Sensing method and communication apparatus

Abstract

The present application relates to the technical field of communications. Provided are a sensing method and a communication apparatus. The method comprises: a receiving end determining a global sensing region, wherein the global sensing region is used for indicating a sensing range; receiving mask reference information, wherein the mask reference information is used for determining scatterer information in a first sensing region, the first sensing region is a partial region in the global sensing region, and the density of scatters in the first sensing region is greater than or equal to a first threshold value; and on the basis of the mask reference information, transmitting scatter information in regions in the global sensing region other than the first sensing region. Since a receiving end acquires mask reference information, the receiving end can filter, on the basis of the mask reference information, scatter information in a first sensing region, which scatter information is sensed by the receiving end, and only transmit scatter information in regions in a global sensing region other than the first sensing region. On this basis, the volume of data transmitted can be reduced, thereby reducing data transmission overheads.

Description

A sensing method and communication device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on March 26, 2024, with application number 202410358371.0 and application name "A Perception Method and Communication Device", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The embodiments of the present application relate to the field of communication technology, and in particular to a sensing method and a communication device. Background Art

[0004] Wireless sensing technology analyzes the changes in wireless signals during propagation and obtains the characteristics of the signal propagation space (channel) to achieve scene perception. Acquiring perception information from the environment is the sixth generation (the 6 th As one of the important basic technologies in 6G (generation) network technology, the integration of communication and perception has become an inevitable trend.

[0005] Currently, the main sensing modes include monostatic sensing (also known as self-transmitting and self-receiving) and bistatic sensing (also known as self-transmitting and other-receiving). Monostatic sensing involves a sensing device transmitting a sensing signal, which is then reflected by a target object to produce an echo signal. Sensing data is then derived from the sensing signal and the echo signal. Bistatic sensing involves a sensing device transmitting a sensing signal, which is then reflected by a target object to produce an echo signal. The echo signal is then received by another sensing device, and sensing data is derived from the sensing signal and the echo signal.

[0006] In order to reconstruct environmental information through perception, it is usually necessary to fuse the perception data of multiple perception devices. When the perception scene becomes larger or the perception time is very long, a large amount of environmental information data is usually generated and a large amount of historical data is accumulated, which brings challenges to the data storage and transmission overhead. Summary of the Invention

[0007] The present application provides a sensing method and a communication device to reduce data transmission overhead.

[0008] In a first aspect, the present application provides a sensing method that can be performed by a receiving end, which can be a terminal device, a network device, a chip, or a circuit. Optionally, the chip is a terminal device chip, and the circuit is a terminal device circuit. Optionally, the chip is a network device chip, and the circuit is a network device circuit. This application does not impose specific limitations on this. The receiving end is typically provided with a sensing module that can send a sensing signal to a target object and obtain an echo signal based on the target object's reflection. The receiving end can determine the target object's location information based on the sensing signal and the echo signal.

[0009] The method can be applied to 5G communication systems, 5.5G or future 6G communication systems. This application does not limit this. The method is performed as follows:

[0010] Determine a global perception area, where the global perception area is used to indicate a perception range; receive mask reference information, where the mask reference information is used to determine scatterer information in a first perception area, where the first perception area is a partial area in the global perception area, and the density of scatterers in the first perception area is greater than or equal to a first threshold; and transmit scatterer information in areas other than the first perception area in the global perception area based on the mask reference information.

[0011] In the present application, since the receiving end obtains the mask reference information, the scatterer information in the first perception area perceived by the receiving end can be filtered based on the mask reference information, and only the scatterer information in the area other than the first perception area in the global perception area can be transmitted. Based on this, the amount of data transmitted can be reduced, and the data transmission overhead can be reduced. In addition, the scatterer density in the first perception area in the global perception area of ​​the present application is greater than or equal to the first threshold, that is, the density of the scatterers is relatively large. When reconstructing the environment, the reconstruction effect of the environment is usually not affected when the environment is reconstructed based on the historical scatterer information of the first perception area. Therefore, the receiving end of the present application transmits the scatterer information in the area other than the first perception area in the global perception area, which reduces the data transmission overhead while ensuring the reconstruction effect of the environment.

[0012] In an optional manner, the mask reference information includes: mask size information, mask range information, and a mask matrix, where the mask size information is used to refer to the length of each mask unit in the mask area, the mask range information is used to indicate the boundary of the mask area, and the mask matrix is ​​used to indicate the value of each mask unit in the mask area, and the mask area overlaps with the global perception area in whole or in part.

[0013] In this application, mask reference information includes mask size information, mask range information, and a mask matrix. The mask size information can be used to determine the length of the mask unit, the mask range information can be used to determine the length of the mask region, and the mask matrix can be used to determine the mask unit where the scatterer is located. Based on this, the receiver can directly determine the mask and filter the scatterer information perceived by the receiver based on the mask. This approach can improve data processing efficiency.

[0014] In an optional manner, the first sensing area is an area in an overlapping area between the mask area and the global sensing area where the density of scatterers is greater than or equal to a first threshold.

[0015] In this application, the first sensing area is an area in the overlapping area of ​​the mask area and the global sensing area where the density of scatterers is greater than or equal to the first threshold. Based on this, the complexity of data processing can be reduced and the reliability of data transmission at the receiving end can be guaranteed.

[0016] In an optional manner, the mask reference information includes: the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and the first threshold.

[0017] In this application, mask reference information includes the length of each perceptual sub-region within the global perceptual region, the boundaries of the global perceptual region, the value of each perceptual sub-region within the global perceptual region, and a first threshold. Based on this, the receiving end can determine the mask by referring to this mask parameter information and the receiving end's capabilities (e.g., data transmission capacity). This method determines a mask that better meets the needs of the receiving end.

[0018] In an optional manner, the length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region.

[0019] In the present application, the length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region, which can reduce the computational complexity of the mask region.

[0020] In an optional manner, the receiving end updates the first threshold based on the first threshold and the data transmission capability of the receiving end.

[0021] In this application, the receiving end updates the first threshold based on the data transmission capability of the receiving end. The adjustment based on the first threshold can flexibly adjust the area other than the first perception area in the global perception area, and then adjust the density of the uploaded scatterers to better adapt to the data transmission capability requirements of the receiving end.

[0022] In an optional manner, the mask range information includes: coordinate ranges of boundaries of the mask area on the X axis, Y axis, and Z axis of the world coordinate system.

[0023] In an optional manner, the value of each mask unit is a first value or a second value, wherein the first value indicates that the density of the scatterer is greater than or equal to a first threshold, the second value indicates that the density of the scatterer is less than the first threshold, and the first value is different from the second value.

[0024] In the present application, the value of each mask unit in the mask area is the first value or the second value, based on which the number of scatterers in the mask unit in the mask area can be determined to better filter the scatterer information perceived by the receiving end.

[0025] In an optional manner, the sensed scatterer information is determined based on a sensing signal measurement parameter, where the sensing signal measurement parameter includes at least one of the following: an arrival angle of the sensing signal, a departure angle of the sensing signal, or a transmission path of the sensing signal.

[0026] In this application, the receiving end determines the perceived scatterer information based on the perceived signal measurement parameters, which is simpler.

[0027] In a second aspect, the present application provides a sensing method that can be performed by a transmitting end, which can be a terminal device, a network device, a chip, or a circuit. Optionally, the chip is a terminal device chip, and the circuit is a terminal device circuit. Optionally, the chip is a network device chip, and the circuit is a network device circuit. This application does not specifically limit this.

[0028] The method can be applied to 5G communication systems, 5.5G or future 6G communication systems. This application does not limit this. The method is performed as follows:

[0029] Determine mask reference information, where the mask reference information is used to determine scatterer information in a first perception area, where the first perception area is a partial area in the global perception area, where the density of scatterers in the first perception area is greater than or equal to a first threshold, and the global perception area is used to indicate the perception range; send mask reference information; and receive scatterer information in areas other than the first perception area in the global perception area.

[0030] In an optional manner, the mask reference information includes: mask size information, mask range information, and a mask matrix, where the mask size information is used to refer to the length of each mask unit in the mask area, the mask range information is used to indicate the boundary of the mask area, and the mask matrix is ​​used to indicate the value of each mask unit in the mask area, and the mask area overlaps with the global perception area in whole or in part.

[0031] In an optional manner, the first sensing area is an area in an overlapping area between the mask area and the global sensing area where the density of scatterers is greater than or equal to a first threshold.

[0032] In an optional manner, the mask reference information includes: the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and the first threshold.

[0033] In an optional manner, the length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region.

[0034] In an optional manner, the mask range information includes: coordinate ranges of boundaries of the mask area on the X axis, Y axis, and Z axis of the world coordinate system.

[0035] In an optional manner, the value of each mask unit is a first value or a second value, wherein the first value indicates that the density of the scatterer is greater than or equal to a first threshold, the second value indicates that the density of the scatterer is less than the first threshold, and the first value is different from the second value.

[0036] In a third aspect, an embodiment of the present application provides a communication device, which may be a sensing receiving end or a sensing transmitting end. The communication device has the functions of implementing the first to second aspects above. For example, the communication device includes modules, units, or means corresponding to the steps involved in the first to second aspects above. The functions, units, or means may be implemented by software, or by hardware, or the corresponding software implementation may be executed by hardware.

[0037] In one possible design, the communication device includes a processing unit and a transceiver unit. The transceiver unit can be used to transmit and receive signals to enable communication between the communication device and other devices, for example, the transceiver unit is used to receive mask reference information; the processing unit can be used to perform some internal operations of the communication device. The transceiver unit can be referred to as an input / output unit, a communication unit, etc., and the transceiver unit can be a transceiver; the processing unit can be a processor. When the communication device is a module (such as a chip) in a communication device, the transceiver unit can be an input / output interface, an input / output circuit, or an input / output pin, etc., and can also be referred to as an interface, a communication interface, or an interface circuit, etc.; the processing unit can be a processor, a processing circuit, or a logic circuit, etc.

[0038] In another possible design, the communication device includes a processor and may also include a transceiver, the transceiver is used to send and receive signals, and the processor executes program instructions to complete the method in any possible design or implementation of the first aspect to the second aspect above. The communication device may also include one or more memories, the memories are used to couple with the processor, and the memories can store the necessary computer programs or instructions for implementing the functions involved in the first aspect above. The processor can execute the computer program or instructions stored in the memory, and when the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the first aspect to the second aspect above.

[0039] In another possible design, the communication device includes a processor, which can be coupled to a memory. The memory can store the necessary computer programs or instructions for implementing the functions of the first aspect. The processor can execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the communication device implements the method of any possible design or implementation of the first to second aspects.

[0040] In another possible design, the communication device includes a processor and an interface circuit, wherein the processor is used to communicate with other devices through the interface circuit and execute the method in any possible design or implementation of the first to second aspects above.

[0041] It can be understood that in the third aspect above, the processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. In addition, the above processors can be one or more, and the memories can be one or more. The memory can be integrated with the processor, or the memory and the processor can be set separately. In the specific implementation process, the memory can be integrated with the processor on the same chip, or can be set on different chips respectively. The embodiment of the present application does not limit the type of memory and the setting method of the memory and the processor.

[0042] In a fourth aspect, an embodiment of the present application provides a communication system, which includes the receiving end in the first aspect and the transmitting end in the second aspect.

[0043] In a fifth aspect, the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method described in the first or second aspect. The chip system can be composed of a chip or include a chip and other discrete devices.

[0044] In a sixth aspect, the present application also provides a computer-readable storage medium, in which computer-readable instructions are stored. When the computer-readable instructions are executed on a computer, the computer executes the methods in the first aspect to the second aspect.

[0045] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the methods of the embodiments of the first to second aspects above.

[0046] For the technical effects that can be achieved in the above-mentioned second to seventh aspects, please refer to the description of the technical effects that can be achieved by the corresponding possible design schemes in the above-mentioned first aspect, and this application will not repeat them here. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG1 shows a schematic diagram of a communication system provided by an embodiment of the present application;

[0048] FIG2 shows a schematic diagram of a scenario in which communication and perception are integrated;

[0049] FIG3 shows a schematic diagram of dual-base sensing provided by an embodiment of the present application;

[0050] FIG4 shows a schematic diagram of a single-base sensing method provided by an embodiment of the present application;

[0051] FIG5A shows a schematic diagram of a perception application scenario provided by an embodiment of the present application;

[0052] FIG5B shows a schematic flow chart of a sensing method provided in an embodiment of the present application;

[0053] FIG6 shows a schematic diagram of determining a first sensing area according to an embodiment of the present application;

[0054] FIG7 shows a schematic diagram of a receiving-end feedback scatterer provided in an embodiment of the present application;

[0055] FIG8 shows a schematic diagram of a receiving-end feedback scatterer provided in an embodiment of the present application;

[0056] FIG9 shows a schematic diagram of a mask region provided in an embodiment of the present application;

[0057] FIG10 shows a schematic diagram of a first sensing area provided in an embodiment of the present application;

[0058] FIG11 shows a schematic diagram of updating a first perception area provided by an embodiment of the present application;

[0059] FIG12 shows a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0060] FIG13 shows a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0061] FIG14 shows a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operating methods in the method embodiments can also be applied to device embodiments or system embodiments. Among them, in the description of the present application, unless otherwise specified, the meaning of "multiple" is more than two (including two). Therefore, the implementation of the device and the method can refer to each other, and the repetitions will not be repeated.

[0063] The technical solutions provided in the embodiments of the present application can be applied to 5G systems, or to future communication systems (such as 6G) or other similar communication systems. In addition, the technical solutions provided in the embodiments of the present application can be applied to cellular links, public land mobile networks (PLMN), machine to machine (M2M) networks, Internet of Things (IoT) networks or other networks. It can also be applied to links between devices, such as device to device (D2D) links. D2D links can also be called sidelinks, where sidelinks can also be called side links or side links, etc. In the embodiments of the present application, the above terms all refer to links established between devices of the same type, and their meanings are the same. The so-called devices of the same type can be links between terminal devices, links between base stations, links between relay nodes, etc., and the embodiments of the present application do not limit this.

[0064] Figure 1 is a schematic diagram of a wireless communication system applicable to the present application. As shown in Figure 1 , the wireless communication system may include at least one network device, such as network device 111, network device 112, and network device 113. The wireless communication system may also include at least one terminal device, such as terminal device 121, terminal device 122, terminal device 123, terminal device 124, terminal device 125, terminal device 126, and terminal device 127. The communication method between network devices may be backhaul, such as the communication method between network device 111 and network device 112, or the communication method between network device 111 and network device 113. The communication method between network devices and terminal devices may be enhanced mobile broadband (eMBB), such as the communication method between network device 112 and terminal device 121. The communication method between network devices and terminal devices may be multi-site transmission, such as the communication method between network devices 112, network device 113, and terminal device 124. The communication method between terminal devices may be D2D. For example, the communication method between terminal device 122 and terminal device 125.

[0065] A terminal device may be a device capable of receiving scheduling and instruction information from network devices, providing voice and / or data connectivity to a user, or a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem. The terminal device may communicate with one or more core networks or the Internet via a radio access network (RAN). For example, the terminal device may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device. The terminal device may also be referred to as a subscriber unit (SU), subscriber station (SS), mobile station (MS), remote station (MS), access point (AP), remote terminal (AP), access terminal (AP), user agent (UA), customer premises equipment (CPE), terminal, user equipment (UE), mobile terminal (MT), etc. The terminal device may also be a wearable device. The terminal device may also be a device in a next-generation communication system. For example, terminal devices in 5G networks or terminal devices in future evolved PLMN networks, terminal devices in NR communication systems, etc.Currently, terminal devices may include: mobile phones, tablet computers, laptop computers, PDAs, customer-premises equipment (CPE), mobile internet devices (MIDs), wearable devices (such as smart watches, smart bracelets, and pedometers), in-vehicle equipment (such as cars, bicycles, electric vehicles, airplanes, ships, trains, and high-speed trains), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, and electric meters), intelligent robots, workshop equipment, wireless terminals in self-driving vehicles, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and flying devices (such as intelligent robots, hot air balloons, drones, and airplanes). The terminal device may also be other devices with terminal functions. For example, the terminal device may also be a device that serves as a terminal in D2D communication.

[0066] A network device is an entity on the network side that transmits or receives signals. For example, a transmission reception point (TRP) or a gNB. A network device can be an AP in a wireless local area network (WLAN), a base transceiver station (BTS) in a global system for mobile communication (GSM) or code division multiple access (CDMA), a base station (nodeB, NB) in wideband code division multiple access (WCDMA), or an evolved node B (eNB or eNodeB) in long-term evolution (LTE). A network device can also be a relay station or access point, or a network device in an in-vehicle device, wearable device, or 5G network, or a network device in a future evolved PLMN, or a device such as a gNodeB / gNB in ​​a NR system. In some deployments, a gNB can include a CU and a DU. The CU implements some of the gNB's functions, and the DU implements some of the gNB's functions. For example, the CU is responsible for processing non-real-time protocols and services. For example, it implements radio resource control (RRC), service data adaptation protocol (SDAP), and packet data convergence protocol (PDCP) layer functions. The DU is responsible for processing physical layer protocols and real-time services. For example, it implements radio link control (RLC), medium / media access control (MAC), and physical (PHY) layer functions. The gNB may also include an active antenna unit (AAU). The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling (such as RRC layer signaling) can also be considered to be sent by the DU, or by both the DU and the AAU. It is understood that a network device can be a device that includes one or more of a CU node, a DU node, or an AAU node.In addition, the CU may be a network device in an access network (radio access network, RAN), and the CU may be a network device in a core network (core network, CN), which is not limited in this application. In addition, in an embodiment of the present application, the network device provides services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell may be a cell corresponding to a network device (for example, a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. For example, the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc. Since the small cell has the characteristics of small coverage and low transmission power, the small cell can provide high-speed data transmission services. In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For example, in an open radio access network (ORAN) system, CU may also be referred to as O-CU (open CU), DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples for description. Any of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0067] In order to better illustrate the solution of this application, the following technical terms involved in this application are explained:

[0068] 1) Communication and perception integration

[0069] Among them, communication and perception integration can be called ISAC (integrated sensing and communications), ICAS (integrated communications and sensing), JSAC (joint sensing and communications), JCAS (joint communications and sensing), etc. This is only an example and does not specifically limit the name of communication and perception integration.

[0070] Communication and perception integration combines communication and perception, enabling future communication systems to simultaneously perform both. While transmitting information over wireless channels, these systems proactively learn and analyze channel characteristics to perceive the physical characteristics of the surrounding environment, thereby enhancing these two functions. Communication refers to the transmission of information between two or more communication devices. Perception refers to the detection of physical environment parameters based on communication signals, such as ranging and speed measurement. As shown in Figure 2, base station transmission signals can be used to sense the surrounding environment and assist in designing communication links to avoid obstacles (such as cars), improving communication performance.

[0071] The following uses ISAC, an integrated communication and perception system, as an example to illustrate that ISAC uses a signal that meets both communication and perception signal requirements. For example, an orthogonal frequency division multiplexing (OFDM) signal. The ISAC transmitter transmits an OFDM signal to the perception target to be perceived (hereinafter referred to as a scatterer, the perception target and scatterer are equivalent and will not be explained in detail here). The OFDM signal is reflected by the perception target to generate an echo signal, and there is a time delay between the echo signal and the transmission signal. At the ISAC receiver, a range image is obtained by performing time domain or frequency domain digital signal processing on the echo signal and the transmission signal. Then, a delay estimate is obtained by searching for peaks in the range image. Finally, the distance of the perception target is determined based on the delay estimate.

[0072] 2) Perception

[0073] Perception is divided into dual-base perception and single-base perception. Dual-base perception includes two sensing devices. After one sensing device transmits a signal, it is reflected by the sensing target, and the other sensing device receives the signal to obtain a sensing result. Single-base perception includes one sensing device. After the sensing device transmits a signal, it is reflected by the sensing target, and the sensing device receives the reflected signal to obtain a sensing result (also called scatterer information or sensing data). The sensing result includes: signal transmission distance, relative motion speed of the sensing target, angle of the sensing target relative to the antenna receiving array, or signal strength and other information. This is only an example and is not specifically limited. The sensing device can determine the location information of the sensing target based on the sensing result, and can also directly report the sensing result to other devices so that other devices can determine the location information of the sensing target. How to apply the sensing result is not specifically limited here.

[0074] The schematic diagram of dual-base sensing can be understood with reference to Figure 3. Figure 3 (a) shows that the sensing target within the sensing area is a car, the sensing device transmitting the signal is a base station, and the sensing device receiving the signal is a UE. After the base station transmits the signal, it reflects off the car to obtain a reflected signal, which is received by the UE to obtain a sensing result. Figure 3 (b) shows that the sensing target within the sensing area is a car, the sensing device transmitting the signal is a UE, and the sensing device receiving the signal is a base station. After the UE transmits the signal, it reflects off the car to obtain a reflected signal, which is received by the base station to obtain a sensing result. Figure 3 (c) shows that the sensing target within the sensing area is a car, the sensing device transmitting the signal is base station 1, and the sensing device receiving the signal is base station 2. After base station 1 transmits the signal, it reflects off the car to obtain a reflected signal, which is received by base station 2 to obtain a sensing result. Figure 3 (d) shows that the sensing target within the sensing area is a car, the sensing device transmitting the signal is UE1, and the sensing device receiving the signal is UE2. After UE1 transmits the signal, it reflects off the car to obtain a reflected signal, which is received by UE2 to obtain a sensing result. In Figure 3 (e), the sensing device needs to receive instructions from the control device before it can transmit a signal. The control end is the base station, the transmitting sensing device is UE1, the receiving sensing device is UE2, and the sensing target within the sensing area is a car. After the base station issues a signal transmission instruction to UE1, UE1 transmits a signal, which reflects off the car as a reflected signal, which is then received by UE2. UE2 reports the sensing result based on the base station's instruction. In Figure 3 (f), the sensing device needs to receive instructions from the control device before it can transmit a signal. The control end is base station 3, the transmitting sensing device is base station 1, and the receiving sensing device is base station 2. The sensing target within the sensing area is a car. After base station 3 issues a signal transmission instruction to base station 1, base station 1 transmits a signal, which reflects off the car as a reflected signal, which is then received by base station 2. Base station 2 reports the sensing result based on base station 3's instruction.

[0075] Figure 4 illustrates a schematic diagram of single-base sensing. Figure 4 (a) shows a car as the sensing target within the sensing area, and a base station as the sensing device. After the base station transmits a signal, it reflects off the car, producing a reflected signal. The reflected signal is then received by the base station to obtain the sensing result. Figure 4 (b) shows a car as the sensing target within the sensing area, and a user equipment (UE) as the sensing device. After the UE transmits a signal, it reflects off the car, producing a reflected signal. The reflected signal is then received by the UE to obtain the sensing result.

[0076] It should be noted that the base station in Figures 3 and 4 above can also be replaced by a sensing management function (SMF), or the base station and SMF are coupled into the same device, or the base station and SMF are separate devices. After the base station receives the parameters of the sensing signal (for example, an OFDM signal with a frequency of F1) from the SMF, it performs corresponding sensing operations based on the parameters of the sensing signal. This application is not specifically limited here.

[0077] 3) Scatters

[0078] Scatterers are passive devices that cannot send or receive signals, but can reflect, diffract, or scatter signals. Scatterers can be vehicles, trees, animals, and the like. This is for illustrative purposes only and is not intended to be limiting. Scatterers may also be referred to as sensing targets, scattering points, reflectors, diffractors, reflection points, or diffraction points, and are not specifically defined herein. Any target that, after receiving a sensing signal from a sensing device and then directly reflecting (or scattering or diffracting) it and transmitting it to the current sensing device or another sensing device is considered a scatterer in this application.

[0079] It should be noted that the size of the scatterer can be flexibly set. For example, the car in Figure 3 or Figure 4 can be regarded as a scatterer as a whole, and parts of the car can be regarded as scatterers separately, and the four wheels of the car can be regarded as different scatterers. This application does not specifically limit how to define the size information of the scatterer. For example, when perception is used for positioning, the car can be regarded as a scatterer as a whole, and when perception is used for reconstruction, parts of the car can be regarded as different scatterers respectively, so as to reconstruct the outline of the car. In specific applications, the size of the scatterer can be determined based on the specific needs of perception, and is not specifically limited here.

[0080] Based on the architecture diagram of the communication system shown in FIG1 and the scenario diagrams shown in FIG3 and FIG4 , FIG5A is an architecture diagram of an ISAC system exemplarily provided in the present application, wherein the system includes a base station and a UE, and each base station can be used to serve one or more UEs. For example, in single-base sensing, the base station can act as a transmitter and a receiver to autonomously transmit and receive sensing signals to achieve sensing of scattering points in the spatial environment, for example, base station 2 in FIG5A . In dual-base sensing, the base station acts as a transmitter to transmit sensing signals, and the UE acts as a receiver to receive sensing signals, and then the UE senses the scattering points in the spatial environment based on the received sensing signals, for example, base station 1 and UE1, or base station 2 and UE2 in FIG5A . FIG5A takes the sensing target as a large tree as an example, and base station 1, base station 2, and UE1 respectively upload the sensed scatterer information to the control device, so that the control device integrates the scatterer information from multiple sensing devices (UE1, base station 2, and UE2) to determine the location information or outline information of the large tree.

[0081] Usually, each sensing device will store the sensed scatterer information by itself, and upload all the sensed scatterer information to the control device (the control device can be a device used to process scatterer information from multiple sensing devices. The control device can be a data management center, or it can be one of the sensing devices that performs perception, which is not specifically limited here. When the control device is one of the sensing devices, it is usually a sensing device with strong data processing capabilities). The sensing device may transmit a large amount of scatterer information to the control device, which on the one hand will occupy a large amount of storage space of the sensing device, and on the other hand will occupy a large amount of transmission overhead.

[0082] Based on this, the present application provides a perception method to reduce the transmission overhead of scatterer information. Referring to FIG5B , this method can be performed through interaction between a receiving end and a transmitting end. The receiving end (or transmitting end) can be a terminal device, a network device, a chip, or a circuit. Optionally, the chip is a chip of a terminal device, and the circuit is a circuit of a terminal device. Optionally, the chip is a chip of a network device, and the circuit is a circuit of a network device. This application does not specifically limit this. The receiving end is typically provided with a perception module that can send a perception signal to a target object and obtain an echo signal based on the reflection of the target object. The receiving end can determine the location information of the target object based on the perception signal and the echo signal. The receiving end can be understood as the two perception devices in the dual-static perception described in FIG3 , or as one perception device in the monostatic perception described in FIG4 , without specific limitation. The transmitting end can be understood as the control device described in FIG5A . In specific applications, the transmitting end can issue a perception task to the receiving end, so that the receiving end can perceive and obtain scatterer information based on the perception task. For example, if the perception task is to determine objects within a perception area, the receiving end can send a perception signal to the perception area to determine the objects within the perception area.

[0083] This method can be applied to 5G communication systems, 5.5G or future 6G communication systems. In specific applications, the number of receiving terminals can be one or more, which is not specifically limited in this application. Execute as follows:

[0084] Step 501: The receiving end determines a global perception area, where the global perception area is used to indicate a perception range.

[0085] It should be noted that the global perception area is usually the perception range of the receiving end, and the global perception area can be indicated by a geographical location or a cell identifier, etc., and is not specifically limited here. In an optional embodiment, the transmitting end sends indication information of the global perception area (for example, an indication identifier of the global area, a geographical location of the global area, etc.) to the receiving end through communication signaling, so that the receiving end can determine the global perception area. In another optional embodiment, the transmitting end sends indication information of the first area through communication signaling, and the receiving end obtains the indication information of the first area and determines the global perception area in combination with the perception capability of the receiving end (that is, the actual range of the area that can be perceived). In this case, after the receiving end determines the global perception area, it will usually report it to the transmitting end. For example, the first area is an area with a coordinate origin of (0, 0, 0) and a radius of 50 meters, and the area that the receiving end can actually perceive is an area with a coordinate origin of (0, 2, 3) and a radius of 45 meters. Then the overlapping area of ​​the first area and the area that the receiving end can actually perceive can be determined as the global perception area. How to determine the global perception area is not specifically limited in this application, and can be flexibly determined based on the needs of specific applications.

[0086] In addition, when the transmitting end is a network device and the receiving end is a terminal device, the communication signaling can be downlink control information (DCI), radio resource control (RRC), and physical downlink shared channel (PDSCH); when the transmitting end is a terminal device and the receiving end is a network device, the communication signaling can be a physical uplink shared channel (PUSCH) and can also be uplink control information (UCI); when the transmitting end is a network device and the receiving end is a network device, the communication signaling can be transmitted through the Xn interface, which is not specifically limited in this application. The following situations involving communication signaling are all understood with reference to this, and are not specifically limited in this application.

[0087] In step 502, the transmitter determines mask reference information, where the mask reference information is used to determine scatterer information in a first sensing area, which is a partial area of ​​the global sensing area. The density of scatterers in the first sensing area is greater than or equal to a first threshold.

[0088] The transmitter can refer to historical scatterer information in the global perception area to determine the mask reference information. The historical scatterer information can be understood as the scatterer information in the global perception area stored and accumulated by the communication system during historical perception measurements, i.e., the scatterer information in the global perception area obtained by the transmitter before executing the perception method of FIG. 5B .

[0089] The first perception area can be determined by the following example. For example, the transmitting end determines the distribution of scatterers in the global perception area based on the scatterer information fed back by other receiving ends, and determines the area where the density of scatterers is greater than or equal to the first threshold as the first perception area. Specifically, the first threshold can be an empirical value, or it can be a value estimated by the transmitting end in combination with the number of scatterers currently obtained. For example, the area of ​​the current global perception area is 100 square meters, and the total number of scatterers obtained is 500. Assuming that the scatterers are evenly distributed in the global perception area, the number of scatterers per square meter is 5 (500 / 100), then the first threshold can be set to 5. This is only an example and does not specifically limit how to set the first threshold.

[0090] It should be noted that the density of scatterers in the above-mentioned first perception area is greater than or equal to the first threshold value, which can also be understood as the number of scatterers in each perception sub-area in the first perception area is greater than or equal to the first threshold value. Among them, the perception sub-area can be a square area, a regular pentagonal area, a regular hexagonal area, a circular area, etc., and the shape of the perception sub-area is not specifically limited here. Usually, the shape and size of the perception sub-areas in the first perception area are the same. However, in special cases, the shapes of the perception sub-areas in the first perception area may be different. When the shapes of the perception sub-areas in the first perception area are different, the density of scatterers in each perception sub-area is greater than or equal to the first threshold value. This is not specifically limited here. In addition, the perception sub-area can also be called a perception sub-unit, which is not limited in this application.

[0091] As shown in Figure 6, the transmitter can determine the first perception area based on the scatterer information fed back by multiple sensing devices (i.e., other receiving ends). After the transmitter determines the scatterer information in the global perception area, it spatially grids the global perception area to obtain grid data, in which the side length of each grid unit is the same. Afterwards, the transmitter determines the number of scatterers in each grid unit and sets a first threshold. In Figure 6, the first threshold is 2, and the grid unit with the number of scatterers greater than 2 in the grid unit is used as the first perception area. This is only an example of how to determine the first perception area.

[0092] As described in Table 1 below, when the historical scatterer information in the global area is a feature-based data mode, Data_Format = 0. The specific contents of each flag bit of the scatterer information Scatters Info are shown in Table 1. Among them, the contents of the site information Site_Info (i.e., the information of the sensing device) include: sensing link ID, transmitter ID TX ID, receiver ID RX ID (if the sensing device is a monostatic sensing device, the transmitter ID and receiver ID are usually the same; if the sensing device is a bistatic sensing device, the transmitter ID and receiver ID are usually different), time Time (i.e., the time when the sensing operation is performed), orientation (i.e., the direction of the sensing device's antenna), and configuration information config / capability (for example, the frequency, bandwidth, subcarrier, and other configuration parameters of the sensing signal used to perform the sensing operation). At this time, the content of the scatterer data Data is a set of information of N scatterers {Scatter 1, Scatter 2, ..., Scatter N}, and the information content of each scatterer in the set includes: scatterer number scatter ID (usually each sensing device can sort the scatterers by itself and number them according to the sorting order, which is not specifically limited here. In addition, the number of digits of the scatterer number is usually the same), scatterer three-dimensional coordinates (x, y, z), angle angle (that is, the departure angle or arrival angle of the path where the scatterer is located), likelihood likelihood (that is, the probability of the accuracy of the scatterer position), power power (that is, the power of the path of the scatterer), velocity velocity (that is, the movement speed of the scatterer), scatterer type scatter_type, type confidence confidence (that is, the credibility of the scatterer type). If the historical scatterer information in the global perception area is indicated in the manner of Table 1, then the area where the scatterer density is greater than or equal to the first threshold is the first perception area. In specific applications, the area where the density of scatterers is equal to the first threshold can be classified as the first perception area, or can be classified as the second perception area, which can be flexibly adjusted based on the actual application situation.

[0093] Table 1

[0094] As described in Table 2 below, when the historical scatterer information in the global region is in a grid-based data mode, Data_Format = 1. The specific contents of each flag bit of the scatterer information Scatters Info are shown in Table 2. The contents of the site information Site_Info (i.e., the information of the sensing device) include: sensing link ID, transmitter ID TX ID, receiver ID RX ID (if the sensing device is a monostatic sensing device, the transmitter ID and receiver ID are usually the same; if the sensing device is a bistatic sensing device, the transmitter ID and receiver ID are usually different), time Time (i.e., the time when the sensing operation is performed), orientation, and configuration information config / capability. At this time, the contents of the scatterer data Data include the grid size Grid_size (e.g., the default value is 1 meter), the grid range Grid_range (three-dimensional coordinate range), and the grid matrix Grid_Matrix. If the historical scatterer information in the global sensing region is indicated in the manner of Table 2, the scatterer density can also be understood as the number of scatterers, and the area in each grid cell that is greater than or equal to the first threshold is the first sensing area. In specific applications, the area where the number of scatterers is equal to the first threshold can be classified as the first perception area, or can be classified as the second perception area, which can be flexibly adjusted based on the actual application situation.

[0095] Table 2

[0096] In step 503, the transmitting end sends the mask reference information, and the receiving end receives the mask reference information accordingly.

[0097] Specifically, the transmitting end may send the mask reference information to the receiving end through communication signaling.

[0098] In step 504, the receiving end transmits the scatterer information in the areas other than the first sensing area in the global sensing area based on the mask reference information. Accordingly, the receiving end receives the scatterer information.

[0099] After the receiving end obtains the scatterer information by perceiving the global perception area, it can filter out the scatterer information in the first perception area based on the mask reference information, and only upload the scatterer information in the area other than the first perception area in the global perception area. As shown in Figure 7, the receiving end performs a perception operation on the global perception area to determine M scatterer information in the global area. After determining the first perception area in the global perception area based on the mask reference information, the M scatterer information is filtered to determine N scatterer information in the area other than the first perception area in the global perception area, where N is less than M. The receiving end reports the N scatterer information to the receiving end. Specifically, the scatterer information in the area other than the first perception area in the global perception area can be indicated by the feature-based data mode in Table 1 or by the grid-based data mode in Table 2, which is not specifically limited in this application.

[0100] In addition, the receiving end can determine the perceived scatterer information based on the perception signal measurement parameters. The perception signal measurement parameters include at least one of the following: the perception signal's angle of arrival (i.e., the angle between the perception signal and the scatterer upon arrival, typically with the 0° direction of the positive x-axis as the horizontal line), the perception signal's angle of departure (i.e., the angle between the perception signal and the scatterer upon departure), or the perception signal's transmission path (if the receiving end is a bistatic sensing device, the transmission path is the perception signal's transmission path, for example, the perception signal is received by the sensing device after a single reflection from the scatterer, or the perception signal is received by the sensing device after a reflection from two scatterers).

[0101] In the present application, since the receiving end obtains the mask reference information, the scatterer information in the first perception area perceived by the receiving end can be filtered based on the mask reference information, and only the scatterer information in the area other than the first perception area in the global perception area can be transmitted. Based on this, the amount of data transmitted can be reduced, and the data transmission overhead can be reduced. In addition, the scatterer density in the first perception area in the global perception area of ​​the present application is greater than or equal to the first threshold, that is, the density of the scatterers is relatively large. When reconstructing the environment, the reconstruction effect of the environment is usually not affected when the environment is reconstructed based on the historical scatterer information of the first perception area. Therefore, the receiving end of the present application transmits the scatterer information in the area other than the first perception area in the global perception area, which reduces the data transmission overhead while ensuring the reconstruction effect of the environment.

[0102] To more clearly illustrate how the receiver determines the first sensing area based on the mask reference information, the following two cases are described:

[0103] Case 1: The receiving end directly determines the first perception area based on the mask reference information

[0104] Among them, the mask reference information includes: mask size information, mask range information, and mask matrix. Specifically, the mask size information is used to refer to the length of each mask unit in the mask area, and the mask unit can be understood as each grid in the data pattern of the grid. The length of the mask unit is usually the same as the length of each perception sub-area in the global perception area (when the global perception area is indicated based on the data pattern of the grid, each perception sub-area is equivalent to each grid), based on which the computational complexity of the mask area can be reduced. Specifically, the mask range information is used to indicate the boundary of the mask area, and the mask range information includes: the coordinate range of the boundary of the mask area in the X-axis, Y-axis and Z-axis of the world coordinate system respectively. For example, if the length of each mask unit is 1 meter, and the boundaries of the mask area are [0, 10.5] in the X-axis direction, [0, 10.5] in the Y-axis direction, and [0, 10.3] in the Z-axis direction, then the mask area can be an area determined by a total of 1000 (10*10*10) mask units with the origin [0, 0, 0] and including 10 mask units in the X-axis, Y-axis, and Z-axis directions respectively. Alternatively, the mask area can be an area determined by a total of 1331 (11*11*11) mask units with the origin [0, 0, 0] and including 11 mask units in the X-axis, Y-axis, and Z-axis directions respectively. This is only an example and does not specifically limit the mask area.

[0105] Specifically, the mask matrix is ​​used to indicate the value of each mask unit in the mask area. The value of each mask unit is a first value or a second value, wherein the first value indicates the number of scatterers and the density of the scatterers is greater than or equal to the first threshold, the second value indicates the number of scatterers and the density of the scatterers is less than the first threshold, and the first value is different from the second value. For example, the first value is 1, the second value is 2, etc., which is only an example and does not specifically limit the values ​​of the first value and the second value. Based on the first value and the second value, the number of scatterers in the mask unit in the mask area can be determined to better filter the scatterer information perceived by the receiving end.

[0106] As shown in Table 3 below, the specific contents of each flag bit of the mask reference information Mask Info are shown in Table 3, including mask size information Mask_gridsize, mask range information Mask_range, and mask matrix Mask Matrix.

[0107] Table 3

[0108] In this application, mask reference information includes mask size information, mask range information, and a mask matrix. The mask size information can be used to determine the length of the mask unit, the mask range information can be used to determine the length of the mask region, and the mask matrix can be used to determine the mask unit where the scatterer is located. Based on this, the receiver can directly determine the first sensing area and filter the scatterer information perceived by the receiver based on this first sensing area. This approach can improve data processing efficiency.

[0109] Case 2: The receiving end indirectly determines the first perception area based on the mask reference information

[0110] The mask reference information includes: the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and a first threshold. The receiving end can determine the mask region based on the mask reference information.

[0111] For example, the length of each perception sub-area in the global perception area is 1 meter, and the boundaries of the global perception area are [0, 10.5] in the X-axis direction, [0, 10.5] in the Y-axis direction, and [0, 10.3] in the Z-axis direction. Then the mask area can be an area determined by 1000 (10*10*10) units with the origin [0, 0, 0] and 10 units in the X-axis, Y-axis, and Z-axis directions respectively. Alternatively, the mask area can be an area determined by 1331 (11*11*11) units with the origin [0, 0, 0] and 11 units in the X-axis, Y-axis, and Z-axis directions respectively. This is only an example and does not specifically limit the mask area.

[0112] In this application, mask reference information includes the length of each perceptual sub-region within the global perceptual region, the boundaries of the global perceptual region, the value of each perceptual sub-region within the global perceptual region, and a first threshold. Based on this, the receiving end can determine the first perceptual region by referring to this mask parameter information and the receiving end's capabilities (e.g., data transmission capacity). This method determines a first perceptual region that better meets the needs of the receiving end.

[0113] In an optional manner, the receiving end updates the first threshold based on the first threshold and the receiving end's data transmission capability. For example, if the receiving end currently has less load information and a stronger data transmission capability, the receiving end may increase the first threshold to reduce the proportion of the first perception area in the global perception area and transmit more scatterer information. If the receiving end currently has more complex information and a weaker data transmission capability, the receiving end may lower the first threshold to increase the proportion of the first perception area in the global perception area and transmit less scatterer information. As shown in (a) of Figure 8 , the receiving end obtains from the transmitting end the length of each perception sub-area in the global perception area, the boundary of the global perception area, the value of each perception sub-area in the global perception area, and the first threshold (assuming it is 3). If the receiving end does not adjust the first threshold, the first perception area determined is as shown by fill 1. If the receiving end currently has a stronger data processing capability, the first threshold may be increased to 5. Then, the first perception area (as shown by fill 2) becomes significantly smaller than the area determined without adjusting the first threshold. As shown in Figure 8(b), the receiving end obtains the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and the first threshold (assuming it is 3) from the transmitting end. If the receiving end does not adjust the first threshold, the first perceptual region determined is as shown by fill 1. If the current data processing capability of the receiving end is weak, the first threshold can be lowered to 2. In this way, the first perceptual region (as shown by fill 3) becomes significantly larger than the region determined without adjusting the first threshold.

[0114] In this application, the receiving end updates the first threshold based on the data transmission capability of the receiving end. The adjustment based on the first threshold can flexibly adjust the area other than the first perception area in the global perception area, and then adjust the number of uploaded scatterers to better adapt to the data transmission capability requirements of the receiving end.

[0115] It should be noted that the mask areas mentioned in the above cases 1 and 2 may overlap completely or partially with the global perception area, and this application does not specifically limit this. In the above case 1, after the transmitting end determines the mask reference information (that is, the relevant information of the mask area), it is directly sent to the receiving end. The receiving end directly determines the mask area based on the mask reference information. The mask area is determined by the transmitting end in combination with the information of the scatterer in the global perception area, and the receiving end does not need to adjust the mask area. In the above case 2, after the receiving end receives the mask reference information, it determines the mask area in combination with the actual perception of the receiving end. For example, the boundaries of the global perception area are in the X-axis direction [0, 10] and the Y-axis direction [0, 10]. The boundaries of the area directly perceived by the receiving end are in the X-axis direction [3, 12] and the Y-axis direction [3, 12]. Then the boundaries of the mask area can be in the X-axis direction [3, 10] and the Y-axis direction [3, 10]. This is only an example and does not limit the relationship between the mask area and the global perception area.

[0116] As shown in Figure 9(a), the global perception region completely overlaps with the mask region, where the boundaries of the global perception region are in the X-axis direction [0, 10] and the Y-axis direction [0, 10], and the boundaries of the mask region are in the X-axis direction [0, 10] and the Y-axis direction [0, 10]. As shown in Figure 9(b), the global perception region partially overlaps with the mask region, where the boundaries of the global perception region are in the X-axis direction [0, 10] and the Y-axis direction [0, 10], and the boundaries of the mask region are in the X-axis direction [1, 11] and the Y-axis direction [1, 11]. As shown in Figure 9(c), the global perception region partially overlaps with the mask region, where the boundaries of the global perception region are in the X-axis direction [0, 10] and the Y-axis direction [0, 10], and the boundaries of the mask region are in the X-axis direction [1, 9] and the Y-axis direction [1, 9].

[0117] In addition, the first sensing area is the area in the overlapping region of the masked area and the global sensing area where the density of scatterers is greater than or equal to a first threshold. As shown in Figure 10, the global sensing area partially overlaps the masked area, where the boundaries of the global sensing area are the X-axis direction [0, 10] and the Y-axis direction [0, 10], and the boundaries of the masked area are the X-axis direction [1, 9] and the Y-axis direction [1, 9]. The density of scatterers in the first sensing area is greater than or equal to a threshold (Figure 10 uses the first threshold of 5 as an example). Based on this, the complexity of data processing can be reduced and the reliability of data transmission at the receiving end can be guaranteed.

[0118] It should also be noted that the above-mentioned mask reference information can be continuously iteratively updated as the scatterer information in the global perception area accumulated by the transmitter changes. This is not specifically limited here. For example, the first perception area (the first perception area is an area where the number of scatterers is greater than or equal to 3) determined by the mask reference information sent by the transmitter to the receiver is shown in Figure 11. The transmitter receives scatterer information fed back from multiple receivers, and the transmitter updates the mask reference information based on this. The first perception area determined after the transmitter updates the mask reference information changes, as shown in Figure 11. This is only an example. As the transmitter accumulates more scatterer information, the mask reference information is also continuously updated, based on this, it is more adapted to the needs of the perception service.

[0119] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of device interaction. It is understandable that, in order to implement the above functions, each device may include a hardware structure and / or software module that performs each function. Those skilled in the art should easily appreciate that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0120] In the embodiments of the present application, the functional units of the device can be divided according to the above method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software functional units.

[0121] In the case of using an integrated unit, Figure 12 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application. As shown in Figure 12, the communication device 1200 may include: a processing unit 1201 and a transceiver unit 1202. The processing unit 1201 is used to control and manage the operations of the communication device 1200. The transceiver unit 1202 is used to support communication between the communication device 1200 and other devices. Optionally, the transceiver unit 1202 may include a receiving unit and / or a sending unit, respectively, for performing receiving and sending operations. Optionally, the communication device 1200 may also include a storage unit for storing program code and / or data of the communication device 1200. The transceiver unit may be referred to as an input / output unit, a communication unit, etc. The transceiver unit may be a transceiver. The processing unit may be a processor. When the communication device is a module (such as a chip) in a communication device, the transceiver unit may be an input / output interface, an input / output circuit, or an input / output pin, etc. The transceiver unit may also be referred to as an interface, a communication interface, or an interface circuit, etc. The processing unit may be a processor, a processing circuit, or a logic circuit, etc. Exemplarily, the communication device may be the aforementioned transmitting end or receiving end, etc.

[0122] The communication device may be the terminal device or the network device in the above embodiments, for example, the terminal device or the communication module in the terminal device, or the circuit or chip responsible for the communication function in the terminal device.

[0123] In one possible design, when the communication device 1200 is a terminal device or a communication module in a terminal device, the functions of the processing unit 1201 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a system-on-chip (SoC) chip or SIP chip containing a modem core. The functions of the transceiver unit 1202 can be implemented by a transceiver circuit.

[0124] In one possible design, when the communication device 1200 is a circuit or chip responsible for communication functions in a terminal device, such as a modem chip or a system-on-chip (SoC) chip or SIP chip containing a modem core, the functions of the processing unit 1201 can be implemented by a circuit system including one or more processors or processor cores in the aforementioned chip. The functions of the transceiver unit 1202 can be implemented by an interface circuit or data transceiver circuit on the aforementioned chip.

[0125] When the above-mentioned communication device is a module applied to a base station, the base station module implements the functions of the base station in the above-mentioned method embodiment. The base station module receives information from other modules in the base station (such as a radio frequency module or antenna), and the information is sent by the UE to the base station; or the base station module sends information to other modules in the base station (such as a radio frequency module or antenna), and the information is sent by the base station to the UE. The base station module here can be the baseband chip of the base station, or it can be a DU or other module. The DU here can be an O-DU in the O-RAN architecture.

[0126] In one embodiment, the communication device 1200 is a receiving end, the processing unit 1201 is used to determine a global perception area, and the global perception area is used to indicate a perception range; the transceiver unit 1202 is used to receive mask reference information, and the mask reference information is used to determine scatterer information in a first perception area, the first perception area is a partial area in the global perception area, and the density of scatterers in the first perception area is greater than or equal to a first threshold; the scatterer information in areas other than the first perception area in the global perception area is transmitted based on the mask reference information.

[0127] In an optional manner, the mask reference information includes: mask size information, mask range information, and a mask matrix, where the mask size information is used to refer to the length of each mask unit in the mask area, the mask range information is used to indicate the boundary of the mask area, and the mask matrix is ​​used to indicate the value of each mask unit in the mask area, and the mask area overlaps with the global perception area in whole or in part.

[0128] In an optional manner, the first sensing area is an area in an overlapping area between the mask area and the global sensing area where the density of scatterers is greater than or equal to a first threshold.

[0129] In an optional manner, the mask reference information includes: the length of each perception sub-area in the global perception area, the boundary of the global perception area, the value of each perception sub-area in the global perception area, and a first threshold; the processing unit 1201 is also used to determine the mask area based on the mask reference information, and the mask area overlaps with the global perception area in whole or in part.

[0130] In an optional manner, the length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region.

[0131] In an optional manner, the receiving end updates the first threshold based on the first threshold and the data transmission capability of the receiving end.

[0132] In an optional manner, the mask range information includes: coordinate ranges of boundaries of the mask area on the X axis, Y axis, and Z axis of the world coordinate system.

[0133] In an optional manner, the value of each mask unit is a first value or a second value, wherein the first value indicates that the density of the scatterer is greater than or equal to a first threshold, the second value indicates that the density of the scatterer is less than the first threshold, and the first value is different from the second value.

[0134] In an optional manner, the processing unit 1201 is further configured to determine the perceived scatterer information based on a perception signal measurement parameter, where the perception signal measurement parameter includes at least one of the following: an arrival angle of the perception signal, a departure angle of the perception signal, or a transmission path of the perception signal.

[0135] In another embodiment, the communication device 1200 is a transmitting end, the processing unit 1201 is used to determine the mask reference information, the mask reference information is used to determine the scatterer information in the first perception area, the first perception area is a partial area of ​​the global perception area, the density of the scatterers in the first perception area is greater than or equal to the first threshold, and the global perception area is used to indicate the perception range; the transceiver unit 1202 is used to send the mask reference information; and receive the scatterer information in areas other than the first perception area in the global perception area.

[0136] In an optional manner, the mask reference information includes: mask size information, mask range information, and a mask matrix, where the mask size information is used to refer to the length of each mask unit in the mask area, the mask range information is used to indicate the boundary of the mask area, and the mask matrix is ​​used to indicate the value of each mask unit in the mask area, and the mask area overlaps with the global perception area in whole or in part.

[0137] In an optional manner, the first sensing area is an area in an overlapping area between the mask area and the global sensing area where the density of scatterers is greater than or equal to a first threshold.

[0138] In an optional manner, the mask reference information includes: the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and the first threshold.

[0139] In an optional manner, the length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region.

[0140] In an optional manner, the mask range information includes: coordinate ranges of boundaries of the mask area on the X axis, Y axis, and Z axis of the world coordinate system.

[0141] In an optional manner, the value of each mask unit is a first value or a second value, wherein the first value indicates that the density of the scatterer is greater than or equal to a first threshold, the second value indicates that the density of the scatterer is less than the first threshold, and the first value is different from the second value.

[0142] Figure 13 shows a simplified schematic diagram of the terminal device provided in this application. For ease of understanding and illustration, Figure 13 uses a mobile phone as an example of a terminal device. As shown in Figure 13, the terminal device includes a processor system, memory, radio frequency circuitry, an antenna, and input / output devices.

[0143] In one embodiment, the processor system can be packaged as a single processor chip, such as a SoC chip or a SIP chip. In another embodiment, the processor system can be a system consisting of multiple chips, wherein the baseband processor can be packaged as a single chip, or packaged as a single chip with part or all of the RF processing system. The processor is primarily used to process communication protocols and communication data, control terminal devices, execute software programs, and process software program data.

[0144] Memory is mainly used to store software programs and data.

[0145] Radio frequency circuits are mainly used for conversion between baseband signals and radio frequency signals and for processing radio frequency signals.

[0146] Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.

[0147] Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by terminal devices and output data to terminal devices.

[0148] It should be noted that some types of terminal devices may not have input and output devices.

[0149] When data needs to be sent, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the RF circuit. The RF circuit then performs RF processing on the baseband signal and transmits it via the antenna in the form of electromagnetic waves. When data is sent to a terminal device, the RF circuit receives the RF signal via the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes it.

[0150] For ease of explanation, Figure 13 shows only one memory and processor. In actual terminal device products, one or more processors and one or more memories may exist. Memory may also be referred to as a storage medium or storage device. The memory may be provided independently of the processor or integrated with the processor, and this is not limited in the present embodiment.

[0151] In the embodiment of the present application, the antenna and radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device.

[0152] As shown in Figure 13, terminal device 1300 includes a transceiver unit 1310 and a processing unit 1320. Transceiver unit 1310 may also be referred to as a transceiver, transceiver, transceiver device, etc. Processing unit 1320 may also be referred to as a processor, processing board, processing module, processing device, etc.

[0153] Alternatively, the device in the transceiver unit 1310 that implements the receiving function may be considered a receiving unit, and the device in the transceiver unit 1310 that implements the transmitting function may be considered a transmitting unit. That is, the transceiver unit 1310 includes a receiving unit and a transmitting unit. The transceiver unit may also be sometimes referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving unit may also be sometimes referred to as a receiver, a receiver, or a receiving circuit. The transmitting unit may also be sometimes referred to as a transmitter, a transmitter, or a transmitting circuit.

[0154] It should be understood that the transceiver unit 1310 is used to perform the sending and receiving operations of the terminal device in the above method embodiment, and the processing unit 1320 is used to perform other operations except the sending and receiving operations on the terminal device in the above method embodiment.

[0155] This application also provides a network device. Figure 14 shows a schematic diagram of the structure of a network device 1400 provided in an embodiment of this application. This network device 1400 can be applied to the system shown in Figure 1 . For example, network device 1400 can be a network device in the system shown in Figure 1 , configured to perform the functions of the network device in the above-described method embodiment. It should be understood that the following is merely an example, and that network devices in future communication systems may have other forms and configurations.

[0156] For example, in a 5G communication system, the network device 1400 may include a CU, a DU, and an AAU. Compared to the network device in an LTE communication system, which is composed of one or more radio frequency units (such as a remote radio unit (RRU) and one or more building base band units (BBU)),

[0157] The non-real-time portion of the original BBU will be separated and redefined as a CU, responsible for handling non-real-time protocols and services. Some of the BBU's physical layer processing functions will be merged with the original RRU and passive antenna into the AAU. The remaining BBU functions will be redefined as the DU, responsible for handling physical layer protocols and real-time services. In short, the CU and DU are differentiated by the real-time nature of their processing, while the AAU is a combination of the RRU and antenna.

[0158] The CU, DU, and AAU can be deployed separately or together, resulting in a variety of network deployment configurations. One possible deployment configuration, as shown in Figure 14, is consistent with traditional 4G network equipment, with the CU and DU deployed on shared hardware. It should be understood that Figure 14 is merely an example and does not limit the scope of protection of this application. For example, the deployment configuration could also include the DU being deployed in the BBU room, the CU being deployed centrally, or the DU being deployed centrally, with the CU being centralized at a higher level.

[0159] The AAU 1500 can implement transceiver functions and correspond to the transceiver unit 1202 in Figure 12. Optionally, the AAU 1500 can also be referred to as a transceiver, a transceiver circuit, or a transceiver, and may include at least one antenna 1501 and a radio frequency unit 1502. Optionally, the AAU 1500 may include a receiving unit and a transmitting unit. The receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The CU and DU 1600 can implement internal processing functions and correspond to the processing unit 1201 in Figure 12. Optionally, the CU and DU 1600 can control network devices and may be referred to as controllers. The AAU, CU, and DU may be physically located together or physically separated.

[0160] In addition, the network equipment is not limited to the form shown in Figure 14, but can also be other forms: for example: including a BBU and an adaptive radio unit (ARU), or including a BBU and an AAU; it can also be customer premises equipment (CPE), or it can be other forms, which are not limited in this application.

[0161] In one example, the CU and DU1600 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network with a single access standard (such as an LTE network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, a future network or other networks). The CU and DU1600 also include a memory 1601 and a processor 1602. The memory 1601 is used to store necessary instructions and data. The processor 1602 is used to control the first network device to perform necessary actions, such as controlling the network device to execute the operation process of the network device in the above method embodiment. The memory 1601 and the processor 1602 can serve one or more single boards. That is, a memory and a processor can be separately set on each single board. Multiple single boards can also share the same memory and processor. In addition, necessary circuits can also be set on each single board.

[0162] It should be understood that the network device shown in Figure 14 is capable of implementing the network device functions involved in the method embodiment of Figure 5B. The operations and / or functions of each unit in the network device are respectively for implementing the corresponding processes performed by the network device in the method embodiment of the present application. To avoid repetition, detailed description is appropriately omitted here. The structure of the network device illustrated in Figure 14 is only one possible form and should not constitute any limitation on the embodiments of the present application. This application does not exclude the possibility of other forms of network device structures that may appear in the future.

[0163] The CU and DU 1600 can be used to perform the actions implemented within the network device described in the previous method embodiments, while the AAU 1500 can be used to perform the actions described in the previous method embodiments in which the network device sends or receives data to or from the terminal device. For details, please refer to the description in the previous method embodiments and will not be repeated here.

[0164] An embodiment of the present application also provides a communication system, which includes a terminal device and a network device, wherein the terminal device can serve as the transmitting end in FIG. 5B or as the receiving end in FIG. 5B , which will not be described in detail here.

[0165] Based on the above embodiments, embodiments of the present application further provide a readable storage medium storing instructions that, when executed, implement the method of any of the above embodiments. The readable storage medium may include a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk, among other media capable of storing program code.

[0166] It should be noted that all or part of any features in any embodiment of this application can be freely combined if there is no contradiction, and the combined technical solutions are also within the scope of this application.

[0167] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, compact disc read-only memory (CD-ROM), optical storage, etc.) containing computer-usable program code.

[0168] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0169] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0170] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

Claims

1. A perception method, characterized in that: include: determining a global perception area, where the global perception area is used to indicate a perception range; receiving mask reference information, where the mask reference information is used to determine scatterer information in a first sensing area, where the first sensing area is a partial area of ​​the global sensing area, and a density of scatterers in the first sensing area is greater than or equal to a first threshold; Scatterer information in areas of the global perception area other than the first perception area is transmitted based on the mask reference information.

2. The method according to claim 1, characterized in that The mask reference information includes: mask size information, mask range information, and a mask matrix, wherein the mask size information is used to refer to the length of each mask unit in the mask area, the mask range information is used to indicate the boundary of the mask area, and the mask matrix is ​​used to indicate the value of each mask unit in the mask area, and the mask area fully or partially overlaps with the global perception area.

3. The method according to claim 1, characterized in that The mask reference information includes: the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and the first threshold; the method further includes: A mask area is determined according to the mask reference information, where the mask area fully or partially overlaps with the global perception area.

4. The method according to claim 2 or 3, characterized in that The first sensing area is an area in an overlapping area between the mask area and the global sensing area where the density of scatterers is greater than or equal to the first threshold.

5. The method according to any one of claims 2 to 4, characterized in that: The length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region.

6. The method according to any one of claims 3 to 5, characterized in that: The method further comprises: The first threshold is updated based on the first threshold and the data transmission capability of the receiving end.

7. The method according to claim 2 or 3, characterized in that The mask range information includes: coordinate ranges of the boundaries of the mask area in the X-axis, Y-axis, and Z-axis of the world coordinate system.

8. The method according to claim 2 or 3, characterized in that The value of each mask unit is a first value or a second value, wherein the first value indicates that the density of the scatterer is greater than or equal to the first threshold, the second value indicates that the density of the scatterer is less than the first threshold, and the first value is different from the second value.

9. A perception method, characterized in that: include: Determining mask reference information, where the mask reference information is used to determine scatterer information in a first sensing area, where the first sensing area is a partial area of ​​a global sensing area, where a density of scatterers in the first sensing area is greater than or equal to a first threshold, and the global sensing area is used to indicate a sensing range; sending the mask reference information; Scatterer information in an area of ​​the global sensing area other than the first sensing area is received.

10. The method according to claim 9, characterized in that The mask reference information includes: mask size information, mask range information, and a mask matrix, wherein the mask size information is used to refer to the length of each mask unit in the mask area, the mask range information is used to indicate the boundary of the mask area, and the mask matrix is ​​used to indicate the value of each mask unit in the mask area, and the mask area fully or partially overlaps with the global perception area.

11. The method according to claim 10, characterized in that The first sensing area is an area in an overlapping area between the mask area and the global sensing area where the density of scatterers is greater than or equal to the first threshold.

12. The method according to claim 9, characterized in that The mask reference information includes: the length of each perceptual sub-region in the global perceptual region, the boundary of the global perceptual region, the value of each perceptual sub-region in the global perceptual region, and the first threshold.

13. The method according to any one of claims 10 to 12, characterized in that: The length of each perception sub-region in the global perception region is the same as the length of each mask unit in the mask region.

14. The method according to claim 10 or 11, characterized in that The mask range information includes: coordinate ranges of the boundaries of the mask area in the X-axis, Y-axis, and Z-axis of the world coordinate system.

15. The method according to claim 10 or 11, characterized in that The value of each mask unit is a first value or a second value, wherein the first value indicates that the density of the scatterer is greater than or equal to the first threshold, the second value indicates that the density of the scatterer is less than the first threshold, and the first value is different from the second value.

16. A communication device, characterized in that: include: A functional module for implementing the method according to any one of claims 1 to 15.

17. A communication device, characterized in that: include: at least one processor and memory; The memory is used to store computer programs or instructions; The at least one processor is configured to execute the computer program or instructions so that the method according to any one of claims 1 to 15 is performed.

18. A chip system, characterized in that: The chip system includes: a processing circuit; the processing circuit is coupled to a storage medium; The processing circuit is used to execute part or all of the computer programs or instructions in the storage medium, and when the part or all of the computer programs or instructions are executed, is used to implement the method according to any one of claims 1 to 15.

19. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, and when the instructions are executed by a computer, the method according to any one of claims 1 to 15 is performed.

20. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is run on a computer, the method according to any one of claims 1 to 15 is executed.

Images