Dynamic indication of user equipment initiated channel occupancy time

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can receive, from a base station, information indicating one or more fixed frame period (FFP) configurations in a frame based equipment (FBE) mode. The UE can receive, from the base station, a downlink control information (DCI) scheduling an uplink transmission, where the DCI includes content that enables or disables UE-initiated channel occupancy time using the one or more FFP configurations. The UE can determine, based at least in part on the content in the DCI scheduling the uplink transmission, whether to initiate a channel occupancy time or to share a channel occupancy time initiated by the base station to perform the uplink transmission. Numerous other aspects are provided.

Description

[0001] Cross-references to related applications

[0002] This patent application claims priority to Patent Cooperation Treaty (PCT) application No. PCT / CN2020 / 125785, filed November 2, 2020, entitled “DYNAMIC INDICATION OF USEREQUIPMENT INITIATED CHANNEL OCCUPANCY TIME”, assigned to the assignee of this application. The disclosure of that earlier application is considered part of this patent application and is incorporated herein by reference. Technical Field

[0003] Various aspects of this disclosure generally relate to wireless communication, and to techniques and apparatus for dynamically indicating channel occupancy time initiated by user equipment. Background Technology

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

[0005] A wireless network may include several base stations (BSs) capable of supporting communication between several user equipments (UEs). UEs may communicate with the BS via downlinks and uplinks. A "downlink" (or "forward link") refers to the communication link from the BS to the UE, while an "uplink" (or "reverse link") refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a B-node, gNB, access point (AP), radio headend, transmit / receive point (TRP), new radio (NR) BS, 5G B-node, etc.

[0006] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different user equipment to communicate at the city, country, region, and even global levels. NR (also known as 5G) is an enhancement set of the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband Internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] In some aspects, a method for a UE to perform wireless communication includes: receiving from a base station information indicating one or more fixed frame period (FFP) configurations in a frame-based equipment (FBE) mode; receiving from the base station downlink control information (DCI) scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations; and determining, at least in part, based on the content scheduling the uplink transmissions in the DCI, whether to initiate channel occupancy time or to share channel occupancy time initiated by the base station to perform the uplink transmission.

[0008] In some aspects, a UE for wireless communication includes: a memory and one or more processors coupled to the memory, configured to: receive from a base station information indicating one or more FFP configurations in an FBE mode; receive from the base station a DCI for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations; and determine, at least in part, based on the content in the DCI for scheduling the uplink transmissions, whether to initiate channel occupancy time or to share channel occupancy time initiated by the base station to perform the uplink transmission.

[0009] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive from a base station information indicating one or more FFP configurations in an FBE mode; receive from the base station a DCI for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations; and determine, at least in part, based on the content in the DCI for scheduling the uplink transmissions, whether to initiate channel occupancy time or to share channel occupancy time initiated by the base station to perform the uplink transmission.

[0010] In some aspects, an apparatus for wireless communication includes: means for receiving from a base station information indicating one or more FFP configurations in an FBE mode; means for receiving from the base station a DCI for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by a UE using the one or more FFP configurations; and means for determining, at least in part, based on the content in the DCI for scheduling the uplink transmissions, whether to initiate channel occupancy time or to share channel occupancy time initiated by the base station to perform the uplink transmission.

[0011] In some aspects, a method for performing wireless communication by a base station includes: transmitting to a UE information indicating one or more FFP configurations in an FBE mode; and transmitting to the UE a DCI scheduling uplink transmission, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations.

[0012] In some aspects, a base station for wireless communication may include a memory; and one or more processors coupled to the memory, which are configured to: transmit to a UE information indicating one or more FFP configurations in an FBE mode; and transmit to the UE a DCI for scheduling uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by the UE using the one or more FFP configurations.

[0013] In some aspects, a non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a base station, cause the base station to: transmit to a UE information indicating one or more FFP configurations in an FBE mode; and transmit to the UE a DCI scheduling uplink transmission, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations.

[0014] In some aspects, an apparatus for wireless communication includes: means for transmitting to a UE information indicating one or more FFP configurations in an FBE mode; and means for transmitting to the UE a DCI for scheduling uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by the UE using the one or more FFP configurations.

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

[0016] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described thereafter. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for implementing the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and their associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not for defining limitations on the claims.

[0017] While aspects are described herein by way of example, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or package layouts. For example, some aspects may be implemented via integrated chip embodiments or other devices based on non-modular components (e.g., end-user equipment, vehicles, communication equipment, computing devices, industrial equipment, retail / shopping devices, medical devices, or AI-enabled devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. Devices incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include several components (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or summers) for analog and digital purposes. The aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, or end-user equipment of various sizes, shapes, and configurations. Attached Figure Description

[0018] To gain a more detailed understanding of the features described above in this disclosure, reference can be made to various aspects of the above brief overview, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. Identical reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 This is a diagram illustrating an example of a wireless network according to this disclosure.

[0020] Figure 2 This is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to this disclosure.

[0021] Figure 3 This is a diagram illustrating an example of an unlicensed radio frequency band according to this disclosure.

[0022] Figures 4A-4B This is a diagram illustrating an example of a fixed frame period during which one or more devices may transmit in an unlicensed channel, according to this disclosure.

[0023] Figures 5A-5E This is a diagram illustrating an example of how the channel occupancy time initiated by the UE is dynamically indicated according to this disclosure.

[0024] Figure 6-7 This is a diagram illustrating an example process associated with dynamically instructing a UE to initiate channel occupancy time, according to this disclosure.

[0025] Figure 8-9 This is a block diagram of an example device for wireless communication according to the present disclosure. Detailed Implementation

[0026] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be implemented in many different forms and should not be construed as being limited to any specific structure or function given throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or method of practice. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods practiced using additional structures, functionalities, or structures and functionalities that complement or supplement the various aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be implemented by one or more elements of the claims.

[0027] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and explained in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0028] It should be noted that although the aspects may be described herein using terms commonly associated with 5G or NR radio access technology (RAT), the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or RATs after 5G (e.g., 6G).

[0029] Figure 1 This is a diagram illustrating an example of a wireless network 100 according to this disclosure. The wireless network 100 may be a 5G (NR) network and / or an LTE network, etc., or may include its elements. The wireless network 100 may include several base stations 110 (shown as BS110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, B-node, gNB, 5G B-node (NB), access point, transmit / receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0030] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. Macrocells can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with a service subscription. Picocells can cover a relatively small geographic area and allow unrestricted access by UEs with a service subscription. Femtocells can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS used for macrocells may be referred to as a macro BS. A BS used for picocells may be referred to as a pico BS. A BS used for femtocells may be referred to as a femto BS or a home BS. Figure 1 In the example shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “B node,” “5G NB,” and “cell” are used interchangeably herein.

[0031] In some respects, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, BSs may interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0032] The wireless network 100 may also include a relay station. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., a BS or a UE) and transmitting those data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, relay, etc.

[0033] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs may have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0034] Network controller 130 can be coupled to a set of Base Stations (BSs) and can provide coordination and control over these BSs. Network controller 130 can communicate with each BS via backhaul. These BSs can also communicate with each other directly or indirectly via wireless or wired backhaul.

[0035] UE 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smartphone), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet, camera, gaming device, netbook, smartbook, ultrabook, medical device or equipment, biometric sensor / device, wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), entertainment device (e.g., music or video device, or satellite radio), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0036] Some UEs may be considered Machine-Type Communication (MTC) UEs, or evolved or enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, instruments, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes may provide connectivity to or to a network (e.g., a wide area network, such as the Internet or a cellular network) via wired or wireless communication links, for example. Some UEs may be considered Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered Customer Premises Equipment (CPE). UE 120 may be included within a housing that houses components of UE 120, such as processor components and / or memory components. In some aspects, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0037] Generally, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0038] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this scenario, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as performed by base station 110.

[0039] Devices of the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices of the wireless network 100 can communicate using an operating band with a first frequency range (FR1) and / or an operating band with a second frequency range (FR2), the first frequency range (FR1) spanning from 410 MHz to 7.125 GHz and the second frequency range (FR2) spanning from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency bands. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the "sub-6 GHz band." Similarly, although different from the extremely high frequency (EHF) band (30 GHz – 300 GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is often referred to as the "millimeter wave" band. Therefore, unless otherwise stated, it should be understood that, if used herein, the terms "sub-6 GHz" and the like can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise stated, it should be understood that, if used herein, the terms "millimeter wave" and the like can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., less than 24.25 GHz). It is conceivable that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0040] In some respects, devices of the wireless network 100 may communicate with each other using licensed and / or unlicensed RF bands. For example, base station 110 and UE 120 may communicate using RATs such as Licensed Assisted Access (LAA), Enhanced LAA (eLAA), Further Enhanced LAA (feLAA), and / or NR Unlicensed (NR-U). In some respects, WLAN access point 140 and WLAN station 150 may communicate with each other using only unlicensed RF bands (instead of licensed RF bands). Unlicensed RF bands can therefore be shared by base station 110, UE 120, WLAN access point 140, WLAN station 150, and / or other devices. Because unlicensed RF bands can be shared by devices operating under different protocols (e.g., different RATs), transmitting devices may need to contend for access to the unlicensed RF bands before transmitting via them.

[0041] For example, in a shared or unlicensed frequency band, a transmitting device may contend for channel access with other devices before transmitting on the shared or unlicensed channel to reduce and / or prevent collisions on that shared or unlicensed channel. To contend for channel access, the transmitting device may execute channel access procedures for shared or unlicensed frequency band channel access, such as a Listen-Before-Talk (LBT) procedure or another type of channel access procedure. The channel access procedure may be executed to determine whether a physical channel (e.g., the radio resources of that channel) is idle or busy (e.g., being used by another wireless communication device, such as another UE, IoT device, and / or WLAN device). The channel access procedure may include sensing or measuring the physical channel during a channel access gap (also known as a contention window) (e.g., performing a Reference Signal Received Power (RSRP) measurement, detecting an energy level, or performing another type of measurement), and determining whether the shared or unlicensed channel is idle or busy based at least in part on the signals sensed or measured on the physical channel (e.g., at least in part on whether the measurement meets a threshold). If the transmitting device determines that the channel access procedure is successful, the transmitting device may perform one or more transmissions on a shared or unlicensed channel during the Transmission Opportunity (TXOP), which may extend the Channel Occupancy Time (COT).

[0042] As indicated above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0043] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to this disclosure. The base station 110 may be equipped with... T One antenna 234a to 234t, while the UE 120 can be equipped with R Antennas 252a to 252r, of which generally T ≥ 1 and R ≥ 1.

[0044] At base station 110, transmit processor 220 can receive data destined for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from each UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols where applicable, and can... T One output symbol stream is provided to T modulators (MODs) 232a to 232t. Each modulator 232 can process its respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The signals from modulators 232a to 232t... T Each downlink signal can be transmitted via T Antennas 234a to 234t were used for transmission.

[0045] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM) to obtain the received symbol. MIMO detector 256 can obtain signals from all... RThe receiver processor 258 receives the received symbols from demodulators 254a to 254r, performs MIMO detection on these received symbols where applicable, and provides detected symbols. The receiver processor 258 can process (e.g., demodulate and decode) these detected symbols, providing decoded data for UE 120 to data sink 260, and providing decoded control and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, and / or CQI parameters, etc. In some aspects, one or more components of UE 120 may be included in housing 284.

[0046] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0047] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, antenna groups, antenna element assemblies, and / or antenna arrays. Antenna panels, antenna groups, antenna element assemblies, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element assemblies, and / or antenna arrays may include coplanar antenna element assemblies and / or non-coplanar antenna element assemblies. Antenna panels, antenna groups, antenna element assemblies, and / or antenna arrays may include antenna elements within a single housing and / or multiple antenna elements within housings. Antenna panels, antenna groups, antenna element assemblies, and / or antenna arrays may include elements coupled to one or more transmission and / or reception components (such as...). Figure 2 One or more antenna elements (one or more components).

[0048] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 may be pre-encoded by TX MIMO processor 266 where applicable, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 254) of UE 120 may be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receiver processors 258, transmitter processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as referenced). Figures 5A-5E and / or Figure 6-9 (as described).

[0049] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule downlink and / or uplink communications of UE 120. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes transceiver. The transceiver may include (such as) antenna 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, and / or any combination of TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as shown with reference to Figures 5A-5E and / or...). Figure 6-9 (as described).

[0050] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may perform one or more techniques associated with a dynamic indication of channel occupancy time initiated by the UE, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component that can execute or direct, for example Figure 6 The operation of process 600 and / or other processes as described herein. Memory 242 and 282 may store data and program code for use by base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120 (e.g., direct execution, or execution after compilation, transformation, and / or interpretation), the one or more processors, UE 120, and / or base station 110 may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 6 The process 600 and / or other processes as described herein. In some aspects, the execution instructions may include run instructions, translate instructions, compile instructions, and / or interpret instructions, etc.

[0051] In some aspects, UE 120 includes: means for receiving from base station 110 information indicating one or more fixed frame period (FFP) configurations in a frame-based equipment (FBE) mode; means for receiving from base station 110 downlink control information (DCI) for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations; and / or means for determining, at least in part, based on the content in the DCI for scheduling the uplink transmissions, whether to initiate channel occupancy time or to share channel occupancy time initiated by the base station to perform the uplink transmission. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0052] In some aspects, UE 120 includes: means for initiating a UE-initiated channel occupancy time to perform uplink transmission by at least partially based on content in the DCI and having a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations; and / or means for performing uplink transmission at the start time of the FFP by at least partially based on the initiated channel occupancy time.

[0053] In some aspects, UE 120 includes: means for determining that the one or more FFP configurations are associated with a plurality of FFPs having different start times; and / or means for selecting from the plurality of FFPs, at least in part, an FFP to initiate the channel occupancy time therein, based on the FFP having a start time that is aligned with the start symbol of the uplink transmission.

[0054] In some aspects, UE 120 includes: means for determining that the one or more FFP configurations are associated with a plurality of FFPs having the same start time; and / or means for selecting the FFP to initiate the channel occupancy time based at least in part on one or more bits in the DCI indicating the FFP among the plurality of FFPs to initiate the channel occupancy time therein.

[0055] In some aspects, UE 120 includes means for disabling UE-initiated channel occupancy time at least in part based on determining the content in the DCI or at least in part based on determining that the uplink transmission has a start symbol that is not aligned with the start time of at least one FFP associated with the one or more FFP configurations to suppress the initiation of channel occupancy time.

[0056] In some aspects, UE 120 includes: means for performing uplink transmission during the channel occupancy period initiated by base station 110, based at least in part on determining uplink transmission and enabling or disabling UE-initiated channel occupancy time DCI during the channel occupancy period initiated by base station 110.

[0057] In some aspects, UE 120 includes means for canceling uplink transmission at least in part based on determining that the uplink transmission or enabling or disabling the DCI initiated by the UE during the channel occupancy period is not during the channel occupancy period initiated by the base station 110.

[0058] In some aspects, base station 110 includes: means for transmitting to UE 120 information indicating one or more FFP configurations in an FBE mode; and / or means for transmitting to UE 120 a DCI for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by a UE using the one or more FFP configurations. Means for base station 110 to perform the operations described herein may include, for example, one or more of a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0059] although Figure 2 The boxes in the diagram are interpreted as different components, but the functions described above with respect to these boxes can be implemented using a single hardware component, software component, or combination of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by controller / processor 280 or under the control of controller / processor 280.

[0060] As indicated above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0061] Figure 3 This is a diagram illustrating example 300 of an unlicensed radio frequency band according to this disclosure.

[0062] To accommodate the ever-increasing traffic demands, various efforts have been made to improve spectrum efficiency in wireless networks, thereby increasing network capacity (e.g., through the use of higher-order modulation, advanced MIMO antenna technology, and / or multi-cell coordination techniques). Another potential way to increase network capacity is to expand system bandwidth. However, available spectrum in lower frequency bands that has traditionally been licensed or otherwise allocated to mobile network operators has become very scarce. Accordingly, various technologies have been developed to enable cellular radio access technologies (RATs) to operate in unlicensed or other shared spectrum. For example, licensed assisted access (LAA) uses carrier aggregation on the downlink to combine LTE in licensed bands with LTE in unlicensed bands (e.g., the 2.4 and / or 5 GHz bands already filled with wireless LAN (WLAN) or “Wi-Fi” devices). In other examples, enhanced LAA (eLAA) and further enhanced LAA (feLAA) technologies implement both uplink and downlink LTE operations in unlicensed spectrum, MulteFire is an LTE-based technology that operates in self-sufficient mode in both unlicensed and shared spectrum, NR-U implements NR operations in unlicensed spectrum, and so on.

[0063] For example, as in Figure 3 As shown by reference numeral 305, an unlicensed radio frequency (RF) band (such as a 6 GHz unlicensed RF band) can span a frequency range and can utilize frequency division duplex (FDD). In an FDD system, a first frequency band (e.g., a first sub-band of the unlicensed RF band) can be used for downlink communication (as shown by reference numeral 310), and a second frequency band (e.g., a second sub-band of the unlicensed RF band) can be used for uplink communication (as shown by reference numeral 315). "Downlink communication" can refer to communication from a control node to a downstream node (e.g., a node controlled, configured, and / or scheduled by the control node) (such as from base station 110 to UE 120 and / or from WLAN access point 140 to WLAN station 150, etc.). "Uplink communication" can refer to communication from a downstream node to a control node (such as from UE 120 to base station 110 and / or from WLAN station 150 to WLAN access point 140, etc.).

[0064] For example, further Figure 3As shown by reference numeral 320, the downlink bandwidth can be divided into multiple downlink channels (sometimes called downlink frequency channels). Similarly, as shown by reference numeral 325, the uplink bandwidth can be divided into multiple uplink channels (sometimes called uplink frequency channels). As shown by reference numeral 330, each downlink channel may correspond to a single uplink channel. This can be referred to as channel pairing, where a downlink channel is paired with an uplink channel. In this configuration, the control node and downstream nodes can use a specific downlink channel for downlink communication and can use a specific uplink channel paired with or corresponding to that specific downlink channel for uplink communication. In Example 300, downlink channel 1 is paired with uplink channel 1, downlink channel 2 is paired with uplink channel 2, downlink channel 3 is paired with uplink channel 3, and so on.

[0065] Although Figure 3 Example 300 illustrated in the text shows an unlicensed RF band utilizing FDD, but in some cases, unlicensed communication channels can utilize Time Division Duplex (TDD). For example, in an unlicensed communication channel utilizing TDD, uplink and downlink transmissions can be time-separated and performed on the same frequency channel. However, unlike TDD in licensed spectrum, subframes, time slots, symbols, and / or another transmission time interval are not limited to being configured for uplink or downlink communication, and can be configured for downlink transmissions performed by the base station or uplink transmissions performed by the UE. Furthermore, unlicensed communication can support dynamic TDD, where the uplink-downlink allocation can change over time to adapt to traffic conditions. For example, to implement dynamic TDD, a wireless device (e.g., a base station or UE) can determine when to transmit and in which resource to transmit based on an indication of the channel occupancy time structure. Generally, channel occupancy time can include multiple transmission time intervals (e.g., multiple time slots), and each transmission interval can include one or more downlink resources, one or more uplink resources, and / or one or more flexible resources. In this way, the channel occupancy time structure reduces power consumption and / or channel access delay.

[0066] In unlicensed RF bands (e.g., the 6 GHz unlicensed RF band), all or part of the band may be licensed to entities known as fixed service incumbents. Accordingly, when operating a cellular RAT (e.g., using LAA, eLAA, feLAA, MulteFire, and / or NR-U) in unlicensed spectrum, a challenge arises being the need to ensure fair coexistence with incumbent (e.g., WLAN) devices that can operate in that unlicensed spectrum. For example, regulations may specify that transmitting devices (e.g., base station 110 and / or UE 120) must perform a Listen-Before-Speak (LBT) procedure to contend for access to the unlicensed channel before gaining access to and / or transmitting through it. The LBT procedure may include a Clear Channel Assessment (CAA) procedure to determine whether the unlicensed channel is available (e.g., not occupied by other transmitting devices). Specifically, the device performing the CCA procedure may detect the energy level on the unlicensed channel and determine whether that energy level meets (e.g., is less than or equal to) a threshold (sometimes called a capability detection threshold). When the energy level meets (e.g., is below) a threshold, the LBT procedure is considered successful, and the transmitting device can gain access to the unlicensed channel for a duration known as the channel occupancy time. During the channel occupancy time, the transmitting device can perform one or more transmissions without having to perform any additional LBT operations. However, when the energy level fails to meet (e.g., is equal to or exceeds) the energy detection threshold, the LBT procedure fails, and the transmitting device's contention for access to the unlicensed channel is unsuccessful.

[0067] In cases where the LBT procedure fails due to the CCA procedure causing the unlicensed channel band to be determined to be unavailable (e.g., because the energy level detected on the unlicensed channel exceeds the energy detection threshold, indicating that another device is already using the channel), the CCA procedure can be re-executed later. In environments where the transmitting device may lack access to the unlicensed channel (e.g., due to WLAN activity or transmissions by other devices), an extended CCA (eCCA) procedure can be employed to increase the likelihood that the transmitting device will successfully gain access to the unlicensed channel. For example, the transmitting device executing the eCCA procedure can execute a random number of CCA procedures (from 1 to...) based on an eCCA counter. q When the transmitting device senses that the channel has become open and / or when the transmitting device senses that the channel has become open, the transmitting device may initiate a random waiting period based on the eCCA counter, and if the channel remains open during the random waiting period, transmission shall begin.

[0068] As indicated above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0069] Figures 4A-4B This is a diagram illustrating an example 400 of a fixed frame period during which one or more devices may transmit in an unlicensed channel, according to the present disclosure.

[0070] In wireless networks supporting communication in unlicensed spectrum, the LBT procedure can be executed in either Load-Based Equipment (LBE) mode or Frame-Based Equipment (FBE) mode. In LBE mode, the transmitting device can perform channel sensing associated with the LBT procedure at any time and use random backoff if the unlicensed channel is found to be busy. In FBE mode, the base station can perform channel sensing associated with the LBT procedure at fixed times and, if the unlicensed channel is found to be busy, the base station can wait until a fixed time period has elapsed before sensing the unlicensed channel again. Specifically, the fixed time for the base station to perform channel sensing can be defined according to a fixed frame period (FFP).

[0071] For example, Figure 4A An example FFP 410 base station is depicted that can be used for communication in unlicensed spectrum. For example... Figure 4A As shown, FFP 410 may include Channel Occupancy Time (COT) 412 during which the base station can transmit one or more downlink communications. In some cases, see the following references. Figure 4B As described, the base station can share channel occupancy time 412 with the UE so that the UE can transmit one or more uplink communications during the channel occupancy time 412 initiated by the base station. For example... Figure 4A As shown, FFP 410 may further include an idle period 414 (sometimes referred to as a gap period) at the end of FFP 410 following the channel occupancy time 412. The idle period 414 of FFP 410 provides time for executing the LBT procedure before the next FFP 410. FFP 410, including the channel occupancy time 412 and the idle period 414, may have a duration of 1 millisecond (ms), 2.5 ms, 4 ms, 5 ms, or 10 ms. Within every two radio frames (e.g., even-numbered radio frames), the starting position of FFP 410 may be determined by… i*P Given, among which i = {0, 1, ..., 20 / P -1} and P This is the duration of FFP 410 (in milliseconds). For a given subcarrier spacing (SCS), the idle period 414 is the maximum limit of the minimum idle period allowed by regulations divided by... Ts The minimum duration of idle period 414 is the maximum of 100 microseconds (µs) and 5% of the duration of FFP 410, and TsThis refers to the symbol duration for a given SCS. Accordingly, the idle period 414 may occupy no less than 5% of the duration of FFP 410, and the channel occupancy time 412 may occupy no more than 95% of the duration of FFP 410.

[0072] In FBE mode, the FFP configuration can be indicated in a system information block (e.g., SIB-1) or signaled to the UE in UE-specific Radio Resource Control (RRC) signaling (e.g., for FBE subcell use cases). If the network indicates that the FBE mode will be used for downlink and / or uplink accreditation by indicating a Category 2 LBT (25 µs) (e.g., an LBT without random backoff) or a Category 4 LBT (e.g., an LBT with random backoff and a variable-size contention window), the UE can perform channel sensing measurements in a 9 µs slot (e.g., a one-time LBT) within the 25 µs interval. If the UE detects one or more downlink signals or downlink channels (e.g., Physical Downlink Control Channel (PDCCH), Synchronization Signal Block (SSB), Physical Broadcast Channel (PBCH), Residual Minimum System Information (RMSI), Group Shared PDCCH (GC-PDCCH), etc.) from the base station within FFP 410, UE transmission within FFP 410 can occur. The same 2-bit field can be used in both LBE and FBE modes to indicate LBT type, cyclic prefix extension, channel access priority class (CAPC) indication, etc.

[0073] In the NR-U FBE mode of version 16 NR unlicensed (NR-U), only the base station can act as the initiating device to capture channel occupancy time, and the UE can act only as the responding device (e.g., sharing the channel occupancy time captured by the base station). The channel access rules in NR-U FBE mode are thus as follows: If the base station will initiate channel occupancy time 412, the Category 1 (Cat-1) LBT procedure may not apply, and the base station may execute the Category 2 (Cat-2) LBT procedure during the idle period 414 exactly before FFP 410. If the base station will transmit a downlink burst during the channel occupancy time 412 captured by the base station, the base station may execute the Cat-1 LBT procedure (e.g., no LBT) if the interval with the previous downlink burst or the previous uplink burst is within 16 µs, or execute the Cat-2 LBT procedure if the interval exceeds 16 µs. If the UE will transmit an uplink burst during the channel occupancy time 412 captured by the base station, the UE may execute a Cat-1 LBT procedure if the interval with the previous downlink or uplink burst is within 16 µs, or a Cat-2 LBT procedure if the interval is greater than 16 µs. It is worth noting that the Cat-2 LBT procedure for FBE mode may differ from the Cat-2 LBT procedure (25 µs or 16 µs) in LBE mode. In some aspects, a 9 µs measurement immediately preceding the transmission may be required, with at least 4 µs used for the measurement. As indicated by reference numeral 416, the 9 µs measurement required to initiate the channel occupancy time 412 in the next FFP 410 may be referred to as a one-time LBT. However, neither the Cat-1 LBT procedure nor the Cat-2 LBT procedure is applicable to situations where the UE will initiate a channel occupancy time in FBE mode, because the UE cannot initiate a channel occupancy time in version 16 NR-U FBE mode.

[0074] Accordingly, while wireless networks can be configured to use unlicensed spectrum to achieve faster data rates, provide a more responsive user experience, offload traffic from licensed spectrum, etc., a limitation of FBE mode is that the UE cannot initiate channel occupancy time to perform uplink transmissions. Accordingly, to improve access, efficiency, and / or latency of unlicensed channels, wireless networks may allow the base station and UE to share channel occupancy time. For example, as in Figure 4BAs shown by reference numeral 420 in the accompanying drawings, the base station may transmit a COT indicator (e.g., using Group Shared Downlink Control Information (DCI)) to one or more UEs in the event that the base station has successfully contested access to an unlicensed channel (e.g., via an LBT procedure that performs a pass), and the COT indicator from the base station may indicate that the one or more UEs do not need to initiate FFP. Instead, the one or more UEs may share the channel occupancy time captured by the base station and transmit one or more uplink communications during the shared channel occupancy time.

[0075] In a fully controlled environment, it may be sufficient to only allow the base station to contend for access to unlicensed channels and share channel occupancy time initiated by the base station with one or more UEs. For example, a “fully controlled” environment could refer to an environment that is restricted or otherwise controlled so that no other RAT or operator is operating in the coverage area. Subsequently, in a fully controlled environment, LBT procedures can always pass, even in FBE mode. However, in practice, a fully controlled environment may be difficult to achieve because even in scenarios assuming the environment is cleaned up, there may still be some other RAT running. For example, an employee working on a cleaned factory floor might carry a WLAN station transmitting WLAN access probes, even if no WLAN access points are deployed in the environment. Correspondingly, in a nearly fully controlled environment, the LBT procedures executed by the base station have a small chance of failure, which can lead to unacceptable performance for services with stringent quality of service requirements, such as Ultra-Reliable Low Latency Communication (URLLC), Industrial Internet of Things (IIoT) applications, etc. For example, even with an LBT failure rate as low as 10%, -3 In the case of URLLC packets scheduled for delivery in FFP, there are also 10 -3 The probability cannot be delivered because the base station and any UEs communicating with it must abandon the entire FFP due to the failure of the LBT procedure executed by the base station at the start of the FFP. 10 -3 The failure probability may not be sufficient to meet the reliability requirements of URLLC (which typically require 10). -6 (or better reliability). Furthermore, these problems are exacerbated in uncontrolled environments where many existing and / or competing devices may contend for access to unlicensed channels.

[0076] Accordingly, in cases where only the base station can contend for access to the unlicensed channel in FBE mode, if the LBT procedure executed by the base station fails and / or the base station does not execute the LBT procedure because it does not have downlink data to transmit, the UE may be unable to transmit on the uplink. Subsequently, in cases where the base station causes the LBT procedure to fail or the UE does not detect the COT indicator from the base station for other reasons (e.g., because the base station does not execute the LBT procedure due to a lack of downlink activity, impairment of downlink detection in the radio channel, etc.), the UE may be permitted to act as the initiating device to execute the LBT procedure and capture channel occupancy time in FBE mode. For example, as shown by reference numeral 422, in cases where the UE does not detect the COT indicator from the base station, the UE may execute the LBT procedure to initiate FFP and initiate a COT in which one or more uplink communications will be transmitted. Accordingly, as further illustrated by reference numeral 424, if the LBT procedure is passed, the UE may transmit one or more uplink communications on an unlicensed channel; and the detection of uplink transmissions from the UE may indicate that the base station may share the channel occupancy time captured by the UE to perform downlink transmissions.

[0077] In some respects, allowing the UE to initiate channel occupancy time in FBE mode can improve access to unlicensed channels, reduce uplink latency, save power, reduce interference, and so on. For example, when the UE initiates channel occupancy time, it can use that time to transmit the Physical Random Access Channel (PRACH) for initial network access. Specifically, during initial network access, the UE may not yet have a System Information Radio Network Temporary Identifier (SI-RNTI) or another known RNTI configured for monitoring downlink transmissions (e.g., a DCI scrambled with SI-RNTI or other known RNTI) to determine whether the base station has captured the channel occupancy time. This may limit the UE's ability to transmit the PRACH for network access, thus enabling the UE to initiate channel occupancy time before the UE is configured to monitor downlink transmissions from the base station to achieve uplink PRACH transmission.

[0078] Furthermore, allowing the UE to initiate channel occupancy time enables the UE to transmit the Physical Uplink Control Channel (PUCCH) and / or Physical Uplink Shared Channel (PUSCH) earlier in the FFP associated with the base station. For example, when sharing channel occupancy time captured by the base station, the UE must confirm that the base station has captured the channel occupancy time by detecting downlink activity in the earlier portion of the FFP to enable transmission in the later portion of the FFP (e.g., the UE needs to reserve time in the earlier portion of the base station's FFP to allow time for downlink transmission from the base station and / or time for the UE to process downlink transmissions). Additionally, allowing the UE to initiate channel occupancy time can save power at the base station and / or reduce interference on unlicensed channels. For example, to share channel occupancy time and achieve uplink transmission within the shared channel occupancy time, the base station needs to actively transmit one or more downlink communications in the earlier portion of the FFP, even if the base station does not need to transmit those downlink communications(s). This can lead to power consumption at the base station and additional interference on unlicensed channels, which can be avoided by allowing the UE to initiate channel occupancy time. Furthermore, allowing the UE to initiate channel occupancy time instead of relying on shared channel occupancy time captured by the base station avoids problems that would otherwise arise when downlink signal detection has reliability limitations. However, existing wireless networks lack a mechanism to dynamically indicate whether a UE is permitted to initiate channel occupancy time to perform uplink transmissions.

[0079] Some aspects described herein relate to techniques and apparatus for dynamic indication of whether a UE-initiated channel occupancy time is enabled or disabled. For example, in some aspects, a base station may (e.g., semi-statically using RRC signaling) configure one or more FFPs for the UE and may include one or more indicator bits in the DCI to indicate whether a UE-initiated channel occupancy time is enabled or disabled. In some aspects, the one or more indicator bits may be a new or dedicated DCI field indicating whether a UE-initiated channel occupancy time is enabled or disabled, or one or more existing DCI fields may be used to indicate whether a UE-initiated channel occupancy time is enabled or disabled. For example, an LBT type field in a backoff DCI and / or non-backoff DCI may be used, where the LBT type may be Cat-1 LBT (no LBT) to indicate that a UE-initiated channel occupancy time is disabled, or Cat-2 LBT (no random backoff LBT) to indicate that a UE-initiated channel occupancy time is enabled. In this manner, the UE can initiate channel occupancy time and, at least in part, perform uplink transmissions using the UE-initiated channel occupancy time based on the DCI that enables UE-initiated channel occupancy time (e.g., PUCCH and / or PUSCH associated with configured grant and / or dynamic uplink grant). Alternatively, the UE can suppress the initiation of channel occupancy time based at least in part on the DCI that disables UE-initiated channel occupancy time, and can instead cancel uplink transmissions or perform uplink transmissions using channel occupancy time shared by the base station.

[0080] As indicated above, Figures 4A-4B This is provided as an example. Other examples may differ from the one provided. Figures 4A-4B The example described.

[0081] Figures 5A-5E This is a diagram illustrating Example 500, which relates to dynamically indicating channel occupancy time initiated by the UE according to this disclosure. For example... Figure 5A As shown, Example 500 includes a base station communicating with a UE in a wireless network. As described herein, the base station and the UE can use one or more unlicensed channels in FBE mode to communicate on the uplink and downlink.

[0082] As in Figure 5AAs shown by reference numeral 510 in the accompanying drawings, the base station can transmit, and the UE can receive, information indicating one or more FFP configurations for the UE in FBE mode. For example, in some aspects, the one or more FFP configurations may each include a start time corresponding to the start time of a channel occupancy period initiated by the UE. Furthermore, in some aspects, each FFP configuration includes an idle period of not less than 5% of the FFP duration. In some aspects, the one or more FFP configurations may be configured in a semi-static channel access mode (e.g., FBE mode), wherein the parameters for the one or more FFPs can be semi-statically indicated to the UE using dedicated RRC signaling. Additionally or alternatively, the base station may indicate the one or more FFP configurations to the UE in a system information block (e.g., SIB-1). In some aspects, the one or more FFP configurations may be explicitly indicated, or the one or more FFP configurations may be implicitly indicated, at least in part, based on one or more higher-layer parameters.

[0083] Accordingly, as described herein, the base station can typically control the structures (e.g., FFP parameters) associated with one or more FFP configurations that support UE-initiated channel occupancy times. These FFP configurations may change infrequently (e.g., regulations may specify that FFP configurations cannot be changed within 200 ms or another suitable time period). Furthermore, as described herein, the base station can configure dynamic indicators to indicate whether the UE is permitted to initiate channel occupancy times for transmitting uplink channels or uplink signals using one or more FFP configurations.

[0084] For example, as in Figure 5A As further illustrated by reference numeral 512, the base station can transmit and the UE can receive a DCI that schedules uplink transmissions and includes content that enables or disables UE-initiated channel occupancy times using one or more FFP configurations. For example, in some aspects, enabling or disabling UE-initiated channel occupancy times may include one or more indicator bits provided in new or dedicated fields of the fallback or non-fallback DCI. Additionally or alternatively, one or more existing content fields and / or combinations of content fields in the fallback or non-fallback DCI may be used to indicate whether UE-initiated channel occupancy times are enabled or disabled.

[0085] For example, in a semi-static channel access mode in unlicensed spectrum, the backoff DCI for uplink and / or downlink grant may include a two-bit field for signaling the LBT type and cyclic prefix extension, and the UE may implicitly determine that the base station uses a specific CAPC (e.g., 4) to capture channel occupancy time shared with the UE, or may choose the CAPC used for UE-initiated channel occupancy time (e.g., using a mapping between priority class and traffic class). Additionally or alternatively, the non-backoff DCI for uplink grant may include up to six (6) bits for joint encoding of the LBT type, cyclic prefix extension, and CAPC value. Accordingly, in some aspects, the content in the scheduling DCI indicating whether the UE should perform uplink transmission by initiating channel occupancy time or by sharing channel occupancy time initiated by the base station may correspond to one or more bits in the backoff or non-backoff DCI used to indicate the LBT type. For example, the scheduling DCI can instruct Category 1 (Cat-1) LBT (which means no LBT) to disable UE-initiated channel occupancy time, and can instruct Category 2 (Cat-2) LBT or LBT without random backoff to enable UE-initiated channel occupancy time.

[0086] In some respects, when the UE is in RRC connected mode, the DCI can enable or disable UE-initiated channel occupancy time relative to any scheduled or configured uplink channel and / or uplink signal. For example, the DCI can enable or disable UE-initiated channel occupancy time for the Probe Reference Signal (SRS), PUCCH, PUSCH associated with configured permission (CG-PUSCH), and / or PUSCH associated with dynamic permission (DG-PUSCH). In some respects, where the DCI dynamically indicates whether UE-initiated channel occupancy time is enabled or disabled for DG-PUSCH, dynamic uplink permission can be included in the DCI that enables or disables UE-initiated channel occupancy time, or included in a separate DCI.

[0087] As in Figure 5AFurthermore, as shown by reference numeral 514, at least in part based on the content of the DCI scheduling an upcoming uplink transmission (e.g., SRS transmission, PUCCH transmission, CG-PUSCH transmission, and / or DG-PUSCH transmission), the UE can determine, when performing the upcoming uplink transmission, whether to initiate a channel occupancy time or share a channel occupancy time initiated by the base station. For example, as further described in detail herein, if the DCI content enables UE-initiated channel occupancy time and the uplink transmission has a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations, the UE can initiate a channel occupancy time and perform the uplink transmission using the UE-initiated channel occupancy time. Otherwise, if the DCI content disables UE-initiated channel occupancy time and / or the uplink transmission has a start symbol not aligned with the start time of the FFP associated with the one or more FFP configurations, the UE can suppress the initiation of a channel occupancy time. In such cases, the UE may use the channel occupancy time initiated by the base station or otherwise captured to perform uplink transmission, or the UE may cancel uplink transmission if it does not detect the channel occupancy time captured by the base station (e.g., when the DCI for uplink transmission and disabling the channel occupancy time initiated by the UE are not within the same base station channel occupancy time).

[0088] For example, refer to Figure 5BThe base station can configure the UE to have a single FFP configuration and dynamically indicate whether UE-initiated channel occupancy time is enabled or disabled for uplink transmissions. As described above, the DCI content may include one or more new indicator bits or dedicated indicator bits to indicate whether UE-initiated channel occupancy time is enabled or disabled, or may be included in the DCI(t) for downlink and / or uplink grants for one or more existing content fields that can be used to indicate whether UE-initiated channel occupancy time is enabled or disabled for uplink transmissions. For example, in some aspects, one or more indicator bits may indicate a first LBT type (e.g., Cat-1 LBT, or no LBT) to disable UE-initiated channel occupancy time, or may indicate a second LBT type (e.g., Cat-2 LBT, or LBT without random backoff) to enable UE-initiated channel occupancy time. Accordingly, as indicated by reference numeral 520, in cases where the DCI enables UE-initiated channel occupancy (e.g., indicating Cat-2 LBT) and the uplink transmission has a start symbol aligned with the start time of the configured FFP, the UE may initiate channel occupancy and perform uplink transmission using the UE-initiated channel occupancy. Otherwise, in cases where the DCI disables UE-initiated channel occupancy (e.g., indicating Cat-1 LBT) and / or the start symbol of the uplink transmission is not aligned with the start time of the configured FFP, the UE may suppress the initiation of channel occupancy. In such cases, the UE may perform uplink transmission using a channel occupancy initiated by the base station and shared with the UE (e.g., when both the uplink transmission and the DCI disabling UE-initiated channel occupancy are within the same base station channel occupancy period). Alternatively, if no base station channel occupancy is detected, the UE may cancel the uplink transmission.

[0089] In some respects, refer to Figure 5C The base station can configure the UE to have multiple FFP configurations, which have the same start time and dynamically indicate whether the channel occupancy time initiated by the UE is enabled or disabled for uplink transmissions. In this scenario, the UE can be configured with... N One FFP configuration, and DCI can include n The bits indicate which FFP configuration the UE will use to initiate channel occupancy time (if enabled), where N It is an integer with a value greater than one (1) and n=ceil (log 2 N)For example, the DCI may include: one (1) bit to indicate which FFP configuration the UE will use to initiate a channel occupancy time (when the UE is configured with up to two (2) FFP configurations); two (2) bits (when the UE is configured with three (3) or four (4) FFP configurations); and / or three (3) bits (when the UE is configured with five (5) to eight (8) FFP configurations); and so on. In this case, as indicated by reference numeral 530, when the one or more indicator bits in the DCI enable the UE-initiated channel occupancy time and the uplink transmission has a start symbol aligned with the start time of multiple FFP configurations having the same start time, the UE may initiate a channel occupancy time and perform uplink transmission using the UE-initiated channel occupancy time. In this case, as Figure 5C As further shown, DCI can indicate the FFP configuration to be used. For example, in Figure 5C In this configuration, the UE has two (2) FFP configurations, and the DCI includes a 1-bit value (0 or 1) to indicate which FFP configuration to use. Otherwise, the UE may suppress the initiation of channel occupancy time in cases where the DCI disables UE-initiated channel occupancy time (e.g., indicating Cat-1 LBT) and / or the start symbol of uplink transmission is not aligned with the start time of the multiple FFPs. In such cases, the UE may use a channel occupancy time initiated by the base station and shared with the UE to perform uplink transmission (e.g., when both the uplink transmission and the DCI disabling UE-initiated channel occupancy time are within the same base station channel occupancy time), or cancel uplink transmission if no base station channel occupancy time is detected.

[0090] In some respects, refer to Figure 5D The base station can configure the UE to have multiple FFP configurations, each with a different start time and dynamically indicating whether UE-initiated channel occupancy time is enabled or disabled for uplink transmissions. In this scenario, as shown by reference numeral 540, when one or more indicator bits in the DCI enable UE-initiated channel occupancy time and the uplink transmission has a start symbol aligned with the start time of at least one of the multiple FFP configurations, the UE can initiate channel occupancy time and perform uplink transmissions using the UE-initiated channel occupancy time. For example, as... Figure 5DAs shown, the UE is configured with a first FFP (shown as FFP0) having a start time aligned with the start symbol of uplink transmission and a second FFP (shown as FFP1) having a start time not aligned with the start symbol of uplink transmission. Accordingly, when the DCI enables UE-initiated channel occupancy time (e.g., indicating Cat-2 LBT), the UE can select from multiple FFP configurations an FFP with a start time aligned with the start symbol of uplink transmission, and can choose from the selected FFP (e.g., ...). Figure 5D The example shown is an FFP0 that initiates channel occupancy time. In such cases, the UE can initiate channel occupancy time within the channel occupancy time captured by the base station and can forgo using the one-time LBT to share the base station's channel occupancy time.

[0091] Alternatively, in some cases, the start symbol of the uplink transmission may not be aligned with any FFP configured for the UE, or the DCI may (e.g., by indicating a Cat-1 LBT) indicate that the channel occupancy time initiated by the UE is disabled. In such cases, the UE can suppress the initiation of channel occupancy time but may still be able to perform uplink transmissions using the channel occupancy time captured by the base station. For example, as shown by reference numeral 542, in cases where the uplink transmission and the DCI indicating whether the channel occupancy time initiated by the UE is enabled or disabled are within the same base station channel occupancy time, the UE can use the channel occupancy time captured by the base station to perform uplink transmissions. In this case, where the DCI indicates that the channel occupancy time initiated by the UE is disabled and / or the start symbol of the uplink transmission is not aligned with any FFP configured for the UE, the UE can perform uplink transmissions within the base station channel occupancy time and follow the idle period of the base station channel occupancy time. In this case, the UE can suppress the initiation of channel occupancy time and / or utilize a one-time LBT to share the channel occupancy time with the base station. Accordingly, in the case where the UE performs uplink transmission during the base station channel occupancy time, the uplink transmission must be within 16 µs of the previous transmission (e.g., for Cat-1 LBT).

[0092] In some respects, refer to Figure 5EThe base station can configure the UE to have multiple FFP configurations with different start times and dynamically indicate whether the UE-initiated channel occupancy time is enabled or disabled for uplink transmissions. As shown by reference numeral 550, when one or more indicator bits in the DCI enable the UE-initiated channel occupancy time and the uplink transmission has a start symbol aligned with the start time of at least one of the multiple FFP configurations, the UE can initiate a channel occupancy time and perform uplink transmissions using the UE-initiated channel occupancy time. Accordingly, when the UE is configured with multiple FFP configurations with different start times, the UE can initiate a channel occupancy time only when the DCI enables the UE-initiated channel occupancy time (e.g., indicating Cat-2 LBT) and the uplink transmission has a start symbol aligned with the FFP start point. In such a case, the UE can perform uplink transmissions using the UE-initiated channel occupancy time and can relinquish sharing the next base station channel occupancy time if a base station channel occupancy time is subsequently detected.

[0093] Alternatively, in some cases, the start symbol of the uplink transmission may not be aligned with any FFP configured for the UE, or the DCI may (e.g., by indicating a Cat-1 LBT) indicate that UE-initiated channel occupancy time is disabled. In such cases, the UE may suppress the initiation of channel occupancy time. Furthermore, in Figure 5E In the example shown, the uplink transmission and the DCI indicating whether the channel occupancy time initiated by the UE is enabled or disabled are not within the same base station channel occupancy time. In such cases, as indicated by reference numeral 552, the UE may be unable to perform uplink transmission during the base station channel occupancy time and may cancel the uplink transmission.

[0094] As indicated above, Figures 5A-5E This is provided as an example. Other examples may differ from the one provided. Figures 5A-5E The example described.

[0095] Figure 6 This is a diagram illustrating an example procedure 600 performed by a UE according to this disclosure. Example procedure 600 is an example in which a UE (e.g., UE 120) performs an operation associated with a dynamic indication of channel occupancy time initiated by the UE.

[0096] like Figure 6 As shown, in some aspects, process 600 may include receiving information from a base station indicating one or more FFP configurations in an FBE mode (block 610). For example, the UE (e.g., using...) Figure 8 The receiving component 802 described herein can receive information from the base station indicating one or more FFP configurations in the FBE mode, as described above.

[0097] like Figure 6 As further shown, in some aspects, process 600 may include receiving a DCI from a base station to schedule uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by a UE using one or more FFP configurations (box 620). For example, a UE (e.g., using...) Figure 8 The receiving component 802 described herein can receive a DCI for scheduling uplink transmissions from a base station, wherein the DCI includes content that enables or disables channel occupancy time initiated by a UE using one or more FFP configurations, as described above.

[0098] like Figure 6 As further shown, in some aspects, process 600 may include determining, at least in part, whether to initiate a channel occupancy time or to share a channel occupancy time initiated by the base station to perform the uplink transmission based on the content of the uplink transmission scheduled in the DCI (box 630). For example, the UE (e.g., using...) Figure 8 The determining component 808 described herein can determine, at least in part, whether to initiate a channel occupancy time or to share a channel occupancy time initiated by the base station to perform an uplink transmission based on the content of the uplink transmission scheduled in the DCI, as described above.

[0099] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0100] In the first aspect, the content in the DCI indicates either a first LBT type for enabling UE-initiated channel occupancy time or a second LBT type for disabling UE-initiated channel occupancy time.

[0101] In the second aspect, either alone or in combination with the first aspect, the first LBT type is a category 2 LBT type and the second LBT type is a category 1 LBT type.

[0102] In the third aspect, either alone or in combination with one or more of the first and second aspects, the one or more FFP configurations are configured semi-statically using RRC signaling.

[0103] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, process 600 includes: enabling a UE-initiated channel occupancy time based at least in part on the content in the DCI and having an uplink transmission with a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations to initiate a channel occupancy time to perform uplink transmission; and performing uplink transmission based at least in part on the initiated channel occupancy time at the start time of the FFP.

[0104] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 600 includes: determining that the one or more FFP configurations are associated with a plurality of FFPs having different start times; and selecting from the plurality of FFPs, at least in part, an FFP to initiate the channel occupancy time therein, based on the FFP having a start time aligned with the start symbol of the uplink transmission.

[0105] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 600 includes: determining that the one or more FFP configurations are associated with a plurality of FFPs having the same start time; and selecting the FFP to initiate the channel occupancy time therein based at least in part on one or more bits in the DCI indicating the FFP among the plurality of FFPs to initiate the channel occupancy time therein.

[0106] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, process 600 includes: disabling UE-initiated channel occupancy time based at least in part on determining the content in the DCI or suppressing the initiation of channel occupancy time based at least in part on determining that the uplink transmission has a start symbol that is not aligned with the start time of at least one FFP associated with the one or more FFP configurations.

[0107] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 600 includes: performing uplink transmission at least in part based on the DCI that determines uplink transmission and enables or disables UE-initiated channel occupancy time during the channel occupancy time initiated by the base station.

[0108] In the ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 600 includes: canceling uplink transmission at least in part based on determining that the DCI for enabling or disabling the uplink transmission or the channel occupancy time initiated by the UE is not within the channel occupancy time initiated by the base station.

[0109] although Figure 6 An example box of process 600 is shown, but in some respects, process 600 may include... Figure 6 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 600 can be executed in parallel.

[0110] Figure 7 This is a diagram illustrating an example process 700 performed by a base station according to this disclosure. Example process 700 is an example in which a base station (e.g., base station 110) performs operations associated with a dynamic indication of channel occupancy time initiated by a UE.

[0111] like Figure 7 As shown, in some aspects, process 700 may include transmitting information to the UE indicating one or more FFP configurations in the FBE mode (block 710). For example, the base station (e.g., using...) Figure 9 The transmission component 904 described herein can transmit information to the UE indicating one or more FFP configurations in the FBE mode, as described above.

[0112] like Figure 7 As further shown, in some aspects, process 700 may include transmitting a DCI (Distributed Controlled Instruction) to the UE for scheduling uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by the UE using one or more FFP configurations (box 720). For example, a base station (e.g., using...) Figure 9 The transmission component 904 described herein can transmit a DCI for scheduling uplink transmissions to the UE, wherein the DCI includes enabling or disabling channel occupancy time initiated by the UE using one or more FFP configurations, as described above.

[0113] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0114] In the first aspect, the content in the DCI indicates either a first LBT type for enabling UE-initiated channel occupancy time or a second LBT type for disabling UE-initiated channel occupancy time.

[0115] although Figure 7 An example box of process 700 is shown, but in some respects, process 700 may include... Figure 7 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 700 can be executed in parallel.

[0116] Figure 8 This is a block diagram of an example device 800 for wireless communication. Device 800 may be a UE, or a UE may include device 800. In some aspects, device 800 includes a receiving component 802 and a transmitting component 804, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, device 800 may use the receiving component 806 and the transmitting component 802 to communicate with another device 804 (such as a UE, a base station, or another wireless communication device). As further shown, device 800 may include one or more of a determining component 808, an initiating component 810, or a selecting component 812, etc.

[0117] In some respects, device 800 can be configured to perform the functions described herein. Figures 5A-5E The described one or more operations. Additionally or alternatively, device 800 may be configured to perform one or more processes described herein, such as Figure 6 The process 600. In some respects, the equipment 800 and / or Figure 8 One or more components shown may include the above combination Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 8 One or more components shown can be combined as described above. Figure 2 Implemented within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0118] Receiver 802 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 806. Receiver 802 may provide the received communications to one or more other components of device 806. In some aspects, receiver 802 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.), and may provide the processed signal to one or more other components of device 806. In some aspects, receiver 802 may include combinations of the above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0119] Transmission component 804 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to device 806. In some aspects, one or more other components of device 806 can generate communications and provide the generated communications to transmission component 804 for transmission to device 806. In some aspects, transmission component 804 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and can transmit the processed signals to device 806. In some aspects, transmission component 804 can include combinations of the above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. In some aspects, the transmit component 804 may be co-located with the receive component 802 in a transceiver.

[0120] The receiving component 802 can receive information from the base station indicating one or more FFP configurations in the FBE mode. The receiving component 802 can also receive a DCI (Distributed Channel Access Control) for scheduling uplink transmissions from the base station, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations. The determining component 808 can determine, at least in part, whether to initiate channel occupancy time or share the channel occupancy time initiated by the base station to perform uplink transmissions, based on the content of the DCI for scheduling uplink transmissions.

[0121] Initiating component 810 may enable UE-initiated channel occupancy time based at least in part on the content in the DCI, and the uplink transmission may initiate channel occupancy time to perform uplink transmission by having a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations. Transmission component 804 may perform uplink transmission at the start time of the FFP based at least in part on the initiated channel occupancy time.

[0122] Determining component 808 can determine that the one or more FFP configurations are associated with multiple FFPs having different start times. Selecting component 812 can select from the multiple FFPs, at least in part, the FFP to initiate channel occupancy time, based on the FFP having a start time aligned with the start symbol of the uplink transmission.

[0123] Determining component 808 can determine that the one or more FFP configurations are associated with a plurality of FFPs having the same start time. Selecting component 812 can select the FFP to initiate the channel occupancy time based at least in part on one or more bits in the DCI indicating the FFP to initiate the channel occupancy time therein.

[0124] The initiating component 810 may at least partially disable the UE-initiated channel occupancy time based on determining the content in the DCI or at least partially based on determining that the uplink transmission has a start symbol that is not aligned with the start time of at least one FFP associated with the one or more FFP configurations to suppress the initiation of channel occupancy time.

[0125] The transmission component 804 may perform uplink transmission during the channel occupancy period initiated by the base station, at least in part, based on the DCI that determines uplink transmission and enables or disables the channel occupancy period initiated by the UE.

[0126] The transmission component 804 can cancel uplink transmission at least in part based on the determination that the uplink transmission or the DCI that enables or disables the UE-initiated channel occupancy time is not within the channel occupancy time initiated by the base station.

[0127] Figure 8The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 8 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 8 The two or more components shown can be implemented within a single component, or Figure 8 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The collection of components shown (e.g., one or more components) can be executed as described by Figure 8 The other set of components shown in the diagram performs one or more functions.

[0128] Figure 9 This is a block diagram of an example device 900 for wireless communication. Device 900 may be a base station, or a base station may include device 900. In some aspects, device 900 includes a receiving component 902 and a transmitting component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 900 may use the receiving component 902 and the transmitting component 904 to communicate with another device 906 (such as a UE, a base station, or another wireless communication device).

[0129] In some respects, device 900 can be configured to perform the actions described in this article. Figures 5A-5E One or more operations described herein. Additionally or alternatively, device 900 may be configured to perform or direct one or more processes described herein (such as...). Figure 7 The process 700) is associated with related operations. In some aspects, device 900 and / or Figure 9 One or more components shown may include the above combination Figure 2 One or more components of the described base station. Additional or alternative. Figure 9 One or more components shown can be combined as described above. Figure 2 The described base station is implemented within one or more components. Additionally or alternatively, one or more components of this set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transient computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0130] Receiver 902 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 906. Receiver 902 may provide the received communications to one or more other components of device 906. In some aspects, receiver 902 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.), and may provide the processed signal to one or more other components of device 906. In some aspects, receiver 902 may include combinations of the above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0131] Transmission component 904 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to device 906. In some aspects, one or more other components of device 906 can generate communications and provide the generated communications to transmission component 904 for transmission to device 906. In some aspects, transmission component 904 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and can transmit the processed signals to device 906. In some aspects, transmission component 904 can include combinations of the above. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 904 may coexist with the receive component 902 in a transceiver.

[0132] The transmission component 904 may transmit to the UE information indicating one or more FFP configurations in the FBE mode. The transmission component 904 may also transmit to the UE a DCI for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations. Accordingly, in some aspects, the UE may determine, at least in part, whether to initiate channel occupancy time or share channel occupancy time initiated by the base station to perform uplink transmissions based on the content of the DCI for scheduling uplink transmissions.

[0133] Figure 9 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 9 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 9 The two or more components shown can be implemented within a single component, or Figure 9 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 9The collection of components shown (e.g., one or more components) can be executed as described by Figure 9 The other set of components shown in the diagram performs one or more functions.

[0134] The following provides an overview of some aspects of this disclosure:

[0135] Aspect 1: A method for a UE to perform wireless communication, comprising: receiving from a base station information indicating one or more FFP configurations in an FBE mode; receiving from the base station a DCI for scheduling uplink transmissions, wherein the DCI includes content enabling or disabling channel occupancy time initiated by the UE using the one or more FFP configurations; and determining, at least in part, based on the content in the DCI for scheduling the uplink transmissions, whether to initiate channel occupancy time or to share channel occupancy time initiated by the base station to perform the uplink transmissions.

[0136] Aspect 2: The method as described in Aspect 1, wherein the content in the DCI indicates a first LBT type for enabling UE-initiated channel occupancy time or a second LBT type for disabling UE-initiated channel occupancy time.

[0137] Aspect 3: The method described in aspect 2, wherein the first LBT type is a category 2 LBT type and the second LBT type is a category 1 LBT type.

[0138] Aspect 4: The method described in any of Aspects 1-3, wherein the one or more FFP configurations are configured semi-statically using RRC signaling.

[0139] Aspect 5: The method of any one of Aspects 1-4 further includes: enabling UE-initiated channel occupancy time at least in part based on the content in the DCI and initiating channel occupancy time to perform uplink transmission by having a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations.

[0140] Aspect 6: The method of aspect 5 further includes: determining that the one or more FFP configurations are associated with a plurality of FFPs having different start times; and selecting from the plurality of FFPs, at least in part, an FFP to initiate the channel occupancy time therein, based on the fact that the FFP has a start time that is aligned with the start symbol of the uplink transmission.

[0141] Aspect 7: The method of aspect 5 further includes: determining that the one or more FFP configurations are associated with a plurality of FFPs having the same start time; and selecting the FFP to initiate the channel occupancy time therein based at least in part on one or more bits in the DCI indicating the FFP among the plurality of FFPs to initiate the channel occupancy time therein.

[0142] Aspect 8: The method of any of Aspects 1-4 further comprises: disabling UE-initiated channel occupancy time at least in part based on determining the content in the DCI or suppressing the initiation of channel occupancy time at least in part based on determining that the uplink transmission has a start symbol not aligned with the start time of at least one FFP associated with the one or more FFP configurations.

[0143] Aspect 9: The method of aspect 8 further includes: performing uplink transmission during the channel occupancy period initiated by the base station, based at least in part on the DCI that determines uplink transmission and enables or disables the channel occupancy period initiated by the UE.

[0144] Aspect 10: The method of aspect 8 further includes: canceling uplink transmission at least in part based on determining that the uplink transmission or the DCI that enables or disables the channel occupancy time initiated by the UE is not within the channel occupancy time initiated by the base station.

[0145] Aspect 11: A method for performing wireless communication by a base station, comprising: transmitting to a UE information indicating one or more FFP configurations in an FBE mode; and transmitting to the UE a DCI for scheduling uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by the UE using the one or more FFP configurations.

[0146] Aspect 12: The method as described in aspect 11, wherein the content in the DCI indicates a first LBT type for enabling UE-initiated channel occupancy time or a second LBT type for disabling UE-initiated channel occupancy time.

[0147] Aspect 13: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method as described in one or more of aspects 1-10.

[0148] Aspect 14: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors being configured to perform the methods described in one or more aspects of aspects 1-10.

[0149] Aspect 15: An apparatus for wireless communication, comprising at least one means for performing the method as described in one or more of aspects 1-10.

[0150] Aspect 16: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the methods described in one or more of aspects 1-10.

[0151] Aspect 17: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform the methods described in one or more of aspects 1-10.

[0152] Aspect 18: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the methods described in one or more of aspects 11-12.

[0153] Aspect 19: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors being configured to perform the methods described in one or more aspects of aspects 11-12.

[0154] Aspect 20: An apparatus for wireless communication, comprising at least one means for performing the method as described in one or more of aspects 11-12.

[0155] Aspect 21: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the methods described in one or more of aspects 11-12.

[0156] Aspect 22: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform the methods described in one or more aspects of aspects 11-12.

[0157] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be obtained through practice.

[0158] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. "Software" should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and / or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, processors are implemented using hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limited in any way. Thus, the operation and behavior of these systems and / or methods are described herein without reference to any specific software code—it is understood that software and hardware can be designed to implement these systems and / or methods, at least in part, based on the descriptions herein.

[0159] As used in this article, depending on the context, a threshold can refer to a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0160] Although specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. In fact, many of these features can be combined in ways not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below may be directly subordinated to only one claim, the disclosure of aspects includes each dependent claim being combined with each other claim in this set of claims. As used herein, the phrase “at least one of” refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0161] The elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “a certain” are intended to include one or more items and may be used interchangeably with “one or more.” Additionally, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Moreover, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms. Additionally, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Moreover, as used herein, the term “or” is intended to be inclusive when used in a sequence and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., in combination with “either of” or “only one of”).

Claims

1. A method for performing wireless communication by a user equipment (UE), comprising: Receive information indicating one or more fixed-frame-period FFP configurations in the frame-based equipment FBE mode; Receive downlink control information (DCI) for scheduling uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by a UE using one or more FFP configurations. The determination of whether to initiate a channel occupancy period or to share a channel occupancy period initiated by a network entity to perform the uplink transmission is based at least in part on the content of the uplink transmission scheduled in the DCI. The channel occupancy time initiated by the UE is enabled at least in part based on the content in the DCI, and the uplink transmission has a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations to initiate the channel occupancy time to perform the uplink transmission. The initiation includes: Determine that the one or more FFP configurations are associated with multiple FFPs having the same start time; and The FFP to initiate the channel occupancy time is selected at least in part based on one or more bits in the DCI that indicate the FFP to initiate the channel occupancy time therein; and The uplink transmission is performed at least in part based on the channel occupancy time initiated and the start time of the FFP.

2. The method as described in claim 1, wherein, The content in the DCI indicates either a first Listen-Before-Speak LBT type for enabling channel occupancy time initiated by the UE or a second LBT type for disabling channel occupancy time initiated by the UE.

3. The method of claim 2, wherein, The first LBT type is a category 2 LBT type and the second LBT type is a category 1 LBT type.

4. The method of claim 1, further comprising: The channel occupancy time initiated by the UE is suppressed at least in part based on determining the content in the DCI or at least in part based on determining that the uplink transmission has a start symbol that is not aligned with the start time of at least one FFP associated with the one or more FFP configurations.

5. The method of claim 4, further comprising: The uplink transmission is performed during the channel occupancy period initiated by the network entity, based at least in part on the DCI that determines the uplink transmission and enables or disables the channel occupancy period initiated by the UE.

6. The method of claim 4, further comprising: The uplink transmission is cancelled at least in part based on the determination that the DCI, which determines whether the uplink transmission or the channel occupancy time initiated by the UE is not within the channel occupancy time initiated by the network entity.

7. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, the one or more processors being configured to: Receive information indicating one or more fixed-frame-period FFP configurations in the frame-based equipment FBE mode; Receive downlink control information (DCI) for scheduling uplink transmissions, wherein the DCI includes content that enables or disables channel occupancy time initiated by a UE using one or more FFP configurations. The determination of whether to initiate a channel occupancy period or to share a channel occupancy period initiated by a network entity to perform the uplink transmission is based at least in part on the content of the uplink transmission scheduled in the DCI. The channel occupancy time initiated by the UE is enabled at least in part based on the content in the DCI, and the uplink transmission has a start symbol aligned with the start time of the FFP associated with the one or more FFP configurations to initiate the channel occupancy time to perform the uplink transmission. In order to initiate the channel occupancy time, the one or more processors are further configured to: Determine that the one or more FFP configurations are associated with multiple FFPs having the same start time; and The FFP to initiate the channel occupancy time is selected based at least in part on one or more bits in the DCI that indicate the FFP to initiate the channel occupancy time therein; as well as The uplink transmission is performed at least in part based on the channel occupancy time initiated and the start time of the FFP.

8. The UE as claimed in claim 7, wherein, The content in the DCI indicates either a first Listen-Before-Speak LBT type for enabling channel occupancy time initiated by the UE or a second LBT type for disabling channel occupancy time initiated by the UE.

9. The UE as claimed in claim 8, wherein, The first LBT type is a category 2 LBT type and the second LBT type is a category 1 LBT type.

10. The UE as claimed in claim 7, wherein, The one or more processors are further configured to: The channel occupancy time initiated by the UE is suppressed at least in part based on determining the content in the DCI or at least in part based on determining that the uplink transmission has a start symbol that is not aligned with the start time of at least one FFP associated with the one or more FFP configurations.

11. The UE as claimed in claim 10, wherein, The one or more processors are further configured to: The uplink transmission is performed during the channel occupancy period initiated by the network entity, based at least in part on the DCI that determines the uplink transmission and enables or disables the channel occupancy period initiated by the UE.

12. The UE as claimed in claim 10, wherein, The one or more processors are further configured to: The uplink transmission is cancelled at least in part based on the determination that the DCI, which determines whether the uplink transmission or the channel occupancy time initiated by the UE is not within the channel occupancy time initiated by the network entity.

Images