Wireless sensing method and device in communication sensing integrated system, and storage medium

Abstract

The embodiment of the invention provides a wireless sensing method and device in a communication sensing integrated system and a storage medium. A method includes receiving, by a processor of a device, one or more first perceptual reference signal (RS) based on a first RS configuration; sensing, by the processor, a target object based on the first RS; receiving, by the processor, one or more second RSs based on a second perceptual RS configuration, wherein the second perceptual RS configuration is determined by the device or received from another device upon a change in at least one of perceptual requirements and channel conditions; and sensing, by the processor, the target object based on the second RS. According to the invention, perception can be better carried out.

Description

Technical Field

[0001] The present invention relates generally to mobile communications, and more particularly to wireless sensing in an integrated sensing and communications (ISAC) system. Background Art

[0002] Unless otherwise indicated, the approaches described in this section are not prior art to the claims and are not admitted to be prior art by inclusion in this section.

[0003] Mobile communications and radar sensing have been developing independently for decades, and only recently has the coexistence, cooperation, and joint design of the two systems attracted interest. Motivations for this topic may include the use of millimeter waves for 5G and beyond leading to the occupation of adjacent frequency bands, which makes it possible to merge the frequency bands used by the two systems. In addition, with the increasing use of radar sensing in consumer devices and automotive applications, radar systems have entered the mass market. Given that jointly handling communication and perception on the same architecture or platform will be more cost-effective and less complex than two independent platforms, the concept of joint communication and perception (or ISAC) has been introduced, and it is envisioned that beyond 5G (B5G) or 6G systems will support perception services within the communication framework.

[0004] Since the topic is still under research, the new design of the air interface of ISAC has not yet been defined. For example, how to design the process for sensing signal configuration or scheduling, sensing resource allocation, and sensing with beam management has become an important issue for newly developed ISAC systems. Therefore, it is necessary to provide an appropriate solution to solve this problem. Summary of the invention

[0005] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce the concepts, key points, benefits, and advantages of the novel and non-obvious techniques described in the present invention. Selected implementations are further described in the detailed description below. Therefore, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

[0006] An embodiment of the present invention proposes a method for wireless perception in a communication-perception integrated system, including receiving, by a processor of a device, one or more first RSs based on a first perception reference signal RS configuration; sensing a target object based on the first RS; receiving, by the processor, one or more second RSs based on a second perception RS configuration, wherein the second perception RS configuration is determined by the device or received from another device when at least one of the perception requirements and channel conditions changes; and sensing the target object based on the second RS.

[0007] An embodiment of the present invention proposes a method for wireless perception in a communication-perception integrated system, comprising: transmitting, through a processor of a device, one or more first RSs related to a first perception RS configuration for sensing a target object; and transmitting, through the processor, one or more second RSs related to a second perception RS configuration for sensing the target object, wherein the second perception RS configuration is determined by the device, or transmitted to another device when at least one of the perception requirements and channel conditions changes.

[0008] An embodiment of the present invention provides a wireless sensing device in a communication sensing integrated system, comprising: a transceiver, used for wirelessly communicating with a wireless network during operation; and a processor, communicatively coupled to the transceiver, so that during operation, the processor performs the following operations: receiving one or more first RSs based on a first sensing RS configuration; sensing a target object based on the first RSs; receiving one or more second RSs based on a second sensing RS configuration, wherein the second sensing RS configuration is determined by the device or received from another device when at least one of a sensing requirement and a channel condition changes; and sensing the target object based on the second RSs.

[0009] An embodiment of the present invention provides a storage medium storing a program, which, when executed, enables a device to perform the steps of the wireless sensing method in the communication sensing integrated system of the present invention.

[0010] It is worth noting that although the description provided herein may be in the context of certain radio access technologies, networks, and network topologies, such as LTE, LTE Advanced, LTE Advanced Pro, 5G, NR, IoT, NB-IoT, IIoT, B5G, and 6G, the proposed concepts, schemes, and any variations / derivatives thereof may be implemented in, for, and by other types of radio access technologies, networks, and network topologies. Therefore, the scope of the present invention is not limited to the examples described herein.

[0011] By utilizing the present invention, better perception can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings contain information for further understanding of the present invention and are incorporated into and constitute a part of the present invention. These drawings show embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. It should be noted that the drawings are not necessarily drawn to scale, because in order to clearly illustrate the concepts of the present invention, some components may be shown out of proportion to the size in actual implementation.

[0013] Figure 1 is an example scenario of a communication environment according to an embodiment of the present invention.

[0014] Figure 2 It is an example scenario of sensing RS (re)configuration of single-stage sensing and multi-stage sensing according to an embodiment of the present invention.

[0015] Figure 3 is an example flow chart of a single-stage perception process according to an embodiment of the present invention.

[0016] Figure 4 is an example flow chart of a multi-stage perception process according to an embodiment of the present invention.

[0017] Figure 5 This is an example scenario of perceptual RS resource allocation according to an embodiment of the present invention.

[0018] Figure 6 This is an example scenario of RS-aware resource allocation according to another embodiment of the present invention.

[0019] Figure 7 This is an example scenario of RS-aware resource allocation according to another embodiment of the present invention.

[0020] Figure 8 This is an example scenario of RS-aware resource allocation according to another embodiment of the present invention.

[0021] Fig. 9 This is an example scenario of a single-stage perceived baseline beam management process according to an embodiment of the present invention.

[0022] Fig.10 This is an example scenario of a multi-stage perceived baseline beam management process according to an embodiment of the present invention.

[0023] Fig.11 TABLE 1 is an example scenario of various options for Tx beam and Rx beam settings according to an embodiment of the present invention.

[0024] Fig.12 This is an example scenario of a low-cost beam management process according to an embodiment of the present invention.

[0025] Fig.13is an example flow chart of a low-cost beam management process with multi-stage sensing according to an embodiment of the present invention.

[0026] Fig.14 is an example flow chart of a low-cost BM process with RSRP-based BM operation according to an embodiment of the present invention.

[0027] Fig.15 is an example scenario of a low-cost BM procedure with RSRP-based BM operation according to an embodiment of the present invention.

[0028] Fig.16 is an example scenario of a low-cost BM procedure with RSRP-based BM operation according to another embodiment of the present invention.

[0029] Fig.17 is an example scenario of a low-cost BM procedure with RSRP-based BM operation according to another embodiment of the present invention.

[0030] Fig.18 is an example scenario of RSRP-based BM operation using P1 to P3 according to an embodiment of the present invention.

[0031] Fig.19 This is an example scenario of using RSRP-based BM operation in combination with a baseline BM process according to an embodiment of the present invention.

[0032] Fig. 20 is an example scenario of using RSRP-based BM operation in combination with the baseline BM process according to another embodiment of the present invention.

[0033] Fig.21 is an example communication system according to an embodiment of the present invention.

[0034] Fig. 22 is an example process according to an embodiment of the present invention.

[0035] Fig.23 is an example process according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention discloses detailed embodiments and implementations of the claimed subject matter. However, it should be understood that the invented embodiments and implementations are merely illustrations of the claimed subject matter that can be implemented in various forms. Moreover, the present invention can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments and implementations set forth in the present invention. On the contrary, providing these exemplary embodiments and implementations is to make the description of the present invention comprehensive and complete, and to fully convey the scope of the present invention to those skilled in the art. In the following description, the details of known features and technologies may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

[0037] Overview

[0038] Embodiments of the present invention relate to various technologies, methods, schemes and / or solutions related to wireless sensing in an ISAC system. According to the present invention, a variety of possible solutions may be implemented individually or in combination. That is, although these possible solutions may be described separately below, two or more of these possible solutions may be implemented in one combination or in other combinations.

[0039] Figure 11 are example scenarios 110 and 120 of a communication environment according to an embodiment of the present invention, in which various solutions and schemes of the present invention can be implemented. Scenario 110 involves a transmitter / receiver 111 and one or more target objects 112 and 113, wherein the transmitter / receiver 111 supports monostatic sensing for any one of the target objects 112 and 113. In monostatic sensing, the transmitting unit and the receiving unit are usually located in the same location (e.g., within a single device) (or connected by optical fiber and as a distributed monostatic system), and therefore share a complete understanding of the transmission signal and clock. On the other hand, scenario 120 involves a transmitter 121, a receiver 122, and one or more target objects 123 to 125, wherein the transmitter 121 and the receiver 122 support bistatic sensing for any one of the target objects 123 to 125. In dual-station sensing, the transmitter 121 and the receiver 122 are typically located at different locations, the receiver 122 may have only partial knowledge of the transmitted signal, and some synchronization (e.g., clock synchronization) between the transmitter 121 and the receiver 122 may be required. Each of the transmitter / receiver 111, the transmitter 121, and the receiver 122 may be used as a user equipment (UE) or a base station (BS). For example, in one example, the transmitter 121 may be a BS and the receiver 122 may be a UE; or the transmitter 121 may be a UE and the receiver 122 may be a BS. In another example, the transmitter 121 and the receiver 122 may be two BSs or two UEs. The UE may include a smartphone, a smart watch, a personal digital assistant, a digital camera, a tablet, a laptop, a notebook, or an IoT / NB-IoT / IIoT device. The BS may include an evolved NodeB (eNB) in 4G LTE, a next-generation NB (gNB) or a transmission and reception point (TRP) in 5G NR, or a B5G / 6G NB. In such a communication environment, as described below, the transmitter / receiver 111 or the transmitter 121, the receiver 122 may implement various schemes related to wireless sensing in the ISAC system according to the present invention. It is worth noting that although various proposed schemes may be described separately or separately, in actual implementation, some or all of the proposed schemes may be used or implemented in combination. Of course, each proposed scheme may be used or implemented separately or separately.

[0040] According to certain schemes of the present invention, two types of sensing processes (including single-stage sensing process and multi-stage sensing process) are proposed for different sensing use cases so as to adaptively adjust the transmission (Tx) configuration and reception (Rx) operation according to changes in sensing requirements and / or channel conditions during sensing services.

[0041] Specifically, perception use cases can be divided into the following four scenarios: (i) long-term periodic detection of targets within a specified range and simultaneous estimation of relevant information about the targets (e.g., intrusion detection, unmanned aerial vehicles, etc.) The present invention relates to a method for providing a plurality of sensing services for the present invention, wherein the sensing service comprises the following: (i) providing a first sensing service for a first target, a second sensing service for a second ...

[0042] During the sensing service, the sensing requirements and / or channel conditions may change (e.g., due to a change in the sensing purpose). For example, the sensing purpose may change from target detection (e.g., in the first stage of a multi-stage sensing process) to target tracking or target refinement (e.g., in the second stage of a multi-stage sensing process). In this case, the target detection in the first stage may use exhaustive (coarse) beam scanning to cover the entire sensing area, and the second stage may use fewer (fine) beams based on the sensing results of the first stage (e.g., a rough sensing target location), which may be beneficial to resource utilization and reduce complexity. Another example is about link adaptation, that is, when the channel conditions change, the sensing reference signal (RS) may need to be reconfigured (e.g., in terms of RS style, bandwidth (BW), number of Tx beams, or beam direction) to ensure the sensing quality.

[0043] Specifically, the sensing requirements and channel conditions may include at least one of the following: sensing service type, sensing performance requirements, channel conditions, sensing resource limitations, transceiver complexity limitations, etc. The Tx configuration of the sensing RS may change according to changes in the sensing requirements and channel conditions, and the Rx operation corresponding to the Tx configuration may also change. The Tx configuration change may include changes in at least one of the following: sensing RS pattern (i.e., time domain and frequency domain pattern, sequence), number and interval of symbols (within the cyclic prefix interval (CPI)), RS period, sub-carrier spacing (SCS), BW, power of each resource element (RE), Tx beam width, number of Tx beams, and Tx beam direction. The Rx operation change may include changes in at least one of the following: sensing algorithms corresponding to different Tx configurations (e.g., two-dimensional fast Fourier transform (2D-FFT), multiple signal classification (MUSIC) and other sensing algorithms), Rx beam width, number of Rx beams, and Rx beam direction.

[0044] The change of the perception RS configuration can be achieved through radio resource control (RRC) reconfiguration or by activating / indicating a new perception RS (e.g., through RRC signaling, medium access control (MAC) control element (CE) or downlink control information (DCI)). In addition, similar to the use of the physical downlink control channel (PDCCH) to indicate the configuration of the physical downlink shared channel (PDSCH), DCI can be used to directly adjust / change the perception RS configuration.

[0045] Figure 2is an example scenario 200 of sensing RS (re)configuration for single-stage sensing and multi-stage sensing according to an embodiment of the present invention. Scenario 200 describes sensing RS (re)configuration and scheduling for different sensing use cases. Initially, all sensing RSs are configured (labeled as sensing RS#1), including periodic (P), semi-persistent (SP), and aperiodic (AP) sensing RSs. Next, in the continuous sensing service, the sensing RS may be reconfigured (e.g., using updated resource configuration) (labeled as RS#1') for link adaptation through RRC reconfiguration. In an example of single-stage sensing, RS#1 can be used for periodic sensing, and then RS#1 can be reconfigured as RS#1' for link adaptation and continue to be used for the same sensing purpose (i.e., periodic sensing). Alternatively, a new (P / SP / AP) sensing RS (labeled as RS#2) can be activated or indicated for a new sensing purpose through RRC, MAC-CE, or DCI. In one example of multi-stage sensing, RS#1 may be used for periodic sensing, then RS#1 may be reconfigured as RS#1' or RS#2 may be activated / indicated (via RRC / MAC-CE / DCI) for a different sensing purpose, or RS#2 may be activated or indicated for a new sensing purpose.

[0046] Figure 3 300 is an example flow chart of a single-stage sensing process according to an embodiment of the present invention. First, in step 310, the transmitter may transmit a sensing RS configuration to the receiver (e.g., via RRC signaling), and the receiver may configure the sensing RS based on the received sensing RS configuration. In step 320, the transmitter may activate certain sensing RSs for the receiver (e.g., via RRC signaling, MAC-CE, or DCI) and start sensing services, and the receiver may also activate the sensing RSs and start sensing services. In step 330, the transmitter may detect changes in sensing requirements and / or channel conditions. In step 340, in response to the detected changes, the transmitter may transmit an updated sensing RS configuration to the receiver (e.g., via RRC signaling), and reactivate the sensing RS to the receiver (e.g., via RRC signaling, MAC-CE, or DCI), and the receiver may reconfigure and reactivate the sensing RS based on the updated sensing RS configuration. In step 350, the transmitter and the receiver may continue to use the reconfigured sensing RS for sensing services, and the receiver may make corresponding changes to the Rx operation.

[0047] Figure 4 is an example flow chart 400 of a multi-stage perception process according to an embodiment of the present invention. Figure 3In steps 310 and 320, in steps 410 and 420, the sensing RS is configured and activated to start the sensing service of phase 1. In step 430, the transmitter and / or the receiver enters a new phase (e.g., phases 2 to N) corresponding to the new sensing requirements. In step 440, in response to entering the new phase, the transmitter may transmit an updated sensing RS configuration to the receiver (e.g., via RRC signaling), or activate a new sensing RS to the receiver (e.g., via RRC signaling, MAC-CE, or DCI), and the receiver may reconfigure the sensing RS or activate the new sensing RS based on the received sensing RS configuration. In step 450, both the transmitter and the receiver may start the new phase of sensing service using the reconfigured or newly activated sensing RS, and the receiver may make corresponding changes to the Rx operation.

[0048] According to certain aspects of the present invention, a sensing RS resource allocation for an ISAC system is proposed to achieve coexistence between the sensing RS and the communication signal. Specifically, the sensing RS can be time-division multiplexed (TDM) and / or frequency-division multiplexed (FDM) with the communication signal. In addition, or alternatively, the sensing RSs of different sensing stages (e.g., different sensing stages in multi-stage sensing) can also be TDM and / or FDM.

[0049] Several types of sensing RS resource allocation are described below. In the following examples, it is assumed that single-stage sensing and stage 1 of multi-stage sensing use periodic sensing RS, while other stages of multi-stage sensing use aperiodic sensing RS, but it should be noted that these sensing RS resource allocation types can be applied to P / SP / AP sensing RS.

[0050] Figure 5 5 is an example scenario 500 of cognitive RS resource allocation according to an embodiment of the present invention. Scenario 500 describes type 1 of cognitive RS resource allocation, where in stage 1 of single-stage sensing or multi-stage sensing, the cognitive RS is TDM with the communication signal, and the cognitive RS in stage 1 is TDM with the cognitive RS in stage 2.

[0051] Figure 6is an example scenario 600 of sensing RS resource allocation according to another embodiment of the present invention. Scenario 600 describes type 2 of sensing RS resource allocation, wherein in single-stage sensing or stage 1 of multi-stage sensing, the sensing RS is FDMed with the communication signal, and the sensing RS of stage 1 is TDMed and FDMed with the sensing RS of stage 2. In particular, the sensing RS of the second sensing stage is allocated on multiple component carriers (CCs) for multi-CC sensing. In addition, or alternatively, the beam management (BM) operations on the common CC and the sensing CC may be different, and separate BM operations may be required for the two CCs.

[0052] Figure 7 700 is an example scenario of sensing RS resource allocation according to another embodiment of the present invention. Scenario 700 describes type 3 of sensing RS resource allocation, wherein in single-stage sensing or stage 1 of multi-stage sensing, the sensing RS is TDM and FDM with the communication signal, and the sensing RS of stage 1 is TDM and FDM with the sensing RS of stage 2. In particular, the sensing RS of the second sensing stage is allocated on multiple CCs for multi-CC sensing.

[0053] Figure 8 8 is an example scenario 800 of sensing RS resource allocation according to another embodiment of the present invention. Scenario 800 describes type 4 of sensing RS resource allocation, in which the sensing RS of the first sensing stage is TDMed with the communication signal in sub6G (i.e., frequency range 1 (frequency range 1, FR1)), and the sensing RS of the first sensing stage is FDMed with the sensing RS of the second sensing stage. In particular, the sensing RS of the second sensing stage is allocated on millimeter wave (mmWave, i.e., frequency range 2 (frequency range 2, FR2)).

[0054] In terms of perception, the introduction of beam management not only provides Tx and Rx beamforming gains, but also allows scanning of targets within a three-dimensional (3D) perception area by Tx and Rx beam sweeping. Therefore, according to certain schemes of the present invention, a "baseline beam management process" for general perception beam management operations and a "low-cost beam management process" for enhanced beam management operations are proposed to effectively reduce perception resource utilization and computational complexity.

[0055] In general, the sensing RS can configure one or more Tx beams to cover the entire sensing area. The configuration of the number of Tx beams, beam width, and beam direction may depend on the frequency band used (e.g., sub6G, millimeter wave), the sensing area, and / or the required beamforming gain, etc. The configuration of the number of Rx beams, beam width, and beam direction may depend on the frequency band used (e.g., sub6G, millimeter wave), the required beamforming gain, the sensing accuracy requirements, and / or the Rx device capabilities, etc. For the baseline beam management process (e.g., in the absence of prior information about the correspondence between Tx beams and Rx beams), the receiver may perform an Rx beam scan on each Tx beam used by the transmitter and perform sensing operations on all beam pair links (BPL) at the same time (e.g., using 2D-FFT, MUSIC, or other sensing algorithms). The sensing results on all BPLs may then be integrated to determine information related to the target.

[0056] Fig. 9 This is an example scenario 900 of a baseline beam management process for single-stage sensing according to an embodiment of the present invention. Scenario 900 describes a sensing service based on periodic sensing RSs, each RS is associated with 4 Tx beams, and 4 symbols are allocated to each Tx beam. On the receiver side, each Tx beam uses 4 Rx beams (based on the beam book). That is, there are a total of 16 possible BPLs. During the sensing service, Tx beam scanning is performed with a shorter period to transmit the sensing RS, and Rx beam scanning is performed with a longer period to receive the sensing RS, so that each Rx beam can receive the sensing RS transmitted on all Tx beams. At the same time, during the sensing service, sensing operations are performed on all 16 BPLs (for example, using 2D-FFT) to obtain 16 sensing results, which are integrated according to a certain integration algorithm to determine information related to the target.

[0057] Fig.10 1 is an example scenario 1000 of a baseline beam management process for multi-stage sensing according to an embodiment of the present invention. Scenario 1000 describes different sensing services at different sensing stages, where stage 1 performs target detection based on periodic sensing RS#1 and stage 2 performs target tracking / refinement based on aperiodic sensing RS#2. The beam management operations and sensing operations of stage 1 are similar to those of stage 2. Fig. 9The single-stage sensing is the same as described above. In stage 2, the sensing RS#2 is associated with 3 fine Tx beams and has a quasi co-location (QCL) relationship with the beam management RS#1 (e.g., Tx beam #1 of RS#1), and the receiver side uses only one coarse Rx beam, which corresponds to Tx beam #1 based on the sensing result of stage 1. In addition, in stage 2, a sensing operation (e.g., using 2D-FFT) is performed on three BPLs (i.e., 3 fine Tx beams multiplied by 1 coarse Rx beam) to obtain 3 sensing results, which are integrated to determine information related to the target.

[0058] As described above, for multi-stage sensing, the configuration of the number of beams, beam width, and beam direction of the Tx beam and the Rx beam may be different in different sensing stages, because the beam management operation result of the previous stage may help determine the Tx beam configuration and Rx beam setting of the next stage. For example, the sensing RS of stage n (where n>1) may have a QCL relationship with the sensing RS of the previous stages (e.g., n-1, n-2, etc.), and / or the Rx beam used in stage n may be determined based on the beam management operation results of the previous stages (e.g., n-1, n-2, etc.). Fig.10 Various options for Tx beam and Rx beam settings for stage 2 are summarized in Table 1. It should be noted that, in general, the options in Table 1 can also be used for other stages (e.g., stage n, where n>2).

[0059]

[0060] Table 1

[0061] Fig.11 1 is an example scenario 1100 of various options of Tx beam and Rx beam settings as shown in Table 1 according to an embodiment of the present invention. Scenario 1100 describes options 1 to 4 from top to bottom. In option 1, finer beams are used only on the transmitter side, for example, multiple (e.g., 3) fine Tx beams and one coarse Rx beam for stage 2 sensing. In option 2, finer beams are used only on the receiver side, for example, one coarse Tx beam and multiple (e.g., 3) fine Rx beams for stage 2 sensing. In option 3, finer beams are used on both the transmitter side and the receiver side, for example, multiple (e.g., 3) fine Tx beams and multiple (e.g., 3) fine Rx beams for stage 2 sensing. In option 4, one coarse beam is used on each of the transmitter side and the receiver side, so the number of BPLs used for stage 2 sensing can be reduced from 16 BPLs to 1 BPL, which is selected based on the sensing result of stage 1, and since beam scanning is not required, sensing RS resources can also be reduced.

[0062] It is worth noting that the baseline beam management process may provide good sensing performance, but may cause a lot of RS resource utilization and high computational complexity due to trying all possible BPLs. To mitigate these costs, several designs of low-cost beam management processes are proposed, including a low-cost beam management process with transmitters and receivers with fixed positions and / or directions, a low-cost beam management process with multi-stage sensing, and a low-cost beam management process with beam management operations based on reference signal receiving power (RSRP) or signal-to-noise ratio (SNR).

[0063] Fig.12 is an example scenario 1200 of a low-cost beam management process according to an embodiment of the present invention, wherein the positions and directions of the transmitter and the receiver are fixed. Note that if the positions or directions of the transmitter and the receiver are not fixed (for example, the position and / or direction of the UE may be variable), it is necessary to perform sensing operations on all possible BPLs to cover the entire sensing area (to avoid missing the target). In contrast, if the positions and directions of the transmitter and the receiver are fixed (for example, BS-based dual-station sensing or single-station sensing), the spatial relationship between the transmit beam and the receive beam can be established / obtained in advance, so that the receiver does not need to try all receive beams for each transmit beam. Fig.12 In part (A), because the Rx and Tx beams with the same beam index have the same beam direction and beam width, Rx beams #0 to 2 correspond to Tx beams #0 to 2, respectively. Therefore, the receiver does not need to try Rx beams #1 and #2 for Tx beam #0 because their directions are different. Fig.12 In part (B), because the Tx beam beamwidth and the Rx beam beamwidth are different, the receiver can use Rx beam #0 for Tx beams #0 and #1, and use Rx beam #1 for Tx beams #2 and #3. That is, in this case, the relationship between the Tx beam and the Rx beam is allowed to be not a one-to-one mapping (for example, one Tx beam corresponds to multiple Rx beams, or one Rx beam corresponds to multiple Tx beams), as long as the paired transmit beam and Rx beam correspond spatially. In addition, the direction and order of the Tx beam and the Rx beam may need to be pre-defined and notified to the transmitter and receiver. In one example, the transmitter can send signaling to inform the receiver of the angle and beamwidth of each Tx beam, and the receiver can use this information to set the corresponding Rx beam.

[0064] Fig.131300 is an example flowchart of a low-cost beam management process with multi-stage sensing according to an embodiment of the present invention. First, in step 1310, stage 1 uses a coarse Tx beam and a coarse Rx beam to obtain coarse target information (i.e., sensing results about position, angle, BPL, etc.). Then, in stage 2, based on the sensing results of stage 1 (step 1320), fewer coarse transmit beams and coarse receive beams are used for target tracking, or fewer fine transmit and fine receive beams are used for target refinement (step 1330). Please note that because stage 1 sensing is based on coarse beams (i.e., beams with large beamwidths), stage 1 uses a smaller number of transmit and receive beams; because stage 2 sensing is based on coarse target information of stage 1, stage 2 uses a smaller number of transmit and receive beams. Therefore, compared with directly using many transmit and receive beam scans in a single-stage sensing process, RS resource utilization and computational complexity can be reduced.

[0065] Another design of a low-cost BM process is to insert an RSRP-based BM operation into the baseline BM process, or to replace certain stages of the baseline BM process. Specifically, the RSRP-based BM operation uses layer 1 (L1) RSRP / SNR or the SNR associated with the target (e.g., the perception SNR) as a metric to try to cover all possible BPLs in the entire perception area. RSRP-based BM operations are similar to BM operations in mobile communications, and they can be used to find candidate BPLs that cover the perception target. Based on the candidate BPLs, the subsequent baseline BM process can reduce RS resource utilization and computational complexity (e.g., configure fewer transmit beams, and each transmit beam knows the corresponding receive beam). More specifically, RS resource utilization may be reduced because the calculation of RSRP / SNR requires fewer symbols (e.g., 1 symbol), and therefore, the complexity of RSRP / SNR calculation is lower than the complexity of the perception operation (e.g., 2D-FFT).

[0066] It should be noted that the RSRP-based BM operation is based on the BM RS, which may be different from the sensing RS (because it does not require multiple symbols for coherent processing), but the present invention does not exclude the case where the sensing RS and the BM RS share the same RS (although this may not be the most efficient case). In some embodiments, the sensing BM RS may be shared with the communication BM RS because their operations are very similar. In some embodiments, the sensing BM RS may also be specially configured as an independent RS.

[0067] Similar to the BM operation in mobile communication, the RSRP-based BM operation may include P1, P2, and P3 for different purposes. For example, P1 may try all BPLs to find the best BPL; P2 may fix the receive beam to search for the best transmit beam; and P3 may fix the transmit beam to search for the best receive beam. Even so, there are still some differences between the RSRP-based BM operation and the BM operation in mobile communication. For some sensing modes (e.g., single-station sensing and BS-based dual-station sensing), the BM RS scheduling and BM result reporting process may not be involved.

[0068] Fig.14 1400 is an example flow chart of a low-cost BM process with RSRP-based BM operation according to an embodiment of the present invention. First, in step 1410, the receiver scans all possible BPLs and determines candidate BPLs based on L1 RSRP / SNR or perceived SNR. The candidate BPLs may include BPLs that can cover the target (e.g., BPLs with perceived SNR>threshold), all BPLs, or BPLs around the mobile communication BPL. In step 1420, the receiver notifies the transmitter of the candidate BPLs and maintains these BPLs locally. In step 1430, the transmitter configures the perceived RS based on the candidate BPLs, and the receiver uses the corresponding receive beam based on the BPL information maintained locally in the BM phase. The configured perceived RS should have a QCL relationship with the BM RS (or certain transmit beams) used in the BM phase.

[0069] Fig.15 It is an example scenario 1500 of a low-cost BM process with RSRP-based BM operation according to an embodiment of the present invention. Scenario 1500 describes possible Tx beam configurations and Rx beam settings in the BM phase and the sensing phase in the low-cost BM process with RSRP-based BM operation. In the RSRP-based BM phase, the RSRP-based BM operation is based on the sensing BM RS, such as in the P1 / P2 / P3 process in the communication BM operation, the candidate Tx-Rx BPL (including the BPL that can cover the target (e.g., the BPL with sensing SNR>threshold), or all BPLs, or the BPL around the mobile communication BPL) is obtained based on L1-RSRP / SNR or the SNR related to the target (e.g., the sensing SNR), and the receiver notifies the transmitter of the candidate BPL and maintains the candidate BPL locally. In the sensing phase (i.e., the baseline BM process), the transmitter configures the sensing RS based on the results of the BM phase (for example, the sensing RS may be configured with fewer Tx beams, or finer Tx beams (within the range of candidate coarse Tx beams obtained in the BM phase and configured to have a QCL relationship with the BMRS), and the receiver performs sensing operations on the configured sensing RS based on the locally maintained Rx beam (or finer Rx beam).

[0070] Fig.16 FIG. 16 is an example scenario 1600 of a low-cost BM process with RSRP-based BM operation according to another embodiment of the present invention. Fig.15 Similarly, the RSRP-based BM operation is based on the sensing BM RS, but in scenario 1600, the obtained candidate Tx-Rx BPL only includes BPLs around the mobile communication BPL. After the receiver notifies the transmitter of the candidate BPL and maintains the candidate BPL locally, the transmitter configures a sensing RS with fewer Tx and Rx beams, and the receiver performs a sensing operation on the configured sensing RS according to the locally maintained Rx beam.

[0071] However, using RSRP / SNR as an indicator for selecting candidate BPLs may have the possibility of missing the perceived target. Fig.17 1700 is an example scenario of a low-cost BM process with RSRP-based BM operation according to another embodiment of the present invention. In scenario 1700, it is assumed that line-of-sight (LoS) and interference clutter are very strong. The two strongest BPLs are {Tx beam 1, Rx beam 1} and {Tx beam 2, Rx beam 3}, while the best target-perceived BPLs are {Tx beam 1, Rx beam 2} and {Tx beam 2, Rx beam 2}. This inconsistency comes from the fact that RSRP / SNR cannot directly indicate the strength of the target, especially when LoS and interference clutter are very strong. This will lead to false targets (due to strong interference clutter) or missed targets (BPL is not optimal and the perceived beamforming gain is small). In view of this problem, the SNR associated with the target (e.g., the perceived SNR) can be used instead of RSRP / SNR as another indicator for selecting candidate BPLs, because the SNR associated with the target has eliminated the effects of LoS and interference clutter. Considering that calculating the perceived SNR with fewer RS ​​symbols and a low-complexity algorithm (such as L1-RSRP calculation in the communication BM process) may not be an easy task, various design options are proposed below on how to combine the RSRP-based BM operation with the baseline BM process, or how to replace certain operations of the baseline BM process with the RSRP-based BM operation. It should be noted that the concepts of P1 / P2 / P3 (in the BM operation of mobile communication) are reused for the RSRP-based BM operation, but the detailed operations are not exactly the same as P1 / P2 / P3.

[0072] Fig.181800 is an example scenario of RSRP-based BM operation using P1 to P3 according to an embodiment of the present invention. In P1, RSRP-based BM operation is based on periodic BM RS and uses 4 coarse Tx beams (1 symbol per Tx beam) and 4 coarse Rx beams. In P2, RSRP-based BM operation is based on aperiodic BM RS and uses 3 fine Tx beams (1 symbol per Tx beam) and 1 coarse Rx beam. In P3, RSRP-based BM operation is based on aperiodic BM RS and uses 1 fine Tx beam (1 symbol per Tx beam) and 3 fine Rx beams.

[0073] Fig.19It is an example scenario 1900 for combining RSRP-based BM operation with a baseline BM process according to an embodiment of the present invention. Scenario 1900 describes options 1 to 3 on how to combine RSRP-based BM operation with a baseline BM process, or how to replace certain operations of the baseline BM process with RSRP-based BM operation. In option 1, P1 is used for RSRP-based BM operation, which is then combined with single-stage sensing of the baseline BM process. Specifically, after the RSRP-based BM operation, the receiver (e.g., UE) reports the result of the BM stage (i.e., BPL information (e.g., N strong Tx beams or all Tx beams)) to the transmitter (e.g., BS), so that the transmitter configures the sensed RS according to the BPL information, and the receiver applies the Rx beam to the corresponding Tx beam according to the BPL information. In option 2, P1 is used for RSRP-based BM operation, which is then combined with a baseline BM process of multi-stage sensing (e.g., including stage 1 and stage 2). Specifically, after RSRP-based BM operation, the receiver (e.g., UE) reports the result of the BM stage (i.e., BPL information (e.g., N strong Tx beams or all Tx beams)) to the transmitter (e.g., BS), and in stage 1 sensing (e.g., for target detection), the transmitter configures sensing RS#1 according to the BPL information, and the receiver applies the Rx beam to correspond to the Tx beam according to the BPL information. Next, after stage 1 sensing, the receiver obtains and reports the sensing result to the transmitter to trigger stage 2 sensing (e.g., for target tracking / refinement). In stage 2, the transmitter configures sensing RS#2 according to the sensing result reported in stage 1 (e.g., using a finer Tx beam), and the receiver applies the Rx beam (e.g., a finer Rx beam) to correspond to the Tx beam according to the sensing result reported in stage 1. In option 3, P1, P2, and P3 are used for RSRP-based BM operation, which is then combined with a baseline BM process of multi-stage sensing (e.g., including stage 1 and stage 2). Specifically, similar to Option 2, P1 is followed by Phase 1 sensing, which then triggers Phase 2 sensing, but before performing Phase 2 sensing, P2 and P3 in RSRP-based BM operation are first performed so that the receiver reports more beam information (e.g., finer Tx and Rx beams) to the transmitter. Next, in Phase 2, the transmitter configures sensing RS#2 according to the P2 report (e.g., using a finer Tx beam), and the receiver applies the Rx beam (e.g., a finer Rx beam) to correspond to the Tx beam according to the P3 report.

[0074] Fig. 20is an example scenario 2000 for combining RSRP-based BM operation with a baseline BM process according to another embodiment of the present invention. Scenario 2000 describes options 4 to 6 on how to combine RSRP-based BM operation with a baseline BM process, or how to replace certain operations of the baseline BM process with RSRP-based BM operation. In option 4, P2 and P3 are used for RSRP-based BM operation, which is then combined with a baseline BM process of multi-stage sensing (e.g., including stage 1 and stage 2). Specifically, in stage 1 sensing, the transmitter configures sensing RS#1, uses all Tx beams to cover the entire sensing area, and the receiver scans all Rx beams for each Tx beam. After stage 1 sensing, the receiver (e.g., UE) obtains and reports the sensing result to the transmitter (e.g., BS) to trigger stage 2 sensing, but before performing stage 2 sensing, P2 and P3 in RSRP-based BM operation are first performed so that the receiver reports more beam information (e.g., finer Tx and Rx beams) to the transmitter. Next, in phase 2, the transmitter configures the sensing RS#2 according to the P2 report (e.g., using a finer Tx beam), and the receiver applies the Rx beam (e.g., a finer Rx beam) to correspond to the Tx beam according to the P3 report. In option 5, P1 is used for RSRP-based BM operation, which is then used in conjunction with phase 2 of the multi-stage sensing baseline BM process. Specifically, after the RSRP-based BM operation, the receiver (e.g., UE) reports the result of the BM phase, i.e., BPL information (e.g., N strong Tx beams or all Tx beams), to the transmitter (e.g., BS), so that the transmitter configures the sensing RS#2 according to the BPL information (e.g., using a finer Tx beam), and the receiver applies the Rx beam (e.g., a finer Rx beam) to correspond to the Tx beam according to the BPL information. In option 6, P1, P2, and P3 are used for RSRP-based BM operation, which is then used in conjunction with phase 2 of the multi-stage sensing baseline BM process. Specifically, in P1, the receiver reports BPL information (e.g., N strong Tx beams) to the transmitter, in P2, the receiver reports further Tx beam information (e.g., a finer Tx beam) to the transmitter, and in P3, the receiver reports further Rx beam information (e.g., a finer Rx beam) to the transmitter. Next, in phase 2 perception, the transmitter configures perception RS#2 according to the P2 report (e.g., using a finer Tx beam), and the receiver applies the Rx beam (e.g., a finer Rx beam) to the corresponding Tx beam according to the P3 report.

[0075] According to certain schemes of the present invention, a strategy for selecting a specific BM process based on sensing use cases, channel conditions and other conditions is proposed. For example, in single-station sensing, since the Tx beam and Rx beam directions are the same, the number of possible BPLs is less than that of dual-station sensing. Therefore, the RS resources and computational complexity required in single-station sensing will be less than those of dual-station sensing. Accordingly, for single-station sensing, the baseline BM process is more suitable than the low-cost BM process. However, a low-cost BM process (e.g., a phased process) can also be used for single-station sensing, especially when the number of Tx beams is large. On the other hand, in dual-station sensing, if the position and direction of the transmitter and receiver are fixed (e.g., BS-based dual-station sensing), the scanning direction and order of the Tx beam and the Rx beam can be predefined so that the transmitter and receiver may not need to try all possible BPLs. Therefore, for this situation in dual-station sensing, a low-cost BM process with a transmitter and receiver with a fixed position and direction can be applied. Otherwise, if the position and direction of the transmitter and receiver are not fixed, another BM process can be selected according to other conditions.

[0076] The BM process selection strategy can be decomposed into the following steps. The first step is to collect all relevant conditions that may affect the selection of the BM process. The second step is to define the process selection rules, such as performance priority (i.e., rules that prioritize the performance of the BM process), cost / complexity priority (i.e., rules that prioritize the cost / complexity of the BM process), or performance and cost / complexity trade-off (i.e., rules that consider the trade-off between performance and cost / complexity). The third step is to select a specific BM process based on the rules. Specifically, the specific BM process is selected from the following: (i) a baseline BM process, (ii) a low-cost BM process with fixed positions and / or directions of the transmitter and receiver, (iii) a low-cost BM process with multi-stage sensing, and (iv) a low-cost BM process with RSRP / SNR-based BM operation.

[0077] In some implementations, the relevant conditions collected in step 1 of the strategy include at least sensing mode (e.g., single-station or dual-station), sensing node information (e.g., whether the sensing node is a fixed position / direction), target information (e.g., strong or weak target), and requirements for different sensing use cases (e.g., periodicity / aperiodicity, accuracy, resolution, etc.).

[0078] Table 2 below provides examples of these relevant conditions.

[0079]

[0080] Table 2

[0081] Some examples of process selection for typical scenarios are provided below in Table 3 (eg, based on performance priority selection rules).

[0082]

[0083] Table 3

[0084] According to certain schemes of the present invention, BM-related RRC configuration and MAC-CE / DCI activation / indication signaling corresponding to the above-mentioned perception process are proposed. The perception signal used for the perception operation generally refers to the perception RS. For example, the perception RS is TDM with the communication signal. The perception RS can be a cell-specific signal (for example, a synchronization signal block (SSB) in mobile communication, a tracking reference signal (TRS), or an RS specially designed for perception), or a UE-specific signal (for example, a new channel state information-reference signal (CSI-RS) for perception). The network may need to indicate the perception RS to the UE (for example, provide the perception RS configuration) and notify the UE to perform the perception operation.

[0085] Regarding BM-related capability reporting, Nfactor=8 is defined in the communication, which is a fixed value, meaning the number of UE Rx beams (e.g., coarse Rx beams). For perception, there can be a similar parameter to indicate the number of coarse Rx beams used for perception. This parameter can be configured as a fixed value predefined in the 3GPP specification, or can be configured through RRC signaling. In addition, or optionally, since the perception area in different use cases or different perception stages may change, the value of this parameter can be reconfigured to other different values. In addition, during the communication BM process, the UE reports the number of fine Rx beams capability to inform the gNB how many resources are allocated to P3. For perception, the receiver can report similar capabilities to inform the transmitter to support scenarios or perception stages where the UE needs to scan fine Rx beams.

[0086] Regarding the transmission configuration indicator (TCI) state, for the communication BM process, all TCI states are in the tci-StatesToAddModList of the PDSCH-config. Since the purpose of communication is for data reception, PDSCH / PDCCH can be used to identify the Rx beam based on the TCI state after the BM operation on the BM RS. For perception, since there is no PDSCH / PDCCH reception, all operations are based on the perception RS or the perception BM RS. Therefore, the framework of communication (e.g., P1, P2, P3 processes) can be used for perception, but there is no PDSCH / PDCCH reception (indicating the TCI state). In addition, or optionally, a perception configuration including a TCI state for perception only can be provided, which can indicate the QCL relationship between the perception RS and the perception BM RS (e.g., the TCI state includes a virtual perception RS (beam angle, beam width), a perception RS, a perception BM RS, or no QCL relationship (source RS)).

[0087] Regarding BPL reporting and target information maintenance, unlike communication, the receiver in perception operation should maintain the Tx beam and Rx beam associated with each target (not just the Tx beam), because two targets may be associated with the same Tx beam but different Rx beams. For RS resource configuration, the receiver can report certain information to inform the transmitter to configure sufficient RS resources for further target tracking / refinement. For example, the reported information can indicate the association between each target and the corresponding Tx and Rx beams (e.g., Tx beam 1→target 1→Rx beam 1, Tx beam 1→target 2→Rx beam 2, and Tx beam 3→target 3→Rx beam 3, etc.). In addition, the receiver can maintain the reported information locally for subsequent perception operations.

[0088] Illustrative Embodiments

[0089] Fig.21 2 is an example communication system 2100 according to an embodiment of the present invention, which includes two example devices 2110 and 2120. Each device 2110 and device 2120 can perform various functions to implement the schemes, technologies, processes and methods described herein related to wireless awareness in an ISAC system (e.g., communication system 2100), including the scenarios / schemes described above and processes 2200 and 2300 described below.

[0090] Each of device 2110 and device 2120 may be part of an electronic device, which may be a UE, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device (e.g., mounted on a vehicle). For example, device 2110 / 2120 may be implemented in a smartphone, a smart watch, a personal digital assistant, a digital camera, or a computing device, such as a tablet, a laptop, or a notebook computer. Each of device 2110 and device 2120 may also be part of a machine type device, which may be an IoT, NB-IoT, or IIoT device, such as a fixed or static device, a home device, a wired communication device, or a computing device. For example, device 2110 / 2120 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. Alternatively, each of device 2110 and device 2120 may be part of an electronic device, which may be a network node, such as a BS, a small base station, a router, or a gateway. For example, device 2110 / 2120 may be implemented in an eNB in ​​an LTE, LTE Advanced, or LTE Advanced Pro network or in a gNB in ​​a 5G, NR, IoT, NB-IoT, or IIoT network. In addition, each of device 2110 and device 2120 may be implemented in the form of one or more integrated circuit (IC) chips, such as but not limited to one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction set computing (CISC) processors. Device 2110 / 2120 may include Fig.21 At least some of the components shown in the device 2110 / 2120, such as the processor 2112 / 2122. The device 2110 / 2120 may also include one or more other components not related to the solution proposed in the present invention (for example, an internal power supply, a display device and / or a user interface device), but for the sake of simplicity, these components of the device 2110 / 2120 are shown in Fig.21 It is not shown in the figure and is not described below.

[0091] On the one hand, processor 2112 and processor 2122 can be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, although the singular term "a processor" is used here to refer to processor 2112 and processor 2122, in some implementations, each processor 2112 and processor 2122 may include multiple processors, and in other implementations may include a single processor. On the other hand, each of processor 2112 and processor 2122 can be implemented in the form of hardware (and optionally, firmware) containing electronic components, where the electronic components are, for example and not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more variable capacitors, which are configured and arranged to achieve specific purposes according to the content of the present invention. In other words, at least in some implementations, each of processor 2112 and processor 2122 is a special-purpose machine specifically designed, arranged, and configured to perform specific tasks including wireless sensing between a receiver (e.g., represented by device 2110) and a transmitter (e.g., represented by device 2110 in single-station sensing or represented by device 2120 in dual-station sensing) in accordance with the present invention.

[0092] In some implementations, the device 2110 may also include a transceiver 2116 coupled to the processor 2112 and capable of wirelessly transmitting and receiving RS and data signals. In some implementations, the transceiver 2116 may wirelessly communicate with different types of UE / BS of different radio access technologies (RAT). In some implementations, the transceiver 2116 may be equipped with multiple antenna ports (not shown), for example, four antenna ports. That is, the transceiver 2116 may be equipped with multiple transmit antennas and multiple receive antennas for multiple-input multiple-output (MIMO) wireless communications. In some implementations, the device 2120 may also include a transceiver 2126 coupled to the processor 2122 and capable of wirelessly transmitting and receiving RS and data signals. In some implementations, the transceiver 2126 may wirelessly communicate with different types of UE / BS of different RATs. In some implementations, the transceiver 2126 may be equipped with multiple antenna ports (not shown), for example, four antenna ports. That is, the transceiver 2126 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communication. Therefore, the device 2110 and the device 2120 may wirelessly communicate directly or indirectly (e.g., through reflection of any target object between them) through the transceiver 2116 and the transceiver 2126.

[0093] In some implementations, the device 2110 may also include a memory 2114 coupled to the processor 2112, which can be accessed by the processor 2112 and store data. In some implementations, the device 2120 may also include a memory 2124 coupled to the processor 2122, which can be accessed by the processor 2122 and store data. Each of the memory 2114 and the memory 2124 may include some type of random-access memory (RAM), such as dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM). Alternatively or additionally, each of the memory 2114 and the memory 2124 may include a read-only memory (ROM) type such as a mask ROM, a programmable ROM (PROM), an erasable programmable ROM (EPROM), and / or an electrically erasable programmable ROM (EEPROM). Alternatively or additionally, each of the memory 2114 and the memory 2124 may include a non-volatile random-access memory (NVRAM), such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and / or phase change memory.

[0094] Each of the device 2110 and the device 2120 can be a communication entity that can communicate with each other using various schemes proposed according to the present invention. For the purpose of illustration and not limitation, the following provides a description of the operation, functions and capabilities of the device 2110 implemented as or as a perceptual RS receiver (e.g., UE or BS) and the device 2120 implemented as or as a perceptual RS transmitter (e.g., UE or BS) in processes 2200 and 2300.

[0095] Illustrative Process

[0096] Fig. 22is an example process 2200 according to an embodiment of the present invention. Process 2200 may represent a portion or all of the aspects of implementing the proposed designs, concepts, schemes, systems, and methods described above regarding wireless awareness in an ISAC system. Process 2200 may represent one aspect of a feature implementation of device 2110. Process 2200 may include one or more operations, actions, or functions as shown in one or more blocks 2210 to 2240. Although shown as discrete blocks, the various blocks of process 2200 may be divided into more blocks, combined into fewer blocks, or deleted, depending on the desired implementation. In addition, the blocks of process 2200 may be arranged in a manner such that: Fig. 22 2200. The process 2200 may be performed in the order shown, or may be performed in a different order. The process 2200 may be implemented by the device 2110 or any suitable UE or BS. For purposes of illustration and not limitation, the process 2200 is described below in the context of the device 2110 as a sensing RS receiver and the device 2120 as a sensing RS transmitter. The process 2200 may start from block 2210.

[0097] At 2210, process 2200 may involve processor 2112 of device 2110 receiving, via transceiver 2116, one or more first RSs based on a first sensing RS configuration. Process 2200 may continue from 2210 to 2220.

[0098] At 2220, process 2200 may involve processor 2112 sensing the target object based on the first RS via transceiver 2116. Process 2200 may continue from 2220 to 2230.

[0099] At 2230, process 2200 may involve processor 2112 receiving, via transceiver 2116, one or more second RSs based on a second sensing RS configuration, wherein the second sensing RS configuration is determined by device 2110 or received from device 2120 when at least one of the sensing requirement and the channel condition changes. Process 2200 may continue from 2230 to 2240.

[0100] At 2240 , process 2200 may involve processor 2112 , via transceiver 2116 , sensing the target object based on the second RS.

[0101] In some implementations, the perception requirements may change as the perception purpose switches from object detection to object tracking or refinement.

[0102] In some implementations, the first RS or the second RS may be TDM, FDM, or TDM and FDM with the communication signal; or the first RS may be TDM with the communication signal, while the second RS may be FDM with the communication signal.

[0103] In some implementations, if the first RS is TDMed with the communication signal and the second RS is FDMed with the communication signal, the first RS and the communication signal may be allocated on a first CC in a first frequency range (e.g., FR1 (i.e., sub6G)), and the second RS may be allocated on a second CC in a second frequency range (e.g., FR2 (i.e., millimeter wave)).

[0104] In some implementations, the process 2200 may further involve the processor 2112 performing scanning of multiple coarse Rx beams through the transceiver 2116 to receive the first RS transmitted on the multiple coarse Tx beams. In addition, sensing the target object based on the first RS may be performed each time the coarse Rx beam is scanned to obtain multiple first sensing results related to all first BPLs between the coarse Rx beam and the coarse Tx beam, and sensing the target object may include integrating the first sensing results to determine information related to the target object.

[0105] In some implementations, the information related to the target object may include at least one of: (i) information about at least one of the position, velocity, and angle of the target object; (ii) information about whether intrusion of the target object is detected within the range; (iii) information about whether breathing of the target object is detected; and (iv) information about whether a gesture of the target object is detected.

[0106] In some implementations, the process 2200 may further involve the processor 2112 selecting a coarse Rx beam corresponding to the strongest BPL in the first BPL to receive a second RS transmitted on a plurality of fine Tx beams or on a coarse Tx beam corresponding to the strongest BPL. In addition, sensing the target object based on the second RS may be performed on the selected coarse Rx beam to obtain a plurality of second sensing results related to all second BPLs between the selected coarse Rx beam and the fine Tx beam or the strongest BPL, and sensing the target object based on the second RS may include integrating the second sensing results to determine information related to the target object.

[0107] In some implementations, the process 2200 may further involve the processor 2112 performing another scan of the plurality of fine Rx beams through the transceiver 2116 to receive a second RS transmitted on the plurality of fine Tx beams or on the coarse Tx beam corresponding to the strongest BPL in the first BPL. In addition, sensing the target object based on the second RS may be performed each time the fine Rx beam is scanned to obtain a plurality of second sensing results related to all second BPLs between the fine Rx beam and the fine Tx beam or between the fine Rx beam and the above-mentioned coarse Tx beam, and sensing the target object may include integrating the second sensing results to determine information related to the target object.

[0108] In some implementations, the process 2200 may further involve the processor 2112 selecting one or more candidate BPLs from the first BPL based on the first perception result. In addition, the first perception result may include an RSRP or an SNR value, the second perception RS configuration may be determined based on the first perception result, and the perception of the target object based on the second RS may be performed on one or more Rx beams corresponding to or adjacent to the one or more candidate BPLs.

[0109] In some implementations, the process 2200 may further involve the processor 2112 selecting an Rx beam for receiving a first RS or a second RS transmitted on a Tx beam of the device 2110 or the device 2120 based on location information and direction information of at least one of the device 2110 and the device 2120. In addition, sensing the target object based on the first RS or the second RS may be performed on the selected Rx beam to obtain one or more sensing results, and sensing the target object based on the first RS or the second RS may include integrating the sensing results to determine information related to the target object.

[0110] Fig.23 2300 is an example process according to an embodiment of the present invention. Process 2300 may represent a portion or all of the aspects of the proposed designs, concepts, schemes, systems, and methods described above regarding wireless awareness in an ISAC system. Process 2300 may represent one aspect of a feature implementation of device 2120. Process 2300 may include one or more operations, actions, or functions as shown in one or more blocks 2310 and 2320. Although shown as discrete blocks, the various blocks of process 2300 may be divided into more blocks, combined into fewer blocks, or deleted, depending on the desired implementation. In addition, the blocks of process 2300 may be arranged in a manner such that: Fig.23 The process 2300 may be performed in the order shown, or may be performed in a different order. The process 2300 may be implemented by the device 2120 or any suitable UE or BS. For purposes of illustration and not limitation, the process 2300 is described below in the context of the device 2120 as a sensing RS transmitter and the device 2110 as a sensing RS receiver. The process 2300 may start from block 2310.

[0111] At 2310 , process 2300 may involve processor 2122 of device 2120 transmitting, via transceiver 2126 , one or more first RSs associated with a first sensing RS configuration for sensing a target object. Process 2300 may continue from 2310 to 2320 .

[0112] At 2320, process 2300 may involve processor 2122 transmitting, via transceiver 2126, one or more second RSs associated with a second sensing RS configuration for sensing a target object, wherein the second sensing RS configuration is determined by device 2120 or transmitted to device 2110 when at least one of the sensing requirements and channel conditions changes.

[0113] In some implementations, the perception requirements may change as the perception purpose switches from object detection to object tracking or refinement.

[0114] In some implementations, the first RS or the second RS may be TDM, FDM, or TDM and FDM with the communication signal; or the first RS may be TDM with the communication signal, while the second RS may be FDM with the communication signal.

[0115] In some implementations, if the first RS is TDMed with the communication signal and the second RS is FDMed with the communication signal, the first RS and the communication signal may be allocated on a first CC in a first frequency range (e.g., FR1 (i.e., sub6G)), and the second RS may be allocated on a second CC in a second frequency range (e.g., FR2 (i.e., millimeter wave)).

[0116] In some implementations, the process 2300 may further involve the processor 2122 performing scanning of multiple coarse Tx beams through the transceiver 2126 for transmitting the first RS so as to be received on the multiple coarse Rx beams. In addition, sensing the target object based on the first RS may be performed each time the coarse Rx beam is scanned to obtain multiple first sensing results related to all first BPLs between the coarse Rx beam and the coarse Tx beam, and sensing the target object may include integrating the first sensing results to determine information related to the target object.

[0117] In some implementations, the information related to the target object may include at least one of: (i) information about at least one of the position, velocity, and angle of the target object; (ii) information about whether intrusion of the target object is detected within the range; (iii) information about whether breathing of the target object is detected; and (iv) information about whether a gesture of the target object is detected.

[0118] In some implementations, the process 2300 may further involve the processor 2122 selecting a coarse Tx beam corresponding to the strongest BPL in the first BPL for transmitting a second RS so as to be received on a plurality of fine Rx beams or a coarse Rx beam corresponding to the strongest BPL. In addition, sensing the target object based on the second RS may be performed each time the fine Rx beam or the coarse Rx beam is scanned to obtain a plurality of second sensing results related to all second BPLs or the strongest BPL between the selected coarse Rx beam and the fine Tx beam, and sensing the target object based on the second RS may include integrating the second sensing results to determine information related to the target object.

[0119] In some implementations, the process 2300 may further involve the processor 2122 performing another scan of the plurality of fine Tx beams through the transceiver 2126 for transmitting a second RS for reception on the plurality of fine Rx beams or the coarse Rx beam corresponding to the strongest BPL in the first BPL. In addition, sensing the target object based on the second RS may be performed each time the fine Rx beam is scanned to obtain a plurality of second sensing results related to all second BPLs between the fine Tx beam and the fine Rx beam or between the fine Tx beam and the above-mentioned coarse Rx beam, and sensing the target object may include integrating the second sensing results to determine information related to the target object.

[0120] In some implementations, the process 2300 may further involve the processor 2122 selecting one or more candidate BPLs from the first BPL based on the first perception result. In addition, the first perception result may include an RSRP or an SNR value, the second perception RS configuration may be determined based on the first perception result, and the perception of the target object based on the second RS may be performed on one or more Rx beams corresponding to or adjacent to the one or more candidate BPLs.

[0121] In some implementations, the process 2300 may further involve the processor 2122 selecting a Tx beam for transmitting the first RS or the second RS based on location information and direction information of at least one of the device 2120 and the device 2110, so as to be received on the Rx beam of the device 2120 or the device 2110. In addition, sensing the target object based on the first RS or the second RS may be performed on the Rx beam to obtain one or more sensing results, and sensing the target object based on the first RS or the second RS may include integrating the sensing results to determine information related to the target object.

[0122] Additional Notes

[0123] The subject matter described in the present invention sometimes shows different components included in or connected to different other components. But it should be understood that these depicted architectures are only examples, and in fact many other architectures that realize the same function can be implemented. In a conceptual sense, any arrangement of components that realize the same function is effectively "associated", so that the desired function is realized. Therefore, regardless of the architecture or intermediate components, any two components that are combined to realize a specific function in the present invention can be regarded as "associated" to each other, so that the desired function is realized. Similarly, any two components so associated can also be regarded as "operationally connected" or "operationally coupled" to each other to realize the desired function, and any two components that can be so associated can also be regarded as "operationally couplable" to each other to realize the desired function. Specific examples of coupling in operation include but are not limited to physically matching and / or physically interactive components and / or wirelessly interactive and / or wirelessly interactive components and / or logically interactive and / or logically interactive components.

[0124] Further, with respect to any plural and / or singular terms used in the present invention, those skilled in the art may convert from plural to singular and / or from singular to plural when appropriate for content and / or application. For the sake of clarity, various singular / plural interchangeability may be explicitly described in the present invention.

[0125] Furthermore, those skilled in the art will appreciate that, in general, the terms used in the present invention and, in particular, in the appended claims (e.g., the bodies of the appended claims) are generally intended to be "open" terms, e.g., the term "including" should be interpreted as "including but not limited to", the term "having" should be interpreted as "having at least", the term "comprising" should be interpreted as "including but not limited to", etc. Those skilled in the art will also appreciate that if a specific number of an introduced claim recitation is intended, such intent will be explicitly recited in the claim, and in the absence of such a recitation, such intent is absent. For example, to aid understanding, the appended claims may include the use of the introductory phrases "at least one" and "one or more". However, the use of such phrases should not be interpreted as implying that a claim recitation, by the introduction of the indefinite article "a" or "an", will include any particular claim of such introduced claim recitation to embodiments that include only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and an indefinite article such as "a" or "an", for example, "a and / or an" should be interpreted as meaning "at least one" or "one or more", and the same applies to the use of definite articles used to introduce claim recitations. Furthermore, even if a specific number of an introduced claim enumeration is explicitly recited, one skilled in the art will recognize that such enumeration should be interpreted to mean at least the recited number, e.g., a basic enumeration of "two enumerations" means at least two enumerations or two or more enumerations without other modifiers. Furthermore, where a convention similar to "at least one of A, B, and C, etc." is used, such interpretation is generally intended in the sense that one skilled in the art will understand this convention (e.g., "a system having at least one of A, B, and C" would include, but is not limited to, systems having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). Where a convention similar to "at least one of A, B, or C, etc." is used, such interpretation is generally intended in the sense that one skilled in the art will understand this convention (e.g., "a system having at least one of A, B, or C" would include, but is not limited to, systems having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). Those skilled in the art will also understand that any transitional words and / or phrases that actually represent two or more optional items, whether in the specification, claims or drawings, should be understood to include the possibility of one, any or both of these items. For example, the phrase "A or B" will be understood to include the possibility of "A" or "B" or "A and B".

[0126] As can be seen from the above, it can be understood that various embodiments of the present invention have been described for illustrative purposes, and various modifications can be made without departing from the scope and spirit of the present invention. Therefore, the various embodiments disclosed in the present invention are not meant to be restrictive, and the true scope and spirit are determined by the appended claims.

Claims

1. A wireless sensing method in a communication sensing integrated system, comprising: Receiving, by a processor of the device, one or more first RSs based on a first perceptual reference signal (RS) configuration; The processor senses the target object based on the first RS; receiving, by the processor, one or more second RSs based on a second sensing RS configuration, wherein the second sensing RS configuration is determined by the device or received from another device when at least one of a sensing requirement and a channel condition changes; and The processor senses the target object based on the second RS.

2. The wireless sensing method in the communication sensing integrated system according to claim 1, wherein: The perception requirements change as the perception purpose switches from object detection to object tracking or refinement.

3. The wireless sensing method in the communication sensing integrated system according to claim 1, wherein: The first RS or the second RS and the communication signal are time division multiplexed TDM, frequency division multiplexed FDM, or TDM and FDM; or the first RS and the communication signal are TDM, and the second RS and the communication signal are FDM.

4. The wireless sensing method in the communication sensing integrated system according to claim 3, wherein: If the first RS and the communication signal are TDMed, and the second RS and the communication signal are FDMed, the first RS and the communication signal are allocated on a first component carrier CC in a first frequency range FR, and the second RS is allocated on a second CC in a second FR.

5. The wireless sensing method in the communication sensing integrated system according to claim 1, further comprising: The processor scans a plurality of coarse receiving Rx beams to receive the first RS transmitted on a plurality of coarse transmitting Tx beams. The target object is sensed based on the first RS each time the coarse Rx beam is scanned to obtain multiple first perception results related to all first beam pair links BPL between the coarse Rx beam and the coarse Tx beam, and the target object is sensed including integrating the first perception results to determine information related to the target object.

6. The wireless sensing method in the communication sensing integrated system according to claim 5, wherein: The information related to the target object includes at least one of the following: information about at least one of a position, a velocity, and an angle of the target object; information regarding whether an intrusion of the target object was detected within range; information regarding whether breathing of the target subject is detected; as well as Information about whether a gesture was detected for this target object.

7. The wireless sensing method in the communication sensing integrated system according to claim 5, further comprising: The processor selects a coarse Rx beam corresponding to the strongest BPL among the first BPLs, for receiving the second RS transmitted on a plurality of fine Tx beams or on the coarse Tx beam corresponding to the strongest BPL, Wherein, sensing the target object based on the second RS is performed on the coarse Rx beam to obtain multiple second perception results related to all second BPLs between the coarse Rx beam and the fine Tx beam or related to the strongest BPL, and sensing the target object based on the second RS includes integrating the second perception results to determine information related to the target object.

8. The wireless sensing method in the communication sensing integrated system as claimed in claim 5, further comprising: The processor performs another scanning on the plurality of fine Rx beams to receive the second RS transmitted on the plurality of fine Tx beams or on the coarse Tx beam corresponding to the strongest BPL among the first BPLs, The sensing of the target object based on the second RS is performed each time the fine Rx beam is scanned to obtain multiple second perception results related to all second BPLs between the fine Rx beam and the fine Tx beam or between the fine Rx beam and the coarse Tx beam, and the sensing of the target object based on the second RS includes integrating the second perception results to determine information related to the target object.

9. The wireless sensing method in the communication sensing integrated system as claimed in claim 5, further comprising: The processor selects one or more candidate BPLs from the first BPL based on the first perception result, The first perception result includes a reference signal received power RSRP or a signal-to-noise ratio SNR value, the second perception RS configuration is determined based on the first perception result, and the perception of the target object based on the second RS is performed on one or more Rx beams corresponding to or adjacent to the one or more candidate BPLs.

10. The wireless sensing method in the communication sensing integrated system according to claim 1, further comprising: The processor selects, based on the location information and the direction information of at least one of the device and the other device, an Rx beam for receiving the first RS or the second RS transmitted on the Tx beam of the device or the other device, The sensing of the target object based on the first RS or the second RS is performed on a selected Rx beam to obtain one or more sensing results, and the sensing of the target object based on the first RS or the second RS includes integrating the sensing results to determine information related to the target object.

11. A wireless sensing method in a communication sensing integrated system, comprising: transmitting, by a processor of the device, one or more first RSs associated with a first sensing RS configuration for sensing a target object; as well as One or more second RSs associated with a second sensing RS configuration are transmitted by the processor for sensing the target object, wherein the second sensing RS configuration is determined by the device or transmitted to another device when at least one of a sensing requirement and a channel condition changes.

12. The wireless sensing method in the communication sensing integrated system according to claim 11, wherein: The perception requirements change as the perception purpose switches from object detection to object tracking or refinement.

13. The wireless sensing method in the communication sensing integrated system according to claim 11, wherein: The first RS or the second RS is TDM, FDM, or TDM and FDM with the communication signal; or the first RS is TDM with the communication signal, and the second RS is FDM with the communication signal.

14. The wireless sensing method in the communication sensing integrated system according to claim 13, wherein: If the first RS and the communication signal are TDMed, and the second RS and the communication signal are FDMed, the first RS and the communication signal are allocated on a first CC of a first FR, and the second RS is allocated on a second CC of a second FR.

15. The wireless sensing method in the communication sensing integrated system according to claim 11, further comprising: Scanning, by the processor, a plurality of coarse Tx beams for transmitting the first RS so as to be received on the plurality of coarse Rx beams, Wherein, sensing the target object based on the first RS is performed each time the coarse Rx beam is scanned to obtain multiple first perception results related to all first BPLs between the coarse Rx beam and the coarse Tx beam, and sensing the target object includes integrating the first perception results to determine information related to the target object.

16. The wireless sensing method in the communication sensing integrated system according to claim 15, wherein: The information related to the target object includes at least one of the following: information about at least one of a position, a velocity, and an angle of the target object; information regarding whether an intrusion of the target object was detected within range; information regarding whether breathing of the target subject is detected; as well as Information about whether a gesture was detected for this target object.

17. The wireless sensing method in the communication sensing integrated system according to claim 15, further comprising: The processor selects a coarse Tx beam corresponding to a strongest BPL among the first BPLs for transmitting the second RS so as to be received on a plurality of fine Rx beams or a coarse Rx beam corresponding to the strongest BPL, Wherein, sensing the target object based on the second RS is performed each time the fine Rx beam or the coarse Rx beam is scanned to obtain multiple second perception results related to all second BPLs between the coarse Rx beam and the fine Rx beam or the strongest BPL, and sensing the target object based on the second RS includes integrating the second perception results to determine information related to the target object.

18. The wireless sensing method in the communication sensing integrated system as claimed in claim 15, further comprising: performing another scanning, by the processor, of a plurality of fine Tx beams for transmitting the second RS so as to be received on the plurality of fine Rx beams or the coarse Rx beam corresponding to the strongest BPL among the first BPLs, Wherein, sensing the target object based on the second RS is performed each time the fine Rx beam is scanned to obtain multiple second perception results related to all second BPLs between the fine Tx beam and the fine Rx beam or between the fine Tx beam and the coarse Rx beam, and sensing the target object includes integrating the second perception results to determine information related to the target object.

19. The wireless sensing method in the communication sensing integrated system as claimed in claim 15, further comprising: The processor selects one or more candidate BPLs from the first BPL based on the first perception result, The first perception result includes RSRP or SNR value, the second perception RS configuration is determined based on the first perception result, and the perception of the target object based on the second RS is performed on one or more Rx beams corresponding to or adjacent to the one or more candidate BPLs.

20. A wireless sensing device in a communication sensing integrated system, comprising: 。 a transceiver for wirelessly communicating with a wireless network during operation; as well as A processor is communicatively coupled to the transceiver such that during operation, the processor performs the following operations: receiving one or more first RSs based on a first sensing RS configuration; sensing the target object based on the first RS; receiving one or more second RSs based on a second sensing RS configuration, wherein the second sensing RS configuration is determined by the device or received from another device when at least one of a sensing requirement and a channel condition changes; and The target object is sensed based on the second RS.

21. A storage medium storing a program, wherein when the program is executed, the device executes the steps of the wireless sensing method in the communication sensing integrated system according to any one of claims 1 to 19.

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