Handling of sensing-communication conflicts in integrated sensing and communication systems

Abstract

Aspects presented herein may improve performance of an ISAC system by enabling one or more wireless devices to handle sensing-communication conflicts in the ISAC system. In one aspect, a first device transmits a first phase continuity reset indication to a second device after determining to change a transmit beam for a periodic sensing signal from a first beam to a second beam, the first beam being different from the second beam. The first device transmits a second phase continuity reset indication to the second device after determining that the transmit beam for the periodic sensing signal is to be changed from the second beam back to the first beam.

Description

Technical Field

[0001] The present disclosure relates generally to communication systems, and more particularly to positioning systems involving radio frequency (RF) sensing. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. 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.

[0003] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at city, country, region, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR may be based on 4G Long Term Evolution (LTE) standards. It is necessary to further improve 5G NR technology. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0004] The following presents a summary of one or more aspects in order to provide a basic understanding of these aspects. This summary is not a comprehensive review of all contemplated aspects. This summary is neither intended to identify the key or important elements of all aspects, nor to describe 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 a more detailed description presented later.

[0005] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus sends a first phase continuity reset indication to a second apparatus after determining to change a transmission beam for a periodic sensing signal from a first beam to a second beam, the first beam being different from the second beam. The apparatus sends a second phase continuity reset indication to the second apparatus after determining to change the transmission beam for the periodic sensing signal from the second beam back to the first beam.

[0006] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus receives a first phase continuity reset indication from a first apparatus indicating that a transmission beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam. The apparatus receives a second phase continuity reset indication from the first apparatus indicating that the transmission beam for the periodic sensing signal is changed from the second beam back to the first beam.

[0007] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus periodically sends a sensing signal to a second apparatus. The apparatus sends a sensing signal cancellation indication to the second apparatus after determining a certain number of opportunities to send a communication signal in place of the sensing signal, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent or has not been sent.

[0008] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus periodically receives a sensing signal from a first apparatus. The apparatus receives a sensing signal cancellation indication from the first apparatus, the sensing signal cancellation indication indicating a number of opportunities when the sensing signal will not be sent from the first apparatus or is not sent by the first apparatus.

[0009] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some exemplary features of one or more aspects. However, these features are only indicative of only some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0012] Figure 2B is a diagram illustrating an example of DL channels within a subframe according to various aspects of the present disclosure.

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

[0014] Figure 2D is a diagram illustrating an example of UL channels within a subframe according to various aspects of the present disclosure.

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

[0016] Figure 4 is a diagram illustrating an example of UE positioning based on reference signal measurement.

[0017] Figure 5 is a diagram illustrating an example of a radar signal (eg, a radar reference signal (RRS)) generated by a wireless device according to various aspects of the present disclosure.

[0018] Figure 6 is a diagram illustrating an example of shared components for integrated sensing and communication (ISAC) according to various aspects of the present disclosure.

[0019] Fig. 7A is a diagram illustrating an example co-located and cooperating radar system and communication system in accordance with various aspects of the present disclosure.

[0020] Figure 7B is a diagram illustrating an example co-design of a communication system and a radar system according to various aspects of the present disclosure.

[0021] Fig. 8A is a diagram illustrating an example single static sensing mode according to various aspects of the present disclosure.

[0022] Figure 8B is a diagram illustrating example dual-static / multi-static sensing modes according to various aspects of the present disclosure.

[0023] Fig. 9 is a diagram illustrating an example ISAC between a base station and two UEs in accordance with various aspects of the present disclosure.

[0024] Fig.10 is a communication flow illustrating an example of notifying a sensing device of a phase continuity interruption during a bi-static / multi-static sensing operation in accordance with various aspects of the present disclosure.

[0025] Fig.11 is a communication flow illustrating an example of notifying a sensing device regarding sensing signal cancellation during a dual-static / multi-static sensing operation according to various aspects of the present disclosure.

[0026] Fig.12 is a flow chart of a method of wireless communication.

[0027] Fig.13 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0028] Fig.14 is a flow chart of a method of wireless communication.

[0029] Fig.15 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0030] Fig.16 is a flow chart of a method of wireless communication.

[0031] Fig.17 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0032] Fig.18 is a flow chart of a method of wireless communication.

[0033] Fig.19 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities. DETAILED DESCRIPTION

[0034] Various aspects presented herein can improve the performance of an ISAC system. Various aspects presented herein can enable one or more wireless devices to handle sensing-communication conflicts in an ISAC system. For example, in one aspect of the present disclosure, a sensing device (e.g., a base station, a component of a base station, a sensing UE, etc.) can be notified (or made aware) of a potential interruption in Doppler frequency measurement during a sensing operation so that the sensing device can reset its Doppler frequency measurement. In another aspect of the present disclosure, a sensing device can be notified (or made aware) of the elimination of a sensing signal during a sensing operation, such as when a set of sensing signals is being preempted by a communication signal (e.g., a URLLC communication signal or a signal with a higher transmission priority). The sensing device can then stop the sensing operation or remove invalid sensing results to maintain the accuracy of the sensing operation.

[0035] The detailed description set forth below in conjunction with the accompanying drawings is a description of various configurations and does not represent the only configurations in which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid blurring these concepts.

[0036] Several aspects of the telecommunication system are also presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0037] As an example, an element or any part of an element or any combination of elements can be implemented as a "processing system", which includes 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, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic components, discrete hardware circuits, and other suitable hardware configured to perform various functions described throughout the present disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0038] Thus, in one or more example aspects, specific implementations and / or use cases, 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 codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media 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 these types of computer-readable media, or any other media that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0039] Although various aspects, specific implementations and / or use cases are described in this application by the illustration of some examples, additional or different aspects, specific implementations and / or use cases may be generated in many different arrangements and scenarios. The various aspects, specific implementations and / or use cases described herein can be implemented across many different platform types, devices, systems, shapes, sizes and packaging arrangements. For example, various aspects, specific implementations and / or use cases can be generated via integrated chip specific implementations and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment, artificial intelligence (AI) enabled devices, etc.). Although some examples may or may not be specifically for use cases or applications, the described examples may have a wide range of applicability. Various aspects, specific implementations and / or use cases may be in the range from chip-level or modular components to non-modular, non-chip-level specific implementations, and further to the range of aggregated, distributed or original equipment manufacturer (OEM) devices or systems in conjunction with one or more technologies herein. In some practical environments, the equipment combined with the various aspects and features described 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 necessarily include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.) The techniques described herein can be practiced in a wide variety of devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc.

[0040] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways using various components or constituent parts. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment (such as a base station (BS) or one or more units (or one or more components) that perform base station functionality) can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP), or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0041] A converged base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack that is physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit.

[0042] Base station operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which may enable flexibility in network design. Individual units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0043] Figure 1 1 is a diagram 100 illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 125 via an E2 link, or a non-real-time (non-RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CU 110 may communicate with one or more DUs 130 via corresponding midhaul links, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RU 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0044] Each of the units (i.e., CU 110, DU 130, RU 140, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive signals from one or more of the other units or send signals to one or more of the other units on a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive and / or send signals to one or more of the other units on a wireless transmission medium.

[0045] In some aspects, CU 110 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 110. CU 110 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 110 may be implemented to communicate with DU 130 for network control and signaling.

[0046] DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140. In some aspects, DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, etc.) at least in part according to a functional split (such as a functional split defined by 3GPP). In some aspects, DU 130 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 130 or with control functions hosted by CU 110.

[0047] The lower layer functions may be implemented by one or more RUs 140. In some deployments, the RU 140 controlled by the DU 130 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting such as lower layer functional splitting. In such an architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the DU 130 and CU 110 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0048] The SMO framework 105 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 110, DU 130, RU 140, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. Additionally, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0049] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or communicate with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0050] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via creation of RAN management policies (such as A1 policies).

[0051] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Therefore, the base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component is indicated by a dotted line to indicate that each component may or may not be included in the base station 102). The base station 102 provides an access point to the core network 120 for the UE 104. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). Small cells include femto cells, pico cells, and micro cells. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link between RU140 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to RU 140 and / or downlink (DL) (also known as forward link) transmission from RU 140 to UE 104. The communication link may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. For each carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum of up to Y MHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.) bandwidth. The carriers may be adjacent to each other or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0052] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0053] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, e.g., in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) prior to communication to determine whether a channel is available.

[0054] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0055] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz to 24.25 GHz). The frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore can effectively extend the characteristics of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz–71 GHz), FR4 (71 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0056] In view of the above, unless otherwise specified, if the term "sub-6 GHz" or the like is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specified, if the term "millimeter wave" or the like is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0057] The base station 102 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. The base station 102 may send a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also send a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of the base station 102 / UE 104. The transmit direction and receive direction of the base station 102 may be the same or may not be the same. The transmit direction and receive direction of the UE 104 may be the same or may not be the same.

[0058] The base station 102 may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a transceiver base station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), a network node, a network entity, a network equipment, or some other suitable term. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and a RU, or as a disaggregated base station including one or more of a CU, a DU, and / or a RU. A set of base stations that may include disaggregated base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0059] The core network 120 may include an access and mobility management function (AMF) 161, a session management function (SMF) 162, a user plane function (UPF) 163, a unified data management (UDM) 164, one or more location servers 168, and other functional entities. AMF 161 is a control node that handles signaling between UE 104 and the core network 120. AMF 161 supports registration management, connection management, mobility management, and other functions. SMF 162 supports session management and other functions. UPF 163 supports packet routing, packet forwarding, and other functions. UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identity handling, access authorization, and subscription management. One or more location servers 168 are illustrated as including a gateway mobile location center (GMLC) 165 and a location management function (LMF) 166. However, in general, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, the LMF 166, the position determination entity (PDE), the serving mobile location center (SMLC), the mobile positioning center (MPC), etc. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to calculate the location of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the location of the UE 104. Positioning the UE 104 may involve signal measurements, position estimation, and optional speed calculations based on these measurements. Signal measurements may be performed by the UE 104 and / or the serving base station 102. The measured signal can be based on a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite positioning / location systems), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), an NR enhanced cell ID (NR E-CID) method, an NR signal (e.g., multi-round trip time (multi-RTT), DL angle of departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle of arrival (UL-AoA) positioning) and / or one or more of other systems / signals / sensors.

[0060] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare equipment, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, clients, or some other suitable terms. In some scenarios, the term UE may also be applied to one or more supporting devices such as in a device constellation arrangement. One or more of these devices may access the network collectively and / or individually.

[0061] Reference again Figure 1 In some aspects, the base station 102 may be configured to send a first phase continuity reset indication to the second device after determining to change the transmission beam for the periodic sensing signal from the first beam to the second beam, the first beam being different from the second beam; and after determining to change the transmission beam for the periodic sensing signal from the second beam back to the first beam, send a second phase continuity reset indication to the second device via the sensing-communication configuration component 199. In some aspects, the base station 102 may be configured to periodically send a sensing signal to the second device; and after determining to send a communication signal in place of the sensing signal for a certain number of occasions, send a sensing signal cancellation indication to the second device via the sensing-communication configuration component 199, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent or is not sent. In some aspects, the UE 104 may be configured to receive from the first device a first phase continuity reset indication indicating that a transmit beam for a periodic sensing signal is changed from the first beam to a second beam, the first beam being different from the second beam, and to receive from the first device via the sensing signal processing component 198 a second phase continuity reset indication indicating that a transmit beam for a periodic sensing signal is changed from the second beam back to the first beam. In some aspects, the UE 104 may be configured to periodically receive a sensing signal from the first device, and to receive from the first device via the sensing signal processing component 198 a sensing signal cancellation indication indicating a number of opportunities when a sensing signal will not be transmitted from the first device or is not transmitted by the first device.

[0062] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL), or may be time division duplex (TDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL). Figure 2A , Figure 2C In the example provided, the 5GNR 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 may be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are both DL and both UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The slot format is configured for the UE by a received slot format indicator (SFI) (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0063] FIG. 2A to FIG. 2DThe frame structure is illustrated, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 subframes of the same size (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4 or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For a normal CP, each time slot may include 14 symbols, and for an extended CP, each time slot may include 12 symbols. The symbol on the DL may be a CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbol (also known as a single carrier frequency division multiple access (SC-FDMA) symbol) (for power-limited scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the CP and parameter set. The parameter set defines the subcarrier spacing (SCS) and effectively defines the symbol length / duration, which is equal to 1 / SCS.

[0064]

[0065] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Accordingly, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframe. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15kHz, and the subcarrier spacing for parameter set μ=4 is 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example of a normal CP is provided, where there are 14 symbols per slot, and the parameter set μ=2, where there are 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 a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific parameter set and CP (normal or extended).

[0066] A resource grid may be used to represent the frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0067] like Figure 2A As illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) (indicated as R for a particular configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0068] Figure 2B Examples of various DL channels within a subframe of a frame are illustrated. A physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within a BWP may 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 a PDCCH monitoring opportunity on a CORESET, wherein the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the 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 grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information such as system information blocks (SIBs) that are not sent via the PBCH, and paging messages.

[0069] like Figure 2CAs illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0070] Figure 2D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position 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) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0071] Figure 3375. The Controller / Processor 375 is a block diagram of a base station 310 in an access network communicating with a UE 350. In the DL, Internet Protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of 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 functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0072] The transmit (TX) processor 316 and receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then combined using an 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 estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel condition feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier with a corresponding spatial stream for transmission.

[0073] At the UE 350, each receiver 354Rx receives a signal through its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbol on each subcarrier and the reference signal are recovered and demodulated by determining the signal constellation point most likely to be sent by the base station 310. These soft decisions can be based on the channel estimate calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 310. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0074] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0075] Similar to the functions described in conjunction with DL transmission performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with transmission of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0076] The TX processor 368 may use channel estimates derived by the channel estimator 358 from a reference signal or feedback sent by the base station 310 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via corresponding transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0077] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318Rx receives a signal through its corresponding antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to the RX processor 370.

[0078] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0079] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to combine Figure 1 The sensing signal instructs component 198 to perform various aspects.

[0080] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 The sensing-communication configuration component 199 combines various aspects.

[0081] Figure 4 4 is a diagram illustrating an example of UE positioning based on reference signal measurement. UE 404 may be at time T SRS_TX UL-SRS 412 is sent and at time T PRS_RX A DL positioning reference signal (PRS) (DL-PRS) 410 is received. TRP 406 may be at time T SRS_RX Receive UL-SRS 412 and at time T PRS_TX 410. UE 404 may receive DL-PRS 410 before transmitting UL-SRS 412, or may transmit UL-SRS 412 before receiving DL-PRS 410. In both cases, a positioning server (e.g., location server 168) or UE 404 may determine the UL-SRS 412 based on ||T SRS_RX –T PRS_TX |–|T SRS_TX –T PRS_RX || to determine RTT 414. Thus, multi-RTT positioning may utilize UE ERx-Tx time difference measurements (ie, |T SRS_TX –T PRS_RX |) and DL-PRS reference signal received power (RSRP) (DL-PRS-RSRP), and the measured TRP Rx-Tx time difference measurement (ie, |T SRS_RX –T PRS_TX|) and UL-SRS-RSRP. UE 404 measures UE Rx-Tx time difference measurement (and / or DL-PRS-RSRP of received signal) using assistance data received from positioning server, and TRP 402, 406 measures gNB Rx-Tx time difference measurement (and / or UL-SRS-RSRP of received signal) using assistance data received from positioning server. These measurements may be used at positioning server or UE 404 to determine RTT, which is used to estimate the position of UE 404. Other methods for determining RTT are possible, such as, for example, using DL-TDOA and / or UL-TDOA measurements.

[0082] DL-AoD positioning may utilize the measured DL-PRS-RSRP of downlink signals received from multiple TRPs 402, 406 at the UE 404. The UE 404 measures the DL-PRS-RSRP of the received signals using assistance data received from a positioning server, and the resulting measurements, along with the departure azimuth angle (A-AoD), departure zenith angle (Z-AoD), and other configuration information, are used to position the UE 404 relative to neighboring TRPs 402, 406.

[0083] DL-TDOA positioning may utilize DL reference signal time difference (RSTD) (and / or DL-PRS-RSRP) of downlink signals received from multiple TRPs 402, 406 at the UE 404. The UE 404 measures the DL RSTD (and / or DL-PRS-RSRP) of the received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to position the UE 404 relative to neighboring TRPs 402, 406.

[0084] UL-TDOA positioning may utilize the UL relative time of arrival (RTOA) (and / or UL-SRS-RSRP) of uplink signals sent from UE 404 at multiple TRPs 402, 406. TRPs 402, 406 measure the UL-RTOA (and / or UL-SRS-RSRP) of received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to estimate the position of UE 404.

[0085] UL-AoA positioning may utilize the measured azimuth angle of arrival (A-AoA) and zenith angle of arrival (Z-AoA) of uplink signals sent from the UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 measure the A-AoA and Z-AoA of the received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to estimate the position of the UE 404.

[0086] Additional positioning methods may be used to estimate the position of the UE 404, such as, for example, UE-side UL-AoD and / or DL-AoA. Note that data / measurements from various techniques may be combined in various ways to increase accuracy, determine and / or enhance certainty, supplement / complete measurements, and / or replace / provide missing information.

[0087] In addition to network-based UE positioning technology, wireless devices (e.g., base stations, components of base stations, UEs, etc.) may also be configured to include radar capabilities, which may be referred to as "radio frequency (RF) sensing" and / or "cellular-based RF sensing". For example, a wireless device may send a radar reference signal (RRS) and measure the RRS sent from one or more objects. Based at least in part on the measurement, the wireless device may determine or estimate the distance between the wireless device and the one or more objects. In another example, a first wireless device may also receive an RRS sent from a second wireless device, wherein the first wireless device may determine or estimate the distance between the first wireless device and the second wireless device based at least in part on the received RRS. Therefore, in some examples, RF sensing technology may be used for UE positioning and / or for assisting UE positioning. For the purposes of this disclosure, a device capable of performing RF sensing (e.g., sending and / or receiving an RRS for detecting an object or for estimating the distance between a device and an object) may be referred to as an "RF sensing node". For example, an RF sensing node may be a UE, a base station, a component of a base station, a TRP, a device capable of sending an RRS, and / or a device configured to perform radar functions, etc.

[0088] Figure 5 5 is a diagram illustrating an example radar signal (e.g., RRS) generated by an RF sensing node according to various aspects of the present disclosure. The RF sensing node 503 can detect the object 520 (e.g., the position, distance, and / or speed of the object 520 relative to the RF sensing node 503) by sending the RRS toward the object 520 and receiving the RRS reflected (e.g., bounced) from the object 520. In some examples, the object 520 can be a radar receiver or have the ability to receive and process the RRS.

[0089] In one example, the RRS may be a chirp signal including a frequency that varies linearly (e.g., with a frequency sweep) over a fixed time period (e.g., over a sweep time) by a modulated signal. For example, as shown by diagram 500, a transmitted chirp signal 502 may have a starting frequency at 504 of a sine wave. Subsequently, the frequency may gradually (e.g., linearly) increase over the sine wave until reaching the end (or highest) frequency at 506 of the sine wave, after which the frequency of the signal may return to the starting frequency as shown at 508, and another chirp signal 510 may be transmitted in the same manner. In other words, each chirp signal may include an increase (e.g., linearly) in frequency and a decrease in frequency, or vice versa (e.g., including a decrease in frequency followed by an increase in frequency), such that the RF sensing node 503 may transmit a chirp signal that sweeps over frequency. In some examples, such a chirp signal may also be referred to as a frequency modulated continuous wave (FMCW).

[0090] After a chirp signal (e.g., chirp signals 502, 510, 512, etc.) is transmitted by the RF sensing node 503, the transmitted chirp signal may reach the object 520 and be reflected back to the RF sensing node 503, such as shown by reflected chirp signals 514, 516, and 518, which may correspond to the transmitted chirp signals 502, 510, and 512, respectively. Because there may be a distance between the RF sensing node 503 and the object 520 and / or it may take time for the transmitted chirp signal to reach the object 520 and be reflected back to the RF sensing node 503, there may be a delay between the transmitted chirp signal and its corresponding reflected chirp signal. Since the delay may be proportional to the ranging between the RF sensing node 503 and the object 520 (eg, the farther the target, the greater the delay, and vice versa), the RF sensing node 503 may be able to measure or estimate the distance between the RF sensing node 503 and the object 520 based on the delay.

[0091] In some examples, the RF sensing node 503 may also measure the frequency difference between the transmitted chirp signal and the reflected chirp signal, which may also be proportional to the distance between the RF sensing node 503 and the object 520. In other words, since the frequency difference between the reflected chirp signal and the transmitted chirp signal increases with delay, and the delay is linearly proportional to the distance, the distance of the object 520 from the RF sensing node 503 may also be determined based on the frequency difference. Therefore, the reflected chirp signal from the object 520 may be mixed with the transmitted chirp signal and down-converted to generate a beat signal (f b), which beat signal may be linearly proportional to the range after demodulation. For example, the RF sensing node 503 may determine the beat signal 522 by mixing the transmitted chirp signal 502 with its corresponding reflected chirp signal 514. Although the example in the figure illustrates the use of FMCW waveform for RRS, the RF sensing node 503 may also use other types of radar waveforms for RRS.

[0092] Due to the increase in the amount of bandwidth (BW) allocated for cellular communication systems (e.g., 5G and above) and the increase in the number of applications (e.g., use cases) introduced with cellular communication systems, joint communication and RF sensing (which may also be referred to as integrated sensing and communication (ISAC) and / or joint communication-radar (JCR)) may become an important feature of cellular systems. For example, a wireless device (e.g., a base station, a component of a base station, a UE, a component of a UE, an RF sensing node, etc.) may be configured to send a communication signal (e.g., PDSCH, PUSCH, PSSCH, etc.) with a radar signal (e.g., RRS, FMCW signal, etc.) together or in close time (e.g., based on TDM, FDM, SDM, etc.). In addition, an OFDM waveform (or a variant thereof) may be used as a waveform for ISAC / JCR because the OFDM waveform may enable in-band multiplexing with other cellular reference signals and physical channels. Therefore, the radar signal may be multiplexed with the communication signal based on the OFDM waveform. For purposes of this disclosure, a wireless device that performs RF sensing based on an OFDM waveform or sends an RRS based on an OFDM waveform may be referred to as an "OFDM radar."

[0093] Figure 6 600 is a diagram illustrating an example of shared components for an ISAC in accordance with various aspects of the present disclosure. A wireless device may be configured to share its RF (and possibly baseband) hardware components and frequency bands for both sensing and communication to provide a cost and spectrum efficient design. In some examples, the ISAC may be used for macro sensing, such as weather monitoring, autonomous driving, dynamic mapping, low altitude airspace (e.g., unmanned aerial vehicles (UAVs)) management, and intruder detection. In other examples, the ISAC may be used for micro sensing, such as gesture recognition, vital sign detection, and high resolution imaging using THz. In addition, the ISAC may also provide sensing-assisted communications, where information obtained via sensing (e.g., whether there are obstacles in certain directions) may be used to improve communications, such as for beam management.

[0094] In some implementations, the ISAC system can be categorized as a co-located and cooperating radar system and communication system and a co-design of the communication system and the radar system. Fig. 7A700A is a diagram illustrating an example co-located and collaborative radar system and communication system according to various aspects of the present disclosure. For this type of ISAC system, some knowledge (e.g., transmission information / configuration) is shared between the communication aspect and the radar aspect of the system to improve the performance of the system without changing the core operation of the radar system and the communication system too much. For example, as shown by diagram 700A, each of the devices used by a first user (user A) and a second user (user B) may include a radar transmit (Tx) / receive (Rx) component capable of sending / receiving a radar reference signal (RSR) and a communication Tx / Rx component capable of sending / receiving a communication signal. The radar Tx / Rx component and the communication Tx / Rx component may communicate with each other to coordinate the transmission of radar signals and communication signals to other devices and / or the reception of radar signals and communication signals from other devices.

[0095] Figure 7B 700B is a diagram illustrating an example co-design of a communication system and a radar system according to various aspects of the present disclosure. For this type of ISAC system, as shown by diagram 700B, a common transmitter or receiver is used for both communication and radar functions. This type of system may specify a certain amount of modification in the transmission waveform generation or receiver processing of both or either of the radar system and the communication system. This type of ISAC system design may provide improved hardware and spectrum reuse. A communication-centric ISAC utilizing a single communication transmission hardware may be favored by some network implementations because it can support both high data rate communications and high resolution sensing. For example, as described above, an OFDM-based waveform may be used by a radar system for sensing purposes while remaining compatible with an OFDM-based communication system.

[0096] In some implementations, RF sensing can be categorized into two types of RF sensing modes: a single-static sensing mode and a dual-static / multi-static sensing mode (which may also be referred to as "single-static RF sensing" and "dual-static RF sensing," respectively). Fig. 8A 800A is a diagram illustrating an example single static sensing mode according to various aspects of the present disclosure. Under single static sensing, the transmitter (e.g., Tx antenna panel) and receiver (e.g., Rx antenna panel) of the RF sensor are such as co-located in the same wireless device (e.g., base station, component of base station, UE, component of UE, etc.). Therefore, the transmission and reception of radar signals can be performed by one device. In other words, one radar / sensor is configured to both transmit sensing signals and receive reflected sensing signals. The advantage of single static sensing is that the single static sensing may not specify Tx / Rx (transmitter / receiver) pairing / grouping. However, single static sensing may specify self-interference mitigation because the same wireless device is used to transmit both sensing signals and communication signals.

[0097] Figure 8B 800B is a diagram illustrating an example dual-static / multi-static sensing mode according to various aspects of the present disclosure. Under dual-static / multi-static sensing, the transmitter and receiver may be separate (e.g., on different wireless devices and / or locations). For example, a transmitter (e.g., a Tx antenna panel) of a first wireless device may transmit a sensing signal, and the sensing signal or a sensing signal reflected from one or more objects may be received by a receiver (e.g., an Rx antenna panel) of a second wireless device (e.g., a sensing base station, a sensing UE, etc.). An advantage of dual-static / multi-static sensing is that the dual-static / multi-static sensing may not specify self-interference mitigation. However, dual-static / multi-static sensing may specify Tx / Rx (transmitter / receiver) pairing / grouping. However, single-static sensing may specify self-interference mitigation because the same wireless device is used to transmit both sensing signals and communication signals.

[0098] Fig. 9 900 is a diagram illustrating an example ISAC between a base station and two UEs in accordance with various aspects of the present disclosure. For purposes of the present disclosure, a UE that communicates with another wireless device (such as receiving communication signals from a base station or another UE) may be referred to as a "communicating UE", while a UE that performs RF sensing (such as receiving sensing signals from another wireless device) may be referred to as a "sensing UE". Although this example shows a base station communicating with two UEs, this example is for illustration purposes only. Various aspects presented herein may also apply to transmissions from a UE to other wireless devices (e.g., a base station and a second UE, etc.).

[0099] In some scenarios, in dual static sensing (e.g., base station-UE dual static sensing), during Doppler measurements by periodic sensing signals at multiple opportunities, the sensing signal may conflict with a higher priority communication (e.g., URLLC) signal at some time opportunities. For example, the base station 902 may concurrently or temporally closely send a communication signal to the communication UE 904 (e.g., via a communication signal beam) and send a sensing signal to the sensing UE 906 (e.g., via a sensing signal beam). As shown at 908, the sensing signal or the reflected sensing signal may interfere with the reception of the communication signal at the communication UE 904, and / or the communication signal may interfere with the sensing operation at the sensing UE 906.

[0100] In one example, due to a small communication data payload (e.g., there are sufficient resources to send both the communication signal and the sensing signal in the transmission opportunity) or the non-co-location of the communication UE 904 and the sensing target 910, the base station 902 may send the sensing signal and the communication signal based on FDM (e.g., using the same Tx beam but different frequency bands) and / or based on SDM (e.g., using different Tx beams). On the other hand, due to a large communication data payload (e.g., there are not enough resources to send both the communication signal and the sensing signal in the transmission opportunity) and the co-location of the communication UE 904 and the sensing target 910, the base station 902 may not be able to send the sensing signal and the communication signal based on FDM and / or SDM.

[0101] In some examples, when the sensing UE 906 is performing Doppler frequency measurement to maintain phase continuity, interference generated from the communication signal may affect the Doppler frequency measurement. For example, when the base station 902 is capable of concurrently (e.g., based on FDM) transmitting a sensing signal and a communication signal, if the Tx beam used to transmit the sensing signal changes due to the communication signal transmission, the Doppler frequency measurement performed by the sensing UE 906 may not be able to continue. Therefore, the Doppler estimation performed by the sensing UE 906 may be specified / configured to restart. In other words, in order to maintain phase continuity during the Doppler frequency measurement, the Tx beam of the sensing signal at the base station 902 may be specified to be maintained.

[0102] Various aspects presented herein can improve the performance of an ISAC system. Various aspects presented herein can enable one or more wireless devices to handle sensing-communication conflicts in an ISAC system. For example, in one aspect of the present disclosure, a sensing device (e.g., a base station, a component of a base station, a sensing UE, etc.) can be notified (or made aware) of a potential interruption in Doppler frequency measurement during a sensing operation so that the sensing device can reset its Doppler frequency measurement. In another aspect of the present disclosure, a sensing device can be notified (or made aware) of the elimination of a sensing signal during a sensing operation, such as when a set of sensing signals is being preempted by a communication signal (e.g., a URLLC communication signal or a signal with a higher transmission priority). The sensing device can then stop the sensing operation or remove invalid sensing results to maintain the accuracy of the sensing operation.

[0103] Fig.101 is a communication flow 1000 illustrating an example of notifying a sensing device about a phase continuity interruption during a dual-static / multi-static sensing operation in accordance with various aspects of the present disclosure. The numbers associated with the communication flow 1000 do not specify a particular time order and are merely used as a reference for the communication flow 1000. Various aspects presented herein may enable a first device (such as a first base station) to send a phase continuity reset indication to a second device (e.g., a second base station or a sensing UE). Then, upon receiving the phase continuity reset indication, the wireless device may reset the Doppler frequency measurement of the wireless device to maintain the accuracy of the Doppler estimate.

[0104] At 1020, the first device 1002 (or the first apparatus or antenna panel) may configure the second device 1004 to periodically receive a sensing signal 1008 from the first device 1002. In one example, the first device 1002 may be a base station or a component of a base station, and the second device 1004 may be a UE, another base station or a component of another base station, etc. The sensing signal may be based on, for example, a combination of Figure 5 The FMCW signal described.

[0105] At 1022, after configuring the second device 1004 to receive the sensing signal 1008, the first device 1022 may transmit the sensing signal 1008 via a first transmit (Tx) beam for reception by the second device 1004 (or transmit toward a target and for reception by the second device 1004). For example, as shown at 1024, the first device 1002 may periodically transmit the sensing signal 1008 from the first time slot (time slot 1) to the Nth time slot.

[0106] During the transmission of the sensing signal 1008, the first device 1002 may be configured or scheduled to transmit a set of communication signals 1012 (e.g., URLLC signals or signals with higher priority), such as to the third device 1006 or to the second device 1004. For example, as shown at 1026, the first device 1002 may be scheduled to transmit the communication signal 1012 at time slot 5 and time slot 6 via the second Tx beam.

[0107] At 1026, if the first device 1002 determines that the transmit phase continuity may be disrupted and the communication signal 1012 may be transmitted concurrently with the sensing signal 1008 (e.g., based on FDM and / or based on SDM in the presence of multiple antenna panels), such as via a second Tx beam, the first device 1002 may send a phase continuity reset indication 1010 (e.g., a first phase continuity reset indication) to the second device 1004 to notify the second device 1004 of the potential / possible phase continuity interruption. In response, at 1028, the second device 1004 may reset the Doppler frequency measurement of the second device after receiving the phase continuity reset indication 1010.

[0108] At 1030, the first device 1002 may concurrently transmit the sensing signal 1008 and the communication signal 1012 via the second Tx beam for reception by the second device 1004 and / or the third device 1006. The transmission of the sensing signal 1008 and the communication signal 1012 may be based on FDM.

[0109] At 1032, after the communication signal 1012 is transmitted or after the first device 1002 determines to stop transmitting the communication signal 1012, the first device 1002 may transmit a phase continuity reset indication 1014 (e.g., a second phase continuity reset indication) to the second device 1004 to notify the second device 1004 of the potential / possible phase continuity interruption and / or switch the transmission of the sensing signal 1008 back to the first Tx beam. Similarly, at 1034, in response to the phase continuity reset indication 1014, the second device 1004 may again reset the Doppler frequency measurement of the second device.

[0110] At 1036 , the first device 1002 can resume periodically sending the sensing signal 1008 via the first Tx beam (eg, from slot 7 to slot N).

[0111] In one example, the first device 1002 may send the phase continuity reset indication 1010 and the phase continuity reset indication 1014 via downlink control information (DCI). In another example, the first device 1002 may send the phase continuity reset indication 1010 and the phase continuity reset indication 1014 to one UE using a cyclic redundancy check (CRC) scrambled with a dedicated radio network temporary identifier (RNTI), or to a group of UEs through a group RNTI.

[0112] In another aspect of the present disclosure, since transmitting the sensing signal 1008 together with the communication signal 1012 based on FDM may reduce the maximum transmit power of the sensing signal 1008 (e.g., the sensing signals in time slots 5 and 6 may have lower transmit power than other time slots), the first device 1002 may further transmit a transmit power change indication to the second device 1004 to notify the second device 1004 of the reduction in transmit power at time slots 5 and 6. In some examples, the first device 1002 may include the transmit power change indication in the phase continuity reset indication 1010 and / or the phase continuity reset indication 1014. Then, in response to the transmit power change indication, the second device 1004 may modify or adopt a more appropriate sensing measurement, such as by modifying the received power / gain.

[0113] Fig.111 is a communication flow 1100 illustrating an example of notifying a sensing device of a sensing signal cancellation during a dual-static / multi-static sensing operation according to various aspects of the present disclosure. The numbers associated with the communication flow 1100 do not specify a particular time order and are only used as a reference for the communication flow 1100. When one or more configured sensing resources are overlapped / preempted by a communication signal (e.g., a URLLC communication signal or a signal with a higher transmission priority), and there are insufficient resources to concurrently transmit the sensing signal and the communication signal at some transmission opportunities, the various aspects presented herein can enable a first device (such as a first base station) to send a sensing signal cancellation indication to a second device (e.g., a second base station or a sensing UE).

[0114] At 1120, the first device 1102 (or the first apparatus or antenna panel) may configure the second device 1104 to periodically receive a sensing signal 1108 from the first device 1102. In one example, the first device 1102 may be a base station or a component of a base station, and the second device 1104 may be a UE, another base station or a component of another base station, etc. The sensing signal may be based on, for example, a combination of Figure 5 The FMCW signal described.

[0115] At 1122, after configuring the second device 1104 to receive the sensing signal 1108, the first device 1122 can transmit the sensing signal 1108 for receipt by the second device 1104 (or transmit toward a target and for receipt by the second device 1104). For example, as shown at 1124, the first device 1102 can periodically transmit the sensing signal 1108 from the first time slot (time slot 1) to the Nth time slot.

[0116] During the transmission of the sensing signal 1108, the first device 1102 may be configured or scheduled to transmit or receive a set of communication signals 1112 (e.g., URLLC signals or UL / DL signals with higher priority), such as to or from the third device 1106 and / or the second device 1104. For example, as shown at 1126, the first device 1102 may be scheduled to transmit or receive the communication signal 1112 at time slot 5 and time slot 6. If the first device 1102 determines that the communication signal 1112 cannot be transmitted / received concurrently with the sensing signal 1108 (e.g., at time slot 5 and time slot 6), the first device 1102 may transmit a sensing signal cancellation indication to the second device 1104 to inform the second device 1104 that one or more sensing signals may be cancelled (e.g., not transmitted).

[0117] In one example, as shown at 1126, the first device 1102 may send a sensing signal cancellation indication 1140 before sending / receiving the communication signal 1112, wherein the sensing signal cancellation indication 1140 may indicate the number of sensing signal opportunities that are subsequently cancelled (e.g., two opportunities after time slot 4, sensing opportunities at time slot 5 and time slot 6, etc.). In response, at 1128, the second device 1104 may stop the sensing operation for the indicated number of opportunities after receiving the sensing signal cancellation indication 1140. For example, the second device 1104 may stop the sensing operation at time slot 5 and time slot 6. Then, at 1130, the first device 1102 may send / receive the communication signal 1112 to or from the second device 1104 and / or the third device 1106.

[0118] In another example, as shown at 1132, the first device 1102 may send a sensing signal cancellation indication 1144 after sending / receiving the communication signal 1112, wherein the sensing signal cancellation indication 1144 may indicate the number of sensing signal opportunities previously cancelled (e.g., two opportunities before time slot 7, sensing opportunities at time slot 5 and time slot 6, etc.). In response, at 1134, the second device 1104 may remove sensing results (e.g., invalid sensing results) for the indicated number of opportunities after receiving the sensing signal cancellation indication 1144. For example, the second device 1104 may remove the sensing results obtained at time slot 5 and time slot 6. Then, at 1136, the first device 1102 may resume sending the sensing signal 1108 (e.g., from time slot 7 to time slot N).

[0119] In one example, the first device 1102 may send the sensing signal cancellation indication 1140 / 1144 via downlink control information (DCI). In another example, the first device 1102 may send the sensing signal cancellation indication 1140 / 1144 to one UE using a CRC scrambled with a dedicated RNTI, or to a group of UEs via a group RNTI.

[0120] Fig.12 1200 is a flow chart of a method of wireless communication. The method may be performed by a first device (e.g., base station 102, 902; first device 1002; network entity 1302). At 1202, the first device may send a first phase continuity reset indication to a second device after determining to change a transmission beam for a periodic sensing signal from a first beam to a second beam, the first beam being different from the second beam, such as in combination with Fig.10For example, at 1026, the first device 1002 may send a phase continuity reset indication 1010 to the second device 1004 after determining to change the transmission beam for the periodic sensing signal 1008 from the first Tx beam to the second Tx beam, wherein the first beam is different from the second beam. The sending of the phase continuity reset indication may be performed by, for example Fig.13 The sensing-communication configuration component 199 and / or the transceiver 1346 of the network entity 1302 in is executed.

[0121] In one example, the first device may periodically send a sensing signal to the second device via the first beam before sending the first phase continuity reset indication. In this example, the first device may configure the second device to periodically receive the sensing signal from the first device, and the configuration is performed before periodically sending the sensing signal to the second device.

[0122] In another example, the first device may concurrently send a sensing signal to the second device and a communication signal to the third device through the second beam after sending the first phase continuity reset indication. In this example, the sensing signal and the communication signal may be FDMed within the second beam. In this example, the first device may determine to stop sending the communication signal to the third device, wherein the second phase continuity reset indication may be sent based on the determination to stop sending the communication signal to the third device.

[0123] At 1204, the first device may send a second phase continuity reset indication to the second device after determining to change the transmission beam for the periodic sensing signal from the second beam back to the first beam, such as in conjunction with Fig.10 For example, at 1032, the first device 1002 may send a phase continuity reset indication 1014 to the second device 1004 after determining to change the transmission beam for the periodic sensing signal 1008 from the second Tx beam back to the first Tx beam. The sending of the phase continuity reset indication may be performed by, for example Fig.13 The sensing-communication configuration component 199 and / or the transceiver 1346 of the network entity 1302 in is executed.

[0124] In one example, the first device may periodically send a sensing signal to the second device through the first beam after sending the second phase continuity reset indication.

[0125] In another example, the first phase continuity reset indication and the second phase continuity reset indication may be sent via DCI.

[0126] In another example, the first phase continuity reset indication and the second phase continuity reset indication may be sent using a CRC scrambled based on the RNTI.

[0127] In another example, the first phase continuity reset indication may be sent concurrently with the indication that the transmit power for the sensing signal is being changed.

[0128] Fig.13 1300 is a diagram illustrating an example of a hardware implementation for a network entity 1302. The network entity 1302 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1302 may include at least one of a CU 1310, a DU 1330, or a RU 1340. For example, depending on the layer functionality handled by the sensing-communication configuration component 199, the network entity 1302 may include a CU 1310; both a CU 1310 and a DU 1330; each of the CU 1310, the DU 1330, and the RU 1340; the DU 1330; both a DU 1330 and a RU 1340; or a RU 1340. The CU 1310 may include a CU processor 1312. The CU processor 1312 may include an on-chip memory 1312'. In some aspects, the CU 1310 may also include an additional memory module 1314 and a communication interface 1318. CU 1310 communicates with DU 1330 via a midhaul link, such as an F1 interface. DU 1330 may include a DU processor 1332. DU processor 1332 may include on-chip memory 1332'. In some aspects, DU 1330 may also include an additional memory module 1334 and a communication interface 1338. DU 1330 communicates with RU 1340 via a fronthaul link. RU 1340 may include a RU processor 1342. RU processor 1342 may include on-chip memory 1342'. In some aspects, RU 1340 may also include an additional memory module 1344, one or more transceivers 1346, an antenna 1380, and a communication interface 1348. RU 1340 communicates with UE 104. On-chip memory 1312', 1332', 1342' and additional memory modules 1314, 1334, 1344 may each be considered a computer-readable medium / memory. Each computer readable medium / memory may be non-transitory. Each of processors 1312, 1332, 1342 is responsible for general processing, including executing software stored on the computer readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0129] As discussed above, the sensing-communication configuration component 199 is configured to send a first phase continuity reset indication to the second device after determining to change the transmit beam for the periodic sensing signal from the first beam to the second beam, the first beam being different from the second beam; and send a second phase continuity reset indication to the second device after determining to change the transmit beam for the periodic sensing signal from the second beam back to the first beam. The sensing-communication configuration component 199 may be located within one or more processors of one or more of the CU 1310, the DU 1330, and the RU 1340. The sensing-communication configuration component 199 may be one or more hardware components that are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. The network entity 1302 may include a variety of components configured for various functions. In one configuration, the network entity 1302 includes a component for sending a first phase continuity reset indication to a second device after determining that a transmit beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam; and a component for sending a second phase continuity reset indication to the second device after determining that the transmit beam for a periodic sensing signal is changed from the second beam back to the first beam.

[0130] In one configuration, the network entity 1302 further includes means for periodically sending a sensing signal to the second device via the first beam prior to sending the first phase continuity reset indication.

[0131] In another configuration, the network entity 1302 further includes means for configuring the second device to periodically receive the sensing signal from the first device, the configuring being performed before periodically sending the sensing signal to the second device.

[0132] In another configuration, the network entity 1302 further includes a component for concurrently sending a sensing signal to the second device and a communication signal to the third device through the second beam after sending the first phase continuity reset indication. In this configuration, the sensing signal and the communication signal are FDMed within the second beam. In this configuration, the network entity 1302 further includes a component for determining to stop sending the communication signal to the third device, wherein the second phase continuity reset indication is sent based on the determination to stop sending the communication signal to the third device.

[0133] In another configuration, the network entity 1302 further includes means for periodically sending a sensing signal to the second device through the first beam after sending the second phase continuity reset indication.

[0134] In another configuration, the first phase continuity reset indication and the second phase continuity reset indication are sent via DCI.

[0135] In another configuration, the first phase continuity reset indication and the second phase continuity reset indication are sent using a CRC scrambled based on the RNTI.

[0136] The means may be a sensing-communication configuration component 199 of the network entity 1302 configured to perform the functions recited by the means. As described above, the network entity 1302 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the means may be a TX processor 316, an RX processor 370, and / or a controller / processor 375 configured to perform the functions recited by the means.

[0137] Fig.14 1400 is a flow chart of a method of wireless communication. The method may be performed by a second device (e.g., UE 104; sensing UE 906; second device 1004; device 1504). At 1402, the second device may receive a first phase continuity reset indication from a first device indicating that a transmission beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam, such as in combination with Fig.10 For example, at 1026, the second device 1004 may receive a phase continuity reset indication 1010 from the first device 1002, wherein the first beam is different from the second beam. The receipt of the phase continuity reset indication may be performed by, for example Fig.15 The sensing signal processing component 198 and / or the transceiver 1522 of the device 1504 are executed.

[0138] In one example, the second device may periodically receive a sensing signal from the first device through the first beam before receiving the first phase continuity reset indication. In such an example, the second device may receive from the first device a configuration for periodically receiving a sensing signal from the first device, the configuration being performed before periodically receiving a sensing signal from the first device.

[0139] In another example, the second device may receive a sensing signal from the first device through the second beam after receiving the first phase continuity reset indication.

[0140] At 1404, the second device may receive a second phase continuity reset indication from the first device indicating that the transmit beam for the periodic sensing signal is changed from the second beam back to the first beam, such as in conjunction with Fig.10 For example, at 1032, the second device 1004 may receive a phase continuity reset indication 1014 from the first device 1002. The receipt of the phase continuity reset indication may be performed by, for example Fig.15 The sensing signal processing component 198 and / or the transceiver 1522 of the device 1504 are executed.

[0141] In one example, the second device may periodically receive a sensing signal from the first device through the first beam after receiving the second phase continuity reset indication.

[0142] In another example, the first phase continuity reset indication and the second phase continuity reset indication may be received via DCI.

[0143] In another example, the first phase continuity reset indication and the second phase continuity reset indication may be received using a CRC scrambled based on the RNTI.

[0144] In another example, the first phase continuity reset indication may be received concurrently with an indication that the transmit power for the sensing signal is being changed by the first device.

[0145] In another example, the second device may reset the Doppler frequency measurement associated with the sensing signal after receiving at least one of the first phase continuity reset indication or the second phase continuity reset indication.

[0146] Fig.151500 is a diagram illustrating an example of a hardware implementation for an apparatus 1504. The apparatus 1504 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1504 may include a cellular baseband processor 1524 (also referred to as a modem) coupled to one or more transceivers 1522 (e.g., a cellular RF transceiver). The cellular baseband processor 1524 may include on-chip memory 1524'. In some aspects, the apparatus 1504 may further include one or more subscriber identity module (SIM) cards 1520 and an application processor 1506 coupled to a secure digital (SD) card 1508 and a screen 1510. The application processor 1506 may include on-chip memory 1506'. In some aspects, the device 1504 may further include a Bluetooth module 1512, a WLAN module 1514, an SPS module 1516 (e.g., a GNSS module), one or more sensor modules 1518 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial management unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio for positioning, and / or other technologies), an additional memory module 1526, a power source 1530, and / or a camera 1532. The Bluetooth module 1512, the WLAN module 1514, and the SPS module 1516 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1512, the WLAN module 1514, and the SPS module 1516 may include their own dedicated antennas and / or utilize an antenna 1580 for communication. The cellular baseband processor 1524 communicates with the UE 104 and / or with the RU associated with the network entity 1502 through the transceiver 1522 via one or more antennas 1580. The cellular baseband processor 1524 and the application processor 1506 may each include a computer-readable medium / memory 1524', 1506', respectively. The additional memory module 1526 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1524', 1506', 1526 may be non-transitory. The cellular baseband processor 1524 and the application processor 1506 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1524 / application processor 1506, enables the cellular baseband processor 1524 / application processor 1506 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 1524 / application processor 1506 when executing the software.The cellular baseband processor 1524 / application processor 1506 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1504 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1524 and / or the application processor 1506, while in another configuration, the device 1504 may be the entire UE (e.g., see. Figure 3 350) and includes additional modules of device 1504.

[0147] As discussed above, the sensing signal processing component 198 is configured to receive from the first device a first phase continuity reset indication indicating that the transmit beam for the periodic sensing signal is changed from the first beam to the second beam, the first beam being different from the second beam; and receive from the first device a second phase continuity reset indication indicating that the transmit beam for the periodic sensing signal is changed from the second beam back to the first beam. The sensing signal processing component 198 may be located within the cellular baseband processor 1524, the application processor 1506, or both the cellular baseband processor 1524 and the application processor 1506. The sensing signal processing component 198 may be one or more hardware components that are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. As shown, the device 1504 may include a variety of components configured for various functions. In one configuration, the device 1504 (and in particular the cellular baseband processor 1524 and / or the application processor 1506) includes a component for receiving a first phase continuity reset indication from the first device indicating that a transmit beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam; and a component for receiving a second phase continuity reset indication from the first device indicating that the transmit beam for the periodic sensing signal is changed from the second beam back to the first beam.

[0148] In another configuration, the device 1504 further includes a component for periodically receiving a sensing signal from the first device through the first beam before receiving the first phase continuity reset indication. In this configuration, the device 1504 further includes a component for receiving a configuration for periodically receiving a sensing signal from the first device from the first device, the configuration being performed before periodically receiving the sensing signal from the first device.

[0149] In another configuration, the device 1504 further includes means for receiving a sensing signal from the first device through the second beam after receiving the first phase continuity reset indication.

[0150] In another configuration, the device 1504 further includes means for periodically receiving a sensing signal from the first device through the first beam after receiving the second phase continuity reset indication.

[0151] In another configuration, the first phase continuity reset indication and the second phase continuity reset indication are received via DCI.

[0152] In another configuration, the first phase continuity reset indication and the second phase continuity reset indication are received using a CRC scrambled based on the RNTI.

[0153] In another configuration, the first phase continuity reset indication is received concurrently with the indication that the transmit power for the sensing signal is being changed by the first device.

[0154] In another configuration, the apparatus 1504 further includes means for resetting a Doppler frequency measurement associated with the sensing signal upon receiving at least one of the first phase continuity reset indication or the second phase continuity reset indication.

[0155] The means may be the sensing signal processing component 198 of the device 1504 configured to perform the functions recited by the means. As described above, the device 1504 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.

[0156] Fig.16 1600 is a flow chart of a method of wireless communication. The method may be performed by a first device (eg, base station 102, 902; first device 1102; network entity 1702). At 1602, the first device may periodically send a sensing signal to a second device, such as in conjunction with Fig.11 For example, at 1112, the first device 1102 may periodically send a sensing signal 1108 to the second device 1104. The sending of the sensing signal may be performed by, for example Fig.17 The sensing-communication configuration component 199 and / or the transceiver 1746 of the network entity 1702 in is executed.

[0157] At 1604, the first device may send a sensing signal cancellation indication to the second device after determining that a communication signal is sent in place of a sensing signal for a certain number of times, the sensing signal cancellation indication indicating the number of times that the sensing signal will not be sent or was not sent, such as in conjunction with Fig.11For example, at 1126 or 1132, the first device 1102 may send a sensing signal cancellation indication 1140 or a sensing signal cancellation indication 1144 indicating the number of times when the sensing signal will not be sent or is not sent to the second device 1104. The sending of the sensing signal cancellation indication may be performed by, for example Fig.17 The sensing-communication configuration component 199 and / or the transceiver 1746 of the network entity 1702 in is executed.

[0158] In one example, the first device may send a communication signal to the third device after sending a sensing signal cancellation indication indicating the number of subsequent occasions when the sensing signal will not be sent.

[0159] In another example, the first device may send a communication signal to the third device before sending a sensing signal cancellation indication indicating the number of previous occasions when the sensing signal was not sent.

[0160] In another example, the first device may periodically send a sensing signal to the second device after the number of opportunities.

[0161] In another example, the sensing signal cancellation indication may be sent through DCI.

[0162] In another example, the sensing signal cancellation indication may be sent using a CRC scrambled based on the RNTI.

[0163] Fig.171700 is a diagram illustrating an example of a hardware implementation for a network entity 1702. The network entity 1702 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1702 may include at least one of a CU 1710, a DU 1730, or a RU 1740. For example, depending on the layer functionality handled by the sensing-communication configuration component 199, the network entity 1702 may include a CU 1710; both a CU 1710 and a DU 1730; each of the CU 1710, the DU 1730, and the RU 1740; the DU 1730; both a DU 1730 and a RU 1740; or a RU 1740. The CU 1710 may include a CU processor 1712. The CU processor 1712 may include an on-chip memory 1712'. In some aspects, the CU 1710 may further include an additional memory module 1714 and a communication interface 1718. CU 1710 communicates with DU 1730 via a midhaul link, such as an F1 interface. DU 1730 may include a DU processor 1732. DU processor 1732 may include on-chip memory 1732'. In some aspects, DU 1730 may further include an additional memory module 1734 and a communication interface 1738. DU 1730 communicates with RU 1740 via a fronthaul link. RU 1740 may include a RU processor 1742. RU processor 1742 may include on-chip memory 1742'. In some aspects, RU 1740 may further include an additional memory module 1744, one or more transceivers 1746, an antenna 1780, and a communication interface 1748. RU 1740 communicates with UE 104. On-chip memory 1712', 1732', 1742' and additional memory modules 1714, 1734, 1744 can each be considered as a computer-readable medium / memory. Each computer-readable medium / memory can be non-transitory. Each of processors 1712, 1732, 1742 is responsible for general processing, including executing software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor, enables the processor to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the processor when executing the software.

[0164] As discussed above, the sensing-communication configuration component 199 is configured to periodically send a sensing signal to the second device; and after determining that a communication signal is sent in place of the sensing signal for a certain number of opportunities, send a sensing signal cancellation indication to the second device, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent or is not sent. The sensing-communication configuration component 199 may be located within one or more processors of one or more of the CU 1710, the DU 1730, and the RU 1740. The sensing-communication configuration component 199 may be one or more hardware components that are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. The network entity 1702 may include a variety of components configured for various functions. In one configuration, the network entity 1702 includes a component for periodically sending a sensing signal to the second device; and a component for sending a sensing signal cancellation indication to the second device after determining that a communication signal is sent instead of the sensing signal for a certain number of times, the sensing signal cancellation indication indicating the number of times the sensing signal will not be sent or is not sent.

[0165] In another configuration, the network entity 1702 further includes means for sending a communication signal to the third device after sending the sensing signal cancel indication indicating the number of subsequent occasions at which the sensing signal is not to be sent.

[0166] In another configuration, the network entity 1702 further includes means for sending a communication signal to the third device before sending a sensing signal cancellation indication indicating the number of previous occasions when the sensing signal was not sent.

[0167] In another configuration, the network entity 1702 further includes means for periodically sending a sensing signal to the second device after the number of occasions.

[0168] In another configuration, the sensing signal cancellation indication is sent via DCI.

[0169] In another configuration, the sensing signal cancellation indication is sent using a CRC scrambled based on the RNTI.

[0170] The means may be a sensing-communication configuration component 199 of the network entity 1702 configured to perform the functions recited by the means. As described above, the network entity 1702 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the means may be a TX processor 316, an RX processor 370, and / or a controller / processor 375 configured to perform the functions recited by the means.

[0171] Fig.18 1800 is a flow chart of a method of wireless communication. The method may be performed by a second device (eg, UE 104; sensing UE 906; second device 1104; device 1904). At 1802, the second device may periodically receive a sensing signal from a first device, such as in combination with Fig.11 For example, at 1112, the second device 1104 may periodically receive a sensing signal 1108 from the first device 1102. The sensing signal may be received by, for example Fig.19 The sensing signal processing component 198 and / or the transceiver 1922 of the device 1904 are executed.

[0172] At 1804, the second device may receive a sensing signal cancellation indication from the first device, the sensing signal cancellation indication indicating a number of opportunities when a sensing signal will not be sent from the first device or is not sent by the first device, such as in conjunction with Fig.11 For example, at 1126 or 1132, the second device 1104 may receive a sensing signal cancellation indication 1140 or a sensing signal cancellation indication 1144 from the first device 1102 indicating the number of times when the sensing signal will not be sent or is not sent. The reception of the sensing signal may be performed by, for example Fig.19 The sensing signal processing component 198 and / or the transceiver 1922 of the device 1904 are executed.

[0173] In one example, the sensing signal cancellation indication may indicate the number of subsequent occasions at which the sensing signal will not be sent, and the second device may stop receiving the sensing signal for the indicated number of subsequent occasions.

[0174] In another example, the sensing signal cancellation indication may indicate the number of previous occasions when the sensing signal was not transmitted, and the second device may remove the sensing results of the sensing signal for the number of previous occasions based on the received sensing signal cancellation indication.

[0175] In another example, the second device may periodically receive the sensing signal from the first device after the number of opportunities.

[0176] In another example, the sensing signal cancellation indication is received through DCI.

[0177] In another example, the sensing signal cancellation indication is received using a CRC scrambled based on the RNTI.

[0178] Fig.191900 is a diagram illustrating an example of a hardware implementation for an apparatus 1904. The apparatus 1904 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1904 may include a cellular baseband processor 1924 (also referred to as a modem) coupled to one or more transceivers 1922 (e.g., a cellular RF transceiver). The cellular baseband processor 1924 may include on-chip memory 1924'. In some aspects, the apparatus 1904 may also include one or more subscriber identity module (SIM) cards 1920 and an application processor 1906 coupled to a secure digital (SD) card 1908 and a screen 1910. The application processor 1906 may include on-chip memory 1906'. In some aspects, the device 1904 may also include a Bluetooth module 1912, a WLAN module 1914, an SPS module 1916 (e.g., a GNSS module), one or more sensor modules 1918 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial management unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio for positioning, and / or other technologies), an additional memory module 1926, a power source 1930, and / or a camera 1932. The Bluetooth module 1912, the WLAN module 1914, and the SPS module 1916 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1912, the WLAN module 1914, and the SPS module 1916 may include their own dedicated antennas and / or communicate using an antenna 1980. The cellular baseband processor 1924 communicates with the UE 104 and / or with the RU associated with the network entity 1902 through the transceiver 1922 via one or more antennas 1980. The cellular baseband processor 1924 and the application processor 1906 may each include a computer-readable medium / memory 1924', 1906', respectively. The additional memory module 1926 may also be considered as a computer-readable medium / memory. Each computer-readable medium / memory 1924', 1906', 1926 may be non-transitory. The cellular baseband processor 1924 and the application processor 1906 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1924 / application processor 1906, enables the cellular baseband processor 1924 / application processor 1906 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 1924 / application processor 1906 when executing the software.The cellular baseband processor 1924 / application processor 1906 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1904 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1924 and / or the application processor 1906, while in another configuration, the device 1904 may be the entire UE (e.g., see. Figure 3 350) and includes additional modules of device 1904.

[0179] As discussed above, the sensing signal processing component 198 is configured to periodically receive sensing signals from the first device; and to receive a sensing signal cancellation indication from the first device, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent from the first device or is not sent by the first device. The sensing signal processing component 198 may be located within the cellular baseband processor 1924, the application processor 1906, or both the cellular baseband processor 1924 and the application processor 1906. The sensing signal processing component 198 may be one or more hardware components that are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. As shown, the device 1904 may include a variety of components configured for various functions. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes a component for periodically receiving a sensing signal from a first device; a component for receiving a sensing signal cancellation indication from the first device, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent from the first device or is not sent by the first device; a component for stopping receiving the sensing signal for the indicated number of subsequent opportunities; a component for removing the sensing result of the sensing signal for the number of previous opportunities based on the received sensing signal cancellation indication; and a component for periodically receiving the sensing signal from the first device after the number of opportunities. The component may be a sensing signal processing component 198 of the device 1904 configured to perform the functions recited by the component. As described above, the device 1904 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Therefore, in one configuration, the component may be a TX processor 368, an RX processor 356, and / or a controller / processor 359 configured to perform the functions recited by the component.

[0180] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart can be rearranged based on design preferences. In addition, some blocks can be combined or omitted. The attached method claims present the elements of each block in a sample order, but are not limited to the specific order or hierarchy presented.

[0181] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not limited to the various aspects described herein, but should be given the full scope consistent with the language claims. Unless specifically stated, reference to an element in the singular form does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not mean a direct temporal relationship or reaction. That is, these phrases, such as "when ...", do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless 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, where any such combination may contain one or more members of A, B, or C. A set should be interpreted as a set of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If the first device receives data from the second device or sends data to the second device, the data may be directly received / sent between the first device and the second device, or indirectly received / sent between the first device and the second device through a set of devices. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will later be known to a person of ordinary skill in the art are expressly incorporated herein by reference and are covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "mechanism", "element", "device", etc. cannot replace the word "component". Therefore, no claim element will be interpreted as a component plus function unless the element is explicitly stated using the phrase "component for..."

[0182] As used herein, the phrase "based on" should not be interpreted as referring to a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, a condition, a factor, etc.) should be interpreted as "based at least on A" unless specifically stated differently.

[0183] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein, but are not limiting.

[0184] Aspect 1 is a method for performing wireless communication at a first device, comprising: sending a first phase continuity reset indication to a second device after determining that a transmission beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam; and sending a second phase continuity reset indication to the second device after determining that the transmission beam for the periodic sensing signal is changed from the second beam back to the first beam.

[0185] Aspect 2 is a method according to aspect 1, further comprising: periodically sending the sensing signal to the second device through the first beam before sending the first phase continuity reset indication.

[0186] Aspect 3 is a method according to aspect 2, further comprising: configuring the second device to receive the sensing signal from the first device, the configuring being performed before periodically sending the sensing signal to the second device.

[0187] Aspect 4 is a method according to any one of aspects 1 to 3, further comprising: after sending the first phase continuity reset indication, concurrently sending the sensing signal to the second device and sending a communication signal to a third device through the second beam.

[0188] Aspect 5 is a method according to aspect 4, wherein the sensing signal and the communication signal are frequency division multiplexed within the second beam.

[0189] Aspect 6 is a method according to aspect 4, further comprising: determining to stop sending the communication signal to the third device, wherein the second phase continuity reset indication is sent based on the determination to stop sending the communication signal to the third device.

[0190] Aspect 7 is a method according to any one of aspects 1 to 6, further comprising: periodically sending the sensing signal to the second device through the first beam after sending the second phase continuity reset indication.

[0191] Aspect 8 is a method according to any one of aspects 1 to 7, wherein the first phase continuity reset indication and the second phase continuity reset indication are sent via DCI.

[0192] Aspect 9 is a method according to any one of aspects 1 to 8, wherein the first phase continuity reset indication and the second phase continuity reset indication are sent using CRC scrambled based on RNTI.

[0193] Aspect 10 is a method according to any one of aspects 1 to 9, wherein the first phase continuity reset indication is sent concurrently with an indication that the transmit power for the sensing signal is being changed.

[0194] Aspect 11 is an apparatus for wireless communication, wherein the apparatus is configured to implement any one of aspects 1 to 10.

[0195] Aspect 12 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 1 to 10.

[0196] Aspect 13 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1 to 10.

[0197] Aspect 14 is a method for performing wireless communication at a second device, comprising: receiving a first phase continuity reset indication from a first device indicating that a transmission beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam; and receiving a second phase continuity reset indication from the first device indicating that the transmission beam for the periodic sensing signal is changed from the second beam back to the first beam.

[0198] Aspect 15 is a method according to aspect 14, further comprising: periodically receiving the sensing signal from the first device through the first beam before receiving the first phase continuity reset indication.

[0199] Aspect 16 is a method according to any one of Aspect 14, further comprising: receiving, from the first device, a configuration for periodically receiving the sensing signal from the first device, the configuration being performed before periodically receiving the sensing signal from the first device.

[0200] Aspect 17 is a method according to any one of aspects 14 to 16, further comprising: receiving the sensing signal from the first device through the second beam after receiving the first phase continuity reset indication.

[0201] Aspect 18 is a method according to any one of aspects 14 to 17, further comprising: periodically receiving the sensing signal from the first device through the first beam after receiving the second phase continuity reset indication.

[0202] Aspect 19 is a method according to any one of aspects 14 to 18, wherein the first phase continuity reset indication and the second phase continuity reset indication are received through DCI.

[0203] Aspect 20 is a method according to any one of aspects 14 to 19, wherein the first phase continuity reset indication and the second phase continuity reset indication are received using a CRC scrambled based on the RNTI.

[0204] Aspect 21 is a method according to any one of aspects 14 to 20, wherein the first phase continuity reset indication is received concurrently with an indication that the transmit power for the sensing signal is being changed by the first device.

[0205] Aspect 22 is a method according to any one of aspects 14 to 21, further comprising: resetting the Doppler frequency measurement associated with the sensing signal upon receiving at least one of the first phase continuity reset indication or the second phase continuity reset indication.

[0206] Aspect 23 is an apparatus for wireless communication, wherein the apparatus is configured to implement any one of aspects 14 to 22.

[0207] Aspect 24 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 14 to 22.

[0208] Aspect 25 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 14 to 22.

[0209] Aspect 26: A method for performing wireless communication at a first device, comprising: periodically sending a sensing signal to a second device; and after determining a certain number of opportunities to send a communication signal instead of the sensing signal, sending a sensing signal cancellation indication to the second device, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent or is not sent.

[0210] Aspect 27 is a method according to aspect 26, further comprising: sending the communication signal to a third device after sending the sensing signal cancellation indication, the sensing signal cancellation indication indicating the number of subsequent opportunities at which the sensing signal will not be sent.

[0211] Aspect 28 is a method according to any one of aspects 26 and 27, further comprising: sending the communication signal to a third device before sending the sensing signal cancellation indication, the sensing signal cancellation indication indicating the number of previous occasions when the sensing signal was not sent.

[0212] Aspect 29 is a method according to any one of aspects 26 to 28, the method further comprising: periodically sending the sensing signal to the second device after the number of opportunities.

[0213] Aspect 30 is a method according to any one of aspects 26 to 29, wherein the sensing signal cancellation indication is sent through DCI.

[0214] Aspect 31 is a method according to any one of aspects 26 to 27, wherein the sensing signal cancellation indication is sent using a CRC scrambled based on the RNTI.

[0215] Aspect 32 is an apparatus for wireless communication, wherein the apparatus is configured to implement any one of aspects 26 to 31.

[0216] Aspect 33 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 26 to 31.

[0217] Aspect 34 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 26 to 31.

[0218] Aspect 35 is a method for performing wireless communication at a first device, comprising: periodically receiving a sensing signal from the first device; and receiving a sensing signal cancellation indication from the first device, the sensing signal cancellation indication indicating the number of times the sensing signal will not be sent from the first device or is not sent by the first device.

[0219] Aspect 36 is a method according to aspect 35, wherein the sensing signal cancellation indication indicates the number of subsequent occasions at which the sensing signal will not be sent, the method further comprising: stopping receiving the sensing signal for the indicated number of subsequent occasions.

[0220] Aspect 37 is a method according to any one of Aspects 35 and 36, wherein the sensing signal cancellation indication indicates the number of previous occasions when the sensing signal was not sent, and the method further includes: removing the sensing results of the sensing signal for the number of previous occasions based on the received sensing signal cancellation indication.

[0221] Aspect 38 is a method according to any one of aspects 35 to 37, further comprising: periodically receiving the sensing signal from the first device after the number of opportunities.

[0222] Aspect 39 is a method according to any one of aspects 35 to 38, wherein the sensing signal cancellation indication is received through DCI.

[0223] Aspect 40 is a method according to any one of aspects 35 to 39, wherein the sensing signal cancellation indication is received using a CRC scrambled based on the RNTI.

[0224] Aspect 41 is an apparatus for wireless communication, wherein the apparatus is configured to implement any one of aspects 35 to 40.

[0225] Aspect 42 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 35 to 40.

[0226] Aspect 34 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 35 to 40.

Claims

1. An apparatus for wireless communication at a first device, comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: sending a first phase continuity reset indication to a second device after determining to change a transmission beam for a periodic sensing signal from a first beam to a second beam, the first beam being different from the second beam; as well as A second phase continuity reset indication is sent to the second device after determining to change the transmission beam for the periodic sensing signal from the second beam back to the first beam.

2. The device according to claim 1, wherein the at least one processor is further configured to: periodically send the sensing signal to the second device through the first beam before sending the first phase continuity reset indication. 3 . The device according to claim 2 , wherein the at least one processor is further configured to: configure the second device to periodically receive the sensing signal from the first device, the configuring being performed before the periodically sending the sensing signal to the second device.

4. The device of claim 1, wherein the at least one processor is further configured to: concurrently send the sensing signal to the second device and send a communication signal to a third device through the second beam after sending the first phase continuity reset indication. 5 . The apparatus of claim 4 , wherein the sensing signal and the communication signal are frequency division multiplexed (FDM) within the second beam.

6. The device of claim 4, wherein the at least one processor is further configured to: determine to stop sending the communication signal to the third device, wherein the second phase continuity reset indication is sent based on the determination to stop sending the communication signal to the third device.

7. The device of claim 1, wherein the at least one processor is further configured to: periodically send the sensing signal to the second device through the first beam after sending the second phase continuity reset indication.

8. The apparatus according to claim 1, wherein the first phase continuity reset indication and the second phase continuity reset indication are transmitted through downlink control information (DCI).

9. The apparatus of claim 1, wherein the first phase continuity reset indication and the second phase continuity reset indication are sent using a cyclic redundancy check (CRC) scrambled based on a radio network temporary identifier (RNTI).

10. The apparatus of claim 1, wherein the first phase continuity reset indication is sent concurrently with an indication that a transmit power for the sensing signal is being changed.

11. An apparatus for wireless communication at a second device, comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: receiving, from a first device, a first phase continuity reset indication indicating that a transmission beam for a periodic sensing signal is changed from a first beam to a second beam, the first beam being different from the second beam; as well as A second phase continuity reset indication is received from the first device indicating that the transmit beam for the periodic sensing signal is changed from the second beam back to the first beam.

12. The apparatus of claim 11, wherein the at least one processor is further configured to periodically receive the sensing signal from the first apparatus via the first beam before receiving the first phase continuity reset indication. 13 . The device according to claim 12 , wherein the at least one processor is further configured to: receive, from the first device, a configuration for periodically receiving the sensing signal from the first device, the configuration being performed before periodically receiving the sensing signal from the first device.

14. The apparatus of claim 11, wherein the at least one processor is further configured to: receive the sensing signal from the first apparatus through the second beam after receiving the first phase continuity reset indication.

15. The device of claim 11, wherein the at least one processor is further configured to periodically receive the sensing signal from the first device through the first beam after receiving the second phase continuity reset indication.

16. The apparatus of claim 11, wherein the first phase continuity reset indication and the second phase continuity reset indication are received through downlink control information (DCI).

17. The apparatus of claim 11, wherein the first phase continuity reset indication and the second phase continuity reset indication are received using a cyclic redundancy check (CRC) scrambled based on a radio network temporary identifier (RNTI).

18. The apparatus of claim 11, wherein the first phase continuity reset indication is received concurrently with an indication that a transmit power for the sensing signal is being changed by the first apparatus.

19. The apparatus of claim 11, wherein the at least one processor is further configured to reset a Doppler frequency measurement associated with the sensing signal upon receiving at least one of the first phase continuity reset indication or the second phase continuity reset indication.

20. An apparatus for wireless communication at a first device, comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: periodically sending a sensing signal to a second device; as well as After determining a certain number of opportunities to send a communication signal instead of the sensing signal, a sensing signal cancellation indication is sent to the second device, the sensing signal cancellation indication indicating the number of opportunities when the sensing signal will not be sent or is not sent.

21. The apparatus of claim 20, wherein the at least one processor is further configured to: send the communication signal to a third apparatus after sending the sensing signal cancellation indication, the sensing signal cancellation indication indicating a number of subsequent occasions when the sensing signal will not be sent.

22. The device of claim 20, wherein the at least one processor is further configured to: send the communication signal to a third device before sending the sensing signal cancellation indication, the sensing signal cancellation indication indicating a number of previous occasions when the sensing signal was not sent.

23. The apparatus of claim 20, wherein the at least one processor is further configured to periodically send the sensing signal to the second apparatus after the number of opportunities.

24. The apparatus of claim 20, wherein the sensing signal cancellation indication is transmitted through downlink control information (DCI).

25. The apparatus of claim 20, wherein the sensing signal cancellation indication is transmitted using a cyclic redundancy check (CRC) scrambled based on a radio network temporary identifier (RNTI).

26. An apparatus for wireless communication at a second device, comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: periodically receiving a sensing signal from a first device; as well as A sensing signal cancellation indication is received from the first device, the sensing signal cancellation indication indicating a number of occasions when the sensing signal will not be sent from the first device or is not sent by the first device.

27. The apparatus of claim 26, wherein the sensing signal cancellation indication indicates a number of subsequent occasions when the sensing signal will not be sent, the at least one processor being further configured to stop receiving the sensing signal for the indicated number of subsequent occasions.

28. The apparatus of claim 26, wherein the sensing signal cancellation indication indicates a number of previous occasions when the sensing signal was not sent, and the at least one processor is further configured to remove the sensing results of the sensing signal for the number of previous occasions based on the received sensing signal cancellation indication.

29. The device of claim 26, wherein the at least one processor is further configured to periodically receive the sensing signal from the first device after the number of occasions.

30. The apparatus of claim 26, wherein the sensing signal cancellation indication is received through downlink control information (DCI) or using a cyclic redundancy check (CRC) scrambled based on a radio network temporary identifier (RNTI).

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