Perception method and device

Abstract

The invention provides a sensing method and device, aims to reduce resource waste, and relates to the technical field of wireless communication. In the method, a receiving end receives a first sensing signal on a first frequency domain resource. And the receiving end sends first information based on the measurement result of the first sensing signal. Wherein the first information is used for determining a second frequency domain resource, and the second frequency domain resource is determined according to a measurement result of the first sensing signal. Based on the scheme, the second frequency domain resource can be determined according to the measurement result of the first sensing signal, that is, the frequency domain resource can be dynamically adjusted according to the observation result, so that the frequency domain resource can be saved to a certain extent.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a sensing method and apparatus. Background Art

[0002] In recent years, wireless sensing technologies have attracted extensive attention in the academic community. Wireless sensing technologies obtain the characteristics of the signal space or the channel by analyzing the changes of the reference signal during the propagation process to achieve scene sensing. The scenes here may include factors such as buildings and moving vehicles. Radar is one of the most classic wireless sensing means and has been widely used in fields such as agriculture and meteorology. Its basic principle is that the transmitter emits a specific waveform signal, which is received by the receiver through the channel. By processing the transmitted signal emitted by the transmitter and the received signal received by the receiver, the target of interest in the channel can be extracted.

[0003] However, after the time-frequency resources of the reference signal in the current communication system are allocated, they are fixed and do not change, resulting in a certain degree of resource waste. Summary of the Invention

[0004] This application provides a sensing method and apparatus in order to reduce resource waste.

[0005] In a first aspect, a sensing method is provided. This method can be executed by a receiving end, or a chip / chip system. Among them, the receiving end can be a network device or a terminal device. In this method, the receiving end receives a first sensing signal on a first frequency-domain resource. The receiving end sends a first piece of information based on the measurement result of the first sensing signal. Among them, the first piece of information is used to determine a second frequency-domain resource, and the second frequency-domain resource is determined according to the measurement result of the first sensing signal.

[0006] Based on this solution, since the second frequency-domain resource can be determined according to the measurement result of the first sensing signal, that is, the frequency-domain resource can be dynamically adjusted according to the measurement result, the frequency-domain resource can be saved to a certain extent.

[0007] In a possible implementation manner, the receiving end receives a second sensing signal based on the second frequency-domain resource. Based on this solution, the second frequency-domain resource is determined according to the measurement result of the first sensing signal, and the second sensing signal is transmitted and received on the second frequency-domain resource. That is to say, the frequency-domain resource for the second sensing can be determined based on the result of the first sensing, so that the frequency-domain resource used for sensing can be dynamically adjusted, and the resource can be saved to a certain extent.

[0008] In a possible implementation manner, the receiving end receives a second piece of information, and the second piece of information is used to evaluate the accuracy of the measurement result. The receiving end sends the first piece of information based on the measurement result of the first sensing signal and the second piece of information.

[0009] Based on this solution, the receiving end can evaluate the accuracy of the measurement result of the first sensing signal based on the second information, so as to determine whether it is necessary to perform sensing again. Therefore, when the accuracy of the measurement result of the first sensing signal is low, performing sensing again can improve the sensing performance. When the accuracy of the measurement result of the first sensing signal is high, there is no need to perform sensing again, which can save resources.

[0010] In a possible implementation, the first information includes range information of the location where the target is located or an estimated value of the location or distance of the target, and the estimated value is obtained based on the measurement result of the first sensing signal, or the first information includes indication information of a second frequency-domain resource.

[0011] Based on this solution, when the first information includes range information of the location where the target is located or an estimated value of the location or distance of the target, the sending end and the receiving end can determine the second frequency-domain resource according to a pre-agreed manner, which can save transmission resources. When the first information includes indication information of a second frequency-domain resource, the receiving end can determine the second frequency-domain resource and indicate it to the sending end, so that the determined second frequency-domain resource better meets the requirements of the scenario.

[0012] In a possible implementation, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are continuous in the frequency domain. Or, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are not continuous in the frequency domain. Or, the second frequency-domain resource and the first frequency-domain resource are in different frequency bands and are not continuous in the frequency domain.

[0013] Based on the above solution, if the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are continuous in the frequency domain, they can be implemented based on the same set of hardware, such as a radio frequency unit or a baseband unit, which can reduce the influence of non-ideal factors between different frequency bands, such as carrier frequency offset, time delay or phase difference between different frequency bands. If the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are not continuous in the frequency domain, then compared with the case of continuous frequency bands, non-continuity within the band can achieve a larger virtual bandwidth (the difference between the maximum frequency and the minimum frequency of the signal) based on the same signal bandwidth, which is beneficial to improving the ranging resolution. If the second frequency-domain resource and the first frequency-domain resource are in different frequency bands and are not continuous in the frequency domain, then a larger virtual bandwidth (the difference between the maximum frequency and the minimum frequency of the signal) can be achieved based on the same signal bandwidth, improving the ranging resolution.

[0014] In a possible implementation, the first frequency-domain resource includes the frequency-domain resource of the first frequency band and / or the frequency-domain resource of the second frequency band. The first frequency band and the second frequency band are different.

[0015] Based on the above solution, if the first frequency-domain resource includes the frequency-domain resources of the first frequency band or the frequency-domain resources of the second frequency band, the influence of non-ideal factors between different frequency bands, such as carrier frequency offset, time delay or phase difference between different frequency bands, etc., can be reduced. If the first frequency-domain resource includes the frequency-domain resources of the first frequency band and the frequency-domain resources of the second frequency band, a larger virtual bandwidth (the difference between the maximum frequency and the minimum frequency of the signal) can be achieved based on the same signal bandwidth, improving the ranging resolution.

[0016] In a possible implementation, before receiving the first sensing signal on the first frequency-domain resource, the receiving end receives request information, and the request information is used to request sensing capability information, where the sensing capability information includes the supported frequency bands and the supported bandwidths. The receiving end sends the sensing capability information.

[0017] In a possible implementation, the receiving end sends request information to the sending end, and the request information is used to request the sensing capability information of the sending end, where the sensing capability information includes the frequency bands and the supported bandwidths supported by the sending end. The receiving end receives the sensing capability information.

[0018] Based on this solution, through the interaction of the sensing capability information between the sending end and the receiving end, the supported frequency bands and the supported bandwidths of both sides can be determined, so that the determined frequency-domain resources can meet the sensing capability information of both sides.

[0019] In a possible implementation, the second frequency-domain resource is determined according to the column correlation of the first sensing signal and the second sensing signal, or the second frequency-domain resource is determined according to the Fisher information matrix (FIM) of the measurement result of the first sensing signal.

[0020] Based on this solution, the second frequency-domain resource can be determined through the column correlation and the Fisher information matrix, and the second frequency-domain resource determined through the column correlation and the Fisher information matrix is more applicable.

[0021] In a possible implementation, the second sensing signal is carried on M second frequency-domain resources, and the M second frequency-domain resources satisfy one or more of the following: minimizing the column correlation matrix of the measurement results of the first sensing signal and the second sensing signal. Or, minimizing the condition number of the Fisher information matrix. Or, minimizing the sum of the reciprocals of the eigenvalues of the Fisher information matrix. Or, maximizing the determinant of the Fisher information matrix. Or, maximizing the minimum eigenvalue of the Fisher information matrix. Or, minimizing the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix. M is an integer greater than 0. Among them, the value of M can be determined by the receiving end or the control end or pre-configured or can also be predefined by the protocol.

[0022] Based on this solution, by optimizing the algorithm to make the second frequency domain resource meet one or more of the above, the determined second frequency domain resource can be made more applicable.

[0023] In a possible implementation, the second information includes one or more of the following: the condition number threshold of the Fisher information matrix, the determinant threshold of the Fisher information matrix, the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix, the minimum eigenvalue threshold of the Fisher information matrix, or the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0024] Based on the above solution, the accuracy of the measurement result can be evaluated through the parameter threshold of the Fisher information matrix, and the measurement result can be evaluated more accurately.

[0025] In a possible implementation, based on the measurement result of the first sensing signal, the Fisher information matrix of the measurement result is determined. When the condition number of the Fisher information matrix is greater than or equal to the condition number threshold of the Fisher information matrix, the first information is sent. Or, when the determinant of the Fisher information matrix is less than or equal to the determinant threshold of the Fisher information matrix, the first information is sent. Or, when the sum of the reciprocals of the eigenvalues of the Fisher information matrix is greater than or equal to the sum of the reciprocals of the eigenvalues of the Fisher information matrix, the first information is sent. Or, when the minimum eigenvalue of the Fisher information matrix is less than or equal to the minimum eigenvalue threshold of the Fisher information matrix, the first information is sent. Or, when the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix is greater than or equal to the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix, the first information is sent.

[0026] Based on the above solution, the receiving end can evaluate the accuracy of the measurement result of the first sensing signal based on the parameters of the Fisher information matrix, so as to determine whether it is necessary to perform sensing again. Therefore, when the accuracy of the measurement result of the first sensing signal is low, performing sensing again can improve the sensing performance. When the accuracy of the measurement result of the first sensing signal is high, there is no need to perform sensing again, which can save resources.

[0027] In a second aspect, a sensing method is provided. This method can be executed by a transmitting end, or a chip / chip system. Among them, the transmitting end can be a network device or a terminal device. In this method, the transmitting end sends a first sensing signal on a first frequency domain resource. The transmitting end receives first information, and the first information is used to determine a second frequency domain resource, and the second frequency domain resource is determined according to the measurement result of the first sensing signal.

[0028] In a possible implementation, the transmitting end sends a second sensing signal based on the second frequency domain resource.

[0029] In a possible implementation, the transmitting end sends second information, and the second information is used to evaluate the accuracy of the measurement result. The first information is sent based on the measurement result of the first sensing signal and the second information.

[0030] In a possible implementation, the first information includes range information of the location where the target is located or an estimated value of the location or distance of the target, and the estimated value is obtained based on the measurement result of the first sensing signal, or the first information includes indication information of a second frequency-domain resource.

[0031] In a possible implementation, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are continuous in the frequency domain. Alternatively, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are not continuous in the frequency domain. Alternatively, the second frequency-domain resource and the first frequency-domain resource are in different frequency bands and are not continuous in the frequency domain.

[0032] In a possible implementation, the first frequency-domain resource includes frequency-domain resources of a first frequency band and / or frequency-domain resources of a second frequency band. The first frequency band and the second frequency band are different.

[0033] In a possible implementation, the transmitting end sends request information, and the request information is used to request sensing capability information, and the sensing capability information includes supported frequency bands and supported bandwidths. The transmitting end receives the sensing capability information.

[0034] In a possible implementation, the second frequency-domain resource is determined according to the column correlation of the measurement result of the first sensing signal, or the second frequency-domain resource is determined according to the Fisher information matrix of the measurement result of the first sensing signal.

[0035] In a possible implementation, the second sensing signal is carried on M second frequency-domain resources, and the M second frequency-domain resources satisfy one or more of the following: minimizing the column correlation matrix of the measurement results of the first sensing signal and the second sensing signal. Or, minimizing the condition number of the Fisher information matrix. Or, minimizing the sum of the reciprocals of the eigenvalues of the Fisher information matrix. Or, maximizing the determinant of the Fisher information matrix. Or, maximizing the minimum eigenvalue of the Fisher information matrix. Or, minimizing the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix. M is an integer greater than 0. Among them, the value of M can be determined by the receiving end or the control end or pre-configured or can also be predefined by the protocol.

[0036] In a possible implementation, the second information includes one or more of the following: the condition number threshold of the Fisher information matrix, the determinant threshold of the Fisher information matrix, the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix, the minimum eigenvalue threshold of the Fisher information matrix, or the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0037] In a possible implementation, the condition number of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the condition number threshold of the Fisher information matrix. Alternatively, the determinant of the Fisher information matrix of the measurement result of the first sensing signal is less than or equal to the determinant threshold of the Fisher information matrix. Alternatively, the sum of the reciprocals of the eigenvalues of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix. Alternatively, the minimum eigenvalue of the Fisher information matrix of the measurement result of the first sensing signal is less than or equal to the minimum eigenvalue threshold of the Fisher information matrix. Alternatively, the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0038] In a third aspect, a communication device is provided, including: a processing unit and a transceiver unit.

[0039] The transceiver unit is configured to receive a first sensing signal on a first frequency domain resource. The processing unit is configured to generate first information based on the measurement result of the first sensing signal. Wherein, the first information is used to determine a second frequency domain resource, and the second frequency domain resource is determined according to the measurement result of the first sensing signal. The transceiver unit is further configured to send the first information.

[0040] In a possible implementation, the transceiver unit is further configured to receive a second sensing signal based on the second frequency domain resource.

[0041] In a possible implementation, the transceiver unit is further configured to receive second information for evaluating the accuracy of the measurement result. The transceiver unit is further configured to send the first information based on the measurement result of the first sensing signal and the second information.

[0042] In a possible implementation, the first information includes range information of the location where the target is located or an estimated value of the location or distance of the target, and the estimated value is obtained based on the measurement result of the first sensing signal, or the first information includes indication information of the second frequency domain resource.

[0043] In a possible implementation, the second frequency domain resource and the first frequency domain resource are in the same frequency band and are continuous in the frequency domain. Alternatively, the second frequency domain resource and the first frequency domain resource are in the same frequency band and are not continuous in the frequency domain. Alternatively, the second frequency domain resource and the first frequency domain resource are in different frequency bands and are not continuous in the frequency domain.

[0044] In a possible implementation, the first frequency domain resource includes frequency domain resources of a first frequency band and / or frequency domain resources of a second frequency band. The first frequency band and the second frequency band are different.

[0045] In a possible implementation, the transceiver unit is further configured to receive request information before receiving the first sensing signal on the first frequency-domain resource, where the request information is used to request sensing capability information, and the sensing capability information includes supported frequency bands and supported bandwidths. The transceiver unit is further configured to send the sensing capability information.

[0046] In a possible implementation, the second frequency-domain resource is determined based on the column correlation of the first sensing signal and the second sensing signal, or the second frequency-domain resource is determined based on the Fisher information matrix of the measurement result of the first sensing signal.

[0047] In a possible implementation, the second sensing signal is carried on M second frequency-domain resources, and the M second frequency-domain resources satisfy one or more of the following: minimizing the column correlation matrix of the measurement results of the first sensing signal and the second sensing signal. Or, minimizing the condition number of the Fisher information matrix. Or, minimizing the sum of the reciprocals of the eigenvalues of the Fisher information matrix. Or, maximizing the determinant of the Fisher information matrix. Or, maximizing the minimum eigenvalue of the Fisher information matrix. Or, minimizing the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix. M is an integer greater than 0. Wherein, the value of M can be determined by the receiving end or the control end or pre-configured or can also be predefined by the protocol.

[0048] In a possible implementation, the second information includes one or more of the following: the condition number threshold of the Fisher information matrix, the determinant threshold of the Fisher information matrix, the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix, the minimum eigenvalue threshold of the Fisher information matrix, or the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0049] In a possible implementation, the processing unit is further configured to determine the Fisher information matrix of the measurement result based on the measurement result of the first sensing signal. The transceiver unit is further configured to send the first information when the condition number of the Fisher information matrix is greater than or equal to the condition number threshold of the Fisher information matrix. Or, the transceiver unit is further configured to send the first information when the determinant of the Fisher information matrix is less than or equal to the determinant threshold of the Fisher information matrix. Or, the transceiver unit is further configured to send the first information when the sum of the reciprocals of the eigenvalues of the Fisher information matrix is greater than or equal to the sum of the reciprocals of the eigenvalues of the Fisher information matrix. Or, the transceiver unit is further configured to send the first information when the minimum eigenvalue of the Fisher information matrix is less than or equal to the minimum eigenvalue threshold of the Fisher information matrix. Or, the transceiver unit is further configured to send the first information when the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix is greater than or equal to the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0050] In a fourth aspect, a communication device is provided, including: a processing unit and a transceiver unit.

[0051] A transceiver unit is configured to transmit a first sensing signal on a first frequency-domain resource. The transceiver unit is further configured to receive first information for determining a second frequency-domain resource, where the second frequency-domain resource is determined according to a measurement result of the first sensing signal. A processing unit is configured to determine the second frequency-domain resource based on the first information.

[0052] In a possible implementation, the transceiver unit is further configured to transmit a second sensing signal based on the second frequency-domain resource.

[0053] In a possible implementation, the transceiver unit is further configured to transmit second information for evaluating the accuracy of the measurement result. The first information is transmitted based on the measurement result of the first sensing signal and the second information.

[0054] In a possible implementation, the first information includes range information of the location where the target is located or an estimated value of the location or distance of the target, where the estimated value is obtained based on the measurement result of the first sensing signal, or the first information includes indication information of the second frequency-domain resource.

[0055] In a possible implementation, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are continuous in the frequency domain. Alternatively, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are discontinuous in the frequency domain. Alternatively, the second frequency-domain resource and the first frequency-domain resource are in different frequency bands and are discontinuous in the frequency domain.

[0056] In a possible implementation, the first frequency-domain resource includes frequency-domain resources of a first frequency band and / or frequency-domain resources of a second frequency band. The first frequency band and the second frequency band are different.

[0057] In a possible implementation, the transceiver unit is further configured to transmit request information for requesting sensing capability information, where the sensing capability information includes supported frequency bands and supported bandwidths. The transceiver unit is further configured to receive the sensing capability information.

[0058] In a possible implementation, the second frequency-domain resource is determined according to the column correlation of the measurement result of the first sensing signal, or the second frequency-domain resource is determined according to the Fisher information matrix of the measurement result of the first sensing signal.

[0059] In a possible implementation, the second sensing signal is carried on M second frequency-domain resources, and the M second frequency-domain resources satisfy one or more of the following: minimizing the column correlation matrix of the measurement results of the first sensing signal and the measurement results of the second sensing signal. Or, minimizing the condition number of the Fisher information matrix. Or, minimizing the sum of the reciprocals of the eigenvalues of the Fisher information matrix. Or, maximizing the determinant of the Fisher information matrix. Or, maximizing the minimum eigenvalue of the Fisher information matrix. Or, minimizing the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix. M is an integer greater than 0. Wherein, the value of M can be determined by the receiving end or the control end or pre-configured or can also be predefined by the protocol.

[0060] In a fifth aspect, the present application provides a communication device, including a processor, the processor is coupled to a memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions to perform the implementation methods of the above first aspect and second aspect. The memory can be located inside the device or outside the device. The number of the processors is one or more.

[0061] In a sixth aspect, the present application provides a communication device, including: a processor and an interface circuit, the interface circuit is used to communicate with other devices, and the processor is used for the implementation methods of the above first aspect and second aspect.

[0062] In a seventh aspect, a communication device is provided. The device includes a logic circuit and an input-output interface.

[0063] In an eighth aspect, the present application provides a communication system, including: a transmitting end and a receiving end for performing the implementation methods of the above first aspect and second aspect.

[0064] In a ninth aspect, the present application further provides a chip system, including: a processor for performing the implementation methods of the above first aspect and second aspect.

[0065] In a tenth aspect, the present application further provides a computing program product, including computer-executable instructions, when the computer-executable instructions run on a computer, the implementation methods of the above first aspect and second aspect are executed.

[0066] In an eleventh aspect, the present application further provides a computer-readable storage medium, in which computer programs or instructions are stored, and when the instructions run on a computer, the implementation methods of the above first aspect and second aspect are realized.

[0067] The technical effects achieved by the above second aspect to eleventh aspect can refer to the technical effects in the first aspect and second aspect, and will not be repeated here. Description of the Drawings

[0068] Figure 1 Schematic diagram of a communication system provided by an embodiment of the present application;

[0069] Figure 2A Schematic diagram of a sensing scenario provided by an embodiment of the present application;

[0070] Figure 2B Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0071] Figure 2C Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0072] Figure 2D Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0073] Figure 2E Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0074] Figure 2F Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0075] Figure 2G Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0076] Figure 2H Schematic diagram of another sensing scenario provided by an embodiment of the present application;

[0077] Figure 3 Schematic diagram of the time-domain distribution of a PRS;

[0078] Figure 4A Schematic diagram of the RB distribution of a PRS;

[0079] Figure 4B Schematic diagram of the RE distribution of a PRS;

[0080] Figure 5 Exemplary flowchart of a sensing method provided by an embodiment of the present application;

[0081] Figure 6A Schematic diagram of a first sensing resource provided by an embodiment of the present application;

[0082] Figure 6B Schematic diagram of another first sensing resource provided by an embodiment of the present application;

[0083] Figure 7A Schematic diagram of a first sensing resource and a second sensing resource provided by an embodiment of the present application;

[0084] Figure 7BAnother schematic diagram of the first sensing resource and the second sensing resource provided by the embodiment of the present application;

[0085] Figure 7C Another schematic diagram of the first sensing resource and the second sensing resource provided by the embodiment of the present application;

[0086] Figure 7D Another schematic diagram of the first sensing resource and the second sensing resource provided by the embodiment of the present application;

[0087] Figure 8 A schematic diagram of a communication device provided by the embodiment of the present application;

[0088] Figure 9 Another schematic diagram of a communication device provided by the embodiment of the present application;

[0089] Figure 10 Another schematic diagram of a communication device provided by the embodiment of the present application;

[0090] Figure 11 Another schematic diagram of a communication device provided by the embodiment of the present application. Detailed implementation manners

[0091] The technical solutions of the embodiments of the present application can be applied to New Radio (NR) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, next-generation wireless communication systems such as 6G, etc., which are not limited herein.

[0092] Figure 1 It is a schematic architecture diagram of a communication system 1000 to which the embodiments of the present application are applied. As Figure 1 shown, the communication system includes a radio access network 100. Among them, the radio access network 100 may include at least one network device (such as Figure 1 110a and / or 110b in Figure 1 ), and may also include at least one terminal device (such as at least one of 120a - 120j in Figure 1This is only a schematic diagram. Other network devices may also be included in the communication system, such as wireless relay devices and wireless backhaul devices, which are not drawn in Figure 1 .

[0093] A network device is a network-side device with wireless transceiver functions. The network device may be a device in a radio access network (RAN) that provides wireless communication functions for terminal devices, called a RAN device. For example, the network device may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it may also be a module or unit that completes some functions of the base station. For example, it may be a central unit (CU) or a distributed unit (DU). Here, the CU completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and may also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and may also complete some or all of the functions of the physical layer. For specific descriptions of the above protocol layers, reference may be made to the relevant technical specifications of the 3rd generation partnership project (3GPP). The network device may be a macro base station (such as Figure 1 110a in Figure 1 ), a micro base station or an indoor station (such as

[0094] In another possible scenario, multiple RAN nodes cooperate to assist a terminal in achieving wireless access, and different RAN nodes respectively implement partial functions of a base station. For example, the RAN node can be a CU, a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately set, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0095] In different systems, the CU (or CU-CP and CU-UP), the DU, or the RU may also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (ORAN) system, the CU can also be called an O-CU (open CU), the DU can also be called an O-DU, the CU-CP can also be called an O-CU-CP, the CU-UP can also be called an O-CU-UP, and the RU can also be called an O-RU. For the convenience of description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description. Any one 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.

[0096] A terminal device is a user-side device with wireless transceiver capabilities. A terminal device can also be referred to as a user equipment (UE), mobile station, mobile terminal, etc. Terminal devices can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote healthcare, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. Embodiments of this application do not limit the specific technologies and specific device forms adopted by the terminal device.

[0097] Network devices and terminal devices can be fixed in position or movable. Network devices and terminal devices can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airplanes, balloons, and artificial satellites in the air. Embodiments of this application do not limit the application scenarios of network devices and terminal devices.

[0098] The roles of network devices and terminal devices can be relative. For example, Figure 1 the helicopter or drone 120i in [diagram] can be configured as a mobile network device. For those terminal devices 120j that access the radio access network 100 through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, the communication between 110a and 120i is through the radio air interface protocol. Of course, the communication between 110a and 120i can also be through the interface protocol between network devices. In this case, relative to 110a, 120i is also a network device. Therefore, network devices and terminal devices can both be uniformly referred to as communication devices. Figure 1 The 110a and 110b in [diagram] can be referred to as communication devices with network device functions. Figure 1 The 120a - 120j in [diagram] can be referred to as communication devices with terminal device functions.

[0099] In the embodiments of the present application, the functions of the network device can also be performed by a module (such as a chip) in the network device, or by a control subsystem including the functions of the network device. The control subsystem including the functions of the network device here can be a control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal device can also be performed by a module (such as a chip or a modem) in the terminal device, or by a device including the functions of the terminal device.

[0100] In recent years, wireless sensing technology has attracted extensive attention in the academic community. Wireless sensing technology analyzes the changes in wireless signals during propagation to obtain the characteristics of the signal space or the channel, so as to achieve scene sensing. The scenes here can include factors such as buildings and moving vehicles. Radar is one of the most classic wireless sensing means and has been widely used in fields such as agriculture and meteorology. Its basic principle is that the transmitter emits a specific waveform signal, which is received by the receiver through the channel. By processing the transmitted signal emitted by the transmitter and the received signal received by the receiver, the target of interest in the channel can be extracted.

[0101] In a possible implementation, the sensing system may include a transmitting end, a control end, and a receiving end. Among them, the transmitting end can transmit signals, and the receiving end can receive signals. The signals transmitted by the transmitting end are received by the receiving end after being affected by a vehicle (which can also be other targets such as a bicycle or a drone). After receiving the signals, the receiving end performs signal processing to obtain the sensing result. The sensing result may include information such as distance, speed, angle, or signal strength. The control end can perform resource scheduling. For example, it can determine the time-frequency resources for transmitting signals and send the information of the time-frequency resources to the transmitting end and the receiving end. In this way, the transmitting end can transmit signals on the time-frequency resources determined by the control end, and the receiving end can receive signals on the time-frequency resources determined by the control end.

[0102] Referring to Figure 2A , a network device (such as a base station) can be used as the transmitting end and the control end, and a terminal device (such as a UE) can be used as the receiving end. Referring to Figure 2B , the UE can be used as the transmitting end, and the base station can be used as the receiving end and the control end. Referring to Figure 2C , base station 1 can be used as the transmitting end and the control end, and base station 2 can be used as the receiving end. Referring to Figure 2D , UE1 can be used as the transmitting end and the control end, and UE2 can be used as the receiving end. Referring to Figure 2E , base station 1 can be used as the transmitting end, base station 2 can be used as the receiving end, and base station 3 can be used as the control end. Referring to Figure 2F , the base station can be used as the transmitting end, the receiving end, and the control end. Referring to Figure 2G , the UE can be used as the transmitting end, the receiving end, and the control end. Referring to Figure 2H , UE1 can be used as the transmitting end, UE2 can be used as the control end, and the base station can be used as the control end.

[0103] The main function of a wireless communication system is to exchange information between transceivers. Its basic principle is also that the transmitting end emits a specific waveform signal, which is received by the receiver after passing through the channel, and the signal transmitted by the transmitting end is demodulated after signal processing. From the entire physical process of transmission, propagation, and reception, the processes of radar and wireless communication are extremely similar. How to integrate wireless communication and sensing technologies to sense the surrounding environment while achieving communication has become a hot topic in current research.

[0104] Progressive sensing is a method for achieving gradual optimization of resources while maintaining high performance. Its basic idea is to first perform sensing based on fewer partial resources to obtain a relatively rough sensing result; based on the rough sensing result, gradually optimize the performance by gradually increasing the use of resources, rather than allocating a large amount of resources for sensing at one time. This method can improve the efficiency of using sensing resources and also ensure good sensing performance.

[0105] The idea of progressive sensing has been applied to actual sensing systems. For example, in the spatial domain, by first performing coarse beam scanning, the target direction can be quickly determined, thereby reducing the search range and improving the positioning efficiency. And by performing fine beam scanning, the energy of the signal can be more concentrated in the target direction, reducing the signal propagation loss and interference, thereby improving the transmission quality and reliability. Another example is that in the time domain, by first performing rough speed measurement estimation, the approximate speed range of the target can be quickly determined, thereby reducing the target speed search range and improving the calculation efficiency, and then based on fine speed measurement estimation to improve the reliability of the speed measurement result.

[0106] However, there is currently no technical solution for progressive sensing in the frequency domain. In other words, after the frequency domain resources are allocated in the current sensing process, they are fixed and do not change, resulting in a certain degree of waste of frequency domain resources.

[0107] Positioning, as an important function of the NR system, the realization of this function depends on the positioning reference signal (PRS). Its resource allocation is mainly considered from two dimensions: time domain and frequency domain. Among them, the time domain dimension can be further divided into the slot level and the symbol level, and the frequency domain dimension can be further divided into the resource block (RB) level and the resource element (RE) level. The configuration of the positioning signal in NR can be summarized as:

[0108] 1. Time domain resource allocation.

[0109] (1) Slot level. Such as Figure 3As shown in the figure, PRS is mainly determined by four parameters, namely: 1) PRSResourceSetPeriod, the period of PRS at the time slot level; 2) PRSResourceOffset, the offset of the starting position of PRS; 3) PRSResourceRepetition, how many times PRS repeats within one period; 4) PRSResourceTimeGap, the interval between two PRSs within one period.

[0110] Through the above four parameters, the resource distribution in the time slot can be determined.

[0111] (2) Symbol level. A time slot contains 14 symbols. Specifically for a certain time slot, it is necessary to determine which of these symbols are used to carry PRS. As Figure 4A shown, the configuration at the symbol level can be determined by specifying the starting position (SymbolStart) of PRS and the number of symbols occupied (NumPRSSymbols).

[0112] 2. Frequency domain resource allocation

[0113] (1) RB level. The number of RBs (NumRB) can be used to specify how many RBs the PRS signal occupies in total. Usually, one RB contains 12 REs. The starting position also needs to be determined by the offset (RBOffset) of the starting position of the RB.

[0114] (2) RE level. As shown in Figure 4B, after determining the number of RBs, it is also necessary to determine which specific REs within one RB are used to carry PRS. Specifically, the CombSize can be used to determine how many REs within one RB are used to carry PRS. The offset (REOffset) of the starting position of the RE is also needed to determine the offset of the first RE carrying PRS relative to the reference RE on different symbols.

[0115] As Figure 3 , Figure 4A and Figure 4B shown, in the current NR system, PRS is uniform in both the time and frequency domains, and a staggered scheme is adopted for the REs on different symbols. However, after the time-frequency resource allocation is completed, it is fixed and does not change, resulting in a certain degree of resource waste.

[0116] In view of this, an embodiment of the present application provides a sensing method. In this method, a receiving end can receive a first sensing signal on a first frequency-domain resource, and based on the measurement result of the first sensing signal, send a first piece of information to a transmitting end. Among them, the first piece of information can be used to determine a second frequency-domain resource, and the second frequency-domain resource is determined according to the measurement result of the first sensing signal. Based on this solution, since the second frequency-domain resource can be determined according to the measurement result of the first sensing signal, that is, the frequency-domain resource can be dynamically adjusted according to the observation result, resources can be saved to a certain extent.

[0117] Refer to Figure 5 , which is an exemplary flowchart of a sensing method provided by an embodiment of the present application, and may include the following operations. Figure 5 In the embodiment shown, the transmitting end can be a network device or a terminal device, and the receiving end can be a network device or a terminal device. Similarly, the control end can be a network device or a terminal device, and reference can be made to Figures 2A to 2G as shown. Figure 5 The embodiment shown can be applied to ranging, positioning, or speed measurement of a target, etc.

[0118] S501: The transmitting end sends a first sensing signal on the first frequency-domain resource.

[0119] Correspondingly, the receiving end receives the first sensing signal on the first frequency-domain resource.

[0120] Among them, the first frequency-domain resource can be indicated by the control end, or can also be pre-configured or pre-defined by the protocol, and the present application does not make specific limitations. The first sensing signal in S501 can be a PRS, an uplink reference signal (sounding reference signal, SRS), or a sensing reference signal, etc.

[0121] In one example, the first frequency-domain resource can belong to a single band, or it can be said that the first frequency-domain resource can include the frequency-domain resources within a band, such as Figure 6A shown. In another example, the first frequency-domain resource can belong to multiple or at least two different bands, or it can be said that the first frequency-domain resource can include the frequency-domain resources of multiple or at least two different bands, such as Figure 6B shown. Figure 6B In, the band where the first frequency-domain resource is located can be within the same frequency range (FR).

[0122] It should be noted that a frequency range may include multiple frequency bands. For example, 401 MHz to 7125 MHz may belong to FR1, and 24250 MHz to 52600 MHz may belong to FR2. It can be understood that FR1 and FR2 are only shown as examples and do not constitute a limitation on the frequency range. The first frequency domain resource involved in the embodiments of the present application may be located within one frequency range or may also be located within two or more frequency ranges.

[0123] In a possible case, whether the first frequency domain resource belongs to a single frequency band or multiple frequency bands may be determined based on the sensing capability information of the transmitting end and / or the receiving end. Among them, the sensing capability information may include the supported frequency bands and the supported bandwidths. For example, the control end may obtain the sensing capability information of the transmitting end. For instance, the control end may send a request message to the transmitting end, and this request message may be used to request the sensing capability information. The transmitting end may send the sensing capability information to the control end. Optionally, if the control end and the transmitting end are the same device, the above process may be omitted, and the control end may directly obtain the sensing capability information of the transmitting end, which will not be repeated hereinafter. Similarly, the control end may also obtain the sensing capability information of the receiving end, which may be implemented by referring to the foregoing manner of obtaining the sensing capability information of the transmitting end, and the repeated parts will not be elaborated.

[0124] S502: The receiving end sends the first information.

[0125] Correspondingly, the control end receives the first information.

[0126] Among them, the first information may be used to determine the second frequency domain resource, and this second frequency domain resource may be used to carry the second sensing signal. In a possible case, the first information may include the indication information of the second frequency domain resource, that is, the receiving end may determine the second frequency domain resource and send the indication information of the second frequency domain resource. By having the receiving end receive the sensing signal and determine the second frequency domain resource, the sensing result can be maximally obtained and the second frequency domain resource can be determined.

[0127] In another possible case, the first information may include the range information of the target's location or the estimated value of the target's location or distance. It can be understood that the range information of the target's location and the estimated value of the target's location or distance may be determined based on the measurement result of the first sensing signal. That is, the receiving end may send the range information of the target's location or the estimated value of the target's location or distance, and the control end determines the second frequency domain resource. Determining the second frequency domain resource by the control end does not require feedback of the information of the second frequency domain resource. By feedback of a small amount of the range of the target's location or the estimated value of the target's location or distance, when the number of targets is small, compared with feedback of the information of the second frequency domain resource, the resource overhead is less.

[0128] In a possible implementation, the second frequency-domain resource may be determined based on the measurement result or the observation result of the first sensing signal. The following introduces two cases.

[0129] Case 1: Determine the second frequency-domain resource according to the column correlation between the first sensing signal and the second sensing signal.

[0130] In Case 1, the receiver or the control end can determine the column correlation between the first sensing signal and the second sensing signal. To facilitate the understanding of the column correlation, the basic principle of compressive sensing is introduced first below.

[0131] Assume that there are Q candidate frequency points in the frequency domain that can be used for sensing, and M frequency points are selected from the total Q frequency points for sensing. Then the observation equation can be written in the form of the following formula (1):

[0132] y = ΦFx = Ψx Formula (1)

[0133] where is a complex vector with a dimension of M*1, and each value represents the response at a certain frequency point. represents the amplitude of the signal at different delays. Specifically, x can be expressed as shown in the following formula (2):

[0134]

[0135] x n represents the amplitude corresponding to the time delay τ n of.

[0136] represents the Fourier transform matrix. The rows in the matrix represent the changes in the frequency dimension, and the columns represent the changes in the time delay dimension. Specifically, the matrix F can be expressed as shown in the following formula (3):

[0137]

[0138] Δf represents the interval between two adjacent frequency points.

[0139] represents the frequency selection matrix, that is, M frequency points are selected from Q frequency points. Specifically, the matrix Φ can be written as shown in the following formula (4):

[0140]

[0141] Each row of the matrix has only one element as 1, and the other elements are all 0. And at most one element in each column is 1. If a certain element in the q-th column is 1, it means that the q-th frequency point is selected for sensing. The M frequency points selected from Q frequency points are numbered, that is, the frequency points used for sensing can be expressed as {f 1 , f2 , …, f M}。

[0142] denotes the observation matrix, which can be specifically expressed as shown in the following formula (5):

[0143]

[0144] In practical applications, most of the elements in the vector x are 0, and only a few elements are non-zero. Assume that there are only K non-zero elements among them. Therefore, even if the number of measurement samples M is much less than the number of unknowns N, the values of the K non-zero elements can still be accurately recovered.

[0145] The above shows the mathematical model of sparse observation. The purpose of sparse signal design is to achieve the best observation performance by selecting a small number of frequency resources. To quantitatively evaluate the quality of the observation matrix, the column correlation of the matrix is introduced. For a certain matrix its column correlation can be defined as shown in formula (6):

[0146] μ(Ψ) = max i≠j | <ψ′ i , ψ′ j >| Formula (6)

[0147] where ψ′ i is the normalized result of ψ, that is The column correlation describes the correlation between two different time-delay measurement bases, such as the correlation between the first sensing signal and the second sensing signal. Assume that ψ′ i is the observation result of the first sensing signal, and ψ′ j is the observation result of the second sensing signal.

[0148] Ideally, each column of the observation matrix is orthogonal, that is, the column correlation is 0. However, in practice, when the dimension M of the matrix is less than N, then the rank of the matrix rank(Ψ) ≤ N, which means that the columns of the matrix Ψ cannot be completely orthogonal.

[0149] Since the observation matrix can be written in the form shown in formula (5), [τ 1 , τ 2 , …, τ Nis a grid that has been pre-divided according to the measurement results of the first sensing signal, or an estimated value obtained based on the measurement results of the first sensing signal. It can be understood that in the absence of transmitting and receiving the first sensing signal, the time delay of the target may be distributed anywhere, but after transmitting and receiving the first sensing signal, the approximate range of the target can be determined, that is, the area where there is a target can be determined. Therefore, the area where there is a target can be divided into grids, and the density of grid division can be finer than the grid when transmitting and receiving the first sensing signal. Given a set of frequencies [f 1 , f 2 , …, f M , the matrix Ψ can be determined, and μ(Ψ) can be calculated. Therefore, the receiving end can use optimization algorithms such as the exhaustive method, the example group algorithm, or the simulated annealing algorithm to find a set of frequencies [f 1 , f 2 , …, f M corresponding to the minimum μ(Ψ). Then, the frequency domain resources corresponding to [f 1 , f 2 , …, f M can be regarded as the second frequency domain resources.

[0150] It should be noted that the value of the subscript M in the above [f 1 , f 2 , …, f M is given. That is to say, the number of the second frequency domain resources determined by the receiving end or the control end is given. It can be pre-defined by the protocol, or determined by the receiving end, or determined by the control end, or can be pre-configured. This application does not make specific limitations and will not be repeated below. In other words, when the receiving end or the control end determines M second frequency domain resources, it can adopt the scheme described in Case 1 or the scheme described in the following Case 2.

[0151] Case 2: Determine the second frequency domain resources according to the Fisher information matrix of the measurement results of the first sensing signal.

[0152] In Case 2, the receiving end or the control end determines the Fisher information matrix of the measurement results of the first sensing signal. The receiving end or the control end can determine the second frequency domain resources based on the parameters of the Fisher information matrix. Hereinafter, the method for determining the Fisher information matrix will be introduced.

[0153] Exemplarily, the method for determining the Fisher information matrix based on the orthogonal frequency division multiplexing (OFDM) signal will be introduced. It is assumed that the first sensing signal is an OFDM signal.

[0154] The OFDM signal can be expressed as shown in the following formula (7):

[0155]

[0156] Among them, n represents the subcarrier index, N represents the total number of subcarriers, and c n represents the data modulated on the nth subcarrier, and f n represents the frequency of the nth subcarrier, e represents complex additive white Gaussian noise, and α m represents the amplitude of the mth multipath, and τ m represents the time delay of the mth multipath.

[0157] For the above OFDM signal, the element in the i-th row and j-th column of its FIM matrix can be expressed as shown in the following formula (8):

[0158]

[0159] For the convenience of derivation, it is assumed that the modulation on each subcarrier is binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK), that is, |c n | 2 = 1. And, it is assumed that the amplitudes of all multipaths are the same and are known to be A.

[0160] Therefore, the unknown parameters are composed of delays as formula (9):

[0161] θ = [τ 1 , τ 2 , …, τ M T Formula (9)

[0162] Then, the first derivative of the mean μ y (θ) with respect to the unknown parameter is given by formula (10):

[0163]

[0164] The elements in the Fisher information matrix can be expressed as shown in formula (11):

[0165]

[0166] For the parameter θ, it satisfies the relationship shown in formula (12):

[0167]

[0168] F -1 ​The main diagonal elements of (θ) are usually also referred to as the Cramér-Rao lower bound (CRLB) of parameter estimation. Through the measurement results of the first sensing signal, a relatively rough position of the target or an estimated value of the target's position can be obtained. Suppose a total of N targets are determined, and the time delay of each target is [τ 1 , τ 2 , …, τ N . Then, according to [τ 1 , τ 2 , …, τ N , the noise power, and a set of frequencies [f 1 , f 2 , …, f M , the Fisher information matrix can be calculated. Among them, a set of frequencies [f 1 , f 2 , …, f M that satisfy the parameters of the corresponding Fisher information matrix can be found through optimization algorithms such as exhaustive search, example group algorithm, simulated annealing algorithm, etc. Then, the frequency domain resources corresponding to [f 1 , f 2 , …, f M can be regarded as the second frequency domain resources.

[0169] It can be understood that the parameters of the Fisher information matrix may include one or more of the following:

[0170] 1) Condition number, which refers to the ratio of the largest eigenvalue to the smallest eigenvalue of the Fisher information matrix.

[0171] 2) Determinant, which refers to the product of all eigenvalues of the Fisher information matrix.

[0172] 3) Sum of reciprocals of eigenvalues, which refers to the sum of the reciprocals of the eigenvalues of the Fisher information matrix.

[0173] 4) Smallest eigenvalue, which refers to the smallest eigenvalue among the eigenvalues of the Fisher information matrix.

[0174] 5) Maximum value of the main diagonal elements of the inverse matrix, which refers to the maximum value among the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0175] It can be understood that the above parameter names of the Fisher information matrix are only shown as examples and are not intended to limit the parameter names. Those skilled in the art can use other names to name the parameters of the Fisher information matrix.

[0176] The receiving end or the control end needs to find a set of frequencies [f 1 , f 2 , …, f MParameters that satisfy the above Fisher information matrix, such as making the condition number of the Fisher information matrix of the measurement result of the first sensing signal the smallest, or making the determinant of the Fisher information matrix of the measurement result of the first sensing signal the largest, or making the sum of the reciprocals of the eigenvalues of the Fisher information matrix of the measurement result of the first sensing signal the smallest, or making the smallest eigenvalue of the Fisher information matrix of the measurement result of the first sensing signal the largest, or making the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix of the measurement result of the first sensing signal the smallest.

[0177] In the embodiments of the present application, the second frequency domain resource and the first frequency domain resource may be continuous or discontinuous. For example, when the first frequency domain resource includes the frequency domain resources of the first frequency band, the second frequency domain resource may also include the frequency domain resources of the first frequency band and may be continuous with the first frequency domain resource within the first frequency band, as Figure 7A shown. The first frequency domain resource and the second frequency domain resource that are continuous within the frequency band can be implemented based on the same set of hardware, such as a radio frequency unit or a baseband unit, which can reduce the influence of non-ideal factors between different frequency bands, such as carrier frequency offset, time delay or phase difference between different frequency bands.

[0178] For another example, when the first frequency domain resource includes the frequency domain resources of the first frequency band, the second frequency domain resource may also include the frequency domain resources of the first frequency band and may be discontinuous with the first frequency domain resource within the first frequency band, as Figure 7B shown. Compared with the case of continuous frequency bands, non-continuity within the band can achieve a larger virtual bandwidth (the difference between the maximum frequency and the minimum frequency of the signal) based on the same signal bandwidth, which is beneficial to improving the ranging resolution.

[0179] For another example, when the first frequency domain resource includes the frequency domain resources of the first frequency band and the second frequency band, the second frequency domain resource may also include the frequency domain resources within the first frequency band and the second frequency band and may be discontinuous with the first frequency domain resource within the first frequency band and the second frequency band, as Figure 7C shown. Compared with the case of non-continuity within the frequency band, non-continuity between frequency bands can achieve a larger virtual bandwidth (the difference between the maximum frequency and the minimum frequency of the signal) based on the same signal bandwidth, further improving the ranging resolution. However, it is required to be able to perform coherent processing on signals with a large frequency band span, require strict synchronization of the radio frequency, and have very high requirements for the acquisition ability of the analog-to-digital convertor (ADC) and the baseband processing ability.

[0180] For another example, the first frequency-domain resource includes the frequency-domain resources within the first frequency band. The first frequency-domain resource for the second sensing includes the frequency-domain resources within the first frequency band. The first frequency-domain resource for the second sensing includes the first frequency-domain resource for the first sensing. Similarly, the second sensing signal can be sent twice, that is, two sensing operations are performed. And these two sensing operations may not be coherently combined, such as Figure 7D as shown. In some cases, such as when the target motion during the two measurement processes causes a change in the radar cross section (RCS), the signals of the two measurements cannot be coherently combined, but the signal-to-noise ratio of the measurement can be improved through non-coherent combination. Figure 7D In Figure 7D , the first frequency-domain resource and the second frequency-domain resource may be located within the same frequency band, or may also be located in different frequency bands, which is not specifically limited in this application.

[0181] In a possible implementation, the receiving end can determine whether a second sensing is required based on the measurement result of the first sensing signal. If a second sensing is required, the receiving end can execute S502. If a second sensing is not required, the receiving end can not execute S502 and use the estimated value obtained from the measurement result of the first sensing signal as the sensing result.

[0182] In a possible scenario, the receiving end can receive the second information from the control end, and this second information can be used to evaluate the accuracy of the measurement result. The receiving end can determine whether a second sensing is required based on the measurement result of the first sensing signal and the second information. For example, if the receiving end evaluates that the measurement result accuracy of the first sensing signal is high based on the second information, then the receiving end can determine that a second sensing is not required. For another example, if the receiving end evaluates that the measurement result accuracy of the first sensing signal is low based on the second information, then the receiving end can determine that a second sensing is required.

[0183] In an example, the second information may include the parameter threshold of the Fisher information matrix, and this parameter threshold can be determined based on empirical values. This parameter threshold can also be pre-configured or predefined by the protocol, which is not specifically limited in this application. For example, the second information may include one or more of the condition number threshold of the Fisher information matrix, the determinant threshold of the Fisher information matrix, the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix, the minimum eigenvalue threshold of the Fisher information matrix, or the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

[0184] Then the receiving end can determine the Fisher information matrix of the measurement result of the first sensing signal, which can be implemented with reference to the relevant description in Case 2 and will not be elaborated here. Exemplarily, if the condition number of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the condition number threshold of the Fisher information matrix, the receiving end can determine that a second sensing is required and can execute S502. Also, for example, if the determinant of the Fisher information matrix of the measurement result of the first sensing signal is less than or equal to the determinant threshold of the Fisher information matrix, the receiving end can determine that a second sensing is required and can execute S502. Also, for example, if the sum of the reciprocals of the eigenvalues of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the sum of the reciprocals of the eigenvalues of the Fisher information matrix, the receiving end can determine that a second sensing is required and can execute S502. Also, for example, if the minimum eigenvalue of the Fisher information matrix of the measurement result of the first sensing signal is less than or equal to the minimum eigenvalue threshold of the Fisher information matrix, the receiving end can determine that a second sensing is required and can execute S502. Also, for example, if the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix, the receiving end can determine that a second sensing is required and can execute S502.

[0185] It should be noted that the second information can also include other parameter thresholds. The above parameter thresholds of the Fisher information matrix are only shown as examples, and those skilled in the art can know that other parameter thresholds that can evaluate the accuracy of the measurement result can also be used to determine whether a second sensing is required. For example, the second information can include a variance threshold. The receiving end can determine the sensing result according to the measurement result of the first sensing signal, that is, determine the estimated value of the distance or position of the target, and determine the variance of the sensing result. If the variance of the sensing result is greater than or equal to the variance threshold, the receiving end can determine that a second sensing is required and can execute S502. Optionally, in addition to the variance threshold, a peak threshold of the sensing result can also be used to determine whether a second sensing is required, which will not be elaborated here.

[0186] Optionally, Figure 5 The shown implementation can also include S503.

[0187] S503: The transmitting end sends a second sensing signal on the second frequency domain resource.

[0188] Correspondingly, the receiving end receives the second sensing signal on the second frequency domain resource.

[0189] In a possible scenario, if the first information includes the indication information of the second frequency-domain resource, the control end can send the indication information of the second frequency-domain resource to the transmitting end. The transmitting end sends the second sensing signal on the second frequency-domain resource, and the receiving end can receive the second sensing signal on the second frequency-domain resource.

[0190] In another possible scenario, if the first information includes the range information of the target location or the estimated value of the target's location or distance, the control end can determine the second frequency-domain resource based on the method shown in Case 1 or Case 2 above, and send the indication information of the second frequency-domain resource to the transmitting end and the receiving end. The transmitting end sends the second sensing signal on the second frequency-domain resource, and the receiving end can receive the second sensing signal on the second frequency-domain resource. Optionally, the control end may not send the indication information of the second frequency-domain resource to the receiving end, and the receiving end can determine the second frequency-domain resource by itself based on the measurement result of the first sensing signal. It can be understood that the method for the receiving end to determine the second frequency-domain resource needs to be the same as that of the control end. That is to say, if the control end uses Case 1 to determine the second frequency-domain resource, then the receiving end also needs to use Case 1 to determine the second frequency-domain resource.

[0191] It should be noted that whether the receiving end uses Case 1 or Case 2 to determine the second frequency-domain resource can be pre-defined or pre-configured by the protocol, or can also be indicated by the control end. This application does not make specific limitations. In the case where the receiving end uses Case 2 to determine the second frequency-domain resource, which Fisher information parameter is used to determine the second frequency-domain resource can be pre-defined or pre-configured by the protocol, or can also be indicated by the control end. This application does not make specific limitations.

[0192] Similarly, whether the control end uses Case 1 or Case 2 to determine the second frequency-domain resource can be pre-defined or pre-configured by the protocol, or can also be indicated by the receiving end. This application does not make specific limitations. In the case where the control end uses Case 2 to determine the second frequency-domain resource, which Fisher information parameter is used to determine the second frequency-domain resource can be pre-defined or pre-configured by the protocol, or can also be indicated by the receiving end. This application does not make specific limitations.

[0193] For example, the method for determining the second frequency-domain resource can be called an optimization criterion, and each optimization criterion corresponds to an index. The control end or the receiving end can indicate the optimization criterion by sending the index of the optimization criterion. Referring to Table 1, an example of an index table of an optimization criterion is shown.

[0194] Table 1: Example of an index table of an optimization criterion

[0195]

[0196] As shown in Table 1, if the control end or the receiving end sends index 1, the second frequency-domain resource can be determined in the manner shown in Case 1. If the control end or the receiving end sends index 2, the second frequency-domain resource can be determined in the manner shown in Case 2 and by the condition number of the Fisher information matrix, and so on.

[0197] In one example, assume that the transmitting end is a network device. The processing operation of the network device can be performed by the CU, and the transceiver operation of the network device can be performed by the DU or the RU. For example, the DU can receive the indication information of the first frequency-domain resource, or the RU can receive the indication information of the first frequency-domain resource and send the indication information of the first frequency-domain resource to the DU. The DU can send the indication information of the first frequency-domain resource to the CU, and the CU can generate a first sensing signal based on the first frequency-domain resource and send the first sensing signal to the DU. The DU can send the first sensing signal to the receiving end, or the DU can send the first sensing signal to the RU, and the RU can send the first sensing signal to the receiving end.

[0198] In a possible scenario, the processing operation of the network device can be performed by the CU-CP, and the transceiver operation of the network device can be performed by the DU or the RU. For example, the DU can receive the indication information of the first frequency-domain resource, or the RU can receive the indication information of the first frequency-domain resource and send the indication information of the first frequency-domain resource to the DU. The DU can send the indication information of the first frequency-domain resource to the CU-CP, and the CU-CP can generate a first sensing signal based on the first frequency-domain resource and send the first sensing signal to the DU. The DU can send the first sensing signal to the receiving end, or the DU can send the first sensing signal to the RU, and the RU can send the first sensing signal to the receiving end.

[0199] In another example, assume that the receiving end is a network device. The processing operation of the network device can be performed by the CU, and the transceiver operation of the network device can be performed by the DU or the RU. For example, the DU can receive the first sensing signal, or the RU can receive the first sensing signal and send the first sensing signal to the DU. The DU can send the first sensing signal to the CU, and the CU can determine the measurement result of the first sensing signal and generate the first information. The CU can send the first information to the DU, and the DU can send the first information to the control end, or the DU can send the first information to the RU, and the RU can send the first information to the control end.

[0200] In a possible scenario, the processing operations of the network device can be executed by the CU-CP, and the transceiver operations of the network device can be executed by the DU or the RU. For example, the DU can receive the first sensing signal, or the RU can receive the first sensing signal and send the first sensing signal to the DU. The DU can send the first sensing signal to the CU-CP, and the CU-CP can determine the measurement result of the first sensing signal and generate the first information. The CU-CP can send the first information to the DU, and the DU can send the first information to the control end, or the DU can send the first information to the RU, and the RU can send the first information to the control end.

[0201] In another example, assuming that the control end is the network device, the processing operations of the network device can be executed by the CU, and the transceiver operations of the network device can be executed by the DU or the RU. For example, the DU can receive the first information, or the RU can receive the first information and send the first information to the DU. The DU can send the first information to the CU, and the CU can determine the second frequency domain resource and generate the indication information of the second frequency domain resource. The CU can send the indication information of the second frequency domain resource to the DU, and the DU can send the indication information of the second frequency domain resource to the transmitting end and the receiving end, or the DU can send the indication information of the second frequency domain resource to the RU, and the RU can send the indication information of the second frequency domain resource to the transmitting end and the receiving end.

[0202] In a possible scenario, the processing operations of the network device can be executed by the CU-CP, and the transceiver operations of the network device can be executed by the DU or the RU. For example, the DU can receive the first information, or the RU can receive the first information and send the first information to the DU. The DU can send the first information to the CU-CP, and the CU-CP can determine the second frequency domain resource and generate the indication information of the second frequency domain resource. The CU-CP can send the indication information of the second frequency domain resource to the DU, and the DU can send the indication information of the second frequency domain resource to the transmitting end and the receiving end, or the DU can send the indication information of the second frequency domain resource to the RU, and the RU can send the indication information of the second frequency domain resource to the transmitting end and the receiving end.

[0203] In the O-RAN scenario, the operations performed by the above-mentioned CU can be performed by the O-CU, the operations performed by the DU can be performed by the O-DU, the operations performed by the RU can be performed by the O-RU, and the operations performed by the CU-CP can be performed by the O-CU-CP.

[0204] Based on the following embodiments, the communication device provided by the embodiments of the present application will be introduced. Figure 8Schematic block diagram of the communication device 800 provided by the embodiments of the present application. The communication device 800 can correspondingly implement the functions or steps implemented by the transmitting end or the receiving end in the above-mentioned various method embodiments. The communication device may include a processing unit 810 and a transceiver unit 820. Optionally, it may further include a storage unit, which can be used to store instructions (codes or programs) and / or data. The processing unit 810 and the transceiver unit 820 can be coupled to the storage unit. For example, the processing unit 810 can read the instructions (codes or programs) and / or data in the storage unit to implement the corresponding methods. The above-mentioned various units can be set independently, or partially or fully integrated.

[0205] Optionally, the above-mentioned transceiver unit 820 may include a transmitting unit and a receiving unit. Among them, the transmitting unit can be used to perform all the transmitting operations performed by the communication device 800, and the receiving unit can be used to perform all the receiving operations performed by the communication device 800.

[0206] In some possible implementation manners, the communication device 800 can correspondingly implement the behaviors and functions of the transmitting end and the like in the above-mentioned method embodiments. For example, the communication device 800 can be a transmitting end, or a component (such as a chip or a circuit) applied to the transmitting end. The transceiver unit 820 can be used to perform Figure 5 all the receiving or transmitting operations performed by the transmitting end in the illustrated embodiments. For example Figure 5 S501 in the illustrated embodiments, and / or other processes for supporting the technologies described herein; among them, the processing unit 810 is used to perform Figure 5 all the operations other than the transceiver operations performed by the transmitting end in the illustrated embodiments.

[0207] For example, the transceiver unit 820 is used to receive a first sensing signal on a first frequency-domain resource. The processing unit 810 is used to generate first information based on the measurement result of the first sensing signal. Among them, the first information is used to determine a second frequency-domain resource, and the second frequency-domain resource is determined according to the measurement result of the first sensing signal. The transceiver unit 820 is further used to send the first information.

[0208] In some possible implementation manners, the communication device 800 can correspondingly implement the behaviors and functions of the receiving end in the above-mentioned method embodiments. For example, the communication device 800 can be a receiving end, or a component (such as a chip or a circuit) applied to the receiving end. The transceiver unit 820 can be used to perform Figure 5 all the receiving or transmitting operations performed by the receiving end in the illustrated embodiments. For example Figure 5 S502 in the illustrated embodiments, and / or other processes for supporting the technologies described herein; among them, the processing unit 810 is used to perform Figure 5All operations other than the transceiver operations performed by the receiving end in the illustrated embodiment.

[0209] For example, the transceiver unit 820 is configured to transmit a first sensing signal on a first frequency-domain resource. The transceiver unit 820 is further configured to receive first information for determining a second frequency-domain resource, where the second frequency-domain resource is determined according to the measurement result of the first sensing signal. The processing unit 810 is configured to determine the second frequency-domain resource based on the first information.

[0210] For the operations performed by the processing unit 810 and the transceiver unit 820, reference may be made to the relevant descriptions in the foregoing method embodiments.

[0211] It should be understood that the processing unit 810 in the embodiments of the present application may be implemented by a processor or processor-related circuit components, and the transceiver unit 820 may be implemented by a transceiver or transceiver-related circuit components or a communication interface.

[0212] Based on the same concept, as Figure 9 shown, an embodiment of the present application provides a communication device 900. The communication device 900 includes a processor 910. Optionally, the communication device 900 may further include a memory 920 for storing instructions executed by the processor 910 or input data required for the processor 910 to run the instructions or data generated after the processor 910 runs the instructions. The processor 910 may implement the method shown in the foregoing method embodiments through the instructions stored in the memory 920.

[0213] Based on the same concept, as Figure 10 shown, an embodiment of the present application provides a communication device 10000, which may be a chip or a chip system. Optionally, in the embodiments of the present application, the chip system may be composed of chips or may include chips and other discrete devices.

[0214] The communication device 10000 may include at least one processor 1010, and the processor 1010 is coupled to a memory. Optionally, the memory may be located inside or outside the device. For example, the communication device 10000 may further include at least one memory 1020. The memory 1020 stores necessary computer programs, configuration information, computer programs or instructions and / or data in any of the foregoing embodiments; the processor 1010 may execute the computer programs stored in the memory 1020 to complete the method in any of the foregoing embodiments.

[0215] The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be in electrical, mechanical or other forms and is used for information interaction between devices, units or modules. The processor 1010 may cooperate with the memory 1020. In the embodiments of the present application, the specific connection medium between the transceiver 1030, the processor 1010 and the memory 1020 is not limited.

[0216] The communication device 10000 may further include a transceiver 1030. The communication device 10000 can interact with other devices through the transceiver 1030. The transceiver 1030 may be a circuit, a bus, a transceiver or any other device that can be used for information interaction, or is referred to as a signal transceiver unit. As Figure 10 shown, the transceiver 1030 includes a transmitter 1031, a receiver 1032 and an antenna 1033. In addition, when the communication device 10000 is a chip-like device or circuit, the transceiver in the communication device 10000 may also be an input / output circuit and / or a communication interface, which can input data (or referred to as receiving data) and output data (or referred to as sending data). The processor is an integrated processor, a microprocessor or an integrated circuit, and the processor can determine the output data according to the input data.

[0217] In a possible implementation manner, the communication device 10000 can be applied to the transmitting end. Specifically, the communication device 10000 can be the transmitting end, or can be a device that can support the transmitting end to implement the functions of the transmitting end in any of the above-mentioned embodiments. The memory 1020 stores the necessary computer programs, computer programs or instructions and / or data for implementing the functions of the communication device in any of the above-mentioned embodiments. The processor 1010 can execute the computer programs stored in the memory 1020 to complete the methods executed by the transmitting end in any of the above-mentioned embodiments.

[0218] In a possible implementation manner, the communication device 10000 can be applied to the receiving end. Specifically, the communication device 10000 can be the receiving end, or can be a device that can support the receiving end to implement the functions of the receiving end in any of the above-mentioned embodiments. The memory 1020 stores the necessary computer programs, computer programs or instructions and / or data for implementing the functions of the receiving end in any of the above-mentioned embodiments. The processor 1010 can execute the computer programs stored in the memory 1020 to complete the methods executed by the receiving end in any of the above-mentioned embodiments.

[0219] Since the communication device 10000 provided in this embodiment can be applied to the transmitting end to complete the methods executed by the transmitting end, or can be applied to the receiving end to complete the methods executed by the receiving end. Therefore, the technical effects that can be obtained can refer to the above method embodiments and will not be elaborated here.

[0220] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0221] In the embodiments of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory, such as a random-access memory (RAM). The memory may also be any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing computer programs, computer programs or instructions, and / or data.

[0222] Based on the above embodiments, refer to Figure 11 , the embodiments of the present application further provide another communication device 1100, including: an input / output interface 1110 and a logic circuit 1120; the input / output interface 1110 is used to receive code instructions and transmit them to the logic circuit 1120; the logic circuit 1120 is used to run the code instructions to execute the method executed by the transmitter or the receiver in any of the above embodiments.

[0223] Optionally, the input / output interface 1110 may be an interface on the chip, and the logic circuit 1120 may be one or more processors. Optionally, the one or more processors may be located inside the device or outside the device.

[0224] Hereinafter, the operations performed by the communication device when applied to the transmitter or the receiver will be described in detail.

[0225] In an optional implementation manner, the communication device 1100 may be applied to the transmitter to execute the method executed by the transmitter, specifically, for example, the method executed by the transmitter in the embodiment shown in the foregoing Figure 5 shown embodiment.

[0226] For example, the input / output interface 1110 is used to receive a first sensing signal on a first frequency-domain resource. The logic circuit 1120 is used to generate first information based on the measurement result of the first sensing signal. The first information is used to determine a second frequency-domain resource, and the second frequency-domain resource is determined according to the measurement result of the first sensing signal. The input / output interface 1110 is further used to send the first information.

[0227] Since the communication device 1100 provided in this embodiment can be applied to the transmitting end to complete the method executed by the transmitting end, the technical effects that can be obtained can refer to the above method embodiment and will not be elaborated here.

[0228] In an alternative embodiment, the communication device 1100 can be applied to the receiving end to execute the method executed by the receiving end, specifically, for example, the method executed by the receiving end in the foregoing Figure 5 embodiment shown.

[0229] For example, the input / output interface 1110 is used to send a first sensing signal on a first frequency-domain resource. The input / output interface 1110 is further used to receive first information, and the first information is used to determine a second frequency-domain resource, and the second frequency-domain resource is determined according to the measurement result of the first sensing signal. The logic circuit 1120 is used to determine the second frequency-domain resource based on the first information.

[0230] Since the communication device 1100 provided in this embodiment can be applied to the receiving end to complete the method executed by the receiving end, the technical effects that can be obtained can refer to the above method embodiment and will not be elaborated here.

[0231] Based on the above embodiments, the embodiments of the present application further provide a communication system. The communication system includes at least one communication device applied to the transmitting end and at least one communication device applied to the receiving end. The technical effects that can be obtained can refer to the above method embodiment and will not be elaborated here.

[0232] Based on the above embodiments, the embodiments of the present application further provide a system. The communication system includes at least one receiving end and one transmitting end.

[0233] Based on the above embodiments, the embodiments of the present application further provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the instruction is executed, the method executed by the transmitting end in any of the above embodiments or the method executed by the receiving end is implemented. The computer-readable storage medium may include: various media such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disc that can store program codes.

[0234] To achieve the above Figures 8 to 11Regarding the functions of the communication device, embodiments of the present application further provide a chip, including a processor, which is used to support the communication device to implement the functions involved in the transmitter or receiver in the above method embodiments. In a possible design, the chip is connected to a memory or the chip includes a memory, and the memory is used to store the necessary computer programs or instructions and data of the communication device.

[0235] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0236] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer programs or instructions. These computer programs or instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, so that the instructions executed by the processors of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0237] These computer programs or instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured product including an instruction device, and the instruction device implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0238] These computer programs or instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0239] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A sensing method, characterized in that, it includes: Receiving a first sensing signal on a first frequency-domain resource; Based on the measurement result of the first sensing signal, sending first information, where the first information is used to determine a second frequency-domain resource, and the second frequency-domain resource is determined according to the measurement result of the first sensing signal.

2. The method according to claim 1, characterized in that, it further includes: Receiving a second sensing signal based on the second frequency-domain resource.

3. The method according to claim 1 or 2, characterized in that, it further includes: Receiving second information, where the second information is used to evaluate the accuracy of the measurement result; The sending of the indication information of the second frequency-domain resource based on the measurement result of the first sensing signal includes: Sending the first information based on the measurement result of the first sensing signal and the second information.

4. The method according to any one of claims 1 to 3, characterized in that, The first information includes range information of the target location or an estimated value of the target's location or distance, and the estimated value is obtained based on the measurement result of the first sensing signal; or the first information includes the indication information of the second frequency-domain resource.

5. The method according to any one of claims 1 to 4, characterized in that, The second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are continuous in the frequency domain; or, the second frequency-domain resource and the first frequency-domain resource are in the same frequency band and are not continuous in the frequency domain; or, the second frequency-domain resource and the first frequency-domain resource are in different frequency bands and are not continuous in the frequency domain.

6. The method according to any one of claims 1 to 5, characterized in that, The first frequency-domain resource includes the frequency-domain resource of the first frequency band and / or the frequency-domain resource of the second frequency band; the first frequency band and the second frequency band are different.

7. The method according to any one of claims 1 to 6, characterized in that, Before receiving the first sensing signal on the first frequency-domain resource, it further includes: Receiving request information, where the request information is used to request sensing capability information, and the sensing capability information includes the supported frequency bands and the supported bandwidths; Sending the sensing capability information.

8. The method according to any one of claims 1 to 7, characterized in that, The second frequency-domain resource is determined according to the column correlation of the first sensing signal and the second sensing signal, or the second frequency-domain resource is determined according to the Fisher information matrix of the measurement result of the first sensing signal.

9. The method according to claim 8, characterized in that, The second frequency-domain resource satisfies one or more of the following: Minimizing the column correlation matrix of the measurement results of the first sensing signal and the second sensing signal; the second sensing signal is carried on the second frequency-domain resource; Or Minimizing the condition number of the Fisher information matrix; Or Minimizing the sum of the reciprocals of the eigenvalues of the Fisher information matrix; or Maximizing the determinant of the Fisher information matrix; Or Maximizing the minimum eigenvalue of the Fisher information matrix; or Minimizing the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix.

10. The method according to claim 3, wherein, the second information includes one or more of the following: the condition number threshold of the Fisher information matrix, the determinant threshold of the Fisher information matrix, the sum-of-reciprocals-of-eigenvalues threshold of the Fisher information matrix, the minimum eigenvalue threshold of the Fisher information matrix, or the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

11. The method according to claim 10, wherein, sending the first information based on the measurement result of the first sensing signal and the first information includes: determining the Fisher information matrix of the measurement result based on the measurement result of the first sensing signal; when the condition number of the Fisher information matrix is greater than or equal to the condition number threshold of the Fisher information matrix, sending the first information; or when the determinant of the Fisher information matrix is less than or equal to the determinant threshold of the Fisher information matrix, sending the first information; or when the sum of the reciprocals of the eigenvalues of the Fisher information matrix is greater than or equal to the sum-of-reciprocals-of-eigenvalues threshold of the Fisher information matrix, sending the first information; or when the minimum eigenvalue of the Fisher information matrix is less than or equal to the minimum eigenvalue threshold of the Fisher information matrix, sending the first information; or when the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix is greater than or equal to the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix, sending the first information.

12. A sensing method, wherein, it includes: sending a first sensing signal on a first frequency domain resource; receiving first information for determining a second frequency domain resource, where the second frequency domain resource is determined according to the measurement result of the first sensing signal.

13. The method according to claim 12, wherein, it further includes: sending a second sensing signal based on the second frequency domain resource.

14. The method according to claim 12 or 13, wherein, it further includes: sending second information for evaluating the accuracy of the measurement result; the first information is sent based on the measurement result of the first sensing signal and the second information.

15. The method according to any one of claims 12 to 14, wherein, the first information includes range information of the target location or an estimated value of the target's location or distance, where the estimated value is obtained based on the measurement result of the first sensing signal, or the first information includes indication information of the second frequency domain resource.

16. The method according to any one of claims 12 to 15, wherein, the second frequency domain resource and the first frequency domain resource are in the same frequency band and are continuous in the frequency domain; or the second frequency domain resource and the first frequency domain resource are in the same frequency band and are discontinuous in the frequency domain; or the second frequency domain resource and the first frequency domain resource are in different frequency bands and are discontinuous in the frequency domain.

17. The method according to any one of claims 12 to 16, wherein, The first frequency-domain resource includes the frequency-domain resource of the first frequency band and / or the frequency-domain resource of the second frequency band; the first frequency band and the second frequency band are different.

18. The method according to any one of claims 12 to 17, wherein, further comprising: sending request information, the request information being used to request sensing capability information, the sensing capability information including supported frequency bands and supported bandwidths; receiving the sensing capability information.

19. The method according to any one of claims 12 to 18, wherein, the second frequency-domain resource is determined according to the column correlation of the measurement result of the first sensing signal, or the second frequency-domain resource is determined according to the Fisher information matrix of the measurement result of the first sensing signal.

20. The method according to claim 19, wherein, the second frequency-domain resource satisfies one or more of the following: minimizing the column correlation matrix of the measurement results of the first sensing signal and the second sensing signal; the second sensing signal is carried on the second frequency-domain resource; or minimizing the condition number of the Fisher information matrix; or minimizing the sum of the reciprocals of the eigenvalues of the Fisher information matrix; or maximizing the determinant of the Fisher information matrix; or maximizing the minimum eigenvalue of the Fisher information matrix; or minimizing the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix.

21. The method according to claim 14, wherein, the second information includes one or more of the following: the condition number threshold of the Fisher information matrix, the determinant threshold of the Fisher information matrix, the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix, the minimum eigenvalue threshold of the Fisher information matrix, or the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

22. The method according to claim 21, wherein, the condition number of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the condition number threshold of the Fisher information matrix; or, the determinant of the Fisher information matrix of the measurement result of the first sensing signal is less than or equal to the determinant threshold of the Fisher information matrix; or, the sum of the reciprocals of the eigenvalues of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the sum of the reciprocals of the eigenvalues threshold of the Fisher information matrix; or, the minimum eigenvalue of the Fisher information matrix of the measurement result of the first sensing signal is less than or equal to the minimum eigenvalue threshold of the Fisher information matrix; or, the maximum value of the main diagonal elements of the inverse matrix of the Fisher information matrix of the measurement result of the first sensing signal is greater than or equal to the maximum value threshold of the main diagonal elements of the inverse matrix of the Fisher information matrix.

23. A communication device, wherein, it includes a unit for executing the method according to any one of claims 1 to 11, or includes a unit for executing the method according to any one of claims 12 to 22.

24. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer-executable instructions that, when called by an electronic device, cause the electronic device to execute the method according to any one of claims 1 to 11, or cause the electronic device to execute the method according to any one of claims 12 to 22.

25. A communication system, characterized in that it includes a device for executing the method according to any one of claims 1 to 11 and a device for executing the method according to any one of claims 12 to 22.

26. A chip system, characterized in that the chip system includes: a communication interface; a processor for calling and running the instructions through the communication interface, so that a device installed with the chip system executes the method according to any one of claims 1 to 11, or so that a device installed with the chip system executes the method according to any one of claims 12 to 22.

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