Communication method and communication apparatus

Abstract

Provided in the embodiments of the present application are a communication method and a communication apparatus, which can improve the accuracy of position estimation. The method comprises: a first apparatus receiving an interference signal, wherein the interference signal comprises at least two second sensing signals of a first frequency and at least two second sensing signals of a second frequency, the at least two second sensing signals of the first frequency are obtained by reflecting a first sensing signal of the first frequency, the at least two second sensing signals of the second frequency are obtained by reflecting a first sensing signal of the second frequency, the at least two second sensing signals of the first frequency comprise a second sensing signal of the first frequency obtained by a first reflection apparatus performing a first phase shift, and the at least two second sensing signals of the second frequency comprise a second sensing signal of the second frequency obtained by the first reflection apparatus performing a second phase shift; and the first apparatus sending a measurement report, wherein the measurement report comprises amplitude information of the interference signal.

Description

Communication methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202410705496.6, filed with the State Intellectual Property Office of China on May 31, 2024, entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more specifically, to communication methods and communication devices. Background Technology

[0003] In signal processing for various sensing applications, precise location information of the phase centers of the transmitting and receiving antennas is often required. However, due to vibrations or movements of the antenna platform carrying the antenna, the position of the antenna's phase center is usually not accurately obtained.

[0004] Currently, there are two main methods for accurately obtaining the position of the antenna's phase center. One is a motion error calibration method based on an inertial navigation unit (INS). This method works by having the INS measure the acceleration of the antenna platform (base station or terminal equipment) during vibration or motion, and then estimating the position error of the antenna's phase center caused by vibration or motion after smoothing and integration based on the acceleration. The other is a data-based motion error calibration method. This method works by having the sensing system collect data and then using a specific algorithm based on the reference point information contained in the data to calibrate the position error of the antenna's phase center caused by motion.

[0005] However, motion error calibration methods based on inertial navigation units (INS) suffer from thermal noise within the INS. This thermal noise causes position estimation errors to accumulate over time, eventually increasing the overall position estimation error. Data-based motion error calibration methods have specific requirements for data characteristics, thus limiting their application scenarios. Furthermore, data-based motion error calibration methods experience performance degradation when the signal-to-noise ratio of the data is low. Summary of the Invention

[0006] This application provides a communication method and a communication device that can improve the accuracy of location estimation.

[0007] To achieve the above objectives, this application adopts the following technical solution:

[0008] Firstly, a communication method is provided, applicable to a first device. For example, it can be executed by the first device itself, or by a component of the first device, such as its processor, chip, or chip system, or by a logic module or software capable of implementing all or part of the functions of the first device. Taking the execution by the first device as an example, the method includes: the first device receiving an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by a first reflecting device; the first device sending a measurement report, the measurement report including amplitude information of the interference signal.

[0009] The communication method provided in this application embodiment involves a first device receiving an interference signal and transmitting a measurement report including amplitude information of the interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include one second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include one second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device. Since the interference pattern corresponding to the interference signal has a stable mapping relationship with the amplitude of the interference signal, including amplitude information determined based on the interference signal in the measurement report can determine the position information of the first device and improve the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of the second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of first frequency and a second phase shift on the first sensing signal of second frequency, this method can also determine the operating direction of the first device.

[0010] In one possible implementation, the communication method provided in this application embodiment further includes: a first device receiving first configuration information, the first configuration information being used to indicate information about a first phase shift and a second phase shift. This scheme can indicate the first phase shift and the second phase shift information to the first device through the first configuration information.

[0011] In one possible implementation, the communication method provided in this application further includes: a first device sending first information, the first information indicating M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals of second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme allows the first and second phase shifts to be determined by configuring the first phase-shift sequence.

[0012] In one possible implementation, the communication method provided in this application further includes: a first device sending second information, the second information indicating the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme can determine the first phase shift and the second phase shift by the movement of the first device.

[0013] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0014] or,

[0015] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0016] In one possible implementation, the communication method provided in this application embodiment further includes: a first device measuring the interference signal and acquiring amplitude information of the interference signal. This solution provides a way to acquire amplitude information of the interference signal.

[0017] In one possible implementation, the communication method provided in this application further includes: the first device sending first position information of the first device, and / or, motion direction information of the first device. In this scheme, by sending the first position information of the first device and / or, motion direction information of the first device to the second device, the estimated position is determined based on the first position information of the first device and / or, motion direction information of the first device, thereby improving the accuracy of position estimation.

[0018] Secondly, a communication method is provided, applicable to a second device. For example, it can be executed by the second device itself, or by components of the second device, such as its processor, chip, or chip system, or by a logic module or software capable of implementing all or part of the functions of the second device. Taking the execution by the second device as an example, the method includes: the second device receiving a measurement report, the measurement report including amplitude information of an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by the first reflecting device; the second device determining a second position of the first device based on the amplitude information of the interference signal.

[0019] The communication method provided in this application embodiment involves a second device receiving a measurement report including amplitude information of an interference signal and determining a second position of a first device based on the amplitude information of the interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by a first reflecting device. Since the interference pattern corresponding to the interference signal has a stable mapping relationship with the amplitude of the interference signal, including amplitude information determined based on the interference signal in the measurement report can determine the position information of the first device and improve the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of the second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of the first frequency and a second phase shift on the first sensing signal of the second frequency, this method can also determine the direction of motion of the first device.

[0020] In one possible implementation, the communication method provided in this application embodiment further includes: a second device sending first configuration information, the first configuration information being used to indicate information about a first phase shift and a second phase shift. This scheme can indicate the first phase shift and the second phase shift information to the first device through the first configuration information.

[0021] In one possible implementation, the communication method provided in this application further includes: a second device receiving first information, the first information indicating M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first-frequency signals whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals of second-frequency signals whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme allows the first and second phase shifts to be determined by configuring the first phase-shift sequence.

[0022] In one possible implementation, the communication method provided in this application further includes: a second device receiving second information, the second information indicating the ratio of M to N, where M is the position of the first peak of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal sequentially measured by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme can determine the first phase shift and the second phase shift through the movement of the first device.

[0023] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0024] or,

[0025] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0026] In one possible implementation, the communication method provided in this application further includes: a second device acquiring first position information of a first device, motion direction information of the first device, position information of at least two reflecting devices that reflect a first sensing signal of a first frequency and a first sensing signal of a second frequency, or at least one of at least two second sensing signals of a first frequency and power information of each of the at least two second sensing signals of a second frequency, wherein the at least two reflecting devices include the first reflecting device; determining a second position of the first device based on the amplitude information of the interference signal, including: the second device determining the second position of the first device based on the amplitude information of the interference signal and at least one of the above. This scheme enables the second device to determine the second position of the first device based on the amplitude information of the interference signal, the first position information of the first device, the motion direction information of the first device, the position information of at least two reflecting devices that reflect a first sensing signal of a first frequency and a first sensing signal of a second frequency, or at least one of at least two second sensing signals of a first frequency and power information of each of the at least two second sensing signals of a second frequency, thereby improving the accuracy of position estimation.

[0027] In one possible implementation, the second device acquires the first position information and / or the motion direction information of the first device, including: the second device receiving the first position information and / or the motion direction information of the first device. In this scheme, by receiving the first position information and / or the motion direction information of the first device, the second device estimates a position that is determined based on the first position information and / or the motion direction information of the first device, thereby improving the accuracy of position estimation.

[0028] In one possible implementation, the second device acquires position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a second sensing signal at a second frequency, and / or, power information of at least two second sensing signals at first frequencies and each of the at least two second sensing signals at second frequencies. This includes the second device receiving the position information of the at least two reflecting devices that reflect the first sensing signal at the first frequency and the second sensing signal at the second frequency, and / or, power information of at least two second sensing signals at first frequencies and each of the at least two second sensing signals at second frequencies. In this scheme, by receiving the position information of the at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, power information of at least two second sensing signals at first frequencies and each of the at least two second sensing signals at second frequencies, the second device estimates a position that is determined based on the position information of the at least two reflecting devices that reflect the first sensing signal, and / or, power information of each of the at least two second sensing signals at second frequencies, thereby improving the accuracy of position estimation.

[0029] Thirdly, a communication method is provided, applicable to a first device. For example, it can be executed by the first device itself, or by components of the first device, such as its processor, chip, or chip system, or by a logic module or software capable of implementing all or part of the functions of the first device. Taking the execution of this method by the first device as an example, the method includes: the first device receiving first indication information, the first indication information indicating an interference pattern, the interference pattern being the spatial distribution of the amplitude of an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by the first reflecting device; the first device determining a second position of the first device based on the interference pattern.

[0030] The communication method provided in this application embodiment includes a first device receiving first indication information for indicating an interference pattern and determining a second position of the first device based on the interference pattern. The interference pattern is the spatial distribution of the amplitude of an interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by a first reflecting device. Since the interference pattern and the amplitude of the interference signal have a stable mapping relationship, the first device can determine its second position based on the interference pattern, thus improving the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of these second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of first frequency and a second phase shift on the first sensing signal of second frequency, this method can also determine the direction of movement of the first device.

[0031] In one possible implementation, the communication method provided in this application embodiment further includes: a first device receiving first configuration information, the first configuration information being used to indicate information about a first phase shift and a second phase shift. This scheme can indicate the first phase shift and the second phase shift information to the first device through the first configuration information.

[0032] In one possible implementation, the communication method provided in this application further includes: a first device sending first information, the first information indicating M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals of second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme allows the first and second phase shifts to be determined by configuring the first phase-shift sequence.

[0033] In one possible implementation, the communication method provided in this application further includes: a first device sending second information, the second information indicating the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme can determine the first phase shift and the second phase shift by the movement of the first device.

[0034] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0035] or,

[0036] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0037] In one possible implementation, the first indication information includes an interferogram; or, the first indication information includes at least one of the range, spatial period, or gradient direction of the interferogram. Wherein, the first indication information including an interferogram allows the first device to directly acquire the interferogram, simplifying the implementation on the first device side; the inclusion of at least one of the range, spatial period, or gradient direction of the interferogram simplifies the signaling transmission.

[0038] In one possible implementation, the communication method provided in this application embodiment further includes: the first device sending first position information of the first device, and / or, motion direction information of the first device. In this scheme, the first position information of the first device, and / or, motion direction information of the first device, can be used to adjust the power of the second sensing signal, thus further improving the accuracy of position estimation.

[0039] In one possible implementation, the communication method provided in this application embodiment further includes: a first device receiving and measuring an interference signal to obtain amplitude information of the interference signal; the first device determining a second position based on the interference pattern, including: the first device determining the second position based on at least one of the interference pattern and amplitude information of the interference signal, first position information of the first device, or motion direction information of the first device.

[0040] Fourthly, a communication method is provided, applicable to a second device. For example, it can be executed by the second device itself, or by components of the second device, such as its processor, chip, or chip system, or by a logic module or software capable of implementing all or part of the functions of the second device. Taking the execution by the second device as an example, the method includes: the second device sending first indication information, the first indication information indicating an interference pattern, the interference pattern being the spatial distribution of the amplitude of the interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by the first reflecting device.

[0041] The communication method provided in this application embodiment includes a second device transmitting first indication information for indicating an interference pattern. The interference pattern is the spatial distribution of the amplitude of an interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device. Since the interference pattern and the amplitude of the interference signal have a stable mapping relationship, the first device can determine its second position based on the interference pattern, thus improving the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of these second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of the first frequency and a second phase shift on the first sensing signal of the second frequency, this method can also determine the direction of motion of the first device.

[0042] In one possible implementation, the communication method provided in this application embodiment further includes: a second device sending first configuration information, the first configuration information being used to indicate information about a first phase shift and a second phase shift. This scheme can indicate the first phase shift and the second phase shift information to the first device through the first configuration information.

[0043] In one possible implementation, the communication method provided in this application further includes: a second device receiving first information, the first information indicating M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first-frequency signals whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals of second-frequency signals whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme allows the first and second phase shifts to be determined by configuring the first phase-shift sequence.

[0044] In one possible implementation, the communication method provided in this application further includes: a second device receiving second information, the second information indicating the ratio of M to N, where M is the position of the first peak of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal sequentially measured by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme can determine the first phase shift and the second phase shift through the movement of the first device.

[0045] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0046] or,

[0047] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0048] In one possible implementation, the first indication information includes an interferogram; or, the first indication information includes at least one of the range, spatial period, or gradient direction of the interferogram. Wherein, the first indication information including an interferogram can directly indicate the interferogram; the first indication information including at least one of the range, spatial period, or gradient direction of the interferogram can simplify the transmitted signaling.

[0049] In one possible implementation, the communication method provided in this application embodiment further includes: a second device receiving first position information of a first device, and / or, motion direction information of the first device. In this scheme, the first position information of the first device, and / or, the motion direction information of the first device, can be used to adjust the power of the second sensing signal, thus further improving the accuracy of position estimation.

[0050] In one possible implementation, the communication method provided in this application further includes: a second device acquiring position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency; the second device determining an interference pattern based on the position information of the at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency. This scheme provides a method for determining an interference pattern.

[0051] In one possible implementation, acquiring the position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency, includes: a second device receiving the position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency.

[0052] Fifthly, a communication method is provided, applicable to a first device. For example, it can be executed by the first device itself, or by a component of the first device, such as its processor, chip, or chip system, or by a logic module or software capable of implementing all or part of the functions of the first device. Taking the execution of this method by the first device as an example, the method includes: the first device receiving an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by a first reflecting device; the first device determining a second position of the first device based on the amplitude information of the interference signal.

[0053] The communication method provided in this application embodiment includes a first device receiving an interference signal and determining a second position of the first device based on the amplitude information of the interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device. Since the interference pattern corresponding to the interference signal has a stable mapping relationship with the amplitude of the interference signal, the position information of the first device can be determined based on the amplitude information determined by the interference signal, thus improving the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of the second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of the first frequency and a second phase shift on the first sensing signal of the second frequency, this method can also determine the direction of movement of the first device.

[0054] In one possible implementation, the communication method provided in this application embodiment further includes: a first device receiving first configuration information, the first configuration information being used to indicate information about a first phase shift and a second phase shift. This scheme can indicate the first phase shift and the second phase shift information to the first device through the first configuration information.

[0055] In one possible implementation, the communication method provided in this application further includes: a first device sending first information, the first information indicating M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals of second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme allows the first and second phase shifts to be determined by configuring the first phase-shift sequence.

[0056] In one possible implementation, the communication method provided in this application further includes: a first device sending second information, the second information indicating the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift. This scheme can determine the first phase shift and the second phase shift by the movement of the first device.

[0057] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0058] or,

[0059] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0060] In one possible implementation, the communication method provided in this application embodiment further includes: a first device measuring the interference signal and acquiring amplitude information of the interference signal. This solution provides a way to acquire amplitude information of the interference signal.

[0061] In one possible implementation, the first device determines its second position based on the amplitude information of the interference signal, including: the first device determining its second position based on the amplitude information of the interference signal and the position information of at least two reflecting devices that reflect the first sensing signal at a first frequency and the first sensing signal at a second frequency, the power information of the at least two second sensing signals at the first frequencies, or at least one of the first positions of the first device. This scheme enables the first device to determine its second position based on the amplitude information of the interference signal, including: the first device determining its second position based on the amplitude information of the interference signal and the position information of at least two reflecting devices that reflect the first sensing signal at a first frequency and the first sensing signal at a second frequency, the power information of the at least two second sensing signals at the first frequencies, or at least one of the first positions of the first device, thereby improving the accuracy of position estimation.

[0062] In one possible implementation, the communication method provided in this application further includes: a first device receiving position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency. This scheme enables the first device to acquire position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency, and then determine a second position of the first device based on the position information of the at least two reflecting devices that reflect the first sensing signal, and / or, the position information of the at least two reflecting devices that reflect the first sensing signal, thereby improving the accuracy of position estimation.

[0063] A sixth aspect provides a communication device, comprising: a transceiver module for receiving an interference signal, the interference signal including at least two second sensing signals of a first frequency and at least two second sensing signals of a second frequency, the at least two second sensing signals of the first frequency being obtained by reflecting the first sensing signals of the first frequency, the at least two second sensing signals of the second frequency being obtained by reflecting the first sensing signals of the second frequency, the at least two second sensing signals of the first frequency including a second sensing signal of the first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of the second frequency including a second sensing signal of the second frequency subjected to a second phase shift by a first reflecting device; the transceiver module is further configured to transmit a measurement report, the measurement report including amplitude information of the interference signal.

[0064] In one possible implementation, the transceiver module is further configured to receive first configuration information, which indicates information about the first phase shift and the second phase shift.

[0065] In one possible implementation, the transceiver module is further configured to transmit first information, which indicates M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals at first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals at second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device. The ratio of M to N is used to determine the first phase shift and the second phase shift.

[0066] In one possible implementation, the transceiver module is further configured to transmit second information, which indicates the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift.

[0067] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0068] or,

[0069] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0070] In one possible implementation, the processing module is also used to measure the interference signal and obtain the amplitude information of the interference signal.

[0071] In one possible implementation, the transceiver module is also used to transmit the first position information of the first device, and / or the motion direction information of the first device.

[0072] A seventh aspect provides a communication device, comprising: a transceiver module for receiving a measurement report, the measurement report including amplitude information of an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by a first reflecting device; a second device determining a second position of a first device based on the amplitude information of the interference signal; and a processing module for determining the second position of the first device based on the amplitude information of the interference signal.

[0073] In one possible implementation, the transceiver module is further configured to send first configuration information, which indicates information about the first phase shift and the second phase shift.

[0074] In one possible implementation, the transceiver module is further configured to receive first information, which indicates M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals at first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals at second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device. The ratio of M to N is used to determine the first phase shift and the second phase shift.

[0075] In one possible implementation, the transceiver module is further configured to receive second information, which indicates the ratio of M to N, where M is the position of the first peak of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift.

[0076] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0077] or,

[0078] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0079] In one possible implementation, the processing module is further configured to acquire first position information of the first device, motion direction information of the first device, position information of at least two reflecting devices that reflect the first sensing signal at a first frequency and the first sensing signal at a second frequency, or at least one of the power information of each of the at least two second sensing signals at a first frequency and the at least two second sensing signals at a second frequency, wherein the at least two reflecting devices include the first reflecting device; determining the second position of the first device based on the amplitude information of the interference signal includes: the second device determining the second position of the first device based on the amplitude information of the interference signal and at least one of the above.

[0080] In one possible implementation, the second device acquires the first position information of the first device and / or the motion direction information of the first device, including: the second device receiving the first position information of the first device and / or the motion direction information of the first device.

[0081] In one possible implementation, the processing module is further configured to acquire position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency, including: the transceiver module is further configured to receive position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency.

[0082] Eighthly, a communication device is provided, comprising: a transceiver module for receiving first indication information, the first indication information being used to indicate an interference pattern, the interference pattern being the spatial distribution of the amplitude of an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by a first reflecting device; and a processing module for determining a second position of a first device based on the interference pattern.

[0083] In one possible implementation, the transceiver module is further configured to receive first configuration information, which indicates information about the first phase shift and the second phase shift.

[0084] In one possible implementation, the transceiver module is further configured to transmit first information, which indicates M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals at first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals at second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device. The ratio of M to N is used to determine the first phase shift and the second phase shift.

[0085] In one possible implementation, the transceiver module is further configured to transmit second information, which indicates the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift.

[0086] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0087] or,

[0088] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0089] In one possible implementation, the first indication information includes an interferometric pattern; or, the first indication information includes at least one of the following: the range of the interferometric pattern, its spatial period, or its gradient direction.

[0090] In one possible implementation, the communication method provided in this application embodiment further includes: the first device sending first position information of the first device, and / or, motion direction information of the first device.

[0091] In one possible implementation, the transceiver module is further configured to receive and measure the interference signal and obtain the amplitude information of the interference signal; the first device determines the second position of the first device according to the interference pattern, including: the first device determines the second position of the first device according to at least one of the interference pattern and the amplitude information of the interference signal, the first position information of the first device, or the motion direction information of the first device.

[0092] A ninth aspect provides a communication device, comprising: a transceiver module for transmitting first indication information, the first indication information being used to indicate an interference pattern, the interference pattern being the spatial distribution of the amplitude of an interference signal, the interference signal including at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies, the at least two second sensing signals of first frequencies being obtained by reflecting the first sensing signals of first frequencies, the at least two second sensing signals of second frequencies being obtained by reflecting the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies including a second sensing signal of first frequency subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies including a second sensing signal of second frequency subjected to a second phase shift by a first reflecting device.

[0093] In one possible implementation, the transceiver module is further configured to send first configuration information, which indicates information about the first phase shift and the second phase shift.

[0094] In one possible implementation, the transceiver module is further configured to receive first information, which indicates M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals at first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals at second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device. The ratio of M to N is used to determine the first phase shift and the second phase shift.

[0095] In one possible implementation, the transceiver module is further configured to receive second information, which indicates the ratio of M to N, where M is the position of the first peak of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift.

[0096] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0097] or,

[0098] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0099] In one possible implementation, the first indication information includes an interferometric pattern; or, the first indication information includes at least one of the range, spatial period, or gradient direction of the interferometric pattern.

[0100] In one possible implementation, the transceiver module is further configured to receive first position information of the first device, and / or, motion direction information of the first device.

[0101] In one possible implementation, the processing module is further configured to acquire position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, power information of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals; the second device determines the interference pattern based on the position information of the at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and the power information of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals.

[0102] In one possible implementation, the processing module is further configured to acquire position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency, including: the transceiver module is further configured to receive position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency.

[0103] In a tenth aspect, a communication device is provided, comprising: a transceiver module for receiving an interference signal including at least two second sensing signals of at least two first frequencies and at least two second sensing signals of second frequencies, wherein the at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies, wherein the at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has been phase-shifted by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has been phase-shifted by a first reflecting device; and a processing module for determining a second position of a first device based on amplitude information of the interference signal.

[0104] In one possible implementation, the transceiver module is further configured to receive first configuration information, which indicates information about the first phase shift and the second phase shift.

[0105] In one possible implementation, the transceiver module is further configured to transmit first information, which indicates M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first-frequency second sensing signals and a second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals at first frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals at second frequencies whose N phases in the first phase-shift sequence are sequentially phase-shifted by a first reflection device. The ratio of M to N is used to determine the first phase shift and the second phase shift.

[0106] In one possible implementation, the transceiver module is further configured to transmit second information, which indicates the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein the ratio of M to N is used to determine the first phase shift and the second phase shift.

[0107] In one possible implementation, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0108] or,

[0109] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0110] In one possible implementation, the processing module is also used to measure the interference signal and obtain its amplitude information. This scheme provides a method for obtaining the amplitude information of the interference signal.

[0111] In one possible implementation, the processing module is further configured to determine a second position of the first device based on the amplitude information of the interference signal, including: the first device determining a second position based on the amplitude information of the interference signal and position information of at least two reflecting devices that reflect a first sensing signal of a first frequency and a first sensing signal of a second frequency, the power information of at least two second sensing signals of the first frequency and each of the at least two second sensing signals of the second frequency, or at least one of the first positions of the first device. This scheme enables the first device to determine a second position based on the amplitude information of the interference signal, including: the first device determining a second position based on the amplitude information of the interference signal and position information of at least two reflecting devices that reflect a first sensing signal of a first frequency and a first sensing signal of a second frequency, the power information of at least two second sensing signals of the first frequency and each of the at least two second sensing signals of the second frequency, or at least one of the first positions of the first device, thereby improving the accuracy of position estimation.

[0112] In one possible implementation, the transceiver module is further configured to receive position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or, the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency. This scheme enables the first device to acquire the position information of at least two reflecting devices that reflect a first sensing signal at a first frequency and a first sensing signal at a second frequency, and / or, the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency, and then determine a second position of the first device based on the position information of the at least two reflecting devices that reflect the first sensing signal, and / or, the position information of the at least two reflecting devices that reflect the first sensing signal, thereby improving the accuracy of position estimation.

[0113] Eleventhly, a communication device is provided for implementing the various methods described above. The communication device may be a first device as described in the first, third, or fifth aspects, or a device included in the first device, such as a chip; or, the communication device may be a second device as described in the second or fourth aspects, or a device included in the second device, such as a chip.

[0114] The communication device includes modules, units, or means that implement the methods described above. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions described above.

[0115] In some possible designs, the communication device may include a processing module and a communication module. The communication module may include an output module (or transmitting module) and an input module (or receiving module), respectively used to implement the output (or transmitting) and input (or receiving) functions in any of the above aspects and any possible designs. The processing module can be used to implement the processing functions in any of the above aspects and any possible designs.

[0116] Optionally, the communication device also includes a storage module for storing program instructions and data.

[0117] In a twelfth aspect, a communication device is provided, comprising: at least one processor configured to execute computer programs or instructions, or to cause the communication device to perform the methods of any of the preceding aspects via logic circuitry. The communication device may be a first device according to the first aspect, or the third aspect, or the fifth aspect, or a device included in the first device, such as a chip; or, the communication device may be a second device according to the second aspect, or the fourth aspect, or a device included in the second device, such as a chip.

[0118] In some possible designs, the communication device also includes a memory for storing configuration files of computer instructions and / or logic circuits. Optionally, the memory is integrated with the processor, or the memory is independent of the processor.

[0119] In one possible design, the communication device also includes a communication interface for inputting and / or outputting signals.

[0120] In some possible designs, the communication interface is an interface circuit used to read and write computer instructions. For example, the interface circuit is used to receive computer execution instructions (which are stored in memory and may be read directly from memory or may be transmitted through other devices) and transmit them to the processor.

[0121] In some possible designs, this communication interface is used to communicate with modules outside the communication device.

[0122] In some possible designs, the communication device can be a chip system. When the communication device is a chip system, the chip system may include chips, or it may contain chips and other discrete components.

[0123] In a thirteenth aspect, a communication device is provided, comprising: a logic circuit and an interface circuit; the interface circuit being used for inputting information and / or outputting information; the logic circuit being used to perform the method of any of the preceding aspects, processing the input information and / or generating output information. The communication device may be a first device according to the first aspect, or the third aspect, or the fifth aspect, or a device included in the first device, such as a chip; or, the communication device may be a second device according to the second aspect, or the fourth aspect, or a device included in the second device, such as a chip.

[0124] It is understood that when the communication device provided by any of the sixth to eighth aspects is a chip, the aforementioned sending action / function can be understood as output information, and the aforementioned receiving action / function can be understood as input information.

[0125] In a fourteenth aspect, a computer-readable storage medium is provided that stores a computer program or instructions that, when executed by a processor, cause the methods of any of the above aspects to be performed.

[0126] In a fifteenth aspect, a computer program product is provided that, when executed by a processor, causes the method of any of the above aspects to be performed.

[0127] In a sixteenth aspect, a communication device is provided, the communication device including a module / unit for performing the methods of the first or second aspect described above, or the communication device including a module / unit for performing the methods of the third or fourth aspect described above, or the communication device including a module / unit for performing the methods of the fifth aspect described above.

[0128] In a seventeenth aspect, a communication system is provided, comprising a first device as described in the first, third, or fifth aspect, and a second device as described in the second aspect, or fourth aspect. The first and second devices can implement the communication device provided in any one of the eleventh to thirteenth aspects.

[0129] The technical effects of any of the design methods in aspects eleven through seventeen can be found in the technical effects of different design methods in aspects one through five mentioned above, and will not be repeated here. Attached Figure Description

[0130] Figure 1 is a schematic diagram of sensing used for micro-deformation detection;

[0131] Figure 2 is a schematic diagram of synthetic aperture environmental imaging technology based on motion terminal devices;

[0132] Figure 3 is a flowchart of the phase gradient self-focusing algorithm based on strong scattering points;

[0133] Figure 4 is a schematic diagram of an application scenario for a data-based motion error calibration method.

[0134] Figure 5 is a schematic diagram of another application scenario of the data-based motion error calibration method;

[0135] Figure 6 is a schematic diagram of the communication system provided in an embodiment of this application;

[0136] Figure 7 is a schematic diagram of the application scenario provided in the embodiments of this application;

[0137] Figure 8 is a structural schematic diagram of the communication device 800 provided in an embodiment of this application;

[0138] Figure 9 is a schematic diagram of an example of the communication method provided in an embodiment of this application;

[0139] Figure 10 is a schematic diagram of another example of the communication method provided in the embodiments of this application;

[0140] Figure 11 is a schematic diagram of yet another example of the communication method provided in the embodiments of this application;

[0141] Figure 12 is a schematic diagram of an example of a simulation scenario provided in an embodiment of this application;

[0142] Figure 13 is a schematic diagram of an example top view of a simulation scene provided in an embodiment of this application;

[0143] Figure 14 is a distribution diagram of the amplitude of the received signals at two frequency points using a terminal device with a configuration in the XY plane (Z is 1.5 meters).

[0144] Figure 15 is a distribution diagram of the interference signal provided in an embodiment of this application;

[0145] Figure 16 is a schematic diagram of the interference pattern corresponding to configuration two provided in the embodiments of this application;

[0146] Figure 17 is a graph showing the amplitude variation of the interference signal received by the terminal device with configuration two according to an embodiment of this application;

[0147] Figure 18 is a schematic diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0148] In the description of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is merely a description of the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural.

[0149] In the description of this application, unless otherwise stated, "multiple" means two or more. "At least one of the following or similar expressions" refers to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and / or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0150] Furthermore, to facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0151] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0152] It is understood that the term "embodiment" used throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, various embodiments throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0153] It is understood that in this application, "...when" and "if" both refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a specific time, nor do they require a judgment action to be performed during implementation, nor do they imply any other limitations.

[0154] It is understood that some optional features in the embodiments of this application can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the apparatus given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.

[0155] In the embodiments of this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of this application.

[0156] The relevant technologies involved in the embodiments of this application will be briefly introduced below.

[0157] I. Micro-variable detection.

[0158] Figure 1 is a schematic diagram of sensing used for micro-deformation detection. As shown in Figure 1, in micro-deformation monitoring, minute changes in the distance between the base station antenna and the target are detected to detect minute deformations of the target. Here, it is necessary to accurately know the positional error caused by the shaking of the base station antenna itself in order to obtain accurate micro-deformation monitoring results. Typical applications include bridge vibration and deformation monitoring, and high-rise building deformation monitoring.

[0159] II. Synthetic Aperture Environment Imaging Based on Motion Terminal Devices.

[0160] Figure 2 is a schematic diagram of synthetic aperture environmental imaging technology based on a motion-terminal device. As shown in Figure 2, in synthetic aperture environmental imaging based on a motion-terminal device, the position of each virtual element forming the synthetic aperture needs to be precisely known to support high-quality imaging results. If the positional error caused by the motion of the terminal device cannot be properly eliminated, it may cause image defocusing, distortion, or even failure to form an image.

[0161] III. Motion error calibration method based on inertial measurement unit (IMU) (hereinafter referred to as inertial navigation unit).

[0162] The principle of this method is that the inertial navigation unit measures the acceleration of the antenna platform (base station or terminal equipment) during vibration or motion, and then estimates the position error of the antenna phase center caused by vibration or motion after smoothing, integration and other processing based on the acceleration.

[0163] IV. Data-based motion error calibration methods.

[0164] The principle of data-based motion error calibration is that after the sensing system collects data, it uses a specific algorithm based on the reference point information contained in the data to calibrate the position error of the antenna phase center caused by motion. A typical algorithm includes the phase gradient autofocus (PGA) algorithm based on strong scattering points. The signal processing flow of this algorithm is shown in Figure 3.

[0165] Data-based motion error calibration methods have requirements for data characteristics, such as the presence of strong scattering points, as shown in Figures 4 and 5, which limits their application scenarios.

[0166] Based on the aforementioned related technologies, it is known that the accuracy of location estimation in existing methods is not high enough. Therefore, this application provides a communication method that can improve the accuracy of location estimation, which will be described in detail below.

[0167] Figure 6 is a schematic diagram of a communication system provided in an embodiment of this application. As shown in Figure 6, the communication system includes a first device and a second device.

[0168] In one possible implementation, a first device is used to receive the interference signal and send a measurement report. A second device is used to receive the measurement report and determine a second position of the first device based on the amplitude information of the interference signal.

[0169] The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device. The measurement report includes amplitude information of the interference signal.

[0170] In another possible implementation, a first device is used to receive first instruction information and determine a second position of the first device based on an interferogram. A second device is used to transmit the first instruction information.

[0171] Wherein, the first indication information is used to indicate the interference pattern, the interference pattern being the spatial distribution of the amplitude of the interference signal, the interference signal including at least two second sensing signals of first frequency and at least two second sensing signals of second frequency, the at least two second sensing signals of first frequency being obtained by reflecting the first sensing signals of first frequency, the at least two second sensing signals of second frequency being obtained by reflecting the first sensing signals of second frequency, the at least two second sensing signals of first frequency including a second sensing signal of first frequency that has undergone a first phase shift by the first reflecting device, and the at least two second sensing signals of second frequency including a second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device.

[0172] In another possible implementation, a first device is used to receive an interference signal and determine a second position of the first device based on the amplitude information of the interference signal. A second device is used to transmit a first sensing signal at a first frequency and a first sensing signal at a second frequency.

[0173] Wherein, the interference pattern is the spatial distribution of the amplitude of the interference signal, the interference signal includes at least two second sensing signals of a first frequency and at least two second sensing signals of a second frequency, the at least two second sensing signals of the first frequency are obtained by reflecting the first sensing signals of the first frequency, the at least two second sensing signals of the second frequency are obtained by reflecting the first sensing signals of the second frequency, the at least two second sensing signals of the first frequency include a second sensing signal of the first frequency that has been phase-shifted by a first reflecting device, and the at least two second sensing signals of the second frequency include a second sensing signal of the second frequency that has been phase-shifted by the first reflecting device.

[0174] In this embodiment of the application, the first device can be a terminal device, and the second device can be a network device, or the first device can be a network device and the second device can be a terminal device.

[0175] Figure 7 is a schematic diagram of the application scenarios provided by the embodiments of this application. As shown in Figure 7, the communication method provided by the embodiments of this application can be applied to four scenarios. Taking at least two second sensing signals of first frequency or at least two second sensing signals of second frequency as two second sensing signals as examples, the following will describe them respectively.

[0176] Scenario 1: A network device sends a first sensing signal at a first frequency and a second sensing signal at a second frequency. The first sensing signal at the first frequency is reflected by a first reflection device and a second reflection device, respectively, to generate two second sensing signals at the first frequency. The first sensing signal at the second frequency is reflected by a first reflection device and a second reflection device, respectively, to generate two second sensing signals at the second frequency. The terminal device receives an interference signal including the two second sensing signals at the first frequency and the two second sensing signals at the second frequency.

[0177] Scenario 2: The terminal device sends a first sensing signal at a first frequency and a second sensing signal at a second frequency. The first sensing signal at the first frequency is reflected by the first reflection device and the second reflection device, respectively, to generate two second sensing signals at the first frequency. The first sensing signal at the second frequency is reflected by the first reflection device and the second reflection device, respectively, to generate two second sensing signals at the second frequency. The network device receives an interference signal including the two second sensing signals at the first frequency and the two second sensing signals at the second frequency.

[0178] Scenario 3: The network device itself acts as the first reflection device. The network device sends a first sensing signal at a first frequency and a first sensing signal at a second frequency. The first sensing signal at the first frequency and the first sensing signal at the second frequency pass through the second reflection device. The terminal device receives an interference signal including two second sensing signals at the first frequency and two second sensing signals at the second frequency. Among the two second sensing signals (the first sensing signal at the first frequency and the second sensing signal at the second frequency), one of the second sensing signals is the first sensing signal sent by the network device (the first sensing signal at the first frequency and the first sensing signal at the second frequency).

[0179] Scenario 4: The terminal device itself acts as the first reflection device. The terminal device sends a first sensing signal at a first frequency and a first sensing signal at a second frequency. The first sensing signal at the first frequency and the first sensing signal at the second frequency pass through the second reflection device. The network device receives an interference signal including two second sensing signals at the first frequency and two second sensing signals at the second frequency. Among the two second sensing signals (the first frequency and the second frequency second sensing signals), one of the second sensing signals is the first sensing signal (the first frequency and the second frequency first sensing signal) sent by the terminal device.

[0180] Optionally, the technical solutions provided in this application can be applied to fourth-generation (4G) mobile communication technology systems, fifth-generation (5G) mobile communication technology systems, NTN systems, vehicle to everything (V2X), LTE-vehicle (LTE-V), vehicle to vehicle (V2V), vehicle-to-everything (V2X), machine-type communications (MTC), internet of things (IoT), LTE-machine to machine (LTE-M), machine to machine (M2M), or future mobile communication systems such as future communication networks, etc. This application does not specifically limit these applications.

[0181] Optionally, the terminal equipment involved in the embodiments of this application may be user equipment (UE), access terminal, terminal unit, user station, terminal station, mobile station, mobile station, remote station, remote terminal, user terminal equipment (TE), mobile device, wireless communication device, terminal agent, tablet computer, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, vehicle-mounted transceiver unit, wearable device, or terminal device in a 4G network, 5G network, or a public land mobile network (PLMN) evolved after 5G. The access terminal may be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, drone, robot, point of sale (POS) machine, customer-premises equipment (CPE), or wearable device, virtual reality (VR) device. Wireless terminals can be categorized into various types, including VR (Augmented Reality) terminal devices, AR terminal devices, wireless terminals in industrial control, self-driving, remote medical, smart grid, transportation safety, smart city, and smart home terminals. Alternatively, terminals can be communication-enabled devices within the Internet of Things (IoT), such as terminals in V2X (e.g., vehicle-to-everything (V2X) communication), device-to-device (D2D) communication, or machine-to-machine (M2M) communication. Terminals can be mobile or fixed.

[0182] Optionally, the network equipment involved in the embodiments of this application can be access network equipment, such as evolved base stations (NodeBs, eNBs, or e-NodeBs) in long term evolution (LTE) or enhanced LTE (LTE-A) systems, such as traditional macro base stations (eNBs) and micro base stations (eNBs) in heterogeneous network scenarios. Alternatively, it can include next-generation node Bs (gNBs) in new radio (NR) systems. Or, it can include transmission reception points (TRPs), home base stations (e.g., home evolved NodeBs, or home Node Bs, HNBs), base band units (BBUs), base band pools (BBU pools), or wireless fidelity (WiFi) access points (APs), etc. Alternatively, it can include base stations in non-terrestrial networks (NTNs), i.e., those deployed on flight platforms or satellites. In an NTN, network devices or access devices can act as Layer 1 (L1) relays, base stations, or integrated access and backhaul (IAB) nodes. Alternatively, the network devices in this application embodiment can be devices implementing base station functions in IoT, such as devices implementing base station functions in drone communication, V2X, D2D, or M2M.

[0183] In some possible scenarios, the network device in this application embodiment can also be a module or unit capable of implementing some functions of a base station. For example, the network device can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and DU can be set up separately, or they can be included in the same network element, such as in a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0184] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, a network device can be a network device or a module of a network device in an Open Radio Access Network (ORAN) system. In an ORAN system, CU can also be called open (O)-CU, DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through a software module, a hardware module, or a combination of a software module and a hardware module.

[0185] Optionally, the base station in the embodiments of this application may include various forms of base stations, such as: macro base station, micro base station (also known as small station), relay station, access point, home base station, transmission and receiving point (TRP), transmitting point (TP), mobile switching center, etc. The embodiments of this application do not specifically limit this.

[0186] It should be noted that the communication system described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0187] Optionally, the functions of the network devices and terminal devices involved in the embodiments of this application can be implemented by one device, or by multiple devices, or by one or more functional modules within one device, or by one or more chips, or by a system on a chip (SOC) or a chip system. A chip system can be composed of chips or include chips and other discrete devices. The embodiments of this application do not specifically limit this.

[0188] It is understood that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, a combination of hardware and software, or virtualization functions instantiated on a platform (e.g., a cloud platform).

[0189] For example, the functions of the network devices and terminal devices involved in this application can be implemented by the communication device 800 in FIG8. FIG8 is a schematic diagram of the structure of the communication device 800 provided in an embodiment of this application. The communication device 800 includes one or more processors 811. The processor 811 can be a general-purpose processor or a special-purpose processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (e.g., network device, terminal device, or chip, etc.), execute software programs, and process data of the software programs.

[0190] Optionally, in one design, the processor 811 may include a program 813 (sometimes referred to as code or instructions) that can be run on the processor 811 to cause the communication device 800 to perform the methods described in the following embodiments.

[0191] Optionally, the communication device 800 may include one or more memories 812 storing a program 814 (sometimes referred to as code or instructions), which can be run on the processor 811 to cause the communication device 800 to perform the methods described in the following method embodiments.

[0192] Optionally, the processor 811 and / or memory 812 may include artificial intelligence (AI) modules 817 and 818, which are used to implement AI-related functions. The AI ​​modules can be implemented through software, hardware, or a combination of both. For example, the AI ​​module may include a RAN intelligence controller (RIC) module. For example, the AI ​​module may be a near real-time RIC or a non-real-time RIC.

[0193] Optionally, the processor 811 and / or memory 812 may also store data. The processor and memory may be configured separately or integrated together.

[0194] Optionally, the communication device 800 may further include a transceiver 815 and / or an antenna 816. The processor 811, sometimes referred to as a processing unit, controls the communication device (e.g., a network device or a terminal device). The transceiver 815, sometimes referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, is used to realize the transmission and reception functions of the communication device through the antenna 816.

[0195] Optionally, in this embodiment, the processor 811 is a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 811 can also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0196] Optionally, in the embodiments of this application, the memory 812 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions; it may also be a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions; it may also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0197] Although not shown, as an optional implementation, the communication device 800 may also include output devices and input devices. For example, input devices may be devices such as a keyboard, mouse, microphone, or joystick, and output devices may be devices such as a display screen or speaker.

[0198] It should be noted that the communication device 800 can be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device with a similar structure to that shown in Figure 8. Furthermore, the composition shown in Figure 8 does not constitute a limitation on the communication device. In addition to the components shown in Figure 8, the communication device may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0199] In this embodiment of the application, the chip system may be composed of chips or may include chips and other discrete devices.

[0200] The communication method provided in the embodiments of this application will now be described in conjunction with the communication system shown in Figure 6 and the application scenario shown in Figure 7.

[0201] It should be noted that in the following embodiments of this application, the message names between network elements, the names of each parameter, or the names of each piece of information are just examples. Other names may also be used in other embodiments, and the method provided in this application does not specifically limit them.

[0202] It is understood that in the embodiments of this application, each network element may execute some or all of the steps in the embodiments of this application. These steps or operations are merely examples, and the embodiments of this application may also execute other operations or variations thereof. Furthermore, the steps may be executed in different orders as presented in the embodiments of this application, and it is not necessary to execute all the operations in the embodiments of this application.

[0203] Figure 9 is a schematic diagram of an example of the communication method provided in an embodiment of this application. The method is illustrated using the interaction between a first device and a second device as an example. Of course, the entity executing the action of the first device in this method can also be a device / module of the first device, such as a chip, processor, or processing unit in the first device; similarly, the entity executing the action of the second device in this method can also be a device / module of the second device, such as a chip, processor, or processing unit in the second device. This embodiment of the application does not specifically limit this. For example, as shown in Figure 9, method 900 includes:

[0204] S910, the second device transmits a first sensing signal at a first frequency and a first sensing signal at a second frequency. Correspondingly, the first device receives the interference signal.

[0205] In this embodiment, the interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. It should be noted that, due to the high speed of light, the at least two second sensing signals of first frequencies are received almost simultaneously at the first device. Therefore, the first frequency signal received by the first device is a superposition of the at least two first frequency second sensing signals. The first device cannot distinguish each of the at least two first frequency second sensing signals; it can only receive the superimposed signal. Similarly, the second frequency signal received by the first device is a superposition of the at least two second frequency second sensing signals. That is, the first device can receive both first and second frequency signals, and can distinguish the frequencies of the signals, but cannot distinguish each signal within the received signals of the same frequency.

[0206] In this embodiment of the application, at least two second sensing signals of second frequencies include a second sensing signal of first frequency that undergoes a first phase shift on the first reflecting device, and at least two second sensing signals of second frequencies include a second sensing signal of second frequency that undergoes a second phase shift on the first reflecting device.

[0207] The reflection process is illustrated using an example of at least two second sensing signals of the first frequency and at least two second sensing signals of the second frequency. Corresponding to scenarios one and two in Figure 7, the second device sends a first sensing signal of the first frequency f1 and a first sensing signal of the second frequency f2. These signals reach two reflecting devices. One reflecting device reflects both the first sensing signal of the first frequency f1 and the first sensing signal of the second frequency f2, resulting in the second sensing signal of the first frequency f1 and the second sensing signal of the second frequency f2 being reflected. The other reflecting device performs a first phase shift on the first sensing signal of the first frequency f1 and a second phase shift on the first sensing signal of the second frequency f2, resulting in the second sensing signal of the first frequency f1 and the second sensing signal of the second frequency f2 being reflected. Subsequently, the interference signal is received by the first device.

[0208] The descriptions of scenarios three and four in Figure 7 are similar, and will not be repeated here in the embodiments of this application.

[0209] The reflection involved in the embodiments of this application can be active reflection or passive reflection. The embodiments of this application do not limit this. Through the reflection of the reflection device, at least two stable and coherent second sensing signals can be generated.

[0210] In this embodiment of the application, the first sensing signal includes signals at two frequencies, such as an orthogonal frequency division multiplexing (OFDM) signal in the 3.5 GHz band that includes two subcarriers spaced 10 MHz apart.

[0211] S920, the first device sends a measurement report to the second device. Correspondingly, the second device receives the measurement report from the first device.

[0212] In this embodiment of the application, the measurement report includes amplitude information of the interference signal. The amplitude information of the interference signal includes or indicates an interference pattern, which is the spatial distribution of the amplitude of the interference signal.

[0213] S930, the second device determines the second position of the first device based on the amplitude information of the interference signal.

[0214] In this embodiment of the application, the amplitude information of the interference signal has a stable mapping relationship with the second position of the first device, so the second device can determine the second position of the first device based on the amplitude information of the interference signal.

[0215] Optionally, the communication method provided in this application embodiment further includes: the second device sending first configuration information to the first device. Correspondingly, the first device receives the first configuration information from the second device. The first configuration information is used to indicate information about a first phase shift and a second phase shift. This scheme allows the first device to obtain information about the first and second phase shifts through the first configuration information, and then determine the second position of the first device based on the information about the first and second phase shifts.

[0216] Alternatively, the first and second phase shifts in the embodiments of this application are pre-configured, which can save the overhead of configuration information.

[0217] Optionally, in one possible implementation, the communication method provided in this application embodiment further includes: the first device sending first information to the second device. Correspondingly, the second device receives the first information from the first device. In this application embodiment, the first information is used to indicate M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first frequencies of second sensing signals and a second amplitude sequence of at least two second frequencies of second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first frequencies whose N phases in the first phase shift sequence are sequentially phase-shifted by the first reflection device, and the second amplitude sequence includes the amplitudes of second sensing signals of second frequencies whose N phases in the first phase shift sequence are sequentially phase-shifted by the first reflection device; wherein, the ratio of M to N is used to determine the first phase shift and the second phase shift. N and M are both positive integers greater than 1.

[0218] For example, the process for determining M and N is as follows:

[0219] Step 1: The second device configures the first phase shift sequence for the first reflecting device. For example, the first phase shift sequence can be {0,Δφ,2Δφ,…,2π}, where the length of the first phase shift sequence is N.

[0220] Step Two: The first reflecting device sequentially phase-shifts each received first sensing signal of the first frequency according to the first phase-shift sequence, and sequentially phase-shifts each received first sensing signal of the second frequency according to the first phase-shift sequence. After reflection by the first reflecting device and other reflecting devices, the first device sequentially receives interference signals including at least two second sensing signals of the first frequency and at least two second sensing signals of the second frequency. Through each measurement, the first device determines the first amplitude sequence corresponding to the signal amplitude of the received first frequency signal (e.g., ...). And the second amplitude sequence corresponding to the signal amplitude of the received second frequency signal (e.g.: The lengths of both the first amplitude sequence and the second amplitude sequence are N.

[0221] Step 3: The first device performs cyclic shift correlation calculations on the first amplitude sequence and the second amplitude sequence to obtain the position M of the first peak of the cyclic shift result.

[0222] It should be noted that the position of the first device in this process can be basically stationary.

[0223] Optionally, in another possible implementation, the communication method provided in this application embodiment further includes: the first device sending second information to the second device. Correspondingly, the second device receives the second information from the first device. In this application embodiment, the second information is used to indicate the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal sequentially measured by the movement of the first device; wherein, the ratio of M to N is used to determine the first phase shift and the second phase shift.

[0224] For example, the process for determining M and N is as follows:

[0225] Step 1: While the first device is in motion, the first device sequentially measures at least two second sensing signals of the first frequency and at least two second sensing signals of the second frequency received to obtain a first amplitude sequence (e.g.: Second amplitude sequence (e.g.:

[0226] Step 2: The first device performs cyclic shift correlation calculations on the first amplitude sequence and the second amplitude sequence to obtain the position M and period N of the first peak of the cyclic shift result.

[0227] It should be noted that the first device can move at a constant speed or a non-consistent speed, and the embodiments of this application do not limit this.

[0228] Optionally, in the embodiments of this application, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0229] or,

[0230] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0231] Optionally, the communication method provided in this application embodiment further includes: the second device acquiring the first position information of the first device, the motion direction information of the first device, the position information of at least two reflecting devices that reflect the first sensing signal of the first frequency and the first sensing signal of the second frequency, or at least one of the power information of each of the at least two second sensing signals of the first frequency and the at least two second sensing signals of the second frequency.

[0232] The second device determines the second position of the first device based on the amplitude information of the interference signal, including: the second device determining the second position of the first device based on the amplitude information of the interference signal, the first position information of the first device, the motion direction information of the first device, the position information of at least two reflecting devices that reflect the first sensing signal at a first frequency and the first sensing signal at a second frequency, or at least one of the power information of at least two second sensing signals at a first frequency and at least two second sensing signals at a second frequency. The at least two reflecting devices include the first reflecting device.

[0233] Optionally, the communication method provided in this application embodiment further includes: the first device sending its position information and / or its motion direction information to the second device. Correspondingly, the second device receives the first position information and / or its motion direction information from the first device. Wherein, corresponding to the above embodiment, the second device obtaining the first position information and / or its motion direction information includes: the second device receiving the first position information and / or its motion direction information from the first device.

[0234] Optionally, the first position information of the first device and / or the motion direction information of the first device are obtained by the second device through other means. For example, the first position information of the first device and / or the motion direction information of the first device can be determined by the method provided in the embodiments of this application, and the embodiments of this application do not limit this.

[0235] Optionally, the communication method provided in this application embodiment further includes: at least two reflecting devices sending their own position information and / or, power information of the second sensing signals of the first and second frequencies corresponding to themselves to the second device. Correspondingly, the second device receives position information from at least two reflecting devices that reflect the first sensing signals of the first and second frequencies, and / or, power information of each of the at least two second sensing signals of the first and second frequencies. Wherein, corresponding to the above embodiment, the second device acquiring the position information of at least two reflecting devices that reflect the first sensing signals of the first and second frequencies, or, at least two second sensing signals of the first and second frequencies and power information of each of the at least two second sensing signals of the second frequencies, includes: the second reflecting device receiving the position information of at least two reflecting devices that reflect the first sensing signals of the first and second frequencies, or, at least two second sensing signals of the first and second frequencies and power information of each of the at least two second sensing signals of the second frequencies.

[0236] Optionally, the position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, or the power information of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals, can be obtained by the second device in other ways. For example, the position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, or the power information of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals, can be predefined. This application embodiment does not limit this.

[0237] It should be noted that the power of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals is adjustable and is independent of the power of the first sensing signals at the first frequency and the first sensing signals at the second frequency. For example, the power of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals can be adjusted by an amplifier with at least two reflective devices. This application does not limit this aspect.

[0238] Optionally, the communication method provided in this application embodiment further includes: the second device sending a sensing request to the first device. Correspondingly, the first device receives the sensing request from the second device.

[0239] Optionally, the communication method provided in this application embodiment further includes: the second device sending a sensing request to each of the at least two reflecting devices. Correspondingly, each of the at least two reflecting devices receives the sensing request from the second device.

[0240] In this embodiment of the application, the first position of the first device can be the overall position of the first device, or the global pattern of the first device, or the approximate position of the first device. The second position of the first device can be the local position of the first device, or the fine variation of the first device.

[0241] The communication method provided in this application embodiment involves a first device receiving an interference signal and transmitting a measurement report including amplitude information of the interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include one second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include one second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device. Since the interference pattern corresponding to the interference signal has a stable mapping relationship with the amplitude of the interference signal, including amplitude information determined based on the interference signal in the measurement report can determine the position information of the first device and improve the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of the second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of first frequency and a second phase shift on the first sensing signal of second frequency, this method can also determine the operating direction of the first device.

[0242] Figure 10 is a schematic diagram of another example of the communication method provided in this application embodiment. The method is illustrated using the interaction between a first device and a second device as an example. Of course, the entity executing the action of the first device in this method can also be a device / module of the first device, such as a chip, processor, or processing unit in the first device; similarly, the entity executing the action of the second device in this method can also be a device / module of the second device, such as a chip, processor, or processing unit in the second device. This application embodiment does not specifically limit this. For example, as shown in Figure 10, method 1000 includes:

[0243] S1010, the second device sends a first instruction message to the first device. Correspondingly, the first device receives the first instruction message from the second device.

[0244] In this embodiment of the application, the first indication information is used to indicate the interference pattern, which is the spatial distribution of the amplitude of the interference signal.

[0245] In this embodiment, the interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. For relevant descriptions and examples of the first sensing signals of first frequencies, the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies, and the at least two second sensing signals of second frequencies, please refer to the description in method 900; these will not be repeated here.

[0246] In this embodiment, the at least two second sensing signals of the second frequency include a second sensing signal of the first frequency that undergoes a first phase shift on the first reflecting device, and the at least two second sensing signals of the second frequency include a second sensing signal of the second frequency that undergoes a second phase shift on the first reflecting device. For a description of the first and second phase shifts, please refer to the relevant description in method 900; this embodiment will not repeat it further.

[0247] In one possible implementation, the first indication information includes an interferometric pattern, enabling the first device to directly acquire the interferometric pattern. In another possible implementation, the first indication information includes at least one of the following: the range of the interferometric pattern, its spatial period, or its gradient direction, which can simplify the signaling that needs to be transmitted.

[0248] Optionally, before the second device sends the first instruction information to the first device, the communication method provided in this application embodiment further includes: the second device acquiring position information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency; the second device determining an interference pattern based on the position information of the at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or, the power information of each of the at least two second sensing signals at the first frequency and the at least two second sensing signals at the second frequency.

[0249] The location information of at least two reflecting devices that reflect the first sensing signal at the first frequency and the first sensing signal at the second frequency, and / or the power information of each of the at least two first-frequency second sensing signals and the at least two second-frequency second sensing signals can be sent from the at least two reflecting devices to the second device, or they can be predefined. This application embodiment does not limit this, and the specific description can be referred to the description in method 900. This application embodiment will not repeat it here.

[0250] S1020, the first device determines the second position of the first device according to the interference pattern.

[0251] In this embodiment of the application, the interference pattern is the spatial distribution of the amplitude of the interference signal. The amplitude of the interference signal has a stable mapping relationship with the second position of the first device. Therefore, the first device can determine the second position of the first device based on the interference pattern.

[0252] Optionally, the communication method provided in this application embodiment further includes: the second device sending first configuration information to the first device. Correspondingly, the first device receives the first configuration information from the second device. The first configuration information is used to indicate information about a first phase shift and a second phase shift. This scheme allows the first device to obtain information about the first and second phase shifts through the first configuration information, and then determine the second position of the first device based on the information about the first and second phase shifts.

[0253] Alternatively, the first and second phase shifts in the embodiments of this application are pre-configured, which can save the overhead of configuration information.

[0254] Optionally, in one possible implementation, the communication method provided in this application embodiment further includes: a first device sending first information to a second device. Correspondingly, the second device receives the first information from the first device. In this application embodiment, the first information is used to indicate M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first frequencies of second sensing signals and a second amplitude sequence of at least two second frequencies of second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first frequencies whose N phases in the first phase shift sequence are sequentially phase-shifted by a first reflecting device, and the second amplitude sequence includes the amplitudes of second sensing signals of second frequencies whose N phases in the first phase shift sequence are sequentially phase-shifted by a first reflecting device; wherein, the ratio of M to N is used to determine the first phase shift and the second phase shift. N and M are both positive integers greater than 1. A description of the first information can be found in the relevant description in method 900, and will not be repeated here.

[0255] Optionally, in another possible implementation, the communication method provided in this application embodiment further includes: the first device sending second information to the second device. Correspondingly, the second device receives the second information from the first device. In this application embodiment, the second information is used to indicate the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein, the ratio of M to N is used to determine the first phase shift and the second phase shift. A description of the second information can be found in the relevant description in method 900, and will not be repeated here.

[0256] Optionally, in the embodiments of this application, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0257] or,

[0258] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0259] Optionally, the communication method provided in this application embodiment further includes: the first device sending first position information of the first device to the second device, and / or, motion direction information of the first device. Correspondingly, the second device receives the first position information and / or, motion direction information of the first device. In this scheme, the first device sending the first position information and / or, motion direction information of the first device to the second device enables the second device to adjust the power of the second sensing signal of the first frequency and the second frequency reflected by the reflecting device according to the first position information and / or, motion direction information of the first device, thereby obtaining an interference signal with a better interference pattern and improving the accuracy of position estimation.

[0260] Optionally, the communication method provided in this application embodiment further includes: a second device sending a first sensing signal. Correspondingly, the first device receives and measures the interference signal to obtain the amplitude information of the interference signal. A description of this step can be found in the relevant description in method 900, and will not be repeated here.

[0261] Optionally, in this embodiment of the application, the first device determines the second position of the first device based on the interference pattern, including: the first device determines the second position of the first device based on at least one of the interference pattern and amplitude information of the interference signal, the first position information of the first device, or the motion direction information of the first device.

[0262] Optionally, the communication method provided in this application embodiment further includes: the first device sending a sensing request to the second device. Correspondingly, the second device receives the sensing request from the first device.

[0263] Optionally, the communication method provided in this application embodiment further includes: the first device sending a sensing request to each of the at least two reflecting devices. Correspondingly, each of the at least two reflecting devices receives the sensing request from the first device.

[0264] In this embodiment of the application, the first position of the first device can be the overall position of the first device, or the global pattern of the first device, or the approximate position of the first device. The second position of the first device can be the local position of the first device, or the fine variation of the first device.

[0265] The communication method provided in this application embodiment includes a first device receiving first indication information for indicating an interference pattern and determining a second position of the first device based on the interference pattern. The interference pattern is the spatial distribution of the amplitude of an interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by a first reflecting device. Since the interference pattern and the amplitude of the interference signal have a stable mapping relationship, the first device can determine its second position based on the interference pattern, thus improving the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of these second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of first frequency and a second phase shift on the first sensing signal of second frequency, this method can also determine the direction of movement of the first device.

[0266] Figure 11 is a schematic diagram of another example of the communication method provided in this application embodiment. The method is illustrated using the interaction between a first device and a second device as an example. Of course, the entity executing the action of the first device in this method can also be a device / module of the first device, such as a chip, processor, or processing unit in the first device; similarly, the entity executing the action of the second device in this method can also be a device / module of the second device, such as a chip, processor, or processing unit in the second device. This application embodiment does not specifically limit this. For example, as shown in Figure 11, method 1100 includes:

[0267] S1110, the second device transmits a first sensing signal at a first frequency and a first sensing signal at a second frequency. Correspondingly, the first device receives the interference signal.

[0268] In this embodiment, the interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. For relevant descriptions and examples of the first sensing signals of first frequencies, the first sensing signals of second frequencies, the at least two second sensing signals of first frequencies, and the at least two second sensing signals of second frequencies, please refer to the description in method 900; these will not be repeated here.

[0269] In this embodiment, the at least two second sensing signals of the second frequency include a second sensing signal of the first frequency that undergoes a first phase shift on the first reflecting device, and the at least two second sensing signals of the second frequency include a second sensing signal of the second frequency that undergoes a second phase shift on the first reflecting device. For a description of the first and second phase shifts, please refer to the relevant description in method 900; this embodiment will not repeat it further.

[0270] Optionally, the communication method provided in this application embodiment further includes: a first device measuring an interference signal and obtaining amplitude information of the interference signal. A description of the first device measuring the interference signal can be found in the relevant description in method 900, and will not be repeated here.

[0271] S1120, the first device determines the second position of the first device based on the amplitude information of the interference signal.

[0272] In this embodiment of the application, the first device can determine the second position of the first device based on the amplitude information of the interference signal. For reference, please refer to the relevant descriptions in method 900 and method 1000. The embodiments of this application will not be repeated here.

[0273] Optionally, the communication method provided in this application embodiment further includes: the second device sending first configuration information to the first device. Correspondingly, the first device receives the first configuration information from the second device. The first configuration information is used to indicate information about a first phase shift and a second phase shift. This scheme allows the first device to obtain information about the first and second phase shifts through the first configuration information, and then determine the second position of the first device based on the information about the first and second phase shifts.

[0274] Alternatively, the first and second phase shifts in the embodiments of this application are pre-configured, which can save the overhead of configuration information.

[0275] Optionally, in one possible implementation, the communication method provided in this application embodiment further includes: a first device sending first information to a second device. Correspondingly, the second device receives the first information from the first device. In this application embodiment, the first information is used to indicate M, where M is the position of the first peak of the result of a cyclic shift correlation between a first amplitude sequence of at least two first frequencies of second sensing signals and a second amplitude sequence of at least two second frequencies of second sensing signals. The first amplitude sequence includes the amplitudes of second sensing signals of first frequencies whose N phases in the first phase shift sequence are sequentially phase-shifted by a first reflecting device, and the second amplitude sequence includes the amplitudes of second sensing signals of second frequencies whose N phases in the first phase shift sequence are sequentially phase-shifted by a first reflecting device; wherein, the ratio of M to N is used to determine the first phase shift and the second phase shift. N and M are both positive integers greater than 1. A description of the first information can be found in the relevant description in method 900, and will not be repeated here.

[0276] Optionally, in another possible implementation, the communication method provided in this application embodiment further includes: the first device sending second information to the second device. Correspondingly, the second device receives the second information from the first device. In this application embodiment, the second information is used to indicate the ratio of M to N, where M is the first peak position of the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals, and N is the period corresponding to the cyclic shift correlation result of the first amplitude sequence of at least two first-frequency second sensing signals and the second amplitude sequence of at least two second-frequency second sensing signals. The first amplitude sequence and the second amplitude sequence include the amplitude sequence of the interference signal measured sequentially by the movement of the first device; wherein, the ratio of M to N is used to determine the first phase shift and the second phase shift. A description of the second information can be found in the relevant description in method 900, and will not be repeated here.

[0277] Optionally, in the embodiments of this application, the first phase shift, the second phase shift, M, and N satisfy the following relationship:

[0278] or,

[0279] Where Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

[0280] Optionally, in this embodiment of the application, the first device determines the second position of the first device based on the amplitude information of the interference signal, including: the first device determines the second position of the first device based on the amplitude information of the interference signal and the position information of at least two reflecting devices that reflect the first sensing signal of the first frequency and the second frequency, or the position information of at least two reflecting devices that reflect the first sensing signal of the first frequency and the second frequency, or the first position of the first device.

[0281] Optionally, the communication method provided in this application embodiment further includes: at least two reflecting devices sending their own position information to a first device, and / or, each of the at least two reflecting devices sending power information of a second sensing signal at a first frequency and a second frequency that it reflects to the first device. Correspondingly, the first device receives the position information of the at least two reflecting devices that reflect the first sensing signal, and / or, the position information of the at least two reflecting devices that reflect the first sensing signal at the first frequency and the second frequency.

[0282] The communication method provided in this application embodiment includes a first device receiving an interference signal and determining a second position of the first device based on the amplitude information of the interference signal. The interference signal includes at least two second sensing signals of first frequencies and at least two second sensing signals of second frequencies. The at least two second sensing signals of first frequencies are obtained by reflecting the first sensing signals of first frequencies, and the at least two second sensing signals of second frequencies are obtained by reflecting the first sensing signals of second frequencies. The at least two second sensing signals of first frequencies include a second sensing signal of first frequency that has undergone a first phase shift by a first reflecting device, and the at least two second sensing signals of second frequencies include a second sensing signal of second frequency that has undergone a second phase shift by the first reflecting device. Since the interference pattern corresponding to the interference signal has a stable mapping relationship with the amplitude of the interference signal, the position information of the first device can be determined based on the amplitude information determined by the interference signal, thus improving the accuracy of position estimation. Furthermore, since the interference signal includes two second sensing signals of two frequencies, and one of the second sensing signals is obtained by the first reflecting device performing a first phase shift on the first sensing signal of the first frequency and a second phase shift on the first sensing signal of the second frequency, this method can also determine the direction of movement of the first device.

[0283] In summary, in methods 900 to 1100, the interference signal has a stable interference pattern in space, the interference signal received by the first device has a stable mapping relationship with the spatial position of the first device, and the movement direction of the terminal device can be distinguished. A specific example is given below, in which the first device is the terminal device and the second device is a network device (or base station).

[0284] Figure 12 is a schematic diagram of an example simulation scenario provided in an embodiment of this application. As shown in Figure 12, at least two reflecting devices are two reflectors. The spatial coordinates of the base station are (0,0,10), the spatial coordinates of one reflector are (-20,20,3), and the spatial coordinates of the other reflector are (20,20,3). The position traversed by the terminal device is a line segment with a starting point of (-2,25,1.5) and an ending point of (2,25,1.5), with the distance unit being meters (m). The two frequency points of the first sensing signal transmitted by the base station are f1 = 3.5 GHz and f2 = f1 + 1 MHz. Figure 13 is a top view of this simulation scenario. It can be seen from Figure 13 that the trajectory of the terminal device is located in the area closer to reflector B.

[0285] Consider two configurations. Configuration 1: At frequency point f2, the increment of the phase shift of reflector A relative to the phase shift of reflector B is... Configuration 2: At frequency point f2, the increment of the phase shift of reflector A relative to the phase shift of reflector B is...

[0286] Figure 14 shows the distribution of the received signal amplitudes at two frequency points in the XY plane (Z is 1.5 meters) when using configuration one. It can be seen that the signal amplitudes exhibit a clear pattern, presenting a specific shape (or pattern). This is due to the interference between the signals from reflectors A and B; therefore, this pattern is also called an interference pattern. It is also noted that the interference patterns corresponding to the two frequency points are basically the same, but their spatial positions are shifted overall.

[0287] To better observe the translational relationship between the spatial positions of these two patterns, the signal amplitude along the motion path of the terminal device is observed. Specifically, the horizontal line along the X-axis at Y=25 in the interferogram is taken, and the amplitude variation of the corresponding interferometric signal is shown in Figure 15. It can be seen that the signal amplitude variations at the two frequency points are different; there is no position where the rate of change of signal amplitude at both frequency points is simultaneously 0. Therefore, the measured interferometric signal amplitude can always distinguish the motion direction of the terminal device and estimate its motion error.

[0288] Figures 15 and 16 show the amplitude variations of the interference pattern and the interference signal received by the terminal device when using configuration two, respectively, and will not be described in detail here. It can be seen that when different phase offsets are applied to the signal at frequency f2 at the reflector, the spatial position of the interference pattern corresponding to that frequency point will shift. Correspondingly, when viewed along the X-axis, the amplitude variation of the interference signal received by the terminal device also shows a shift along the X-axis. Figure 17 is an amplitude variation diagram of the interference signal received by the terminal device when using configuration two, provided in an embodiment of this application.

[0289] The above mainly describes the solutions provided by the embodiments of this application from the perspective of the interaction between the first device and the second device. Correspondingly, the embodiments of this application also provide a communication device for implementing the various methods described above. This communication device can be the first device in the above method embodiments, or a device comprising the first device, or a component usable in the first device; or, the communication device can be the second device in the above method embodiments, or a device comprising the second device, or a component usable in the second device. It is understood that, in order to achieve the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0290] This application embodiment can divide the communication device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be understood that the module division in this application embodiment is illustrative and is only a logical functional division. In actual implementation, there may be other division methods.

[0291] For example, Figure 18 is a schematic diagram of a communication device provided in an embodiment of this application. Taking the communication device as the first device in the above method embodiment (which may be a chip of the first device, a module of the first device, or an internal device of the first device) as an example, the first device includes a transceiver module 1810 and a processing module 1820. The transceiver module 1810, also known as a transceiver unit, is used to implement the transceiver function. For example, it may be a transceiver circuit, a transceiver, a transceiver device, or a communication interface.

[0292] Alternatively, for example, Figure 18 is a schematic diagram of a communication device provided in an embodiment of this application. Taking the communication device as the second device in the above method embodiment (which may be a chip of the second device, a module of the second device, or an internal device of the second device) as an example, the second device includes a transceiver module 1810 and a processing module 1820. The transceiver module 1810, also known as a transceiver unit, is used to implement the transceiver function, and may be, for example, a transceiver circuit, a transceiver, a transceiver device, or a communication interface.

[0293] All relevant content of each step involved in the above method embodiments can be referred to in the functional description of the corresponding functional module, and will not be repeated here. Optionally, the communication device may further include a storage module 1830, which can be used to store instructions and / or data, and the processing module 1820 can read the instructions and / or data in the storage module 1830.

[0294] In this embodiment, the communication device can be presented in an integrated manner, divided into various functional modules. Here, "module" can refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuits, and / or other devices that can provide the aforementioned functions. In a simple embodiment, those skilled in the art will recognize that the communication device can take the form of the communication device 800 shown in FIG8.

[0295] For example, the processor 811 in the communication device 800 shown in Figure 8 can call the computer execution instructions stored in the memory 812 to make the communication device execute the communication method in the above method embodiment.

[0296] Specifically, the functions / implementation processes of the transceiver module 1810 and the processing module 1820 in Figure 18 can be implemented by the processor 811 in the communication device 800 shown in Figure 8 calling computer execution instructions stored in the memory 812. Alternatively, the functions / implementation processes of the processing module 1820 in Figure 18 can be implemented by the processor 811 in the communication device 800 shown in Figure 8 calling computer execution instructions stored in the memory 812.

[0297] Since the communication device provided in this application embodiment (which may be a chip of the communication device, a module of the communication device, or a device inside the communication device) can execute the above communication method, the technical effects it can obtain can be referred to the above method embodiment, and will not be repeated here.

[0298] It should be understood that one or more of the above modules or units can be implemented by software, hardware, or a combination of both. When any of the above modules or units are implemented by software, the software exists as computer program instructions and is stored in memory. The processor can be used to execute the program instructions and implement the above method flow. The processor can be built into a SoC (System-on-a-Chip) or ASIC, or it can be a separate semiconductor chip. In addition to the core that executes software instructions for computation or processing, the processor may further include necessary hardware accelerators, such as field-programmable gate arrays (FPGAs), PLDs (Programmable Logic Devices), or logic circuits that implement dedicated logic operations.

[0299] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, microprocessor, digital signal processing (DSP) chip, microcontroller unit (MCU), artificial intelligence processor, ASIC, SoC, FPGA, PLD, application-specific digital circuit, hardware accelerator, or non-integrated discrete device, which can run the necessary software or perform the above method flow independently of software.

[0300] Optionally, embodiments of this application also provide a communication device (e.g., the communication device may be a chip or a chip system), which includes a processor for implementing the methods in any of the above method embodiments. In one possible design, the communication device further includes a memory. The memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication device to execute the methods in any of the above method embodiments. Of course, the memory may not be included in the communication device. When the communication device is a chip system, it may be composed of chips or may include chips and other discrete devices; embodiments of this application do not specifically limit this.

[0301] Optionally, embodiments of this application also provide a computer-readable storage medium storing a computer program or instructions that, when run on a communication device, enable the communication device to execute the methods described in any of the above method embodiments or any implementation thereof.

[0302] Optionally, embodiments of this application also provide a communication system, which includes the first device and the second device described in the above method embodiments.

[0303] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device containing one or more servers, data centers, etc., that can be integrated with the medium. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks, SSDs).

[0304] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, the disclosure, and the appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0305] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the scope of this application. Accordingly, this specification and drawings are merely illustrative descriptions of the application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of the claims and their equivalents, this application is also intended to include such modifications and modifications.

Claims

1. A communication method characterized by comprising: The method is applied to a first device, and comprises: receiving an interference signal, the interference signal comprising at least two second sensing signals of a first frequency and at least two second sensing signals of a second frequency, the at least two second sensing signals of the first frequency being reflected from the first sensing signal of the first frequency, and the at least two second sensing signals of the second frequency being reflected from the first sensing signal of the second frequency, the at least two second sensing signals of the first frequency comprising a first second sensing signal of the first frequency which is subjected to a first phase shift by a first reflecting device, and the at least two second sensing signals of the second frequency comprising a second second sensing signal of the second frequency which is subjected to a second phase shift by the first reflecting device; sending a measurement report, the measurement report comprising amplitude information of the interference signal.

2. The method of claim 1, wherein, The method further comprises: receiving first configuration information, the first configuration information being used to indicate information of the first phase shift and the second phase shift.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: sending first information, the first information being used to indicate M, the M being a position of a first peak value of a result of a cyclic shift correlation of a first amplitude sequence of the at least two second sensing signals of the first frequency and a second amplitude sequence of the at least two second sensing signals of the second frequency, the first amplitude sequence comprising amplitudes of the first second sensing signal of the first frequency whose N phases in the first phase shift sequence are subjected to phase shifts by the first reflecting device in turn, and the second amplitude sequence comprising amplitudes of the second second sensing signal of the second frequency whose N phases in the first phase shift sequence are subjected to phase shifts by the first reflecting device in turn; wherein a ratio of the M to N is used to determine the first phase shift and the second phase shift.

4. The method according to claim 1 or 2, characterized in that, The method further comprises: sending second information, the second information being used to indicate a ratio of the M to N, the M being a first peak value position of a result of a cyclic shift correlation of a first amplitude sequence of the at least two second sensing signals of the first frequency and a second amplitude sequence of the at least two second sensing signals of the second frequency, and the N being a period corresponding to the result of the cyclic shift correlation of the first amplitude sequence of the at least two second sensing signals of the first frequency and the second amplitude sequence of the at least two second sensing signals of the second frequency, the first amplitude sequence and the second amplitude sequence comprising amplitude sequences of the interference signal which are measured by the first device in turn; wherein the ratio of the M to N is used to determine the first phase shift and the second phase shift.

5. The method according to claim 3 or 4, characterized in that, The first phase shift, the second phase shift, the M, and the N satisfy the following relationship: or wherein Δφ1 represents the first phase shift, and Δφ2 represents the second phase shift.

6. The method according to any one of claims 1 to 5, characterized in that, The method further comprises: measuring the interference signal to obtain amplitude information of the interference signal.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises: sending first position information of the first device, and / or motion direction information of the first device.

8. A communication method characterized by comprising: The method comprises: receiving a measurement report, the measurement report comprising amplitude information of an interference signal, the interference signal comprising at least two second sensing signals of a first frequency and at least two second sensing signals of a second frequency, the at least two second sensing signals of the first frequency being reflected from the first sensing signal of the first frequency, the at least two second sensing signals of the second frequency being reflected from the first sensing signal of the second frequency, the at least two second sensing signals of the first frequency comprising a first second sensing signal of the first frequency being first phase shifted by a first reflecting device, the at least two second sensing signals of the second frequency comprising a second second sensing signal of the second frequency being second phase shifted by the first reflecting device; determining a second position of the first device according to the amplitude information of the interference signal.

9. The method of claim 8, wherein, The method further comprises: sending first configuration information, the first configuration information being used to indicate information of the first phase shift and the second phase shift.

10. The method according to claim 8 or 9, characterized in that, The method further comprises: receiving first information, the first information being used to indicate M, the M being a position of a first peak of a result of a cyclic shift correlation of a first amplitude sequence of the at least two second sensing signals of the first frequency and a second amplitude sequence of the at least two second sensing signals of the second frequency, the first amplitude sequence comprising amplitudes of the first second sensing signals of the first frequency in which N phases are successively phase shifted by the first reflecting device, the second amplitude sequence comprising amplitudes of the second second sensing signals of the second frequency in which N phases are successively phase shifted by the first reflecting device; wherein a ratio of the M and N is used to determine the first phase shift and the second phase shift.

11. The method according to claim 8 or 9, characterized in that, The method further comprises: receiving second information, the second information being used to indicate a ratio of the M and N, the M being a position of a first peak of a result of a cyclic shift correlation of a first amplitude sequence of the at least two second sensing signals of the first frequency and a second amplitude sequence of the at least two second sensing signals of the second frequency, the N being a period corresponding to the result of the cyclic shift correlation of the first amplitude sequence of the at least two second sensing signals of the first frequency and the second amplitude sequence of the at least two second sensing signals of the second frequency, the first amplitude sequence and the second amplitude sequence comprising amplitude sequences of the interference signal successively measured by the first device movement; wherein the ratio of the M and N is used to determine the first phase shift and the second phase shift.

12. The method according to claim 10 or 11, characterized in that, The first phase shift, the second phase shift, the M, and the N satisfy the following relationship: or wherein Δφ1 represents the first phase shift and Δφ2 represents the second phase shift.

13. The method according to any one of claims 8 to 12, characterized in that, The method further comprises: obtaining at least one of first position information of the first device, movement direction information of the first device, position information of at least two reflecting devices reflecting the first sensing signal, or power information of each of the at least two second sensing signals. The determining a second position of the first device according to the amplitude information of the interference signal comprises: determining the second position of the first device according to the amplitude information of the interference signal and the at least one.

14. The method of claim 13, wherein the obtaining the first position information of the first device, and / or the motion direction information of the first device comprises: receiving the first position information of the first device, and / or the motion direction information of the first device.

15. The method of claim 13 or 14, wherein the obtaining the position information of the at least two reflecting devices reflecting the first sensing signal, and / or the power information of each of the at least two second sensing signals comprises: receiving the position information of the at least two reflecting devices reflecting the first sensing signal, and / or the position information of the at least two reflecting devices reflecting the first sensing signal. The communication device comprises a module for performing the method according to any one of claims 1 to 7, or a module for performing the method according to any one of claims 8 to 15. The communication device comprises a processor configured to perform the method according to any one of claims 1 to 7, or to cause the communication device to perform the method according to any one of claims 8 to 15. The computer readable storage medium comprises instructions that, when executed, cause the method according to any one of claims 1 to 7 to be implemented, or cause the method according to any one of claims 8 to 15 to be implemented. The computer program product comprises instructions that, when executed, cause the method according to any one of claims 1 to 7 to be implemented, or cause the method according to any one of claims 8 to 15 to be implemented.

16. A communications device, characterized by ​ 17. A communications device, characterized by ​ 18. A computer-readable storage medium, characterized in that, ​ 19. A computer program product, characterised in that, ​

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