Configured authorized channel occupancy time sharing process

Abstract

A configuration grant (CG) channel occupancy time (COT) sharing process is disclosed. A user equipment (UE) sharing a COT may indicate in an uplink control indicator (UCI) the remaining COT duration, an offset indication identifying where the uplink transmission is expected to end, and a channel access priority class (CAPC), which a base station may use to determine which type of data may be included in a downlink transmission in the shared COT. In the event that an energy detection (ED) threshold has not been configured for COT sharing, the UE may reduce the information included in the UCI. The base station may alternatively configure which information for the UE is included in the UCI for potential COT sharing. The COT sharing information may also be compressed by encoding such information into a table or utilizing knowledge of transmission characteristics (e.g., configured endpoints).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Indian Patent Application No. 201941045481, filed on November 8, 2019, entitled “CONFIGURED GRANT CHANNEL OCCUPANCY TIME SHARING PROCEDURE”; and PCT Application No. PCT / US2020 / 059220, filed on November 5, 2020, entitled “CONFIGURED GRANT CHANNEL OCCUPANCY TIME SHARING PROCEDURE”; the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communication systems and, more particularly, to a configured request channel occupancy time (COT) sharing process. Background Art

[0004] Wireless communication networks are widely deployed to provide various communication services, such as voice, video, packet data, messaging, broadcasting, etc. These wireless networks can be multiple access networks that can support multiple users by sharing available network resources. Such networks, which are usually multiple access networks, support the communication of multiple users by sharing available network resources. An example of such a network is the Universal Terrestrial Radio Access Network (UTRAN). UTRAN is a radio access network (RAN) defined as a part of the Universal Mobile Telecommunications System (UMTS), which is a third generation (3G) mobile phone technology supported by the 3rd Generation Partnership Project (3GPP). Examples of multiple access network formats include code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, and single carrier FDMA (SC-FDMA) networks.

[0005] A wireless communication network may include multiple base stations or Node Bs, which may support communication for multiple user equipments (UEs). A UE may communicate with a base station via a downlink and an uplink. A downlink (or forward link) refers to the communication link from a base station to a UE, while an uplink (or reverse link) refers to the communication link from a UE to a base station.

[0006] The base station may send data and control information to the UE on the downlink, and / or may receive data and control information from the UE on the uplink. On the downlink, transmissions from the base station may encounter interference due to transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters. On the uplink, transmissions from the UE may encounter interference from uplink transmissions of other UEs communicating with neighboring base stations or from other wireless RF transmitters. Such interference may degrade performance on the downlink and uplink.

[0007] As the demand for mobile broadband access continues to increase, the potential for interference and congested networks grows as more UEs access long-range wireless communication networks and more short-range wireless systems are deployed in communities. Research and development continues to advance wireless technologies to not only meet the growing demand for mobile broadband access, but also to improve and enhance the user experience with mobile communications. Summary of the invention

[0008] In one aspect of the present disclosure, a method of wireless communication includes: obtaining a channel occupation time (COT) by a UE in response to detecting a successful listen-before-talk (LBT) procedure of a user equipment (UE) on a shared communication channel; determining by the UE whether COT sharing is enabled or not enabled; identifying by the UE COT sharing information for transmission to a serving base station within an uplink control message, wherein the COT sharing information is identified in response to the determination; and sending by the UE an uplink control message having the COT sharing information to the serving base station.

[0009] In an additional aspect of the present disclosure, an apparatus configured for wireless communication includes: a unit for acquiring a COT by a UE in response to detecting that an LBT process of the UE is successful on a shared communication channel; a unit for determining by the UE whether COT sharing is enabled or not enabled; a unit for identifying by the UE COT sharing information for transmission to a serving base station within an uplink control message, wherein the COT sharing information is identified in response to the unit for determining; and a unit for sending by the UE an uplink control message having the COT sharing information to the serving base station.

[0010] In an additional aspect of the present disclosure, a non-transitory computer-readable medium has program code recorded thereon. The program code also includes code for acquiring a COT by a UE in response to detecting that an LBT process of the UE is successful on a shared communication channel; code for determining by the UE whether COT sharing is enabled or not enabled; code for identifying by the UE COT sharing information for transmission to a serving base station within an uplink control message, wherein the COT sharing information is identified in response to execution of the code for determining; and code for sending by the UE an uplink control message having the COT sharing information to the serving base station.

[0011] In an additional aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor is configured to: acquire a COT by a UE in response to detecting that an LBT process of the UE is successful on a shared communication channel; determine by the UE whether COT sharing is enabled or not enabled; identify by the UE COT sharing information for sending to a serving base station in an uplink control message, wherein the COT sharing information is identified in response to execution of a configuration of the processor for determining; and send by the UE an uplink control message with the COT sharing information to the serving base station.

[0012] The features and technical advantages of the examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Other features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for the same purpose of performing the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and methods of operation, and related advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the drawings is provided for the purpose of illustration and description and not as a definition of limitations of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] A further understanding of the nature and advantages of the present disclosure may be achieved by reference to the following drawings. In the drawings, similar components or features may have the same reference numerals. In addition, multiple components of the same type may be distinguished by a dash after the reference numeral and a second reference numeral that distinguishes the similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, regardless of the second reference numeral.

[0014] Figure 1 is a block diagram showing details of a wireless communication system.

[0015] Figure 2is a block diagram showing a design of a base station and a UE configured according to one aspect of the present disclosure.

[0016] Figure 3 is a block diagram illustrating example blocks executed to implement one aspect of the present disclosure.

[0017] Figure 4 is a block diagram illustrating a communication session between a UE and a base station having channel occupancy time (COT) sharing capability configured according to one aspect of the present disclosure.

[0018] Figure 5 is a block diagram illustrating a portion of an NR-U network including a UE and a base station with COT sharing capability configured according to one aspect of the present disclosure.

[0019] Figures 6A-6C is a block diagram illustrating a UE and a base station with COT sharing capability configured according to one aspect of the present disclosure.

[0020] Figure 7 is a block diagram illustrating an example UE configured in accordance with aspects of the present disclosure. DETAILED DESCRIPTION

[0021] The specific embodiments described below in conjunction with the accompanying drawings are intended as descriptions of various configurations and are not intended to limit the scope of the present disclosure. On the contrary, the specific embodiments include specific details for the purpose of providing a thorough understanding of the subject matter of the present invention. It is obvious to those skilled in the art that these specific details are not required in every case, and in some cases, for the sake of clarity, well-known structures and components are shown in block diagram form.

[0022] The present disclosure generally relates to providing or participating in authorized shared access between two or more wireless communication systems (also referred to as wireless communication networks). In various embodiments, the techniques and apparatus can be used in wireless communication networks, such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, 5th generation (5G) or new radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" can be used interchangeably.

[0023] OFDMA network can realize radio technology such as Evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE802.20, fast OFDM, etc. UTRA, E-UTRA and Global System for Mobile Communications (GSM) are part of Universal Mobile Telecommunication System (UMTS). In particular, Long Term Evolution (LTE) is a version of UMTS using E-UTRA. UTRA, E-UTRA, GSM, UMTS and LTE are described in documents provided by an organization named "3rd Generation Partnership Project" (3GPP), and cdma2000 is described in documents of an organization named "3rd Generation Partnership Project 2" (3GPP2). These various radio technologies and standards are known or under development. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration between telecommunication association groups, the purpose of which is to define a globally applicable third generation (3G) mobile phone specification. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving the Universal Mobile Telecommunication System (UMTS) mobile phone standard. 3GPP may define specifications for next generation mobile networks, mobile systems, and mobile devices. The present disclosure relates to the evolution from LTE, 4G, 5G, NR, and beyond wireless technologies with shared access to wireless spectrum between networks using a set of new and different radio access technologies or wireless air interfaces.

[0024] In particular, 5G networks are expected to be able to implement a variety of deployments, a variety of spectrums, and a variety of services and devices using a unified air interface based on OFDM. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also being considered. 5G NR will be able to scale to (1) ultra-high density (e.g., ~1M nodes / km) 2 (1) providing coverage for the massive Internet of Things (IoT) with ultra-low complexity (e.g., ~10s bits / second), ultra-low energy (e.g., ~10+ years battery life), and deep coverage with the ability to reach challenging locations; (2) including mission-critical controls with strong security to protect sensitive personal, financial, or confidential information, ultra-high reliability (e.g., ~99.9999% reliability), ultra-low latency (e.g., ~1ms), and users with a wide range of mobility or lack of mobility; and (3) with enhanced mobile broadband, including very high capacity (e.g., ~10Tbps / km 2 ), extremely high data rates (e.g., multi-Gbps rates, 100+Mbps user experience rates), and deep perception with advanced discovery and optimization.

[0025] 5G NR can be implemented to use an optimized OFDM-based waveform with scalable parameter sets and transmission time intervals (TTI); have a common, flexible framework to effectively multiplex services and features using dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) designs; and use advanced wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter wave (mmWave) transmission, advanced channel coding, and device-centric mobility. The scalability of the parameter set in 5GNR can effectively address the operation of various services on various spectrums and various deployments by scaling the subcarrier spacing. For example, in various outdoor and macro coverage deployments of less than 3GHz FDD / TDD implementations, the subcarrier spacing can appear at 15kHz, such as on bandwidths of 1, 5, 10, 20MHz, etc. For other various outdoor and small cell coverage deployments of TDD greater than 3GHz, the subcarrier spacing can appear at 30kHz on 80 / 100MHz bandwidth. For various other indoor broadband implementations, using TDD on the unlicensed portion of the 5 GHz band, the subcarrier spacing may occur at 60 kHz over a 160 MHz bandwidth. Finally, for various deployments transmitting with the mmWave component at 28 GHz TDD, the subcarrier spacing may occur at 120 kHz over a 500 MHz bandwidth.

[0026] 5G NR's scalable parameter sets facilitate scalable TTIs for various latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long and short TTIs allows transmissions to start on symbol boundaries. 5G NR also considers a self-contained integrated subframe design with uplink / downlink scheduling information, data, and acknowledgment in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink / downlink, which can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current business needs.

[0027] Various other aspects and features of the present disclosure are further described below. It should be clear that the teachings herein can be embodied in various forms, and any specific structure, function, or both disclosed herein are only representative and non-restrictive. Based on the teachings herein, it should be understood by those of ordinary skill in the art that the aspects disclosed herein can be implemented independently of any other aspects, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement a device or practice a method. In addition, other structures, functions, or structures and functions attached to one or more aspects set forth herein or in addition to one or more aspects set forth herein can be used to implement such a device or practice such a method. For example, a method can be implemented as a part of a system, device, device, and / or as an instruction stored on a computer-readable medium for execution on a processor or computer. In addition, an aspect can include at least one element of a claim.

[0028] Figure 1 1 is a block diagram illustrating an example of a wireless communication system 100 supporting configured grant (CG) channel occupancy time (COT) sharing according to aspects of the present disclosure. A UE (e.g., UE 115) sharing a COT may indicate in an uplink control indicator (UCI) a remaining COT duration, an offset indication identifying where the uplink transmission is expected to end, and a channel access priority class (CAPC), which a base station (e.g., base station 105) may use to determine which type of data may be included in a downlink transmission in the shared COT. In the case where an energy detection (ED) threshold has not been configured for COT sharing, UE 115 may reduce the information included in the UCI. Base station 112 may alternatively configure which information for UE 115 is included in the UCI for potential COT sharing. COT sharing information may also be compressed by encoding such information into a table or utilizing knowledge of transmission characteristics (e.g., configured end points). Wireless communication system 100 includes base station 105, UE 115, and core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or an NR network. In some cases, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, or communications with low-cost and low-complexity devices.

[0029] The base station 105 can communicate wirelessly with the UE 115 via one or more base station antennas. The base station 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga-NodeB (all of which may be referred to as a gNB), a home NodeB, a home eNodeB, or some other suitable term. The wireless communication system 100 may include different types of base stations 105 (e.g., macro cell base stations or small cell base stations). The UE 115 described herein is capable of communicating with various types of base stations 105 and network devices, including macro eNBs, small cell eNBs, gNBs, relay base stations, etc.

[0030] Each base station 105 may be associated with a particular geographic coverage area 110 in which communications with various UEs 115 are supported. Each base station 105 may provide communications coverage for a respective geographic coverage area 110 via a communications link 125, and the communications link 125 between the base station 105 and the UE 115 may utilize one or more carriers. The communications link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. Downlink transmissions may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions.

[0031] The geographic coverage area 110 for the base station 105 can be divided into sectors that constitute a portion of the geographic coverage area 110, and each sector can be associated with a cell. For example, each base station 105 can provide communication coverage for a macro cell, a small cell, a hotspot, or other type of cell, or various combinations thereof. In some examples, the base station 105 can be mobile and thus provide communication coverage for a mobile geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, and overlapping geographic coverage areas 110 associated with different technologies can be supported by the same base station 105 or different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous LTE / LTE-A / LTE-A Pro or NR network, in which different types of base stations 105 provide coverage for various geographic coverage areas 110.

[0032] The term "cell" refers to a logical communication entity used to communicate with base station 105 (e.g., via a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID)) used to distinguish adjacent cells operating via the same or different carriers. In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types that may provide access to different types of devices (e.g., machine type communication (MTC), narrowband Internet of Things (NB-IoT), enhanced mobile broadband (eMBB), or other). In some cases, the term "cell" may refer to a portion (e.g., a sector) of a geographic coverage area 110 on which the logical entity operates.

[0033] UE 115 can be dispersed throughout the wireless communication system 100, and each UE 115 can be fixed or mobile. UE 115 can also be referred to as a mobile device, a wireless device, a remote device, a handheld device or a subscriber device, or some other suitable term, where "device" can also be referred to as a unit, a station, a terminal or a client. UE 115 can also be a personal electronic device, such as a cellular phone (UE 115a), a personal digital assistant (PDA), a wearable device (UE 115d), a tablet computer, a laptop computer (UE 115g) or a personal computer. In some examples, UE 115 can also refer to a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device or an MTC device, etc., which can be implemented in various items such as household appliances, vehicles (UE 115e and UE 115f), meters (UE 115b and UE 115c), etc.

[0034] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communications between machines (e.g., via machine-to-machine (M2M) communications). M2M communications or MTC may refer to data communications technology that allows devices to communicate with each other or with a base station without human intervention. In some examples, M2M communications or MTC may include communications from devices that have integrated sensors or meters to measure or capture information and relay that information to a central server or application that may utilize the information or present it to a person interacting with the program or application. Some UEs 115 may be designed to collect information or enable automated behavior of machines. Some application examples of MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, medical monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based commercial billing.

[0035] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power saving "deep sleep" mode when not engaged in active communication, or operating over a limited bandwidth (e.g., in accordance with narrowband communication). In other cases, UE 115 may be designed to support critical functions (e.g., mission critical functions), and the wireless communication system 100 may be configured to provide ultra-reliable communication for these functions.

[0036] In some cases, UE 115 is also able to communicate directly with other UE 115 (e.g., using peer-to-peer (P2P) or device-to-device (D2D) protocols). One or more of a group of UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in the group may be outside the geographic coverage area 110 of the base station 105, or may be unable to receive transmissions from the base station 105 for other reasons. In some cases, a group of UEs 115 communicating via D2D communication may use a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some cases, the base station 105 may facilitate the scheduling of resources for D2D communication. In other cases, D2D communication may be performed between UEs 115 without involving the base station 105.

[0037] The base stations 105 may communicate with the core network 130 and with each other. For example, the base stations 105 may be connected to the core network 130 via a backhaul link 132 (e.g., via S1, N2, N3, or other interface). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130) via a backhaul link 134 (e.g., via X2, Xn, or other interface).

[0038] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet data network (PDN) gateway (P-GW). The MME may manage non-access stratum (e.g., control plane) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the EPC. User IP packets may be sent via the S-GW, which itself may be connected to the P-GW. The P-GW may provide IP address allocation and other functions. The P-GW may be connected to network operator IP services. Operator IP services may include access to the Internet, intranet, IP multimedia subsystem (IMS), and packet switched (PS) streaming services.

[0039] At least some of the network devices, such as base stations 105, may include subcomponents, such as access network entities, which may be examples of access node controllers (ANCs). Each access network entity may communicate with UE 115 through multiple other access network transport entities, which may be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). In some configurations, the various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., radio heads and access network controllers) or merged into a single network device (e.g., base station 105).

[0040] The wireless communication system 100 can operate using one or more frequency bands typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the length of the wavelength ranges from about 1 decimeter to 1 meter. Buildings and environmental features may block or redirect UHF waves. However, the waves are sufficient to penetrate the structure so that the macrocell provides service to the UE 115 located indoors. Compared to transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz, transmissions of UHF waves can be associated with smaller antennas and shorter distances (e.g., less than 100 km).

[0041] The wireless communication system 100 may also operate in the Super High Frequency (SHF) region (also known as the centimeter band) using frequency bands from 3 GHz to 30 GHz. The SHF region includes the 5 GHz Industrial, Scientific, and Medical (ISM) bands, which may be opportunistically used by devices that can tolerate interference from other users.

[0042] The wireless communication system 100 may also operate in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also referred to as the millimeter band. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the various devices may be even smaller and more closely spaced than the UHF antennas. In some cases, this may facilitate the use of antenna arrays within the UE 115. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary from country to country or regulatory agency.

[0043] The wireless communication system 100 may include operations performed by different network operating entities (e.g., network operators), where each network operator may share a spectrum. In some instances, a network operating entity may be configured to use the entire designated shared spectrum for at least a period of time before another network operating entity uses the entire designated shared spectrum for a different period of time. Therefore, in order to allow network operating entities to use the entire designated shared spectrum, and to mitigate interfering communications between different network operating entities, specific resources (e.g., time) may be divided and allocated to different network operating entities for specific types of communications.

[0044] For example, a network operating entity may be allocated certain time resources that are reserved for exclusive communications by the network operating entity using the entire shared spectrum. Other time resources may also be allocated to a network operating entity where that entity is given priority over other network operating entities to communicate using the shared spectrum. If the prioritized network operating entity does not use these resources, then these time resources prioritized for use by the network operating entity may be used by other network operating entities on an opportunistic basis. Additional time resources may be allocated to any network operator for use on an opportunistic basis.

[0045] Arbitration of access to shared spectrum and time resources between different network operating entities can be centrally controlled by a separate entity, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operator.

[0046] In various embodiments, the wireless communication system 100 may use licensed and unlicensed radio spectrum bands. For example, the wireless communication system 100 may employ license assisted access (LAA), unlicensed LTE (LTE-U) radio access technology, or NR technology in an unlicensed band (NR-U) such as the 5 GHz ISM band. In some cases, the UE 115 and the base station 105 of the wireless communication system 100 may operate in a shared unlicensed radio spectrum band, which may include licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed portion of the shared radio spectrum band, the UE 115 or the base station 105 may conventionally perform medium sensing procedures to contend for access to the spectrum. For example, the UE 115 or the base station 105 may perform a listen before talk (LBT) process, such as a clear channel assessment (CCA), before communicating to determine whether the shared channel is available.

[0047] CCA may include an energy detection process to determine if there are any other active transmissions on the shared channel. For example, a device may infer that a change in the received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. Specifically, signal power concentrated in a particular bandwidth and exceeding a predetermined noise floor may indicate another wireless transmitter. CCA may also include message detection of a particular sequence indicating channel usage. For example, another device may send a particular preamble before sending a data sequence. In some cases, the LBT process may include a wireless node acting as a conflicting agent to adjust its own backoff window based on the amount of energy detected on the channel and / or acknowledgement / negative acknowledgement (ACK / NACK) feedback for its own transmitted packets.

[0048] Generally, four categories of LBT procedures have been proposed for sensing signals in a shared channel that may indicate that the channel is already occupied. In the first category (CAT 1 LBT), no LBT or CCA is applied to detect occupancy of a shared channel. The second category (CAT 2 LBT), which may also be referred to as shortened LBT, single LBT, or 25 μs LBT, provides for nodes to perform CCA to detect energy above a predetermined threshold or to detect a message or preamble occupying a shared channel. CAT 2 LBT performs CCA without using a random backoff operation, which results in its shortened length relative to the next category.

[0049] The third category (CAT 3LBT) performs CCA to detect energy or messages on a shared channel, but also uses random backoff and a fixed contention window. Therefore, when a node initiates CAT 3LBT, it performs a first CCA to detect occupancy of the shared channel. If the shared channel is idle for the duration of the first CCA, the node can continue to transmit. However, if the first CCA detects a signal occupying the shared channel, the node selects a random backoff based on the fixed contention window size and performs an extended CCA. If the shared channel is detected to be idle during the extended CCA and the random number has been decremented to 0, the node can start transmitting on the shared channel. Otherwise, the node decrements the random number and performs another extended CCA. The node will continue to perform extended CCAs until the random number reaches 0. If the random number reaches 0 without any extended CCA detecting channel occupancy, the node can transmit on the shared channel. If the node detects channel occupancy in any extended CCA, the node can reselect a new random backoff based on the fixed contention window size to start the countdown again.

[0050] The fourth category (CAT4 LBT), which may also be referred to as a full LBT process, performs CCA with energy or message detection using random backoff and a variable contention window size. The sequence of CCA detection is similar to the process of CAT3 LBT, except that the contention window size is variable for the CAT4 LBT process.

[0051] Using a medium sensing process to contend for access to an unlicensed shared spectrum can result in communication inefficiencies. This may be particularly evident when multiple network operating entities (e.g., network operators) attempt to access shared resources. In a wireless communication system 100, a base station 105 and a UE 115 may be operated by the same or different network operating entities. In some examples, a separate base station 105 or UE 115 may be operated by more than one network operating entity. In other examples, each base station 105 and UE 115 may be operated by a single network operating entity. Requiring each base station 105 and UE 115 of a different network operating entity to contend for shared resources may result in increased signaling overhead and communication delays.

[0052] In some cases, operation in an unlicensed band may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA). Operations in the unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these. Duplexing in the unlicensed spectrum may be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of both.

[0053] In some examples, the base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. For example, the wireless communication system 100 may use a transmission scheme between a transmitting device (e.g., a base station 105) and a receiving device (e.g., a UE 115), wherein the transmitting device is equipped with multiple antennas and the receiving device is equipped with one or more antennas. MIMO communications may employ multipath signal propagation to increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing. For example, multiple signals may be transmitted by a transmitting device via different antennas or different antenna combinations. Similarly, a receiving device may receive multiple signals via different antennas or different antenna combinations. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams. Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO), where multiple spatial layers are sent to the same receiving device, and multi-user MIMO (MU-MIMO), where multiple spatial layers are sent to multiple devices.

[0054] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105 or a UE 115) to shape or direct an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals transmitted via antenna elements of an antenna array so that signals propagating in a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying certain amplitude and phase offsets to signals transmitted via each antenna element associated with the device. Adjustments associated with each antenna element may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other direction).

[0055] In one example, the base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with the UE 115. For example, some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the base station 105 in different directions, which may include signals sent according to different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by the base station 105 or a receiving device, such as the UE 115) to identify a beam direction for subsequent transmission and / or reception by the base station 105.

[0056] Some signals, such as data signals associated with a particular receiving device, may be sent by base station 105 in a single beam direction (e.g., a direction associated with a receiving device, such as UE 115). In some examples, a beam direction associated with transmissions along a single beam direction may be determined based at least in part on signals sent in different beam directions. For example, UE 115 may receive one or more signals sent by base station 105 in different directions, and UE 115 may report to base station 105 an indication of the signal it received with the highest signal quality or other acceptable signal quality. Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0057] A receiving device (e.g., UE 115, which may be an example of a mmW receiving device) may attempt multiple receive beams when receiving various signals from base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, the receiving device may attempt multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receive beams or receive directions. In some examples, the receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving data signals). The single receive beam may be aligned in a beam direction determined at least in part based on listening according to different receive beam directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio, or other acceptable signal quality based at least in part on listening according to multiple beam directions).

[0058] In some embodiments, the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays that may support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some cases, the antennas or antenna arrays associated with a base station 105 may be located at different geographic locations. A base station 105 may have an antenna array having multiple rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with a UE 115. Likewise, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.

[0059] In other cases, UE 115 and base station 105 can support retransmission of data to increase the possibility of successfully receiving data. HARQ feedback is a technique to increase the possibility of correctly receiving data through communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput of the MAC layer under poor radio conditions (e.g., signal-to-noise ratio conditions). In some cases, a wireless device can support same-slot HARQ feedback, where the device can provide HARQ feedback for data received in a previous symbol in a slot in a specific slot. In other cases, the device can provide HARQ feedback in a subsequent slot or according to some other time interval.

[0060] The time interval in LTE or NR can be expressed in basic time units (which may be referred to as T s =1 / 30,720,000 seconds). The time intervals of the communication resources may be organized according to radio frames each having a duration of 10 milliseconds (ms), where the frame period may be denoted as T f =307,200T s. Radio frames can be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame can include 10 subframes numbered from 0 to 9, and each subframe can have a duration of 1 ms. The subframe can be further divided into 2 time slots, each with a duration of 0.5 ms, and each time slot contains 6 or 7 modulation symbol periods (depending on the length of the cyclic prefix preceding each symbol period). Excluding the cyclic prefix, each symbol period can contain 2048 sampling periods. In some cases, the subframe can be the smallest scheduling unit of the wireless communication system 100, which can be referred to as a TTI. In other cases, the minimum scheduling unit of the wireless communication system 100 can be shorter than a subframe or can be dynamically selected (for example, in a burst of a shortened TTI (sTTI) or in a selected component carrier using sTTI).

[0061] In some wireless communication systems, a time slot may be further divided into multiple mini-slots containing one or more symbols. In some cases, a symbol of a mini-slot or a mini-slot may be the minimum scheduling unit. For example, the duration of each symbol may vary depending on the subcarrier spacing or the operating frequency band. In addition, some wireless communication systems may implement time slot aggregation, where multiple time slots or mini-slots are aggregated together and used for communication between UE 115 and base station 105.

[0062] The term "carrier" as used herein refers to a set of radio spectrum resources with a defined physical layer structure for supporting communications on the communication link 125. For example, a carrier of the communication link 125 may include a portion of a radio spectrum band that operates according to a physical layer channel for a given radio access technology. Each physical layer channel may carry user data, control information, or other signaling. A carrier may be associated with a predefined frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by a UE 115. A carrier may be a downlink or uplink (e.g., in FDD mode), or may be configured to carry downlink and uplink communications (e.g., in TDD mode). In some examples, a signal waveform sent on a carrier may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)).

[0063] The organization structure of the carrier can be different for different radio access technologies (e.g., LTE, LTE-A, LTE-A Pro, NR). For example, communications on a carrier can be organized according to TTIs or time slots, each of which can include user data and control information or signaling to support decoding of user data. A carrier can also include dedicated acquisition signaling (e.g., synchronization signals or system information, etc.) and control signaling to coordinate carrier operations. In some examples (e.g., in a carrier aggregation configuration), a carrier can also have acquisition signaling or control signaling to coordinate the operation of other carriers.

[0064] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. In some examples, control information sent in a physical control channel may be distributed in a cascaded manner between different control regions (e.g., between a common control region or common search space and one or more UE-specific control regions or UE-specific search spaces).

[0065] A carrier may be associated with a particular bandwidth of the radio spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of predetermined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). In some examples, each served UE 115 may be configured to operate on part or all of the carrier bandwidth. In other examples, some UEs 115 may be configured to operate using a narrowband protocol type associated with a predefined portion or range (e.g., a set of subcarriers or RBs) within a carrier (e.g., an "in-band" deployment of a narrowband protocol type).

[0066] In a system using MCM technology, a resource element may consist of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme). Therefore, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 can be. In a MIMO system, wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and space resources (e.g., space layers), and the use of multiple space layers may further increase the data rate used to communicate with UE 115.

[0067] A device of the wireless communication system 100 (e.g., a base station 105 or a UE 115) may have a hardware configuration that supports communication on a specific carrier bandwidth, or may be configured to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 and / or a UE 115 that may support simultaneous communication via carriers associated with more than one different carrier bandwidths.

[0068] The wireless communication system 100 may support communication with the UE 115 on multiple cells or carriers, a feature that may be referred to as carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both FDD and TDD component carriers.

[0069] In some cases, the wireless communication system 100 may use an enhanced component carrier (eCC). An eCC may be characterized by one or more characteristics, including a wider carrier or frequency channel bandwidth, a shorter symbol duration, a shorter TTI duration, or a modified control channel configuration. In some instances, an eCC may be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). An eCC may also be configured for use in unlicensed spectrum or shared spectrum (e.g., where more than one operator is allowed to use the spectrum, such as NR-Shared Spectrum (NR-SS)). An eCC characterized by a wide carrier bandwidth may include one or more segments that may be used by UEs 115 that are not capable of monitoring the entire carrier bandwidth or are configured to use a limited carrier bandwidth (e.g., to save power).

[0070] In other cases, the eCC may use a different symbol duration than other component carriers, which may include using a reduced symbol duration compared to the symbol duration of other component carriers. A shorter symbol duration may be associated with an increased spacing between adjacent subcarriers. A device utilizing an eCC (such as a UE 115 or a base station 105) may transmit a wideband signal (e.g., according to a frequency channel or carrier bandwidth of 20, 40, 60, 80 MHz, etc.) with a reduced symbol duration (e.g., 16.67 microseconds). A TTI in an eCC may consist of one or more symbol periods. In some cases, the TTI duration (i.e., the number of symbol periods in a TTI) may be variable.

[0071] The wireless communication system 100 may be an NR system that may utilize any combination of licensed, shared, and unlicensed spectrum bands, etc. The flexibility of eCC symbol duration and subcarrier spacing may allow eCC to be used across multiple spectrums. In some examples, NR shared spectrum may increase spectrum utilization and spectrum efficiency, specifically through dynamic vertical (e.g., across frequency domain) and horizontal (e.g., across time domain) sharing of resources.

[0072] Figure 2 A block diagram shows a design of a base station 105 and a UE 115, which may be Figure 1 One of the base stations and UEs in the base station 105. At the base station 105, the transmit processor 220 can receive data from the data source 212 and receive control information from the controller / processor 240. The control information can be used for PBCH, PCFICH, PHICH, PDCCH, EPDCCH, MPDCCH, etc. The data can be used for PDSCH, etc. The transmit processor 220 can process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 can also generate reference symbols for PSS, SSS, and cell-specific reference signals, for example. The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and can provide output symbol streams to modulators (MOD) 232a to 232t. Each modulator 232 can process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (eg, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0073] At the UE 115, antennas 252a to 252r may receive downlink signals from the base station 105 and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all demodulators 254a to 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 115 to a data receiver 260, and provide decoded control information to a controller / processor 280.

[0074] On the uplink, at the UE 115, a transmit processor 264 may receive and process data from a data source 262 (e.g., for the PUSCH) and control information from the controller / processor 280 (e.g., for the PUCCH). The transmit processor 264 may also generate reference symbols for a reference signal. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signal from the UE 115 may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 115. The processor 238 may provide the decoded data to the data receiver 239 and the decoded control information to the controller / processor 240.

[0075] The controller / processors 240 and 280 may direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 may perform or direct the execution of various processes for the techniques described herein. The controller / processor 280 and / or other processors and modules at the UE 115 may also perform or direct the execution of various processes for the techniques described herein. Figure 3 Execution of the functional blocks shown in and / or execution of other processes for the techniques described herein. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0076] In NR-U operation, channel occupancy time (COT) sharing is considered in the context of configured grant (CG) resources. Each CG resource may include periodic uplink resources and may be associated with a set of hybrid automatic repeat request (HARQ) identifiers. Before each uplink transmission within the CG resource, the UE may perform Cat-4 LBT to protect access to the shared communication channel. After the LBT is successful and until the end of the COT, the UE may send multiple uplink transmissions (e.g., PUSCH) without any transmission gaps. The COT acquired by the UE may be shared with the serving base station to send or broadcast control or data transmissions to the UE. COT sharing may be useful when the UE does not perform uplink transmissions throughout the COT duration. The serving base station may share the COT by performing a shortened LBT (e.g., Cat-2 LBT) or by not performing the LBT process. In order to allow COT sharing, the UE may provide COT sharing information within an uplink control indicator (UCI) message regarding the acquired COT. Various aspects of the present disclosure relate to identifying and using such CG-UCI information related to COT sharing and performing CG UL transmissions in a manner that allows the serving base station to perform shortened LBT.

[0077] Figure 3 is a block diagram showing example blocks that are executed to implement one aspect of the present disclosure. Figure 2 and 7 The example blocks are described with reference to the UE 115 shown in FIG. Figure 7 1 is a block diagram illustrating a UE 115 configured according to one aspect of the present disclosure. The UE 115 includes a Figure 2 1. The UE 115 of the present invention may be a wireless communication system, a wireless communication system, or a wireless communication system. The UE 115 may include a controller / processor 280 that operates to execute logic or computer instructions stored in a memory 282 and control components of the UE 115 that provide features and functions of the UE 115. The UE 115 transmits and receives signals via radios 700a-r and antennas 252a-r under the control of the controller / processor 280. The radios 700a-r include the following: Figure 2 1 , including modulators / demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266.

[0078] At block 300, in response to detecting that the UE's LBT procedure is successful on the shared communication channel, the UE obtains the COT. A UE such as UE 115 obtains the configured authorization configuration information at the configured authorization configuration 701 and stores it in the memory 282. The UE 115 may receive such configured authorization configuration information from a configuration signal of a serving base station via antennas 252a-r and radios 700a-r. The configured authorization configuration 701 provides the UE 115 with identification of resources, starting points, end points, etc., so that when the uplink data is present in the data buffer 706 in the memory 282, the UE 115 sends the uplink data without a scheduled authorization. With knowledge of the configured authorized uplink resources on the shared communication spectrum, the UE 115 may attempt to protect the COT by executing the LBT logic 702 in the memory 282. Under the control of the controller / processor 280, the UE 115 executes the LBT logic 702, which generates instructions and controls for various components of the UE 115, such as the radios 700a-r and antennas 252a-r. Figure 2 1. When executing the LBT logic 702, an environment ("execution environment") is created within the UE 115 when executing instructions and controlling various hardware and components, and the UE 115 can monitor the shared communication channel via the antennas 252a-r and the radio devices 700a-r to detect the energy level on the shared communication channel. If no energy level above the energy detection (ED) threshold is detected, the UE 115 can detect the success of the LBT process within the execution environment of the LBT logic 702. Upon detecting a successful LBT process, the UE 115 acquires a COT on the shared communication channel.

[0079] At block 301, the UE determines whether COT sharing is one of enabled or not enabled. To support COT sharing, the UE 115 executes COT sharing logic 703 stored in the memory 282 under the control of the controller / processor 280. The execution environment of the COT sharing logic 703 provides the UE 115 with the functionality and control of various hardware and components to determine whether COT sharing is enabled, and if enabled, monitor its transmission so that the UE 115 will not transmit on the entire COT when the UE 115 shares the UE-initiated COT with the serving base station. In one example aspect, within the execution environment of the COT sharing logic 703, the UE 115 can detect whether the ED threshold of the LBT process used to obtain the COT according to the LBT logic 702 is configured for COT sharing by the serving base station. If not, the UE 115 can determine that COT sharing is not enabled. Otherwise, if it is configured for COT sharing by the serving base station, the UE 115 can determine that COT sharing is enabled. In an additional aspect, the execution environment of the COT sharing logic 703 can operate to prompt the UE 115 to detect configuration information received from the serving base station via the antenna 252a-r and the radio device 700a-r, which configures which COT sharing information should be included in the uplink control message to the serving base station, or configures COT sharing as enabled or not enabled. Based on these additional serving base station configurations, the UE 115 will determine whether COT sharing has been enabled.

[0080] At block 302, the UE identifies COT sharing information for transmission to the serving base station within an uplink control message, wherein the COT sharing information is identified in response to the determination. Depending on whether COT sharing is enabled, the COT sharing information 704 stored in the memory 282 may be identified as specific COT sharing information to be shared between the UE 115 and the serving base station. The COT sharing information 704 may include a remaining COT duration or a COT end point, which indicates to the serving base station how long the downlink transmission may be performed, an offset indication, which indicates where the expected UE transmission ends or at what moment the base station may perform a shortened LBT; and a channel access priority class (CAPC) used by the UE for COT acquisition. The CAPC allows the serving base station to determine what type of data may be included in the downlink communication within the shared COT. When the UE 115 determines that COT sharing has been enabled, it may include all such COT sharing information in the uplink control message. In addition, the COT sharing information 704 may be encoded or compressed to reduce the signaling overhead of the information to be included in the uplink control message. When the UE 115 determines that COT sharing has not been enabled, it may identify some of the COT sharing information to be removed from the uplink control message. For example, when COT sharing is not enabled, the UE 115 will not identify the CAPC and may not identify other COT sharing information to include in the uplink control message. Once the COT sharing information has been identified based on whether COT sharing is enabled, the UE 115 executes the UCI generator 705 in the memory 282 under the control of the controller / processor 280. The execution of the UCI generator 705 provides the UE 115 with functions and instructions to generate an uplink control message including the identified COT sharing information.

[0081] At block 303, the UE sends an uplink control message with the COT sharing information to the serving base station. Once the uplink control message has been generated via execution of the UCI generator 705 and includes the identified COT sharing information, the UE 115, under the control of the controller / processor 280, may send the uplink control message to the serving base station via the radios 700a-r and antennas 252a-r.

[0082] Figure 4400 . 401 . 402 . 403 . 404 . 405 . 406 . 407 . 408 . 409 . 410 . 411 . 412 . 409 . 413 . 414 . 405 . 415 . 406 . 407 . 408 . 419 . 410 . 420 . 421 . 409 . 411 . 401 . 402 . 403 . 404 . 405 . 416 . 407 . 408 . 409 . 417 . 409 . 418 . 419 . 420 . 401 . 402 . 403 . 404 . 405 . 419 . 421 . 406 . 407 . 408 .

[0083] It has been suggested that COT sharing may be affected based on the value of an energy detection (ED) threshold configured by the base station. The ED threshold applied by the UE 115a when performing Cat-4 LBT 400 to obtain a COT 401 that may be shared with a serving base station such as the base station 105 is configured by the base station 105 via configuration information 405 (such as via RRC signaling, etc.). The base station 105 may configure an ED threshold for COT sharing, configure a standard ED threshold that is not intended for COT sharing, or simply do not configure an ED threshold for COT sharing. If not configured, the UE 115a will default to using a standard ED threshold that is not intended for COT sharing when performing the Cat-4 LBT 400 process to guarantee COT 401 on a shared communication channel.

[0084] When the ED threshold is not configured for COT sharing, when the UE 115a stops uplink transmission 402 before the end 404 of the COT 401, the base station 105 may still perform downlink transmission 407 within the remaining COT duration 403. However, in such a scenario, the downlink transmission 407 of the base station 105 in the UE-initiated COT 401 may be limited to control signals, broadcast signals, or control or broadcast channel transmissions of up to 2, 4, or 8 OFDM symbols in duration for a subcarrier spacing of 15, 30, or 60 kHz subcarrier spacing (SCS), respectively. In such a scenario, when COT sharing has not been enabled, some of the COT sharing information provided in the uplink control indicator (UCI) message 406 may be redundant (e.g., CAPC, COT duration, etc.). In addition, in some cases, the base station 105 may not be interested in COT sharing. Thus, the UE 115a may determine which fields of the COT sharing information may be included in the UCI 406 based on the configuration information 405 from the base station 105 .

[0085] According to one aspect of the present disclosure, the COT sharing information to be included in the configured grant uplink control message UCI 406 may depend on whether a COT sharing ED threshold is configured. When the COT sharing ED threshold is not configured, the UE 115a may suppress or remove the CAPC and reduce the bit width of the remaining COT duration in the UCI 406. In one example embodiment, the UE 115a may completely remove the COT duration field. However, the UE 115a should still ensure that there is enough space in the COT 401 to allow the serving base station to send a downlink transmission 407 by limiting its uplink transmission 402. In another example embodiment, the UE 115a may include a 1-bit value in the UCI 406 indicating whether the base station 105 is allowed to use the COT 401 obtained by the UE 115a to send or broadcast control or data signaling. This may be determined based on whether the remaining COT duration 403 is sufficient for broadcast or control transmission. In another example embodiment, the UE 115a may include within the COT 401 acquired by the UE 115a a number of symbols available for broadcast or control transmissions using the UCI 406. The number may be based on a reference parameter set (e.g., the highest SCS supported by the UE 115a or 60kHz or the SCS of the active BWP).

[0086] According to another aspect of the present disclosure, the base station 105 may directly configure the UE 115a with which fields are to be included in the UCI 406. For example, the base station 105 may indicate in the configuration information 405 whether the CAPC is included, and may also indicate the granularity of the remaining COT duration 403. Based on such information, the UE 115 may determine whether the base station 105 enables COT sharing. For example, if the CAPC and the remaining COT duration 403 or the COT end point 404 are excluded from the uplink control message (e.g., UCI 406), the UE 115a may assume that COT sharing is disabled. In this case, the UE 115a will use the standard ED threshold that is not configured for sharing instead of the COT sharing ED threshold.

[0087] According to another aspect of the present disclosure, the serving base station, i.e., the base station 105, may directly configure the UE 115a whether to enable COT sharing via the configuration information 405. Based on the enabling configuration, the UE 115a may determine which COT sharing information fields are to be included in the UCI 406. When the base station 105 configures in the configuration information 405 to enable COT sharing, the UE 115a may use the COT sharing ED threshold, but when the base station 105 configures in the configuration information 405 not to enable COT sharing, the UE 115a may then use the standard ED threshold instead of the COT sharing ED threshold.

[0088] It should be noted that UE 115a can start the configured grant transmission, i.e., uplink transmission 402, within the timeslot, for example when configured based on a mini-slot and adding a cyclic prefix (CP). Therefore, the moment of the COT end point 404 can also use the same granularity as the PUSCH transmission start point. If the number of PUSCH starting points within the timeslot is large, this may result in a higher signaling overhead for the remaining COT duration field. Similarly, if the COT end point 404 occurs in a given symbol within the timeslot, UE115a can end the configured grant transmission, i.e., uplink transmission 402, at any symbol within the timeslot. Therefore, the number of COT shared information bits can be large and can even indicate a transmission end offset value within the UCI 406. Additional aspects of the present disclosure relate to compressing this type of COT shared information.

[0089] In one aspect of the present disclosure, the UE 115a can reduce the signaling of the remaining transmission time within the remaining COT duration 403 and the UCI 406. Since the transmission end time will occur earlier than the COT end point 404, the UE 115a can jointly encode and compress this information into the UCI 406. Similarly, since the transmission end point is affected based on the selected CAPC value, the CAPC can also be jointly compressed. For different CAPCs, the COT duration can be different. For greater flexibility, a resource indicator value (RIV) table can be used to compress the signaling information for the transmission end time, the COT end point, and the CAPC. Each entry of the RIV table can provide a combination of the CAPC, the remaining transmission time, and the remaining COT duration. Each of the UE 115a and the base station 105 has a copy of the RIV table. The RIV table can also use granularity at the slot, multiple symbols, or mini-slot level. In order to further compress the signaling of the remaining transmission time, the signaling can take advantage of the fact that the uplink transmission ends at the PUSCH end boundary configured by the base station 105 in the configuration information 405. The signaling of the remaining COT duration 403 may also be compressed by exploiting the fact that the PUSCH start position is limited by the base station configuration. For example, the RIV table entry may have a granularity of the PUSCH slot end boundary and the PUSCH start point for the remaining transmission time and the remaining COT duration, respectively. The UE 115a will include an index to the RIV table associated with the desired entry and set of COT sharing information for inclusion in the UCI 406.

[0090] In another aspect of the present disclosure, the transmission end point and the remaining COT duration can be jointly encoded by using a starting length indicator value (SLIV) method. In a first example embodiment, the starting value and the length value of the SLIV can have the granularity of the PUSCH end point and the PUSCH starting point configured by the base station 105, respectively. In a second example embodiment, the SLIV table can provide the end point offset and the remaining COT duration with a coarser granularity, such as providing the starting value and the length value sequentially on the time slot, or having the starting value of the granularity of the PUSCH transmission end point configured by the base station 105 in the configuration information 405, and the length value with the granularity of the time slot, or having the starting value of the time slot granularity and the length value with the granularity of the PUSCH starting point. If no other information is provided, the base station 105 can work with an approximate value. Here, the UE 115 will also include an index to the SLIV table pointing to the desired starting length indicator value set in the UCI 406. The base station 105 will use the received index to identify the correct entry in the SLIV table at the base station 105.

[0091] It should be noted that additional aspects of the present disclosure may provide for the UE 115a to include additional COT shared information fields within the UCI 406 to provide corrections to the values ​​indicated by the SLIV table. For example, the exact transmission endpoint within a time slot may be indicated in a separate field in the UCI 406, where the bit width may be determined based on the allowed PUSCH transmission endpoints within the time slot. Additionally, the exact COT endpoint 404 within a time slot may be indicated based on the granularity of the PUSCH transmission start point.

[0092] Additional aspects of the present disclosure relate to separately compressing the transmission end point and the remaining COT duration 403. The COT duration bit width may be derived based on the PUSCH start point granularity. For example, the UE 115a may indicate in the UCI 406 the number of time slots remaining in addition to the end symbol within the time slot, and its bit width may be based on the mini-time slot start point as configured by the base station 105 in the configuration information 405. The offset indicator identifying the end of the uplink transmission 402 may also be compressed, for example by allowing the UE 115a to end its transmission at the PUSCH end point configured by the base station. In this aspect, the UE 115a will indicate the end slot number and the end symbol within the time slot in the UCI 406, and its bit width may be based on the PUSCH end point configured by the base station 105 in the configuration information 405. In an additional example embodiment, when the COT end point 404 falls within the time slot, the UE 115a may be allowed to end its uplink transmission 402 at the end of the time slot or within the time slot. UE 115a may indicate the end in the slot number, and the base station may assume the end of the slot boundary if the end occurs before the COT end 404. Otherwise, base station 105 may determine the end symbol based on the remaining COT duration 403.

[0093] Figure 5 is a block diagram showing a portion of an NR-U network 50 including a UE 115a and a base station 105 with COT sharing capability configured according to one aspect of the present disclosure. In an additional aspect of the present disclosure, the UE 115a may be configured to signal COT sharing information at a fixed location before the end of an uplink transmission. For example, the UE 115a may signal COT sharing information in a UCI message within a PUSCH transmission occurring in two time slots SN-1 and SN before the end point 503 of the uplink transmission. Thus, if the UE 115a uses 10 time slots in COT 500 for its uplink transmission, the first eight time slots may include UCI indicating no COT sharing (e.g., remaining COT duration = 0), while in the last two time slots SN-1 and SN, the UE 115a may include UCI indicating that COT sharing information and COT sharing will occur after a specific number of time slots or after the current time slot, respectively. The end point 503 of the uplink transmission will be calculated based on these last two time slots SN-1 and SN, so the number of bits used for such indication can be significantly reduced. For example, if UE 115a reports UCI indicating that the COT is shared from the first time slot SO, the length until the end point 503 is 505, while the UCI indicating that the COT is shared in the last two time slots SN-1 and SN respectively represents lengths 501 and 502, which are much shorter in length than length 505. This method can also be used to reduce the bit width used for signaling indicating the remaining COT duration.

[0094] It should be noted that this approach of reducing the bit width of certain COT shared information may imply blind decoding from the network since the base station 105 is not aware of the specific format of the UCI used by the UE 115a for a given timeslot.

[0095] When the opportunity to share a UE-initiated COT arises, the serving base station may perform a shortened LBT procedure (e.g., 25μs or 16μs Cat-2 LBT) or no LBT before initiating a downlink transmission. Which LBT the base station performs can be determined based on the LBT capabilities supported by the base station. For any LBT type, the UE will know to provide sufficient gap between the end of the uplink transmission and the end of the COT for the base station to perform the appropriate LBT procedure. For example, for 25μs Cat-2 LBT, the UE will terminate its uplink transmission at least 25μs before the slot or mini-slot boundary.

[0096] Figures 6A-6Cis a block diagram illustrating a UE 115a and a base station 105 with COT sharing capability configured in accordance with aspects of the present disclosure. The UE 115a successfully performs Cat-4 LBT 600 to acquire a COT 601 in a shared communication channel to a COT endpoint 605. When the UE 115a terminates an uplink transmission 602 at a point earlier than a slot or mini-slot or PUSCH boundary, the UE 115a may determine a transport block (TB) size 603 in a variety of ways. For example, as Fig. 6A As shown, a TB size 603 may be selected based on an original endpoint 604 (e.g., a configured PUSCH boundary), wherein rate matching is performed based on a pull-in endpoint 608. The "pull-in" endpoint 608 represents an endpoint selected by the UE 115a to provide the base station 105 with sufficient time to perform a base station LBT procedure. The gap 606 between the original endpoint 604 and the next available downlink opportunity (not shown) is insufficient for the base station 105 to perform a shortened LBT procedure. This prompts the UE 115a to pull the endpoint of the uplink transmission 602 to the pull-in endpoint 608. The additional time gap 607 in addition to the gap 606 provides the base station 105 with sufficient time to perform its LBT procedure for the downlink transmission.

[0097] exist Figure 6B In the second example implementation shown, the TB size 603 may be selected based on the original endpoint 604, wherein rate matching is performed based on the original endpoint 604, and the remaining symbols 609 of the base station 105 (between the pull-in endpoint 608 and the original endpoint 604) are punctured to perform its LBT process. Figure 6C In the third example implementation shown, a TB size 610 may be selected based on a pull-in endpoint 608 , where rate matching is performed based on the pull-in endpoint 608 .

[0098] On the other hand, configured authorized UCI multiplexing may be performed assuming a smaller number of symbols used for uplink transmission regardless of the actual number of symbols used for uplink transmission, assuming an actual number of symbols used for uplink transmission, or assuming a larger number of symbols used for uplink transmission.

[0099] Alternatively, the base station may configure multiple configurations with different endpoints. The UE may then select one of these configurations and report the selection in the UCI message. In one example implementation of the base station configuration, the UE selects all slots with all symbols (0 to 13). In another example implementation of the base station configuration, the UE may select all slots with symbols 0 to 12 in each slot. In another example implementation of the base station configuration, the UE may select slots 0 to N-1 with all symbols, slot N with symbols 0 to 12 (where N is the last transmission slot used by the UE for uplink transmission).

[0100] Those skilled in the art will appreciate that any of a variety of different technologies and methods may be used to represent the information and signals described herein. For example, the data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields, optical fields, particles, or any combination thereof.

[0101] Figure 3 The functional blocks and modules in may include processors, electronic devices, hardware devices, electronic components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof.

[0102] It will be further understood by those skilled in the art that the various illustrative logic boxes, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, various illustrative components, blocks, modules, circuits and steps have been generally described above in terms of their functionality. Whether this function is implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. Those skilled in the art can implement the described functions in different ways for each specific application, but this implementation decision should not be interpreted as causing a departure from the scope of the present disclosure. It will also be readily appreciated by those skilled in the art that the order or combination of components, methods or interactions described herein is merely an example, and the components, methods or interactions of various aspects of the present disclosure can be combined or performed in a manner different from that shown and described herein.

[0103] Various aspects of the present disclosure may be implemented in a number of different aspects and optional implementations. For example, a first aspect of wireless communication according to the present disclosure may include acquiring a COT by a UE in response to detecting that an LBT process of the UE is successful on a shared communication channel; determining by the UE whether COT sharing is enabled or not enabled; identifying by the UE COT sharing information for sending to a serving base station in an uplink control message, wherein the COT sharing information is identified in response to the determination; and sending by the UE an uplink control message having the COT sharing information to the serving base station.

[0104] The second aspect is based on the first aspect, wherein the COT sharing information includes the remaining COT duration from the end of one of the UE uplink transmission during the COT or the PUSCH transmission containing the COT sharing information to the end of the COT; an offset indication identifying the end of the UE uplink transmission; and the CAPC used by the UE to obtain the COT.

[0105] A third aspect is based on the second aspect, wherein the determination includes identifying an ED threshold configuration of the UE; in response to identifying the ED threshold configuration as being configured for sharing, determining that COT sharing is enabled; and in response to identifying the ED threshold configuration as not being configured for sharing, determining that COT sharing is not enabled.

[0106] A fourth aspect, based on the third aspect, wherein identifying COT sharing information includes one of the following: identifying the remaining COT duration, offset indication and CAPC for the uplink control message when it is determined that COT sharing is enabled; or when it is determined that COT sharing is not enabled, identifying the offset indication and one or more of the following for the uplink control message: removal of CAPC; remaining COT duration; a 1-bit flag indicating whether the serving base station is allowed to transmit during the remaining part of the COT; or an indication of the number of symbols available for transmission by the serving base station.

[0107] The fifth aspect is based on the second aspect, wherein the determination includes receiving a configuration message from the serving base station, wherein the configuration message includes an identifier of the COT sharing information to be included in the uplink control message; and determining whether COT sharing is enabled or not enabled based on the identifier of the COT sharing information in the configuration message.

[0108] A sixth aspect, based on the fifth aspect, wherein determining whether COT sharing is enabled or not includes identifying a configuration message indicating exclusion of CAPC and a remaining COT duration from an uplink control message, wherein the UE determines that COT sharing is not enabled in response to identifying the configuration message.

[0109] The seventh aspect, based on the sixth aspect, also includes, in response to the UE identifying COT sharing as not enabled, using an ED threshold configuration that is not configured for sharing for the LBT process.

[0110] An eighth aspect, based on the second aspect, wherein the determination includes receiving a configuration message from the serving base station, wherein the configuration message indicates whether the COT sharing is enabled or not enabled.

[0111] A ninth aspect, based on the eighth aspect, further includes, in response to the UE identifying COT sharing as not enabled, using an ED threshold configuration for the LBT process that is not configured for sharing.

[0112] The tenth aspect is based on the second aspect, wherein the COT sharing information includes an index to a table shared by the UE and the serving base station, wherein the table includes multiple entries, each entry identifying the remaining COT duration, the offset indication indicated as the remaining transmission time, and one or more of the CAPC correspondences.

[0113] An eleventh aspect, based on the tenth aspect, wherein the table uses RIV to compress the remaining COT duration and the remaining transmission time.

[0114] A twelfth aspect, based on the eleventh aspect, wherein the RIV indicates one or more of the following items: the remaining transmission time is the PUSCH time slot boundary at which the UE uplink transmission ends; and the remaining COT duration has the granularity of the starting position of the UE uplink transmission configured by the serving base station.

[0115] A thirteenth aspect, based on the tenth aspect, wherein the table uses a start and length indicator value (SLIV) to jointly encode the remaining COT duration and the offset indication.

[0116] A fourteenth aspect is based on the thirteenth aspect, wherein the length value of the SLIV is indicated in the granularity of the PUSCH transmission starting point, wherein the PUSCH starting point is configured by the serving base station.

[0117] The fifteenth aspect is based on the thirteenth aspect, wherein the starting value of the SLIV is indicated with one of the following granularities: a time slot or an end point of a PUSCH transmission, and the length value of the SLIV is indicated with one of the following granularities: a time slot or a start point of a PUSCH transmission.

[0118] In a sixteenth aspect, based on the thirteenth aspect, the UE further includes adding correction information to the uplink control message, wherein the correction information modifies one or more values ​​in the table indicated by the SLIV.

[0119] In the seventeenth aspect, based on the second aspect, it also includes compressing the remaining COT duration within the uplink control message, wherein the compressed remaining COT duration includes the number of remaining COT time slots indicated by the UE and the end symbol in the last time slot of the said number of remaining COT time slots; and compressing the offset indication within the uplink control message, wherein the compressed offset indication includes the end slot number indicated by the UE and the last symbol of the UE uplink transmission in the end slot number; or one of the number of remaining transmission time slots indicated by the UE.

[0120] In the eighteenth aspect, based on the second aspect, it also includes the UE obtaining a reporting position, wherein the reporting position identifies the number of time slots before the end of the UE uplink transmission, and during the UE uplink transmission, the UE executes sending an uplink control message with COT sharing information to the serving base station, wherein the UE calculates the remaining COT duration and offset indication from the number of time slots before the end of the UE uplink transmission.

[0121] In the nineteenth aspect, based on the second aspect, it also includes the UE determining the time gap between the end of the UE uplink transmission and the start of the subsequent downlink transmission; in response to the time gap exceeding the minimum time for the serving base station to perform the shortened downlink LBT according to the LBT capability, the UE ends the uplink transmission of the UE at the end of the uplink transmission of the UE; and in response to the minimum time exceeding the time gap, the UE ends the uplink transmission of the UE in the end period before the end of the uplink transmission of the UE, wherein the extended time gap between the end periods before the end of the uplink transmission of the UE is sufficient to accommodate the minimum time for the serving base station to perform the shortened LBT.

[0122] The twentieth aspect, based on the nineteenth aspect, also includes the UE determining the transmission block size for UE uplink transmission based on the end of UE uplink transmission utilizing rate matching based on the end of UE uplink transmission; utilizing rate matching based on the end of UE uplink transmission, wherein the UE truncates resources associated with the extended time gap; or utilizing one of the end time periods before the end of UE uplink transmission utilizing rate matching based on the end time period before the end of UE uplink transmission.

[0123] Aspect 21, based on aspect 20, wherein sending an uplink control message includes a multiplexing uplink control message based on a first number of multiplexed symbols that is less than the actual number of multiplexed symbols based on the end of the UE uplink transmission used; based on the actual number of multiplexed symbols based on the end of the UE uplink transmission used; or a second number of multiplexed symbols that is greater than the actual number of multiplexed symbols based on the end of the UE uplink transmission used.

[0124] In the twenty-second aspect, based on the first aspect, it also includes the UE obtaining a transmission configuration set from the serving base station; the UE selecting a transmission configuration from the transmission configuration set; and the UE adding a configuration indicator to the uplink control message, wherein the configuration indicator identifies the transmission configuration for the serving base station.

[0125] The twenty-third aspect of the configuration for wireless communication may include a unit for acquiring a COT by a UE in response to detecting that an LBT process of the UE is successful on a shared communication channel; a unit for determining by the UE whether COT sharing is enabled or not enabled; a unit for identifying by the UE COT sharing information for sending to a serving base station within an uplink control message, wherein the COT sharing information is identified in response to the unit for determining; and a unit for sending by the UE an uplink control message having the COT sharing information to a serving base station.

[0126] Aspect 24, based on aspect 23, wherein the COT sharing information includes the remaining COT duration from the end of one of the UE uplink transmission during the COT or the PUSCH transmission containing the COT sharing information to the end of the COT; an offset indication identifying the end of the UE uplink transmission; and one or more of the CAPCs used by the UE to obtain the COT.

[0127] In the twenty-fifth aspect, based on the twenty-fourth aspect, the unit for determining includes a unit for identifying an energy detection (ED) threshold configuration of the UE; a unit for determining to enable COT sharing in response to identifying the ED threshold configuration as configured for sharing; and a unit for determining not to enable COT sharing in response to identifying the ED threshold configuration as not configured for sharing.

[0128] A twenty-sixth aspect, based on the twenty-fifth aspect, wherein the unit for identifying COT sharing information includes one of the following items: a unit for identifying the remaining COT duration, offset indication and CAPC for the uplink control message when it is determined that COT sharing is enabled; or a unit for identifying the offset indication and one or more of the following items for the uplink control message when it is determined that COT sharing is not enabled: removal of CAPC; remaining COT duration; a 1-bit flag indicating whether the serving base station is allowed to transmit during the remaining part of the COT; or an indication of the number of symbols available for transmission by the serving base station.

[0129] Aspect 27, based on aspect 24, wherein the unit for determining includes a unit for receiving a configuration message from the serving base station, wherein the configuration message includes an identifier of the COT sharing information to be included in the uplink control message; and a unit for determining whether COT sharing is enabled or not enabled based on the identifier of the COT sharing information in the configuration message.

[0130] Aspect 28, based on aspect 27, wherein the unit for determining whether COT sharing is enabled or not includes a unit for identifying a configuration message indicating exclusion of CAPC and remaining COT duration from an uplink control message, wherein the UE determines that COT sharing is not enabled in response to identifying the configuration message.

[0131] In the twenty-ninth aspect, based on the twenty-eighth aspect, it also includes a unit for configuring, by the UE, an energy detection (ED) threshold that is not configured for sharing for the LBT process in response to identifying COT sharing as not enabled.

[0132] A 30th aspect, based on the 24th aspect, wherein the determining unit includes a unit for receiving a configuration message from the serving base station, wherein the configuration message indicates whether the COT sharing is enabled or not enabled.

[0133] In the thirty-first aspect, based on the thirtieth aspect, it also includes a unit for configuring, by the UE, an energy detection (ED) threshold that is not configured for sharing for the LBT process in response to identifying COT sharing as not enabled.

[0134] Aspect 32, based on aspect 24, wherein the COT sharing information includes an index to a table shared by the UE and the serving base station, wherein the table includes multiple entries, each entry identifying one or more of the remaining COT duration, the offset indication indicated as the remaining transmission time, and the CAPC correspondence.

[0135] Aspect 33, based on aspect 32, wherein the table uses a resource indicator value (RIV) to compress the remaining COT duration and the remaining transmission time.

[0136] Aspect 34, based on aspect 33, wherein the RIV indicates one or more of the following: the remaining transmission time serves as a PUSCH time slot boundary at which the UE uplink transmission ends; and the remaining COT duration has the granularity of the starting position of the UE uplink transmission configured by the serving base station.

[0137] A thirty-fifth aspect, based on the thirty-second aspect, wherein the table uses a start and length indicator value (SLIV) to jointly encode the remaining COT duration and the offset indication.

[0138] Aspect 36, based on aspect 35, wherein the length value of the SLIV is indicated in the granularity of the PUSCH transmission starting point, wherein the PUSCH starting point is configured by the serving base station.

[0139] According to the thirty-seventh aspect, based on the thirty-fifth aspect, the starting value of SLIV is indicated with one of the following granularities: time slot or PUSCH transmission end point, and the length value of SLIV is indicated with one of the following granularities: time slot or PUSCH transmission start point.

[0140] In aspect 38, based on aspect 35, further includes a unit for adding correction information to the uplink control message by the UE, wherein the correction information modifies one or more values ​​in the table indicated by SLIV.

[0141] In the thirty-ninth aspect, based on the twenty-fourth aspect, it also includes a unit for compressing the remaining COT duration within the uplink control message, wherein the compressed remaining COT duration includes the number of remaining COT time slots indicated by the UE and the end symbol in the last time slot of the said number of remaining COT time slots; and a unit for compressing the offset indication within the uplink control message, wherein the unit for compressing the offset indication includes a unit for indicating the end slot number by the UE and the last symbol of the UE uplink transmission in the end slot number; or one of the units for indicating the number of remaining transmission time slots by the UE.

[0142] In the 40th aspect, based on the 24th aspect, it also includes a unit for obtaining a reporting position by the UE, wherein the reporting position identifies the number of time slots before the end of the UE uplink transmission, and during the UE uplink transmission, the UE executes a unit for sending an uplink control message with COT sharing information to the serving base station, wherein the UE calculates the remaining COT duration and offset indication from the number of time slots before the end of the UE uplink transmission.

[0143] The forty-first aspect, based on the twenty-fourth aspect, also includes a unit for determining, by the UE, a time gap between the end of the UE uplink transmission and the start of the subsequent downlink transmission; a unit for terminating the UE uplink transmission at the end of the UE uplink transmission in response to the time gap exceeding the minimum time for the serving base station to perform the shortened downlink LBT according to the LBT capability; and a unit for terminating the UE uplink transmission in an end period before the end of the UE uplink transmission in response to the minimum time exceeding the time gap, wherein the extended time gap between the end periods before the end of the UE uplink transmission is sufficient to accommodate the minimum time for the serving base station to perform the shortened LBT.

[0144] In the 42nd aspect, based on the 41st aspect, it also includes a unit for determining the transmission block size for UE uplink transmission by the UE based on the end of UE uplink transmission using rate matching based on the end of UE uplink transmission; the end of UE uplink transmission using rate matching based on the end of the UE uplink transmission, wherein the UE truncates resources associated with the extended time gap; or using one of the end time periods before the end of UE uplink transmission using rate matching based on the end time period before the end of the UE uplink transmission.

[0145] According to the forty-third aspect, based on the forty-second aspect, wherein the unit for sending an uplink control message includes a unit for multiplexing an uplink control message according to a first number of multiplexed symbols that is less than the actual number of multiplexed symbols based on the end of the used UE uplink transmission; based on the actual number of multiplexed symbols based on the end of the used UE uplink transmission; or a second number of multiplexed symbols that is greater than the actual number of multiplexed symbols based on the end of the used UE uplink transmission.

[0146] In the forty-fourth aspect, based on the twenty-third aspect, it also includes a unit for the UE to obtain a transmission configuration set from the serving base station; a unit for the UE to select a transmission configuration from the transmission configuration set; and a unit for the UE to add a configuration indicator to the uplink control message, wherein the configuration indicator identifies the transmission configuration for the serving base station.

[0147] The forty-fifth aspect may include a non-transitory computer-readable medium having program code recorded thereon, wherein the program code may include: program code executable by a computer for causing the computer to acquire COT by a UE in response to detecting that the UE's LBT process is successful on a shared communication channel; program code executable by a computer for causing the computer to determine by a UE whether COT sharing is enabled or not enabled; program code executable by a computer for causing the computer to identify by a UE COT sharing information for sending to a serving base station in an uplink control message, wherein the COT sharing information is identified in response to the determination; and program code executable by a computer for causing the computer to send by a UE an uplink control message having COT sharing information to a serving base station.

[0148] Aspect 46, based on aspect 45, wherein the COT sharing information includes the remaining COT duration from the end of one of the UE uplink transmission during the COT or the PUSCH transmission containing the COT sharing information to the end of the COT; an offset indication identifying the end of the UE uplink transmission; and one or more of the CAPCs used by the UE to obtain the COT.

[0149] A forty-seventh aspect, based on aspect forty-sixth aspect, wherein the program code executable by the computer to enable the computer to make a determination includes a program code executable by the computer to enable the computer to identify the ED threshold configuration of the UE; a program code executable by the computer to enable the computer to determine that COT sharing is enabled in response to identifying the ED threshold configuration as configured for sharing; and a program code executable by the computer to enable the computer to determine that COT sharing is not enabled in response to identifying the ED threshold configuration as not configured for sharing.

[0150] A forty-eighth aspect, based on the forty-seventh aspect, wherein the program code executable by the computer for enabling the computer to identify COT sharing information includes one of the following items: a program code executable by the computer for enabling the computer to identify the remaining COT duration, offset indication and CAPC for an uplink control message when it is determined that COT sharing is enabled; or a program code executable by the computer for enabling the computer to identify an offset indication and one or more of the following items for an uplink control message when it is determined that COT sharing is not enabled: removal of CAPC; remaining COT duration; a 1-bit flag indicating whether the serving base station is allowed to transmit during the remaining part of the COT; or an indication of the number of symbols available for transmission by the serving base station.

[0151] A forty-ninth aspect, based on the forty-sixth aspect, wherein the program code executable by the computer to enable the computer to make a determination includes a program code executable by the computer to enable the computer to receive a configuration message from the serving base station, wherein the configuration message includes an identifier of the COT sharing information to be included in the uplink control message; and a program code executable by the computer to enable the computer to determine whether COT sharing is enabled or not enabled based on the identifier of the COT sharing information in the configuration message.

[0152] A fiftieth aspect, based on aspect 49, wherein the program code executable by the computer to enable the computer to determine whether COT sharing is enabled or not includes a program code executable by the computer to enable the computer to identify a configuration message indicating exclusion of CAPC and a remaining COT duration from an uplink control message, wherein the UE determines that COT sharing is not enabled in response to identifying the configuration message.

[0153] The fifty-first aspect, based on the fiftieth aspect, also includes program code executable by the computer to cause the computer to use an energy detection (ED) threshold configuration that is not configured for sharing for the LBT process in response to the UE identifying COT sharing as not enabled.

[0154] A fifty-second aspect, based on the forty-sixth aspect, wherein the program code executable by the computer to cause the computer to make a determination includes a program code executable by the computer to cause the computer to receive a configuration message from the serving base station, wherein the configuration message indicates whether the COT sharing is enabled or not enabled.

[0155] In the fifty-third aspect, based on the fifty-second aspect, it also includes a program code executable by the computer to cause the computer to use an energy detection (ED) threshold configuration that is not configured for sharing for the LBT process in response to the UE identifying COT sharing as not enabled.

[0156] Aspect 54, based on aspect 46, wherein the COT sharing information includes an index to a table shared by the UE and the serving base station, wherein the table includes multiple entries, each entry identifying one or more of the remaining COT duration, the offset indication indicated as the remaining transmission time, and the CAPC correspondence.

[0157] Aspect 55, based on aspect 54, wherein the table uses a resource indicator value (RIV) to compress the remaining COT duration and the remaining transmission time.

[0158] Aspect 56, based on aspect 55, wherein the RIV indicates one or more of the following: the remaining transmission time as the PUSCH time slot boundary at which the UE uplink transmission will end; and the remaining COT duration has the granularity of the starting position of the UE uplink transmission configured by the serving base station.

[0159] In the fifty-seventh aspect, based on the fifty-fourth aspect, the table uses a start and length indicator value (SLIV) to jointly encode the remaining COT duration and the offset indication.

[0160] Aspect 58, based on aspect 57, wherein the length value of the SLIV is indicated in the granularity of the PUSCH transmission starting point, wherein the PUSCH starting point is configured by the serving base station.

[0161] A fifty-ninth aspect, based on the fifty-seventh aspect, wherein the starting value of SLIV is indicated with one of the following granularities: time slot or PUSCH transmission end point, and the length value of SLIV is indicated with one of the following granularities: time slot or PUSCH transmission start point.

[0162] The sixtieth aspect, based on the fifty-seventh aspect, also includes a program code executable by the computer to cause the computer to add correction information to the uplink control message by the UE, wherein the correction information modifies one or more values ​​in the table indicated by the SLIV.

[0163] The sixty-first aspect, based on the forty-sixth aspect, also includes a program code executable by the computer to cause the computer to compress the remaining COT duration within an uplink control message, wherein the program code executable by the computer to cause the computer to compress the remaining COT duration includes a program code executable by the computer to cause the computer to indicate the number of remaining COT time slots and the end symbol in the last time slot of the number of remaining COT time slots by the UE; and a program code executable by the computer to cause the computer to compress the offset indication within the uplink control message, wherein the program code executable by the computer to cause the computer to compress the offset indication includes a program code executable by the computer to cause the computer to indicate the end slot number by the UE and the last symbol of the UE uplink transmission in the end slot number; or a program code executable by the computer to cause the computer to indicate one of the number of remaining transmission time slots by the UE.

[0164] In the sixty-second aspect, based on the forty-sixth aspect, it also includes a program code executable by the computer to enable the computer to obtain a reported position from the UE, wherein the reported position identifies the number of time slots before the end of the UE uplink transmission, and during the UE uplink transmission, the UE executes to send an uplink control message with COT sharing information to the serving base station, wherein the UE calculates the remaining COT duration and offset indication from the number of time slots before the end of the UE uplink transmission.

[0165] In the sixty-third aspect, based on the forty-sixth aspect, it also includes a program code executable by the computer to enable the computer to determine the time gap between the end of the UE uplink transmission and the start of the subsequent downlink transmission by the UE; the program code executable by the computer to enable the computer to respond by the UE that the time gap exceeds the minimum time for the serving base station to perform the shortened downlink LBT according to the LBT capability, and end the UE uplink transmission at the end of the UE uplink transmission; and the program code executable by the computer to enable the computer to respond by the UE that the minimum time exceeds the time gap, and end the UE uplink transmission in the end period before the end of the UE uplink transmission, wherein the extended time gap between the end periods before the end of the UE uplink transmission is sufficient to accommodate the minimum time for the serving base station to perform the shortened LBT.

[0166] The sixty-fourth aspect, based on the sixty-third aspect, also includes a program code executable by the computer to enable the computer to determine the transmission block size for UE uplink transmission by the UE based on the end of UE uplink transmission using rate matching based on the end of the UE uplink transmission; using the end of the UE uplink transmission using rate matching based on the end of the UE uplink transmission, wherein the UE truncates resources associated with the extended time gap; or using one of the end time periods before the end of the UE uplink transmission using rate matching based on the end time period before the end of the UE uplink transmission.

[0167] A sixty-fifth aspect is based on the sixty-fourth aspect, wherein the program code executable by the computer to cause the computer to send an uplink control message includes a program code executable by the computer to cause the computer to multiplex the uplink control message according to a first number of multiplexed symbols that is less than the actual number of multiplexed symbols based on the end of the used UE uplink transmission; a multiplexed symbol based on the actual number of multiplexed symbols based on the end of the used UE uplink transmission; or a second number of multiplexed symbols that is greater than the actual number of multiplexed symbols based on the end of the used UE uplink transmission.

[0168] In the sixty-sixth aspect, based on the forty-fifth aspect, it also includes a program code executable by the computer to enable the computer to obtain a transmission configuration set from the serving base station by the UE; a program code executable by the computer to enable the computer to select a transmission configuration from the transmission configuration set by the UE; and a program code executable by the computer to enable the computer to add a configuration indicator to the uplink control message by the UE, wherein the configuration indicator identifies the transmission configuration for the serving base station.

[0169] The sixty-seventh aspect configured for wireless communication may include at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor may be configured to acquire a COT by the UE in response to detecting that the UE's LBT process is successful on a shared communication channel; determine by the UE whether COT sharing is enabled or not enabled; identify by the UE COT sharing information for sending to a serving base station within an uplink control message, wherein the COT sharing information is identified in response to the determination; and send by the UE an uplink control message with the COT sharing information to the serving base station.

[0170] Aspect sixty-eight, based on aspect sixty-seven, wherein the COT sharing information includes the remaining COT duration from the end of one of the UE uplink transmission during the COT or the PUSCH transmission containing the COT sharing information to the end of the COT; an offset indication identifying the end of the UE uplink transmission; and one or more of the CAPCs used by the UE to obtain the COT.

[0171] A sixty-ninth aspect, based on aspect sixty-eight, wherein the configuration of the at least one processor for determining includes the configuration of the at least one processor for identifying an ED threshold configuration of the UE; in response to identifying the ED threshold configuration as configured for sharing, determining that COT sharing is enabled; and in response to identifying the ED threshold configuration as not configured for sharing, determining that COT sharing is not enabled.

[0172] In the seventieth aspect, based on the sixty-ninth aspect, the configuration of the at least one processor for identifying COT sharing information includes one of the following items: the configuration of the at least one processor is used to identify the remaining COT duration, offset indication and CAPC for the uplink control message when it is determined that COT sharing is enabled; or when it is determined that COT sharing is not enabled, identify the offset indication and one or more of the following items for the uplink control message: removal of CAPC; remaining COT duration; a 1-bit flag indicating whether the serving base station is allowed to transmit during the remaining part of the COT; or an indication of the number of symbols available for transmission by the serving base station.

[0173] The seventy-first aspect is based on the sixty-eighth aspect, wherein the configuration of the at least one processor for determining includes the configuration of the at least one processor for receiving a configuration message from the serving base station, wherein the configuration message includes an identifier of the COT sharing information to be included in the uplink control message; and determining whether COT sharing is enabled or not enabled based on the identifier of the COT sharing information in the configuration message.

[0174] Aspect seventy-second, based on aspect seventy-first, wherein the configuration of the at least one processor for determining whether COT sharing is enabled or not includes the configuration of the at least one processor for identifying a configuration message indicating exclusion of CAPC and a remaining COT duration from an uplink control message, wherein the UE determines that COT sharing is not enabled in response to identifying the configuration message.

[0175] In the seventy-third aspect, based on the seventy-second aspect, it also includes the configuration of the at least one processor, for the UE to use an energy detection (ED) threshold configuration that is not configured for sharing for the LBT process in response to identifying COT sharing as not enabled.

[0176] Aspect seventy-fourth, based on aspect sixty-eighth, wherein the configuration of the at least one processor for determining includes the configuration of the at least one processor for receiving a configuration message from the serving base station, wherein the configuration message indicates whether the COT sharing is enabled or not enabled.

[0177] In aspect seventy-fifth, based on aspect seventy-fourth, further includes configuration of the at least one processor for, in response to the UE identifying COT sharing as not enabled, using an energy detection (ED) threshold configuration that is not configured for sharing for the LBT process.

[0178] Aspect seventy-six, based on aspect sixty-eight, wherein the COT sharing information includes an index to a table shared by the UE and the serving base station, wherein the table includes multiple entries, each entry identifying one or more of the remaining COT duration, the offset indication indicated as the remaining transmission time, and the CAPC correspondence.

[0179] Aspect seventy-seven, based on aspect seventy-six, wherein the table uses a resource indicator value (RIV) to compress the remaining COT duration and the remaining transmission time.

[0180] Aspect seventy-eight, based on aspect seventy-seven, wherein the RIV indicates one or more of the following: the remaining transmission time as the PUSCH time slot boundary at which the UE uplink transmission ends; and the remaining COT duration has the granularity of the starting position of the UE uplink transmission configured by the serving base station.

[0181] Aspect seventy-ninth, based on aspect seventy-six, wherein the table uses a start and length indicator value (SLIV) to jointly encode the remaining COT duration and the offset indication.

[0182] In aspect 80, based on aspect 79, the length value of the SLIV is indicated in the granularity of the PUSCH transmission starting point, wherein the PUSCH starting point is configured by the serving base station.

[0183] The eighty-first aspect is based on the seventy-ninth aspect, wherein the starting value of the SLIV is indicated with one of the following granularities: a time slot or an end point of a PUSCH transmission, and the length value of the SLIV is indicated with one of the following granularities: a time slot or a start point of a PUSCH transmission.

[0184] In aspect 82, based on aspect 79, further includes the configuration of the at least one processor, for adding correction information to the uplink control message by the UE, wherein the correction information modifies one or more values ​​in the table indicated by SLIV.

[0185] In aspect 83, based on aspect 68, further includes the configuration of the at least one processor for compressing the remaining COT duration within an uplink control message, wherein the configuration of the at least one processor for compressing the remaining COT duration includes the configuration of the at least one processor for indicating by the UE the number of remaining COT time slots and the end symbol in the last time slot of the number of remaining COT time slots; and compressing the offset indication within the uplink control message, wherein the configuration of the at least one processor for compressing the offset indication includes the configuration of the at least one processor for indicating by the UE the end slot number and the last symbol of the UE uplink transmission in the end slot number; or indicating by the UE one of the number of remaining transmission time slots.

[0186] In aspect 84, based on aspect 68, further includes the configuration of the at least one processor for obtaining a reporting position by the UE, wherein the reporting position identifies the number of time slots before the end of the UE uplink transmission, and during the UE uplink transmission, the UE executes the configuration of the at least one processor for sending an uplink control message with COT sharing information to the serving base station, wherein the UE calculates the remaining COT duration and offset indication from the number of time slots before the end of the UE uplink transmission.

[0187] In aspect 85, based on aspect 68, it also includes the configuration of the at least one processor, used to determine, by the UE, a time gap between the end of the UE uplink transmission and the start of the subsequent downlink transmission; in response to the time gap exceeding the minimum time for the serving base station to perform the shortened downlink LBT according to the LBT capability, the UE uplink transmission is terminated at the end of the UE uplink transmission; and in response to the minimum time exceeding the time gap, the UE uplink transmission is terminated in the end period before the end of the UE uplink transmission, wherein the extended time gap between the end periods before the end of the UE uplink transmission is sufficient to accommodate the minimum time for the serving base station to perform the shortened LBT.

[0188] In aspect 86, based on aspect 85, further includes the configuration of the at least one processor, for determining, by the UE, a transmission block size for UE uplink transmission based on the end of UE uplink transmission using rate matching based on an end time period before the end of UE uplink transmission; using rate matching based on the end of UE uplink transmission, wherein the UE truncates resources associated with an extended time gap; or using one of the end time periods before the end of UE uplink transmission using rate matching based on an end time period before the end of UE uplink transmission.

[0189] Aspect 87, based on aspect 86, wherein the configuration of the at least one processor for sending an uplink control message includes the configuration of the at least one processor for multiplexing the uplink control message according to a first number of multiplexed symbols that is less than the actual number of multiplexed symbols based on the end of the used UE uplink transmission; based on the actual number of multiplexed symbols of the end of the used UE uplink transmission; or a second number of multiplexed symbols that is greater than the actual number of multiplexed symbols based on the end of the used UE uplink transmission.

[0190] In aspect 88, based on aspect 67, further includes the configuration of the at least one processor, used for the UE to obtain a transmission configuration set from the serving base station; the UE to select a transmission configuration from the transmission configuration set; and the UE to add a configuration indicator to the uplink control message, wherein the configuration indicator identifies the transmission configuration for the serving base station.

[0191] The various illustrative logical blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0192] The steps of the method or algorithm described in conjunction with the present disclosure can be implemented directly with hardware, with a software module executed by a processor, or with a combination of the two. The software module can reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or a storage medium of any other form known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium can be integrated into the processor. The processor and the storage medium can reside in an ASIC. The ASIC can reside in a user terminal. In an alternative, the processor and the storage medium can reside in a user terminal as discrete components.

[0193] In one or more exemplary designs, the functions described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions can be stored or sent as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, and communication media include any media that helps to send a computer program from one place to another. Computer-readable storage media can be any available media that can be accessed by a general or special-purpose computer. Exemplarily and not restrictively, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices or any other media that can be used to carry or store required program code modules in the form of instructions or data structures and can be accessed by a general or special-purpose computer or a general or special-purpose processor. In addition, any connection is appropriately referred to as a computer-readable medium. For example, if software is sent from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0194] As used herein, including in the claims, the term "and / or," when used in a list of two or more items, means that any one of the listed items may be used alone, or any combination of two or more of the listed items may be used. For example, if a composition is described as containing components A, B, and / or C, the composition may contain A alone; B alone; C alone; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Furthermore, as used herein, including in the claims, "or," as used in a list of items beginning with "at least one," indicates a disjunctive list, such that, for example, a list of "at least one of A, B, or C" means any one of A or B or C or AB or AC or BC or ABC (i.e., A and B and C) or any combination thereof.

[0195] The description herein is provided to enable those skilled in the art to practice or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of wireless communication, comprising: Acquiring, by a user equipment (UE), a channel occupation time (COT) in response to detecting a success of a listen before talk (LBT) procedure of the UE on a shared communication channel; determining, by the UE based on a configuration message received from a serving base station, whether COT sharing is one of enabled or not enabled; identifying, by the UE, COT sharing information for transmission within an uplink control message to a serving base station, wherein the COT sharing information is identified in response to the determining, wherein the COT sharing information when COT sharing is enabled is different from the COT sharing information when COT sharing is not enabled; and The uplink control message having the COT sharing information is sent by the UE to the serving base station.

2. The method according to claim 1, wherein: The COT shared information includes one or more of the following: a remaining COT duration from the end of one of a UE uplink transmission during the COT or a physical uplink shared channel (PUSCH) transmission containing the COT shared information to an end point of the COT; an offset indication identifying an end of uplink transmission of the UE; as well as A channel access priority class (CAPC) used by the UE to obtain the COT.

3. The method according to claim 2, wherein: The determination includes: identifying an energy detection (ED) threshold configuration of the UE; In response to identifying the ED threshold configuration as configured for sharing, determining to enable the COT sharing; and In response to identifying the ED threshold configuration as not configured for sharing, it is determined that the COT sharing is not enabled.

4. The method according to claim 3, wherein: Identifying the COT shared information includes one of the following: When it is determined that the COT sharing is enabled, identifying the remaining COT duration, the offset indication, and the CAPC for the uplink control message; or When it is determined that the COT sharing is not enabled, identifying, for the uplink control message, the offset indication and one or more of the following: removal of said CAPC; the remaining COT duration; A 1-bit flag indicating whether the serving base station is allowed to transmit during the remainder of the COT; or An indication of a number of symbols available for transmission by the serving base station.

5. The method according to claim 2, wherein: The determination includes: receiving a configuration message from the serving base station, wherein the configuration message includes an identification of the COT sharing information to be included in the uplink control message; and Whether the COT sharing is enabled or not enabled is determined based on an identification of the COT sharing information in the configuration message.

6. The method according to claim 5, wherein: The determining whether COT sharing is enabled or not enabled comprises: Recognizing that the configuration message indicates exclusion of the CAPC and the remaining COT duration from the uplink control message, wherein the UE determines that the COT sharing is not enabled in response to recognizing the configuration message.

7. The method according to claim 6, further comprising: In response to identifying the COT sharing as not enabled, using, by the UE, an energy detection (ED) threshold configuration for the LBT process that is not configured for sharing.

8. The method according to claim 2, wherein: The determination includes: A configuration message is received from the serving base station, wherein the configuration message indicates one of whether the COT sharing is enabled or not enabled.

9. The method according to claim 8, further comprising: In response to identifying the COT sharing as not enabled, using, by the UE, an energy detection (ED) threshold configuration for the LBT process that is not configured for sharing.

10. The method according to claim 2, wherein: The COT sharing information includes an index to a table shared by the UE and the serving base station, wherein the table includes a plurality of entries, each entry identifying one or more of the remaining COT duration, the offset indication indicated as the remaining transmission time, and a CAPC correspondence.

11. The method according to claim 10, wherein: The table uses a resource indicator value (RIV) to compress the remaining COT duration and the remaining transmission time.

12. The method according to claim 11, wherein: RIV indicates one or more of the following: The remaining transmission time serves as a physical uplink shared channel (PUSCH) slot boundary at which the UE uplink transmission will end; and The remaining COT duration has a granularity of a starting position of the UE uplink transmission configured by the serving base station.

13. The method according to claim 10, wherein: The table uses a start and length indicator value (SLIV) to jointly encode the remaining COT duration and the offset indication.

14. The method according to claim 13, wherein: The length value of the SLIV is indicated in the granularity of a physical uplink shared channel (PUSCH) transmission start point, where the PUSCH start point is configured by the serving base station.

15. The method according to claim 13, wherein: The starting value of the SLIV is indicated with a granularity of one of the following: a timeslot or a PUSCH transmission end point, And the length value of the SLIV is indicated with a granularity of one of the following: a time slot or a PUSCH transmission start point.

16. The method according to claim 13, further comprising: Correction information is added, by the UE, to the uplink control message, wherein the correction information modifies one or more values ​​in the table indicated by the SLIV.

17. The method according to claim 2, further comprising: compressing the remaining COT duration within the uplink control message, wherein the compressing the remaining COT duration comprises indicating by the UE a number of remaining COT time slots and an end symbol in a last time slot of the number of remaining COT time slots; and compressing the offset indication within the uplink control message, wherein the compressing the offset indication comprises one of the following: Indicating, by the UE, an end slot number and a last symbol of uplink transmission by the UE in the end slot number; or The number of remaining transmission time slots is indicated by the UE.

18. The method according to claim 2, further comprising: A reporting position is obtained by the UE, wherein the reporting position identifies the number of time slots before the end of the UE uplink transmission during which the UE performs sending the uplink control message with the COT sharing information to the serving base station, and wherein the remaining COT duration and the offset indication are calculated by the UE from the number of time slots before the end of the UE uplink transmission.

19. The method according to claim 2, further comprising: Determining, by the UE, a time gap between an end of an uplink transmission of the UE and a start of a subsequent downlink transmission; Ending, by the UE, uplink transmission at an end of the UE uplink transmission in response to the time gap exceeding a minimum time for the serving base station to perform shortened downlink LBT according to the LBT capability; as well as In response to the minimum time exceeding the time gap, the UE ends the UE uplink transmission in an end time period before the end of the UE uplink transmission, wherein the extended time gap between the end time periods before the end of the UE uplink transmission is sufficient to accommodate the minimum time for the serving base station to perform the shortened LBT.

20. The method according to claim 19, further comprising: Determining, by a UE, a transport block size for uplink transmission by the UE based on one of the following: an end of uplink transmission by the UE using rate matching based on the end time period before the end of uplink transmission by the UE; an end of uplink transmission of the UE utilizing the rate matching based on an end of uplink transmission of the UE, wherein the UE punctures resources associated with the extended time gap; or The end time period before the end of uplink transmission of the UE is utilized based on rate matching of the end time period before the end of uplink transmission of the UE.

21. The method according to claim 20, wherein: Sending the uplink control message includes: The uplink control message is multiplexed according to one of the following: a first number of multiplexed symbols that is less than an actual number of multiplexed symbols based on an end of uplink transmission of the UE used; The actual number of multiplexing symbols based on the end of the UE uplink transmission used; or A second number of multiplexed symbols is greater than an actual number of multiplexed symbols based on an end of UE uplink transmission used.

22. The method of claim 1, further comprising: The UE obtains a transmission configuration set from the serving base station; Selecting, by the UE, a transmission configuration from the transmission configuration set; as well as A configuration indicator is added by the UE to the uplink control message, wherein the configuration indicator identifies the transmission configuration for the serving base station.

23. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; as well as a memory coupled to the at least one processor, The at least one processor is configured to perform the following operations: Acquiring, by a user equipment (UE), a channel occupation time (COT) in response to detecting a success of a listen before talk (LBT) procedure of the UE on a shared communication channel; determining, by the UE based on a configuration message received from a serving base station, whether COT sharing is one of enabled or not enabled; identifying, by the UE, COT sharing information for transmission to a serving base station within an uplink control message, wherein the COT sharing information is identified in response to execution of the at least one processor to determine a configuration, wherein the COT sharing information when COT sharing is enabled is different from the COT sharing information when COT sharing is not enabled; and The uplink control message having the COT sharing information is sent by the UE to the serving base station.

24. The device according to claim 23, wherein: The COT shared information includes one or more of the following: a remaining COT duration from the end of one of a UE uplink transmission during the COT or a physical uplink shared channel (PUSCH) transmission containing the COT shared information to an end point of the COT; an offset indication identifying an end of uplink transmission of the UE; as well as A channel access priority class (CAPC) used by the UE to obtain the COT.

25. The device according to claim 24, wherein: The configuration of the at least one processor to determine includes configuration of the at least one processor to: identifying an energy detection (ED) threshold configuration of the UE; responsive to identifying the ED threshold configuration as configured for sharing, determining to enable the COT sharing; as well as In response to identifying the ED threshold configuration as not configured for sharing, it is determined that the COT sharing is not enabled.

26. The device according to claim 25, wherein The configuration of the at least one processor to identify the COT shared information includes configuration of the at least one processor to do one of: When it is determined that the COT sharing is enabled, identifying the remaining COT duration, the offset indication, and the CAPC for the uplink control message; or When it is determined that the COT sharing is not enabled, identifying, for the uplink control message, the offset indication and one or more of the following: removal of said CAPC; the remaining COT duration; A 1-bit flag indicating whether the serving base station is allowed to transmit during the remainder of the COT; or An indication of a number of symbols available for transmission by the serving base station.

27. The device according to claim 24, wherein: The configuration of the at least one processor to determine includes configuration of the at least one processor to: receiving a configuration message from the serving base station, wherein the configuration message includes an identification of the COT sharing information to be included in the uplink control message; and Whether the COT sharing is enabled or not enabled is determined based on an identification of the COT sharing information in the configuration message.

28. The device according to claim 27, wherein The configuration of the at least one processor to determine whether the COT sharing is one of enabled or not enabled comprises: The at least one processor is configured to: identify that the configuration message indicates exclusion of the CAPC and the remaining COT duration from the uplink control message, wherein the UE determines that COT sharing is not enabled in response to execution of the at least one processor being configured to identify the configuration message.

29. The apparatus of claim 28, further comprising configuration of the at least one processor for: in response to the UE identifying the COT sharing as not enabled, using an energy detection (ED) threshold configuration for the LBT process that is not configured for sharing.

30. The device according to claim 24, wherein: The configuration of the at least one processor to determine includes configuration of the at least one processor to receive a configuration message from the serving base station, wherein the configuration message indicates one of whether the COT sharing is enabled or not enabled.

31. The apparatus of claim 30, further comprising configuration of the at least one processor for: in response to the UE identifying the COT sharing as not enabled, using an energy detection (ED) threshold configuration for the LBT process that is not configured for sharing.

32. The apparatus of claim 24, wherein: The COT sharing information comprises an index to a table shared by the UE and the serving base station, wherein the table comprises a plurality of entries, each entry identifying one or more of: the remaining COT duration, the offset indication indicated as the remaining transmission time, and a CAPC correspondence.

33. The device according to claim 32, wherein: The table uses a resource indicator value (RIV) to compress the remaining COT duration and the remaining transmission time.

34. The device according to claim 33, wherein: RIV indicates one or more of the following: The remaining transmission time serves as a physical uplink shared channel (PUSCH) slot boundary at which the UE uplink transmission will end; and The remaining COT duration has a granularity of a starting position of the UE uplink transmission configured by the serving base station.

35. The device according to claim 32, wherein: The table uses a start and length indicator value (SLIV) to jointly encode the remaining COT duration and the offset indication.

36. The device according to claim 35, wherein The length value of the SLIV is indicated in the granularity of a physical uplink shared channel (PUSCH) transmission start point, where the PUSCH start point is configured by the serving base station.

37. The device according to claim 35, wherein: The starting value of the SLIV is indicated with a granularity of one of the following: a timeslot or a PUSCH transmission end point, And the length value of the SLIV is indicated with a granularity of one of the following: a time slot or a PUSCH transmission start point.

38. The apparatus of claim 35, further comprising configuration of the at least one processor to: add, by the UE, correction information to the uplink control message, wherein The correction information modifies one or more values ​​in the table indicated by the SLIV.

39. The apparatus of claim 24, wherein: Also included is a configuration of the at least one processor to: compressing the remaining COT duration within the uplink control message, wherein the configuration of the at least one processor to compress the remaining COT duration comprises configuration of the at least one processor to: indicate, by the UE, a number of remaining COT slots and an end symbol in a last slot of the number of remaining COT slots; and and compressing the offset indication within the uplink control message, wherein the configuration of the at least one processor to compress the offset indication comprises configuration of the at least one processor to: Indicating, by the UE, an end slot number and a last symbol of uplink transmission by the UE in the end slot number; or The number of remaining transmission time slots is indicated by the UE.

40. The apparatus of claim 24, further comprising configuration of the at least one processor to: The UE obtains a reported position, wherein: The reported location identifies the number of time slots before the end of the UE uplink transmission during which the UE executes the configuration of the at least one processor for sending the uplink control message with the COT sharing information to the serving base station, wherein the remaining COT duration and the offset indication are calculated by the UE from the number of time slots before the end of the UE uplink transmission.

41. The apparatus of claim 24, further comprising configuration of the at least one processor to: Determining, by the UE, a time gap between an end of an uplink transmission of the UE and a start of a subsequent downlink transmission; Ending, by the UE, uplink transmission at an end of the UE uplink transmission in response to the time gap exceeding a minimum time for the serving base station to perform shortened downlink LBT according to the LBT capability; as well as In response to the minimum time exceeding the time gap, the UE ends the UE uplink transmission in an end time period before the end of the UE uplink transmission, wherein the extended time gap between the end time periods before the end of the UE uplink transmission is sufficient to accommodate the minimum time for the serving base station to perform the shortened LBT.

42. The apparatus of claim 41 , further comprising configuration of the at least one processor to: for determining, by the UE, a transport block size for uplink transmission of the UE based on one of: an end of uplink transmission by the UE using rate matching based on the end time period before the end of uplink transmission by the UE; using the rate matching based on the end of the UE uplink transmission, wherein, The UE punctures resources associated with the extended time gap; or The end time period before the end of uplink transmission of the UE is utilized based on rate matching of the end time period before the end of uplink transmission of the UE.

43. The device according to claim 42, wherein: The configuration of the at least one processor to send the uplink control message comprises configuration of the at least one processor to: The uplink control message is multiplexed according to one of the following: a first number of multiplexed symbols that is less than an actual number of multiplexed symbols based on an end of uplink transmission of the UE used; The actual number of multiplexing symbols based on the end of the UE uplink transmission used; or A second number of multiplexed symbols is greater than an actual number of multiplexed symbols based on an end of UE uplink transmission used.

44. The apparatus of claim 23, further comprising configuration of the at least one processor to: The UE obtains a transmission configuration set from the serving base station; Selecting, by the UE, a transmission configuration from the transmission configuration set; and adding, by the UE, a configuration indicator to the uplink control message, wherein: The configuration indicator identifies the transmission configuration for the serving base station.

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