Perception method, device and system

Abstract

The invention provides a sensing method, device and system, and is applied to the technical field of communication. The sensing method provided by the invention comprises the following steps: a second communication device receives waveform information of a first signal and an echo signal of the first signal; the second communication device determines a first cross-correlation function from the first signal and an echo signal of the first signal. And the second communication device determines that the first fuzzy function needs to be suppressed according to the first cross-correlation function. The second communication device sends first indication information to the first communication device, the first indication information is used for determining a second fuzzy function, and the second fuzzy function has local amplitude suppression relative to the first fuzzy function. The second communication device receives an echo signal of the second signal. Based on the method, if the receiver judges that the fuzzy function of the sensing signal needs to be suppressed, the indication information is sent to the transmitter, so that the transmitter can determine the suppressed fuzzy function according to the indication information and correspondingly adjust the sensing signal, thereby improving the sensing performance of the sensing signal.

Description

Perception method, device and system Technical Field

[0001] The present application relates to the field of communication technologies, and in particular to perception methods, devices, and systems. Background Art

[0002] Typical perception applications include ranging, speed, angle measurement, positioning, tracking, and identification. Most of these applications rely on measuring the time delay, Doppler frequency, or angle of the signal from the transmitter to the target object and then from the target object to the receiver. Therefore, in current perception applications, the ambiguity function of the measured signal (or perceived signal) can be used to perceive the target object. In other words, the ambiguity function of a waveform affects the perception performance of that waveform as a perception signal.

[0003] Specifically, the sidelobe level of the ambiguity function is an important dimension for measuring waveform perception performance. For example, in a weak target detection scenario, if the sidelobe level of the ambiguity function of the measured signal is too high, it can easily cause significant interference in the sidelobe area where the signal reflected from the weak target is located, resulting in the weak target not being detected.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a perception method, device, and system for solving the problem in perception applications where, due to the high sidelobe level of the ambiguity function of the perception signal, interference within the sidelobe range cannot be effectively suppressed.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a sensing method is provided. The method can be performed by a second communication device, or by a component of the second communication device (e.g., a processor, chip, or chip system), or by a logic module or software capable of implementing all or part of the functions of the second communication device. The following description uses the second communication device performing the method as an example. The method includes: the second communication device receives waveform information of a first signal and an echo signal of the first signal, where the first signal is the Nth signal sent by the first communication device, where N is a positive integer greater than or equal to 1. The second communication device determines the first signal based on the waveform information of the first signal. The second communication device determines a first cross-correlation function based on the first signal and the echo signal of the first signal, where the first cross-correlation function is calculated by calculating the cross-correlation value between a signal obtained by performing at least one of time delay, Doppler frequency shift, and angle shift on the first signal and the echo signal of the first signal. The second communication device determines, based on the first cross-correlation function, that a first ambiguity function needs to be suppressed, where the first ambiguity function is the ambiguity function of the first signal. The second communication device sends first indication information to the first communication device, where the first indication information is used to determine a second ambiguity function, where the second ambiguity function has local amplitude suppression relative to the first ambiguity function. The second communication device receives an echo signal of a second signal, where the second signal is the Mth signal sent by the first communication device, and the ambiguity function of the second signal is a second ambiguity function, where M is equal to N+1.

[0008] Based on the perception method provided in the embodiment of the present application, after the second communication device receives the echo signal of the first signal, if it is determined based on the cross-correlation function of the first signal and the echo signal that the ambiguity function of the first signal needs to be suppressed, then a first indication information can be sent to the first communication device, so that the first communication device can determine the second ambiguity function obtained after suppressing the first ambiguity function based on the first indication information, thereby further determining the corresponding second signal. After the first communication device determines the second signal, it sends the second signal. Correspondingly, after the second communication device receives the echo signal of the second signal, because the second ambiguity function is a ambiguity function that suppresses the local area that needs to be suppressed in the previous first ambiguity function, the second ambiguity function helps to reduce the interference existing in the original local area, better matches the perception scene, and improves the weak target detection capability or the ability to suppress active interference.

[0009] In conjunction with the first aspect above, in one possible design, the first indication information includes location information for suppressing the first fuzzy function. Based on this solution, the second communication device can provide feedback to the first communication device regarding the location information for suppressing the first fuzzy function, thereby enabling the first communication device to determine the location in the first fuzzy function that needs to be suppressed based on the location information.

[0010] In conjunction with the first aspect described above, in one possible design, the first indication information includes position information and amplitude information for suppressing the first ambiguity function, where the position information corresponds to the amplitude information. Based on this solution, the second communication device can provide feedback to the first communication device on the position information for suppressing the first ambiguity function and the amplitude information corresponding to the position information, thereby enabling the first communication device to determine, based on the position information and the amplitude information, the position in the first ambiguity function to be suppressed and the amplitude corresponding to the position to be suppressed.

[0011] In conjunction with the first aspect, in one possible design, the position information includes at least one coordinate point and / or at least one coordinate range within the domain of the first fuzzy function. Based on this solution, the coordinate point or coordinate range of the first fuzzy function can be used to provide feedback on the position to be suppressed within the first fuzzy function.

[0012] In combination with the above first aspect, in a possible design, the coordinate point is determined by at least one of a time delay value, a Doppler frequency value, and an angle value.

[0013] In combination with the above first aspect, in a possible design, the coordinate range is determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

[0014] In conjunction with the first aspect described above, in one possible design, the amplitude information includes the amplitude value of the second ambiguity function at the corresponding position, the peak sidelobe ratio value of the second ambiguity function at the corresponding position, or the integrated sidelobe ratio value of the second ambiguity function at the corresponding position. Based on this solution, by indicating the amplitude value, peak sidelobe ratio value, or integrated sidelobe ratio value of the second ambiguity function at the corresponding position, the first communication device can determine the amplitude value, peak sidelobe ratio value, or integrated sidelobe ratio value that should correspond to suppressing the corresponding position in the first ambiguity function, thereby determining the amplitude information that needs to be used to suppress the first ambiguity function.

[0015] In conjunction with the first aspect described above, in one possible design, the amplitude information includes an attenuation value of the amplitude of the second ambiguity function at a corresponding location compared to the first ambiguity function or the third ambiguity function; wherein the third ambiguity function is the ambiguity function of the first signal transmitted by the first communication device. Based on this solution, by indicating the amplitude attenuation value of the second ambiguity function compared to the first ambiguity function or the third ambiguity function corresponding to the initially transmitted signal, the first communication device can directly determine the amplitude value that needs to be suppressed at the corresponding location in the first or third ambiguity function.

[0016] In conjunction with the first aspect described above, in one possible design, the first indication information includes waveform parameters, a waveform index, or a waveform sequence of the second signal, where the waveform index corresponds to a waveform corresponding to the second signal in a waveform set, and the waveform set is configured in the first communication device and the second communication device. Based on this solution, by indicating the waveform parameters, waveform index, or waveform sequence of the second signal, the first communication device can determine the second signal corresponding to the second ambiguity function.

[0017] In a second aspect, a perception method is provided. The method can be performed by a first communication device, or by a component of the first communication device (e.g., a processor, chip, or chip system), or by a logic module or software that implements all or part of the functions of the first communication device. The following description uses the first communication device performing the method as an example. The method includes: the first communication device transmits a first signal and waveform information of the first signal, wherein the first signal is the Nth signal transmitted by the first communication device, and the ambiguity function of the first signal is the first ambiguity function; where N is a positive integer greater than or equal to 1. The first communication device receives first indication information transmitted by a second communication device, the first indication information being used to determine a second ambiguity function, wherein the second ambiguity function has local amplitude suppression relative to the first ambiguity function. The first communication device determines a second signal based on the first indication information, wherein the ambiguity function of the second signal is the second ambiguity function. The first communication device transmits a second signal; the second signal is the Mth signal transmitted by the first communication device, where M is equal to N+1.

[0018] Based on the perception method provided in the embodiment of the present application, after the second communication device receives the echo signal of the first signal, if it is determined based on the cross-correlation function of the first signal and the echo signal that the ambiguity function of the first signal needs to be suppressed, then a first indication information can be sent to the first communication device, so that the first communication device can determine the second ambiguity function obtained after suppressing the first ambiguity function based on the first indication information, thereby further determining the corresponding second signal. After the first communication device determines the second signal, it sends the second signal. Correspondingly, after the second communication device receives the echo signal of the second signal, because the second ambiguity function is a ambiguity function that suppresses the local area that needs to be suppressed in the previous first ambiguity function, the second ambiguity function helps to reduce the interference existing in the original local area, better matches the perception scene, and improves the weak target detection capability or the ability to suppress active interference.

[0019] In conjunction with the second aspect, in one possible design, the first indication information includes location information for suppressing the first fuzzy function. Based on this solution, the second communication device can provide feedback to the first communication device regarding the location information for suppressing the first fuzzy function, thereby enabling the first communication device to determine the location in the first fuzzy function that needs to be suppressed based on the location information.

[0020] In conjunction with the second aspect described above, in one possible design, the first indication information includes position information and amplitude information for suppressing the first ambiguity function, where the position information corresponds to the amplitude information. Based on this solution, the second communication device can provide feedback to the first communication device on the position information for suppressing the first ambiguity function and the amplitude information corresponding to the position information, thereby enabling the first communication device to determine, based on the position information and the amplitude information, the position in the first ambiguity function to be suppressed and the amplitude corresponding to the position to be suppressed.

[0021] In conjunction with the second aspect, in one possible design, the position information includes at least one coordinate point and / or at least one coordinate range within the domain of the first fuzzy function. Based on this solution, the coordinate point or coordinate range of the first fuzzy function can be used to provide feedback on the position to be suppressed within the first fuzzy function.

[0022] In combination with the above second aspect, in a possible design, the coordinate point is determined by at least one of a time delay value, a Doppler frequency value, and an angle value.

[0023] In combination with the above second aspect, in a possible design, the coordinate range is determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

[0024] In conjunction with the second aspect described above, in one possible design, the amplitude information includes the amplitude value of the second ambiguity function at the corresponding position, the peak sidelobe ratio value of the second ambiguity function at the corresponding position, or the integrated sidelobe ratio value of the second ambiguity function at the corresponding position. Based on this solution, by indicating the amplitude value, peak sidelobe ratio value, or integrated sidelobe ratio value of the second ambiguity function at the corresponding position, the first communication device can determine the amplitude value, peak sidelobe ratio value, or integrated sidelobe ratio value that should correspond to suppressing the corresponding position in the first ambiguity function, thereby determining the amplitude information that needs to be used to suppress the first ambiguity function.

[0025] In conjunction with the second aspect described above, in one possible design, the amplitude information includes an attenuation value of the amplitude of the second ambiguity function at a corresponding location compared to the first ambiguity function or the third ambiguity function; wherein the third ambiguity function is the ambiguity function of the first signal transmitted by the first communication device. Based on this solution, by indicating the amplitude attenuation value of the second ambiguity function compared to the first ambiguity function or the third ambiguity function corresponding to the initially transmitted signal, the first communication device can directly determine the amplitude value that needs to be suppressed at the corresponding location in the first or third ambiguity function.

[0026] In conjunction with the second aspect described above, in one possible design, the first indication information includes waveform parameters, a waveform index, or a waveform sequence of the second signal, where the waveform index corresponds to a waveform corresponding to the second signal in a waveform set, and the waveform set is configured in the first communication device and the second communication device. Based on this solution, by indicating the waveform parameters, waveform index, or waveform sequence of the second signal, the first communication device can determine the second signal corresponding to the second ambiguity function.

[0027] In a third aspect, a communication device is provided for implementing the various methods described above. The communication device may be the second communication device described in the first aspect, or a device including the second communication device, or a device included in the second communication device, such as a chip; or the communication device may be the first communication device described in the second aspect, or a device including the first communication device, or a device included in the first communication device.

[0028] The communication device includes modules, units, or means corresponding to the above-mentioned method, which can be implemented by hardware, software, or hardware executing corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

[0029] In a fourth aspect, a communication device is provided, comprising: a processor configured to execute instructions stored in a memory, wherein when the processor executes the instructions, the communication device performs the method described in any of the above aspects. The communication device may be the second communication device described in the first aspect, or a device including the second communication device, or a device included in the second communication device, such as a chip; or the communication device may be the first communication device described in the second aspect, or a device including the first communication device, or a device included in the first communication device.

[0030] In one possible design, the communication device further includes a memory for storing computer instructions. Optionally, the processor and the memory are integrated together, or the processor and the memory are separately provided.

[0031] In one possible design, the memory is coupled to the processor and is external to the communication device.

[0032] In a fifth aspect, a communication device is provided, comprising: a processor and an interface circuit, the interface circuit being configured to communicate with a module external to the communication device; the processor being configured to execute the method described in any of the above aspects via a logic circuit or by running a computer program or instructions. The communication device may be the second communication device described in the first aspect, or a device including the second communication device, or a device, such as a chip, included in the second communication device; or the communication device may be the first communication device described in the second aspect, or a device including the first communication device, or a device included in the first communication device.

[0033] Alternatively, the interface circuit can be a code / data read / write interface circuit, which is used to receive computer execution instructions (the computer execution instructions are stored in the memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor so that the processor runs the computer execution instructions to execute the method described in any of the above aspects.

[0034] In some possible designs, the communication device may be a chip or a chip system.

[0035] In a sixth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions that, when executed on a communication device, enable the communication device to perform the method described in any of the above aspects. The communication device may be the second communication device described in the first aspect, or a device including the second communication device, or a device included in the second communication device, such as a chip; or the communication device may be the first communication device described in the second aspect, or a device including the first communication device, or a device included in the first communication device.

[0036] In a seventh aspect, a computer program product comprising instructions is provided. When executed on a communication device, the computer program product enables the communication device to perform the method described in any of the above aspects. The communication device may be the second communication device described in the first aspect, or a device comprising the second communication device, or a device, such as a chip, included in the second communication device; or the communication device may be the first communication device described in the second aspect, or a device comprising the first communication device, or a device included in the first communication device.

[0037] In an eighth aspect, a communication device (for example, the communication device may be a chip or a chip system) is provided, wherein the communication device includes a processor for implementing the functions involved in any of the above aspects. In one possible design, the communication device also includes a memory for storing necessary program instructions and data. When the communication device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0038] Among them, the technical effects brought about by any design method in the third to eighth aspects can refer to the technical effects brought about by the different design methods in the above-mentioned first to second aspects, and will not be repeated here.

[0039] In a ninth aspect, a communication system is provided, comprising a first communication device and a second communication device. The second communication device is configured to execute the method described in the first aspect; and the first communication device is configured to execute the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a schematic diagram of a main lobe and side lobes of a response function provided in an embodiment of the present application;

[0041] FIG2 is a schematic diagram of a cross-correlation function in a passive target measurement scenario provided by an embodiment of the present application;

[0042] FIG3 is a schematic diagram of an ambiguity function of an FMCW waveform and an ambiguity function of an OFDM waveform provided in an embodiment of the present application;

[0043] FIG4 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0044] FIG5 is a schematic diagram of an application scenario provided by an embodiment of the present application;

[0045] FIG6 is a schematic diagram of another application scenario provided by an embodiment of the present application;

[0046] FIG7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0047] FIG8 is an interactive diagram of a perception method provided in an embodiment of the present application;

[0048] FIG9 is a schematic diagram of a suppressed fuzzy function provided in an embodiment of the present application;

[0049] FIG10 is a schematic diagram of a second cross-correlation function provided in an embodiment of the present application;

[0050] FIG11 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction to the relevant technologies involved in the present application is first given as follows.

[0052] 1. Main lobe:

[0053] The amplitude spectra of some response functions are in the shape of petals, such as the autocorrelation function of certain waveforms, the radiation pattern of array antennas, etc. Among them, the lobe with the largest amplitude of the response function is called the main lobe, and the remaining lobes are called side lobes. For example, Figure 1 is an image of the response function A(τ), where τ is a parameter, |A(τ)| is the amplitude of the response function, and the main lobe of the response function is shown in Figure 1. A commonly used main lobe width is defined as the half-power main lobe width, that is, the main lobe width corresponding to the power corresponding to the value of the response function drops from the peak to half of the peak, also called the 3dB main lobe width. For example, in the response function A(τ) shown in Figure 1, the half-power main lobe width is such as W 3dB Another commonly used definition of the main lobe width is the zero-point main lobe width, that is, the main lobe width between the positions corresponding to the first local minima on both sides of the main lobe. For example, in the response function A(τ) shown in Figure 1, the zero-point main lobe width is shown as W0.

[0054] Currently, when waveforms are used for perception, such as in perception applications such as distance measurement, speed measurement, and angle measurement, the main lobe width of the waveform's autocorrelation function is proportional to the resolution and accuracy of the measurement. Therefore, the main lobe level is one of the dimensions for measuring waveform perception performance. The widening of the main lobe will deteriorate the resolution and accuracy of the waveform when used for perception.

[0055] 2. Side lobes:

[0056] In the amplitude spectrum of the response function, all lobes except the main lobe are called side lobes. According to their position, the side lobes can be numbered as the first side lobe, the second side lobe, and so on. In many applications, the height of the side lobe is a key indicator that affects the performance of the system. There are two commonly used indicators to measure the height of the side lobe: peak side lobe ratio (PSLR) and integrated side lobe ratio (ISLR). Among them, PSLR is defined as the ratio of the power corresponding to the peak of the response function to the power corresponding to the peak of the side lobe of the response function, and ISLR is defined as the ratio of the power contained in the main lobe of the response function to the power contained in the side lobe of the response function. For example, in the response function A(τ) shown in Figure 1, the PSLR is shown in Figure 1.

[0057] 3. Related operations:

[0058] Correlation operation refers to multiplying and adding the values ​​of the corresponding coordinate points of two functions.

[0059] 1) Autocorrelation:

[0060] If two functions are the same, then the correlation operation between them is called autocorrelation, and the function obtained by the correlation operation is called the autocorrelation function.

[0061] 2) Cross-correlation:

[0062] If two functions are different, then the correlation operation between them is called cross-correlation, and the function obtained by the correlation operation is called the cross-correlation function.

[0063] 4. Fuzzy function

[0064] In pulse radar and sonar signal processing scenarios, the ambiguity function is generally the autocorrelation function of a signal with respect to dimensions such as time delay, Doppler frequency, or angle. It characterizes the response function of the echo signal reflected by the moving target after the signal reaches the moving target and passes through the matched filter. In typical perception applications, such as ranging, speed measurement, angle measurement, positioning, tracking, or identification, most perception applications rely on measuring the time delay, Doppler frequency, or angle of the signal from the transmitter to the target object and then from the target object to the receiver. Therefore, in current perception applications, the ambiguity function of the measured signal (or perception signal) can be used to perceive the target object. In other words, the ambiguity function of the waveform affects the perception performance of the waveform when used as a perception signal.

[0065] Specifically, in addition to the impact of mainlobe level on waveform perception performance described above, the sidelobe level of the ambiguity function is also a dimension of waveform perception performance. In weak target detection scenarios, low sidelobes help reduce the interference caused by strong signals in the sidelobe region, thereby improving target detection capabilities within the sidelobe region. Correspondingly, in interference suppression scenarios, constructing low sidelobe regions can effectively suppress interference.

[0066] The following is an example of a passive target measurement scenario, where a passive target refers to a target that does not emit a signal. In this scenario, after the transmitter transmits the measurement signal, the signal of the line of sight (LOS) between the transmitter and the receiver is much stronger than the echo signal reflected by the target, so that the peak value of the matched filter output of the echo signal is lower than the sidelobe value of the matched filter output of the LOS path signal. In other words, the main lobe value of the ambiguity function of the echo signal is lower than the sidelobe value of the ambiguity function of the LOS path signal. In the following, the strong signal caused by the LOS path is referred to as a strong signal, and the echo signal reflected by the target is referred to as a weak signal. Figure 2 is a function image obtained by the receiver receiving and processing the signal after the transmitter transmits the measurement signal in this scenario. The horizontal axis coordinate is the time delay τ, in seconds, and the vertical axis coordinate is the cross correlation value, in dB. In Figure 2, the curve with relatively thin lines is the cross correlation function between the strong signal caused by the LOS path and the measurement signal, and the curve with relatively thick lines is the cross correlation function between the echo signal reflected by the target and the measurement signal. These two cross-correlation functions are the ambiguity functions of the measurement signal after different time domain shifts and amplitude scaling. It can be understood that the combination of these two cross-correlation functions is the cross-correlation function between the measurement signal and its echo signal. As shown in Figure 2, the high sidelobe level of the strong signal almost drowns out the mainlobe of the weak signal, causing significant interference in the time delay region where the weak signal resides, making the target undetectable.

[0067] Currently, waveforms with inherently low sidelobe levels are often used to reduce interference within the sidelobe region. For example, Figure 3 shows the ambiguity function of a frequency modulated continuous wave (FMCW) waveform and the ambiguity function of an orthogonal frequency division multiplexing (OFDM) waveform. The horizontal axis represents the time delay τ, and the vertical axis represents the autocorrelation. As shown in Figure 3, the sidelobes of the FMCW waveform are significantly lower than those of the OFDM waveform. Therefore, it can be expected that in the scenario of time delay measurement, using an FMCW waveform to perceive a target can better suppress interference within the sidelobe region.

[0068] Furthermore, currently, a method of windowing the waveform can be used to reduce interference in the sidelobe region. However, while windowing can reduce the sidelobe level, it also causes the mainlobe to widen, resulting in a loss of resolution and accuracy.

[0069] Based on the above problems, an embodiment of the present application proposes a perception method that can effectively suppress the local amplitude of the ambiguity function of the signal without widening the main lobe level of the ambiguity function, thereby suppressing interference in the sidelobe area and improving perception performance.

[0070] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. In the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B. The "and / or" in the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, a and b and c, where a, b, c can be single or multiple.

[0071] In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0072] The technical solutions of the embodiments of the present application can be used in various communication systems, which may be a 3rd Generation Partnership Project (3GPP) communication system, such as a long term evolution (LTE) system, a fifth generation (5G) communication system, a vehicle to everything (V2X) system, or a device to device (D2D) communication system, a machine to machine (M2M) communication system, an Internet of Things (IoT), or other similar new systems for the future, such as a sixth generation (6G) system. The communication system may also be a non-3GPP communication system, such as a wireless local area network (WLAN) system such as Wi-Fi, without limitation.

[0073] The technical solutions of the embodiments of the present application can be applied to various communication scenarios, for example, can be applied to one or more of the following communication scenarios: smart home, D2D, V2X, and IoT communication scenarios.

[0074] Among them, the above-mentioned communication systems and communication scenarios applicable to the present application are only examples. The communication systems and communication scenarios applicable to the present application are not limited to these. They are uniformly described here and will not be repeated below.

[0075] The communication system provided by the present application is described below with reference to the accompanying drawings. Referring to FIG4 , a communication system 40 provided in an embodiment of the present application includes a first communication device 401 and a second communication device 402 .

[0076] It should be noted that the communication system 40 shown in FIG4 is merely an example for reference. The present embodiment of the application does not limit the number of first communication devices 401 and / or second communication devices 402 included in the communication system 40. The communication system 40 may include multiple first communication devices 401 and / or second communication devices 402. Alternatively, in the communication system 40 of the embodiment of the present application, the first communication device 401 and the second communication device 402 may be the same communication device.

[0077] Optionally, the first communication device 401 and the second communication device 402 may be different types of devices, for example, one of the first communication device 401 and the second communication device 402 is a network device and the other is a terminal device. Alternatively, the first communication device 401 and the second communication device 402 may be the same type of device, for example, both the first communication device 401 and the second communication device 402 are terminal devices, or both the first communication device 401 and the second communication device 402 are network devices, which is not specifically limited in this embodiment of the present application.

[0078] Taking the interaction between first communication device 401 and second communication device 402 shown in Figure 4 as an example, in this application, the second communication device receives waveform information of a first signal and an echo signal of the first signal. The first signal is the Nth signal sent by the first communication device, where N is a positive integer greater than or equal to 1. The second communication device then determines the first signal based on the waveform information of the first signal. The second communication device determines a first cross-correlation function based on the first signal and the echo signal of the first signal. The first cross-correlation function is calculated by calculating the cross-correlation value between a signal obtained by performing at least one of time delay, Doppler shift, and angle shift on the first signal and the echo signal of the first signal. Based on the first cross-correlation function, the second communication device determines that a first ambiguity function needs to be suppressed. The first ambiguity function is the ambiguity function of the first signal. The second communication device sends first indication information to the first communication device. The first indication information is used to determine a second ambiguity function. The second ambiguity function has local amplitude suppression relative to the first ambiguity function. The second communication device receives the echo signal of the second signal. The second signal is the Mth signal sent by the first communication device. The ambiguity function of the second signal is the second ambiguity function, where M equals N+1. The specific implementation and technical effects of this solution will be described in detail in the subsequent method embodiments and will not be elaborated here.

[0079] The following describes two exemplary application scenarios of the embodiments of the present application in conjunction with Figure 4. As shown in Figure 5, it is a passive target measurement scenario. In this scenario, the second communication device 502 is a receiver, and the first communication device 501 is a transmitter. After the transmitter sends a measurement signal, the measurement signal reaches the target and the target reflects an echo signal (the target in Figure 5 is a car 503). The receiver hopes to detect the target through the echo signal reflected by the target, but it will be interfered with by the LOS path signal between the transmitter and the receiver. In the scenario shown in Figure 5, the perception method provided by the embodiment of the present application can be applied to suppress the interference caused by the LOS path signal on the echo signal reflected by the target, thereby improving the perception performance.

[0080] As shown in Figure 6, this is an active interference suppression scenario. In this scenario, the second communication device 602 is a receiver, the first communication device 601 is a transmitter, and the communication device 603 is an interference source. After the transmitter sends the measurement signal, the receiver hopes to perceive it through the echo signal of the received measurement signal, for example, measuring the distance between itself and the transmitter, that is, ranging. However, the perception of the receiver will be interfered with by the signal between the interference source and the receiver. In the scenario shown in Figure 6, the perception method provided by the embodiment of the present application can be used to suppress the interference caused by the signal emitted by the interference source to the echo signal of the measurement signal, thereby improving the perception performance.

[0081] Optionally, the first communication device 401 or the second communication device 402 can be implemented by the communication device in Figure 7. Figure 7 shows a schematic diagram of the hardware structure of the communication device 700 provided in this application. The communication device 700 includes a processor 701, a communication line 702, and at least one communication interface (Figure 7 is only exemplary and is described by taking the communication interface 704 as an example). Optionally, the communication device 700 may also include a memory 703.

[0082] The processor 701 can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present application.

[0083] Communication link 702 may include a pathway for transmitting information between the aforementioned components.

[0084] The communication interface 704 uses any transceiver or other device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.

[0085] The memory 703 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may exist independently and be connected to the processor via a communication line 702. The memory may also be integrated with the processor.

[0086] The memory 703 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 701. The processor 701 is used to execute the computer-executable instructions stored in the memory 703, thereby implementing the perception method provided in the following embodiments of the present application.

[0087] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code or computer program code, which is not specifically limited in the embodiments of the present application.

[0088] In a specific implementation, as an embodiment, the processor 701 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 7 .

[0089] In a specific implementation, as an embodiment, the communication device 700 may include multiple processors, each of which may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0090] In a specific implementation, as an embodiment, the communication device 700 may further include an output device 705 and an input device 706. The output device 705 communicates with the processor 701 and can display information in a variety of ways. For example, the output device 705 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 706 communicates with the processor 701 and can receive user input in a variety of ways. For example, the input device 706 can be a mouse, a keyboard, a touch screen device, or a sensor device.

[0091] It is understood that the structure shown in FIG7 does not constitute a specific limitation on the communication device 700. For example, in other embodiments of the present application, the communication device 700 may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0092] Optionally, in an embodiment of the present application, the terminal device may be a device for implementing a communication function. The terminal device may also be referred to as user equipment (UE), terminal, access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile terminal (MT), user terminal, wireless communication device, user agent or user device, etc. The terminal device may be, for example, a wireless terminal in IoT, V2X, D2D, M2M, the fifth generation (5G) network, or a future evolved public land mobile network (PLMN). A wireless terminal may refer to a device with wireless transceiver functions, which may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; may also be deployed on water (such as ships, etc.); and may also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0093] Exemplarily, the terminal device may be a drone, an IoT device (e.g., a sensor, an electricity meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also referred to as a wearable smart device), a tablet computer or a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a smart home, or a similar device. The terminal can be a wireless terminal in a home, a vehicle-mounted terminal, a vehicle with vehicle-to-vehicle (V2V) communication capability, an intelligent connected car, a drone with UAV-to-UAV (U2U) communication capability, etc. The terminal can be mobile or fixed, and this application does not make specific restrictions on this.

[0094] Optionally, in an embodiment of the present application, the network device is a device that connects a terminal device to a wireless network, and may be an evolutionary Node B (eNB or eNodeB) in an LTE or evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro base station eNB and a micro base station eNB in ​​a heterogeneous network scenario; or it may be a next generation node B (gNodeB or gNB) in a 5G system; or it may be a transmission reception point (TRP); or it may be a base station in a future evolved PLMN; or it may be a broadband network gateway (BNG), an aggregation switch or a non-3GPP access device; or it may be a wireless controller in a cloud radio access network (CRAN); or it may be an access point (AP) in a WiFi system; or it may be a wireless relay node or a wireless backhaul node; or it may be a device that implements base station functions in IoT, V2X, D2D, or M2M, and the embodiments of the present application do not specifically limit this.

[0095] Exemplarily, the base stations in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, etc., and the embodiments of the present application do not specifically limit this.

[0096] The following will combine Figures 1 to 7 and take the interaction between the first communication device 401 and the second communication device 402 shown in Figure 4 as an example to explain the perception method provided in the embodiment of the present application.

[0097] It is understood that in the embodiments of the present application, the first communication device and / or the second communication device may perform some or all of the steps in the embodiments of the present application. 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 than those presented in the embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application need to be performed.

[0098] It should be noted that the message names between the various devices or the names of the parameters in the messages in the following embodiments of the present application are only examples, and other names may be used in specific implementations. The embodiments of the present application do not specifically limit this.

[0099] As shown in FIG8 , the sensing method provided in an embodiment of the present application includes the following steps:

[0100] S801: A first communication device transmits a first signal and waveform information of the first signal, and a second communication device receives the waveform information of the first signal and an echo signal of the first signal. The first signal is the Nth signal transmitted by the first communication device, where N is a positive integer greater than or equal to 1.

[0101] S802. The second communication device determines the first signal according to waveform information of the first signal.

[0102] S803. The second communication device determines a first cross-correlation function based on the first signal and the echo signal of the first signal, where the first cross-correlation function is obtained by calculating the cross-correlation value between a signal obtained after performing at least one of three operations of time delay, Doppler frequency shift and angle deflection on the first signal and the echo signal of the first signal.

[0103] S804: The second communication device determines, based on the first mutual correlation function, that a first ambiguity function needs to be suppressed, where the first ambiguity function is the ambiguity function of the first signal.

[0104] S805: The second communication device sends first indication information to the first communication device, where the first indication information is used to determine a second ambiguity function, where the second ambiguity function has local amplitude suppression relative to the first ambiguity function.

[0105] S806. The first communication device determines a second signal according to the first indication information, where the ambiguity function of the second signal is a second ambiguity function.

[0106] S807: The first communication device sends a second signal, and the second communication device receives an echo signal of the second signal, where the second signal is the Mth signal sent by the first communication device, where M is equal to N+1.

[0107] It can be understood that a waveform is a graphic abstraction of the distribution of a signal in time, frequency or angle. In this application, the term "signal" and "waveform" can be used interchangeably.

[0108] In S801, the first communication device transmits an Nth signal. For ease of explanation, the Nth signal is hereinafter referred to as the first signal. In the embodiment of the present application, the first signal can be used to sense or measure the target. In other words, it can also be referred to as the first communication device transmitting the first signal in the Nth sensing or measurement.

[0109] It should be noted that the waveform of the first signal is not limited in the embodiments of the present application. For example, the first signal can be a continuous wave (CW) waveform, an FMCW waveform, an OFDM waveform, or other waveforms.

[0110] Optionally, the first communication device may send the first signal in an omnidirectional or directional manner. In a perception scenario, if the first signal is used to perceive a target, as a possible implementation, when the first communication device has no prior knowledge of the position of the target, the first signal may be uniformly transmitted to the entire space in an omnidirectional manner. For example, in a smart home scenario, when it is necessary to track a person's trajectory, the smart devices in the home have no prior knowledge of the person's position, and the first signal may be sent omnidirectionally to detect the person's distance, position and other information. As another possible implementation, when the first communication device has prior knowledge of the position of the target, the first signal may be sent in a certain direction in a directional manner. For example, in an in-vehicle perception scenario, when the driver is alarmed for drowsiness, the first communication device may pre-master the driver's position information (such as the driving seat) and send the first signal to that position.

[0111] After the first communication device transmits a first signal, the second communication device receives the corresponding signal. It should be understood that after the first signal is transmitted through the channel, the signal received by the second communication device is not the first signal itself, but rather an echo signal of the first signal after transmission through the channel. Due to environmental factors, the second communication device may receive one or more echo signals of the first signal.

[0112] Optionally, the second communication device may receive the echo signal of the first signal in an omnidirectional or directional manner. Furthermore, the receiving mode of the second communication device matches the transmitting mode of the first signal. For example, when the first communication device transmits the first signal in an omnidirectional manner, the second communication device receives the echo signal of the first signal in an omnidirectional manner. When the first communication device transmits the first signal in a directional manner, the second communication device receives the echo signal of the first signal in a directional manner.

[0113] In addition, the first communication device also sends the waveform information of the first signal to the second communication device. The waveform information of the first signal is used to determine the first signal, and its specific implementation is described in the introduction to S802 below.

[0114] In S802, after receiving the waveform information of the first signal, the second communication device may determine the first signal according to the waveform information of the first signal.

[0115] Optionally, the waveform information of the first signal may be a waveform parameter, a waveform index or a waveform sequence of the first signal. Wherein, when the waveform information of the first signal is a waveform parameter or a waveform sequence of the first signal, it can be understood that the second communication device can directly determine the first signal based on the waveform parameter or the waveform sequence of the first signal. When the waveform information of the first signal is a waveform index of the first signal, the waveform index corresponds to the waveform corresponding to the first signal in the waveform set preconfigured by the first communication device and the second communication device, or in other words, the waveform index is used to identify the waveform of the first signal in the waveform set. After the second communication device receives the waveform index of the first signal, it can determine the waveform corresponding to the waveform index in the preconfigured waveform set as the waveform of the first signal.

[0116] In S803, after determining the first signal, the second communication device may perform a calculation based on the first signal and the received echo signal of the first signal to determine a first cross-correlation function. The first cross-correlation function is obtained by calculating a cross-correlation value between a signal obtained by performing at least one of time delay, Doppler frequency shift, and angle shift on the first signal and the echo signal of the first signal.

[0117] Specifically, because the second communication device has determined the first signal, the second communication device can perform at least one of the following operations on the first signal: time delay, Doppler frequency shift, and angle deflection, to obtain a shifted first signal. The second communication device can then perform a correlation operation on the shifted first signal with the received echo signal of the first signal to obtain a cross-correlation value between the shifted first signal and the echo signal of the first signal, thereby determining a first cross-correlation function. The method for performing the correlation operation to obtain the corresponding cross-correlation value can be referenced to existing calculation methods and is not elaborated here.

[0118] Optionally, the second communication device may select to perform at least one of the three operations of time delay, Doppler frequency shift, and angle deflection on the first signal (hereinafter referred to as offset operation) according to the application scenario. For example, in a ranging scenario, the second communication device may choose to perform time delay and Doppler frequency shift operations on the first signal. Alternatively, the offset operation that the second communication device needs to perform on the first signal may also be preconfigured. Alternatively, the user may select the offset operation that the second communication device performs on the first signal. Of course, the embodiment of the present application does not specifically limit how the second communication device selects the offset operation to be performed on the first signal.

[0119] In S804, after determining the first cross-correlation function, the second communication device can determine whether to suppress the ambiguity function of the first signal based on the first cross-correlation function. In this embodiment of the present application, the ambiguity function of the first signal is referred to as the first ambiguity function. If it is determined that the first ambiguity function needs to be suppressed, the process continues with S805-S807. If it is determined that the first ambiguity function does not need to be suppressed, the second communication device can skip S805-S807 and can perform sensing or measurement based on the first cross-correlation function.

[0120] Optionally, the second communication device may determine whether the first fuzzy function needs to be suppressed based on a configured algorithm, rule, or model. In a possible implementation, the condition for determining whether the first fuzzy function needs to be suppressed may be set according to an application scenario.

[0121] For example, in a passive target measurement scenario, if the image of the first cross-correlation function determined by the second communication device is as shown in FIG2 , the model pre-configured by the second communication device determines, based on the image of the first cross-correlation function, that the sidelobe level of the LOS path signal almost drowns out the mainlobe of the weak signal reflected by the target, and cannot well detect the mainlobe of the weak signal reflected by the target, then the model can output a result of determining that the first ambiguity function needs to be suppressed. Alternatively, in a tracking scenario, if the model pre-configured by the second communication device finds, based on the image of the first cross-correlation function, that the mainlobe level of the signal reflected by the target gradually decreases, and the signal reflected by the target gradually weakens, making detection difficult, then the model can output a result of determining that the first ambiguity function needs to be suppressed. Alternatively, in an active interference suppression scenario, the model pre-configured by the second communication device finds, based on the image of the first cross-correlation function, that the signal of the interference source causes significant interference in a specific area and needs to be suppressed.

[0122] In the embodiment of the present application, if the second communication device determines that the first ambiguity function needs to be suppressed, the second communication device may determine the position where the first ambiguity function needs to be suppressed.

[0123] Optionally, the second communication device may determine the position that needs to be suppressed in the first fuzzy function according to a configured algorithm, rule or model.

[0124] Optionally, the second communication device can combine other information to determine the position that needs to be suppressed in the first ambiguity function. For example, in the scenario of passive target measurement, the second communication device can determine the approximate position where the main lobe of the weak signal reflected by the target should exist based on upper-layer signaling or previous tracking information. If, in the first cross-correlation function, the side lobe of the LOS path signal causes great interference at the approximate position where the main lobe of the weak signal reflected by the target should exist, and the main lobe of the weak signal reflected by the target cannot be well detected, then the second communication device can determine the approximate position where the main lobe of the weak signal reflected by the target should exist as the position that needs to be suppressed in the first ambiguity function.

[0125] Optionally, the second communication device may further determine the amplitude to be suppressed at the position to be suppressed in the first ambiguity function, or in other words, the second communication device may further determine the amplitude to be suppressed corresponding to the position to be suppressed in the first ambiguity function.

[0126] In the embodiment of the present application, the position to be suppressed and / or the amplitude to be suppressed in the first fuzzy function can be represented or indicated by various forms of information, which will be explained in detail in the introduction to S805 below.

[0127] In S805, after the second communication device determines that the first ambiguity function needs to be suppressed, it may send first indication information to the first communication device. The first indication information is used to determine a second ambiguity function, where the second ambiguity function has a local amplitude suppression relative to the first ambiguity function. In other words, the second ambiguity function is a ambiguity function obtained by performing local amplitude suppression on the first ambiguity function.

[0128] The first indication information is introduced in detail below.

[0129] In a possible implementation, the first indication information may include location information for suppressing the first fuzzy function.

[0130] Optionally, the location to be suppressed in the first ambiguity function may include at least one coordinate point and / or at least one coordinate range on the domain of the first ambiguity function. The coordinate point may be determined by at least one of a time delay value, a Doppler frequency value, and an angle value. The coordinate range may be determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

[0131] For example, assuming that the domain of the first fuzzy function includes the time delay dimension, and the time delay is represented by the parameter τ, the position to be suppressed in the first fuzzy function can be represented by {τ i}={1us,5us} indicates that the position corresponding to the coordinate point of 1us or 5us in the first fuzzy function needs to be suppressed. Alternatively, the position to be suppressed in the first fuzzy function can be represented by {[l,r] i}={[1us,2us],[5us,6us]} indicates that the position corresponding to the coordinate range of [1us,2us] or 5us,6us] in the first ambiguity function needs to be suppressed. For another example, assuming that the domain of the first ambiguity function includes the Doppler frequency dimension, and the Doppler frequency is represented by the parameter f, the position to be suppressed in the first ambiguity function can be represented by {f i}={10kHz,50kHz} indicates that the position corresponding to the coordinate point of 10kHz or 50kHz in the first ambiguity function needs to be suppressed. Alternatively, the position to be suppressed in the first ambiguity function can be indicated by {[b,u]}={[10kHz,20kHz],[50kHz,60kHz]}, indicating that the position corresponding to the coordinate range of [10kHz,20kHz] or [50kHz,60kHz] in the first ambiguity function needs to be suppressed.

[0132] Optionally, the first indication information can also indicate the position that needs to be suppressed in the first fuzzy function through other quantities outside the dimension of the first fuzzy function definition domain, such as the distance corresponding to the delay, the speed corresponding to the Doppler frequency, etc. The embodiment of the present application does not impose specific restrictions on this.

[0133] In this implementation, after the first communication device determines the position at which the first ambiguity function is to be suppressed based on the first indication information, the amplitude corresponding to the position that needs to be suppressed may be preconfigured for the first communication device. For example, if the amplitude value that needs to be suppressed is preconfigured for the first communication device as 10 dB, and the first communication device determines, based on the first indication information, that the position corresponding to the 1µs coordinate point in the first ambiguity function needs to be suppressed, the first communication device may determine that the amplitude value corresponding to the 1µs coordinate point in the first ambiguity function needs to be suppressed by 10 dB.

[0134] In another possible implementation, the first indication information may include position information and amplitude information for suppressing the first ambiguity function, wherein the position information corresponds to the amplitude information.

[0135] Optionally, the amplitude information in the first indication information may include an amplitude value of the second ambiguity function at the corresponding position, a peak sidelobe ratio value of the second ambiguity function at the corresponding position, or an integrated sidelobe ratio value of the second ambiguity function at the corresponding position. The amplitude value of the second ambiguity function at the corresponding position can be understood as the autocorrelation value of the corresponding position.

[0136] In this implementation, the first communication device can determine, based on the first indication information, the amplitude value, peak sidelobe ratio value, or integrated sidelobe ratio value of the suppressed ambiguity function (i.e., the second ambiguity function) at the corresponding position after suppressing the corresponding position of the first ambiguity function, thereby determining how to suppress the first ambiguity function to obtain the second ambiguity function. Exemplarily, the position information in the first indication information may include τ i =1us, and the amplitude value of the corresponding second ambiguity function can be 50dB. The first communication device can determine, based on the first indication information, that if the amplitude value corresponding to the coordinate point of 1us in the first ambiguity function is suppressed, the amplitude value of the suppressed ambiguity function (i.e., the second ambiguity function) corresponding to the coordinate point of 1us should be 50dB.

[0137] Optionally, the amplitude information in the first indication information may include an attenuation value of the amplitude value of the second ambiguity function at a corresponding position compared to the first ambiguity function or the third ambiguity function. The third ambiguity function is the ambiguity function of the first signal (or initial signal) sent by the first communication device. It is understood that when the first, second, and third ambiguity functions share a common domain, the position information in the first indication information may indicate the same position in the first, second, and third ambiguity functions.

[0138] In this implementation, the first communication device can directly determine the attenuation value for suppressing the corresponding position of the first fuzzy function or the third fuzzy function based on the first indication information, thereby determining how to suppress the first fuzzy function or the third fuzzy function to obtain the second fuzzy function. Exemplarily, the first indication information includes: {(τ, s) i}={(1us, 15dB),(5us, 10dB)}, that is, the position information that needs to suppress the first ambiguity function includes τ i =1us and τ i =5us, and the corresponding attenuation values ​​are 15dB and 10dB respectively, then the first communication device can determine, according to the first indication information, that the amplitude value corresponding to the coordinate point of 1us in the first ambiguity function needs to be suppressed by 15dB, that is, the amplitude value corresponding to the coordinate point of 1us in the first ambiguity function needs to be reduced by 15dB, and the amplitude value corresponding to the coordinate point of 5us in the first ambiguity function needs to be suppressed by 10dB, that is, the amplitude value corresponding to the coordinate point of 5us in the first ambiguity function needs to be reduced by 10dB.

[0139] Optionally, the amplitude information that needs to be suppressed can also be indicated by identification information pre-agreed by the first communication device and the second communication device. For example, the first communication device and the second communication device pre-agreed that in the first indication information, the bit value of a certain field is 01, which means that the amplitude value of the first fuzzy function at the corresponding position needs to be suppressed by 10dB, and the bit value of the field is 00, which means that the amplitude value of the third fuzzy function at the corresponding position needs to be suppressed by 10dB. The embodiment of the present application does not specifically limit the amplitude information indicated by the agreed identification information.

[0140] In another possible implementation, the first indication information may include waveform information of the second signal, wherein the waveform information of the second signal is used to determine the second signal. For example, the first indication information may include waveform parameters, a waveform index, or a waveform sequence of the second signal, wherein the waveform index corresponds to the waveform corresponding to the second signal in a waveform set preconfigured by the first communication device and the second communication device, or in other words, the waveform index is used to identify the waveform of the second signal in the waveform set. After receiving the first indication information, the first communication device may determine the waveform corresponding to the waveform index in the preconfigured waveform set as the waveform of the second signal.

[0141] Optionally, in this implementation, the waveform set including the waveform corresponding to the second signal pre-configured by the first communication device and the second communication device, when the waveform information of the first signal is the waveform index of the first signal in the above introduction to S801, the waveform set including the waveform corresponding to the first signal can be the same waveform set or different waveform sets, and the embodiment of the present application does not impose any specific restrictions on this.

[0142] It is understood that in this implementation, the second communication device needs to determine the second signal before transmitting the waveform parameters, waveform index, or waveform sequence of the second signal to the first communication device in the first indication information. Optionally, the second communication device can determine a second ambiguity function after locally suppressing the amplitude of the first ambiguity function based on the determined location where the first ambiguity function needs to be suppressed and the amplitude corresponding to the location that needs to be suppressed, thereby determining the second signal corresponding to the second ambiguity function.

[0143] It should be noted that the embodiments of the present application do not limit the specific implementation of the first indication information including the waveform parameters, waveform index, or waveform sequence of the second signal. For example, after determining the second signal, the second communication device may quantize and compress the entire waveform of the second signal and then feed it back to the first communication device. The quantized and compressed waveform fed back by the second communication device may be referred to as the first indication information including the waveform sequence of the second signal.

[0144] Optionally, the second communication device may further feedback the second fuzzy function to the first communication device via the first indication information, so that the first communication device may determine the second signal based on the second fuzzy function. The second communication device may feedback the second fuzzy function in a lossy or lossless manner. For example, after obtaining the second fuzzy function, the second communication device may quantize the value of the second fuzzy function at even intervals within a certain domain of the second fuzzy function, and feedback the entire second fuzzy function by feedbacking the value of the quantized second fuzzy function within the interval. For another example, the second communication device may quantize the key step points of the second fuzzy function and feedback the entire second fuzzy function by feedbacking the values ​​of the quantized key step points.

[0145] In S806, if the first indication information includes the position information for suppressing the first ambiguity function, or includes the position information and amplitude information for suppressing the first ambiguity function, after receiving the first indication information, the first communications device may determine the second ambiguity function based on the first indication information, thereby determining the second signal. For details on how the first communications device determines the second ambiguity function based on the first indication information, refer to the above description of the first indication information in S805 and are not further elaborated here.

[0146] How the first communication device determines the second signal corresponding to the second ambiguity function based on the second ambiguity function can refer to existing determination methods. For example, it can be determined by numerical optimization methods such as the alternating direction method of multipliers (ADMM). This application does not make any specific restrictions.

[0147] Alternatively, when the first indication information includes waveform information of the second signal, the first communication device may also directly determine the second signal according to the first indication information.

[0148] In S807, after determining the second signal, the first communication device sends the second signal for sensing or measurement. Therefore, compared to the first signal being the Nth signal sent by the first communication device, the second signal is the Mth signal sent by the first communication device, where M is equal to N+1.

[0149] After the first communication device transmits the second signal, the second communication device correspondingly receives an echo signal of the second signal. Optionally, the manner in which the first communication device transmits the second signal and the manner in which the second communication device receives the echo signal of the second signal can be referred to above in the description of the manner in which the first communication device transmits the second signal and the manner in which the second communication device receives the echo signal of the first signal in S801, and will not be further described here.

[0150] Based on the perception method provided in the embodiment of the present application, after the second communication device receives the echo signal of the first signal, if it is determined based on the cross-correlation function of the first signal and the echo signal that the ambiguity function of the first signal needs to be suppressed, then a first indication information can be sent to the first communication device, so that the first communication device can determine the second ambiguity function obtained after suppressing the first ambiguity function based on the first indication information, thereby further determining the corresponding second signal. After the first communication device determines the second signal, it sends the second signal. Correspondingly, after the second communication device receives the echo signal of the second signal, because the second ambiguity function is a ambiguity function that suppresses the local area that needs to be suppressed in the previous first ambiguity function, the second ambiguity function helps to reduce the interference existing in the original local area, better matches the perception scene, and improves the weak target detection capability or the ability to suppress active interference.

[0151] Optionally, after receiving the echo signal of the second signal, the second communication device may perform a calculation based on the second signal and the echo signal of the second signal to determine a second cross-correlation function. The second cross-correlation function is obtained by calculating the cross-correlation value between a signal obtained by performing at least one of time delay, Doppler shift, and angle shift on the second signal and the echo signal of the second signal. For a specific implementation, please refer to the above description of how to determine the first cross-correlation function in S803 and will not be repeated here.

[0152] Furthermore, the second communication device can again determine whether it is necessary to suppress the second ambiguity function based on the second mutual correlation function. If it is determined that the second ambiguity function needs to be suppressed, the second communication device can again send instruction information for determining the fourth ambiguity function to the first communication device, wherein the fourth ambiguity function is a ambiguity function that has local amplitude suppression compared to the second ambiguity function, so that the first communication device determines the third signal corresponding to the fourth ambiguity function based on the fourth ambiguity function, and sends the third signal to perceive or measure again, and so on. A similar process can be continued until the second communication device determines that it is not necessary to suppress the corresponding ambiguity function. If the second communication device determines that it is not necessary to suppress the second ambiguity function, the second communication device can perceive or measure based on the second mutual correlation function. For details, please refer to the above introduction to S803-S806, which will not be repeated here.

[0153] It should be noted that, in the above description, the second communication device needs to determine the second signal in order to determine the second cross-correlation function. If, in steps S804-S806, the second communication device does not determine the second signal or the waveform information of the second signal, in step S807, the first communication device needs to send the waveform information of the second signal to the second communication device so that the second communication device can determine the second signal based on the waveform information of the second signal.

[0154] For ease of understanding, an example of the application of the perception method provided in an embodiment of the present application is described below in conjunction with Figures 2, 9 and 10.

[0155] Assume that in a passive target measurement scenario, a first communication device sends a first signal to detect the passive target and sends the waveform information of the first signal to a second communication device. The second communication device determines the first signal based on the waveform information of the first signal and delays the first signal in the time domain to obtain the delayed first signal. After the second communication device receives the echo signal of the first signal, it correlates the delayed first signal with the received echo signal to obtain a first cross-correlation function. The image of the first cross-correlation function is shown in Figure 2, including the cross-correlation function image of the strong signal of the LOS path between the first communication device and the second communication device and the measurement signal, and the cross-correlation function image of the echo signal (weak signal) reflected by the target and the measurement signal.

[0156] After determining the first cross-correlation function, the second communication device discovers that the sidelobe level of the strong signal is too high, nearly drowning out the mainlobe of the weak signal in the sidelobe region, resulting in the inability to detect the target. The second communication device determines that the ambiguity function of the first signal transmitted by the first communication device needs to be suppressed, that is, the first ambiguity function needs to be suppressed. The second communication device determines that the position in the first ambiguity function that needs to be suppressed is the position corresponding to the coordinate point of τ = 0.5us, and the amplitude value that needs to be suppressed at the coordinate point of τ = 0.5us is 8dB. The second communication device sends the first indication information including (τ, s) = (0.5us, 8dB) to the first communication device.

[0157] After receiving the first indication, the first communication device determines that the position where the first ambiguity function needs to be suppressed is τ = 0.5 μs. The amplitude attenuation corresponding to this position is 8 dB. The suppressed ambiguity function, i.e., the second ambiguity function, is thus determined. The graph of the second ambiguity function is shown in FIG9 . It can be seen that the sidelobe level of the second ambiguity function at the coordinate point of τ = 0.5 μs is significantly reduced.

[0158] The first communication device determines the corresponding second signal according to the second fuzzy function, and the fuzzy function of the second signal is the second fuzzy function. The first communication device sends the second signal again to detect the passive target, and sends the waveform information of the second signal to the second communication device. The second communication device determines the second signal according to the waveform information of the second signal, and delays the second signal in the time domain to obtain the delayed second signal. After the second communication device receives the echo signal of the second signal, it performs a correlation operation on the delayed second signal and the received echo signal to obtain a second cross-correlation function. Among them, the image of the second cross-correlation function is shown in Figure 10, including the cross-correlation function image of the strong signal of the LOS path between the first communication device and the second communication device and the measurement signal, and the cross-correlation function image of the echo signal (weak signal) reflected by the target and the measurement signal. It can be seen that in the cross-correlation function image obtained by this measurement, the main lobe of the weak signal can be observed more clearly. Based on the perception method provided in the embodiment of the present application, the perception performance of the second signal is improved compared with the perception performance of the first signal, and the interference caused by the side lobe of the LOS path is suppressed.

[0159] It is understood that in each of the above embodiments, the methods and / or steps implemented by the first communication device may also be implemented by components (e.g., chips or circuits) applicable to the first communication device. The methods and / or steps implemented by the second communication device may also be implemented by components (e.g., chips or circuits) applicable to the second communication device.

[0160] The above description primarily describes the solutions provided by the embodiments of the present application from the perspective of interaction between various devices. Accordingly, embodiments of the present application also provide a communication device for implementing the various methods described above. The communication device may be the first communication device in the method embodiments described above, or a device including the first communication device, or a component usable in the first communication device; alternatively, the communication device may be the second communication device in the method embodiments described above, or a device including the second communication device, or a component usable in the second communication device. It will be understood that, to implement the aforementioned functions, the communication device includes hardware structures and / or software modules corresponding to the respective functions. Those skilled in the art will readily appreciate that, in conjunction with the various exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0161] In the embodiment of the present application, the functional modules of the communication device can be divided according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0162] Figure 11 shows a schematic diagram of the structure of a communication device 1100. The communication device 1100 includes an interface module 1101 and a processing module 1102. The interface module 1101, which may also be referred to as a transceiver module or transceiver unit, is used to implement transceiver functions and may be, for example, a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0163] Taking the communication device as the second communication device in the above method embodiment as an example, in one possible design, interface module 1101 is configured to receive waveform information of a first signal and an echo signal of the first signal, where the first signal is the Nth signal sent by the first communication device, where N is a positive integer greater than or equal to 1. Processing module 1102 is configured to determine the first signal based on the waveform information of the first signal. Processing module 1102 is further configured to determine a first cross-correlation function based on the first signal and the echo signal of the first signal, where the first cross-correlation function is calculated by calculating the cross-correlation value between a signal obtained by performing at least one of time delay, Doppler frequency shift, and angle shift on the first signal and the echo signal of the first signal. Processing module 1102 is further configured to determine, based on the first cross-correlation function, that a first ambiguity function needs to be suppressed, where the first ambiguity function is the ambiguity function of the first signal. Interface module 1101 is further configured to send first indication information to the first communication device, where the first indication information is configured to determine that a second ambiguity function has local amplitude suppression relative to the first ambiguity function. The interface module 1101 is further configured to receive an echo signal of a second signal, where the second signal is the Mth signal sent by the first communication device, and the ambiguity function of the second signal is a second ambiguity function, where M is equal to N+1.

[0164] In one possible design, the first indication information includes location information for suppressing the first fuzzy function.

[0165] In one possible design, the first indication information includes position information and amplitude information for suppressing the first fuzzy function, and the position information corresponds to the amplitude information.

[0166] In one possible design, the position information includes at least one coordinate point and / or at least one coordinate range on the domain of the first fuzzy function.

[0167] In one possible design, the coordinate point is determined by at least one of a time delay value, a Doppler frequency value, and an angle value.

[0168] In one possible design, the coordinate range is determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

[0169] In one possible design, the amplitude information includes the amplitude value of the second ambiguity function at the corresponding position, the peak sidelobe ratio value of the second ambiguity function at the corresponding position, or the integrated sidelobe ratio value of the second ambiguity function at the corresponding position.

[0170] In one possible design, the amplitude information includes an attenuation value of the amplitude value of the second ambiguity function at a corresponding position compared with the first ambiguity function or the third ambiguity function; wherein the third ambiguity function is the ambiguity function of the first signal sent by the first communication device.

[0171] In one possible design, the first indication information includes a waveform parameter, a waveform index or a waveform sequence of the second signal, wherein the waveform index corresponds to a waveform corresponding to the second signal in a waveform set, and the waveform set is configured in the first communication device and the second communication device.

[0172] Taking the communication device as the first communication device in the above method embodiment as an example, in one possible design, the interface module 1101 is configured to send a first signal and waveform information of the first signal, where the first signal is the Nth signal sent by the first communication device, and the ambiguity function of the first signal is the first ambiguity function; where N is a positive integer greater than or equal to 1. The interface module 1101 is further configured to receive first indication information sent by a second communication device, where the first indication information is used to determine a second ambiguity function, where the second ambiguity function has local amplitude suppression relative to the first ambiguity function. The processing module 1102 is configured to determine a second signal based on the first indication information, where the ambiguity function of the second signal is the second ambiguity function. The interface module 1101 is further configured to send a second signal; the second signal is the Mth signal sent by the first communication device, where M is equal to N+1.

[0173] In one possible design, the first indication information includes location information for suppressing the first fuzzy function.

[0174] In one possible design, the first indication information includes position information and amplitude information for suppressing the first fuzzy function, and the position information corresponds to the amplitude information.

[0175] In one possible design, the position information includes at least one coordinate point and / or at least one coordinate range on the domain of the first fuzzy function. Based on this solution, the position to be suppressed in the first fuzzy function can be fed back through the coordinate point or coordinate range of the first fuzzy function.

[0176] In one possible design, the coordinate point is determined by at least one of a time delay value, a Doppler frequency value, and an angle value.

[0177] In one possible design, the coordinate range is determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

[0178] In one possible design, the amplitude information includes the amplitude value of the second ambiguity function at the corresponding position, the peak sidelobe ratio value of the second ambiguity function at the corresponding position, or the integrated sidelobe ratio value of the second ambiguity function at the corresponding position.

[0179] In one possible design, the amplitude information includes an attenuation value of the amplitude value of the second ambiguity function at a corresponding position compared with the first ambiguity function or the third ambiguity function; wherein the third ambiguity function is the ambiguity function of the first signal sent by the first communication device.

[0180] In combination with the above-mentioned second aspect, in one possible design, the first indication information includes waveform parameters, waveform index or waveform sequence of the second signal, wherein the waveform index corresponds to the waveform corresponding to the second signal in the waveform set, and the waveform set is configured in the first communication device and the second communication device.

[0181] In this embodiment, the communication device 1100 is presented in the form of various functional modules divided in an integrated manner. Here, "module" may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and / or other devices that can provide the above functions.

[0182] In a simple embodiment, those skilled in the art may appreciate that the communication device 1100 may take the form of the communication device 700 shown in FIG. 7 .

[0183] For example, the processor 701 in the communication device 700 shown in FIG7 can call the computer-executable instructions stored in the memory 703 to enable the communication device 700 to perform the perception method in the above-mentioned method embodiment. Specifically, the functions / implementation processes of the interface module 1101 and the processing module 1102 in FIG11 can be implemented by the processor 701 in the communication device 700 shown in FIG7 calling the computer-executable instructions stored in the memory 703. Alternatively, the functions / implementation processes of the processing module 1102 in FIG11 can be implemented by the processor 701 in the communication device 700 shown in FIG7 calling the computer-executable instructions stored in the memory 703, and the functions / implementation processes of the interface module 1101 in FIG11 can be implemented by the communication interface 704 in the communication device 700 shown in FIG7.

[0184] Since the communication device 1100 provided in this embodiment can execute the above-mentioned perception method, the technical effects that can be obtained can refer to the above-mentioned method embodiments and will not be repeated here.

[0185] It should be noted that one or more of the above modules or units can be implemented by software, hardware, or a combination of the two. When any of the above modules or units is implemented in software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow. The processor can be built into an SoC (system on chip) or an ASIC, or it can be an independent semiconductor chip. In addition to the core used to execute software instructions to perform calculations or processing within the processor, it can further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a programmable logic device (PLD), or a logic circuit that implements dedicated logic operations.

[0186] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a DSP chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0187] Optionally, an embodiment of the present application further provides a chip system, comprising: at least one processor and an interface, wherein the at least one processor is coupled to a memory via the interface, and when the at least one processor executes a computer program or instruction in the memory, the method in any of the above method embodiments is executed. In one possible implementation, the communication device also includes a memory. Optionally, the chip system can be composed of a chip, or can include a chip and other discrete devices, which is not specifically limited in the embodiment of the present application.

[0188] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented by software programs, all or part of the embodiments may be implemented in the form of computer program products.

[0189] The present application provides a computer program product comprising one or more computer instructions, which, when executed on a communication device, enables any method of the embodiments of the present application to be executed.

[0190] When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.

[0191] The computer instructions may be stored in a computer-readable storage medium. The embodiment of the present application provides a computer-readable storage medium having instructions stored therein, which, when executed on a communication device, enables any method of the embodiment of the present application to be executed.

[0192] Computer instructions can be transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. A computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. Available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital versatile discs (DVDs)), or semiconductor media (e.g., solid state drives (SSDs)).

[0193] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0194] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations thereof may be made without departing from the scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Provided that such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

Claims

1. A perception method, characterized in that: The method comprises: The second communication device receives waveform information of a first signal and an echo signal of the first signal, where the first signal is an Nth signal sent by the first communication device, where N is a positive integer greater than or equal to 1; The second communication device determines the first signal according to the waveform information of the first signal; The second communication device determines a first cross-correlation function based on the first signal and the echo signal of the first signal, where the first cross-correlation function is obtained by calculating a cross-correlation value between a signal obtained by performing at least one of time delay, Doppler frequency shift, and angle deflection on the first signal and the echo signal of the first signal; The second communication device determines, based on the first cross-correlation function, that a first ambiguity function needs to be suppressed, where the first ambiguity function is an ambiguity function of the first signal; The second communication device sends first indication information to the first communication device, where the first indication information is used to determine a second ambiguity function, where the second ambiguity function has local amplitude suppression relative to the first ambiguity function; The second communication device receives an echo signal of a second signal, where the second signal is the Mth signal sent by the first communication device, and the ambiguity function of the second signal is the second ambiguity function, where M is equal to N+1.

2. The method according to claim 1, characterized in that The first indication information includes location information for suppressing the first fuzzy function.

3. The method according to claim 1, characterized in that The first indication information includes position information and amplitude information for suppressing the first fuzzy function, and the position information corresponds to the amplitude information.

4. The method according to claim 2 or 3, characterized in that The position information includes at least one coordinate point and / or at least one coordinate range on the definition domain of the first fuzzy function.

5. The method according to claim 4, characterized in that The coordinate point is determined by at least one of a time delay value, a Doppler frequency value, and an angle value.

6. The method according to claim 4 or 5, characterized in that The coordinate range is determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

7. The method according to claim 3, characterized in that The amplitude information includes an amplitude value of the second ambiguity function at a corresponding position, a peak sidelobe ratio value of the second ambiguity function at a corresponding position, or an integrated sidelobe ratio value of the second ambiguity function at a corresponding position.

8. The method according to claim 3, characterized in that The amplitude information includes an attenuation value of an amplitude value of the second ambiguity function at a corresponding position compared with the first ambiguity function or the third ambiguity function; wherein the third ambiguity function is the ambiguity function of the first signal sent by the first communication device.

9. The method according to claim 1, characterized in that The first indication information includes a waveform parameter, a waveform index or a waveform sequence of the second signal, wherein the waveform index corresponds to a waveform corresponding to the second signal in a waveform set, and the waveform set is configured in the first communication device and the second communication device.

10. A sensing method, characterized in that: The method comprises: A first communication device sends a first signal and waveform information of the first signal, wherein the first signal is an Nth signal sent by the first communication device, and the ambiguity function of the first signal is a first ambiguity function; wherein N is a positive integer greater than or equal to 1; The first communication device receives first indication information sent by the second communication device, where the first indication information is used to determine a second ambiguity function, where the second ambiguity function has local amplitude suppression relative to the first ambiguity function; The first communication device determines a second signal according to the first indication information, wherein the ambiguity function of the second signal is a second ambiguity function; The first communication device sends the second signal; the second signal is the Mth signal sent by the first communication device, where M is equal to N+1.

11. The method according to claim 10, characterized in that The first indication information includes location information for suppressing the first fuzzy function.

12. The method according to claim 10, characterized in that The first indication information includes position information and amplitude information for suppressing the first fuzzy function, and the position information corresponds to the amplitude information.

13. The method according to claim 11 or 12, characterized in that The position information includes at least one coordinate point and / or at least one coordinate range on the definition domain of the first fuzzy function.

14. The method according to claim 13, characterized in that The coordinate point is determined by at least one of a time delay value, a Doppler frequency value, and an angle value.

15. The method according to claim 13 or 14, characterized in that The coordinate range is determined by at least one of a time delay range, a Doppler frequency range, and an angle range.

16. The method according to claim 12, characterized in that The amplitude information includes an amplitude value of the second ambiguity function at a corresponding position, a peak sidelobe ratio value of the second ambiguity function at a corresponding position, or an integrated sidelobe ratio value of the second ambiguity function at a corresponding position.

17. The method according to claim 12, wherein: The amplitude information includes an attenuation value of an amplitude value of the second ambiguity function at a corresponding position compared with the first ambiguity function or the third ambiguity function; wherein the third ambiguity function is the ambiguity function of the first signal sent by the first communication device.

18. The method according to claim 10, characterized in that The first indication information includes a waveform parameter, a waveform index or a waveform sequence of the second signal, wherein the waveform index corresponds to a waveform corresponding to the second signal in a waveform set, and the waveform set is configured in the first communication device and the second communication device.

19. A communication device, characterized in that: include: A module or unit for implementing the method according to any one of claims 1 to 9; or a module or unit for implementing the method according to any one of claims 10 to 18.

20. A communication device, characterized in that: The communication device includes: a processor, the processor being configured to execute instructions stored in a memory; when the instructions are executed by the processor, the communication device executes the method according to any one of claims 1 to 9, or implements the method according to any one of claims 10 to 18.

21. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed by a computer, the method according to any one of claims 1 to 9 is executed, or the method according to any one of claims 10 to 18 is executed.

22. A communication system, characterized in that: The communication system includes a first communication device and a second communication device; the first communication device is used to execute the method according to any one of claims 1 to 9; and the second communication device is used to execute the method according to any one of claims 10 to 18.

Images