Perception beam management method and device in communication perception integrated system

Abstract

The invention discloses a sensing beam management method and device in a communication and sensing integrated system and a storage medium. One method includes determining or receiving, by a processor of a device, a beam configuration and a reference signal (RS) configuration for target object perception; scanning, by the processor, one or more Rx beams of a plurality of received Rx beams one or more times to receive one or more RSs based on the beam configuration and the RS configuration; and sensing, by the processor, the target object based on the 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 sensing beam management 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, which leads 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 and the ISAC-aware beam management design has not been finalized, it has become an important issue for newly developed wireless communication systems. Therefore, it is necessary to provide appropriate solutions 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 perception beam management method in a communication and perception integrated system, including: a processor of a device determines or receives a beam configuration and a reference signal RS configuration for target object perception; the processor scans one or more Rx beams among multiple receiving Rx beams once or multiple times to receive one or more RSs based on the beam configuration and the RS configuration; and the processor perceives the target object based on the RS.

[0007] An embodiment of the present invention proposes a perception beam management method in a communication and perception integrated system, including: determining or transmitting, by a processor of a device, a beam configuration and an RS configuration for target object perception; and scanning, by the processor, one or more Tx beams among multiple Tx beams once or multiple times to transmit one or more RSs based on the beam configuration and the RS configuration.

[0008] The embodiment of the present invention provides a sensing beam management device in a communication sensing integrated system, comprising: a transceiver, used for wireless communication with a wireless network during operation; and a processor, communicatively coupled to the transceiver, so that during operation, the processor performs the following operations: determining or receiving a beam configuration and an RS configuration for sensing a target object; scanning one or more Rx beams among a plurality of receiving Rx beams once or multiple times to receive one or more RSs based on the beam configuration and the RS configuration; and sensing the target object based on the RS.

[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 perception beam management method in the communication perception 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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.

[0012] Figure 1 is an example scenario of a communication environment according to an embodiment of the present invention.

[0013] Figure 2 is an example scenario of Tx and Rx beam patterns during single-station sensing beam scanning according to an embodiment of the present invention.

[0014] Figure 3 is an example scenario of Tx and Rx beam patterns during single-station sensing beam scanning according to an embodiment of the present invention.

[0015] Figure 4 is an example scenario of Tx and Rx beam patterns during single-station sensing beam scanning according to an embodiment of the present invention.

[0016] Figure 5 is an example scenario of Tx and Rx beam patterns during single-station sensing beam scanning according to an embodiment of the present invention.

[0017] Figure 6 is an example scenario of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention.

[0018] Figure 7 is an example scenario of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention.

[0019] Figure 8 is an example scenario of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention.

[0020] Fig. 9 is an example scenario of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention.

[0021] Fig.10 This is an example scenario of Tx and Rx beam patterns for beam tracking in single-station sensing and dual-station sensing according to an embodiment of the present invention.

[0022] Fig.11 This is an example process of single-station aware beam management according to an embodiment of the present invention.

[0023] Fig.12 This is an example process of dual-station aware beam management according to an embodiment of the present invention.

[0024] Fig.13 This is an example scenario of resource allocation for RS configuration according to an embodiment of the present invention.

[0025] Fig.14 This is an example scenario of a signaling interaction mechanism during single-station sensing beam management according to an embodiment of the present invention.

[0026] Fig.15 This is an example scenario of a signaling interaction mechanism during single-station sensing beam management according to an embodiment of the present invention.

[0027] Fig.16 This is an example scenario of a signaling interaction mechanism during dual-station sensing beam management according to an embodiment of the present invention.

[0028] Fig.17 This is an example scenario of a signaling interaction mechanism during dual-station sensing beam management according to an embodiment of the present invention.

[0029] Fig.18 is an example communication system according to an embodiment of the present invention.

[0030] Fig.19 is an example process according to an embodiment of the present invention.

[0031] Fig. 20 is an example process according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] 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.

[0033] Overview

[0034] Embodiments of the present invention relate to various technologies, methods, schemes and / or solutions related to sensor beam management 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.

[0035] In the present invention, a wide beam generally refers to a beam having a relatively larger signal coverage than a narrow beam. For example, a narrow beam can be formed by configuring multiple or all antenna subarrays to point to a specific angle, while a wide beam can be formed by configuring one antenna subarray to point to a specific angle or configuring different antenna subarrays to point to different angles.

[0036] ISAC design is a key technology for B5G / 6G networks, which enables widely deployed communication systems to have perception capabilities. In ISAC systems, beam management is indispensable for both communication and perception, and appropriate transmit (Tx) and receive (Rx) beam pairs need to be determined for beamforming and beam tracking. Traditionally, beam management is standardized in 3GPP for communication. Considering the differences between communication and perception, it is necessary to explore beam management for perception. In view of the above, the present invention proposes some solutions for perceptual beam management in ISAC systems. The embodiments of the present invention propose perceptual beam management processes (including system configuration, beam scanning, beam measurement, beam determination and beam tracking) for monostatic sensing and bistatic sensing, as well as signaling interaction mechanisms to assist in the above processes.

[0037] Figure 1 1 are example scenarios 110 and 120 of communication environments according to embodiments 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 single-station sensing for any one of the target objects 112 and 113. In single-station sensing, the transmitting unit and the receiving unit are usually located at the same location (e.g., within a single device) (or connected by optical fiber and as a distributed single-station system), and therefore share complete knowledge 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 dual-station sensing for any one of the target objects 123 to 125. In dual-station sensing, the transmitter 121 and the receiver 122 are usually located at different locations, the receiver 122 may have only partial knowledge of the transmission signal, and some synchronization (e.g., clock synchronization) between the transmitter 122 and the receiver 122 may be required.

[0038] It is noteworthy that wireless sensing is incorporated into the ISAC system of scenes 110 and 120. For single-station sensing, transceiver 111 can transmit a communication signal with a specific RS configuration (e.g., sensing RS) and receive reflected signals from target objects 112 and 113 distributed in the environment. For dual-station sensing, transmitter 121 can transmit a communication signal with a specific RS configuration (e.g., sensing RS), and receiver 122 can receive reflected signals from target objects 123-125 distributed in the environment. Subsequently, based on the received signal, a typical sensing algorithm, such as a periodogram-based algorithm and a compressed sensing algorithm, can be applied to obtain target information (e.g., angle, distance, and speed).

[0039] Each of the transceiver 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 computer, or an IoT / NB-IoT / IIoT device. The BS may include an evolved NodeB (eNB) in 4G LTE, a next-generation NodeB (gNB) in 5G NR, or a transmission and reception point (TRP), 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 the sensing beam management in the ISAC system according to the present invention. It is worth noting that although various proposed solutions may be described separately or individually, in actual implementation, some or all of the proposed solutions may be used or implemented in combination. Of course, each proposed solution can be used or implemented separately or individually.

[0040] In the present invention, different applications correspond to different perception requirements. Based on a specific application, the transmitter and the receiver can first obtain the corresponding perception requirements, including the perception scene, the maximum detection angle, the distance and speed of interest, the radar cross section (RCS), and the timeliness of perception. Specifically, Figure 1 As shown, perception scenarios can be divided into single-station perception and dual-station perception. For example, if the transmitter and the (radar) receiver are collocated, the perception scenario is single-station perception, otherwise it is dual-station perception. The maximum detection angle, distance and speed are related to the detection area of ​​interest. For example, in a vehicle scenario, the required detection distance and speed can be determined based on common sense, and the expected detection angle can be associated with the geographical relationship between the transmitter, road and receiver in practice. RCS can be approximated based on empirical observations, which plays an important role in determining the perception signal-to-noise ratio (SNR). For example, the vehicle RCS is 20dBsm. The timeliness of perception may also be related to specific applications. For example, for some safety-first scenarios (such as collision avoidance, etc.), the perception information needs to be updated in a timely manner.

[0041] Since the target objects (e.g., target objects 112-113 or 123-125) are randomly distributed in the detection area of ​​interest, beam scanning can be performed to detect the target objects. Based on the specific application and the corresponding sensing requirements, the present invention proposes appropriate Tx and Rx beam patterns during beam scanning, including three cases of single-station sensing and three cases of dual-station sensing, as follows Figures 2 to 5 and Figures 6 to 9 Will discuss separately.

[0042] Figure 2 FIG. 2 is an example scenario 200 of Tx and Rx beam patterns during a single-station sensing beam scan according to an embodiment of the present invention. Figure 2 As shown in part (A) of , scenario 200 describes Case 1, which is preferably used for detecting distant target objects, where the Tx and Rx beams are narrow beams with high beam gain. Case 1 utilizes all antenna subarrays to obtain unidirectional beams, and each scan has the highest beam gain without changing the existing codebook. In particular, the Tx and Rx beams are aligned with each other, that is, the angle of arrival (angle of arrival, AoA) is equal to the angle of departure (angle of departure, AoD). Due to the narrow beam width, the beam scanning interval is also small, which may result in more scans required to complete the traversal search of the entire detection area. Tx and Rx beams 201-203 are scanned continuously at a given scanning interval (e.g., one time slot) to cover the entire detection area. As shown Figure 2 As shown in part (B), in order for the transceiver 210 to generate Tx and Rx beam patterns during each beam scan, all antenna subarrays are pointed at a specific angle at a certain time (denoted as time slot i) to form a narrow beam. In this way, the codebook can be compatible with existing communication infrastructure (e.g., 5G NR).

[0043] Figure 3 FIG. 3 is an example scenario 300 of Tx and Rx beam patterns during a single-station sensing beam scan according to an embodiment of the present invention. Figure 3As shown in part (A) of , scenario 300 describes case 2, which is preferably used for rapid detection of short-range target objects, wherein multiple wide Tx and Rx beams are generated simultaneously. Case 2 causes each antenna subarray to point to different directions at the same time, which is preferably used for rapid detection of short-range targets. In particular, the Tx and Rx beams are aligned with each other, that is, AoA is equal to AoD. Due to the wide beam width and large scanning interval, this case may have the least number of scans (at the expense of low beam gain). Tx beams 301-306 and Rx beams 311-314 are scanned continuously at a given scanning interval to cover the entire detection area. In order for the transceiver 310 to generate Tx and Rx beam patterns during each scan, Tx beams 301-306 and Rx beams 311-314 are aligned with multiple directions at the same time, but generated in different ways. The wide beam at the transmitting end is one subarray facing one direction, and different subarrays face different directions; while the receiving end is the same subarray facing different directions, and different subarrays have the same beam direction configuration. like Figure 3 As shown in part (B) of FIG. 1 , in order to form wide Tx beams 301-306, each antenna subarray is pointed at a different widely spaced angle. Figure 3 As shown in part (C), in order to form a wide Rx beam 311-314, each antenna subarray points to multiple directions, and all antenna subarrays follow the same pattern. In this way, each antenna subarray can receive reflected signals from multiple directions at the same time, and a perception algorithm such as fast Fourier transform (FFT) can be applied to perform angle estimation. To this end, the existing codebook may need to be changed to receive the beam pattern. In addition, the Rx codeword in case 2 is designed for beam splitting so that the AoA in multiple directions can be estimated simultaneously through the perception algorithm.

[0044] Figure 4 is an example scenario 400 of Tx and Rx beam patterns during single-station sensing beam scanning according to an embodiment of the present invention. Scenario 400 describes Case 3, which aims to achieve a compromise between Case 1 and Case 2 in terms of beam gain and scanning times, where the codebook is compatible with existing communication infrastructure (e.g., 5G NR). Case 3 utilizes different antenna subarrays pointing in different directions and can compromise between Case 1 and Case 2. Specifically, as Figure 4 As shown in part (A) of FIG. 4 , there are two stages of beam scanning, including wide beam scanning and narrow beam scanning. During wide beam scanning, at the transceiver 410, the Tx and Rx beams 401-406 are aligned with multiple directions at the same time and are generated in the same manner. In particular, the Tx and Rx beams 401-406 are aligned with each other, that is, AoA is equal to AoD. The Tx and Rx beams 401-406 are continuously scanned at a given scanning interval to cover the entire detection area. Figure 4As shown in part (B) of FIG. 1 , to form wide Tx and Rx beams, each antenna subarray points in a single direction, but the directions of different antenna subarrays are different. After the entire wide beam scan is completed, several wide beams are selected as candidates for beam refinement based on the beam measurement and beam determination process. For example, Tx beams 403 and 404 are considered as candidate wide beams for beam refinement. Figure 4 As shown in part (C) of FIG. 4 , during narrow beam scanning, in order to generate narrow Tx and Rx beams 411-414, all antenna subarrays are pointed at specific angles. The transceiver 410 scans (i.e., sweeps) the narrow beams 411-414 within the candidate wide beams 403-404. In particular, the Tx and Rx beams 411-414 are aligned with each other, i.e., AoA is equal to AoD.

[0045] Accordingly, by applying the solution of the present invention, one or a combination of the above three Tx and Rx beam patterns can be selected during the single-station sensing beam scanning according to the sensing requirements to achieve high estimation accuracy and efficient resource utilization. More specifically, case 1 is preferably used for long-distance detection, and each scan has the highest beam gain, but at the cost of more scans. In addition, case 1 does not require modification of the existing codebook. On the other hand, case 2 is preferably used for short-distance fast detection and has the least number of scans, but at the cost of reduced beam gain. However, case 2 may require modification of the existing codebook because of the Rx beam pattern. In addition, case 3 achieves a compromise between case 1 and case 2, and is also compatible with the existing codebook. In addition, if multiple carriers are configured, the Tx and Rx beam patterns of these three cases during the single-station sensing beam scanning can be used on different carriers at the same time to improve the beam scanning efficiency.

[0046] Figure 5 5 is an example scenario 500 of Tx and Rx beam patterns during beam scanning for single-station sensing according to an embodiment of the present invention. Scenario 500 involves a transceiver 510 that combines the above three scenarios to meet the hybrid sensing requirements for single-station sensing. Figure 5 As shown in part (A) of FIG. 5 , given a detection area of ​​interest 520, Tx / Rx beams 501-502 and 506-507 adopt the beam pattern in case 1 (eg Figure 2 ) to detect distant target objects, while Tx / Rx beams 503-505 use the beam pattern in case 2 (as shown in Figure 3 As shown in Figure 2, it can detect close-range target objects. Figure 5As shown in part (B), given a detection area of ​​interest 530, different Tx / Rx beams are cooperatively activated during beam scanning because the detection area 530 is different from the detection area 520. For example, in the detection area 530, the Tx / Rx beams 506-507 may be unnecessary or redundant, and therefore, only some of the beams are required during the beam scanning of the detection area 530 to improve resource utilization and beam scanning efficiency.

[0047] Figure 6 600 is an example scenario of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention. Scenario 600 describes Case 1, which is preferably used to detect a target object at a long distance, where the Tx and Rx beams are narrow beams with high beam gain. Due to the narrow beam width, the scanning interval is also small, which may result in more scanning times required to complete the traversal search of the entire detection area. Figure 6 As shown in part (A), given fixed Rx beams 651 / 652 / 653, Tx beams 641-643 are continuously scanned at a given scanning interval to cover more cross-areas. Figure 6 As shown in part (B), in order for the transmitter 610 and the receiver 630 to generate Tx and Rx beam patterns during each beam scan, all antenna subarrays are pointed at specific angles to form narrow beams. In this way, the codebook can be compatible with existing communication infrastructure (e.g., 5G NR).

[0048] Figure 7 7 is an example scenario 700 of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention. Scenario 700 describes Case 2, preferably for rapid detection of close-range target objects, where multiple wide Tx and Rx beams are generated simultaneously. Figure 7 As shown in part (A), given a fixed Rx beam 751-754, the Tx beam 741-746 is continuously scanned at a given scanning interval to cover more cross-area. Due to the wide beam width and large scanning interval, this situation may have the least number of scans (at the expense of low beam gain). Wide Tx and Rx beams are generated in different ways. The wide beam at the transmitting end is one subarray facing one direction, and different subarrays face different directions; while the receiving end is the same subarray facing different directions, and different subarrays have the same beam direction configuration. As shown Figure 7 As shown in part (B) of FIG. 1 , in order for the transmitter 710 to generate wide Tx beams 741-746 during each scan, each antenna subarray is pointed at a different widely spaced angle. Figure 7As shown in part (C), in order to generate a wide Rx beam 754-754 at the receiver 730, each antenna subarray points to multiple directions, but all antenna subarrays follow the same pattern. In this way, each antenna subarray can receive reflected signals from multiple directions at the same time, and a perceptual algorithm such as FFT can be applied for angle estimation. To this end, the codebook in this case needs to be carefully designed to adapt to the received beam pattern, that is, the existing codebook may need to be modified due to the received beam pattern.

[0049] Figure 8 is an example scenario 800 of Tx and Rx beam patterns during dual-station sensing beam scanning according to an embodiment of the present invention. Scenario 800 describes Case 3, which aims to achieve a compromise between Case 1 and Case 2 in terms of beam gain and scanning times, wherein the codebook is compatible with existing communication infrastructure (e.g., 5G NR). Specifically, Figure 8 As shown in part (A) of , there are two stages of beam scanning, including wide beam scanning and narrow beam scanning. During the wide beam scanning, the Tx beams 841-846 of the transmitter 810 and the Rx beams 851-856 of the receiver 830 are aligned with multiple directions at the same time and are generated in the same manner. Given the fixed Rx beams 851 / 852 / 853 / 854 / 855 / 856, the Tx beams 841-846 are continuously scanned at a given scanning interval to cover the intersection area. After the wide beam scanning, several wide beams are selected as candidate beams for the next stage - narrow beam scanning based on the beam measurement and determination process. For example, Tx beams 843 and 844 and Rx beams 851 and 852 are considered as candidate wide beams for the next stage of narrow beam scanning. As Figure 8 As shown in part (B) of FIG. 1 , in order to form wide Tx and Rx beams, each antenna subarray points in a single direction, but the directions of different antenna subarrays are different. Figure 8 As shown in part (C), during narrow beam scanning, in order to generate narrow Tx beams 861-864 and narrow Rx beams 871-874, all antenna subarrays are pointed at specific angles. The transmitter 810 scans (i.e., sweeps) the narrow Tx beams 861-864 within the candidate wide Tx beams 843-844, and the receiver 830 scans (i.e., sweeps) the narrow Rx beams 871-874 within the candidate wide Rx beams 851 and 852.

[0050] Accordingly, by applying the scheme of the present invention, one or a combination of the above three cases can be selected during the dual-station sensing beam scanning according to the sensing requirements to achieve high estimation accuracy and high resource utilization efficiency. More specifically, case 1 is preferably used for long-distance detection, and each scan has the highest beam gain, but at the expense of more scan times. In addition, case 1 does not require modification of the existing codebook. On the other hand, case 2 is preferably used for close-range fast detection, and has the least number of scans, but at the expense of reduced beam gain. However, case 2 may require modification of the existing codebook because of the Rx beam pattern. In addition, case 3 achieves a compromise between case 1 and case 2, and is also compatible with the existing codebook. In addition, if multiple carriers are configured, the Tx and Rx beam patterns of these three cases during the dual-station sensing beam scanning can be used on different carriers at the same time to improve the beam scanning efficiency.

[0051] Fig. 9 9 is an example scenario 900 of Tx and Rx beam patterns during bistatic sensing beam scanning according to an embodiment of the present invention. Scenario 900 involves a transmitter 910 and a receiver 920, combining the above three scenarios to meet the hybrid sensing requirements of bistatic sensing. Fig. 9 As shown, given the detection area of ​​interest 930, Tx beams 903-906 and Rx beams 907-908 adopt the beam pattern in case 1 (such as Figure 6 ) to detect distant target objects, while Tx beam 901 and Rx beam 902 use the beam pattern in case 2 (as shown in Figure 7 As shown) to detect close-range target objects. Given a fixed Rx beam, only part of the Tx beams are cooperatively activated during the beam scanning of dual-station perception according to the detection area to improve resource utilization efficiency and beam scanning efficiency. For example, given a fixed Rx beam 907, only part of the Tx beams 903-904 are required to cover the intersection area, and the remaining Tx beams 901 and 905-906 are considered redundant and omitted because they do not intersect with the Rx beam 907. For example, given a fixed Rx beam 902, only part of the Tx beams (e.g., Tx beam 901) are required to cover the intersection area, and the remaining Tx beams 903-906 are considered redundant and omitted because they do not intersect with the Rx beam 902. For example, given a fixed Rx beam 908, only part of the Tx beams 905-906 are needed to cover the intersection area, while the remaining Tx beams 901 and 903-904 are considered redundant and omitted because they do not intersect with the Rx beam 908.

[0052] Fig.10 1000 is an example scenario of Tx and Rx beam patterns for beam tracking in single-station sensing and dual-station sensing according to an embodiment of the present invention. Fig.10Part (A) describes a single-station sensing scenario, while part (B) describes a dual-station sensing scenario. Fig.10 As shown in part (A), given the estimated target AoA, the transceiver 1010 sets the AoD to be equal to the AoA, that is, the directions of the Tx beam 1001 and the Rx beam 1002 are the same. The transceiver 1010 transmits a communication signal with a specific RS configuration (e.g., sensing RS) through the narrow Tx beam 1001, and receives a reflected signal from the tracked target object 1020 through the narrow Rx beam 1002. In order to generate directional beams 1001 and 1002 with high beam gain, all antenna subarrays are pointed to the estimated target AoD. As shown in FIG. Fig.10 As shown in part (B) of FIG. 1 , given the estimated target AoA, the AoD can be determined by the transmitter 1030 through some signaling interaction mechanism (described in Figure 16-17 The transmitter 1030 transmits a communication signal with a specific RS configuration (e.g., sensing RS) according to the AoD through a narrow Tx beam 1003, and the receiver 1050 receives a reflected signal from the tracked target object 1040 through a narrow Rx beam 1004 according to the AoA. In order to generate directional beams 1003 and 1004 with high beam gain, all antenna subarrays are pointed to the estimated target AoD and AoA, respectively.

[0053] Fig.11 1 is an example process 1100 of single-station sensing beam management according to an embodiment of the present invention. The process 1100 includes multiple steps, which can be performed by a transceiver (e.g., a user equipment or a base station). First, in step 1101, the transceiver determines a preset configuration, including sensing requirements, Tx and Rx beam patterns during beam scanning, activated Tx / Rx beams and RS configurations, etc. The sensing requirements can be determined by the transceiver through a certain signaling interaction mechanism (in Figure 14-15 The perception requirements may include the perception scenario (i.e., single-station perception or dual-station perception), the maximum detection angle, the distance and speed of interest, the RCS, and the timeliness of perception. Based on the perception requirements, if the perception scenario is single-station perception, the Figure 2-4 The appropriate Tx and Rx beam patterns are selected in the three cases described in . Based on the detection area, only some Tx / Rx beams can be activated for beam scanning. Given the Tx and Rx beam patterns selected during beam scanning, the transceiver can configure the RS according to the sensing requirements (in Fig.13). Different service requirements may correspond to different RS configurations. For example, the maximum detection speed may be associated with the orthogonal frequency division multiplexing (OFDM) symbol spacing between two RSs, the maximum detection range may be associated with the subcarrier spacing between two RSs, and the total number of resource elements allocated to the RSs may contribute to the radar processing gain.

[0054] Following step 1101, if case 1 or case 2 is adopted, process 1100 may proceed to step 1102. In step 1102, beam scanning is performed. Figure 2 and Figure 3 The Tx and Rx beam patterns shown, the transceiver is continuously aligned with different directions within a given scan interval to cover the entire detection area. The Tx and Rx beams are aligned with each other, that is, AoA is equal to AoD. In step 1103, beam measurement and determination are performed. For each scan, the radar receiver receives the reflected signal from the target object and executes a perception algorithm (e.g., a periodogram-based algorithm) to estimate the target AoA, distance, and speed. Once the target AoA is measured and estimated, the target AoD can be determined accordingly, because for single-station perception, AoD is equal to AoA.

[0055] After step 1101, if case 3 is adopted, process 1100 can proceed to 1104. In step 1104, the transceiver first performs a wide beam scan. Within a given wide scan interval, the transceiver continuously aims at different directions to cover the entire detection area. AoA is equal to AoD. In step 1105, wide beam measurement and determination are performed. For each wide beam scan, the radar receiver receives the reflected signal from the target object and executes a perception algorithm to obtain a range-Doppler (RD) map. The radar receiver can record the SNR of the perceived target in the RD map and select several candidate wide beams with a perceived SNR higher than a threshold. For example, if Figure 4 As shown in part (A) of FIG. 1 , beams 403 and 404 are considered as candidate wide beams for the next stage - narrow beam scanning. In step 1106, Tx and Rx narrow beams (such as Figure 4 100 is a schematic diagram of a radar receiver that detects a narrow beam pattern (e.g., beams 411-414) in a given narrow scan interval. The AoA is equal to the AoD. In step 1107, narrow beam measurements and determinations are performed. For each narrow beam scan, the radar receiver receives a reflected signal from a target object and executes a perception algorithm (e.g., a periodogram-based algorithm). The AoA can be estimated by the narrow beam pattern.

[0056] After steps 1103 and 1107, process 1100 may proceed to step 1108. In step 1108, beam tracking is performed (e.g., using Fig.10 The Tx and Rx beam patterns shown in part (A) of the embodiment are beam tracked). Based on the estimated target AoA, the transceiver sets the AoD equal to the AoA. In order to generate directional Tx and Rx beams with high beam gain, all antenna subarrays are pointed to the estimated target AoD and AoA, respectively.

[0057] Fig.12 1 is an example process 1200 of dual-station sensing beam management according to an embodiment of the present invention. The process 1200 includes a plurality of steps performed by a transmitter and a receiver that are separated from each other in cooperation. First, in step 1201, the transmitter determines a preset configuration, including sensing requirements, Tx and Rx beam patterns during beam scanning, activated Tx / Rx beams, and RS configuration, etc. The transmitter can use a certain signal interaction mechanism (described below) to Figure 16-17 The perception requirements can include the perception scenario (i.e., single-station perception or dual-station perception), maximum detection angle, distance and speed of interest, RCS, and timeliness of perception. Based on the perception requirements, if the perception scenario is dual-station perception, the Figure 6-8 The appropriate Tx and Rx beam patterns during beam scanning are selected in the three cases depicted in FIG. In the case of fixed Rx beams, only part of the Tx beams can be activated to collaboratively illuminate the intersection area. Based on the Tx and Rx beam patterns selected during beam scanning, the RS can be configured at the transceiver to meet the perception requirements (described in the following Fig.13 ). Different service requirements may correspond to different RS configurations. For example, the maximum detection speed may be related to the OFDM symbol spacing between two RSs, the maximum detection distance may be related to the subcarrier spacing between two RSs, and the total number of resource elements allocated to RSs may contribute to the radar processing gain.

[0058] After step 1201, if case 1 or case 2 is adopted, process 1200 may proceed to step 1202. In step 1202, beam scanning is performed. Figure 6 and Figure 7 The Tx and Rx beam patterns shown in the figure, the transmitter is continuously aimed at different directions within a given scanning interval to cover the entire detection area. For each Rx direction, the Tx beam scans different directions in turn to cover more intersection areas; the Rx beam alternates in turn until all detection areas are covered. In step 1203, beam measurement and determination are performed. For each scan, the radar receiver receives the reflected signal from the target object and executes a perception algorithm (e.g., a periodogram-based algorithm) to estimate the AoA, distance, and speed of the target.

[0059] After step 1201, if case 3 is adopted, process 1200 can continue to step 1204. In step 1204, if Figure 8 As shown in the upper part (A) of , wide Tx and Rx beams are generated, and thus corresponding wide beam scans are performed. For each Rx beam, within a given wide scan interval, the transmitter is sequentially aimed in different directions to cover more intersection areas. The Rx beam changes the aiming direction until the entire detection area is covered. In step 1205, wide beam measurements and determinations are performed. For each wide beam scan, the radar receiver receives a reflected signal from a target object and executes a perception algorithm to obtain an RD map. The radar receiver can record the SNR of the perceived target in the RD map and select several candidate wide beams with a perceived SNR higher than a threshold. For example, as Figure 8 As shown in part (A) of FIG. 120 , Tx beams 843-844 and Rx beams 851-852 are considered as candidate wide beams. In step 1206, as shown in FIG. Figure 8 As shown in the lower part (A) of , narrow Tx and Rx beams are generated during narrow beam scanning. For each Rx beam, the transmitter scans narrow beams 861-864 in candidate wide beams 843-844 within a given narrow scanning interval. The Rx beam alternates from narrow beam 871 to narrow beam 874 in candidate wide beams 851-852. In step 1207, narrow beam measurements and determinations are performed. For each narrow beam scan, the radar receiver receives a reflected signal from a target object and executes a perception algorithm (e.g., an algorithm based on a periodogram). AoA can be estimated by the narrow beam pattern.

[0060] After steps 1203 and 1207, process 1200 may proceed to 1208. In step 1208, beam reporting is performed for Tx beam determination. Since the target AoA may be estimated in step 1203 or 1207, the transmitter may obtain the AoD through three beam reporting methods. In the first method, given a fixed Rx beam pattern, the transmitter scans the Tx beam at different times, and once the target is detected, the receiver reports the Tx beam identifier (ID) indicated by the RS configuration. However, in cases 2 and 3, when multiple beams are transmitted, the Tx beam cannot be uniquely determined, so additional redundant beams are also required. In the second method, the receiver calculates the target AoD and reports it directly to the transmitter. Considering that the locations of the transmitter and receiver are known, the target distance R and AoA can be estimated at the receiver, and the AoD is calculated based on the geographical relationship. Geolocation methods can be used to estimate the target AoD and uniquely determine the Tx beam ID. In the third method, the receiver reports the estimated target distance R and AoA to the transmitter. Assuming the transmitter knows the location of the receiver, given the estimated target range R and AoA, the target AoD can be calculated at the transmitter. Geolocation methods can be used to estimate the target AoD and uniquely determine the Tx beam ID.

[0061] In step 1209, beam tracking is performed (e.g., using Fig.10 The Tx and Rx beam patterns shown in part (B) of the embodiment are used for beam tracking). Given the estimated target AoA, the transmitter sets the AoD equal to the AoA. In order to generate directional Tx and Rx beams with high beam gain, all antenna subarrays are pointed at the estimated target AoD and AoA, respectively.

[0062] Fig.13 1300 is an example scenario of resource allocation for RS configuration according to an embodiment of the present invention. Once a transmitter transmits a communication signal with a specific RS configuration (e.g., a sensing RS) during beam scanning or beam tracking, the RS is reused for communication channel estimation and radar sensing. The transmitter periodically or semi-periodically allocates resource blocks 1310, 1320, or 1330, each of which includes an RS and data. Different service requirements correspond to different RS configurations. For example, the maximum detection speed is associated with the OFDM symbol spacing between RS1311 and RS1317, the maximum detection distance is associated with the subcarrier spacing between RS1311 and RS1314, the symbol spacing arrangement RS can be used to remove static clutter and estimate target speed, and the total number of resource elements allocated to the RS contributes to the radar processing gain.

[0063] Fig.141400 is an example scenario of a signaling interaction mechanism during single-station-aware beam management according to an embodiment of the present invention. Scenario 1400 describes an example message sequence chart of beam management involving a transmitter 1410 and a receiver 1420, wherein the transmitter and the receiver are collocated, for example, in a single device (e.g., a transceiver), and beam scanning is performed using Tx and Rx beam patterns of Case 1 or Case 2. The Tx and Rx beam patterns of Case 1 or Case 2 can be referred to. Figure 2 and Figure 3 . In step 1401, the situation indicating the Tx and Rx beam patterns and the beam scanning interval are transmitted to the receiver in a preset process. In step 1402, the transmitter informs the receiver of the perceived RS configuration. In step 1403, after executing the perception algorithm to estimate the AoA, the receiver reports the estimated AoA to the transmitter. With the estimated AoA, the transmitter sets the fine angle AoD equal to the AoA and reconfigures the resources according to the perception requirements. In step 1404, the transmitter informs the receiver of the configuration of the reconfigured RS for beam tracking.

[0064] Fig.15 1500 is an example scenario of a signaling interaction mechanism during single-station-aware beam management according to an embodiment of the present invention. Scenario 1500 describes an example message sequence diagram of beam management involving a transmitter 1510 and a receiver 1520, wherein the transmitter and the receiver are collocated, such as being located in a single device (e.g., a transceiver), and beam scanning is performed using the Tx and Rx beam patterns of Case 3. The Tx and Rx beam patterns of Case 3 can be referred to. Figure 4 . In step 1501, the situation indicating the Tx and Rx beam patterns and the beam scanning interval are transmitted to the receiver in a preset process. In step 1502, the transmitter informs the receiver of the perceived RS configuration. In step 1503, after executing the perception algorithm to estimate the perceived SNR in the RD map, the receiver reports the selected wide beam ID whose perceived SNR is above the threshold to the transmitter. In step 1504, the transmitter informs the receiver of the RS configuration for narrow beam scanning. In step 1505, after executing the perception algorithm to estimate the AoA, the receiver reports the estimated AoA to the transmitter. With the estimated AoA, the transmitter sets the fine angle AoD equal to the AoA and reconfigures the resources according to the perception requirement. In step 1506, the transmitter informs the receiver of the configuration of the reconfigured RS for beam tracking.

[0065] Fig.161600 is an example scenario of a signaling interaction mechanism during dual-station-aware beam management according to an embodiment of the present invention. Scenario 1600 describes an example message sequence chart of beam management involving a transmitter 1610 and a receiver 1620, wherein the transmitter and the receiver are located at different locations (e.g., a UE and a BS, two UEs, or two BSs) and beam scanning is performed using Tx and Rx beam patterns of case 1 or case 2. The Tx and Rx beam patterns of case 1 or case 2 can be referred to. Figure 6 and Figure 7 . In step 1601, the conditions indicating the Tx and Rx beam patterns and the beam scanning interval are transmitted to the receiver in a preset process. In step 1602, the transmitter informs the receiver of the perceived RS configuration. In step 1603, after executing the perception algorithm, the receiver reports the information obtained using one of the three beam reporting methods. In the first method, the TX beam ID with a perceived SNR above the threshold is reported to the transmitter. In the second method, given the auxiliary information of the line-of-sight (LoS) path length between the transmitter and the receiver, the receiver calculates the target AoD based on the geographical relationship. The receiver then reports the estimated AoD directly to the transmitter. In the third method, the receiver reports the estimated target distance and AoA to the transmitter so that the transmitter can calculate the AoD based on the geographical relationship. With the reported information, the transmitter reconfigures the resources according to the perception requirements. In step 1604, the transmitter informs the receiver of the configuration of the reconfigured RS for beam tracking.

[0066] Fig.17 1700 is an example scenario of a signaling interaction mechanism during dual-station-aware beam management according to an embodiment of the present invention. Scenario 1700 describes an example message sequence chart of beam management involving a transmitter 1710 and a receiver 1720, where the transmitter and the receiver are located at different locations (e.g., a UE and a BS, two UEs, or two BSs) and beam scanning is performed using the Tx and Rx beam patterns of Case 3. The Tx and Rx beam patterns of Case 3 can be referred to. Figure 8. In step 1701, the situation indicating the Tx and Rx beam patterns and the beam scanning interval are transmitted to the receiver in a preset process. In step 1702, the transmitter informs the receiver of the perceived RS configuration. In step 1703, after executing the sensing algorithm to obtain the perceived SNR in the RD map, the receiver reports the selected wide beam ID whose perceived SNR is above the threshold to the transmitter. In step 1704, the transmitter informs the receiver of the RS configuration of the narrow beam scanning. In step 1705, after executing the sensing algorithm, the receiver reports the information obtained using one of the three beam reporting methods. In the first method, the Tx beam ID with a perceived SNR above the threshold is reported to the transmitter. In the second method, given the auxiliary information of the LoS path length between the transmitter and the receiver, the receiver calculates the target AoD based on the geographical relationship. Then, the receiver directly reports the estimated AoD to the transmitter. In the third method, the receiver reports the estimated target distance and AoA to the transmitter so that the transmitter can calculate the AoD based on the geographical relationship. With the reported information, the transmitter reconfigures the resources according to the sensed requirements. In step 1706, the transmitter informs the receiver of the configuration of the reconfigured RS for beam tracking.

[0067] Illustrative Embodiments

[0068] Fig.18 1 is an example communication system 1800 according to an embodiment of the present invention, which includes two example devices 1810 and 1820. Each device 1810 and device 1820 can perform various functions to implement the schemes, techniques, processes and methods described herein related to cognitive beam management in an ISAC system, including the scenarios / schemes described above and processes 1900 and 2000 described below.

[0069] Each of device 1810 and device 1820 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 1810 / 1820 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 1810 and device 1820 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 1810 / 1820 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 1810 and device 1820 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 1810 / 1820 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 1810 and device 1820 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 1810 / 1820 may include Fig.18 At least some of the components shown in the device 1810 / 1820, such as the processor 1812 / 1822. The device 1810 / 1820 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 1810 / 1820 are shown in Fig.18 It is not shown in the figure and is not described below.

[0070] On the one hand, processor 1812 and processor 1822 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 1812 and processor 1822, in some implementations, each processor 1812 and processor 1822 may include multiple processors, and in other implementations may include a single processor. On the other hand, each of processor 1812 and processor 1822 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 1812 and processor 1822 is a special-purpose machine specifically designed, arranged, and configured to perform specific tasks of perceptual beam management included in a receiver (e.g., represented by device 1810) and a transmitter (e.g., represented by device 1810 in single-station sensing or represented by device 1820 in dual-station sensing) in accordance with the present invention.

[0071] In some implementations, the device 1810 may also include a transceiver 1816 coupled to the processor 1812 and capable of wirelessly transmitting and receiving RS and data signals. In some implementations, the transceiver 1816 can wirelessly communicate with different types of UE / BS of different radio access technologies (RAT). In some implementations, the transceiver 1816 may be equipped with multiple antenna ports (not shown), for example, four antenna ports. That is, the transceiver 1816 may be equipped with multiple transmit antennas (e.g., arranged in subarrays) and multiple receive antennas (e.g., arranged in subarrays) for multiple-input multiple-output (MIMO) wireless communications. In some implementations, the device 1820 may also include a transceiver 1826 coupled to the processor 1822 and capable of wirelessly transmitting and receiving RS and data signals. In some implementations, the transceiver 1826 can wirelessly communicate with different types of UE / BS of different RATs. In some implementations, the transceiver 1826 may be equipped with multiple antenna ports (not shown), for example, four antenna ports. That is, the transceiver 1826 may be equipped with multiple transmit antennas (e.g., arranged in subarrays) and multiple receive antennas (e.g., arranged in subarrays) for MIMO wireless communication. Therefore, the device 1810 and the device 1820 may communicate wirelessly directly or indirectly (e.g., through reflections from any target object between them) through the transceiver 1816 and the transceiver 1826.

[0072] In some implementations, the device 1810 may also include a memory 1814 coupled to the processor 1812, which can be accessed by the processor 1812 and store data. In some implementations, the device 1820 may also include a memory 1824 coupled to the processor 1822, which can be accessed by the processor 1822 and store data. Each of the memory 1814 and the memory 1824 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 1814 and the memory 1824 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 1814 and the memory 1824 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.

[0073] Each of the device 1810 and the device 1820 may be a communication entity capable of communicating 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 1810 implemented as or as a perceptual receiver (e.g., UE or BS) and the device 1820 implemented as or as a perceptual transmitter (e.g., UE or BS) in processes 1900 and 2000.

[0074] Illustrative Process

[0075] Fig.191900 is an example process according to an embodiment of the present invention. Process 1900 may represent a portion or all of the aspects of implementing the proposed designs, concepts, schemes, systems, and methods described above for perceptual beam management in an ISAC system. Process 1900 may represent one aspect of a feature implementation of device 1810. Process 1900 may include one or more operations, actions, or functions as shown in one or more blocks 1910 to 1930. Although shown as discrete blocks, the various blocks of process 1900 may be divided into more blocks, combined into fewer blocks, or deleted, depending on the desired implementation. In addition, the blocks of process 1900 may be arranged in a manner such that: Fig.19 The process 1900 may be performed in the order shown, or may be performed in a different order. The process 1900 may be implemented by the device 1810 or any suitable UE or BS. For purposes of illustration and not limitation, the process 1900 is described below in the context of the device 1810 as a sensing receiver and the device 1820 as a sensing transmitter. The process 1900 may start at block 1910.

[0076] At 1910, process 1900 may involve processor 1812 of device 1810 determining or receiving, via transceiver 1816, a beam configuration and an RS configuration for target object perception. Process 1900 may continue from 1910 to 1920.

[0077] At 1920 , the process 1900 may involve the processor 1812 scanning one or more Rx beams of the plurality of Rx beams through the transceiver 1816 one or more times to receive one or more RSs based on the beam configuration and the RS configuration. The process 1900 may continue from 1920 to 1930 .

[0078] At 1930 , process 1900 may involve processor 1812 performing sensing on the target object based on the RS.

[0079] In certain embodiments, the beam configuration may indicate Tx and Rx beam patterns and at least one of activated Tx and Rx beams for scanning, and the RS configuration may indicate one or more time and frequency resources of the RS.

[0080] In some embodiments, the beam configuration and RS configuration may be based on perception requirements, where the perception requirements include at least one of the following: (i) a perception scenario indicating single-station perception or dual-station perception; (ii) a maximum detection angle; (iii) a distance and speed of interest; (iv) RCS; and (v) timeliness of perception.

[0081] In certain embodiments, based on the perceived detection area, the one or more Rx beams activated for scanning may include only a portion of the Rx beams.

[0082] In some embodiments, during each scan, multiple antenna subarrays of the device may be configured to all point in a particular direction to form a narrow beam at one time.

[0083] In some embodiments, during each scan, multiple antenna subarrays of the device may be configured to each point in a corresponding direction to form multiple wide beams at a time.

[0084] In some embodiments, during one scan, multiple antenna subarrays of the device may be configured to each point in a corresponding direction to form multiple wide beams at one time; while during another scan, all antenna subarrays are configured to point in a specific direction to form a narrow beam at one time.

[0085] In some embodiments, process 1900 may further involve processor 1812 reporting, via transceiver 1816, to device 1820 transmitting RS, a beam ID of a Tx beam having a perceived SNR exceeding a threshold, an AoD of the RS, or an AoA of the RS and a distance between device 1810 and a target object.

[0086] In some embodiments, during the sensing of the target object, static clutter may be removed using intervals along the OFDM symbol axis within a coherent processing interval (CPI).

[0087] In some embodiments, the process 1900 may further involve the processor 1812 determining an Rx beam from one or more Rx beams for tracking the target object based on the sensing result.

[0088] Fig. 20 2000 is an example process according to an embodiment of the present invention. Process 2000 may represent a portion or all of the aspects of implementing the proposed designs, concepts, schemes, systems, and methods described above for perceptual beam management in an ISAC system. Process 2000 may represent one aspect of a feature implementation of device 1820. Process 2000 may include one or more operations, actions, or functions as shown in one or more blocks 2010 and 2020. Although shown as discrete blocks, the various blocks of process 2000 may be divided into more blocks, combined into fewer blocks, or deleted, depending on the desired implementation. In addition, the blocks of process 2000 may be implemented as follows: Fig. 20 1810 as a sensing receiver and 1820 as a sensing transmitter. Process 2000 may begin at block 2010.

[0089] At 2010, process 2000 may involve processor 1822 of device 1820 determining or transmitting, via transceiver 1826, a beam configuration and an RS configuration for target object perception. Process 2000 may continue from 2010 to 2020.

[0090] At 2020 , the process 2000 may involve the processor 1822 scanning, by the transceiver 1826 , one or more Tx beams of the plurality of Tx beams to transmit one or more RSs based on the beam configuration and the RS configuration.

[0091] In certain embodiments, the beam configuration may indicate Tx and Rx beam patterns and at least one of activated Tx and Rx beams for scanning, and the RS configuration may indicate one or more time and frequency resources of the RS.

[0092] In some embodiments, the beam configuration and RS configuration may be based on perception requirements, where the perception requirements include at least one of the following: (i) a perception scenario indicating single-station perception or dual-station perception; (ii) a maximum detection angle; (iii) a distance and speed of interest; (iv) RCS; and (v) timeliness of perception.

[0093] In certain embodiments, based on the perceived detection area, the one or more Tx beams activated for scanning may include only a portion of the Tx beams.

[0094] In some embodiments, during each scan, multiple antenna subarrays of the device may be configured to all point in a particular direction to form a narrow beam at one time.

[0095] In some embodiments, during each scan, multiple antenna subarrays of the device may be configured to each point in a corresponding direction to form multiple wide beams at a time.

[0096] In some embodiments, during one scan, multiple antenna subarrays of the device may be configured to each point in a corresponding direction to form multiple wide beams at one time; while during another scan, all antenna subarrays are configured to point in a specific direction to form a narrow beam at one time.

[0097] In some embodiments, the process 2000 may further involve the processor 1822 receiving, from the device 1810 through the transceiver 1826, a beam ID of a Tx beam having a perceived SNR exceeding a threshold, an AoD of the RS, or an AoA of the RS, and a distance between the device 1810 receiving the RS and a target object.

[0098] In some embodiments, during the sensing of the target object, the spacing along the OFDM symbol axis within the CPI may be used to remove static clutter.

[0099] In some embodiments, the process 2000 may further involve the processor 1822 determining a Tx beam from one or more Tx beams for tracking the target object based on the sensing result.

[0100] Additional Notes

[0101] 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.

[0102] 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.

[0103] 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".

[0104] 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 perception beam management method in a communication perception integrated system, comprising: Determining or receiving, by a processor of the device, a beam configuration and a reference signal RS configuration for target object perception; Scanning, by the processor, one or more Rx beams of the plurality of receive Rx beams one or more times to receive one or more RSs based on the beam configuration and the RS configuration; as well as The processor senses the target object based on the RS.

2. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: The beam configuration indicates at least one of transmit Tx and Rx beam patterns and activated Tx and Rx beams for scanning, and the RS configuration indicates one or more time and frequency resources of the RS.

3. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: The beam configuration and the RS configuration are based on a perception requirement, wherein the perception requirement includes at least one of the following: A sensing scenario indicating single-station sensing or dual-station sensing; Maximum detection angle; distance and speed of interest; Radar cross section (RCS); and The timeliness of perception.

4. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: Based on the sensed detection area, one or more Rx beams activated for scanning include only a portion of the Rx beams.

5. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: During each scan, the device's multiple antenna subarrays are configured to all point in a specific direction to form a narrow beam at one time.

6. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: During each scan, the device's multiple antenna subarrays are configured to each point in a corresponding direction to form multiple wide beams at a time.

7. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: During a scan, the device's multiple antenna subarrays are configured to each point in a corresponding direction to form multiple wide beams at one time; During another scan, all antenna subarrays are configured to point in a specific direction to form a narrow beam at one time.

8. The method for managing sensing beams in a communication sensing integrated system according to claim 1, further comprising: The processor reports a beam identifier ID of a Tx beam having a perceived signal-to-noise ratio SNR exceeding a threshold, a transmission angle AoD of the RS, or an arrival angle AoA of the RS, and a distance between the device and the target object to another device transmitting the RS.

9. The sensing beam management method in the communication sensing integrated system according to claim 1, wherein: During the sensing of the target object, the intervals along the orthogonal frequency division multiplexing OFDM symbol axis within the coherent processing interval CPI are used to remove static clutter.

10. The sensing beam management method in the communication sensing integrated system according to claim 1, further comprising: The processor determines an Rx beam from the one or more Rx beams based on the sensing result to track the target object.

11. A method for managing sensing beams in a communication sensing integrated system, comprising: Determining or transmitting, by a processor of the device, a beam configuration and an RS configuration for target object sensing; The processor scans one or more Tx beams among the plurality of Tx beams one or more times to transmit one or more RSs based on the beam configuration and the RS configuration.

12. The sensing beam management method in the communication sensing integrated system according to claim 11, wherein: The beam configuration indicates at least one of transmit Tx and Rx beam patterns and activated Tx and Rx beams for scanning, and the RS configuration indicates one or more time and frequency resources of the RS.

13. The sensing beam management method in the communication sensing integrated system according to claim 11, wherein: The beam configuration and the RS configuration are based on a perception requirement, wherein the perception requirement includes at least one of the following: A sensing scenario indicating single-station sensing or dual-station sensing; Maximum detection angle; distance and speed of interest; RCS; and The timeliness of perception.

14. The sensing beam management method in the communication sensing integrated system according to claim 11, wherein: Based on the sensed detection area, one or more Tx beams activated for scanning include only part of the Tx beams.

15. The sensing beam management method in the communication sensing integrated system according to claim 11, wherein: During each scan, the device's multiple antenna subarrays are configured to all point in a specific direction to form a narrow beam at one time.

16. The sensing beam management method in the communication sensing integrated system according to claim 11, wherein: During each scan, the device's multiple antenna subarrays are configured to each point in a corresponding direction to form multiple wide beams at a time.

17. The sensing beam management method in the communication sensing integrated system according to claim 11, wherein: During a scan, the device's multiple antenna subarrays are configured to each point in a corresponding direction to form multiple wide beams at one time; During another scan, all antenna subarrays are configured to point in a specific direction to form a narrow beam at one time.

18. The method for managing sensing beams in a communication sensing integrated system according to claim 11, further comprising: A beam identifier ID of a Tx beam having a perceived SNR exceeding a threshold, an AoD of the RS, or an AoA of the RS and a distance between the other device and the target object are reported by the processor from another device receiving the RS.

19. The method for managing sensing beams in a communication sensing integrated system according to claim 11, further comprising: A Tx beam is determined from the one or more Tx beams based on the sensing result to track the target object.

20. A sensing beam management 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: Determine or receive a beam configuration and RS configuration for target object perception; Scanning one or more Rx beams among a plurality of receive Rx beams one or more times to receive one or more RSs based on the beam configuration and the RS configuration; as well as The target object is sensed based on the 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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