A communication method, apparatus, and storage medium

Abstract

Embodiments of the present application provide a communication method, device and storage medium, which are applied to the technical field of wireless communication. The method comprises: a communication device receives a first signal, the first signal being used to determine a first distance from the communication device to a detection target; a target detection mode is determined according to the first distance; and a scattering cross-section area of the detection target is determined according to the target detection mode. In the method, the communication device can determine the first distance from the communication device to the detection target according to the received first signal, and then determine the scattering cross-section area of the detection target according to the target detection mode adapted to the first distance. In this way, the communication device can target the detection target for sensing, improve the accuracy of target sensing, and then improve the sensing performance of the communication device.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of wireless communication, and particularly relate to a communication method, apparatus, and storage medium. BACKGROUND

[0002] With the development of wireless communication technology, wireless frequencies are gradually increasing. The increase in wireless frequencies can improve the sensing accuracy of integrated sensing and communication (ISAC) technology on a detection target.

[0003] However, the current ISAC technology still cannot accurately sense the detection target, thereby affecting the sensing performance of the communication device. SUMMARY

[0004] Embodiments of the present application provide a communication method, apparatus, and storage medium. The communication device can adapt a target detection mode for determining the scattering cross-section area of the detection target according to the distance from the communication device to the detection target, so that the communication device can target the detection target for sensing, improve the accuracy of target sensing, and further improve the sensing performance of the communication device.

[0005] To achieve the above object, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the embodiments of the present application provide a communication method, which can be applied to a communication device. As an example, the communication device can be a network device, a communication module, a circuit or chip responsible for communication function, a chip system, or other components or assemblies. The communication module, the circuit or chip responsible for communication function, the chip system, or other components or assemblies can be applied to the network device. The method comprises:

[0007] receiving a first signal, the first signal being used to determine a first distance from the communication device to a detection target;

[0008] determining a target detection mode according to the first distance;

[0009] determining a scattering cross-section area of the detection target according to the target detection mode.

[0010] Based on the communication method provided by the embodiments of the present application, the communication device can determine the first distance from the communication device to the detection target according to the received first signal, and then determine the scattering cross-section area of the detection target according to the target detection mode adapted to the first distance. In this way, the communication device can target the detection target for sensing, improve the accuracy of target sensing, and further improve the sensing performance of the communication device.

[0011] In a possible implementation manner of the communication method provided in the first aspect, the target detection mode determined according to the first distance can include the following.

[0012] In a case where the first distance is less than or equal to the first threshold, the target detection mode is a near-field detection mode.

[0013] In a case where the first distance is greater than the first threshold, the target detection mode is a far-field detection mode.

[0014] Therefore, the target detection mode for determining the scattering cross section of the detection target can be accurately and conveniently determined according to the size relationship between the first distance and the first threshold.

[0015] In a case where the first distance is less than or equal to the first threshold, the target detection mode is a near-field detection mode, because the detection target is in a near-field detection area of the communication device.

[0016] Therefore, in a case where the detection target is in the near-field detection area, the communication device can determine the scattering cross section of the detection target according to the near-field detection mode instead of the far-field detection mode, so that the detection target can be perceived in a targeted manner, the accuracy of target perception is improved, and the perception performance of the communication device is further improved.

[0017] In a case where the first distance is greater than the first threshold, the target detection mode is a far-field detection mode, because the detection target is in a far-field detection area of the communication device.

[0018] Therefore, in a case where the detection target is in the far-field detection area, the communication device can determine the scattering cross section of the detection target according to the far-field detection mode instead of the near-field detection mode, so that the detection target can be perceived in a targeted manner, the accuracy of target perception is improved, and the perception performance of the communication device is further improved.

[0019] In a possible implementation manner of the communication method provided in the first aspect, before the scattering cross section of the detection target is determined according to the target detection mode, the communication method can further include the following.

[0020] The detection signal is transmitted.

[0021] The echo signal of the detection signal is received.

[0022] Therefore, the communication device can determine the distance, direction, angle, and the like of the detection target relative to the communication device according to the echo signal, and further obtain the scattering cross section of the detection target.

[0023] In a possible implementation manner, in a case where the first distance is less than or equal to the first threshold, the scattering cross section of the detection target is determined according to the target detection mode, which can include the following.

[0024] The scattering cross section of the detection target in the near-field detection region can be determined according to a near-field detection mode, wherein the scattering cross section can be related to a power compensation factor in a near-field range, and the power compensation factor in the near-field range can be related to an antenna array size of the communication device, a wavelength of the detection signal transmitted by the communication device, and the first distance.

[0025] In a possible implementation, the power compensation factor in the near-field range can be an approximate correction based on a spherical wave propagation amplitude empirical formula, which can be used to capture the influence of the near-field spherical wave on the received power of the communication device. As an example, the aforementioned power compensation factor in the near-field range can satisfy the following relationship:

[0026] ;

[0027] wherein, denotes the power compensation factor in the near-field range, denotes the wavelength of the detection signal transmitted by the communication device, denotes the first distance, denotes the antenna array size of the communication device.

[0028] Therefore, in the process of determining the scattering cross section of the detection target in the near-field detection region, the influence of the power compensation factor in the near-field range on the received power of the communication device can be focused on.

[0029] In a possible implementation, when the first distance is less than or equal to a first threshold, the aforementioned scattering cross section can also be related to at least one of the following parameters: the power of the echo signal of the detection signal received by the communication device, the power when the detection signal is transmitted by the communication device, the transmit antenna gain of the communication device, the receive antenna gain of the communication device, or the first distance.

[0030] Therefore, the scattering cross section of the detection target in the near-field detection region can be accurately determined in combination with the at least one parameter.

[0031] In a possible implementation, the scattering cross section can satisfy the following relationship:

[0032] ;

[0033] wherein, denotes the power of the echo signal of the detection signal received by the communication device, denotes the power when the detection signal is transmitted by the communication device, denotes the transmit antenna gain of the communication device, denotes the receive antenna gain of the communication device, denotes the wavelength of the detection signal transmitted by the communication device, denotes the first distance, and RCS denotes the scattering cross section area. denotes a power compensation factor in a near field range.

[0034] Therefore, the communication device can adopt a detection mode adapted to the near field detection area, determine the scattering cross section area of the detection target in the near field detection area, improve the accuracy of determining the scattering cross section area, and further improve the accuracy of the communication device in perceiving the detection target, thereby improving the perception performance of the communication device.

[0035] In a possible implementation, when the first distance is greater than the first threshold, the foregoing determining the scattering cross section area of the detection target according to the target detection mode can include:

[0036] determining the scattering cross section area of the detection target according to a far field detection mode, wherein the scattering cross section area can be related to at least one of the following parameters: the power of the echo signal of the detection signal received by the communication device, the power when the communication device transmits the detection signal, the transmit antenna gain of the communication device, the receive antenna gain of the communication device, the wavelength of the detection signal transmitted by the communication device, or the first distance.

[0037] In a possible implementation, when the first distance is greater than the first threshold, the scattering cross section area can satisfy the following relationship:

[0038] ;

[0039] wherein, denotes the power of the echo signal of the detection signal received by the communication device, denotes the power when the communication device transmits the detection signal, denotes the transmit antenna gain of the communication device, denotes the receive antenna gain of the communication device, denotes the wavelength of the detection signal transmitted by the communication device, denotes the first distance, and RCS denotes the scattering cross section area.

[0040] Therefore, the communication device can adopt a detection mode adapted to the far field detection area, determine the scattering cross section area of the detection target in the far field detection area, improve the accuracy of determining the scattering cross section area, and further improve the accuracy of the communication device in perceiving the detection target, thereby improving the perception performance of the communication device.

[0041] In a possible implementation, the communication method can further include:

[0042] receiving a second signal;

[0043] measuring a second distance according to the second signal;

[0044] determining the first detection mode according to the second distance;

[0045] receiving a third signal;

[0046] measuring a third distance according to the third signal;

[0047] determining a second detection mode according to the third distance;

[0048] if the second detection mode is same as the first detection mode, determining the second detection mode as a target detection mode.

[0049] wherein the second detection mode and the first detection mode are two adjacent detection modes, and the second detection mode and the first detection mode can both be near-field detection modes or far-field detection modes.

[0050] Thus, by confirming the detection mode corresponding to the detection region where the detection target is located multiple times, and determining the detection mode as the target detection mode only when the two adjacent detection modes are same, the problem of inaccurate determination of the target detection mode caused by repeated lateral movement of the detection target at the boundary between the near-field detection region and the far-field detection region can be avoided, and the accuracy of sensing the detection target can be improved, thereby further improving the sensing performance of the communication device.

[0051] In a possible implementation, before receiving the second signal, the foregoing communication method can further include:

[0052] receiving a fourth signal;

[0053] measuring a fourth distance according to the fourth signal;

[0054] determining a third detection mode according to the fourth distance, and the third detection mode is different from the first detection mode.

[0055] wherein the third detection mode and the first detection mode are two adjacent detection modes.

[0056] Thus, by confirming whether the two adjacent detection modes are same, the problem of inaccurate determination of the target detection mode caused by repeated lateral movement of the detection target at the boundary between the near-field detection region and the far-field detection region can be avoided, the accuracy of determining the target detection mode can be improved, and the accuracy of determining the scattering cross-section area of the detection target according to the target detection mode can be improved, thereby improving the accuracy of the communication device in sensing the detection target.

[0057] In a possible implementation, the first signal can be a positioning signal sent by the detection target or a reflected echo signal.

[0058] Thus, the communication device can determine the distance (which can be referred to as a detection distance) between the detection target and the communication device based on multiple different types of signals, and the flexibility of determining the detection distance can be improved.

[0059] In a possible implementation, the scattering cross section can be related to a near-field direct echo related scattering cross section, and the near-field direct echo related scattering cross section can be related to the first distance.

[0060] In the embodiments of the present application, the first distance can change with the movement of the detection target, and correspondingly, the near-field direct echo related scattering cross section can change with the change of the first distance. In this way, by establishing the correlation between the scattering cross section of the detection target and the near-field direct echo related scattering cross section, the change of the scattering cross section in the near-field detection area can be considered in the process of determining the scattering cross section of the detection target, so that the scattering cross section of the detection target in the near-field detection area can be determined more accurately, thereby improving the accuracy of the communication device in perceiving the detection target, and further improving the perception performance of the communication device.

[0061] In a possible implementation, in the case that the scattering cross section is related to the near-field direct echo related scattering cross section, the scattering cross section can be related to at least one of the following parameters: the average scattering cross section, the tilt angle correction factor of the detection target, or the far-field scattering echo related scattering cross section.

[0062] In this way, the influence of various parameters on the scattering cross section of the detection target in the near-field detection area can be considered in the process of determining the scattering cross section, and the accuracy of determining the scattering cross section can be improved.

[0063] In a possible implementation, the scattering cross section can satisfy the following relationship:

[0064] ;

[0065] wherein RCS represents the scattering cross section, A represents the average scattering cross section, B1 represents the tilt angle correction factor of the detection target, C1 represents the near-field direct echo related scattering cross section, and C2 represents the far-field scattering echo related scattering cross section.

[0066] In a possible implementation, the near-field direct echo related scattering cross section and the first distance can satisfy the following relationship:

[0067] ;

[0068] wherein, C1 represents the near-field direct echo related scattering cross section, R1 represents the first distance, R represents the reflection field intensity of the communication device, I represents the incident field intensity at the detection target, R represents the reflection field intensity of the communication device is a function related to the first distance, represents the incident field strength at the probe target as a function of the first distance, represents a differential element in calculus.

[0069] In a second aspect, embodiments of the present application provide a communication method, which can be applied to a communication device. As an example, the communication device can be a network device, a communication module, a circuit or chip responsible for communication function, a chip system, or other components or assemblies. The communication module, the circuit or chip responsible for communication function, the chip system, or other components or assemblies can be applied in the network device. The method comprises:

[0070] receiving a first signal, the first signal being used to determine a first distance from the communication device to a probe target;

[0071] determining a scattering cross section of the probe target, the scattering cross section being related to a near-field direct echo related scattering cross section, the near-field direct echo related scattering cross section being related to the first distance.

[0072] Based on the communication method provided in the embodiments of the present application, the scattering cross section of the probe target can be associated with the near-field direct echo, so that in the process of perceiving the probe target by the communication device, the characteristics of the probe target in the near-field range can be considered, and the performance of the communication device in perceiving the probe target can be improved.

[0073] With reference to the communication method provided in the second aspect, in a possible implementation, the scattering cross section can be further related to at least one of the following parameters: an average scattering cross section, a tilt angle correction factor of the probe target, or a far-field scattering echo related scattering cross section.

[0074] In this way, the influence of various parameters on the scattering cross section of the probe target in the near-field detection area can be considered in the process of determining the scattering cross section, and the accuracy of determining the scattering cross section can be improved.

[0075] In a possible implementation, the scattering cross section can satisfy the following relationship:

[0076] ;

[0077] wherein RCS represents the scattering cross section, A represents the average scattering cross section, B1 represents the tilt angle correction factor of the probe target, represents the near-field direct echo related scattering cross section, and C2 represents the far-field scattering echo related scattering cross section.

[0078] In a possible implementation, the near-field direct echo related scattering cross section and the first distance can satisfy the following relationship:

[0079] ;

[0080] wherein, denotes the scattering cross section associated with the near field direct echo, denotes the first distance, denotes the reflection field strength of the communication device, denotes the incident field strength at the detection target, denotes that the reflection field strength of the communication device is a function of the first distance, denotes that the incident field strength at the detection target is a function of the first distance, denotes a differential element in calculus.

[0081] In a third aspect, an embodiment of the present application provides a communication apparatus applied to a communication device, the apparatus comprising: a module for executing the method in the first aspect and any possible implementation manner of the first aspect, or a module for executing the method in the second aspect and any possible implementation manner of the second aspect.

[0082] In a fourth aspect, a communication system is provided, comprising: a communication device, the communication device being configured to execute the method in the first aspect, or the communication device being configured to execute the method in the second aspect.

[0083] In a fifth aspect, a communication apparatus is provided, comprising: a transceiver, a processor and a memory. The memory stores computer programs or instructions, the processor is configured to control the transceiver to transceive signals, and the processor is configured to invoke and run the computer programs or instructions stored in the memory, so that the processor implements the method in the first aspect and any possible implementation manner of the first aspect, or the processor implements the method in the second aspect and any possible implementation manner of the second aspect.

[0084] In a sixth aspect, a communication apparatus is provided, comprising: a processor, and the processor is configured to invoke computer programs or instructions in a memory, so that the communication apparatus executes the method in the first aspect and any possible implementation manner of the first aspect, or the communication apparatus executes the method in the second aspect and any possible implementation manner of the second aspect.

[0085] Optionally, the communication apparatus further comprises: a memory configured to store program instructions, and the processor is coupled to the memory through an interface.

[0086] In a seventh aspect, a chip apparatus is provided, comprising a processor, and the processor is configured to invoke computer programs or instructions in a memory, so that the processor executes the method in the first aspect and any possible implementation manner of the first aspect, or the processor executes the method in the second aspect and any possible implementation manner of the second aspect.

[0087] Optionally, the processor is coupled with the memory through an interface.

[0088] In an eighth aspect, a chip is provided, including: an interface circuit and a logic circuit, the interface circuit is configured to receive a signal from another chip outside the chip and transmit the signal to the logic circuit, or send a signal from the logic circuit to another chip outside the chip, and the logic circuit is configured to implement the method in the first aspect and any possible implementation manner of the aspect, or the logic circuit is configured to implement the method in the second aspect and any possible implementation manner of the aspect.

[0089] In a ninth aspect, a computer readable storage medium is provided, the computer readable storage medium stores a computer program or instructions, the computer program or instructions are configured to execute the method in the first aspect and any possible implementation manner of the aspect, or the computer program or instructions are configured to execute the method in the second aspect and any possible implementation manner of the aspect.

[0090] In a tenth aspect, a computer program product is provided, when the computer program product is run on a computer, the computer program product causes the computer to execute the method in the first aspect and any possible implementation manner of the aspect, or the computer program product causes the computer to execute the method in the second aspect and any possible implementation manner of the aspect. BRIEF DESCRIPTION OF DRAWINGS

[0091] Figure 1 A schematic diagram of an architecture of a perception system provided by an embodiment of the present application;

[0092] Figure 2 A schematic diagram of a near field and far field scene position provided by an embodiment of the present application;

[0093] Figure 3 A schematic diagram of a flow of a communication method provided by an embodiment of the present application;

[0094] Figure 4 A flow example diagram for determining whether the two determined detection modes are the same provided by an embodiment of the present application;

[0095] Figure 5 A schematic diagram of a flow of another communication method provided by an embodiment of the present application;

[0096] Figure 6 A schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application;

[0097] Figure 7 A schematic diagram of a hardware structure of another communication device provided by an embodiment of the present application;

[0098] Figure 8Fig. 2 is a schematic diagram of a hardware structure of another communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0099] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the embodiments of the present application, “at least one” means one or more, and “multiple” means two or more than two, unless otherwise specified. In addition, in order to clearly describe the technical solutions in the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same functions and roles are distinguished by using “first”, “second”, etc. The person skilled in the art can understand that “first”, “second”, etc. do not limit the quantity and execution order, and “first”, “second”, etc. also do not necessarily mean different. It should also be understood that the term “and / or” is used to describe the association relationship of the associated objects, which means that there can be three relationships; for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects before and after it.

[0100] In the embodiments of the present application, the reference to “one embodiment” or “some embodiments” means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements “in one embodiment”, “in some embodiments”, “in other some embodiments”, “in other some embodiments” and the like appearing in different places in the embodiments of the present application do not necessarily refer to the same embodiment, but mean “one or more but not all embodiments”, unless otherwise specifically emphasized. The terms “include”, “contain”, “have” and their variants mean “include but not limited to”, unless otherwise specifically emphasized.

[0101] In the embodiments of the present application, the words “exemplarily” or “for example” are used to mean as an example, illustration or description. Any embodiment or design scheme described as “exemplarily” or “for example” in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words “exemplarily” or “for example” are used to present the relevant concept in a specific manner.

[0102] An embodiment of the present application provides a communication method, which can be applied to a communication system. The communication system may include but is not limited to: a wireless communication system, such as a narrowband Internet of things (NB-IoT) system, a global system for mobile communications (GSM), an enhanced data rate for GSM evolution (EDGE), a wideband code division multiple access (WCDMA), a code division multiple access 2000 (CDMA2000), a time division-synchronization code division multiple access (TD-SCDMA), a long term evolution (LTE) system of universal mobile communication technology, the fifth generation (5G) wireless communication system, other wireless communication systems, and future wireless communication systems.

[0103] To facilitate understanding of the embodiments of the present application, the following first describes a communication system applicable to the embodiments of the present application.

[0104] See also Figure 1 , Figure 1 This is a schematic diagram of the architecture of a perception system provided in an embodiment of the present application. The perception system here can be regarded as a communication system in a synaesthesia integration scenario. Figure 1 As shown, the perception system provided in an embodiment of the present application may include: a network device 10 and at least one detection target (detection target 20, detection target 30, and detection target 40), which may also be referred to as a perception target. The network device 10 may communicate with any of the multiple detection targets (e.g., detection target 20, detection target 30, and detection target 40), and the network device 10 may also perceive information such as the position, distance, and speed of any of the multiple detection targets (detection target 20, detection target 30, and detection target 40).

[0105] In some examples, the network device 10 can emit a probe signal (e.g., an electromagnetic wave) to a probe target (e.g., the probe target 20), receive a return signal after the probe signal is reflected or scattered by the probe target 20, and then perceive the position, distance, and / or speed of the probe target 20 and the like according to the return signal. In addition, the network device 10 can also monitor, track, identify, image, and the like of the probe target, event, or environment, and the like. It should be understood that the above-mentioned types of probe targets are only examples and do not constitute a limitation on the present solution.

[0106] The network device 10 can be a base station, or a radar, or an access point, or an access network device, or can refer to a device in an access network that communicates with wireless terminals over an air interface with one or more cells. The network device 10 can be configured to convert received air frames to Internet Protocol (IP) packets and vice versa, as a router between wireless terminals and the rest of the access network, which can include an IP network. The network device 10 can also coordinate management of properties of the air interface. For example, the network device 10 can be a satellite, a drone, a base transceiver station (BTS) in a global system of mobile communication (GSM) or code division multiple access (CDMA), a NodeB (NB) in wideband code division multiple access (WCDMA), an evolutional node B (eNB or eNodeB) in LTE, a radio controller in a cloud radio access network (CRAN) scenario, or a wearable device or a vehicle-mounted device, a vehicle-to-everything (V2X), device-to-device (D2D), and machine-to-machine (M2M) communication terminal or relay station or access point that assumes a base station function, or a base station in a 5G network, such as a gNB, or a base station in a future network, or a network device in a future evolution of a public land mobile network (PLMN) network, and the like, without limitation.

[0107] Further, as an example, the network device 10 can be a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or assemblies. The communication module, the circuit or chip responsible for communication functions, the chip system, or other components or assemblies can be applied in a network device.

[0108] The related technologies involved in the embodiments of the present application are introduced below.

[0109] Near Field: refers to a region close to a radiation source (such as an antenna, a sound source) or a light source (such as less than 1 wavelength), and the wave front of the electromagnetic wave or sound wave in the near field region is a spherical wave.

[0110] Far Field: refers to a region far from a radiation source, and the wave front of the electromagnetic wave or sound wave in the far field region is approximately a plane wave.

[0111] Rayleigh Distance: refers to a demarcation distance for distinguishing between a near field region and a far field region, and the wave front of the electromagnetic wave or sound wave evolves from a complex non-plane wave (i.e., a spherical wave) in the near field to an approximately plane wave in the far field when the electromagnetic wave or sound wave propagates from the radiation source to the Rayleigh distance. The Rayleigh distance can satisfy the relationship shown in the following formula (1):

[0112] (1)

[0113] wherein R represents the Rayleigh distance, represents the wavelength of the electromagnetic wave or sound wave, represents the maximum physical size of the radiation source.

[0114] Please refer to Figure 2 , Figure 2 for a scene position schematic diagram of the near field and the far field provided by the embodiments of the present application. Taking an antenna as an example, as shown in Figure 2 , the antenna can emit electromagnetic waves to a detection target (target) in the near field region, and can also emit electromagnetic waves to a detection target (target) in the far field region. Wherein, in the case that the antenna emits electromagnetic waves to the detection target in the far field region, the detection target can include multiple scattering points, and the echo signal reflected by the multiple scattering points of the detection target can return to the antenna after clustering (Cluster).

[0115] In an embodiment, whether the detection target is in the near-field region or the far-field region can be determined by the distance between the radiation source and the detection target and the Rayleigh distance. For example, if the distance between the radiation source and the detection target is less than or equal to the Rayleigh distance, the detection target is in the near-field region; if the distance between the radiation source and the detection target is greater than the Rayleigh distance, the detection target is in the far-field region.

[0116] In an actual ISAC communication scenario, a communication device can implement environment perception by transmitting a wireless signal and collecting and analyzing a wireless signal reflected, scattered and multipath propagated by a surrounding environment to obtain information such as a bearing, a distance or an angle of a detection target. However, the position of the detection target can change, for example, the detection target can move from a near-field detection range of the communication device to a far-field detection range of the communication device, or move from the far-field detection range of the communication device to the near-field detection range of the communication device. The current perception technology is difficult to avoid the perception error caused by the model mismatch due to the change of the position of the detection target, thereby affecting the perception performance.

[0117] To at least solve the above problems, an embodiment of the present application provides a communication method. In the communication method, a communication device can determine a first distance from the communication device to a detection target according to a received first signal, and determine a scattering cross-section area of the detection target according to a target detection mode adapted to the first distance. In this way, the communication device can perceive the detection target in a targeted manner, improve the accuracy of target perception, and further improve the perception performance of the communication device.

[0118] Hereinafter, the communication method provided by an embodiment of the present application will be described with reference to the accompanying drawings.

[0119] Please refer to Figure 3 , Figure 3 A flowchart of a communication method provided by an embodiment of the present application is shown in the figure. The communication method can be applied to a perception system as shown in Figure 1 The communication method includes the following steps as shown in Figure 3

[0120] S301, a communication device receives a first signal from a detection target.

[0121] The communication device can be the network device 10 shown in the foregoing Figure 1 , or can be a communication module, a circuit or chip responsible for a communication function, a chip system, or other components or assemblies. In some examples, the communication device can be a radar, that is, a detection end. An embodiment of the present application takes the communication device as a radar for example to describe.

[0122] ​The detection target can be various objects in the surrounding environment of the communication device, and the specific type can not be limited. In some examples, the detection target can be an object such as a car, a house, or an unmanned aerial vehicle (UAV).

[0123] In this embodiment, the first signal can be a positioning signal sent by the detection target or a reflected echo signal. In this way, the communication device can determine the distance (which can be referred to as a detection distance) between the detection target and the communication device based on multiple different types of signals, thereby improving the flexibility of the detection distance determination.

[0124] The positioning signal can be a global positioning system (GPS) signal sent by the detection target, and the echo signal can be a reflected echo signal of a detection signal (such as an electromagnetic wave or a sound wave) emitted by the communication device via the detection target.

[0125] In one possible implementation, the detection target and the communication device can communicate through a mobile network. In this case, the detection target can be configured with a positioning function module, such as a GPS positioning function module or other positioning function modules, so that the detection target can send the first signal to the communication device through the positioning function module.

[0126] In another possible implementation, the detection target and the communication device can communicate through wireless signals. In this case, the communication device can emit a detection signal (such as an electromagnetic wave or a sound wave), and the detection target can reflect (or scatter) the received detection signal to form an echo signal, so that the communication device can perceive the position, distance, and angle of the detection target according to the echo signal reflected (or scattered) by the detection target.

[0127] In addition, as an implementation, the first signal can be carried in an existing message or signaling, or can be carried in a separate message or signaling, and the specific transmission form can not be limited.

[0128] The first signal can be used to determine the first distance from the communication device to the detection target. Taking the echo signal of the electromagnetic wave or the sound wave reflected by the detection target as an example, when the communication device receives the echo signal of the electromagnetic wave or the sound wave reflected by the detection target, the communication device can calculate the first distance from the communication device to the detection target by analyzing the time difference of the echo signal.

[0129] The first distance represents the distance from the communication device to the detection target, and the first distance can be a constant greater than 0, and the specific value and unit can not be limited.

[0130] In summary, the first signal enables the communication device to learn the first distance from the communication device to the detection target.

[0131] At S302, the communication device determines a target detection mode according to the first distance.

[0132] In an embodiment of the present application, the target detection mode can be a near-field detection mode or a far-field detection mode.

[0133] In a possible implementation, the target detection mode can be determined according to the first distance, and the target detection mode corresponding to different ranges of the first distance can be different. Specifically, as an implementation, the communication device can compare the first distance with a first threshold, and determine a detection region where the detection target is located according to a comparison result, and then determine the target detection mode according to the detection region where the detection target is located. The detection region can include a near-field detection region and a far-field detection region, and the first threshold is a critical value at which the detection target is located at the boundary of the near-field detection region and the far-field detection region. The specific value of the first threshold can not be limited. In some examples, the first threshold can be wherein, represents the wavelength of the detection signal sent by the communication device, represents the size of the antenna array of the communication device. Optionally, and may be pre-configured or agreed by a protocol, and the specific source can not be limited.

[0134] Optionally, when the first distance is less than or equal to the first threshold, it indicates that the detection target is located in the near-field detection region, and at this time the target detection mode is the near-field detection mode; when the first distance is greater than the first threshold, it indicates that the detection target is located in the far-field detection region, and at this time the target detection mode is the far-field detection mode.

[0135] In summary, with the first distance and the first threshold, the communication device can accurately and conveniently determine the target detection mode for determining the scattering cross-section area of the detection target.

[0136] In addition, in order to further improve the accuracy of the determined target detection mode, before the communication device receives the first signal, there can be a plurality of judgment processes for judging whether the detection modes determined twice in succession are the same. The plurality of judgment processes are described below.

[0137] Please refer to Figure 4 , Figure 4 is a flowchart example provided by an embodiment of the present application for judging whether the detection modes determined twice in succession are the same. Before the communication device receives the first signal, as Figure 4As shown, the second signal can be received first, and then a second distance can be measured according to the second signal, and then the first detection mode can be determined according to the second distance. The first detection mode can be a near-field detection mode or a far-field detection mode. The second signal can be a positioning signal sent by the detection target or a reflected echo signal. The second distance can be determined in the same manner as the first distance, and thus will not be described herein. Optionally, the accuracy of the first distance can be greater than the accuracy of the second distance.

[0138] In the process of determining the first detection mode according to the second distance, as an implementation manner, the communication device can compare the second distance with the first threshold value, and determine the first detection mode to be the near-field detection mode or the far-field detection mode according to the comparison result. If the second distance is greater than the first threshold value, the first detection mode is the far-field detection mode, and the first detection mode at this time is the same as the aforementioned far-field detection mode. If the second distance is less than or equal to the first threshold value, the first detection mode is the near-field detection mode, and the first detection mode at this time is the same as the aforementioned near-field detection mode. It should be understood that the first detection mode is not adjacent to the aforementioned far-field detection mode, or the first detection mode is not adjacent to the aforementioned near-field detection mode. Therefore, in order to determine the accurate target detection mode, further judgment is still needed.

[0139] Further, the communication device can receive a third signal, measure a third distance according to the third signal, and then determine a second detection mode according to the third distance. The third signal can be a positioning signal sent by the detection target or a reflected echo signal. The third distance can be determined in the same manner as the second distance and the first distance. The second detection mode can be determined in the same manner as the first detection mode, and thus will not be described herein. Optionally, the accuracy of the third distance can be greater than the accuracy of the second distance, and the accuracy of the first distance can be greater than the accuracy of the third distance.

[0140] In this embodiment, the second detection mode and the first detection mode are two adjacent detection modes, and the second detection mode is the same as the first detection mode. For example, the second detection mode and the first detection mode can both be the near-field detection mode or the far-field detection mode. If the second detection mode is the same as the first detection mode, it means that the detection mode of the detection target is determined correctly. At this time, the second detection mode can be determined as the aforementioned target detection mode. The second detection mode can be the aforementioned near-field detection mode or the far-field detection mode. The third distance can be equivalent to the aforementioned first distance, and the third signal can be equivalent to the aforementioned first signal.

[0141] In addition, before obtaining two adjacent detection modes that are the same, there can be a detection mode that is different from the first detection mode. This will be described below.

[0142] As an implementation, the communication device can further receive a fourth signal before receiving the second signal or in the case that the second detection mode is different from the first detection mode, and then measure a fourth distance according to the fourth signal, and then determine the third detection mode according to the fourth distance. In this implementation, the third detection mode is adjacent to the first detection mode and different from the first detection mode. That is, in the case that the detection modes determined in two consecutive times are the same, the determined detection mode is taken as the final target detection mode, otherwise, the detection area where the detection target is located can be re-sensed by selecting a detection mode opposite to the detection mode determined in the first of the two consecutive times until the detection modes determined in two consecutive times are the same. The accuracy of the second distance is greater than the accuracy of the fourth distance.

[0143] For example, as shown in Table 1 below, the relationship between the first detection mode determined by the communication device according to the second distance, the second detection mode determined by the communication device according to the third distance, the third detection mode determined by the communication device according to the fourth distance, and the target detection mode is as follows:

[0144] Table 1

[0145]

[0146] As shown in Table 1, in the case that the first detection mode determined by the communication device according to the second distance is a far-field detection mode and the second detection mode determined by the communication device according to the third distance is also a far-field detection mode, at this time, since the second detection mode is adjacent to and the same as the first detection mode, the second detection mode (i.e., the far-field detection mode) can be determined as the target detection mode. In this case, before the first detection mode is determined according to the second distance, the third detection mode can also be determined according to the fourth distance, as shown in Table 1, at this time, the third detection mode is a near-field detection mode, which is different from the first detection mode (far-field detection mode).

[0147] In the case that the first detection mode determined by the communication device according to the second distance is a near-field detection mode and the second detection mode determined by the communication device according to the third distance is a far-field detection mode, at this time, since the second detection mode is adjacent to and different from the first detection mode, the third detection mode can be determined according to the fourth distance before the first detection mode is determined according to the second distance, at this time, the third detection mode is opposite to the first detection mode. As shown in Table 1, in the case that the first detection mode determined by the communication device according to the second distance is a near-field detection mode, the third detection mode is a far-field detection mode, which is opposite to the first detection mode. That is, in the case that the second detection mode is different from the first detection mode, a detection mode opposite to the first detection mode can also be selected to re-sense the detection area where the detection target is located (not shown in Table 1) until the second detection mode same as the first detection mode is obtained.

[0148] In this way, since the detection mode corresponding to the detection region where the detection target is located is confirmed multiple times, and the determined detection mode is taken as the target detection mode only when the detection modes of two adjacent times are the same, the problem of inaccurate determination of the target detection mode caused by repeated lateral movement of the detection target at the boundary between the near-field detection region and the far-field detection region can be avoided, and the accuracy of sensing the detection target can be improved, thereby further improving the sensing performance of the communication device.

[0149] In addition, the target detection mode can also be determined according to the comparison result of the second distance and the third distance or the second distance and the fourth distance. For example, if the second distance and the third distance are the same, the detection mode determined according to the second distance or the detection mode determined according to the third distance can be determined as the target detection mode. Optionally, at this time, the detection mode determined according to the second distance and the detection mode determined according to the third distance can be the same.

[0150] S303, the communication device determines the scattering cross section of the detection target according to the target detection mode.

[0151] The scattering cross section is a virtual “reflection area” equivalent to the electromagnetic scattering characteristics of the detection target, and can be used to measure the reflection ability of the detection target to the detection signal such as electromagnetic wave or acoustic wave. The smaller the scattering cross section, the smaller the reflection ability of the detection target to the detection signal such as electromagnetic wave or acoustic wave, and the smaller the strength of the echo signal corresponding to the detection signal. The larger the scattering cross section, the greater the reflection ability of the detection target to the detection signal such as electromagnetic wave or acoustic wave, and the greater the strength of the echo signal corresponding to the detection signal. By determining the scattering cross section, the sensing boundary of the detection target can be conveniently estimated.

[0152] In some examples, the scattering cross section of the detection target can be the radar cross section (RCS) of the detection target, and the unit of the scattering cross section can not be limited, for example, it can be square meters (m 2 ).

[0153] In the embodiment of the application, the target detection mode can be used to determine the scattering cross section of the detection target. The target detection mode is related to the first distance.

[0154] Before determining the scattering cross section of the detection target according to the target detection mode, the communication device can first transmit a detection signal and receive an echo signal of the detection signal. The detection signal can be an electromagnetic wave signal or an acoustic wave signal, and the specific type is not limited. By transmitting the detection signal and analyzing the received echo signal, the distance, direction, angle and other information of the detection target relative to the communication device can be obtained, and then the scattering cross section of the detection target can be obtained.

[0155] As an implementation, in a case that the first distance is less than or equal to the first threshold, the detection target is in the aforementioned near-field detection region, and the communication device can determine the scattering cross section of the detection target according to the near-field detection mode (i.e., the near-field detection mode).

[0156] In addition, in a case that the detection target is in the near-field detection region, since the detection target can be originally in the far-field detection region, and is forced to be in the near-field detection region due to the expansion of the near-field range caused by the increase of the wireless frequency, the scattering cross section of the detection target can still be determined according to the far-field detection mode. Compared with this solution, in a case that the detection target is in the near-field detection region, the communication device can directly determine the scattering cross section of the detection target according to the near-field detection mode instead of the far-field detection mode, so that the detection target can be perceived in a targeted manner, the accuracy of target perception is improved, and the perception performance of the communication device is improved.

[0157] In addition, in a case that the first distance is less than or equal to the first threshold, the scattering cross section can be related to a power compensation factor in the near-field range. The power compensation factor in the near-field range can be an approximate modification based on a spherical wave propagation amplitude empirical formula, which can be used to capture the influence of the spherical wave of the near-field detection region on the radar receiving power. In an implementation, the power compensation factor in the near-field range can be related to the antenna array size of the communication device, the wavelength of the detection signal transmitted by the communication device, and the aforementioned first distance.

[0158] As an example, the power compensation factor in the near-field range can satisfy the relationship shown in the following formula (2):

[0159] ; (2)

[0160] wherein, the power compensation factor in the near-field range is denoted as, the wavelength of the detection signal transmitted by the communication device is denoted as, the first distance is denoted as, the antenna array size of the communication device is denoted as.

[0161] In addition, the power compensation factor in the near-field range can be pre-configured or agreed by a protocol.

[0162] By introducing the power compensation factor in the near-field range in the near-field detection mode, the antenna array wavefront curvature compensation of the communication device can be considered in the process of determining the scattering cross section of the detection target, so that the power of the echo signal of the detection signal received by the communication device is compensated, and the accuracy of determining the scattering cross section of the detection target is improved.

[0163] In addition, in a case where the first distance is less than or equal to the first threshold, the radar cross section can also be related to at least one of the power of the echo signal of the probe signal received by the communication device, the power when the communication device transmits the probe signal, the transmit antenna gain of the communication device, the receive antenna gain of the communication device, the wavelength of the probe signal transmitted by the communication device, or the first distance, so that the radar cross section of the probe target in the near-field probe region can be accurately determined in combination with the at least one parameter.

[0164] As an example, the radar cross section at this time can satisfy the relationship shown in the following formula (3):

[0165] (3)

[0166] wherein, represents the power of the echo signal of the probe signal received by the communication device, represents the power when the communication device transmits the probe signal, represents the transmit antenna gain of the communication device, represents the receive antenna gain of the communication device, represents the wavelength of the probe signal transmitted by the communication device, represents the first distance, and RCS represents the radar cross section, represents the power compensation factor in the near-field range. In this way, since the communication device can determine the radar cross section of the probe target in the near-field probe region by using the probe mode adapted to the near-field probe region, the accuracy of determining the radar cross section can be improved, and the accuracy of the communication device sensing the probe target is also improved, thereby improving the sensing performance of the communication device.

[0167] In some examples, the power of the echo signal of the probe signal received by the communication device can be a radar receiving power, the power when the communication device transmits the probe signal can be a radar transmitting power, the transmit antenna gain of the communication device can be a radar transmit antenna gain, the receive antenna gain of the communication device can be a radar receive antenna gain, and the wavelength of the probe signal transmitted by the communication device can be a wavelength of a radar probe signal.

[0168] wherein at least one of the power of the echo signal of the probe signal received by the communication device, the power when the communication device transmits the probe signal, the transmit antenna gain of the communication device, the receive antenna gain of the communication device, the wavelength of the probe signal transmitted by the communication device, or the first distance can be pre-configured or agreed by a protocol, and the specific configuration can not be limited.

[0169] As another implementation, in a case where the first distance is greater than the first threshold, the probe target is in the aforementioned far-field probe region, and at this time the communication device can determine the radar cross section of the probe target according to the far-field probe mode.

[0170] In addition, in a case where the detection target is forced to be in the near-field detection area due to the near-field range being expanded as the wireless frequency increases, a technical solution is to determine the scattering cross section of the detection target according to the far-field detection mode. Compared with this solution, the present application determines the scattering cross section of the detection target according to the far-field detection mode only in a case where the detection target is actually in the far-field detection area, so that the detection target can be perceived in practice, the accuracy of target perception is improved, and the perception performance of the communication device is improved.

[0171] In addition, in a case where the first distance is greater than the first threshold, the scattering cross section can be related to at least one of the following parameters: the power of the echo signal of the detection signal received by the communication device, the power when the communication device transmits the detection signal, the transmit antenna gain of the communication device, the receive antenna gain of the communication device, the wavelength of the detection signal transmitted by the communication device, or the first distance. In this way, the scattering cross section of the detection target in the far-field detection area can be accurately determined in combination with the at least one parameter.

[0172] As an example, the scattering cross section at this time can satisfy the relationship shown in the following formula (4):

[0173] (4)

[0174] wherein, represents the power of the echo signal of the detection signal received by the communication device, represents the power when the communication device transmits the detection signal, represents the transmit antenna gain of the communication device, represents the receive antenna gain of the communication device, represents the wavelength of the detection signal transmitted by the communication device, represents the first distance mentioned above, and RCS represents the scattering cross section. In this way, since the communication device can determine the scattering cross section of the detection target in the far-field detection area by using the detection mode adapted to the far-field detection area, the accuracy of determining the scattering cross section can be improved, and the accuracy of the communication device in perceiving the detection target is improved, thereby improving the perception performance of the communication device.

[0175] In this way, since the detection area in which the detection target is located can be determined according to the comparison result of the first distance and the first threshold, the scattering cross section of the detection target can be determined by using the near-field detection mode when the detection target is in the near-field detection area, so that the calculation complexity can be saved; and the scattering cross section of the detection target can be determined by using the far-field detection mode when the detection target is in the far-field detection area, so that the perception accuracy can be improved.

[0176] In addition, the scattering cross section in the embodiment of the present application can also be related to a scattering cross section related to a near-field direct echo. Optionally, the scattering cross section related to the near-field direct echo can be pre-configured or agreed by a protocol.

[0177] In the case where the scattering cross section is related to the scattering cross section related to the near-field direct echo, the scattering cross section can also be related to at least one of the following parameters: an average scattering cross section, a tilt angle correction factor of the detection target, or a scattering cross section related to a far-field scattering echo. The average scattering cross section can be an average value of the scattering cross sections corresponding to at least one scattering point of the detection target. In this way, the influence of various parameters on the scattering cross section of the detection target in the near-field detection area can be considered in the process of determining the scattering cross section, thereby improving the accuracy of determining the scattering cross section.

[0178] As an example, the scattering cross section at this time can satisfy the relationship shown in the following formula (5):

[0179] ; (5)

[0180] wherein A represents the average scattering cross section, B1 represents the tilt angle correction factor of the detection target, B2 represents the scattering cross section related to the near-field direct echo, and C2 represents the scattering cross section related to the far-field scattering echo.

[0181] In addition, at least one of the parameters such as the average scattering cross section, the tilt angle correction factor of the detection target, or the scattering cross section related to the far-field scattering echo can be pre-configured or agreed by a protocol, and the specific configuration can not be limited.

[0182] The scattering cross section related to the near-field direct echo can be related to the first distance.

[0183] As an embodiment, the scattering cross section related to the near-field direct echo and the first distance can satisfy the relationship shown in the following formula (6):

[0184] ; (6)

[0185] wherein B2 represents the scattering cross section related to the near-field direct echo, represents the first distance, represents the reflection field intensity of the communication device, represents the incident field intensity at the detection target, represents a differential element in calculus. represents the reflection field intensity of the communication device as a function of the first distance, represents the incident field intensity at the detection target as a function of the first distance.

[0186] wherein, and may be pre-configured or agreed by a protocol, and specifically, no limitation can be made.

[0187] In the embodiments of the present application, the first distance can change with the movement of the detection target, and correspondingly, the scattering cross section related to the near-field direct echo can also change with the change of the first distance. In this way, by establishing the correlation between the scattering cross section of the detection target and the scattering cross section related to the near-field direct echo, the change of the scattering cross section in the near-field detection area can be considered in the process of determining the scattering cross section of the detection target, so that the scattering cross section of the detection target in the near-field detection area can be determined more accurately, thereby improving the accuracy of the communication device in perceiving the detection target, and further improving the perception performance of the communication device.

[0188] In addition, the numerical value of the scattering cross section can be used to reflect the distance between the communication device and the detection target. The smaller the scattering cross section, the closer the distance between the communication device and the detection target; the larger the scattering cross section, the farther the distance between the communication device and the detection target.

[0189] To sum up, by the communication method provided by the embodiments of the present application, the communication device can determine the first distance between the communication device and the detection target according to the received first signal, and then determine the scattering cross section of the detection target according to the target detection mode matched with the first distance. In this way, the communication device can match the target detection mode for determining the scattering cross section of the detection target according to the distance between the communication device and the detection target, improve the accuracy of target detection, and further improve the perception performance of the communication device.

[0190] In addition, in the embodiments of the present application, the scattering cross section of the detection target can also be related to the near-field direct echo, which occurs in the aforementioned near-field detection area. The scattering cross section in this case will be described below.

[0191] Please refer to Figure 5 , Figure 5 The flowchart of another communication method provided by the embodiments of the present application is shown in the figure. The communication method can be applied to the communication system as shown in Figure 1 . As shown in Figure 5 , the communication method comprises the following steps.

[0192] S501, the communication device receives a first signal from a detection target.

[0193] The specific implementation of S501 can refer to the related description of S301 described above, which will not be repeated here.

[0194] S502, the communication device determines the scattering cross section of the detection target.

[0195] The scattering cross section can be related to a near-field direct echo related scattering cross section.

[0196] Optionally, the near-field direct echo related scattering cross section can be preconfigured or agreed by a protocol.

[0197] In the case that the scattering cross section is related to the near-field direct echo related scattering cross section, the scattering cross section can also be related to at least one of the following parameters: an average scattering cross section, a tilt angle correction factor of the detection target, or a far-field scattering echo related scattering cross section. In this way, the influence of various parameters on the scattering cross section of the detection target in the near-field detection area can be considered in the process of determining the scattering cross section, and the accuracy of determining the scattering cross section can be improved.

[0198] As an example, the scattering cross section at this time can satisfy the relationship shown in the following formula (7):

[0199] ; (7)

[0200] Wherein, RCS represents the scattering cross section, A represents the average scattering cross section, B1 represents the tilt angle correction factor of the detection target, C1 represents the near-field direct echo related scattering cross section, and C2 represents the far-field scattering echo related scattering cross section.

[0201] In addition, at least one of the parameters such as the average scattering cross section, the tilt angle correction factor of the detection target, or the far-field scattering echo related scattering cross section can be preconfigured or agreed by a protocol, and the specific configuration can not be limited.

[0202] The near-field direct echo related scattering cross section can be related to the first distance.

[0203] As an embodiment, the near-field direct echo related scattering cross section and the first distance can satisfy the relationship shown in the following formula (8):

[0204] ; (8)

[0205] Wherein, C1 represents the near-field direct echo related scattering cross section, D represents the first distance, E represents the reflection field intensity of the communication device, F represents the incident field intensity at the detection target, G represents the differential element in calculus, H represents that the reflection field intensity of the communication device is a function related to the first distance, I represents that the incident field intensity at the detection target is a function related to the first distance. and It can be pre-configured or agreed upon by the protocol, and there is no specific limitation.

[0206] In an embodiment of the present application, the first distance can change as the detection target moves, and correspondingly, the scattering cross-sectional area associated with the near-field direct echo can also change as the first distance changes. In this way, by establishing an association between the scattering cross-sectional area of ​​the detection target and the scattering cross-sectional area associated with the near-field direct echo, it is possible to take into account the changes in the scattering cross-sectional area in the near-field detection area in the process of determining the scattering cross-sectional area of ​​the detection target, thereby more accurately determining the scattering cross-sectional area of ​​the detection target in the near-field detection area, thereby improving the accuracy of the communication device in perceiving the detection target, and further improving the perception performance of the communication device.

[0207] In this embodiment of the present application, the numerical value of the scattering cross-section can be used to reflect the distance between the communication device and the detection target. A smaller scattering cross-section indicates a closer distance to the detection target; a larger scattering cross-section indicates a farther distance to the detection target.

[0208] In addition, the communication method provided in the embodiment of the present application is not only applicable to ISAC communication scenarios, but can also be applied to V2X scenarios, or can be applied to other scenarios that require perception or detection of detection targets, without specific limitation.

[0209] In summary, through the communication method provided in the embodiment of the present application, an association can be established between the scattering cross-sectional area of ​​the detection target and the near-field direct echo, so that in the process of the communication device sensing the detection target, the characteristics of the detection target in the near-field range can be taken into account, thereby improving the performance of target detection.

[0210] Combined with the above Figures 3-5 , describes in detail the communication method provided by the embodiment of the present application. Figures 6-8 The communication device for executing the communication method provided in the embodiment of the present application is described in detail. It should be understood that the communication device of the embodiment of the present application can execute the various communication methods of the aforementioned embodiment of the present application, that is, the specific working process of the following various products can refer to the corresponding process in the aforementioned method embodiment.

[0211] In each of the above embodiments, the terminal device may perform some or all of the steps in each embodiment; the network device may perform some or all of the steps in each embodiment. These steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. In addition, the various steps may be performed in a different order as presented in the embodiments, and it is possible that not all of the operations in the embodiments of the present application need to be performed. Moreover, the size of the sequence number of each step does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0212] For example, see Figure 6 , Figure 6 This is a hardware structure diagram of a communication device provided in an embodiment of the present application. Figure 6 As shown, the communication device 600 includes: a processing module 601 and a transceiver module 602. For ease of description, Figure 6 Only the main components of the communication device are shown.

[0213] In some embodiments, the communication device 600 may be adapted to Figure 1 In the communication system shown in FIG, execution Figures 3-5 The functions of the communication device in the communication method shown in .

[0214] In this case, the transceiver module 602 is configured to receive a first signal, where the first signal is used to determine a first distance between the communication device and the detection target.

[0215] The transceiver module 602 is further configured to receive the second signal, the third signal, and the fourth signal.

[0216] The processing module 601 is configured to determine a target detection mode according to a first distance.

[0217] The processing module 601 is further configured to determine the scattering cross-section of the detected target according to the target detection mode.

[0218] The processing module 601 is further configured to obtain a second distance according to the second signal measurement; and determine the first detection mode according to the second distance.

[0219] The processing module 601 is further configured to obtain a third distance according to the third signal; determine a second detection mode according to the third distance, where the second detection mode is the same as the first detection mode; and determine the second detection mode as the target detection mode.

[0220] The processing module 601 is further configured to measure and obtain a fourth distance according to the fourth signal; and determine a third detection mode according to the fourth distance, where the third detection mode is different from the first detection mode.

[0221] Further, the processing module 601 can be further configured to determine a scattering cross section of the detection target, the scattering cross section being related to a near-field direct echo related scattering cross section, the near-field direct echo related scattering cross section being related to the first distance.

[0222] Optionally, the transceiver module 602 can include a receiving module and a transmitting module (not shown in Figure 6 ). The transceiver module is configured to implement the transmitting function and the receiving function of the communication apparatus 600.

[0223] Optionally, the communication apparatus 600 can further include a storage module (not shown in Figure 6 ), which stores a program or instructions. When the processing module 601 executes the program or instructions, the communication apparatus 600 can perform the functions of the communication device in the communication method shown in any one of Figures 3-5

[0224] It should be understood that the communication apparatus 600 can be a communication device, a communication module, a circuit or chip responsible for communication function, a chip system, or other components or assemblies. The communication module, the circuit or chip responsible for communication function, the chip system, or other components or assemblies can be applied to the communication device. The present application does not limit this.

[0225] In addition, the technical effects of the communication apparatus 600 can refer to the technical effects of the communication method shown in any one of Figures 3-5

[0226] It should be understood that the processing module 601 involved in the communication apparatus 600 can be realized by a processor or a processor-related circuit component, which can be a processor or a processing unit; the transceiver module 602 can be realized by a transceiver or a transceiver-related circuit component, which can be a transceiver or a transceiving unit.

[0227] Exemplarily, the embodiments of the present application further provide a communication apparatus.

[0228] Please refer to Figure 7 , Figure 7 for another hardware structure schematic diagram of the communication apparatus provided by the embodiments of the present application.

[0229] As shown in Figure 7 , the communication apparatus 700 includes a processor 701, and the processor 701 is coupled with a memory 702, the memory 702 is used to store computer programs or instructions and / or data, and the processor 701 is used to execute the computer programs or instructions and / or data stored in the memory 702, so that the methods in the foregoing method embodiments are executed.

[0230] Optionally, the processor 701 included in the communication apparatus 700 is one or more. ​​

[0231] Alternatively, as Figure 7 As shown, the communication device 700 may further include a memory 702 .

[0232] Optionally, the communication device 700 may include one or more memories 702 .

[0233] Optionally, the memory 702 may be integrated with the processor 701 or provided separately.

[0234] like Figure 7 As shown, the communication device 700 may further include a transceiver 703, which is used to receive and / or send signals. For example, the processor 701 is used to control the transceiver 703 to receive and / or send signals.

[0235] As a solution, the communication apparatus 700 is used to implement the operations performed by the communication device in the above method embodiments.

[0236] For example, the processor 701 is used to implement the processing-related operations performed by the communication device in the above method embodiment, and the transceiver 703 is used to implement the sending and receiving-related operations performed by the communication device in the above method embodiment.

[0237] above Figure 7 In the illustrated communication device, the device in transceiver 703 used for receiving power can be considered a receiving unit, and the device in transceiver 703 used for transmitting can be considered a transmitting unit. That is, transceiver 703 can include a receiver and a transmitter. Transceiver 703 can also be referred to as a transceiver, a transceiver unit, or a transceiver circuit. The receiver can also be referred to as a receiver, a receiving unit, a receiver, or a receiving circuit. The transmitter can also be referred to as a transmitter, a transmitter, a transmitting unit, or a transmitting circuit. The processor 701 has processing functionality and can be referred to as a processing unit. The memory 702 is used to store computer program code and data and can also be referred to as a storage unit.

[0238] Illustratively, an embodiment of the present application further provides a communication device.

[0239] See also Figure 8 , Figure 8 A schematic diagram of the hardware structure of another communication device provided in an embodiment of the present application.

[0240] like Figure 8 As shown, the communication apparatus 800 may be a communication device or a chip of a communication device. The communication apparatus 800 may be used to execute the operations executed by the communication device in the above method embodiment.

[0241] The communication apparatus 800 includes a 810 part, a 820 part, and a 830 part. The 810 part is mainly used for baseband processing, controlling a base station, etc. The 810 part is usually a control center of the base station, and can be referred to as a processor or a processing unit, which is used to control the communication device to perform the processing operations of the communication device in the above method embodiments. The 820 part is mainly used for storing computer program codes and data, and can be referred to as a memory or a storage unit. The 830 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals. The 830 part can be referred to as a transceiver unit, a transceiver, a transceiving circuit, or a transceiver, etc. The 830 part includes an antenna 833 and a radio frequency circuit (not shown in the figure), where the radio frequency circuit is mainly used for radio frequency processing.

[0242] Optionally, the devices in the 830 part used to implement the receiving function can be regarded as a receiver, and the devices used to implement the sending function can be regarded as a transmitter, that is, the 830 part includes a receiver 832 and a transmitter 831. The receiver can also be referred to as a receiving unit, a receiver, or a receiving circuit, etc. The transmitter can be referred to as a transmitting unit, a sending unit, a transmitter, or a transmitting circuit, etc.

[0243] The 810 part and the 820 part can include one or more single boards, and each single board can include one or more processors and one or more memories. The processors are used to read and execute the programs in the memories to implement the baseband processing functions and the control of the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing capability.

[0244] As an optional implementation, the multiple single boards can share one or more processors, or share one or more memories, or share one or more processors at the same time.

[0245] In an implementation, the transceiver unit of the 830 part is used to perform the transceiving related processes performed by the communication device in the embodiments shown in the above. Figures 3-5 The processor of the 810 part is used to perform the processing related processes performed by the communication device in the embodiments shown in the above. Figures 3-5 The processor of the 810 part is used to perform the processing related processes performed by the communication device in the embodiments shown in the above.

[0246] It should be understood that, Figure 8 The communication device including the processor, the memory, and the transceiver described above can not depend on the structure shown in the above. Figure 8 The communication device including the processor, the memory, and the transceiver described above can not depend on the structure shown in the above.

[0247] When the communication apparatus 800 is a chip, the chip includes a transceiver, a memory, and a processor. The transceiver can be an input / output circuit, a communication interface; the processor is an integrated processor or a microprocessor or an integrated circuit on the chip.

[0248] The sending operation of the communication device in the method embodiments can be understood as the output of the chip, and the receiving operation of the communication device in the method embodiments can be understood as the input of the chip.

[0249] Exemplarily, the embodiments of the present application further provide a computer readable storage medium, which stores the computer instructions for implementing the method executed by the communication device in the method embodiments.

[0250] For example, the computer program is executed by the computer, so that the computer can implement the method executed by the communication device in the method embodiments.

[0251] Exemplarily, the embodiments of the present application further provide a computer program product containing instructions, which are executed by the computer to make the computer implement the method executed by the communication device in the method embodiments.

[0252] Exemplarily, the embodiments of the present application further provide a communication system, which includes the communication device. The communication device is used to execute the process executed by the communication device in the foregoing embodiments.

[0253] Exemplarily, the embodiments of the present application further provide a chip device, which includes a processor, and is used to call the computer degree or computer instructions stored in the memory, so that the processor executes the method of the foregoing embodiments.

[0254] In a possible implementation manner, the input of the chip device corresponds to the receiving operation of the embodiments shown in the foregoing Figures 3-5 , and the output of the chip device corresponds to the sending operation of the embodiments shown in the foregoing Figures 3-5 .

[0255] Optionally, the processor is coupled with the memory through an interface.

[0256] Optionally, the chip device further includes a memory, and the memory stores the computer degree or computer instructions.

[0257] The processor mentioned in any of the foregoing embodiments can be a general central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the program execution of the method of the foregoing embodiments. The memory mentioned in any of the foregoing embodiments can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0258] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the explanation and beneficial effects of the above-mentioned related content in any one of the communication devices can refer to the corresponding method embodiments provided in the foregoing, which will not be repeated here.

[0259] In the embodiments of the present application, the communication device can include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer can include a central processing unit (CPU), a memory management unit (MMU), and a memory (also known as main memory), etc. The operating system of the operating system layer can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system, etc. The application layer can include browsers, address books, word processing software, instant messaging software, etc.

[0260] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0261] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0262] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e. they can be located in one place or distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0263] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0264] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the part of the technical solutions of the embodiments of the present application that essentially make contributions or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the processes of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and various media that can store program codes.

[0265] The above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method characterized by comprising: The method is applied to a communication device, and comprises: receiving a first signal, the first signal being used to determine a first distance from the communication device to a probing target; determining a target probing mode according to the first distance; determining a scattering cross section area of the probing target according to the target probing mode, in a case where the target probing mode is a near-field probing mode, the scattering cross section area being related to a power compensation factor within a near-field range, the power compensation factor within the near-field range being related to an antenna array size of the communication device, a wavelength of a probing signal, and the first distance; in a case where the target probing mode is a far-field probing mode, the scattering cross section area being related to at least one of the following parameters: a power of a return signal of the probing signal received by the communication device, a power when the communication device transmits the probing signal, a transmitting antenna gain of the communication device, a receiving antenna gain of the communication device, the wavelength of the probing signal, or the first distance.

2. The method of claim 1, wherein, The determining of the target probing mode according to the first distance comprises: in a case where the first distance is less than or equal to a first threshold value, the target probing mode is the near-field probing mode; in a case where the first distance is greater than the first threshold value, the target probing mode is the far-field probing mode.

3. The method of claim 2, wherein, Before the determining of the scattering cross section area of the probing target according to the target probing mode, the method further comprises: transmitting a probing signal; receiving a return signal of the probing signal.

4. The method of claim 1, wherein, The power compensation factor within the near-field range satisfies the following relationship: ； wherein the represents a power compensation factor in the near field range, the represents a wavelength of the probe signal, the represents the first distance, the represents an antenna array size of the communication device.

5. The method according to claim 1 or 4, characterized in that, in a case where the first distance is less than or equal to a first threshold value, the scattering cross section area is further related to at least one of the following parameters: the power of the return signal of the probing signal received by the communication device, the power when the communication device transmits the probing signal, the transmitting antenna gain of the communication device, the receiving antenna gain of the communication device, or the first distance.

6. The method of claim 5, wherein, The scattering cross section area satisfies the following relationship: ； wherein the represents a power of a return signal of the communication device receiving the probe signal, the represents a power of the communication device transmitting the probe signal, the represents a transmit antenna gain of the communication device, the represents a receive antenna gain of the communication device, the represents a wavelength of the probe signal, the represents the first distance, the represents the scattering cross section, the represents a power compensation factor within the near field range.

7. The method of claim 1, wherein, in a case where the target probing mode is the far-field probing mode, the scattering cross section area satisfies the following relationship: ； wherein the represents a power of a return signal of the communication device receiving a probe signal, the represents a power of the communication device transmitting the probe signal, the represents a transmitting antenna gain of the communication device, the represents a receiving antenna gain of the communication device, the represents a wavelength of the probe signal, the represents the first distance, the represents the scattering cross section.

8. The method of claim 1, wherein, The method further comprises: receiving a second signal; measuring a second distance according to the second signal; determining a first probing mode according to the second distance; receiving a third signal; measuring a third distance according to the third signal; determining a second probing mode according to the third distance; if the second probing mode is the same as the first probing mode, determining the second probing mode as the target probing mode.

9. The method of claim 8, wherein, Before the receiving of the second signal, the method further comprises: receiving a fourth signal; measuring a fourth distance according to the fourth signal; determining a third probing mode according to the fourth distance, the third probing mode being different from the first probing mode.

10. The method of claim 9, wherein, The first signal is a positioning signal transmitted by the probing target or a reflected return signal.

11. The method of claim 1, wherein, The scattering cross section area is related to a near-field direct return related scattering cross section area, the near-field direct return related scattering cross section area being related to the first distance.

12. The method of claim 11, wherein, The scattering cross section is further related to at least one of: an average scattering cross section, a tilt angle correction factor of the probe target, or a far field backscatter related scattering cross section.

13. The method of claim 12, wherein, The scattering cross section satisfies the following relationship: ； wherein the represents the scattering cross section area, A represents the average scattering cross section area, B1 represents a tilt angle correction factor of the probe target, and represents the scattering cross section area related to the near field direct echo, and C2 represents the scattering cross section area related to the far field scattering echo.

14. The method of claim 13, wherein, The near field direct backscatter related scattering cross section satisfies the following relationship with the first distance: ； wherein the denotes the backscatter cross section related to the near field direct echo, the denotes the first distance, the denotes the reflection field strength of the communication device, the denotes the incident field strength at the probe object, the denotes that the reflection field strength of the communication device is a function of the first distance, the denotes that the incident field strength at the probe object is a function of the first distance, the denotes a differential element in calculus.

15. A communications device, characterized by Comprising: A module for performing the method of any of claims 1-14.

16. A communication system, characterized by Comprising: A communication device for performing the method of any of claims 1-14.

17. A communications device, characterized by Comprising: At least one processor and interface circuitry for receiving signals from and transmitting signals to other communication devices outside the communication device, the processor being configured to implement a method as claimed in any of claims 1-14 by logic circuitry or by executing software code instructions.

18. A computer-readable storage medium, characterized in that, A computer program or instructions for causing a computer to perform the method of any of claims 1-14 when said computer program or instructions are run on the computer.

19. A chip, characterized by Comprising: Interface circuitry and logic circuitry, the interface circuitry being configured to receive signals from and transmit signals to other chips outside the chip, the logic circuitry being configured to implement a method as claimed in any of claims 1-14.

20. A computer program product, characterised in that, The computer program product comprises: computer program or instructions for causing a computer to perform the method of any of claims 1-14 when said computer program or instructions are run on the computer.

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