Power adaptive multi-subband clear channel assessment

Abstract

A configuration for configuring an apparatus to perform a clear channel assessment based on one or more transmit power levels. The apparatus measures at least one energy sense measurement on an operating channel. The apparatus determines whether the operating channel is available for transmission based on a threshold determination for the one or more transmit power levels. The apparatus transmits on the operating channel when the operating channel is determined to be available for transmission of the one or more transmit power levels, where the one or more transmit power levels are less than the threshold determination.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefits and priority of U.S. Provisional Application No. 63 / 064,366, filed August 11, 2020, entitled “Power Adaptive Multi-Subband Clear Channel Assessment”, and U.S. Patent Application No. 17 / 397,741, filed August 9, 2021, entitled “POWER ADAPTIVE MULTI-SUBBAND ​​CLEAR CHANNEL ASSESSMENT”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] In general, this disclosure relates to communication systems; more specifically, this disclosure relates to configurations for idle channel assessment. 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 may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband released by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT),) and others. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunications standards that adopt them. Summary of the Invention

[0006] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not a comprehensive summary of all anticipated aspects, and is neither intended to identify key or important elements of all aspects, nor to depict the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed descriptions that follow.

[0007] In one aspect of this disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus may be a device at a UE (User Equipment). The device may be a processor and / or modem at the UE, or the UE itself. The apparatus measures at least one energy sensing measurement on an operating channel. The apparatus determines whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels. When the apparatus determines that the operating channel is available for transmission at the one or more transmit power levels, it transmits on the operating channel. The one or more transmit power levels are less than the threshold determination.

[0008] In one aspect of this disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus may be a device at a base station. The device may be a processor and / or modem at the base station, or the base station itself. The apparatus measures at least one energy sensing measurement on an operating channel. The apparatus determines whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels. When the apparatus determines that the operating channel is available for transmission for the one or more transmit power levels, it transmits on the operating channel. The one or more transmit power levels are less than the threshold determination.

[0009] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and drawings set forth certain illustrative features of one or more aspects in detail. However, these features indicate only some of the various ways in which the principles of each aspect may be employed, and this specification is intended to include all such aspects and their equivalents. Attached Figure Description

[0010] Figure 1 This is a schematic diagram illustrating an example of a wireless communication system and access network.

[0011] Figure 2A This is a schematic diagram illustrating an example of the first frame of various aspects according to this disclosure.

[0012] Figure 2B This is a schematic diagram illustrating an example of a DL channel within a subframe according to various aspects of this disclosure.

[0013] Figure 2C This is a schematic diagram illustrating an example of a second frame according to various aspects of this disclosure.

[0014] Figure 2D This is a schematic diagram illustrating an example of a UL channel within a subframe according to various aspects of this disclosure.

[0015] Figure 3 This is a schematic diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0016] Figure 4 An example of a sensing threshold is shown.

[0017] Figure 5 An example of idle channel evaluation is shown.

[0018] Figure 6 An example of the relationship between sensing bandwidth and transmission bandwidth is shown.

[0019] Figure 7 An example of power-adaptive idle channel evaluation is shown.

[0020] Figure 8 An example of power-adaptive idle channel evaluation is shown.

[0021] Figure 9 An example of power-adaptive multi-subband idle channel evaluation is shown.

[0022] Figure 10 This is a call flow diagram illustrating the signaling between a UE and a base station according to certain aspects of this disclosure.

[0023] Figure 11 This is a flowchart of a wireless communication method.

[0024] Figure 12 This is a flowchart of a wireless communication method.

[0025] Figure 13 This is a schematic diagram illustrating an example of the hardware implementation used for the example device.

[0026] Figure 14 This is a flowchart of a wireless communication method.

[0027] Figure 15 This is a flowchart of a wireless communication method.

[0028] Figure 16 This is a schematic diagram illustrating an example of the hardware implementation used for the example device.

[0029] Specific implementation method

[0030] The detailed description below, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and not as representing only the configurations in which the concepts described herein can be practiced. For the purpose of providing a comprehensive understanding of the various concepts, the detailed description includes specific details. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in the form of block diagrams in order to avoid obscuring such concepts.

[0031] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and illustrated in the accompanying drawings by way of various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0032] By way of example, an element, or any part of an element, or any combination of elements, can be implemented as a “processing system” including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described herein. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, software should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc.

[0033] Accordingly, in one or more example embodiments, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium may be any available medium accessible by a computer. By way of example, and not limitation, such a computer-readable medium may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the types described above, or any other medium capable of storing computer-executable code in the form of computer-accessible instructions or data structures.

[0034] While this application describes aspects and implementations through the illustration of some examples, those skilled in the art will understand that other implementations and use cases can be implemented in many different arrangements and scenarios. The innovations described herein can be implemented across multiple different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, various implementations and / or uses can be implemented via integrated chip implementations and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (AI)-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide variety of applicability to the described innovations is possible. The range of implementations can be from chip-level or modular components to non-modular, non-chip-level implementations, and can also be aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals must include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / accumulators, etc.). The innovative technologies described herein can be implemented in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or decomposed components, end-user equipment, etc., with different sizes, shapes, and constructions.

[0035] Figure 1This is a schematic diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a user interface unit (UE) 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0036] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can be connected to EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can be connected to core network 190 via a second backhaul link 184. Among other functions, base station 102 can perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and equipment tracking, RAN information management (RIM), paging, location, and delivery of warning messages. Base station 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) via third backhaul link 134 (e.g., X2 interface). First backhaul link 132, second backhaul link 184 and third backhaul link 134 can be wired or wireless.

[0037] Base station 102 can wirelessly communicate with UE 104. Each base station in base station 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include evolved home node B (eNB) (HeNB), which can provide services to a restricted group referred to as a closed subscriber group (CSG). Communication link 112 between base station 102 and UE 104 may include uplink (UL) (also referred to as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also referred to as forward link) transmission from base station 102 to UE 104. Communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may be via one or more carriers. Base station 102 / UE 104 may use spectrum allocated in carrier aggregation for a total of up to YxMHz (x component carriers) for transmission in each direction, with a bandwidth of up to YMHz per carrier (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). Carriers may be adjacent to each other or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carrier may be referred to as the secondary cell (SCell).

[0038] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be achieved through various wireless D2D communication systems such as WiMedia, Bluetooth, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0039] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0040] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can improve coverage of the access network and / or increase the capacity of the access network.

[0041] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, the two initial operating bands have been designated as frequency range names FR1 (410MHz-7.125GHz) and FR2 (24.25GHz-52.6GHz). While a portion of FR1 is larger than 6GHz, FR1 is frequently (interchangeably) referred to as the “below 6GHz” band in various documents and articles. Similar naming issues sometimes occur with FR2, which is frequently (interchangeably) referred to as the “millimeter wave” (mmW) band in documents and articles, although this differs from the extremely high frequency (EHF) band (30GHz-300GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU).

[0042] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have identified the operating bands for these IF bands as the frequency range designation FR3 (7.125 GHz - 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the characteristics of FR1 and / or FR2 to the IF band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been identified as the frequency range designations FR4a or FR4-1 (52.6 GHz - 71 GHz), FR4 (52.6 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher frequency bands belongs to the EHF band.

[0043] In light of the foregoing, unless otherwise expressly stated, it should be understood that, if used herein, the terms "below 6 GHz," etc., can broadly refer to frequencies that are below 6 GHz, can be within FR1, or can include intermediate frequency band frequencies. Furthermore, unless otherwise expressly stated, it should be understood that, if used herein, the terms "millimeter wave," etc., can broadly refer to frequencies that can include intermediate frequency band frequencies, can be within FR2, FR4, FR4-a, or FR4-1, or can be within the EHF band.

[0044] Base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include and / or may be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in conventional sub-6 GHz spectrum at millimeter wave frequencies and / or near-millimeter wave frequencies to communicate with UE 104. When gNB 180 operates at millimeter wave or near-millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and shorter communication distance. Both base station 180 and UE 104 may include multiple antennas (e.g., antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0045] Base station 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182'. UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the optimal receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions for base station 180 may be the same or different. The transmit and receive directions for UE 104 may be the same or different.

[0046] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 may communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Typically, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides IP address allocation and other functions to the UE. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 can provide functions for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for MBMS transmission to content providers, can be used to authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and can be used to schedule MBMS transmissions. The MBMS gateway 168 can be used to distribute MBMS services to base stations 102 belonging to areas of a Multicast-Broadcast Single Frequency Network (MBSFN) that broadcasts specific services, and can be responsible for session management (start / stop) and collecting billing information related to eMBMS.

[0047] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 can communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that processes signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS streaming and session management. All user Internet Protocol (IP) packets are transmitted via UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP services 197. IP services 197 may include the Internet, intranets, IP Multimedia Subsystem (IMS), packet-switched (PS) streaming services, and / or other IP services.

[0048] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), Transmitter Receiver Point (TRP), or some other suitable term. Base station 102 provides access to EPC 160 or core network 190 for UE 104. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radio units, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, gaming consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some UE 104 devices may be referred to as IoT devices (e.g., parking meters, air pumps, ovens, vehicles, heart monitors, etc.). UE 104 can also be referred to as station, mobile station, user station, mobile unit, user unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile user station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. In some scenarios, the term UE can also be applied to one or more associated devices (such as device constellation arrangements). One or more of these devices can access the network jointly and / or individually.

[0049] Refer again Figure 1 In some aspects, UE 104 may be configured to perform an idle channel assessment based on one or more transmit power levels. For example, UE 104 may include an availability component 198 configured to determine whether an operational channel is available for transmission based on a threshold determination for one or more transmit power levels. UE 104 measures at least one energy sensing measurement on the operational channel. UE 104 determines whether the operational channel is available for transmission based on a threshold determination for one or more transmit power levels. When UE 104 determines that the operational channel is available for transmission at one or more transmit power levels, wherein the one or more transmit power levels are less than the threshold determination, it transmits on that operational channel.

[0050] Refer again Figure 1In some aspects, base station 180 may be configured to perform an idle channel assessment based on one or more transmit power levels. For example, base station 180 may include an availability component 199 configured to determine whether an operating channel is available for transmission based on a threshold determination for one or more transmit power levels. Base station 180 measures at least one energy sensing measurement on the operating channel. Base station 180 determines whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels. When base station 180 determines that the operating channel is available for transmission at one or more transmit power levels, wherein the one or more transmit power levels are less than the threshold determination, it performs a transmission on the operating channel.

[0051] Although the following description may focus on 5G NR, the concepts described herein can be applied to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0052] Figure 2A This is a schematic diagram 200 showing an example of the first subframe within a 5G NR frame structure. Figure 2B This is a schematic diagram 230 showing an example of a DL channel within a 5G NR subframe. Figure 2C This is a schematic diagram 250 showing an example of a second subframe within a 5G NR frame structure. Figure 2D This is a schematic diagram 280 illustrating an example of a UL channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to either DL or UL), or Time Division Duplex (TDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to both DL and UL). In the process of... Figure 2A , 2CIn the provided example, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all DL and all UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The UE is configured to have a slot format via the received Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0053] Figures 2A-2D The frame structure shown, and aspects of this disclosure, can be applied to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include micro-time slots, which may include 7, 4, or 2 symbols. Depending on whether the cyclic prefix (CP) is normal or extended, each time slot may include 14 or 12 symbols. For normal CP, each time slot may include 14 symbols, and for extended CP, each time slot may include 12 symbols. Symbols on the DL can be CP Orthogonal Frequency Division Multiplexing (OFDM) (CP-OFDM) symbols. Symbols on the UL can be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Spread Spectrum OFDM (DFT-s-OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) (for power-constrained scenarios; limited to a single stream). The number of time slots within a subframe is based on the CP and the digital scheme (numerology). The digital scheme defines the subcarrier spacing (SCS) and the symbol length / duration, which is effectively equal to 1 / SCS.

[0054]

[0055] For a standard CP (14 symbols / slot), different digital schemes μ0 through 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For an extended CP, digital scheme 2 allows 4 slots per subframe. Therefore, for both the standard CP and digital scheme μ0, there are 14 symbols / slot and 2 slots per subframe. μ One time slot / subframe. The subcarrier spacing can be equal to 2. μ*15kHz, where μ is the digital scheme from 0 to 4. Thus, the subcarrier spacing is 15kHz for digital scheme μ=0 and 240kHz for digital scheme μ=4. The symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A-2D Examples are provided for a standard CP with 14 symbols per slot and a digital scheme μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within the frame set, one or more different bandwidth portions (BWPs) can exist for frequency division multiplexing (see [link to example]). Figure 2B Each BWP can have a specific digital scheme and CP (normal or extended).

[0056] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)), which is extended by 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0057] As in Figure 2A As shown, some of the REs carry reference (pilot) signals (RS) for the UE. RS may include demodulation RS (DM-RS) for channel estimation at the UE (indicated as R for a specific configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS). RS may also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0058] Figure 2BExamples of various DL channels within a subframe of a frame are shown. The Physical Downlink Control Channel (PDCCH) carries the DCI in one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising six RE Groups (REGs), each REG comprising 12 consecutive REs in the OFDM symbols of an RB. A PDCCH within a BWP can be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during PDCCH monitoring timing on the CORESET, where PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can reside at higher and / or lower frequencies spanning the channel bandwidth. The Primary Synchronization Signal (PSS) can reside within symbol 2 of a specific subframe of the frame. UE 104 uses the PSS to determine subframe / symbol timing and physical layer identification. The Secondary Synchronization Signal (SSS) can reside within symbol 4 of a specific subframe of the frame. The UE uses the SSS to determine the physical layer cell identity group number and radio frame timing. Based on the Physical Layer Identity and Physical Layer Cell Identity Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on this PCI, the UE can determine the location of the DM-RS. The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) can be logically combined with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also known as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (e.g., System Information Block (SIB)), and paging messages.

[0059] As in Figure 2C As shown, some of the REs in the diagram carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be transmitted in the first one or two symbols preceding the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0060] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUCCH carries data and may also be used to carry buffer status reports (BSR), power headroom reports (PHR), and / or UCIs.

[0061] Figure 3 This is a block diagram illustrating communication between base station 310 and UE 350 in the access network. In the DL, IP packets from EPC 160 can be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functions. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides: RRC layer functions associated with: broadcasting system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with: header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with: transmission of upper-layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, MAC... Multiplexing of SDU to transport block (TB), demultiplexing of MACSDU from TB, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0062] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection of the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase phase shift keying (M-PSK), and M-order quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then combined using inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimation from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. The channel estimation can be derived from reference signals transmitted by UE 350 and / or channel condition feedback. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the corresponding spatial stream to modulate a radio frequency (RF) carrier for transmission.

[0063] At UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for UE 350. If multiple spatial streams are destined for UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, along with a reference signal, are recovered and demodulated by determining the most probable signal constellation point transmitted by base station 310. These soft decisions can be based on a channel estimate calculated by channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by base station 310 on the physical channel. The data and control signals are then provided to controller / processor 359, which implements Layer 3 and Layer 2 functions.

[0064] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0065] Similar to the functions described in conjunction with DL transmissions performed by base station 310, controller / processor 359 provides: RRC layer functions associated with: system information (e.g., MIB, SIB) acquisition, RRC connection and measurement reporting; PDCP layer functions associated with: header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with: transmission of upper-layer PDUs, error correction via ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing and logical channel prioritization.

[0066] The channel estimate derived by channel estimator 358 from a reference signal or feedback transmitted by base station 310 can be used by TX processor 368 to select an appropriate modulation and coding scheme and to facilitate spatial processing. The spatial stream generated by TX processor 368 can be provided to different antennas 352 via a separate transmitter 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0067] UL transmission at base station 310 is handled in a manner similar to that described for the receiver functions integrated at UE 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0068] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport channel and the logical channel to recover IP packets from the UE 350. IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0069] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform coupled operations. Figure 1 All aspects of 198.

[0070] At least one of the TX processor 316, RX processor 370, and controller / processor 375 can be configured to perform coupling. Figure 1 199 in all aspects.

[0071] In unlicensed spectrum, for example, spectrum below 6 GHz has specific bandwidths less than that of unlicensed spectrum at 60 GHz. Unlicensed spectrum at 60 GHz can allow the deployment of nodes with varying bandwidths, a phenomenon known as node operating channel heterogeneity. 60 GHz unlicensed spectrum can include attacker node bandwidth heterogeneity (where attacker nodes may cause frequency-selective interference) and victim node bandwidth heterogeneity (where victim nodes may experience frequency-selective interference). Utilizing NR technology, serving cell bandwidth heterogeneity can allow gNBs (e.g., base stations) and served UEs to operate on a single network operating channel using different bandwidths or BWPs. In some cases, a commonly agreed channelization may not exist. In some cases, non-NR victims and / or attackers may use wider bands (e.g., 2.16 GHz Radio Gigabit (WiGig)).

[0072] Figure 4 Example 400 of a sensing threshold is shown. The sensing threshold 402 used in the idle channel assessment process can be based on the device's output power within the operating channel bandwidth 404. Sensing threshold X T (P out This can be a function of the device's maximum effective isotropic radiated power (EIRP). For example, the sensing threshold at 60 GHz, as described in ETSI EN 302567 v2.1.1, can be expressed by the following formula:

[0073] X T (P out )=-47dBm+(40dBm-P out)

[0074] The sensing threshold can be independent of the bandwidth of the operating channel.

[0075] The sensing threshold at 60 GHz, as described in ETSI EN 302567v2.2.1, can be expressed by the following formula:

[0076] X T (P out )=-80dBm+10*log10(B)+(P_max dBm-P out dBm)

[0077] In some cases, such as for transmission bandwidth B and EIRP P out For 5GHz load-based devices, the sensing threshold can be expressed by the following formula:

[0078] X T (P out )=-73dBm+10*log10(B)+(23dBm-P out )

[0079] The threshold can be adjusted for a fixed EIRP P out The bandwidth required for the sensing increases. In this case, the sensing threshold can be a function of the bandwidth B.

[0080] Assume that the sensing threshold in unlicensed spectrum below 6 GHz is to be implemented in a channel with a 20 MHz Listen-Before-Speak (LBT) bandwidth. Without other techniques, the threshold used for transmitting at maximum power could include a fixed high threshold per 20 MHz (e.g., -52 dBm), or it could be determined based on the relationship between the channel bandwidth, the LBT bandwidth (e.g., 20 MHz), and the output power.

[0081] Figure 5 Example 500 of idle channel assessment is shown. In unlicensed band operation, the LBT or carrier sensing unit at the competing node can determine whether a competing time slot (e.g., 9 μs for below 6 GHz and 5 μs for 60 GHz) is available or busy for the node. The LBT or carrier sensing unit can determine whether the competing time slot is busy or available by measuring that the sensed interference level quality metric (e.g., received energy) is greater than a threshold. Energy can be measured over the bandwidth of the operating channel to sense the interference level. This threshold can typically depend on the power level, maximum transmit power, or EIRP.

[0082] like Figure 5As shown, an interference level quality calculation 512 (e.g., energy measurement) can be calculated on the input signal measurement 510, which can determine the measured metric Q 514 (e.g., energy). Threshold determination 504 can be based on auxiliary information 502 (e.g., but not limited to bandwidth, power level, or transmit power). The measured metric Q 514 is compared with a threshold 506 to determine a contention slot busy decision 508 (e.g., idle channel assessment). In some cases, if the measured metric Q 514 is greater than or equal to the threshold X(P) 506, the contention slot decision 516 can indicate that the contention slot is busy.

[0083] Figure 6 Example 600 illustrates the relationship between sensing bandwidth and transmission bandwidth. Figure 6 Example 600 includes a bandwidth map for base station 604 and UE 602. UE 602 includes UE RF filter 606, UE sensing bandwidth 608, UE active BWP 610, and UE transmission 612. Base station 604 includes base station RF filter 614, network operation channel bandwidth 616, sensing bandwidth 618, and base station transmission 620. UE 602 and base station 604 also include an overall frequency range.

[0084] UE RF filter 606 filters out bandwidth that UE 602 will not use. Sensing bandwidth (e.g., 608, 618) may include measuring the energy on it to determine the bandwidth for channel access in unlicensed / shared spectrum. In some aspects, the sensing bandwidth for UE 602 and base station 604 may be a multiple of the 20 MHz LBT bandwidth. UE Active BWP 610 allows the UE to save power and does not always occupy the entire bandwidth. UE Transmission 612 is the bandwidth of the actual transmission from UE 602.

[0085] The base station RF filter 614 filters out bandwidth that may not be within the base station's operating channel bandwidth. The network operating channel bandwidth 616 refers to the channel that can be used by the base station for transmission. Base station transmission 620 is the actual transmission bandwidth from base station 604.

[0086] This paper provides various aspects of configuring a channel access mechanism in which a competing node can perform energy detection decisions based on transmit power. In some aspects, the channel access mechanism allows a competing node to perform simultaneous energy detection decisions on multiple subbands, enabling the contention access rule to be defined as allowing each transmission burst to dynamically use a transmit power / energy sensing threshold. A competing node can use different sensing thresholds and correspondingly different transmit powers on each subband to simultaneously occupy multiple subbands.

[0087] Figure 7An example 700 of power adaptive idle channel assessment is shown. In some aspects, a single energy measurement e 708 can be performed on the sensing bandwidth 706 of the operating channel for idle channel assessment for a competing node. The competing node can perform an LBT procedure on the channel bandwidth or the BWP bandwidth. In some aspects, the unit of the LBT bandwidth can be defined such that the competing node can perform the LBT procedure over all LBT bandwidth units to be transmitted within the channel bandwidth. In some aspects, the unit of the LBT bandwidth can be a function of the channel, carrier, or BWP bandwidth. For example, the size of the LBT bandwidth unit can increase with the channel, carrier, or BWP bandwidth. For example, for a 100 MHz channel bandwidth, the LBT bandwidth could be 20 MHz, and for a 2000 MHz channel bandwidth, the LBT bandwidth could be 400 MHz. In some aspects, the LBT bandwidth size can be based on the carrier / channel or BWP bandwidth. In some aspects, the subband sensed as part of the energy detection decision can include the unit of the LBT bandwidth. The contention slot idle channel assessment decision can be provided based on the transmit power P. For example, a decision sequence can be provided based on transmit power, such that for transmit power values ​​greater than a threshold, the operational channel can be determined as unavailable, while for transmit power values ​​less than the threshold, the operational channel can be determined as available. If Q > X(P), the operational channel can be considered as busy or unavailable for transmit power P, where Q is the energy measurement e^(708) and X(P) is the threshold. This threshold can be expressed by the following formula:

[0088]

[0089] For example, energy measurement e 708 can be the energy sensed within sensing bandwidth 706. The energy measurement value e 708 can be greater than the energy X. b 704, but less than energy X a 702. Greater than energy X b The energy measurement value e of 704 and 708 can indicate the corresponding power value P within the sensing bandwidth 706. b 710 may have too much interference, thus the operating channel or transmission bandwidth 714 can be determined for the power value P. b 704 Not available. Energy measurement value e 708 is less than energy X. a 702 can indicate that a corresponding power value P may not exist within the sensing bandwidth 706. a The interference problem of 712 allows the operating channel or transmission bandwidth 714 to be determined as usable for the power value P. a 714. Accordingly, competing nodes can use power values ​​P a 712 is transmitted within the transmission bandwidth 714, but not at a power value P. b710 transmits within this transmission bandwidth. Contesting nodes can also transmit at a power level less than P. a The power value of 712 is transmitted within the transmission frequency band.

[0090] Figure 8 An example 800 of power-adaptive idle channel evaluation is shown. Auxiliary information 802 can be provided for threshold determination 804. Auxiliary information 802 may include information related to bandwidth, power level, or transmit power. When performing threshold determination 804 for each power value P, threshold determination 804 may take auxiliary information 802 into account to determine a threshold X(P) 806 based on the transmit power. Input signal measurement 810 may include energy measurements, such as… Figure 7 Measurement e 708 is shown in the diagram. Interference level quality calculation 812 can take signal measurement 810 into account to determine the measurement metric Q 814, thereby determining whether the signal measurement exceeds or falls below the interference level (e.g., X). a 702 or X b 704). A contention slot busy determination 808 can be determined based on the measured metric Q 814 and the threshold X(P) 806. For example, if Q ≥ X(P), the operating channel can be determined to be busy. In some aspects, if a base station or network entity is transmitting a broadcast signal (e.g., SSB), operation with different transmit powers at different times can be disabled. For example, if a base station transmits a broadcast signal to a competing node during the measurement of energy e 708 in the sensing bandwidth, energy measurement can be disabled for a period of time. Energy measurement can then be resumed.

[0091] Figure 9 Example 900 of power-adaptive multi-subband idle channel evaluation is shown. In some aspects, for a single idle channel evaluation decision at a competing node, multiple energy sensing measurements can be performed on the operating channels in different subbands. The maximum allowable power or EIRP X can be identified in each subband 906, 908. a 902, X a 904, to account for idle channel evaluation time slots. Contesting nodes can use each transmit power (e.g., P) for each subband. b 910, P aThe idle channel assessment decision (912) (where each transmit power does not exceed the allowed power in the subband) is used to access the channel under the LBT procedure. In some aspects, the competing node can perform multiple LBT procedures. The competing node can perform the corresponding LBT procedure for each channel bandwidth separately. In some aspects, the content node can perform a single LBT procedure on all CCs. In some aspects, the unit of LBT bandwidth can be defined so that the competing node can perform LBT procedures in all LBT bandwidth units to be transmitted in the channel bandwidth of each CC. For example, subband energy measurement in subbands r1 906 and r2 908 of the sensing bandwidth (e.g., Figure 9 The values ​​of e1 and e2 can respectively lead to the determination of: the maximum permissible subband power tuple (P1, P2) = (P a ,P b Under this condition, the operating channel is available. This allows for faster channel access for a wider frequency band in broadband unlicensed operations. The threshold can be expressed by the following formula:

[0092]

[0093] Accordingly, the threshold can be a function of the channel bandwidth of the subband configuration. For example, in some aspects, the subband or sensing bandwidth r2 908 may include a wider or larger bandwidth than the subband or sensing bandwidth r1 906, such that the subband or sensing bandwidth r2 908 can have a higher threshold based on the threshold equation described above. For example, the subband energy measurements e1 and e2 in subbands r1 and r2 can respectively result in the maximum permissible subband power tuple (P1, P2) = (P a ,P b The available free channels are evaluated and determined.

[0094] In some aspects, if the base station or network entity is transmitting a broadcast signal (e.g., SSB), operation with different transmit powers in different subbands can be disabled. In some aspects, if the UE is using a single-carrier waveform (e.g., but not limited to DFT-s-OFDM), operation with different transmit powers in different subbands can be disabled.

[0095] Figure 10 This is a call flowchart 1000 showing the signaling between UE 1002 and base station 1004. Base station 1004 can be configured to provide a cell. UE 1002 can be configured to communicate with base station 1004. For example, in Figure 1In the context of this, base station 1004 may correspond to base station 102 / 180, and therefore, the cell may include a geographical coverage area 110 in which communication coverage is provided and / or small cell 102' has a coverage area 110'. Furthermore, UE 1002 may correspond to at least UE 104. In another example, in Figure 3 In the context of UE 1004, UE 1004 can correspond to UE 310, and UE 1002 can correspond to UE 350.

[0096] As shown at 1006, UE 1002 can measure at least one energy sensing measurement on the operating channel. As shown at 1008, base station 1004 can measure at least one energy sensing measurement on the operating channel. In some aspects, the at least one energy sensing measurement may include the energy level of the operating channel measured within the sensing bandwidth. Figure 10 In the example, for simplicity, UE 1002 and base station 1004 are shown performing the same signaling steps simultaneously. However, this disclosure is not intended to be limited to the aspects set forth herein. In some aspects, UE 1002 may perform the signaling steps independently of base station 1004. Figure 10 The signaling, and base station 1004 can execute independently of UE 1002. Figure 10 The signaling.

[0097] As shown at 1010, base station 1004 can transmit a broadcast signal (e.g., SSB). UE 1002 can receive a broadcast signal (e.g., SSB) from base station 1004. In some aspects, base station 1004 can transmit a broadcast signal (e.g., SSB) during the sensing bandwidth.

[0098] As shown in 1012, UE 1002 can disable at least one energy sensing measurement. If base station 1004 transmits a broadcast signal (e.g., SSB) during the sensing bandwidth, UE 1002 can disable at least one energy sensing measurement. If a network entity transmits a broadcast signal during the sensing bandwidth, UE 1002 can disable at least one energy sensing measurement. In some aspects, base station 1004 can disable at least one energy sensing measurement. If base station 1004 transmits a broadcast signal (e.g., SSB) during the sensing bandwidth, then at 1014, base station 1004 can disable at least one energy sensing measurement. If a network entity transmits a broadcast signal during the sensing bandwidth, base station 1004 can disable at least one energy sensing measurement.

[0099] As shown at 1016, UE 1002 can determine whether the operating channel is available for transmission. UE 1002 can determine whether the operating channel is available for transmission based on one or more thresholds for transmit power levels. As shown at 1018, base station 1004 can determine whether the operating channel is available for transmission. Base station 1004 can determine whether the operating channel is available for transmission based on thresholds for one or more transmit power levels. In some aspects, one or more transmit power levels greater than the threshold determination can be used to determine that the operating channel is not available for transmission. Each of the one or more transmit power levels can be measured for the threshold determination to determine whether the operating channel is available for transmission. In some aspects, the operating channel can be determined to be available for transmission for each of the one or more transmit power levels. Determining whether the operating channel is available for transmission can be further based on threshold determination for one or more transmit power levels and energy levels measured within the sensing bandwidth. In some aspects, the at least one energy sensing measurement can include multiple energy sensing measurements measured on different subbands of the operating channel. The maximum transmit power level can be identified for each sub-band within different sub-bands, allowing determination of whether the operational channel is available for transmission for each sub-band. For each sub-band where the transmit power level does not exceed the maximum transmit power level, the operational channel is available for transmission.

[0100] As shown at 1020, once it is determined that the operating channel is available for transmission, UE 1002 or base station 1004 can transmit on the operating channel. UE 1002 or base station 1004 can transmit on the operating channel when it is determined that the operating channel is available for transmission at one or more transmit power levels. The one or more transmit power levels can be determined to be less than a threshold.

[0101] Figure 11 This is a flowchart 1100 of a wireless communication method. The method can be performed by a UE or a component of a UE (e.g., UE 104, 1002; device 1302; cellular baseband processor 1304, which may include memory 360 and may be the entire UE 350 or a component of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more operations shown can be omitted, transposed, or performed simultaneously. This method allows the UE to perform idle channel assessment based on one or more transmit power levels.

[0102] At 1102, the UE can measure at least one energy sensing measurement on the operating channel. For example, 1102 can be performed by the measurement component 1340 of device 1302. In some aspects, the at least one energy sensing measurement may include an energy level measured on the operating channel within the sensing bandwidth.

[0103] At 1104, the UE can determine whether the operational channel is available for transmission. For example, 1104 can be performed by the availability component 1344 of device 1302. The UE can determine whether the operational channel is available for transmission based on a threshold determination for one or more transmit power levels. In some aspects, one or more transmit power levels greater than the threshold determination can be used to determine that the operational channel is not available for transmission. Each of the one or more transmit power levels can be measured for the threshold determination to determine whether the operational channel is available for transmission. In some aspects, the operational channel can be determined to be available for transmission for each of the one or more transmit power levels. Determining whether the operational channel is available for transmission can be further based on: a threshold determination for one or more transmit power levels and an energy level measured within a sensing bandwidth. In some aspects, the at least one energy sensing measurement can include multiple energy sensing measurements measured on different subbands of the operational channel. A maximum transmit power level can be identified for each subband of the different subbands to determine whether the operational channel is available for transmission for each subband of the different subbands. For each subband where the transmit power level does not exceed the maximum transmit power level, the operational channel is available for transmission.

[0104] At 1106, when it is determined that the operating channel is available for transmission, the UE may transmit on that operating channel. For example, 1108 may be performed by the channel component 1346 of device 1302. When it is determined that the operating channel is available for transmission for one or more transmit power levels, the UE may transmit on that operating channel. The one or more transmit power levels may be determined to be less than a threshold.

[0105] Figure 12 This is a flowchart 1200 of a wireless communication method. The method can be performed by a UE or a component of a UE (e.g., UE 104, 1002; device 1302; cellular baseband processor 1304, which may include memory 360 and may be the entire UE 350 or a component of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more operations shown can be omitted, transposed, or performed simultaneously. This method allows the UE to perform idle channel assessment based on one or more transmit power levels.

[0106] At 1202, the UE can measure at least one energy sensing measurement on the operating channel. For example, 1202 can be performed by the measurement component 1340 of device 1302. In some aspects, the at least one energy sensing measurement may include an energy level measured on the operating channel within the sensing bandwidth.

[0107] At 1204, the UE can disable at least one energy sensing measurement. For example, 1204 can be performed by the disabling component 1342 of device 1302. The UE can disable at least one energy sensing measurement if the base station transmits a broadcast signal (e.g., SSB) during the sensing bandwidth. The UE can disable at least one energy sensing measurement if a network entity transmits a broadcast signal during the sensing bandwidth.

[0108] At 1206, the UE can determine whether the operational channel is available for transmission. For example, 1206 can be performed by the availability component 1344 of device 1302. The UE can determine whether the operational channel is available for transmission based on a threshold determination for one or more transmit power levels. In some aspects, one or more transmit power levels greater than the threshold determination can be used to determine that the operational channel is not available for transmission. Each of the one or more transmit power levels can be measured for the threshold determination to determine whether the operational channel is available for transmission. In some aspects, the operational channel can be determined to be available for transmission for each of the one or more transmit power levels. Determining whether the operational channel is available for transmission can be further based on: a threshold determination for one or more transmit power levels and an energy level measured within a sensing bandwidth. In some aspects, the at least one energy sensing measurement can include multiple energy sensing measurements measured on different subbands of the operational channel. A maximum transmit power level can be identified for each subband of the different subbands to determine whether the operational channel is available for transmission for each subband of the different subbands. For each subband where the transmit power level does not exceed the maximum transmit power level, the operational channel is available for transmission.

[0109] At point 1208, when it is determined that the operating channel is available for transmission, the UE may transmit on that operating channel. For example, 1208 may be performed by the channel component 1346 of device 1302. When it is determined that the operating channel is available for transmission at one or more transmit power levels, the UE may transmit on that operating channel. The one or more transmit power levels may be determined to be less than a threshold.

[0110] Figure 13This is a schematic diagram 1300 illustrating an example of a hardware implementation for device 1302. Device 1302 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, device 1302 may include a cellular baseband processor 1304 (also referred to as a modem) coupled to a cellular RF transceiver 1322. In some aspects, device 1302 may also include one or more Subscriber Identity Module (SIM) cards 1320, an application processor 1306 coupled to a Secure Digital Card (SD) card 1308 and a screen 1310, a Bluetooth module 1312, a Wireless Local Area Network (WLAN) module 1314, a Global Positioning System (GPS) module 1316, or a power supply 1318. Cellular baseband processor 1304 communicates with UE 104 and / or BS 102 / 180 via cellular RF transceiver 1322. Cellular baseband processor 1304 may include computer-readable media / memory. This computer-readable media / memory may be non-transitory. The cellular baseband processor 1304 is responsible for general processing, including executing software stored on a computer-readable medium / memory. When the software is executed by the cellular baseband processor 1304, it causes the cellular baseband processor 1304 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 1304 while executing the software. The cellular baseband processor 1304 also includes a receiving component 1330, a communication manager 1332, and a transmitting component 1334. The communication manager 1332 includes one or more of the components shown. The components within the communication manager 1332 can be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1304. The cellular baseband processor 1304 can be a component of the UE 350 and can include at least one of the TX processor 368, the RX processor 356, and the controller / processor 359 and / or memory 360. In one configuration, device 1302 may be a modem chip and include only baseband processor 1304, while in another configuration, device 1302 may be the entire UE (e.g., see...). Figure 3 (350) and includes other modules of device 1302.

[0111] Communication manager 1332 includes measurement component 1340, which is configured to measure at least one energy sensing measurement on the operating channel, for example, as in combination with Figure 11 1102 or Figure 12 As described in 1202. The communication manager 1332 also includes a disabling component 1342 configured to disable the at least one energy sensing measurement, for example, as in conjunction with... Figure 12As described in 1204. The communication manager 1332 also includes an availability component 1344 configured to determine whether the operating channel is available for transmission, for example, as in conjunction with... Figure 11 1104 or Figure 12 As described in 1206. The communication manager 1332 also includes a channel component 1346 configured to transmit on an operational channel when it is determined that the operational channel is available for transmission, for example, as in conjunction with... Figure 11 1106 or Figure 12 As described in 1208.

[0112] The device may include means for performing Figure 11 and Figure 12 The other components of each box in the algorithm of the aforementioned flowchart. Accordingly, Figure 11 and Figure 12 Each block in the aforementioned flowchart can be executed by a component, and the apparatus can include one or more of these components. These components can be one or more hardware components specifically configured to perform the stated process / algorithm, implemented by a processor configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0113] As shown, device 1302 may include various components configured for various functions. In one configuration, device 1302 (specifically cellular baseband unit 1304) includes: a unit for measuring at least one energy sensing measurement on an operating channel. The device includes: a unit for determining whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels. The device includes: a unit for transmitting on the operating channel when it is determined that the operating channel is available for transmission at one or more transmit power levels. The one or more transmit power levels are less than the threshold determination. The device also includes: a unit for disabling at least one energy sensing measurement when the base station transmits a broadcast signal during a sensing bandwidth period. These units may be one or more components of device 1302 configured to perform the functions described above. As described above, device 1302 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Accordingly, in one configuration, these units may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions described above.

[0114] Figure 14This is a flowchart 1400 of a wireless communication method. The method can be performed by a base station or a component of a base station (e.g., base station 102 / 180, 1004; device 1602; baseband unit 1604, which may include memory 376 and may be the entire base station 310 or a component of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more of the operations shown can be omitted, transposed, or performed simultaneously. This method allows the base station to perform idle channel assessment based on one or more transmit power levels.

[0115] At 1402, the base station can measure at least one energy sensing measurement on the operating channel. For example, 1402 can be performed by the measurement component 1640 of device 1602. In some aspects, the at least one energy sensing measurement may include an energy level measured on the operating channel within the sensing bandwidth.

[0116] At 1404, the base station can determine whether the operational channel is available for transmission. For example, 1404 can be performed by the availability component 1644 of device 1602. The base station can determine whether the operational channel is available for transmission based on a threshold determination for one or more transmit power levels. In some aspects, one or more transmit power levels greater than the threshold determination can be used to determine that the operational channel is not available for transmission. Each of the one or more transmit power levels can be measured for the threshold determination to determine whether the operational channel is available for transmission. In some aspects, the operational channel can be determined to be available for transmission for each of the one or more transmit power levels. Determining whether the operational channel is available for transmission can be further based on: a threshold determination for one or more transmit power levels and an energy level measured within a sensing bandwidth. In some aspects, the at least one energy sensing measurement can include multiple energy sensing measurements measured on different subbands of the operational channel. A maximum transmit power level can be identified for each subband of the different subbands to determine whether the operational channel is available for transmission for each subband of the different subbands. For each subband where the transmit power level does not exceed the maximum transmit power level, the operational channel is available for transmission.

[0117] At point 1406, when it is determined that the operating channel is available for transmission, the base station may transmit on that operating channel. For example, 1406 may be performed by the channel component 1646 of device 1602. When it is determined that the operating channel is available for transmission at one or more transmit power levels, the base station may transmit on that operating channel. The one or more transmit power levels may be determined to be less than a threshold.

[0118] Figure 15This is a flowchart 1500 of a wireless communication method. The method can be performed by a base station or a component of a base station (e.g., base station 102 / 180, 1004; device 1602; baseband unit 1604, which may include memory 376 and may be the entire base station 310 or a component of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more operations shown can be omitted, transposed, or performed simultaneously. This method allows the base station to perform idle channel assessment based on one or more transmit power levels.

[0119] At point 1502, the base station can measure at least one energy sensing measurement on the operating channel. For example, 1502 can be performed by the measurement component 1640 of device 1602. In some aspects, the at least one energy sensing measurement may include an energy level measured on the operating channel within the sensing bandwidth.

[0120] At 1504, the base station can disable at least one energy sensing measurement. For example, 1504 can be performed by the disabling component 1642 of device 1602. The base station can disable at least one energy sensing measurement if it transmits a broadcast signal (e.g., SSB) during the sensing bandwidth. The base station can disable at least one energy sensing measurement if a network entity transmits a broadcast signal during the sensing bandwidth.

[0121] At 1506, the base station can determine whether the operational channel is available for transmission. For example, 1506 can be performed by the availability component 1644 of device 1602. The base station can determine whether the operational channel is available for transmission based on a threshold for one or more transmit power levels. In some aspects, one or more transmit power levels greater than the threshold determined can be used to determine that the operational channel is not available for transmission. Each of the one or more transmit power levels can be measured for the threshold determination to determine whether the operational channel is available for transmission. In some aspects, the operational channel can be determined to be available for transmission for each of the one or more transmit power levels. Determining whether the operational channel is available for transmission can be further based on: a threshold determination for one or more transmit power levels and an energy level measured within a sensing bandwidth. In some aspects, the at least one energy sensing measurement can include multiple energy sensing measurements measured on different subbands of the operational channel. A maximum transmit power level can be identified for each subband of the different subbands to determine whether the operational channel is available for transmission for each subband of the different subbands. For each subband where the transmit power level does not exceed the maximum transmit power level, the operational channel is available for transmission.

[0122] At point 1508, when it is determined that the operating channel is available for transmission, the base station may transmit on that operating channel. For example, 1508 may be performed by the channel component 1646 of device 1602. When it is determined that the operating channel is available for transmission at one or more transmit power levels, the base station may transmit on that operating channel. The one or more transmit power levels may be determined to be less than a threshold.

[0123] Figure 16 This is a schematic diagram 1600 illustrating an example of a hardware implementation of device 1602. Device 1602 may be a base station, a component of a base station, or may implement base station functions. In some aspects, device 1602 may include a baseband unit 1604. Baseband unit 1604 may communicate with UE 104 via cellular RF transceiver 1622. Baseband unit 1604 may include computer-readable medium / memory. Baseband unit 1604 is responsible for general processing, including executing software stored on the computer-readable medium / memory. When the software is executed by baseband unit 1604, it causes baseband unit 1604 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by baseband unit 1604 during software execution. Baseband unit 1604 also includes a receiving component 1630, a communication manager 1632, and a transmitting component 1634. Communication manager 1632 includes one or more of the components shown. The components within the communication manager 1632 may be stored in a computer-readable medium / memory and / or configured as hardware within the baseband unit 1604. The baseband unit 1604 may be a component of the base station 310 and may include at least one of the TX processor 316, the RX processor 370, and the controller / processor 375 and / or the memory 376.

[0124] Communication manager 1632 includes measurement component 1640, which can measure at least one energy sensing measurement on the operating channel, for example, as in combination with Figure 14 1402 or Figure 15 As described in 1502. The communication manager 1632 also includes a disabling component 1642, which can disable at least one energy sensing measurement, for example, as in combination with Figure 15 As described in 1504. The communication manager 1632 also includes an availability component 1644, which can determine whether the operating channel is available for transmission, for example, as in combination with Figure 14 1404 or Figure 15 As described in 1506. The communication manager 1632 also includes a channel component 1646, which can transmit on the operating channel when it is determined that the operating channel is available for transmission, for example, as in combination with Figure 14 1406 or Figure 15 As described in 1508.

[0125] The device may include means for performing Figure 14 and Figure 15 The other components of each box in the algorithm of the aforementioned flowchart. Therefore, Figure 14 and Figure 15 Each block in the aforementioned flowchart can be executed by a component, and the apparatus can include one or more of these components. These components can be one or more hardware components specifically configured to perform the stated process / algorithm, implemented by a processor configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0126] As shown, device 1602 may include various components configured for various functions. In one configuration, device 1602 (specifically baseband unit 1604) includes: a unit for measuring at least one energy sensing measurement on an operating channel. The device includes: a unit for determining whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels. The device includes: a unit for transmitting on the operating channel when it is determined that the operating channel is available for transmission at one or more transmit power levels. The one or more transmit power levels are less than the threshold determination. The device also includes: a unit for disabling at least one energy sensing measurement when the base station transmits a broadcast signal during a sensing bandwidth period. These units may be one or more components of device 1602 configured to perform the functions described in the foregoing units. As described above, device 1602 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Accordingly, in one configuration, these units may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions stated in the foregoing units.

[0127] It is to be understood that the specific order or hierarchy of the boxes in the disclosed process / flowchart is illustrative of the example method. It is to be understood that the specific order or hierarchy of the boxes in the process / flowchart may be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims give the elements of the boxes in the example order, but are not intended to limit one to the specific order or hierarchy given.

[0128] To enable any person skilled in the art to implement the various aspects described herein, the foregoing descriptions have been made around these aspects. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may also apply to other aspects. Therefore, this claim is not limited to the aspects shown herein, but is consistent with the full scope disclosed in the language of this claim, wherein, unless specifically stated otherwise, the use of the singular form to modify a component does not mean "one and only one," but can mean "one or more." Terms such as "if," "when," and "at" should be interpreted as "under the condition of," rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., "when") do not mean immediate action in response to an action or action taken during the occurrence of an action, but simply mean that an action will occur if the condition is met, without requiring a specific or immediate temporal constraint on the occurrence of that action. The term "exemplary" as used herein means "serving as an example, illustration, or description." Any aspect described herein as "exemplary" should not be construed as preferred or superior to other aspects. Unless otherwise specifically stated, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, and may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may contain one or more members or some members of A, B, or C. All structural and functional equivalents of components throughout the various aspects described in this disclosure are expressly incorporated herein by reference and are intended to be covered by the claims, and such structural and functional equivalents are well known or will be known to those skilled in the art. Furthermore, nothing disclosed herein is intended to be made public, regardless of whether such disclosure is explicitly stated in the claims. Terms such as “module,” “device,” “element,” “device,” etc., are not substitutes for the word “unit.” Accordingly, the constituent elements of a claim should not be interpreted as functional units unless the constituent element is explicitly described using the phrase “unit for…”.

[0129] The following aspects are illustrative only and may be combined with, but not limited to, other aspects or teachings described herein.

[0130] Aspect 1 is an apparatus for wireless communication at a UE, the apparatus including at least one processor coupled to a memory, and configured to: measure at least one energy sensing measurement on an operating channel; determine whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels; and transmit on the operating channel when it is determined that the operating channel is available for transmission at the one or more transmit power levels, wherein the one or more transmit power levels are less than the threshold determination.

[0131] Aspect 2 is the apparatus according to aspect 1, further comprising a transceiver coupled to the at least one processor.

[0132] Aspect 3 is the apparatus according to any one of aspects 1 and 2, further comprising: determining the operating channel as unusable for transmission using the one or more transmit power levels determined by the threshold.

[0133] Aspect 4 is the apparatus according to any one of aspects 1-3, further comprising: the at least one energy sensing measurement including an energy level measured on the operating channel within a sensing bandwidth.

[0134] Aspect 5 is the apparatus according to any one of aspects 1-4, further comprising: measuring each of the one or more transmit power levels in relation to the threshold determination to determine whether the operating channel is available for transmission.

[0135] Aspect 6 is the apparatus according to any one of aspects 1-5, further comprising: determining, for each of the one or more transmit power levels, whether the operating channel is available for or unavailable for transmission.

[0136] Aspect 7 is the apparatus according to any one of aspects 1-6, further comprising: determining whether the operating channel is available for transmission of an energy level further determined based on the threshold for the one or more transmit power levels and measured within a sensing bandwidth.

[0137] Aspect 8 is the apparatus according to any one of aspects 1-7, further comprising: the at least one processor being further configured to disable the at least one energy sensing measurement if the base station transmits a broadcast signal during the sensing bandwidth.

[0138] Aspect 9 is the apparatus according to any one of aspects 1-8, further comprising: the at least one energy sensing measurement comprising a plurality of energy sensing measurements measured on different subbands of the operating channel.

[0139] Aspect 10 is the apparatus according to any one of aspects 1-9, further comprising: identifying a maximum transmit power level for each of the different sub-bands to determine whether the operating channel is available for transmission for each of the different sub-bands.

[0140] Aspect 11 is the apparatus according to any one of aspects 1-10, further comprising: for each subband with a transmit power level not exceeding the maximum transmit power level, the operating channel can be used for transmission.

[0141] Aspect 12 is a wireless communication method for implementing any of aspects 1-11.

[0142] Aspect 13 is a device for wireless communication, which includes units for implementing any of aspects 1-11.

[0143] Aspect 14 is a computer-readable medium storing computer-executable code, wherein when the code is executed by a processor, the processor implements any of aspects 1-11.

[0144] Aspect 15 is an apparatus for wireless communication at a base station, the apparatus including at least one processor coupled to a memory, configured to: measure at least one energy sensing measurement on an operating channel; determine whether the operating channel is available for transmission based on a threshold determination for one or more transmit power levels; and transmit on the operating channel when it is determined that the operating channel is available for transmission at the one or more transmit power levels, wherein the one or more transmit power levels are less than the threshold determination.

[0145] Aspect 16 is the apparatus according to aspect 15, further comprising a transceiver coupled to the at least one processor.

[0146] Aspect 17 is the apparatus according to any one of aspects 15 and 16, further comprising: determining the operating channel as unusable for transmission using the one or more transmit power levels determined by the threshold.

[0147] Aspect 18 is an apparatus according to any one of aspects 15-17, further comprising: the at least one energy sensing measurement including an energy level measured on the operating channel within a sensing bandwidth.

[0148] Aspect 19 is an apparatus according to any one of aspects 15-18, further comprising: measuring each of the one or more transmit power levels in relation to the threshold determination to determine whether the operating channel is available for transmission.

[0149] Aspect 20 is the apparatus according to any one of aspects 15-19, further comprising: determining the operating channel as usable for transmission for each of the one or more transmit power levels.

[0150] Aspect 21 is the apparatus according to any one of aspects 15-20, further comprising: determining whether the operating channel is available for transmission of an energy level further determined based on the threshold for the one or more transmit power levels and measured within a sensing bandwidth.

[0151] Aspect 22 is the apparatus according to any one of aspects 15-21, further comprising: the at least one processor being further configured to disable the at least one energy sensing measurement if the base station transmits a broadcast signal during the sensing bandwidth.

[0152] Aspect 23 is the apparatus according to any one of aspects 15-22, further comprising: the at least one energy sensing measurement comprising a plurality of energy sensing measurements measured on different subbands of the operating channel.

[0153] Aspect 24 is the apparatus according to any one of aspects 15-23, further comprising: identifying a maximum transmit power level for each of the different sub-bands to determine whether the operating channel is available for transmission for each of the different sub-bands.

[0154] Aspect 25 is the apparatus according to any one of aspects 15-24, further comprising: for each subband with a transmit power level not exceeding the maximum transmit power level, the operating channel can be used for transmission.

[0155] Aspect 26 is a method for implementing wireless communication in any of aspects 15-25.

[0156] Aspect 27 is a device for wireless communication, which includes units for implementing any aspect of aspects 15-25.

[0157] Aspect 28 is a computer-readable medium storing computer-executable code, wherein when the code is executed by a processor, the processor implements any of aspects 15-25.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor coupled to the memory, and configured to: Perform at least one energy sensing measurement on the operating channel, wherein the at least one energy sensing measurement includes multiple energy sensing measurements simultaneously measured on different subbands of the operating channel; Whether the operating channel is available for transmission is determined based on a threshold determination for one or more transmit power levels, wherein a corresponding maximum transmit power level is identified for each sub-band of the different sub-bands to determine whether the operating channel is available for transmission for each sub-band of the different sub-bands, wherein the operating channel is available for transmission for each sub-band at a transmit power level not exceeding the corresponding maximum transmit power level; and Transmission is performed on the operating channel when it is determined that the operating channel is available for transmission at a transmit power level not exceeding the corresponding maximum transmit power level for each subband.

2. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor.

3. The apparatus according to claim 1, wherein, The operating channel is determined to be unusable for transmissions at a transmit power level greater than the corresponding maximum transmit power level for each subband.

4. The apparatus according to claim 1, wherein, The at least one energy sensing measurement includes the energy level measured on the operating channel within the sensing bandwidth.

5. The apparatus according to claim 1, wherein, The at least one processor is further configured to: If the base station transmits a broadcast signal during the sensing bandwidth, then the at least one energy sensing measurement is disabled.

6. A method for wireless communication at a user equipment (UE), comprising: Perform at least one energy sensing measurement on the operating channel, wherein the at least one energy sensing measurement includes multiple energy sensing measurements simultaneously measured on different subbands of the operating channel; Whether the operating channel is available for transmission is determined based on a threshold determination for one or more transmit power levels, wherein a corresponding maximum transmit power level is identified for each sub-band of the different sub-bands to determine whether the operating channel is available for transmission for each sub-band of the different sub-bands, wherein the operating channel is available for transmission for each sub-band at a transmit power level not exceeding the corresponding maximum transmit power level; and Transmission is performed on the operating channel when it is determined that the operating channel is available for transmission at a transmit power level not exceeding the corresponding maximum transmit power level for each subband.

7. The method according to claim 6, wherein, The operating channel is determined to be unusable for transmissions at a transmit power level greater than the corresponding maximum transmit power level for each subband.

8. The method according to claim 6, wherein, The at least one energy sensing measurement includes the energy level measured on the operating channel within the sensing bandwidth.

9. The method according to claim 6, further comprising: If the base station transmits a broadcast signal during the sensing bandwidth, then the at least one energy sensing measurement is disabled.

10. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor coupled to the memory, and configured to: Perform at least one energy sensing measurement on the operating channel, wherein the at least one energy sensing measurement includes multiple energy sensing measurements simultaneously measured on different subbands of the operating channel; Whether the operating channel is available for transmission is determined based on a threshold determination for one or more transmit power levels, wherein a corresponding maximum transmit power level is identified for each sub-band of the different sub-bands to determine whether the operating channel is available for transmission for each sub-band of the different sub-bands, wherein the operating channel is available for transmission for each sub-band at a transmit power level not exceeding the corresponding maximum transmit power level; and Transmission is performed on the operating channel when it is determined that the operating channel is available for transmission at a transmit power level not exceeding the corresponding maximum transmit power level for each subband.

11. The apparatus of claim 10, further comprising a transceiver coupled to the at least one processor.

12. The apparatus according to claim 10, wherein, The operating channel is determined to be unusable for transmissions at a transmit power level greater than the corresponding maximum transmit power level for each subband.

13. The apparatus according to claim 10, wherein, The at least one energy sensing measurement includes the energy level measured on the operating channel within the sensing bandwidth.

14. The apparatus according to claim 10, wherein, The at least one processor is further configured to: If the base station transmits a broadcast signal during the sensing bandwidth, the at least one energy sensing measurement is disabled.

15. A method for wireless communication at a base station, comprising: Perform at least one energy sensing measurement on the operating channel, wherein the at least one energy sensing measurement includes multiple energy sensing measurements simultaneously measured on different subbands of the operating channel; Whether the operating channel is available for transmission is determined based on a threshold determination for one or more transmit power levels, wherein a corresponding maximum transmit power level is identified for each sub-band of the different sub-bands to determine whether the operating channel is available for transmission for each sub-band of the different sub-bands, wherein the operating channel is available for transmission for each sub-band at a transmit power level not exceeding the corresponding maximum transmit power level; and Transmission is performed on the operating channel when it is determined that the operating channel is available for transmission at a transmit power level not exceeding the corresponding maximum transmit power level for each subband.

16. The method according to claim 15, wherein, The operating channel is determined to be unusable for transmissions at a transmit power level greater than the corresponding maximum transmit power level for each subband.

17. The method according to claim 15, wherein, The at least one energy sensing measurement includes the energy level measured on the operating channel within the sensing bandwidth.

18. The method of claim 15, further comprising: If the base station transmits a broadcast signal during the sensing bandwidth, the at least one energy sensing measurement is disabled.

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