mode 1PC5 as defined in the 3GPP specification and / or another standard). Therefore, the base station can send one or more configuration messages to the transmitting (Tx) UE indicating one or more resources (e.g., bandwidth, frequency, timeslots or other time periods and / or spatial filters such as beams) to be used when the Tx UE transmits to the receiving (Rx) UE on the sidelink channel. Alternatively, the sidelink channel can be scheduled by the Tx UE without base station involvement (e.g., mode 2PC5 as defined in the 3GPP specification and / or another standard). Therefore, the Tx UE can send a first SCI (SCI1) to reserve one or more resources for the sidelink channel, and then send a second SCI (SCI2) to schedule a transmission to the Rx UE on that sidelink channel. Tx UEs can be sent to a single Rx UE (e.g., using a unicast link on a sidelink channel), to multiple Rx UEs (e.g., using a multicast link on a sidelink channel, also known as a multicast link) and / or to any Rx UE within a geographic area (e.g., by broadcasting on a sidelink channel).

[0064] In both Mode 1 and Mode 2, the Tx UE can use the LBT procedure on at least one sidelink channel. For example, the Tx UE can wait for one or more symbols of a time slot (e.g., a portion of a radio frame) and only transmit within that time slot (e.g., to the Rx UE) if the Tx UE does not decode the transmission in those one or more symbols. The Tx UE can wait for a pre-configured amount of time or a dynamic amount of time (e.g., determined based on a minimum amount of time, a maximum amount of time, the energy level associated with the transmission, the power level of the Tx UE, the antenna gain associated with the Rx UE, and / or another variable). Therefore, the LBT procedure can include a Carrier Sense Multiple Access (CSMA) procedure, a Free Channel Assessment (CCA) procedure, a Carrier Sense Adaptive Transmission (CSAT) procedure, and / or another similar procedure. For example, a Tx UE may use the LBT procedure as described in standards such as the IEEE LAN / MAN Standards Committee 802.11, the IEEE Wireless Coexistence Technical Advisory Group (TAG) 802.19, the European Telecommunications Standards Institute (ETSI) Harmonized European Standard (EN) 300 328, and / or another standard. A Tx UE may use the LBT procedure at least partially because at least one side link channel is on an unlicensed frequency band channel. For example, at least one side link channel may use NR unlicensed (NR-U) spectrum.

[0065] A Tx UE can detect one or more LBT failures on the sidelink channel. For example, a Tx UE can detect the failure of a CSMA procedure, a CCA procedure, a CSAT procedure, and / or another LBT procedure. However, the Tx UE typically continues to attempt transmission on the sidelink channel (using LBT procedures). Therefore, persistent LBT procedure failures can lead to degraded quality and / or reliability of sidelink communication, as well as increased latency and wasted processing resources.

[0066] Some of the techniques and apparatus described herein enable a Tx UE (e.g., UE 305-1 and / or UE 120) to report one or more LBT failures on a sidelink channel to a base station (e.g., base station 110) and / or at least one Rx UE (e.g., UE 305-2 and / or UE 120). Therefore, in Mode 1, Tx UE 305-1 can obtain one or more new resources from base station 110 for use on the sidelink channel to improve the quality and / or reliability of sidelink communication and save processing resources. In Mode 2, Tx UE 305-1 can report one or more LBT failures to Rx UE 305-2, allowing Rx UE 305-2 to save processing resources. Additionally, in some aspects, Tx UE 305-1 can configure a new sidelink channel with Rx UE 305-2 based at least in part on one or more LBT failures to improve the quality and / or reliability of sidelink communication.

[0067] Figure 5 This is a schematic diagram illustrating an example 500 associated with an LBT failure report for a sidelink channel, according to various aspects of this disclosure. Figure 5 As shown, Example 500 includes communication between Tx UE 305-1 and Rx UE 305-2. In some aspects, Tx UE 305-1 and Rx UE 305-2 can communicate on at least one side link channel (e.g., as described above in conjunction with...). Figure 3 and 4(Described). In some aspects, at least one sidelink channel may include a Physical Sidelink Broadcast Channel (PSBCH), PSCCH, PSSCH, PSFCH, and / or another sidelink channel. In some aspects, TxUE 305-1 may schedule sidelink communication to Rx UE 305-2 without the involvement of a base station (e.g., mode 2PC5 as defined in a 3GPP specification and / or another standard). Alternatively, Example 500 may also include communication between base station 110 and Tx UE 305-1. For example, base station 110 may send one or more configuration messages to Tx UE 305-1 indicating one or more resources (e.g., bandwidth, frequency, timeslot or other time periods, and / or spatial filters such as beams) to be used when transmitting data to Rx UE 305-2 on a sidelink channel. In some aspects, base station 110 and Tx UE 305-1 may be included in a wireless network (such as wireless network 100).

[0068] As shown in conjunction with reference numeral 505 in the accompanying drawings, Tx UE 305-1 can perform at least one LBT procedure. For example, as Figure 5 As shown, when attempting to transmit data to Rx UE 305-2 using at least one first bandwidth on at least one side link channel, Tx UE 305-1 may execute at least one LBT procedure. As described above, at least one LBT procedure may include a CSMA procedure, a CCA procedure, a CSAT procedure, and / or another LBT procedure.

[0069] As shown in conjunction with reference numeral 510, Tx UE 305-1 can detect one or more failures of the LBT process within a certain time period while transmitting data. For example, Tx UE 305-1 can use a counter that detects a threshold number of failures before a timer expires (e.g., the threshold may include an lbt-FailureInstanceMaxCount threshold as defined in 3GPP specifications and / or another standard) (e.g., the timer may include an lbt-FailureDetectionTimer timer as defined in 3GPP specifications and / or another standard). Therefore, whenever Tx UE 305-1 detects a failure of the LBT process, Tx UE 305-1 can increment the counter such that when the counter meets the threshold, Tx UE 305-1 triggers one or more steps, as described in conjunction with reference numerals 515a, 515b, 520a, 520b and / or 525. Tx UE 305-1 can reset the counter when the timer expires (e.g., if no further failures of the LBT process are detected within that time period).

[0070] In some aspects, base station 110 can transmit and Tx UE 305-1 can receive at least one configuration message, and the time amount and / or threshold can be at least partially based on at least one configuration message. For example, base station 110 can indicate the time amount and / or threshold for use by Tx UE 305-1. Alternatively or additionally, the time amount and / or threshold can be at least partially based on one or more values ​​stored in the memory of Tx UE 305-1. For example, Tx UE 305-1 can be programmed (and / or otherwise pre-configured) to use one or more values ​​defined in 3GPP specifications and / or another standard. In another example, Tx UE 305-1 can select one or more values ​​from a plurality of values ​​defined in 3GPP specifications and / or another standard. The Tx UE 305-1 can use a lookup table and / or another formula to select one or more values, said formula taking one or more indicators for the quality of at least one sidelink channel, one or more indicators for the target throughput of at least one sidelink channel, one or more transmission variables (e.g., transmit power, transmit distance) and / or other variables as input, and outputting the amount of time to be used and / or a threshold. In another example, base station 110 can indicate (e.g., in at least one configuration message) one or more values ​​from a plurality of values ​​defined in 3GPP specifications and / or another standard for use by the Tx UE 305-1.

[0071] Alternatively or concurrently, Rx UE 305-2 may send and Tx UE 305-1 may receive at least one configuration message, and the time amount and / or threshold may be at least partially based on at least one configuration message. For example, Rx UE 305-2 may indicate the time amount and / or threshold for use by Tx UE 305-1. In another example, Rx UE 305-2 may indicate (e.g., in at least one configuration message) one or more values ​​from a plurality of values ​​defined in 3GPP specifications and / or another standard for use by Tx UE 305-1. In another example, Tx UE 305-1 may determine to ignore at least one configuration message and select one or more values ​​to be used for the time amount and / or threshold (e.g., using the formula described above or another technique).

[0072] In some respects, an LBT procedure (e.g., performed as described above in conjunction with reference to figure 505) may fail, causing Tx UE 305-1 to attempt one or more retransmissions. Therefore, at least one LBT procedure may include multiple LBT procedures associated with transmission and at least one retransmission.

[0073] In some aspects, one or more failures may be associated with at least one unicast link to at least Rx UE 305-2, a multicast link to at least Rx UE 305-2, and / or another link to at least Rx UE 305-2. Tx UE 305-1 may aggregate LBT failures across unicast links to one or more UEs and / or across multicast links to multiple UEs. Alternatively, Tx UE 305-1 may detect LBT failures individually on different unicast links and / or individually on different multicast links. Although the following description will focus on sidelink communication with Rx UE 305-2, Tx UE 305-1 may aggregate LBT failures occurring during transmissions to Rx UE 305-2 with LBT failures occurring during transmissions to other UEs. Alternatively, Tx UE 305-1 may detect LBT failures occurring individually during transmissions to different UEs.

[0074] Alternatively, one or more failures can be aggregated across one or more PSBCHs, one or more PSCCHs, one or more PSCCHs, one or more PSFCHs, and / or one or more other sidelink channels. For example, such channels may share links, RB sets, bandwidth portions (BWPs), and / or one or more other resources within the same UE, allowing Tx UE 305-1 to aggregate LBT failures for these channels. In some aspects, when Tx UE 305-1 operates in Mode 2, it may aggregate LBT failures associated with transmissions of SCI1 with LBT failures associated with transmissions of SCI2. Alternatively, Tx UE 305-1 may detect LBT failures associated with transmissions of SCI1 separately from detecting LBT failures associated with transmissions of SCI2.

[0075] Alternatively or alternatively, one or more failures can be aggregated across RB sets, BWPs, and / or multiple sidelink channels. For example, Tx UE 305-1 can aggregate LBT failures occurring on one RB set with LBT failures occurring on one or more other RB sets. Alternatively or alternatively, Tx UE 305-1 can aggregate LBT failures occurring on one BWP with LBT failures occurring on one or more other BWPs. Alternatively or alternatively, Tx UE 305-1 can aggregate LBT failures occurring on one sidelink channel with LBT failures occurring on one or more other sidelink channels. In some aspects, Tx UE 305-1 can also aggregate LBT failures across unicast links and / or multicast links, as described above.

[0076] Alternatively, aggregation of one or more failures can be performed across the PC5 interface of at least one sidelink channel and the Uu interface with base station 110. For example, the Uu interface can share one or more carriers and / or RB sets with the PC5 interface, allowing Tx UE 305-1 to aggregate LBT failures for these one or more carriers and / or RB sets across the PC5 interface and the Uu interface.

[0077] Alternatively, one or more failures may be associated with one of multiple aggregated carriers. For example, Tx UE 305-1 may use one or more carriers associated with a primary cell (PCell), which is aggregated with one or more carriers associated with one or more secondary cells (SCells). Therefore, Tx UE 305-1 can aggregate LBT failures across carriers, or it can detect LBT failures individually. For example, Tx UE 305-1 can detect LBT failures individually for each carrier or individually for each carrier associated with a different SCell.

[0078] In some aspects, the timing amount and / or threshold may be based at least in part on: whether one or more failures are associated with at least one unicast link, multicast link, and / or broadcast transmission; whether one or more failures are associated with PSBCH, PSCCH, PSSCH, PSFCH, and / or the other side of the link channel; which RB set and / or BWP is associated with one or more failures; whether one or more failures are associated with the PC5 interface and / or Uu interface; and / or which carrier and / or SCell is associated with one or more failures. For example, base station 110 may transmit different values ​​of timing amount and / or threshold based at least in part on one or more of the above factors, and / or Tx UE 305-1 may select different values ​​of timing amount and / or threshold based at least in part on one or more of the above factors.

[0079] In some respects, Tx UE 305-1 may also cancel pending transmissions at least in part based on the detection of one or more failures, and / or stop transmitting one or more broadcast signals (e.g., PSBCH transmission, side link synchronization signal block (S-SSB), and / or another broadcast signal) at least in part based on the detection of one or more failures.

[0080] As shown with reference to reference numeral 515a in the accompanying drawings, Tx UE 305-1 can transmit and base station 110 can receive reports indicating one or more failures. For example, Tx UE 305-1 can transmit and base station 110 can receive a Media Access Control (MAC) layer control element (MAC-CE) including the report. In some aspects, at least one sidelink channel may include a base station-controlled sidelink channel, such that Tx UE 305-1 transmits a report to base station 110.

[0081] In some aspects, one or more failures can be associated with one or more carriers associated with one or more SCells. Therefore, Tx UE 305-1 can send a SidelinkUEInformationNR message as defined in 3GPP specifications and / or another standard, which includes a reason value set to "LBT failure" and one or more identifiers (e.g., cell ID) associated with one or more SCells. Alternatively, one or more failures can be associated with one or more carriers associated with a PCell. Therefore, Tx UE 305-1 can declare a radio link failure (RLF) on at least one sidelink channel and send a SidelinkUEInformationNR as defined in 3GPP specifications and / or another standard, which includes a reason value set to "LBT failure".

[0082] In some aspects, Tx UE 305-1 may select a Uu cell, including base station 110, to receive reports based at least in part on the correspondence between a PC5 interface associated with at least one sidelink channel and a Uu interface associated with a Uu cell. For example, the Uu interface may share one or more carriers and / or RB sets with the PC5 interface, such that a correspondence exists between the PC5 interface and the Uu interface.

[0083] In some respects, the report may also indicate whether one or more failures are associated with at least one unicast link, multicast link, and / or broadcast transmission; whether one or more failures are associated with PSBCH, PSCCH, PSSCH, PSFCH, and / or the other side of the link channel; which RB set and / or BWP is associated with one or more failures; and / or whether one or more failures are associated with the PC5 interface and / or the Uu interface.

[0084] Alternatively or concurrently, and as indicated by reference numeral 515b in the accompanying drawings, Tx UE 305-1 may transmit and Rx UE 305-2 may receive reports indicating one or more failures. For example, Tx UE 305-1 may transmit reports on different sidelink channels, and Rx UE 305-2 may receive reports on different sidelink channels.

[0085] In some aspects, Tx UE 305-1 may not be able to send reports directly to Rx UE 305-2 (e.g., because no other sidelink channel is established, or other sidelink channels also encounter LBT failure). Therefore, in some aspects, Tx UE 305-1 may send reports to the trunk UE on the sidelink channel between Tx UE 305-1 and the trunk UE, and the trunk UE may forward reports to Rx UE 305-2 on the sidelink channel between the trunk UE and Rx UE 305-2.

[0086] In some aspects, and as shown in conjunction with reference numeral 520a, base station 110 may transmit and Tx UE 305-1 may receive an indication of at least one second bandwidth to be used on at least one side link channel. For example, base station 110 may determine at least one second bandwidth based at least in part on a received report (e.g., as described above in conjunction with reference numeral 515a), and may transmit an updated configuration indicating at least one second bandwidth for at least one side link channel.

[0087] As an alternative, and as illustrated in conjunction with reference numeral 520b, Tx UE 305-1 may determine at least one second bandwidth to be used on at least one side link channel. For example, Tx UE 305-1 may determine at least one second bandwidth based at least in part on the detection of one or more failures, and may send a new SCI (e.g., SCI1) to reserve at least one second bandwidth for transmission to Rx UE 305-2.

[0088] As shown in conjunction with reference numeral 525, Tx UE 305-1 can re-execute at least one LBT procedure. For example, as Figure 5 As shown, when attempting to retransmit data to Rx UE 305-2 using at least one second bandwidth on at least one side link channel, Tx UE 305-1 can perform at least one LBT procedure. Therefore, when the LBT procedure is successful, Tx UE 305-1 can retransmit data to Rx UE 305-2 using at least one second bandwidth on at least one side link channel.

[0089] By using combination Figure 5According to the described technology, Tx UE 305-1 can report one or more LBT failures on the sidelink channel to base station 110 and / or Rx UE 305-2. Therefore, in Mode 1, Tx UE 305-1 can obtain one or more new resources from base station 110 to use on the sidelink channel, thereby improving the quality and / or reliability of sidelink communication with Rx UE 305-2 and saving processing resources. In Mode 2, Tx UE 305-1 can report one or more LBT failures to Rx UE 305-2, allowing Rx UE 305-2 to save processing resources. Additionally, in some aspects, Tx UE 305-1 can configure a new sidelink channel with Rx UE 305-2 based at least in part on one or more LBT failures, thereby improving the quality and / or reliability of sidelink communication with Rx UE 305-2.

[0090] As pointed out above, Figure 5 This is provided as an example. Other examples may differ from the one provided. Figure 5 The example described.

[0091] Figure 6 This is a schematic diagram illustrating, for example, an example process 600 performed by a UE according to various aspects of this disclosure. Example process 600 is where the UE (e.g., Figure 8 Examples of operations performed by devices 800, Tx UE 305-1 and / or UE 120 that are associated with LBT failure reporting for side link channels.

[0092] like Figure 6 As shown, in some aspects, process 600 may include: detecting one or more failures of the LBT process within a time period (block 610) when transmitting data to at least one other UE using at least one first bandwidth on at least one side link channel. For example, the UE (e.g., using...) Figure 8 The detection component 808 described herein can detect one or more failures of the LBT process within a time period, as described above.

[0093] like Figure 6 As further shown, in some aspects, process 600 may include: sending data to a base station (e.g., Figure 9 The device 900 and / or base station 110) or at least one of at least one other UE sends a report indicating one or more failures (box 620). For example, the UE (e.g., using) Figure 8 The sending component 804 described herein can send reports indicating one or more failures, as described above.

[0094] Process 600 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other process descriptions elsewhere described herein.

[0095] In the first aspect, at least one sidelink channel includes a base station-controlled sidelink channel, and a report is sent to the base station.

[0096] In the second aspect, either alone or in combination with the first aspect, process 600 further includes: retransmitting data to at least one other UE using at least one second bandwidth on at least one side link channel (e.g., using transmission component 804).

[0097] In the third aspect, either alone or in combination with one or more of the first and second aspects, at least one side link channel includes PSBCH, PSCCH, PSSCH, PSFCH, or a combination thereof.

[0098] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, one or more failures are associated with at least one unicast link to at least one other UE, a multicast link to at least one other UE, or a combination thereof.

[0099] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the time amount is at least partially based on whether one or more failures are associated with at least one unicast link or with a multicast link.

[0100] In the sixth aspect, either alone or in combination with one or more aspects from the first to the fifth aspects, one or more failures are aggregated across the RB set, BWP, or multiple side link channels.

[0101] In the seventh aspect, either alone or in combination with one or more aspects from the first to the sixth aspects, one or more failures are aggregated across the PC5 interface for at least one side link channel and the Uu interface with the base station.

[0102] In the eighth aspect, either alone or in combination with one or more aspects from the first to the seventh aspects, process 600 further includes: receiving at least one configuration message from the base station (e.g., using...). Figure 8 The receiving component 802 described herein, and the time quantity is at least partially based on at least one configuration message.

[0103] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the time quantity is at least partially based on values ​​stored in memory.

[0104] In the tenth aspect, either alone or in combination with one or more aspects from the first to the ninth aspects, one or more failures are associated with one of the multiple aggregated carriers.

[0105] In the eleventh aspect, either alone or in combination with one or more aspects from the first to the tenth aspects, process 600 further includes: canceling pending transmissions at least in part based on the detection of one or more failures (e.g., using...). Figure 8 The scheduling component 810 depicted in the diagram; and the stopping of transmitting one or more broadcast signals based at least in part on the detection of one or more failures (e.g., using the transmitting component 804).

[0106] In the twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, the report is sent to at least one other UE.

[0107] Although Figure 6 An example box of process 600 is shown, but in some aspects, process 600 may include... Figure 6 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 600 may be executed in parallel.

[0108] Figure 7 This is a schematic diagram illustrating, for example, an example process 700 performed by a base station according to various aspects of this disclosure. Example process 700 is where a base station (e.g., Figure 9 An example of the device 900 and / or base station 110 performing operations associated with LBT failure reporting for the side link channel.

[0109] like Figure 7 As shown, in some aspects, process 700 may include: from the UE (e.g., Figure 8 The device 800, Tx UE305-1, and / or UE 120 receive reports (box 710) indicating one or more failures of an LBT process associated with at least one first bandwidth on at least one side link channel. For example, the base station (e.g., using...) Figure 9 The receiving component 902 depicted can receive one or more reports indicating failures in the LBT process, as described above.

[0110] like Figure 7 As further shown, in some aspects, process 700 may include: sending an indication to the UE of at least one second bandwidth to be used on at least one side link channel (box 720). For example, the base station (e.g., using...) Figure 9 The transmitting component 904 depicted can transmit an indication of at least one second bandwidth to be used, as described above.

[0111] Process 700 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other process descriptions elsewhere described herein.

[0112] In the first aspect, at least one side link channel includes PSBCH, PSCCH, PSSCH, PSFCH, or a combination thereof.

[0113] In the second aspect, either alone or in combination with the first aspect, one or more failures are associated with at least one unicast link between the UE and at least one other UE, a multicast link between the UE and at least one other UE, or a combination thereof.

[0114] In the third aspect, either alone or in combination with one or more aspects of the first and second aspects, one or more failures are associated with a time quantity that is at least partially based on whether the one or more failures are associated with at least one unicast link or with a multicast link.

[0115] In the fourth aspect, either alone or in combination with one or more aspects from the first to the third aspect, one or more failures are aggregated across the RB set, BWP, or multiple side link channels.

[0116] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, one or more failures are aggregated across the PC5 interface for at least one side link channel and the Uu interface with the base station.

[0117] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 700 further includes: sending at least one configuration message to the UE (e.g., using transmission component 904), and one or more failures are associated with a time amount based at least in part on the at least one configuration message.

[0118] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, one or more failures are associated with a time amount based at least in part on values ​​stored in memory.

[0119] In the eighth aspect, either alone or in combination with one or more aspects from the first to the seventh aspects, one or more failures are associated with one of the multiple aggregated carriers.

[0120] Although Figure 7 An example box of process 700 is shown, but in some aspects, process 700 may include... Figure 7The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 700 may be executed in parallel.

[0121] Figure 8 This is a block diagram of an example device 800 for wireless communication. Device 800 may be a UE, or a UE may include device 800. In some aspects, device 800 includes a receiving component 802 and a transmitting component 804, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 800 can use the receiving component 802 and the transmitting component 804 to communicate with another device 806 (such as a UE, a base station, or another wireless communication device). As further shown, device 800 may include one or more of a detection component 808 or a scheduling component 810, and other examples.

[0122] In some respects, device 800 can be configured to perform the functions described herein. Figure 5 One or more operations described herein. Alternatively or concurrently, the apparatus 800 may be configured to perform one or more processes described herein, such as... Figure 6 The process 600 or a combination thereof. In some respects, Figure 8 The device 800 and / or one or more components shown may include the elements described above. Figure 2 One or more components of the UE as described. Alternatively or in addition, Figure 8 One or more components shown can be combined with the above. Figure 2 The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0123] Receiver 802 may receive communications from device 806, such as reference signals, control information, data communications, or combinations thereof. Receiver 802 may provide the received communications to one or more other components of device 800. In some aspects, receiver 802 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 806. In some aspects, receiver 802 may include the elements described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0124] Transmitting component 804 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 806. In some aspects, one or more other components of device 806 can generate communications and provide the generated communications to transmitting component 804 for transmission to device 806. In some aspects, transmitting component 804 can perform signal processing on the generated communications (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples), and can transmit the processed signals to device 806. In some aspects, transmitting component 804 can include the combinations described above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 804 may be co-located with the receive component 802 in a transceiver.

[0125] In some aspects, when the transmitting component 804 transmits data to at least one other UE using at least one first bandwidth on at least one side link channel, the detection component 808 can detect one or more failures of the LBT process within a certain time period. In some aspects, the detection component 808 may include the combination of the above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof. Therefore, transmitting component 804 can send a report indicating one or more failures to device 806 or at least one of at least one other UE. In some aspects, transmitting component 804 can also retransmit data to at least one other UE using at least one second bandwidth on at least one sidelink channel.

[0126] In some aspects, receiving component 802 may receive at least one configuration message from device 806, such that the time amount is at least partially based on at least one configuration message.

[0127] In some aspects, scheduling component 810 may cancel pending transmissions at least in part based on detection component 808 detecting one or more failures. In some aspects, scheduling component 810 may include the combination of the above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. Additionally or alternatively, the transmitting component 804 may stop transmitting one or more broadcast signals, at least in part, based on the detection component 808 detecting one or more failures.

[0128] Figure 8 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 8The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 8 The two or more components shown can be implemented within a single component, or Figure 8 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 8 The set (one or more) components shown can perform actions described by Figure 8 The other set of components shown performs one or more functions.

[0129] Figure 9 This is a block diagram of an example device 900 for wireless communication. Device 900 may be a base station, or a base station may include device 900. In some aspects, device 900 includes a receiving component 902 and a transmitting component 904, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 900 can use the receiving component 902 and the transmitting component 904 to communicate with another device 906 (such as a UE, a base station, or another wireless communication device). As further shown, device 900 may include a determining component 908 and other examples.

[0130] In some respects, device 900 can be configured to perform the functions described herein. Figure 5 One or more operations described herein. Alternatively or concurrently, device 900 may be configured to perform one or more processes described herein, such as... Figure 7 The process 700 or a combination thereof. In some respects, Figure 9 The device 900 and / or one or more components shown may include the above-described components. Figure 2 One or more components of the described base station. Alternatively, Figure 9 One or more components shown can be combined with the above. Figure 2 The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0131] Receiver 902 may receive communications from device 906, such as reference signals, control information, data communications, or combinations thereof. Receiver 902 may provide the received communications to one or more other components of device 900. In some aspects, receiver 902 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 906. In some aspects, receiver 902 may include the combinations described above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0132] Transmitting component 904 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 906 can generate communications and provide the generated communications to transmitting component 904 for transmission to device 906. In some aspects, transmitting component 906 can perform signal processing on the generated communications (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples), and can transmit the processed signal to device 906. In some aspects, transmitting component 904 can include the combinations described above. Figure 2 The described base station includes one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof. In some aspects, the transmit component 904 may be co-located with the receive component 902 in a transceiver.

[0133] In some aspects, receiving component 902 can receive from device 906 one or more reports indicating failures of an LBT process associated with at least one first bandwidth on at least one side crosslink channel. Therefore, transmitting component 904 can send to device 906 an indication of at least one second bandwidth to be used on at least one side crosslink channel. For example, determining component 908 can determine at least one second bandwidth based at least in part on the reports. In some aspects, determining component 908 can include the above-described combination of... Figure 2 The described base station includes a receiver processor, a transmitter processor, a controller / processor, a memory, or a combination thereof.

[0134] In some aspects, the transmitting component 904 may send at least one configuration message to the device 906, and one or more failures may be associated with at least part of the time amount based on at least one configuration message.

[0135] Figure 9The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 9 The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 9 The two or more components shown can be implemented within a single component, or Figure 9 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 9 The set (one or more) components shown can perform actions described by Figure 9 The other set of components shown performs one or more functions.

[0136] The following provides a summary of some aspects of this disclosure:

[0137] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: detecting one or more failures of a Listen-Before-Speak (LBT) process within a time quantity when transmitting data to at least one other UE using at least one first bandwidth on at least one side link channel; and transmitting a report indicating the one or more failures to a base station or at least one of the at least one other UE.

[0138] Aspect 2: According to the method of aspect 1, wherein the at least one side link channel includes a base station-controlled side link channel, and the report is sent to the base station.

[0139] Aspect 3: The method according to any one of Aspects 1 to 2 further includes: retransmitting the data to the at least one other UE using at least one second bandwidth on the at least one side link channel.

[0140] Aspect 4: The method according to any one of Aspects 1 to 3, wherein the at least one side link channel includes a physical side link broadcast channel (PSBCH), a physical side link control channel (PSCCH), a physical side link sharing channel (PSSCH), a physical side link feedback channel (PSFCH), or a combination thereof.

[0141] Aspect 5: The method according to any one of Aspects 1 to 4, wherein the one or more failures are associated with at least one unicast link to the at least one other UE, a multicast link to the at least one other UE, or a combination thereof.

[0142] Aspect 6: The method according to any one of Aspects 1 to 5, wherein the time amount is at least partially based on whether the one or more failures are associated with at least one unicast link or with a multicast link.

[0143] Aspect 7: The method according to any one of Aspects 1 to 6, wherein the one or more failures are aggregated across a set of resource blocks (RBs), bandwidth portions (BWPs), or multiple sidelink channels.

[0144] Aspect 8: The method according to any one of Aspects 1 to 7, wherein the one or more failures are aggregated across the PC5 interface for the at least one side link channel and the Uu interface with the base station.

[0145] Aspect 9: The method according to any one of Aspects 1 to 8 further includes: receiving at least one configuration message from the base station, wherein the time quantity is at least partially based on the at least one configuration message.

[0146] Aspect 10: The method according to any one of aspects 1 to 9, wherein the time quantity is at least partially based on a value stored in the memory.

[0147] Aspect 11: The method according to any one of aspects 1 to 10, wherein the one or more failures are associated with one of a plurality of aggregated carriers.

[0148] Aspect 12: The method according to any one of aspects 1 to 11 further includes: canceling pending transmissions at least in part based on the detection of the one or more failures; and stopping the transmission of one or more broadcast signals at least in part based on the detection of the one or more failures.

[0149] Aspect 13: The method according to any one of aspects 1 to 12, wherein the report is sent to the at least one other UE.

[0150] Aspect 14: A method of wireless communication performed by a base station, comprising: receiving from a UE a report indicating one or more failures of an LBT process associated with at least one first bandwidth on at least one side link channel; and sending to the UE an indication of at least one second bandwidth to be used on the at least one side link channel.

[0151] Aspect 15: The method according to aspect 14, wherein the at least one side link channel includes PSBCH, PSCCH, PSSCH, PSFCH, or a combination thereof.

[0152] Aspect 16: The method according to any one of Aspects 14 to 15, wherein the one or more failures are associated with at least one unicast link between the UE and at least one other UE, a multicast link between the UE and at least one other UE, or a combination thereof.

[0153] Aspect 17: The method according to any one of Aspects 14 to 16, wherein the one or more failures are associated with a time quantity, the time quantity being at least in part based on whether the one or more failures are associated with at least one unicast link or with a multicast link.

[0154] Aspect 18: The method according to any one of Aspects 14 to 17, wherein the one or more failures are aggregated across an RB set, BWP, or multiple sidelink channels.

[0155] Aspect 19: The method according to any one of Aspects 14 to 18, wherein the one or more failures are aggregated across the PC5 interface for the at least one side link channel and the Uu interface with the base station.

[0156] Aspect 20: The method according to any one of aspects 14 to 19 further includes: sending at least one configuration message to the UE, wherein the one or more failures are associated with at least a portion of the time based on the at least one configuration message.

[0157] Aspect 21: The method according to any one of aspects 14 to 20, wherein the one or more failures are associated with an amount of time based at least in part on the value stored in the memory.

[0158] Aspect 22: The method according to any one of aspects 14 to 21, wherein the one or more failures are associated with one of a plurality of aggregated carriers.

[0159] Aspect 23: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 1-13.

[0160] Aspect 24: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method according to one or more of aspects 1-13.

[0161] Aspect 25: An apparatus for wireless communication, comprising at least one unit for performing the method according to one or more of aspects 1-13.

[0162] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by a processor to perform the methods described in accordance with one or more of aspects 1-13.

[0163] Aspect 27: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform the method according to one or more aspects of aspects 1-13.

[0164] Aspect 28: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 14-22.

[0165] Aspect 29: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method according to one or more aspects of aspects 14-22.

[0166] Aspect 30: An apparatus for wireless communication, comprising at least one unit for performing the method according to one or more aspects 14-22.

[0167] Aspect 31: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by a processor to perform the methods described in one or more of aspects 14-22.

[0168] Aspect 32: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform the method according to one or more aspects of aspects 14-22.

[0169] The above disclosure provides illustrations and descriptions, but is not intended to be exhaustive, nor is it intended to limit these aspects to the precise form disclosed. Modifications and variations may be made based on the above disclosure, or from practice in these aspects.

[0170] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, "software" should be interpreted broadly to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, programs and / or functions, and other examples. As used herein, processors are implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of systems and / or methods are described herein without reference to any specific software code—it is to be understood that software and hardware can be designed to implement systems and / or methods, at least in part, based on the descriptions herein.

[0171] As used in this article, depending on the context, satisfying the threshold can refer to a value that is greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0172] Although combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the aspects. In fact, many of these features can be combined in ways not specifically set forth in the claims and / or not disclosed in the specification. While each dependent claim listed below depends directly on only one claim, the disclosure of the aspects includes each dependent claim in combination with every other claim in the group of claims. As used herein, the phrase “at least one of” for a list item refers to any combination of these items (including a single member). For example, “at least one of a, b, or c” is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0173] No element, action, or instruction used in this application should be construed as critical or fundamental unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and may be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with “one or more.” If only one item is desired, the phrase “only one” or similar terminology will be used. Furthermore, as used herein, the terms “has,” “have,” “having,” etc., are intended to be open-ended terms. Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Furthermore, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “any” or “only one of”).

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors are operatively coupled to the memory, and the memory and the one or more processors are configured to: When transmitting data to at least one other UE using at least one first bandwidth on at least one sidelink channel, one or more failures of the Listen-Before-Speak (LBT) process are detected within a time quantity, wherein the time quantity is at least partially based on whether the one or more failures are associated with at least one unicast link or with a multicast link; as well as Send a report indicating the one or more failures to the network node or at least one of the other UEs.

2. The UE of claim 1, wherein, The at least one sidelink channel includes a sidelink channel controlled by the network node, and the report is sent to the network node.

3. The UE of claim 1, wherein, The memory and the one or more processors are further configured to: The data is retransmitted to the at least one other UE using at least one second bandwidth on the at least one side link channel.

4. The UE of claim 1, wherein, The at least one side link channel includes the Physical Side Link Broadcast Channel (PSBCH), the Physical Side Link Control Channel (PSCCH), the Physical Side Link Shared Channel (PSSCH), the Physical Side Link Feedback Channel (PSFCH), or a combination thereof.

5. The UE of claim 1, wherein, The one or more failures are associated with at least one unicast link to the at least one other UE, a multicast link to the at least one other UE, or a combination thereof.

6. The UE of claim 1, wherein, The one or more failures are aggregated across a set of resource blocks (RBs), bandwidth portions (BWPs), or multiple sidelink channels.

7. The UE of claim 1, wherein, The one or more failures are aggregated across the PC5 interface used for the at least one side link channel and the Uu interface with the network node.

8. The UE according to claim 1, wherein, The memory and the one or more processors are further configured to: Receive at least one configuration message from the network node, wherein the time quantity is at least partially based on the at least one configuration message.

9. The UE according to claim 1, wherein, The time quantity is at least partially based on the value stored in the memory.

10. The UE according to claim 1, wherein, The one or more failures are associated with one of the multiple aggregated carriers.

11. The UE according to claim 1, wherein, The memory and the one or more processors are further configured to: Cancel pending transmissions at least in part based on the detection of one or more of the aforementioned failures; and The transmission of one or more broadcast signals may be stopped, at least in part, based on the detection of one or more of the aforementioned failures.

12. The UE according to claim 1, wherein, The report is sent to the at least one other UE.

13. A network node for wireless communication, comprising: Memory; as well as One or more processors are operatively coupled to the memory, and the memory and the one or more processors are configured to: Receive reports from a user equipment (UE) indicating one or more failures of a Listen-Before-Speak (LBT) procedure associated with at least one first bandwidth on at least one sidelink channel within a time period, wherein the time period is at least in part based on whether the one or more failures are associated with at least one unicast link or with a multicast link; as well as Send an indication to the UE of at least one second bandwidth to be used on the at least one side link channel.

14. The network node according to claim 13, wherein, The at least one side link channel includes the Physical Side Link Broadcast Channel (PSBCH), the Physical Side Link Control Channel (PSCCH), the Physical Side Link Shared Channel (PSSCH), the Physical Side Link Feedback Channel (PSFCH), or a combination thereof.

15. The network node according to claim 13, wherein, The one or more failures are associated with at least one unicast link between the UE and at least one other UE, a multicast link between the UE and at least one other UE, or a combination thereof.

16. The network node according to claim 13, wherein, The one or more failures are associated with the amount of time.

17. The network node according to claim 13, wherein, The one or more failures are aggregated across a set of resource blocks (RBs), bandwidth portions (BWPs), or multiple sidelink channels.

18. The network node according to claim 13, wherein, The one or more failures are aggregated across the PC5 interface used for the at least one side link channel and the Uu interface with the network node.

19. The network node according to claim 13, wherein, The memory and the one or more processors are further configured to: At least one configuration message is sent to the UE, wherein the one or more failures are associated with at least a portion of the time based on the at least one configuration message.

20. The network node according to claim 13, wherein, The one or more failures are associated with an amount of time based at least in part on the values ​​stored in the memory.

21. The network node according to claim 13, wherein, The one or more failures are associated with one of the multiple aggregated carriers.

22. A method for wireless communication performed by a user equipment (UE), comprising: When transmitting data to at least one other UE using at least one first bandwidth on at least one sidelink channel, one or more failures of a Listen-Before-Speak (LBT) procedure are detected within a time quantity, wherein the time quantity is at least partially based on whether the one or more failures are associated with at least one unicast link or with a multicast link; and Send a report indicating the one or more failures to the network node or at least one of the other UEs.

23. The method according to claim 22, wherein, The at least one sidelink channel includes a sidelink channel controlled by the network node, and the report is sent to the network node.

24. The method of claim 22, further comprising: The data is retransmitted to the at least one other UE using at least one second bandwidth on the at least one side link channel.

25. The method according to claim 22, wherein, The one or more failures are aggregated across a set of resource blocks (RBs), bandwidth portions (BWPs), or multiple sidelink channels.

26. The method according to claim 22, wherein, The one or more failures are aggregated across the PC5 interface used for the at least one side link channel and the Uu interface with the network node.

27. The method according to claim 22, wherein, The one or more failures are associated with one of the multiple aggregated carriers.

28. The method of claim 22, further comprising: The pending transmission is cancelled at least in part based on the detection of one or more of the aforementioned failures; as well as The transmission of one or more broadcast signals may be stopped, at least in part, based on the detection of one or more of the aforementioned failures.

29. A method for wireless communication performed by a network node, comprising: Receive reports from the user equipment (UE) indicating one or more failures of a Listen-Before-Speak (LBT) procedure associated with at least one first bandwidth on at least one sidelink channel within a time period, wherein the time period is at least in part based on whether the one or more failures are associated with at least one unicast link or with a multicast link; and Send an indication to the UE of at least one second bandwidth to be used on the at least one side link channel.

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