Discontinuous transmission during shared channel occupancy time for sidelink communication in unlicensed spectrum

Abstract

Various aspects of this disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit a first communication in a first time slot within a channel occupied time (COT); determine whether one or more transmission criteria are satisfied for the transmission of a second communication in a second time slot within the COT; and selectively transmit the second communication in the second time slot within the COT, at least in part based on the result of determining whether the one or more transmission criteria are satisfied. Many other aspects are provided.

Description

[0001] Cross-reference to related applications

[0002] This patent application claims priority to Greek patent application No. 20200100370, filed on June 24, 2020, entitled “DISCONTINUOUS TRANSMISSION IN SHARED CHANNEL OCCUPANCY TIME FOR SIDELINK COMMUNICATION IN UNLICENSEDSPECTRUM”, assigned to its assignee. The disclosure of the prior application is considered part of this patent application and is incorporated herein by reference. Technical Field

[0003] Various aspects of this disclosure generally relate to wireless communication, and specifically to techniques and apparatus for discontinuous transmission during shared channel occupancy time for side link communication in unlicensed spectrum. Background Technology

[0004] Wireless communication systems are 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 can support communication with multiple users by sharing available system resources (such as bandwidth and transmission power). 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 / LTE-Advanced is a collection of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard released by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more base stations that support communication between a user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink and uplink communication. "Downlink" (or "DL") refers to the communication link from the base station to the UE, while "uplink" (or "UL") refers to the communication link from the UE to the base station.

[0006] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different UEs to communicate at the municipal, national, regional, and / or global levels. NR, which can be referred to as 5G, is a collection of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, reducing costs, improving service, utilizing new spectrum, and better integrating with other open standards. This open standard uses Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink and CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink, and supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to increase. Summary of the Invention

[0007] In some communication systems, user equipment (UE) can perform a channel sensing process to determine whether a channel is available for communication. To determine whether a resource is available on the channel, the UE can monitor and decode transmissions on the channel and measure the channel. If the resource has not been reserved or if the resource has been reserved by another UE but the measurement associated with that other UE is below a threshold, then the resource can be classified as available.

[0008] When a packet arrives for transmission (or when resource selection has been triggered), the UE can determine the sensing window (in the past), at least in part based on the decoding and measurement of the sensing window, to determine the use of the sensing window and the resource reservation indicated by the side link control information (SCI) decoded in the sensing window, and identify subsequent available resources in the resource selection window (in the future). The UE can select resources from those already identified as available in the resource selection window.

[0009] When multiple UEs share a set of resources in unlicensed spectrum used for sidelink communication, the resource set can be defined by channel occupancy associated with channel occupancy time (COT). In this case, the first UE can use a channel sensing procedure to select resources and reserve resources for channel occupancy. The first UE can remain in channel occupancy for the period defined by COT. During the channel occupancy time, the first UE can dedicate specific resources or selectively share those specific resources with other UEs.

[0010] However, in some cases, a UE may have packets or transport blocks for transmission, but may not be configured to transmit packets or transport blocks using a contiguous set of resources. In these cases, the configuration of channel occupancy and associated COT can prevent the UE from transmitting, for example, without reacquiring channel occupancy.

[0011] Some aspects described herein enable discontinuous transmission for sidelink communication in unlicensed spectrum. For example, after transmission in a first time slot, the UE can transmit in a second time slot that is discontinuous with the first time slot. Whether the UE can transmit in the second time slot without reacquiring channel occupancy can be based at least in part on whether the UE has already performed channel sensing techniques in the second time slot, the transmission priority of the transmission in the second time slot, whether the transmission in the second time slot is a retransmission, or the congestion level measured in the sidelink channel, etc. In this way, even if the resources are discontinuous with those in the first time slot, the UE can determine that resources are available for transmission in the second time slot within the channel occupancy. Furthermore, by transmitting in the second time slot at least in part based on determining that one or more transmission criteria are met, the UE avoids interference with other UEs or other devices, thereby avoiding dropped communication.

[0012] In some aspects, a wireless communication method performed by a UE includes: transmitting a first communication in a first time slot within a COT; determining whether the transmission of a second communication in a second time slot within the COT satisfies one or more transmission criteria; and selectively transmitting the second communication in the second time slot within the COT based at least in part on the result of determining whether the one or more transmission criteria are satisfied.

[0013] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to: transmit a first communication in a first time slot within a COT; determine whether the transmission of a second communication in a second time slot within the COT satisfies one or more transmission criteria; and selectively transmit the second communication in the second time slot within the COT based at least in part on the result of determining whether the one or more transmission criteria are satisfied.

[0014] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the one or more processors to: transmit a first communication in a first time slot within a COT; determine whether the transmission of a second communication in a second time slot within a COT satisfies one or more transmission criteria; and selectively transmit the second communication in the second time slot within a COT based at least in part on the result of determining whether the one or more transmission criteria are satisfied.

[0015] In some aspects, an apparatus for wireless communication includes: means for transmitting a first communication in a first time slot within a COT; means for determining whether one or more transmission criteria are met for the transmission of a second communication in a second time slot within the COT; and means for selectively transmitting the second communication in the second time slot within the COT, at least in part based on the result of determining whether one or more transmission criteria are met.

[0016] The aspects generally include, as described herein with reference to the accompanying drawings and description, methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems.

[0017] The foregoing has provided a fairly broad overview of the features and technical advantages of the examples according to this disclosure in order to better understand the detailed description that follows. Additional 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 for achieving the same purpose of this disclosure. Such equivalent structures do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, their organization and operation, along with their associated advantages, will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the figures is provided for illustrative and descriptive purposes and not as a definition of limitation of the claims.

[0018] While aspects are described herein by way of example, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or package arrangements. For example, some aspects can be implemented via integrated chip embodiments or other devices based on non-modular components (e.g., end-user equipment, vehicles, communication equipment, computing devices, industrial equipment, retail / purchasing devices, medical devices, and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). The aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements, and / or end-user equipment of different sizes, shapes, and configurations. Attached Figure Description

[0019] To gain a more detailed understanding of the features of this disclosure, a more specific description of the above-briefly summarized aspects can be obtained by referring to the accompanying drawings, some of which are illustrated in the figures. However, it should be noted that the drawings illustrate only certain exemplary aspects of the invention and should therefore not be considered as limiting its scope, as the specification may acknowledge other equivalent aspects. The same reference numerals in different figures may identify the same or similar elements.

[0020] Figure 1 This is a diagram illustrating an example of a wireless network according to the present disclosure.

[0021] Figure 2 This is a diagram illustrating an example of a base station communicating with a user equipment (UE) in a wireless network according to this disclosure.

[0022] Figure 3 This is a diagram illustrating an example of sidelink communication according to this disclosure.

[0023] Figure 4 This is a diagram illustrating examples of sidelink communication and access link communication according to this disclosure.

[0024] Figure 5 This is a diagram illustrating an example of discontinuous transmission in the shared channel occupancy time for side link communication in unlicensed spectrum, according to this disclosure.

[0025] Figure 6 This is a diagram illustrating an example process associated with discontinuous transmission during shared channel occupancy time for sidelink communication in unlicensed spectrum, according to this disclosure.

[0026] Figure 7 These are diagrams of an example device for wireless communication according to the present disclosure. Detailed Implementation

[0027] Various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of the disclosure herein, whether implemented independently of any other aspect of this disclosure or in combination with any other aspect of the invention. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such an apparatus or method practiced using structures, functions, or structures and functions other than 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.

[0028] Several aspects of a telecommunications system will now be presented with reference to various devices and technologies. These devices and technologies will be described in detail below and illustrated 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 a combination thereof. Whether such an element is implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0029] Although the terms commonly associated with 5G or New Radio (NR) Radio Access Technology (RAT) may be used to describe the aspects herein, the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or RATs after 5G (e.g., 6G).

[0030] Figure 1This is a schematic diagram illustrating an example of a wireless network 100 according to this disclosure. The wireless network 100 may be or may include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. Base station 110 is the entity that communicates with UE 120. Base station 110 (sometimes referred to as BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a Transmitter Point (TRP). Each base station 110 may provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" can refer to the coverage area of ​​base station 110 and / or the base station subsystem serving that coverage area, depending on the context in which the term is used.

[0031] Base station 110 can provide communication coverage for macro cells, pico cells, femtocells, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UE 120 with a service subscription. A pico cell can cover a relatively small geographic area and can allow unrestricted access by UE 120 with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access by UE 120 associated with the femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). Base station 110 for a macro cell can be referred to as a macro base station. Base station 110 for a pico cell can be referred to as a pico base station. Base station 110 for a femtocell can be referred to as a femtocell or a home base station. Figure 1 In the example shown, BS110a can be a macro base station of macro cell 102a, BS 110b can be a pico base station of pico cell 102b, and BS 110c can be a femto base station of femto cell 102c. A base station can support one or more (e.g., three) cells.

[0032] In some examples, the cell may not necessarily be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile base station 110 (e.g., a mobile base station). In some examples, base station 110 may use any suitable transport network to interconnect with each other and / or interconnect to one or more other base stations 110 or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0033] Wireless network 100 may include one or more relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., base station 110 or UE 120) and send data transmissions to a downstream station (e.g., UE 120 or base station 110). A relay station may be a UE 120 capable of relaying the transmissions of other UEs 120. Figure 1 In the example shown, BS 110d (e.g., a relay base station) can communicate with BS 110a (e.g., a macro base station) and UE 120d to facilitate communication between BS 110a and UE 120d. The base station 110 for relay communication can be referred to as a relay station, relay base station, relay, etc.

[0034] Wireless network 100 can be a heterogeneous network comprising different types of base stations 110 (such as macro base stations, pico base stations, femto base stations, relay base stations, etc.). These different types of base stations 110 can have different transmission power levels, different coverage areas, and / or different effects on interference in wireless network 100. For example, macro base stations can have high transmission power levels (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations can have lower transmission power levels (e.g., 0.1 to 2 watts).

[0035] Network controller 130 may be coupled to or communicate with a set of base stations 110, and may provide coordination and control for these base stations 110. Network controller 130 may communicate with base stations 110 via backhaul communication links. Base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

[0036] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. Some UE 120s can communicate with other UEs on sidelinks by using channel sensing procedures to determine whether resources are available, for example, in unlicensed spectrum. For example, UE 120 can monitor resource reservations to determine whether resources are available for one or more transmissions during Channel Occupied Time (COT). UE 120 may include, for example, access terminals, terminals, mobile stations, and / or subscriber units. UE 120 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, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, and / or any other suitable device configured to communicate via a wireless medium.

[0037] Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags capable of communicating with base stations, another device (e.g., remote devices), or other entities. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered user-end equipment. UE 120 may be included within a housing that houses the components of UE 120, such as processor components and / or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electrically coupled, and / or electrically coupled.

[0038] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT can be referred to as a radio technology, air interface, etc. A frequency can be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0039] In some examples, 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 for communication with each other). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (which may include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0040] Devices in Wireless Network 100 can communicate using the electromagnetic spectrum, which can be subdivided by frequency or wavelength into various categories, bands, channels, etc. For example, devices in Wireless Network 100 can communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been designated as frequency ranges FR1 (410MHz to 7.125GHz) and FR2 (24.25GHz to 52.6GHz). It should be understood that although a portion of FR1 is greater than 6GHz, FR1 is generally referred to (and interchangeably referred to) as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes arise with FR2, which is generally referred to (and interchangeably referred to) as the “millimeter wave” band in documents and articles, although this is different from the Extremely High Frequency (EHF) band (30GHz to 300GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU).

[0041] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have designated the operating bands of these IF bands as the frequency range designation FR3 (7.125 GHz to 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to IF band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0042] Considering the examples above, unless otherwise specifically stated, it should be understood that the terms "sub-6 GHz" and the like (if used herein) can broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include intermediate frequency band frequencies. Additionally, unless otherwise specifically stated, it should be understood that the terms "millimeter wave" and the like (if used herein) can broadly refer to frequencies that may include intermediate frequency band frequencies, may be within FR2, FR4, FR4-a, or FR4-1 and / or FR5, or may be within the EHF band. It is anticipated that the frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0043] In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may transmit a first communication in a first time slot within a Channel Occupancy Time (COT); determine whether one or more transmission criteria are satisfied for the transmission of a second communication in a second time slot within the COT; and selectively transmit the second communication in the second time slot within the COT, at least in part based on the result of determining whether one or more transmission criteria are satisfied. Alternatively or additionally, the communication manager 140 may perform one or more other operations described herein.

[0044] As indicated above, Figure 1 Provided as an example. Other examples may differ from those provided. Figure 1 The content described.

[0045] Figure 2 This is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 according to this disclosure. The base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1).

[0046] At base station 110, transmission processor 220 can receive data for UE 120 (or a set of UE 120) from data source 212. Transmission processor 220 can select one or more modulation and coding schemes (MCS) for UE 120, at least in part, based on one or more Channel Quality Indicators (CQIs) received from UE 120. UE 120 can process (e.g., encode and modulate) its data, at least in part, based on the MCS selected for UE 120, and can provide data symbols for UE 120. Transmission processor 220 can process system information (e.g., for Semi-Static Resource Partition Information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper-layer signaling) and provide overhead symbols and control symbols. Transmission processor 220 can generate reference symbols for reference signals (e.g., Cell-Specific Reference Signal (CRS) or Demodulation Reference Signal (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 ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable) and can provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) shown as modems 232a to 232t. For example, each output symbol stream can be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 can use a corresponding modulator component to process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 can further use a corresponding modulator component to process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream to obtain a downlink signal. Modems 232a to 232t can transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) shown as antennas 234a to 234t.

[0047] At UE 120, an array of antennas 252 (shown as antennas 252a to 252r) can receive downlink signals from base station 110 and / or other base stations 110 and can provide a set of received signals (e.g., R modems) to an array of modems 254 (shown as modems 254a to 254r). For example, each received signal can be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 can use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain an input sample. Each modem 254 can use a demodulator component to further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from modem 254, can perform MIMO detection on the received symbols (if applicable), and can provide the detected symbols. The receiver processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 115 to the data sink 260, and provide decoding control information and system information to the 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 Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, and / or CQI parameters, among other examples. In some examples, one or more components of UE 120 may be included in the housing 284.

[0048] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0049] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include one or more antenna panels, one or more antenna groups, one or more antenna element sets and / or one or more antenna arrays, and other examples, or may be included within one or more antenna panels, one or more antenna groups, one or more antenna element sets and / or one or more antenna arrays, and other examples. Antenna panels, antenna groups, antenna element sets and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), coplanar antenna element sets, non-coplanar antenna element sets, and / or coupled to one or more transmitting and / or receiving components (such as...). Figure 2 One or more antenna elements (one or more components).

[0050] On the uplink, at UE 120, transmission processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). Transmission processor 264 can generate reference symbols for one or more reference signals. Symbols from transmission processor 264 can be pre-encoded (if applicable) by TX MIMO processor 266, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include modulator and demodulator. In some examples, UE 120 includes transceiver. Transceiver may include antenna 252, modem 254, MIMO detector 256, receive processor 258, transmission processor 264, and / or TX MIMO processor 266, any combination of these components. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., references). Figures 5 to 6 ).

[0051] At base station 110, uplink signals from UE 120 and / or other UEs can be received by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232, shown as DEMOD), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive 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 one or more UEs 120 for downlink and / or uplink communication. In some examples, modem 254 of UE 120 may include modulator and demodulator. In some examples, base station 110 includes transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 for performing aspects of any of the methods described herein (e.g., references). Figures 5 to 6 ).

[0052] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2Any other components may employ one or more techniques associated with discontinuous transmissions during the shared channel occupancy time (COT) for sidelink communication in unlicensed spectrum, as described in more 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 guide, for example Figure 6 The operation of process 600 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code of base station 110 and UE 120, respectively. In some examples, 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, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly executed or executed after compilation, transformation, and / or interpretation), may cause one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 6 The operation of process 600 and / or other processes as described herein. In some examples, the execution instructions may include run instructions, translate instructions, compile instructions and / or interpret instructions, and other examples.

[0053] In some aspects, UE 120 includes components for transmitting a first communication in a first time slot within the COT; components for determining whether one or more transmission criteria are met for the transmission of a second communication in a second time slot within the COT; and / or components for selectively transmitting the second communication in a second time slot within the COT, at least in part based on the result of determining whether one or more transmission criteria are met. Components for enabling UE 120 to perform the operations described herein may include, for example, one or more of a communication manager 140, an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, or a memory 282.

[0054] Although Figure 2 The boxes in the diagram represent different components, but the functions described above relative to the boxes can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described relative to the transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by or under the control of the controller / processor 280.

[0055] As indicated above, Figure 2 Provided as an example. Other examples may differ from those provided. Figure 2The content described.

[0056] Figure 3 This is a diagram illustrating example 300 of sidelink communication according to this disclosure.

[0057] like Figure 3 As 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 peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication (which may include vehicle-to-vehicle (V2V) communication, vehicle-to-IoT (V2I) communication, vehicle-to-peer (V2P) communication, mesh networking, etc. UEs 305 (e.g., UE 305-1 and / or UE 305-2) may correspond to one or more other UEs described elsewhere herein, such as UE 120. The 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). Alternatively, UE 305 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, symbols, etc.).

[0058] like Figure 3As 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. PSCCH 315 can be used to transmit control information, similar to a Physical Downlink Control Channel (PDCCH) and / or a Physical Uplink Control Channel (PUCCH) for cellular communication with base station 110 via an access link or access channel. PSSCH 320 can be used to transmit data, similar to a Physical Downlink Shared Channel (PDSCH) and / or a Physical Uplink Shared Channel (PUSCH) for cellular communication with base station 110 via an access link or access channel. 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.) that may be carried on PSSCH 320 for transport block (TB) 335. TB 335 can include data. PSFCH 325 can be used for transmission-side link feedback 340, such as Hybrid Automatic Repeat Request (HARQ) feedback (e.g., ACK / NACK information), Transmission Power Control (TPC), Schedule Request (SR), etc.

[0059] One or more sidelink channels 310 may use a resource pool. For example, a time-specific resource block (RB) may be used to transmit a scheduling allocation in a subchannel (e.g., included in SCI 330). Data transmission associated with a scheduling allocation (e.g., on PSSCH 320) may occupy adjacent RBs in the same subframe as the scheduling allocation (e.g., using frequency division multiplexing). The scheduling allocation and associated data transmission are not transmitted on adjacent RBs.

[0060] UE 305 can operate using resource selection and / or scheduling of transmission modes performed by UE 305 (e.g., not base station 110). UE 305 can perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 305 can measure Received Signal Strength Indicator (RSSI) parameters (e.g., sidelink RSSI (S-RSSI) parameters) associated with various sidelink channels, can measure Reference Signal Received Power (RSRP) parameters (e.g., PSSCH-RSRP parameters) associated with various sidelink channels, can measure Reference Signal Received Quality (RSRQ) parameters (e.g., PSSCH-RSRQ parameters) associated with various sidelink channels, etc., and can select the channel for transmission for sidelink communication based at least in part on these measurements. As described in more detail herein, UE 305 can perform resource selection to select discontinuous resource sets (e.g., for discontinuous transmission sets).

[0061] UE 305 can use the SCI 330 received in PSCCH 315 for resource selection and / or scheduling, which can indicate the resources used, channel parameters, etc. Alternatively, UE 305 can perform resource selection and / or scheduling by determining the Channel Busy Rate (CBR) associated with various sidelink channels, which can 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).

[0062] In transport modes where resource selection and / or scheduling are performed by UE 305, UE 305 can generate sidelink grants and can transmit grants in SCI 330. Sidelink grants can indicate one or more parameters (e.g., transport parameters) to be used for upcoming sidelink transports, such as one or more resource blocks (e.g., for TB 335) to be used for upcoming sidelink transports on PSSCH 320, one or more subframes to be used for upcoming sidelink transports, modulation and coding schemes (MCS) to be used for upcoming sidelink transports, etc. UE 305 can generate sidelink grants indicating one or more parameters (such as the periodicity of sidelink transports) for semi-persistent scheduling (SPS). Additionally or alternatively, UE 305 can generate sidelink grants for event-driven scheduling (such as for on-demand sidelink messages).

[0063] As indicated above, Figure 3 Provided as an example. Other examples may differ from those provided. Figure 3 The content described.

[0064] Figure 4This is a diagram illustrating example 400 of sidelink communication and access link communication according to this disclosure.

[0065] like Figure 4 As shown, the transmitter (Tx) UE 405 and the receiver (Rx) UE 410 can communicate with each other via a side link, as described above. Figure 3 As described herein. As further shown, in some sidelink modes, base station 110 may communicate with Tx UE 405 via a first access link. In some sidelink modes, base station 110 may communicate with Rx UE 410 via a second access link. Tx UE 405 and / or Rx 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).

[0066] As indicated above, Figure 4 Provided as an example. Other examples may differ from those provided. Figure 4 The content described.

[0067] As described above, the UE can perform a channel sensing process to determine whether a channel is available for communication. For example, the UE can identify available resources (e.g., candidate resources) for lateral link transmissions and can select one or more resources from the available resources. The UE can reserve one or more resources for lateral link transmissions and / or one or more subsequent transmissions. For example, the UE can reserve a first resource for packet transmissions and a second resource for packet retransmissions (e.g., to improve reliability).

[0068] To determine whether a resource is available, the UE can monitor and decode transmissions on the channel and perform channel measurements. For example, the UE can perform sidelink control information (SCI) decoding to determine whether resources in future time slots have been reserved (e.g., the SCI may indicate the reservation of one or more resources in future time slots). The UE can also combine SCI decoding with reference signal received power (RSRP) measurement to determine whether the measured RSRP based on the decoded SCI is below a threshold. If the resource has not been reserved (e.g., there is no decoded SCI indicating resource reservation) or if the resource has been reserved by another UE, but the measured RSRP from that other UE is below the RSRP threshold, then the resource can be classified as available. In this case, when packets arrive for transmission (or when resource selection has been triggered), the UE can determine the sensing window (in the past), at least in part based on the decoding and measurement of the sensing window to determine the use of the sensing window and the resource reservation indicated by the SCI decoded in the sensing window, and at least in part based on the use of the sensing window and the resource reservation indicated by the SCI in the sensing window to identify subsequent available resources (in the future) in the resource selection window. In other words, the UE can use decoding and RSRP measurement to determine whether a resource is reserved in the resource selection window by interpreting the resource reservation information carried by the decoded SCI and projecting the measured RSRP from the sensing window onto the reserved resources in the resource selection window. The UE can then select resources from those already marked as available in the resource selection window.

[0069] When multiple UEs share a set of resources in unlicensed spectrum used for sidelink communication, the resource set can be defined by channel occupancy associated with Channel Occupancy Time (COT). In this case, a first UE can use a channel sensing procedure to select resources and reserve resources for channel occupancy. The first UE can remain in channel occupancy for the period defined by the COT. During channel occupancy, the first UE can dedicate specific resources or selectively share those specific resources with other UEs. The COT can span multiple time slots (e.g., 20 time slots) and can include multiple resource blocks (RBs) across multiple frequencies. The COT can be initiated by a UE (as described above), a BS, or another type of wireless communication device using a channel sensing procedure such as a Listen-Before-Speak (LBT) procedure (e.g., at least in part based on a Type 1 channel access procedure).

[0070] When a UE initiates channel occupancy, it can transmit during a specific subset of the COT's time slots. For example, a UE can use a first time slot in the COT to transmit a packet and can use a second time slot in the COT to retransmit that packet. Alternatively, the UE can use multiple different time slots in the COT to transmit multiple different packets. However, in some cases, a UE may have multiple packets, transport blocks, etc., for transmission, but may not be configured to use a contiguous set of resources to transmit multiple packets, transport blocks, etc. For example, a UE may have packets for transmission in a first time slot and may be configured to retransmit those packets in a second time slot that is not contiguous with the first time slot. Alternatively, the first and second time slots may be contiguous but may be separated by a threshold time interval. In these cases, the configuration of channel occupancy and the associated COT can prevent the UE from transmitting, for example, without reacquiring channel occupancy for a second transmission.

[0071] Some aspects described herein enable discontinuous transmission for sidelink communication in unlicensed spectrum. For example, after transmission in a first time slot, the UE can transmit in a second time slot that is discontinuous with the first time slot, at least in part, based on determining whether one or more transmission criteria are met. In this case, one or more transmission criteria may include whether the UE has already performed channel sensing techniques in the second time slot, the transmission priority of the transmission in the second time slot, whether the transmission in the second time slot is a retransmission, or the congestion level measured in the sidelink channel, etc. In this way, even if the resources are discontinuous with those in the first time slot, the UE can determine that the resources are available for transmission in the second time slot within the channel occupancy. Furthermore, by transmitting in the second time slot at least in part based on determining that one or more transmission criteria are met, the UE avoids interference with other UEs or other devices (e.g., devices operating using Wi-Fi), thereby avoiding dropped communication.

[0072] Figure 5 This is a diagram illustrating example 500 associated with discontinuous transmission during shared channel occupancy time for sidelink communication in unlicensed spectrum, according to this disclosure. Figure 5 As shown, Example 500 includes a first UE 120-1 and a second UE 120-2.

[0073] As in Figure 5As further illustrated by reference numeral 510, the first UE 120-1 can identify a first resource available in a first time slot of the COT and a second resource available in a second time slot of the COT. For example, the first UE 120-1 can perform a channel sensing process to identify the first resource available for transmission and can transmit an indication of the reservation of the second resource available for transmission. Alternatively, the first and second time slots can be non-reserved available resources of the COT. In some aspects, the second transmission can be a retransmission of the first transmission. For example, the first UE 120-1 can identify a first resource for transmitting packets and a second resource for retransmitting packets (e.g., to improve reliability or to perform HARQ-based retransmission). Alternatively, the first UE 120-1 can identify a first resource for transmitting the first packet and a second resource for transmitting the second packet. As shown by reference numeral 530, the first UE 120-1 can use the resources in the first time slot for transmission. For example, the first UE 120-1 can transmit packets to the second UE 120-2 in the first time slot.

[0074] In some aspects, the COT can be a shared COT. For example, a first UE 120-1 can identify or initiate a shared COT (for a specific duration, e.g., 10 milliseconds (ms)), in which one or more other UEs 120 can also transmit. In some aspects, the first resource and the second resource can be discontinuous. For example, as shown by reference numeral 520-1, the first resource can be in a first time slot n, while the second resource can be in a second time slot n+k (k>1), which is discontinuous with the first time slot (e.g., the first transmission is in time slot n, while the second transmission is in time slot n+5). Alternatively, as shown by reference numeral 520-2, the first resource can be in consecutive time slots, but the transmissions in the two time slots can be separated by a threshold time amount. For example, the first transmission can be in the first resource in time slot n+1, while the second transmission can be in the second resource in time slot n+2, but the time interval (e.g., gap) between the first resource and the second resource can be greater than a threshold (e.g., greater than, for example, 16 μs).

[0075] As in Figure 5As further illustrated by reference numerals 540 and 550, the first UE 120-1 can determine whether one or more transmission criteria are met for a second time slot and can selectively transmit using resources in the second time slot. For example, the first UE 120-1 can perform a channel sensing procedure, determine that the channel sensing procedure is successful, and transmit to the second UE 120-2 in reserved resources in the second time slot. In other words, the first UE 120-1 performs channel sensing for a specific amount of time before transmitting in the second time slot, such as a type 2A or 2B channel access procedure, and / or the first UE 120-1 can transmit in the second time slot in resources already reserved by the first UE 120-1 (e.g., if the energy measured during channel sensing is below a threshold). In some cases, the first UE 120-1 can perform a channel sensing procedure, determine that the channel sensing procedure is successful, and transmit to the second UE 120-2 in the second time slot based on the channel sensing result (e.g., resources in the second time slot are identified as available by channel sensing, and the first UE can transmit in the resources). In this context, the channel sensing process may include, for example, a Listen-Before-Speak (LBT) process (e.g., a Type 2 channel access process, a Category 2 LBT process, an LBT process without random backoff, etc.).

[0076] In some aspects, the first UE 120-1 may perform a channel sensing procedure at a specific time. For example, to enable the transmission of a new packet or the retransmission of a packet in a second time slot, the first UE 120-1 may perform channel sensing before the reservation of resources in the second time slot begins. In this case, when channel sensing indicates that its channel or subchannel is free, the first UE 120-1 may transmit in that channel or subchannel. In some aspects, as described above, performing the channel sensing procedure may include: performing energy measurement within a sensing window of a pre-configured duration. For example, a gap may exist before transmission in the second time slot (e.g., the gap may be at the beginning of the second time slot or at the end of a previous time slot), and the UE 120 sharing the channel occupancy may avoid transmission during the gap, so the first UE may perform channel sensing during the gap (e.g., type 2A / 2B channel access as specified in 3GPP). In this case, the UE 120 may transmit in a second time slot where the measured energy determined during channel sensing is below an energy threshold.

[0077] Alternatively, the first UE 120-1 may determine whether the priority of a transmission in the second time slot meets a threshold. For example, when the second transmission in the second time slot has the same priority as or a higher priority than the first transmission in the first time slot, the first UE 120-1 may transmit in the second time slot of the COT. Alternatively, when the second transmission is a retransmission of the first transmission, the first UE 120-1 may transmit in the second time slot of the COT.

[0078] Alternatively, when the first UE 120-1 determines that the measured congestion level of the channel currently experiencing channel occupancy is less than a threshold (e.g., the Channel Busy Ratio (CBR) is less than a threshold), the first UE 120-1 may transmit in the second time slot of the COT. For example, when the first UE 120-1 detects a congestion level greater than the threshold, the first UE 120-1 may determine that the congestion level in the channel is high and may abandon transmission. In contrast, when the first UE 120-1 detects a congestion level less than or equal to the threshold, the first UE 120-1 may determine that the congestion level is low, and the first UE 120-1 may transmit in the second time slot. In some aspects, the first UE 120-1 may perform CBR measurements, Received Signal Strength Indicator (RSSI) determination, etc., over a specific duration to determine the congestion level.

[0079] As indicated above, Figure 5 Provided as an example. Other examples may differ from those provided. Figure 5 The content described.

[0080] Figure 6 This is a diagram illustrating, for example, an example process 600 performed by a UE according to this disclosure. Example process 600 is an example of an operation performed by a UE (e.g., UE 120, etc.) associated with discontinuous transmission during shared channel occupancy time for sidelink communication in unlicensed spectrum.

[0081] like Figure 6 As shown, in some aspects, process 600 may include transmitting first communication in a first time slot within the COT (block 610). For example, as described above, the UE (e.g., using a receive processor 258, a transmit processor 264, a controller / processor 280, a memory 282, etc.) may transmit the first communication in a first time slot within the COT.

[0082] like Figure 6As further shown, in some aspects, process 600 may include determining whether a transmission of a second communication in a second time slot within the COT meets one or more transmission criteria (block 620). For example, as described above, the UE (e.g., using a receive processor 258, a transmit processor 264, a controller / processor 280, a memory 282, etc.) may determine whether a transmission of a second communication in a second time slot within the COT meets one or more transmission criteria.

[0083] like Figure 6 As further shown, in some aspects, process 600 may include selectively transmitting second communication in a second time slot within the COT based at least in part on the result of determining whether one or more transmission criteria are met (block 630). For example, as described above, the UE (e.g., using a receive processor 258, a transmit processor 264, a controller / processor 280, a memory 282, etc.) may selectively transmit second communication in a second time slot within the COT based at least in part on the result of determining whether one or more transmission criteria are met.

[0084] Process 600 may include additional aspects, such as those described below and / or any single aspect or any combination of aspects described in conjunction with one or more other process descriptions elsewhere in this document.

[0085] In the first aspect, determining whether one or more transmission criteria are met includes: determining whether a sense-based channel access procedure is completed within a second time slot.

[0086] In the second aspect, determining whether one or more transmission criteria are met, either alone or in combination with the first aspect, includes determining whether to transmit the second communication in the second time slot based at least in part on the results of a sensing-based channel access procedure.

[0087] In the third aspect, determining whether one or more transmission criteria are met, either alone or in combination with one or more of the first and second aspects, includes determining whether the second communication is associated with a second priority that is greater than or equal to the first priority of the first communication.

[0088] In the fourth aspect, determining whether one or more transmission criteria are met, either alone or in combination with one or more of the first to third aspects, includes determining whether the second communication is a retransmission of the first communication.

[0089] In the fifth aspect, determining whether one or more transmission criteria are met, either alone or in combination with one or more of the first to fourth aspects, includes determining whether a congestion level threshold is met.

[0090] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the congestion level threshold is the channel busy ratio threshold.

[0091] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the transmission of the first communication is separated from the transmission of the second communication by at least a threshold duration.

[0092] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the first time slot is separated from the second time slot by at least one time slot.

[0093] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the first time slot and the second time slot are consecutive time slots separated by at least a threshold duration.

[0094] In the tenth aspect, determining whether one or more transmission criteria are met, either alone or in combination with one or more of the first to ninth aspects, includes determining whether resources in the second time slot are reserved for the transmission of the second communication.

[0095] In the eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, process 600 includes: determining a first resource in a first time slot for transmitting the first communication during the COT acquisition process; and indicating the reservation of a second resource in a second time slot for transmitting the second communication during the COT acquisition process.

[0096] In the twelfth aspect, selectively transmitting the second communication, either alone or in combination with one or more of the first to eleventh aspects, includes selectively transmitting the second communication based at least in part on the results of a channel sensing process.

[0097] although Figure 6 An example box for process 600 is shown, but in some respects, it differs from... Figure 6 Compared to the boxes depicted, process 600 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more of the boxes in process 600 may be performed in parallel.

[0098] Figure 7This is a diagram of an example device 700 for wireless communication. Device 700 may be a UE, or a UE may include device 700. In some aspects, device 700 includes a receiving component 702 and a transmitting component 704 that can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 700 can use the receiving component 702 and the transmitting component 704 to communicate with another device 706 (such as a UE, a base station, or another wireless communication device). As further shown, device 700 may include a communication manager 140. Communication manager 140 may include a determining component 708, an indicating component 710, or a channel sensing component 712, and one or more of the others in other examples.

[0099] In some respects, device 700 can be configured to perform the combination described herein. Figure 5 One or more operations described herein. Alternatively or concurrently, device 700 may be configured to perform one or more processes described herein, such as process 600. In some aspects, Figure 7 The device 700 and / or one or more components shown may include a combination Figure 2 One or more components of the UE as described. Alternatively or alternatively, Figure 7 One or more components shown can be combined Figure 2 The description is implemented 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.

[0100] Receiver 702 may receive communications from device 706, such as reference signals, control information, data communications, or combinations thereof. Receiver 702 may provide the received communications to one or more other components of device 700. In some aspects, receiver 702 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signals to one or more other components of device 706. In some aspects, receiver 702 may include combinations of... Figure 2 The described UE includes one or more antennas, modems, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0101] Transmission component 704 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 706. In some aspects, one or more other components of device 706 can generate communications and provide the generated communications to transmission component 704 for transmission to device 706. In some aspects, transmission component 704 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples), and can transmit the processed signals to device 706. In some aspects, transmission component 704 may include combinations of... Figure 2 The described UE includes one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 704 may be co-located with the receive component 702 in a transceiver.

[0102] Transmission component 704 can transmit the first communication in a first time slot within the Channel Occupied Time (COT). Determination component 708 can determine whether one or more transmission criteria are met for the transmission of the second communication in a second time slot within the COT. Transmission component 704 can selectively transmit the second communication in the second time slot within the COT, at least in part, based on the result of determining whether one or more transmission criteria are met.

[0103] The determining component 708 can determine a first resource in a first timeslot used for transmitting the first communication. The indicating component 710 can indicate the reservation of a second resource in a second timeslot used for transmitting the second communication during the COT acquisition process. The channel sensing component 712 can perform a channel sensing process.

[0104] Figure 7 The number and arrangement of components shown are provided as an example. In fact, with... Figure 7 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 7 The two or more components shown can be implemented within a single component, or Figure 7 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 7 The component collection (one or more components) shown can be described as being composed of Figure 7 The other set of components shown performs one or more functions.

[0105] The following provides an overview of some aspects of this disclosure:

[0106] Aspect 1: A wireless communication method performed by a user equipment (UE), the wireless communication method comprising: transmitting a first communication in a first time slot within a channel occupancy time (COT); determining whether one or more transmission criteria are satisfied for the transmission of a second communication in a second time slot within the COT; and selectively transmitting the second communication in the second time slot within the COT based at least in part on the result of determining whether one or more transmission criteria are satisfied.

[0107] Aspect 2: According to the method of aspect 1, determining whether one or more transmission criteria are met includes: determining whether a sense-based channel access procedure is completed within a second time slot.

[0108] Aspect 3: According to the method of aspect 2, determining whether one or more transmission criteria are met includes: determining whether to transmit the second communication in the second time slot based at least in part on the results of a sensing-based channel access procedure.

[0109] Aspect 4: The method according to any one of Aspects 1 to 3, wherein determining whether one or more transmission criteria are met includes: determining whether the second communication is associated with a second priority that is greater than or equal to a first priority of the first communication.

[0110] Aspect 5: The method according to any one of Aspects 1 to 4, wherein determining whether one or more transmission criteria are met includes: determining whether the second communication is a retransmission of the first communication.

[0111] Aspect 6: The method according to any one of Aspects 1 to 5, wherein determining whether one or more transmission criteria are met includes: determining whether a congestion level threshold is met.

[0112] Aspect 7: According to the method of aspect 6, the congestion level threshold is the channel busy ratio threshold.

[0113] Aspect 8: The method according to any one of Aspects 1 to 7, wherein the transmission of the first communication is separated from the transmission of the second communication by at least a threshold duration.

[0114] Aspect 9: According to the method of aspect 8, the first time slot is separated from the second time slot by at least one time slot.

[0115] Aspect 10: According to the method of aspect 8, the first time slot and the second time slot are consecutive time slots separated by at least a threshold duration.

[0116] Aspect 11: The method according to any one of Aspects 1 to 10, wherein determining whether one or more transmission criteria are met includes: determining whether resources in the second time slot are reserved for transmission of the second communication.

[0117] Aspect 12: The method according to any one of Aspects 1 to 11, the method further comprising: determining a first resource in a first time slot for transmitting the first communication; and indicating the reservation of a second resource in a second time slot for transmitting the second communication during the COT acquisition process.

[0118] Aspect 13: The method according to any one of Aspects 1 to 12, further comprising: performing a channel sensing process; and wherein selectively transmitting the second communication comprises: selectively transmitting the second communication based at least in part on the result of the channel sensing process. The selective transmission of the second communication comprises: selectively transmitting the second communication based at least in part on the result of the channel sensing process.

[0119] Aspect 14: An apparatus for wireless communication at a device, the apparatus 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 one or more of the methods according to aspects 1 to 13.

[0120] Aspect 15: An apparatus for wireless communication, the apparatus including a memory and one or more processors coupled to the memory, the one or more processors being configured to perform a method according to one or more of aspects 1 to 13.

[0121] Aspect 16: An apparatus for wireless communication, the apparatus comprising at least one component for performing a method according to one or more of aspects 1 to 13.

[0122] Aspect 17: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods according to one or more of aspects 1 to 13.

[0123] Aspect 18: 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 one or more of the methods according to aspects 1 to 13.

[0124] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made in light of the foregoing disclosure, or may be derived from practice in the various aspects.

[0125] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. "Software" should be interpreted broadly as 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, procedures and / or functions, and other examples, whether or not referred to as software, firmware, middleware, microcode, hardware description languages, or others. As used herein, a "processor" is 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 specific software code, as those skilled in the art will understand that software and hardware can be designed to implement systems and / or methods, at least in part, based on the descriptions herein.

[0126] As used in this article, depending on the context, "meeting 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.

[0127] Even if a specific combination of features is recited in the claims or disclosed in the specification, such combinations are not intended to limit the disclosure of the aspects. Most of these features can be combined in ways not specifically recited in the claims and / or not disclosed in the specification. The disclosure of an aspect includes each dependent claim in combination with all other claims in the claim set. As used herein, the phrase referring to “at least one of” the list of items means any combination of these items, including individual members. As an example, “at least one of a, b, or c” is intended to cover any combination of a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination having multiples of the same elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c or any other order of a, b, and c).

[0128] The elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “one” are intended to include one or more items and may be used interchangeably with “one or more.” Additionally, as used herein, the article “the” is intended to include one or more items referenced in combination 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 and may be used interchangeably with “one or more.” Where only one item is anticipated, the phrase “only one” or similar language is used. Furthermore, as used herein, the terms “has / have / having,” etc., are intended as open-ended terms that do not limit the elements they modify (e.g., an element “having” A may also have B). Additionally, unless explicitly stated otherwise, the phrase “based on” is intended to mean “at least partially based on.” Furthermore, as used herein, unless otherwise expressly stated (e.g., in combination with “either of” or “only one of”), the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and / or”.

Claims

1. A user equipment (UE) for wireless communication, the user equipment comprising: At least one memory, including instructions; and At least one processor is configured to execute the instructions to cause the UE to: The first communication is transmitted in a first time slot within the Channel Occupied Time (COT), wherein multiple UEs share the COT; For the transmission of second communication in the second time slot within the COT, it is determined whether one or more transmission criteria are met, wherein the one or more transmission criteria include whether the UE has performed channel sensing technology in the second time slot, the transmission priority of the transmission in the second time slot, whether the transmission in the second time slot is a retransmission, and / or the congestion level measured in the side link channel; and The second communication is selectively transmitted in the second time slot within the COT, at least in part based on the result of determining whether one or more transmission criteria are met, and wherein the transmission of the first communication is separated from the transmission of the second communication by at least a threshold duration.

2. The UE of claim 1, wherein, in order to determine whether the one or more transmission criteria are met, the at least one processor is configured to cause the UE to: Determine whether the sensing-based channel access process is completed within the second time slot.

3. The UE of claim 2, wherein, in order to determine whether the one or more transmission criteria are met, the at least one processor is configured to cause the UE to: Whether to transmit the second communication in the second time slot is determined at least in part based on the results of the sensing-based channel access process.

4. The UE of claim 1, wherein, in order to determine whether the one or more transmission criteria are met, the at least one processor is configured to cause the UE to: Determine whether the second communication is associated with a second priority that is greater than or equal to the first priority of the first communication.

5. The UE of claim 1, wherein, in order to determine whether the one or more transmission criteria are met, the at least one processor is configured to cause the UE to: Determine whether the second communication is a retransmission of the first communication.

6. The UE of claim 1, wherein, in order to determine whether the one or more transmission criteria are met, the at least one processor is configured to cause the UE to: Determine whether the congestion level threshold is met.

7. The UE according to claim 6, wherein the congestion level threshold is a channel busy ratio threshold.

8. The UE according to claim 1, wherein the first time slot is separated from the second time slot by at least one time slot.

9. The UE of claim 1, wherein the first time slot and the second time slot are consecutive time slots separated by at least the threshold duration.

10. The UE of claim 1, wherein, in order to determine whether the one or more transmission criteria are met, the at least one processor is configured to cause the UE to: Determine whether the resources in the second time slot are reserved for the transmission of the second communication.

11. The UE of claim 1, wherein the at least one processor is further configured to cause the UE to: During the COT acquisition process, a first resource in the first time slot used for transmitting the first communication is determined; and During the COT acquisition process, the reservation of a second resource in the second time slot for transmitting the second communication is indicated.

12. The UE of claim 1, wherein the at least one processor is further configured to cause the UE to: Perform channel sensing process; and In order to selectively transmit the second communication, the at least one processor is configured to cause the UE to: The second communication is selectively transmitted, at least in part, based on the results of the channel sensing process.

13. A wireless communication method performed by a user equipment (UE), the wireless communication method comprising: The first communication is transmitted in a first time slot within the Channel Occupied Time (COT), wherein multiple UEs share the COT; For the transmission of second communication in the second time slot within the COT, it is determined whether one or more transmission criteria are met, wherein the one or more transmission criteria include whether the UE has performed channel sensing technology in the second time slot, the transmission priority of the transmission in the second time slot, whether the transmission in the second time slot is a retransmission, and / or the congestion level measured in the side link channel; and The second communication is selectively transmitted in the second time slot within the COT, at least in part based on the result of determining whether one or more transmission criteria are met, and wherein the transmission of the first communication is separated from the transmission of the second communication by at least a threshold duration.

14. The method of claim 13, wherein determining whether the one or more transmission criteria are satisfied comprises: Determine whether the sensing-based channel access process is completed within the second time slot.

15. The method of claim 14, wherein determining whether the one or more transmission criteria are satisfied comprises: Whether to transmit the second communication in the second time slot is determined at least in part based on the results of the sensing-based channel access process.

16. The method of claim 13, wherein determining whether the one or more transmission criteria are satisfied comprises: Determine whether the second communication is associated with a second priority that is greater than or equal to the first priority of the first communication.

17. The method of claim 13, wherein determining whether the one or more transmission criteria are satisfied comprises: Determine whether the second communication is a retransmission of the first communication.

18. The method of claim 13, wherein determining whether the one or more transmission criteria are satisfied comprises: Determine whether the congestion level threshold is met.

19. The method of claim 18, wherein the congestion level threshold is a channel busy ratio threshold.

20. The method of claim 13, wherein the first time slot is separated from the second time slot by at least one time slot.

21. The method of claim 13, wherein the first time slot and the second time slot are consecutive time slots separated by at least the threshold duration.

22. The method of claim 13, wherein determining whether the one or more transmission criteria are satisfied comprises: Determine whether the resources in the second time slot are reserved for the transmission of the second communication.

23. The method of claim 13, further comprising: During the COT acquisition process, a first resource in the first time slot used for transmitting the first communication is determined; as well as During the COT acquisition process, the reservation of a second resource in the second time slot for transmitting the second communication is indicated.

24. The method of claim 13, further comprising: Perform the channel sensing process; as well as The selective transmission of the second communication includes: The second communication is selectively transmitted, at least in part, based on the results of the channel sensing process.

25. 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 user equipment (UE), cause the UE to perform the following operations: The first communication is transmitted in a first time slot within the Channel Occupied Time (COT), wherein multiple UEs share the COT; For the transmission of second communication in the second time slot within the COT, it is determined whether one or more transmission criteria are met, wherein the one or more transmission criteria include whether the UE has performed channel sensing technology in the second time slot, the transmission priority of the transmission in the second time slot, whether the transmission in the second time slot is a retransmission, and / or the congestion level measured in the side link channel; and The second communication is selectively transmitted in the second time slot within the COT, at least in part based on the result of determining whether one or more transmission criteria are met, and wherein the transmission of the first communication is separated from the transmission of the second communication by at least a threshold duration.

26. The non-transitory computer-readable medium of claim 25, wherein the one or more instructions that cause the UE to determine whether the one or more transmission criteria are satisfied cause the UE to perform the following operations: Determine whether the sensing-based channel access process is completed within the second time slot.

27. An apparatus for wireless communication, the apparatus comprising: Components for transmitting first communication in a first time slot within a channel occupancy time (COT), wherein multiple UEs share the COT; A component for determining whether a transmission of a second communication in a second time slot within the COT meets one or more transmission criteria, wherein the one or more transmission criteria include whether the UE has performed channel sensing technology in the second time slot, the transmission priority of the transmission in the second time slot, whether the transmission in the second time slot is a retransmission, and / or the congestion level measured in the side link channel. as well as A component for selectively transmitting the second communication in a second time slot within the COT based at least in part on the result of determining whether one or more transmission criteria are met, wherein the transmission of the first communication is separated from the transmission of the second communication by at least a threshold duration.

28. The apparatus of claim 27, wherein the component for determining whether the one or more transmission criteria are satisfied comprises: A component used to determine whether a sensing-based channel access process is completed within the second time slot.

29. A computer program product comprising computer-readable instructions, which, when executed by a processor, cause the processor to perform the method according to any one of claims 13-24.

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