Communication method and apparatus

Abstract

The present application provides a communication method, comprising: receiving at least one reference signal sent by a second apparatus; and reporting to, a third apparatus, information of a target reference signal and / or beam information associated with the target reference signal, wherein the at least one reference signal includes the target reference signal, and the target reference signal is a reference signal meeting a first condition. The communication method of the present application can adapt to the transmission and reception of signals in wireless sensing scenarios.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application filed with the Intellectual Property Office of the People's Republic of China on February 6, 2024, with application number 202410172339.3 and invention name "Communication Method and Device Thereof", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present invention relate to technical fields such as wireless communication, wireless perception, and integrated wireless communication and perception, and more particularly to a communication method and apparatus thereof. Background Art

[0003] Communication technology transfers data or information through various communication media. Wireless communication uses wireless communication media such as radio waves for transmission and communication.

[0004] Wireless communication, for example, is used to efficiently transmit data between devices. Wireless sensing technology uses received wireless signals to infer the location, motion, and various characteristics of objects, people, or other objects in the environment.

[0005] Signal transmission often considers wireless communication scenarios. For example, in wireless communication scenarios, the higher the energy or power of the signal received by the receiver, the higher the communication efficiency. However, in wireless sensing scenarios, the transmission path with the highest signal energy or power is usually the direct path or line of sight (LoS) path. There is usually no sensing target on this transmission path. Therefore, while the signal on this transmission path is suitable for wireless communication, it is not suitable for wireless sensing. Therefore, how to adapt signal transmission and reception in wireless sensing scenarios is a technical problem that needs to be solved urgently. Summary of the Invention

[0006] The present application provides a communication method (which can also be understood as a wireless sensing method, a communication sensing integrated method), a communication device (which can also be understood as a wireless sensing device, a communication sensing integrated device), a communication system (which can also be understood as a wireless sensing system, a communication sensing integrated system) and a computer-readable storage medium.

[0007] In a first aspect, the present application relates to a communication method, applied to a first device, comprising: receiving at least one reference signal transmitted by a second device; and reporting target reference signal information and / or beam information associated with the target reference signal to a third device, wherein the at least one reference signal includes the target reference signal, and the target reference signal is a reference signal that satisfies a first condition, wherein the first condition includes at least one of the following:

[0008] Condition 1: The presence of a scatterer is determined based on the target reference signal. This condition can also be understood as meaning that the target reference signal reaches the first device after being scattered or reflected by a scatterer, or that a portion of the power or energy of the target reference signal reaches the first device after being scattered or reflected by a scatterer, or that a scatterer exists along the transmission path of the target reference signal.

[0009] The first device and the second device use different beams to transmit and receive reference signals RS i (where RS i is one of the at least one reference signal sent by the second device), the reference signal RS may be changed i Energy and power distribution on different transmission paths, for example, when the first device and the second device align their beams with the straight path, the reference signal RS i The main energy and power of reaches the first device through the direct path, so the reference signal RS received by the first device i The power of the reference signal RS i If the signal is transmitted to the first device through a direct path, the first device will i The measurement results mainly include the characteristics of the direct path channel itself of the first device and the second device, and basically do not include the characteristics of other scatterers. In this case, the reference signal does not meet condition 1. For example, when the first device and the second device align their beams with a transmission path scattered or reflected by a scatterer, the main energy and power of the reference signal reaches the first device through the scattering path. In this case, the first device has no effect on the RS. i The measurement results of the first and second devices primarily include the characteristics of the scattering path channel. The characteristics of the scattering path channel actually reflect the characteristics of the scatterer. In this case, the reference signal satisfies condition 1. Specifically, the first device can use an algorithm such as presence detection to determine whether a scatterer exists based on the measurement results of the reference signal.

[0010] Condition 2. The presence of a mobile scatterer is determined based on the target reference signal. This can be understood as the target reference signal reaching the first device after being scattered or reflected by a mobile scatterer, or part of the power or energy of the target reference signal reaching the first device after being scattered or reflected by a mobile scatterer, or there is a mobile scatterer in the transmission path of the target reference signal.

[0011] For example, when the first device and the second device align their beams with a transmission path scattered or reflected by a moving scatterer, the main energy and power of the reference signal reaches the first device through the scattering path, and the first device can iThe measurement results primarily include the characteristics of the scattering path channel between the first and second devices, which effectively reflect the characteristics of the moving scatterer. Specifically, the first device can use an algorithm such as presence detection to determine the presence of a scatterer, and then calculate the Doppler frequency based on the measurement results of the reference signal to determine whether the scatterer is moving.

[0012] Condition 3: The probability of a scatterer being present, as determined based on the target reference signal, is greater than or equal to a first probability threshold. This can be understood as the probability that the target reference signal reaches the first device after being scattered or reflected by a scatterer, the probability that a portion of the power or energy of the target reference signal reaches the first device after being scattered or reflected by a scatterer, or the probability that a scatterer exists along the transmission path of the target reference signal is greater than or equal to the first probability threshold.

[0013] For example, the probability of the presence of a scatterer may be determined using an algorithm such as presence detection.

[0014] Condition 4: The probability of the presence of a moving scatterer, as determined based on the target reference signal, is greater than or equal to a second probability threshold. This can be understood as the probability that the target reference signal reaches the first device after being scattered or reflected by a moving scatterer, the probability that a portion of the power or energy of the target reference signal reaches the first device after being scattered or reflected by a moving scatterer, or the probability that a moving scatterer exists along the transmission path of the target reference signal is greater than or equal to the first probability threshold.

[0015] For example, the probability of the existence of a scatterer can be determined by using an algorithm such as presence detection, and then the Doppler frequency can be calculated by detecting the measurement result of the reference signal to determine whether the scatterer moves.

[0016] Condition 5: The first signal power obtained based on the measured target reference signal is greater than or equal to the first power threshold, and the first signal power is within the first delay range. Alternatively, the first signal amplitude (or sum of amplitudes) obtained based on the measured target reference signal is greater than or equal to the first amplitude threshold, and the first signal amplitude (or sum of amplitudes) is within the first delay range.

[0017] Due to the multipath effect, when there is multipath in the transmission environment, a reference signal RS i The signal can be transmitted from the second device to the first device via multiple paths, such as direct paths and transmission paths scattered or reflected by scatterers. Different transmission paths have different time delays and gain coefficients. Generally, the time delay of the direct path is smaller and the gain coefficient is larger, while the time delay of the transmission path scattered or reflected by scatterers is larger and the gain coefficient is smaller. The first device receives the reference signal RS iThe delay power spectrum can be obtained by processing the measurement results of the reference signal. The delay power spectrum can reflect the delay distribution of different transmission paths and the power distribution corresponding to each delay (positively correlated with the absolute value of the amplitude). In addition, when the second device and the first device use different beams to transmit and receive the reference signal RS i The reference signal RS can be changed i Energy and power distribution on different transmission paths. Since the transmission delay of different paths corresponds to the sum of the distances between the associated scatterers and the first device and the second device, if only scatterers within a specific distance range are to be sensed, the reference signal RS is sent and received through a specific beam. i After that, the first device can measure the signal power within a specific delay range (corresponding to the first delay range mentioned above). If the signal power within the delay range is large (the signal power is large, for example, greater than or equal to the first power threshold), it proves that the reference signal RS i A relatively large amount of power passes through one or more scatterers to reach the first device, and the one or more scatterers are within the above-mentioned specific distance range.

[0018] Condition 6: The power of a second signal obtained from the measurement target reference signal is greater than or equal to a second power threshold, and the second signal power is within the first Doppler frequency range. Alternatively, the amplitude (or sum of amplitudes) of a second signal obtained from the measurement target reference signal is greater than or equal to a second amplitude threshold, and the amplitude (or sum of amplitudes) of the second signal is within the first Doppler frequency range.

[0019] Due to the multipath effect, when there is multipath in the transmission environment, a reference signal RS i The signal can be transmitted from the second device to the first device via multiple paths, such as a direct path and a transmission path scattered or reflected by a scatterer. Different transmission paths have different Doppler frequencies and gain coefficients. i Post-reference signal RS i The Doppler power spectrum can be obtained by processing the measurement results. The Doppler power spectrum can reflect the Doppler frequency distribution of different transmission paths and the power distribution corresponding to each Doppler frequency (positively correlated with the absolute value of the gain coefficient). In addition, when the second device and the first device use different beams to transmit and receive the reference signal RS i The reference signal RS can be changed i Energy and power distribution on different transmission paths. Therefore, if you only want to sense scatterers within a specific range of movement speed or frequency (for example, if you want to determine whether there is a person by breathing detection), the reference signal RS is sent and received through a specific beam. iAfter that, the first device can measure the signal power within a specific Doppler frequency range (corresponding to the first Doppler frequency range mentioned above). If the signal power within the Doppler frequency range is large (the signal power is large, for example, greater than or equal to the second power threshold), it proves that the reference signal RS i More power passes through one or more scatterers to reach the first device, and the one or more scatterers are within the above-mentioned specific motion speed range or motion frequency range.

[0020] Condition 7: The power of a third signal obtained based on the measurement target reference signal is greater than or equal to a third power threshold, and the third signal power is the signal power within the first Doppler frequency range and the first time delay range. Alternatively, the amplitude (or sum of amplitudes) of a third signal obtained based on the measurement target reference signal is greater than or equal to a third amplitude threshold, and the amplitude (or sum of amplitudes) of the third signal is the amplitude (or sum of amplitudes) within the first Doppler frequency range and the first time delay range.

[0021] Condition 8: The similarity (also understood as correlation) between the measurement result of the target reference signal and the measurement result of the reference reference signal is less than or equal to the similarity threshold (also understood as correlation threshold), and the reference reference signal is associated with the target reference signal.

[0022] Whether a new sensing target appears in the current environment can be determined by the above-mentioned condition 8. For example, if the reference signal RS is not detected, the presence of scatterer A in the current environment has been determined by using the reference signal (associated with the thin beam). i The coarse beam is associated and covers the fine beam, then the first device according to RS i It is determined that there is a scatterer X, which may be scatterer A or a scatterer different from scatterer A. The reference signal RS i The similarity between the measurement result of and the measurement result of the reference signal can reflect whether the scatterer X is the scatterer A.

[0023] Exemplarily, the similarity is the similarity between the delay spectrum of the target reference signal and the delay spectrum of the reference reference signal, or the similarity is the similarity between the Doppler spectrum of the target reference signal and the Doppler spectrum of the reference reference signal, or the similarity is the similarity between the delay-Doppler spectrum of the target reference signal and the delay-Doppler spectrum of the reference reference signal.

[0024] The delay-Doppler spectrum can characterize the power, amplitude, or energy distribution in two dimensions: delay and Doppler frequency.

[0025] Exemplarily, the reference reference signal is associated with the reference beam, the target reference signal is associated with the target beam, and the target beam covers the reference beam.

[0026] Condition 9: The change in the measurement result of the target reference signal is greater than or equal to the change threshold.

[0027] Whether a new perception target appears in the current environment can be determined by the above-mentioned condition 9. For example, when a new scatterer appears under a certain beam, the channel measurement result under the beam will change. Therefore, in condition 9, the target beam can be determined by the change in the measurement result. The specific measurement results can be the channel response coefficient, delay spectrum, Doppler spectrum, delay-Doppler spectrum, etc.

[0028] Exemplarily, before reporting the target reference signal information to the third device, the method further includes:

[0029] Configuration information sent by a third device is received, wherein the configuration information instructs the first device to report information of a reference signal that meets a first condition.

[0030] Exemplarily, before reporting the target reference signal information to the third device, the method further includes:

[0031] Receive configuration information sent by a third device, wherein the configuration information includes at least one of the following: a first power threshold, a first delay range, a second power threshold, a first Doppler frequency range, a third power threshold, a first probability threshold, a second probability threshold, a similarity threshold, and a change threshold.

[0032] When the measurement result of the reference signal meets the first condition, it can be considered that the measurement result of the reference signal includes the perception information of the scatterer or the moving scatterer, or includes the perception information of the scatterer or the moving scatterer with a higher probability, or includes scatterers within a specific distance range or a specific moving speed range, etc.

[0033] Exemplarily, before reporting the information of the target reference signal to the third device, it also includes: receiving configuration information sent by the third device, wherein the configuration information includes: information of at least one transmitting beam and / or information of at least one receiving beam, each of the at least one reference signal is associated with one transmitting beam of the at least one transmitting beam, and / or each of the at least one reference signal is associated with one receiving beam of the at least one receiving beam.

[0034] The beam information may specifically include one or more of the following information: beam identification, direction, beam width, etc.

[0035] When the first and second devices transmit and receive reference signals based on beams, the signal-to-noise ratio (SNR) or signal-to-interference-and-noise ratio (SINR) of scatterer perception measurement results can be improved. Furthermore, configuring beam information enables the first and second devices to scan and perceive scatterers in specific directions and locations.

[0036] Exemplarily, the first Doppler frequency range is predefined as a non-zero Doppler frequency range.

[0037] A first Doppler frequency range of zero indicates that the scatterer's velocity is zero. The Doppler frequency is used to determine the velocity of a scatterer. In some scenarios, wireless sensing of stationary scatterers is not very meaningful. Therefore, the communication method of the disclosed embodiments can, for example, use a non-zero first Doppler frequency range to focus on moving scatterers. Furthermore, the first Doppler frequency range can, for example, be predefined by a standard to reduce configuration overhead. The first Doppler frequency range can also be preconfigured.

[0038] Exemplarily, the first power threshold is determined according to a fourth signal power and a first difference or a first ratio, the fourth signal power is a signal power of a first reference signal within a first delay range, and the first reference signal is associated with a target reference signal.

[0039] Exemplarily, the second power threshold is determined according to a fifth signal power and a second difference or a second ratio, where the fifth signal power is the power of the first reference signal within a first Doppler frequency range, and the first reference signal is associated with the target reference signal.

[0040] Exemplarily, the third power threshold is determined based on the sixth signal power and the third difference or the third ratio, the sixth signal power is the signal power of the first reference signal within the first time delay range and the first Doppler frequency range, and the sixth reference signal is associated with the target reference signal.

[0041] Exemplarily, the first reference signal is associated with the first beam, the target reference signal is associated with the target beam, and the first beam covers the target beam.

[0042] According to the communication method of the present application, through the first power threshold, the second power threshold, and the third power threshold, a finer target beam can be determined from the beam associated with the first reference signal, the resolution of the target beam is higher, and the accuracy and performance of wireless perception are higher.

[0043] Exemplarily, the first signal power is calculated using one of the following formulas:

[0044] or,

[0045] Where, Γ represents the first delay range, H k represents the channel response coefficient on the frequency domain unit k determined according to the target reference signal measurement result, D represents a delay within the first delay range, N1 is determined according to the bandwidth of the target reference signal, or N1 represents the number of points of the inverse discrete Fourier transform IDFT, and A1 is a constant.

[0046] Exemplarily, the first signal power is determined based on the power of the path with the highest power among multiple target paths, where the multiple target paths are multiple paths determined based on the target reference signal, and the delay of each path in the multiple target paths is within the first delay range.

[0047] The delay is D p The power of the path is determined according to the following formula:

[0048] Among them, H k represents the channel response coefficient on the frequency domain unit k determined according to the target reference signal measurement result, N1 is determined according to the bandwidth of the target reference signal, or N1 represents the number of points of the inverse discrete Fourier transform IDFT, and A1 is a constant.

[0049] Exemplarily, the second signal power is calculated using one of the following formulas:

[0050] A2∫ f∈Λ |∑ i H i exp(j2πfT i )| 2 ,or,

[0051] A2∑ f∈Λ |∑ i H i exp(j2πfT i )| 2 ,

[0052] Where Λ represents the first Doppler frequency range, H i represents the channel response coefficient at time unit i determined according to the target reference signal measurement result, f represents a Doppler frequency within the first Doppler frequency range, T i Represents the moment corresponding to time unit i.

[0053] Exemplarily, the second signal power is determined based on the power of the path with the highest power among multiple target paths, where the multiple target paths are multiple paths determined based on the target reference signal, and the Doppler frequency of each path in the multiple target paths is within the first Doppler frequency range.

[0054] The power of the path with Doppler frequency f is determined by the following formula: A2|∑ i H i exp(-j2πfT i )| 2 ,

[0055] Among them, H irepresents the channel response coefficient on time unit i determined based on the target reference signal measurement result, T i represents the time corresponding to the time unit i, and f represents a Doppler frequency within the first Doppler frequency range.

[0056] In a second aspect, the present application relates to a communication method, applied to a third device, the communication method comprising: receiving target reference signal information and / or beam information associated with the target reference signal reported by a first device, wherein the target reference signal is a reference signal that satisfies a first condition, and the first condition includes at least one of the following:

[0057] The first signal power obtained by measuring the target reference signal is greater than or equal to a first power threshold, and the first signal power is a signal power within a first time delay range.

[0058] The second signal power obtained by measuring the target reference signal is greater than or equal to a second power threshold, and the second signal power is a signal power within the first Doppler frequency range.

[0059] The third signal power obtained by measuring the target reference signal is greater than or equal to a third power threshold, and the third signal power is signal power within the first Doppler frequency range and the first time delay range.

[0060] The presence of scatterers is determined based on the target reference signal.

[0061] The presence of a moving scatterer is determined based on the target reference signal.

[0062] The probability of the existence of the scatterer determined according to the target reference signal is greater than or equal to a first probability threshold.

[0063] The probability of determining, based on the target reference signal, that a moving scatterer exists is greater than or equal to a second probability threshold.

[0064] A similarity between a measurement result of the target reference signal and a measurement result of the reference reference signal is less than or equal to a similarity threshold, and the reference reference signal is associated with the target reference signal.

[0065] A variation of the measurement result of the target reference signal is greater than or equal to a variation threshold.

[0066] Exemplarily, before receiving the target reference signal information reported by the first device, the method further includes: sending configuration information to the first device, wherein the configuration information instructs the first device to report the reference signal information that meets the first condition.

[0067] Exemplarily, before receiving the information of the target reference signal reported by the first device, it also includes: sending configuration information to the first device, wherein the configuration information includes at least one of the following: a first power threshold, a first delay range, a second power threshold, a first Doppler frequency range, a third power threshold, a first probability threshold, a second probability threshold, a similarity threshold, and a change threshold.

[0068] Exemplarily, the communication method further includes: sending at least one reference signal to the first device, wherein the at least one reference signal includes a target reference signal.

[0069] Exemplarily, before receiving the information of the target reference signal reported by the first device, it also includes: sending configuration information to the first device, wherein the configuration information includes: information of at least one transmitting beam and / or information of at least one receiving beam, each of the at least one reference signal is associated with one transmitting beam of the at least one transmitting beam, and / or each of the at least one reference signal is associated with one receiving beam of the at least one receiving beam.

[0070] In a third aspect, the present application relates to a communication device, comprising: a transceiver module, the transceiver module being used to execute the above-mentioned communication method of the first aspect.

[0071] In a fourth aspect, the present application relates to a communication device, comprising: a transceiver module, the transceiver module being used to execute the above-mentioned communication method of the second aspect.

[0072] Exemplarily, the communication device may include a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to execute the above-mentioned communication method through logic circuits or executing code instructions.

[0073] Exemplarily, the instructions are stored in a memory that is communicatively connected or coupled to the processor.

[0074] Exemplarily, the communication device is a chip.

[0075] In a fifth aspect, the present application relates to a communication system, comprising: a first device and a third device.

[0076] Exemplarily, the communication system further includes: a second device for sending at least one reference signal to the first device.

[0077] In a sixth aspect, the present application relates to a chip module, comprising a transceiver component and a chip, and the chip is used to execute the above-mentioned communication method.

[0078] In a seventh aspect, the present application relates to a computer-readable storage medium storing computer instructions, wherein when the computer instructions are executed, the computer executes the above-mentioned communication method. In some embodiments, the computer-readable storage medium is a non-transitory storage medium.

[0079] In an eighth aspect, the present application relates to a computer program product, including computer program code, which is stored on a readable storage medium. When the computer program code is executed, the computer implements the above-mentioned communication method. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The following is an introduction to the drawings used in the embodiments of this application.

[0081] FIG1 schematically shows a schematic diagram of wireless communication;

[0082] FIG2A schematically shows a schematic diagram of a system architecture of a communication method according to an embodiment of the present disclosure;

[0083] FIG2B schematically shows a schematic diagram of another system architecture of a communication method according to an embodiment of the present disclosure;

[0084] FIG2C schematically shows a schematic diagram of another system architecture of a communication method according to an embodiment of the present disclosure;

[0085] FIG3 schematically shows an interaction diagram of a communication method according to an embodiment of the present disclosure;

[0086] FIG4 schematically shows a schematic diagram corresponding to FIG1 of transmitting a reference signal and receiving a reference signal by transmitting a beam and receiving a beam;

[0087] FIG5A schematically shows an interaction diagram of a communication system executing a communication method according to an embodiment of the present disclosure;

[0088] FIG5B schematically shows a schematic diagram of improving wireless sensing accuracy through beam training;

[0089] FIG6A schematically shows an interaction diagram of a communication system executing a communication method according to an embodiment of the present disclosure;

[0090] FIG6B schematically shows a schematic diagram of a communication method for continuously sensing whether a new sensing target appears in the current environment according to an embodiment of the present disclosure;

[0091] FIG7 schematically shows an interaction diagram of a communication method according to yet another embodiment of the present disclosure;

[0092] FIG8 schematically shows a flow chart of a communication method performed by a third device according to an embodiment of the present disclosure;

[0093] FIG9 schematically shows a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0094] FIG10 schematically shows a schematic diagram of a communication device according to another embodiment of the present disclosure;

[0095] FIG11 shows a schematic block diagram of an example communication device that can be used to implement yet another embodiment of the present disclosure. DETAILED DESCRIPTION

[0096] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0097] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0098] In the description and claims of the embodiments of this application, the terms "first" and "second" are used to distinguish different objects, rather than to describe a specific order of objects. For example, the terms "first target object" and "second target object" are used to distinguish different objects, rather than to describe a specific order of objects.

[0099] In the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0100] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0101] The following describes in detail the background of the communication method according to the embodiment of the present disclosure.

[0102] Communication technology transfers data or information through various communication media. Wireless communication uses wireless communication media such as radio waves for transmission and communication.

[0103] Wireless communication is used, for example, to achieve efficient data transmission between devices.

[0104] Different from wireless communication technology, wireless sensing technology uses received wireless signals to infer the location, motion status and various characteristics of objects, people or other objects in the environment.

[0105] In wireless sensing technology, a transmitter can radiate electromagnetic waves to the surrounding environment to send a specific signal, and a receiver can correspondingly receive the signal reflected by the environment. The receiver and transmitter can compare and analyze the correlation between the received signal and the transmitted signal, and analyze relevant information about the surrounding environment. The relevant information about the surrounding environment may include, for example: whether there is a sensing target in the environment; the distance between the sensing target and the receiver and transmitter respectively; the direction of the sensing target relative to the receiver and transmitter respectively, which can be represented by the horizontal angle and the vertical angle; the moving speed of the sensing target relative to the receiver and transmitter respectively, etc.

[0106] For example, in a connected car scenario, vehicles can obtain information about their surroundings through wireless sensing. This information can include the location and speed of mobile sensing targets such as vehicles and pedestrians, as well as information about relatively stationary sensing targets such as road surfaces and fences. Another example is that in scenarios like airports, equipment can be deployed to monitor drones to prevent them from impacting the takeoff and landing of passenger aircraft. In a home, wireless sensing can be used to detect intruders, improving security and privacy.

[0107] With the advancement of communication technology, integrated sensing and communication (ISAC) is becoming a future trend. This can be understood as combining existing communication and perception functions. One of the goals of ISAC is to enable communication and perception using the same signal within the same spectrum, avoiding interference and improving spectrum utilization. This is a preferred path for technological and industrial development. Furthermore, wireless communication and wireless perception are increasingly similar in terms of system design, signal processing, and data processing. Using the same equipment or sharing some components for communication and perception reduces equipment cost, size, and power consumption, and is also a preferred product form factor. Furthermore, the development of technologies such as ultra-large-scale antennas, large bandwidth, intelligent metasurfaces (RIS), and artificial intelligence will further promote the advancement of perception technology. ISAC can be applied, for example, in areas such as the Internet of Vehicles, smart factories, and smart healthcare.

[0108] Figure 1 schematically shows a schematic diagram of wireless communication. In the example of Figure 1, the two communicating parties in the current environment are device A and device B, device A is a transmitter, and device B is a receiver. The signal in the form of radio waves sent by device A may reach device B along multiple paths, that is, the multipath effect. In the example of Figure 1, it is schematically shown that the signal sent by device A in the current environment reaches device B via three paths: path P1, path P2, and path P3. Path P1 is a line-of-sight path. During the transmission of the signal along path P2, it is reflected by scatterer C. During the transmission of the signal along path P3, it is reflected by scatterer D. The scatterer in the embodiment of the present disclosure can also be understood as concepts such as a scattering entity, a reflector, a reflecting entity, a target, and a sensing target. The signal sent by device A to device B in the embodiment of the present disclosure can, for example, be a reference signal.

[0109] In wireless communication scenarios, the greater the energy or power of the signal received by the receiver, the higher the communication efficiency. The transmission path with the highest signal energy or power is typically the direct path, which is also called the line of sight (LoS) path. For example, in the example in Figure 1, there is no sensing target on the direct path P1. Therefore, although the signal on this transmission path is suitable for wireless communication, it is not suitable for wireless sensing.

[0110] In wireless sensing scenarios, the purpose of wireless sensing is to determine the presence of a sensing target and to determine relevant information about the sensing target. In the example of Figure 1, the sensing target is a scatterer. Therefore, transmission path P2, where the signal is reflected by scatterer C, and transmission path P3, where the signal is reflected by scatterer D, are relatively optimal signal transmission paths in wireless sensing scenarios.

[0111] In actual wireless sensing scenarios, there may be multiple sensing targets, necessitating the ability to distinguish them across different dimensions. For example, in the temporal dimension, if a receiver detects two signal arrival times, it can be assumed that there are two objects in the environment. The signal, after reflecting off these two objects, arrives at the receiver along two different paths. Due to the different lengths of these two paths, the arrival times are also different. However, if the two paths are too close in length, the arrival times are minimal, making it difficult for the receiver to distinguish the two arrival times. The ability to distinguish multiple targets in time generally depends on the signal detection algorithm and the bandwidth of the transmitted signal. Generally speaking, a larger bandwidth improves the ability to distinguish multiple targets.

[0112] To improve the ability to distinguish multiple sensing targets in wireless sensing scenarios, sensing in the millimeter wave band can be considered. The millimeter wave band is generally considered to be an electromagnetic wave band with a frequency range of 30 GHz to 300 GHz. Compared with the traditional sub-6 GHz band, millimeter waves have wider spectrum resources and smaller wavelengths, resulting in smaller antennas and easier integration of multiple antennas. However, compared with the traditional sub-6 GHz band, the channel attenuation in the millimeter wave band is very large. Devices performing wireless sensing in the millimeter wave band can, for example, use beamforming or other technologies to focus signal energy in a specific direction, that is, a specific beam direction, thereby increasing the equivalent channel gain of the transmitter-sensing target-receiver link, thereby improving the signal-to-noise ratio of the signal scattered by the scatterer received by the receiver, thereby improving the accuracy and performance of wireless sensing. For example, in Figure 1, if device A aligns its transmitting beam toward P1 and device B aligns its receiving beam toward P1, the quality of the communication link between devices A and B can be improved. If device A aligns its transmitting beam toward P2 and device B aligns its receiving beam toward P2, the perceived signal-to-noise ratio of devices A and B for scatterer C can be improved. If device A aligns its transmitting beam toward P3 and device B aligns its receiving beam toward P3, the perceived signal-to-noise ratio of devices A and B for scatterer D can be improved.

[0113] When using beamforming technology to achieve signal transmission in a specific beam direction, the weights on each antenna element can generally be adjusted according to the specific antenna array arrangement and the desired beam pattern. The weights can include amplitude and phase, but to reduce cost and implementation complexity, the weights can be limited to complex values ​​with a constant modulus (for example, 1), that is, only phase adjustment is performed. This method can be understood as designing a filter in the spatial domain to achieve signal energy focusing in a specific angular direction. Therefore, the beam can generally be understood as a spatial filter, spatial filter parameters, spatial parameters, etc. Furthermore, the corresponding transmit beam can be a transmit spatial filter, transmit spatial filter parameters, transmit spatial parameters, etc., and the corresponding receive beam can be a receive spatial filter, receive spatial filter parameters, receive spatial parameters, etc.

[0114] In communication scenarios, since the transceiver may not know the other party's position and direction in advance, for example, beam training can be used to achieve beam alignment to improve subsequent communication performance. Usually, in wireless perception scenarios, the transceiver and receiver cannot know the position of the target to be perceived in advance. Therefore, for example, beam training can also be used to achieve beam alignment of the perception target to improve subsequent perception performance.

[0115] Furthermore, in communication scenarios, the receiver typically determines the receive beam independently. For example, a transmitter can indicate a transmit beam to the receiver (e.g., by indicating a reference signal identifier), and the receiver can then determine a receive beam based on historical beam training results for that beam. However, in perception scenarios, different receive beams may be oriented toward different targets. Therefore, the receive beam used by the receiver may not match the direction of the target the transmitter intends to perceive.

[0116] It should be noted that the communication method of the embodiment of the present disclosure can realize wireless perception. The communication method of the embodiment of the present disclosure can also be understood as a wireless perception method or a communication perception integrated method.

[0117] Figures 2A to 2C schematically illustrate a schematic diagram of the system architecture of the communication method, wireless sensing method, and communication-sensing integrated method according to an embodiment of the present disclosure, which can be understood as a schematic diagram of the communication system, wireless sensing system, and communication-sensing integrated method according to an embodiment of the present disclosure. It should be noted that Figures 2A to 2B are only examples of the system architecture to which the communication method of the embodiment of the present disclosure can be applied, to help those skilled in the art understand the technical content of the present disclosure, but do not mean that the embodiment of the present disclosure cannot be applied to other devices, systems, environments, or scenarios.

[0118] FIG2A schematically shows a schematic diagram of a system architecture of a communication method according to an embodiment of the present disclosure.

[0119] As shown in FIG. 2A , a system architecture of the communication method according to an embodiment of the present disclosure may include: a first device 201 , a second device 202 , and a third device 203 .

[0120] Exemplarily, the first device and the second device may each be, for example, a base station or a terminal device, and the third device may be, for example, one of a base station, a terminal device, and a core network device. For example, the first device may be a terminal device, the second device may be a base station, and the third device may be a core network device. For another example, the first device may be a terminal device, the second device may be another terminal device, and the third device may be a base station or another terminal device. For another example, the first device may be a base station, the second device may be a terminal device, and the third device may be a core network device. For another example, the first device may be a base station, the second device may be another base station, and the third device may be a core network device.

[0121] In terms of logical functions, the base station can be understood as a scheduling entity, and the terminal device can be understood as a subordinate entity. The scheduling entity is responsible for scheduling and controlling the transmission of service data, and the subordinate entity executes service data transmission based on the control of the scheduling entity.

[0122] In terms of physical form, a base station may include, but is not limited to, a macro base station, a micro base station, a transmission reception point (TRP), a baseband unit (BBU), and a remote radio unit (RRU). A micro base station is sometimes also referred to as a small cell.

[0123] Terminal devices may include but are not limited to mobile phones, tablet computers, laptop computers, wearable devices (smart watches, smart bracelets, smart helmets, smart glasses, etc.), and other communication devices with wireless access capabilities, such as various Internet of Things devices, including smart home devices (smart meters, smart appliances, etc.), smart vehicles, etc.

[0124] Core network equipment is responsible for tasks such as user data transmission, signaling delivery, and access control. Core network equipment includes mobile switching centers, service support systems, data storage and management systems, IP (Internet Protocol) packet data network elements, and mobile Internet gateways. These devices support user calls, data transmission, and service processing. Examples of core network equipment include routers, switches, and servers.

[0125] In the example of FIG. 2A , the communication system according to the embodiment of the present disclosure includes a first device 201 , a second device 202 , and a third device 203 .

[0126] FIG2B schematically shows a diagram of another system architecture of a communication method according to an embodiment of the present disclosure.

[0127] Different from the system architecture shown in FIG2A , the system architecture shown in FIG2B includes a first device 201 and a second device 202 . That is, in the example of FIG2B , the communication system according to the embodiment of the present disclosure includes: a first device 201 and a second device 202 .

[0128] Exemplarily, both the first device 201 and the second device 202 may be a base station (BS) or a user equipment (UE). For example, the first device may be a terminal device, and the second device may be a base station. For another example, the first device may be a terminal device, and the second device may be another terminal device. For another example, the first device may be a base station, and the second device may be a terminal device. For another example, the first device may be a base station, and the second device may be another base station.

[0129] In the example of FIG2B , the first device may additionally include the functionality of the third device in FIG2A , or the second device may additionally include the functionality of the third device in FIG2A . The specific functionality of the third device will be described in detail in subsequent embodiments. It can also be understood that the third device is the same device as the first device, or the third device is the same device as the second device.

[0130] FIG2C schematically shows a diagram of another system architecture of a communication method according to an embodiment of the present disclosure.

[0131] 2A or 2B , the system architecture shown in FIG2C includes a first device 201 and a third device 203. That is, in the example of FIG2C , the communication system of the embodiment of the present disclosure includes: a first device 201 and a third device 203.

[0132] Exemplarily, the first device 201 and the third device 203 may each be a base station, a terminal device, or a core network device. For example, the first device 201 may be a terminal device, and the third device 203 may be a core network device. For another example, the first device 201 may be a terminal device, and the third device 203 may be a base station or other terminal device. For another example, the first device 201 may be a base station, and the third device 203 may be a core network device. For another example, the first device 201 may be a base station, and the third device 203 may be a core network device.

[0133] For example, the first device may additionally include the functionality of the second device, or the third device may additionally include the functionality of the second device. The specific functionality of the second device will be described in detail in subsequent embodiments. It can also be understood that the second device and the first device are the same device, or that the second device and the third device are the same device.

[0134] It should be noted that the first, second, and third devices can be understood as communication devices, wireless sensing devices, or integrated communication and sensing devices. Furthermore, the first, second, and third devices can all be physical or virtual. A physical form can, for example, be an independent physical device or a radio frequency transceiver chip within an independent physical device. A virtual form can, for example, be a computer program that implements the corresponding operation.

[0135] Figure 3 schematically illustrates an interaction diagram of the communication method according to an embodiment of the present disclosure based on the above system architecture. The operations performed by the first device, the third device, and the second device in conjunction with Figure 3 will be described in detail below.

[0136] As shown in FIG3 , the communication method performed by the communication system according to the embodiment of the present disclosure may include, for example, operations S31 - S33 .

[0137] In operation S31, the third device transmits configuration information to the first device.

[0138] In this operation, the first device may receive configuration information from the third device.

[0139] Exemplarily, the configuration information may include configuration information of one or more reference signal resources.

[0140] Reference signal resources are resources used to send and / or receive reference signals. Resources may include one or more of time domain resources, frequency domain resources, and code domain resources. Therefore, the configuration information of reference signal resources may include configuration information of one or more of time domain resources, frequency domain resources, and code domain resources. Generally speaking, a reference signal and a reference signal resource are associated with each other, so the configuration information of the one or more reference signal resources mentioned above can also be understood as the configuration information of one or more reference signals. In this document, the two concepts of "reference signal resource" and "reference signal" can be used interchangeably in some scenarios. For example, "associated with reference signal resource x" can be understood or replaced with "associated with reference signal x", "indication information of reference signal resource x" can be understood as "indication information of reference signal x", and "information of reference signal resource x" can be understood as "information of reference signal x", etc.

[0141] For any reference signal resource, it can be a periodic reference signal resource or a reference signal resource that includes multiple time units in the time dimension (a time unit can be, for example, a symbol). After the first device receives the periodic reference signal, it can determine information such as the Doppler frequency corresponding to the scatterer in the sensing environment. In addition, the periodic reference signal resource or the reference signal resource that includes multiple time units in the time dimension can be split into multiple reference signal resources. In this case, the split reference signal resources can be equivalently associated as a group or a set. After the first device subsequently receives the reference signal, it can determine information such as the Doppler frequency corresponding to the reference signal resource. In other words, the configuration information of the reference signal resource can configure multiple reference signal resources, and these multiple reference signal resources can equivalently constitute one or more periodic reference signal resources in the embodiment of this application. Alternatively, for any reference signal resource, it can also be a non-periodic reference signal resource or include only one time unit in the time dimension.

[0142] Exemplarily, the configuration information of the reference signal resource may further include: information about at least one transmit beam and / or information about at least one receive beam. Each of the at least one reference signal is associated with one of the at least one transmit beams, and / or each of the at least one reference signal is associated with one of the at least one receive beams. The beam information may specifically include one or more of the following: a beam identifier, direction, and beam width. For example, the third device may pre-configure one or more beams (either transmit or receive beams). The configuration information for each beam may include the beam identifier, beam direction (including horizontal and vertical directions), and beam width (e.g., a beam width that is attenuated by 3 dB relative to the beam direction, including horizontal and vertical widths). The device then indicates that a reference signal resource is associated with a previously configured beam (e.g., indicating that the reference signal resource is associated with a beam identifier). Alternatively, the device may directly configure the reference signal resource to be associated with a beam, i.e., directly indicate information such as the direction or beam width of the beam associated with the reference signal resource. The above method can also expand the configuration of the beam into the configuration of the beam pair, for example, pre-configuring one or more beam pairs, each beam pair including a transmitting beam or a receiving beam, and the configuration information of each beam pair may include the identifier of the beam pair, the information of the transmitting beam (the identifier, direction or width of the transmitting beam), and the information of the receiving beam (the identifier, direction or width of the receiving beam); and then indicating that a reference signal resource is associated with a previously configured beam pair (for example, indicating that the reference signal resource is associated with the identifier of a beam pair); or directly configuring the reference signal resource to be associated with a beam pair, that is, directly indicating information such as the direction or beam width of the transmitting beam and the receiving beam of the beam pair associated with the reference signal resource. Furthermore, beam associations between reference signal resources may also be used to configure beam information. For example, the configuration information may configure reference signal resource A and reference signal resource B to have a transmit beam spatial association relationship. This may determine that the second device uses the same or similar beam when transmitting reference signal resource A and reference signal resource B. Alternatively, the configuration information may configure reference signal resource A and reference signal resource B to have a receive beam spatial association relationship. This may determine that the first device uses the same or similar beam when receiving reference signal resource A and reference signal resource B. Alternatively, the configuration information may configure reference signal resource A and reference signal resource B to have a receive beam spatial association relationship and a transmit beam spatial association relationship. This may determine that the second device uses the same or similar beam when transmitting reference signal resource A and reference signal resource B, and the first device uses the same or similar beam when receiving reference signal resource A and reference signal resource B. The beam association relationship between reference signal resources may refer to the Type D quasi-co-location relationship in a 5G network.

[0143] It should be noted that according to the communication method of the embodiment of the present disclosure, the reference signal is associated with the beam. The meaning of "association" is that the corresponding reference signal can be sent in a directionally and centrally manner through the corresponding beam. It can also be understood that the beam is a way of sending and receiving the reference signal.

[0144] When the first and second devices transmit and receive reference signals based on beams, the signal-to-noise ratio (SNR) or signal-to-interference-and-noise ratio (SINR) of scatterer perception measurement results can be improved. Furthermore, configuring beam information enables the first and second devices to scan and perceive scatterers in specific directions and locations.

[0145] For example, the association relationships between transmit beams, receive beams, and reference signals can be one-to-many, many-to-one, or many-to-many. Specifically, different reference signals can be associated with different transmit beams or the same transmit beam, different reference signals can be associated with different receive beams or the same receive beam, and different reference signals can be associated with different transmit beam and receive beam pairs or the same transmit beam and receive beam pair.

[0146] Exemplarily, when the third device and the second device are different devices, the third device can also, for example, send configuration information of reference signal resources to the second device, where the second device is a device that subsequently sends reference signals on the above-mentioned one or more reference signal resources, that is, the third device can configure one or more reference signal resources for the first device and the second device for the first device and the second device to send and receive one or more reference signals.

[0147] Exemplarily, the configuration information may also instruct the first device to report information of a reference signal that satisfies a first condition. The specific content of the first condition will be described in detail below. In general, when the measurement result of the reference signal satisfies the first condition, it can be considered that the measurement result of the reference signal includes perception information of a scatterer or a moving scatterer, or includes perception information of a scatterer or a moving scatterer with a higher probability, or includes scatterers within a specific distance range or a specific moving speed range, etc.

[0148] Exemplarily, the configuration information may also include at least one of the following: a first power threshold, a first amplitude threshold, a first time delay range (which may also be understood as a time range), a second power threshold, a second amplitude threshold, a first Doppler frequency range (which may also be understood as a frequency range), a third power threshold, a third amplitude threshold, a first probability threshold, a second probability threshold, a similarity threshold, a change amount (which may also be understood as a difference) threshold (the specific explanation of each item of information included in the configuration information will also be described in detail below). For example, the configuration information may also include at least one of the following: a first power threshold, a first amplitude threshold, a first time delay range, a second power threshold, a second amplitude threshold, a first Doppler frequency range, a third power threshold, and a third amplitude threshold. For example, at least one of the first probability threshold, the second probability threshold, the similarity threshold, and the change amount threshold may be indicated by other means such as RRC (Radio Resource Control) signaling.

[0149] For example, the “ranges” defined in the embodiments of the present disclosure, such as the first time delay range and the first Doppler frequency range, may correspond to an open interval, a closed interval, or a semi-open and semi-closed interval.

[0150] Exemplarily, the configuration information may further instruct the first device to report at least one of the following to the third device for the target reference signal: the reference signal receiving power (RSRP) of the reference signal, the signal power of the reference signal, the Doppler frequency of the reference signal (which may be one or more frequencies), the delay of the reference signal (which may be one or more delays), the receiving beam information of the reference signal, the probability of the existence of a scatterer corresponding to the reference signal, the probability of the existence of a moving scatterer corresponding to the reference signal, the delay spectrum, Doppler spectrum, delay-Doppler spectrum corresponding to the reference signal, the power and / or amplitude of the reference signal received through a certain path, one or more arrival angles measured by the reference signal, and other information. The target reference signal is a reference signal that meets the first condition. Optionally, if there are multiple target reference signals, the first device may report the above information separately for multiple target reference signals.

[0151] It should be noted that multiple configurations can be performed through configuration information. The above schematically shows an example in which configuration information indicates multiple configurations or configuration information includes different configuration contents. The third device can, for example, send the above configuration information to the first device once or multiple times. Optionally, there may also be multiple third devices that send one or more of the above configuration information to the first device, that is, the above configuration information can be determined by multiple third devices and then sent to the first device. For example, the third device a determines the configuration information of the reference signal resource and sends it to the first device, and the third device b determines the configuration information related to the first condition (for example, it may include one or more of the first power threshold, the first delay range, the second power threshold, the third power threshold, the first Doppler frequency range, the first probability threshold, the second probability threshold, the similarity threshold, and the change threshold) and sends it to the first device.

[0152] It should also be noted that any information included in the configuration information can be predefined or preconfigured, for example, it can be predefined by a standard or preconfigured in the first device or in a chip of the first device. Therefore, operation S31 is an optional step. For example, the configuration information can include: a first power threshold, a first delay range, a second power threshold, a third power threshold, a first probability threshold, a second probability threshold, a similarity threshold, and a change threshold. The first Doppler frequency range can be predefined or preconfigured. For another example, the configuration information can include: a first power threshold, a first delay range, a second power threshold, and a third power threshold. The first Doppler frequency range, the first probability threshold, the second probability threshold, the similarity threshold, and the change threshold can be predefined or preconfigured. In addition, when the first device and the third device are the same device, "the third device sending configuration information to the first device" can be understood as an internal implementation within the device, or can also be understood as performing a specific operation without being explicitly displayed.

[0153] Furthermore, when the third device and the second device are the same device, this operation can also be understood as the second device sending configuration information to the first device. In this operation, the first device can receive the configuration information from the second device, or some of the information can be sent by the second device and some by a third device different from the second device.

[0154] The specific configuration information can be configured through high-layer signaling, such as radio resource control layer signaling, or indicated by physical layer signaling, which can be indicated by control information. Of course, it can also be configured or indicated by other layer signaling, and the embodiments of the present application are not limited thereto.

[0155] Operation S31 can be understood as a configuration phase. For example, in the communication phase after the configuration phase, corresponding communication can be performed according to the specific configuration of the configuration phase.

[0156] Operation S32 and operation S33 may be understood as a communication stage (or a perception stage, or a communication perception stage).

[0157] As shown in FIG. 3 , in operation S32 , the second device transmits at least one reference signal; and the first device receives the at least one reference signal.

[0158] Exemplarily, the second apparatus may determine one or more reference signal resources based on the configuration information of the reference signal resources in S31, and then send one or more reference signals on these reference signal resources. Correspondingly, the first apparatus may determine one or more reference signal resources based on the configuration information of the reference signal resources in S31, and then receive one or more reference signals on these reference signal resources.

[0159] Exemplarily, the first device can directly receive at least one reference signal. For example, if the first device is a terminal device, the terminal device can directly receive at least one reference signal. In addition, the first device can also indirectly receive at least one reference signal through other means. For example, when the first device is a signal processing chip in the terminal device, the signal processing chip can receive at least one reference signal through the radio frequency transceiver device in the terminal device. That is, after the radio frequency transceiver device in the terminal device receives at least one reference signal, it can forward the at least one reference signal (in some cases, the reference signal can, for example, undergo certain processing steps of the radio frequency transceiver device) to the signal processing chip. It can be understood that the signal processing chip "indirectly" receives at least one reference signal. Alternatively, the first device can also receive the reference signal through an external communication interface, which can also be understood as the first device "indirectly" receiving at least one reference signal.

[0160] Exemplarily, if the configuration information in S31 includes beam configuration information, the second device can use its associated transmit beam when sending each reference signal, and the first device can use its associated receive beam when receiving each reference signal.

[0161] FIG4 schematically shows a schematic diagram corresponding to FIG1 of transmitting a reference signal and receiving a reference signal by transmitting a beam and receiving a beam.

[0162] In the example of FIG. 4 , the first device is device B, for example, and the second device is device A, for example.

[0163] The second device can transmit a reference signal to the first device, for example, via a transmit beam. Figure 4 schematically illustrates a specific example of three transmit beams, namely transmit beams 1 through 3, and three receive beams, namely receive beams 1 through 3. For example, the reference signal resource configuration information in S31 includes nine reference signal resources, namely RS1-RS9, where RS1 is associated with transmit beam 1 and receive beam 1, RS2 is associated with transmit beam 1 and receive beam 2, RS3 is associated with transmit beam 1 and receive beam 3, and so on. That is, each reference signal resource is associated with one of the three transmit beams and one of the three receive beams. Hereinafter, RSx-yz will be used to indicate that reference signal resource x is associated with transmit beam y and receive beam z. Thus, there are nine reference signal resources, namely RS1-11, RS2-12, RS3-13, RS4-21, RS5-22, RS6-23, RS7-31, RS8-32, and RS9-33, and their associated transmit beams and receive beams.

[0164] In combination with the communication method of the above-mentioned embodiment of the present disclosure for a wireless sensing scenario, the second device sends a reference signal to the first device through a transmitting beam, so that the reference signal can be sent in a directionally and centrally manner, and the first device receives the reference signal through a receiving beam, so that the reference signal can be received in a directionally and centrally manner.

[0165] For example, in the example of Figure 4, reference signal resource RS1 is associated with transmit beam 1 and receive beam 1. The directions of transmit beam 1 and receive beam 1 are both aligned with straight path P1. Therefore, the signal-to-noise ratio and signal power of the signal received on reference signal resource RS1 are high. However, since there is no scatterer on path P1, the combination of transmit beam 1 and receive beam 1 is not suitable for wireless sensing, but is suitable for communication. Reference signal resource RS5 is associated with transmit beam 2 and receive beam 2, and is aligned with transmission path P2. Scatterer C is located on transmission path P2. Therefore, reference signal resource RS5 (or the combination of transmit beam 2 and receive beam 2) is suitable for wireless sensing of scatterer C. Reference signal resource RS9 is associated with transmit beam 3 and receive beam 3, and is aligned with transmission path P3. Scatterer D is located on transmission path P3. Therefore, reference signal resource RS9 (or the combination of transmit beam 3 and receive beam 3) is suitable for wireless sensing of scatterer D. Reference signal resource RS2 is associated with the combination of transmit beam 1 and receive beam 2. The directions of transmit beam 1 and receive beam 2 do not match, meaning they are not aligned with the same transmission path. Therefore, the signal-to-noise ratio and signal power of reference signal resource RS2 received by first device B are low. Therefore, the combination of transmit beam 1 and receive beam 2 is unsuitable for wireless sensing or communication. Similarly, other beam combinations (or reference signals, reference signal resources) are also unsuitable for wireless sensing and communication.

[0166] In operation S33, the first device reports information of the target reference signal and / or beam information associated with the target reference signal to the third device.

[0167] The target reference signal is a reference signal that meets the first condition. The determined target reference signal may be one or more.

[0168] Exemplarily, the target reference signal information reported by the first apparatus may include identification information of the target reference signal. As described above, since reference signals and reference signal resources are generally associated with each other, information about the reference signal resource where the target reference signal is located may also be reported, that is, identification information of the target reference signal resource may also be reported. The target reference signal resource is the reference signal resource where the target reference signal is located.

[0169] Exemplarily, the beam information associated with the target reference signal reported by the first device may include one or more of the transmit beam, receive beam, or transmit-receive beam pair associated with the target reference signal. For example, the first device may report one or more of the identifier of the transmit beam associated with the target reference signal, the direction of the transmit beam, the width of the transmit beam, the identifier of the receive beam, the direction of the receive beam, the width of the receive beam, and the identifier of the transmit-receive beam pair. For another example, the first device may report one or more of the identifier of a reference signal resource that has a receive beam spatial association relationship with the target reference signal resource, the identifier of a reference signal resource that has a transmit beam spatial association relationship with the target reference signal resource, and the identifier of a reference signal resource that has a receive beam spatial association relationship and a transmit beam spatial association relationship with the target reference signal resource.

[0170] The beam information associated with the target reference signal may also be used as the target reference signal information, that is, the target reference signal information reported by the first device to the third device may include the beam information associated with the target reference signal reported by the first device to the third device.

[0171] Exemplarily, the first device may report information of a target reference signal and information of a beam associated with the target reference signal.

[0172] The first condition may include, for example, at least one of the following conditions 1 to 7.

[0173] Condition 1: The presence of a scatterer is determined based on the target reference signal. This condition can also be understood as the target reference signal being scattered or reflected by a scatterer before reaching the first device, or part of the power or energy of the target reference signal being scattered or reflected by a scatterer before reaching the first device, or a scatterer existing on the transmission path of the target reference signal. For example, the first device and the second device use different beams to transmit and receive the reference signal RS. i (where RS iis one of the at least one reference signal sent by the second device in S32), the reference signal RS may be changed i Energy and power distribution on different transmission paths, for example, when the first device and the second device align their beams with the straight path, the reference signal RS i The main energy and power of reaches the first device through the direct path, so the reference signal RS received by the first device i The power of the reference signal RS i If the signal is transmitted to the first device through a direct path, the first device will i The measurement results mainly include the characteristics of the direct path channel itself of the first device and the second device, and basically do not include the characteristics of other scatterers. In this case, the reference signal does not meet condition 1. For example, when the first device and the second device align their beams with a transmission path scattered or reflected by a scatterer, the main energy and power of the reference signal reaches the first device through the scattering path. In this case, the first device has no effect on the RS. i The measurement results mainly include the characteristics of the scattering path channel of the first device and the second device. The characteristics of the scattering path channel actually reflect the characteristics of the scatterer. At this time, the reference signal meets condition 1. Specifically, the first device can use an algorithm such as presence detection to determine whether a scatterer exists based on the measurement results of the reference signal. For example, in Figure 4, the first device can detect the scatterer when receiving RS5 (corresponding to path P2) and RS9 (corresponding to path P3). Therefore, RS5 and RS9 are reference signals that meet condition 1. Specifically, the reference signal RS5 is associated with transmit beam 2 and receive beam 2, and is aligned with the transmission path P2. The scatterer C is located on the transmission path P2. Therefore, the reference signal RS5 (or the combination of transmit beam 2 and receive beam 2) is suitable for wireless sensing of the scatterer C. The reference signal RS9 is associated with transmit beam 3 and receive beam 3, and is aligned with the transmission path P3. The scatterer D is located on the transmission path P3. Therefore, the reference signal RS9 (or the combination of transmit beam 3 and receive beam 3) is suitable for wireless sensing of the scatterer D.

[0174] Condition 2. The presence of a moving scatterer is determined based on the target reference signal. This can be understood as meaning that the target reference signal reaches the first device after being scattered or reflected by a moving scatterer, or that part of the power or energy of the target reference signal reaches the first device after being scattered or reflected by a moving scatterer, or that a moving scatterer exists in the transmission path of the target reference signal. For example, if the first device and the second device align their beams along a transmission path that is scattered or reflected by a moving scatterer, then the main energy and power of the reference signal reaches the first device through this scattering path. In this case, the first device will receive the RS signal. iThe measurement results mainly include the characteristics of the scattering path channel of the first device and the second device, and the characteristics of the scattering path channel actually reflect the characteristics of the mobile scatterer. Specifically, the first device can use algorithms such as existence detection to determine whether there is a scatterer, and then calculate the Doppler frequency by detecting the measurement results of the reference signal to determine whether the scatterer is moving. For example, in Figure 4, the first device can detect the moving scatterer when receiving RS5 (corresponding to path P2), so RS5 is a reference signal that meets condition 2. The first device can detect the scatterer when receiving RS9 (corresponding to path P3), but the scatterer is in a stationary state, so RS9 is a reference signal that does not meet condition 2.

[0175] Condition 3. The probability of the existence of a scatterer is greater than or equal to the first probability threshold value determined based on the target reference signal. It can be understood as the probability that the target reference signal reaches the first device after being scattered or reflected by a scatterer, or the probability that part of the power or energy of the target reference signal reaches the first device after being scattered or reflected by a scatterer, or the probability that a scatterer exists on the transmission path of the target reference signal is greater than or equal to the first probability threshold value. Exemplarily, the probability of the existence of a scatterer can be determined using algorithms such as presence detection. For example, in Figure 4, the first device can detect the scatterer when receiving RS5 (corresponding to path P2) and RS9 (corresponding to path P3) and the probability of the existence of the scatterer is greater than or equal to the first threshold value, so RS5 and RS9 are reference signals that meet condition 3.

[0176] Condition 4. The probability of the existence of a moving scatterer determined based on the target reference signal is greater than or equal to the second probability threshold. It can be understood as the probability that the target reference signal reaches the first device after being scattered or reflected by a moving scatterer, or the probability that part of the power or energy of the target reference signal reaches the first device after being scattered or reflected by a moving scatterer, or the probability that a moving scatterer exists on the transmission path of the target reference signal is greater than or equal to the first probability threshold. Exemplarily, the probability of the existence of a scatterer can be determined by using an algorithm such as presence detection, and then the Doppler frequency is calculated based on the measurement result of the reference signal to determine whether the scatterer moves. For example, in Figure 4, the first device can detect a moving scatterer when receiving RS5 (corresponding to path P2), so RS5 is a reference signal that meets condition 4.

[0177] Condition 5. The first signal power obtained based on the measured target reference signal is greater than or equal to the first power threshold, and the first signal power is the signal power within the first time delay range. Alternatively, the first signal amplitude (or sum of amplitudes) obtained based on the measured target reference signal is greater than or equal to the first amplitude threshold, and the first signal amplitude (or sum of amplitudes) is the amplitude (or sum of amplitudes) within the first time delay range. Since signal power can generally be determined by the square of the signal amplitude, the two can be easily converted to each other. The following description mainly uses power as an example.

[0178] 1, due to the multipath effect, when there is multipath in the transmission environment, a reference signal RS i The signal can be transmitted from the second device to the first device via multiple paths, such as direct paths and transmission paths scattered or reflected by scatterers. Different transmission paths have different time delays and gain coefficients. Generally, the time delay of the direct path is smaller and the gain coefficient is larger, while the time delay of the transmission path scattered or reflected by scatterers is larger and the gain coefficient is smaller. The first device receives the reference signal RS i The delay power spectrum can be obtained by processing the measurement results of the reference signal. The delay power spectrum can reflect the delay distribution of different transmission paths and the power distribution corresponding to each delay (positively correlated with the absolute value of the amplitude). In addition, when the second device and the first device use different beams to transmit and receive the reference signal RS i The reference signal RS can be changed i Energy and power distribution on different transmission paths, for example, when the beam is aligned with the straight path, the reference signal RS i The main energy and power of reaches the first device through the direct path, so the reference signal RS received by the first device i The power of the reference signal RS i The reference signal is transmitted to the first device through the time delay corresponding to the direct path (or a time delay close to the direct path delay), or vice versa, if the first device can distinguish multiple paths based on the measurement result of the reference signal, then the power or energy of the reference signal received through the direct path will be larger; for example, when the beam is aligned with the transmission path scattered or reflected by a scatterer, the main energy and power of the reference signal reaches the first device through the scattering path, so the reference signal RS received by the first device is i The power of the reference signal RS i After the scattering path delay (or a delay of a similar length to the scattering path delay) is transmitted to the first device, or conversely, if the first device can transmit the reference signal RS i The measurement results distinguish multiple paths, and the reference signal RS is received through the scattering path. iSince the transmission delay of different paths corresponds to the sum of the distances between the associated scatterer and the first device and the second device, if only scatterers within a specific distance range are to be sensed, the reference signal RS is sent and received through a specific beam. i After that, the first device can measure the signal power within a specific delay range (corresponding to the first delay range mentioned above). If the signal power within the delay range is large (the signal power is large, for example, greater than or equal to the first power threshold), it proves that the reference signal RS i A relatively large amount of power passes through one or more scatterers to reach the first device, and the one or more scatterers are within the above-mentioned specific distance range.

[0179] Optionally, when the first power threshold is not configured or preconfigured, the condition may also be converted into: identifying, based on the measurement of the target reference signal, that the delay of a certain path is within the first delay range.

[0180] Condition 6. The second signal power obtained based on the measured target reference signal is greater than or equal to the second power threshold, and the second signal power is within the first Doppler frequency range. Alternatively, the second signal amplitude (or sum of amplitudes) obtained based on the measured target reference signal is greater than or equal to the second amplitude threshold, and the second signal amplitude (or sum of amplitudes) is within the first Doppler frequency range. Since signal power can generally be determined by the square of the signal amplitude, the two can be easily converted to each other. The following description mainly uses power as an example.

[0181] 1, due to the multipath effect, when there is multipath in the transmission environment, a reference signal RS i The signal can be transmitted from the second device to the first device via multiple paths, such as a direct path and a transmission path scattered or reflected by a scatterer. Different transmission paths have different Doppler frequencies and gain coefficients. i Post-reference signal RS i The Doppler power spectrum can be obtained by processing the measurement results. The Doppler power spectrum can reflect the Doppler frequency distribution of different transmission paths and the power distribution corresponding to each Doppler frequency (positively correlated with the absolute value of the gain coefficient). In addition, when the second device and the first device use different beams to transmit and receive the reference signal RS i The reference signal RS can be changed i Energy and power distribution on different transmission paths, for example, when the beam is aligned with the straight path, the reference signal RS i The main energy and power of reaches the first device through the direct path, so the reference signal RS received by the first device iThe Doppler frequency determined later is mainly related to the characteristics of the direct path. When the first device and the second device are both stationary and there is no deviation in the carrier frequency between the two devices, the main Doppler frequency corresponding to the direct path is zero. For example, when the beam is aimed at a transmission path scattered or reflected by a scatterer, the reference signal RS i The main energy and power of reaches the first device through the scattering path, so the reference signal RS received by the first device i The Doppler frequency determined later is mainly related to the characteristics of the scattering path. When the first device and the second device are both stationary and there is no deviation in the carrier frequency between the two devices, the main Doppler frequency corresponding to the scattering path is mainly related to the movement speed (including size and direction) or frequency (such as the frequency of human breathing) of the scatterer. Therefore, if you only want to sense scatterers within a specific movement speed range or a specific movement frequency range (for example, if you want to determine whether there is a person through breathing detection), the reference signal RS is sent and received through a specific beam. i After that, the first device can measure the signal power within a specific Doppler frequency range (corresponding to the first Doppler frequency range mentioned above). If the signal power within the Doppler frequency range is large (the signal power is large, for example, greater than or equal to the second power threshold), it proves that the reference signal RS i More power passes through one or more scatterers to reach the first device, and the one or more scatterers are within the above-mentioned specific motion speed range or motion frequency range.

[0182] Optionally, when the second power threshold is not configured or preconfigured, the condition may also be converted into: identifying, based on the measurement target reference signal, that the Doppler frequency of a certain path is within the first Doppler frequency range.

[0183] Condition 7. The third signal power obtained based on the measured target reference signal is greater than or equal to a third power threshold, and the third signal power is the signal power within the first Doppler frequency range and the first time delay range. Alternatively, the third signal amplitude (or amplitude sum) obtained based on the measured target reference signal is greater than or equal to a third amplitude threshold, and the third signal amplitude (or amplitude sum) is the amplitude (or amplitude sum) within the first Doppler frequency range and a time delay range. Since signal power can generally be determined by the square of the signal amplitude, the two can be easily converted to each other. The following description mainly uses power as an example.

[0184] Optionally, when the third power threshold is not configured or preconfigured, the condition can also be converted into: identifying, based on the measurement target reference signal, that the Doppler frequency of a certain path is within the first Doppler frequency range, and the delay of the path is within the first delay range.

[0185] It should be noted that the first condition may include any one of the above seven conditions. Thus, after the first device receives the first configuration information, it may receive any RS i Substitute at least one of the conditions 1 to 7 included in the first condition to determine the reference signal RS i Whether the first condition is met, the reference signal RS i If the first condition is met, the reference signal RS is reported i information.

[0186] The first condition may include only one of the above seven conditions, or may include multiple of the above seven conditions.

[0187] For example, the first condition may include condition 1 and condition 3 of the above seven conditions. Condition 1 can determine the presence of a scatterer, and condition 3 can improve the accuracy of determining the scatterer. Combined with condition 1 and condition 3, information of a target reference signal suitable for wireless sensing can be accurately reported from at least one reference signal.

[0188] For another example, the first condition may include condition 1, condition 3, and condition 5 of the above seven conditions. Condition 1 can determine the presence of a scatterer, condition 3 can improve the accuracy of the scatterer by using a first probability threshold, and condition 5 can determine the presence of a scatterer on the path of transmitting the target reference signal from the delay dimension.

[0189] For another example, the first condition may include condition 2 and condition 4 of the above 7 conditions. Condition 2 may determine the presence of a moving scatterer, and condition 4 may improve the accuracy of determining the moving scatterer.

[0190] For another example, the first condition may include conditions 2, 4, and 6 of the seven conditions described above. Condition 2 may determine the presence of a moving scatterer, and condition 4 may improve the accuracy of determining the presence of a moving scatterer. Condition 6 may determine, from the Doppler frequency dimension, that a moving scatterer exists along the path along which the target reference signal is transmitted.

[0191] Exemplarily, the first signal power may be calculated by, for example, the following formula (1) or formula (2):

[0192] Where Γ represents the first delay range, H k represents the channel response coefficient on the frequency domain unit (e.g., subcarrier) k determined according to the target reference signal measurement result, such as H kIt is the effective channel response coefficient measured on the frequency domain unit k included in the target reference signal resource, or the effective channel response coefficient measured on the frequency domain unit k included in the target reference signal resource in the absence of receiver noise, or the effective channel response coefficient measured and estimated on the frequency domain unit k included in the target reference signal resource and other resources, or the effective channel response coefficient measured and estimated on the frequency domain unit k included in the target reference signal resource and other resources in the absence of receiver noise. D represents a delay within the first delay range, N1 can be determined according to the bandwidth of the target reference signal resource, for example, the target reference signal resource is uniformly distributed in the frequency domain, each Z frequency domain units occupy one frequency domain unit, and a total of X frequency domain units are occupied, then N1 can be equal to ZX or Z(X-1), or N1 is the number of points when performing inverse discrete Fourier transform IDFT (for example, the number of points of inverse fast Fourier transform IFFT), A1 is a constant, for example, A1=1. ∑ D∈Γ (·) represents the sum of · corresponding to each delay D in Γ, ∫ D∈Γ (·) represents the integration of · corresponding to each delay D in Γ, ∑ k (·) represents the sum of · corresponding to each frequency domain unit k, exp represents the exponential function with the natural constant e as the base, and j is the imaginary unit, which can be defined as

[0193] For example, the first delay range Γ is the delay range normalized by 1 / B, and D is the delay normalized by 1 / B. For example, if the actual delay range is T1 to T2, the first delay range Γ may indicate D1 to D2, where D1 = T1 × B, D2 = T2 × B, and B represents the bandwidth of the target signal, for example, B = N1 × f scs , where f scs Indicates the size of the frequency domain unit, which can be the single width of the subcarrier. If the first delay range Γ is the range of the real delay, the above formulas (1) and (2) can also be adjusted to the following formulas (3) and (4) respectively: A1∫ D∈Γ |∑ k H k exp(j2πf k D)| 2 , (3) A1∑ D∈Г |∑ k H k exp(j2πf k D)| 2 , (4)

[0194] where f kThe frequency of the frequency domain unit k may be the actual frequency of the frequency domain unit k in the radio frequency, or the frequency of the frequency domain unit k in the baseband, or the starting frequency, center frequency, or ending frequency of the frequency domain unit k.

[0195] For example, f k =kf scs , or f k =f c +kf scs , where f c is the carrier frequency.

[0196] Exemplarily, the first delay range may be, for example, a delay range representing an absolute delay or a delay range representing a relative delay.

[0197] When the first delay range represents an absolute delay, for example, the first delay range corresponds to the absolute transmission delay of the reference signal from the second device to the first device. In this case, all values ​​in the first delay range are greater than or equal to 0. When the first delay range represents a relative delay, the first delay range corresponds to the difference between the time when the reference signal is transmitted from the second device to the first device and a certain time reference point. The time reference point may include, for example, the time point when the first device receives the reference signal via a direct path or a first path, for example, the first device's reception start position or reception end position in the time unit where the target reference signal resource is located.

[0198] In an orthogonal frequency division multiplexing (OFDM) system, a reference signal is typically carried on an OFDM symbol. The time reference point may also include, for example, the start point or end point of the OFDM symbol. The first, second, and third devices may determine and configure the time reference point, for example, through pre-measurement.

[0199] Exemplarily, the first delay range Γ may represent a continuous delay value within an interval or may be a plurality of discrete values ​​within the range. For example, when the first delay range is represented as D1-D2, the first delay range may include all delays in D1-D2, or may include only certain discrete values ​​in D1-D2. For example, under a normalized delay representation method, the first delay range may include integer values ​​in D1-D2, and under a non-normalized delay representation method, the first delay range may include delay values ​​in D1-D2 that are multiples of 1 / B.

[0200] Exemplarily, the first signal power may be determined based on the power of the path with the highest power among multiple target paths, where the multiple target paths are multiple paths determined based on the target reference signal, and the delay of each path in the multiple target paths is within the first delay range.

[0201] The delay is D p (D p The power of the path within the first delay range is determined according to the following formula (5):

[0202] When D p For the unnormalized delay, the above formula (5) can also be replaced by the following formula (6): A1|∑ k H k exp(j2πf k D p )| 2 (6)

[0203] The relevant parameters in the formula are explained above. It should be noted that when calculating the first signal power according to formula (5) or (6), condition 5 can also be understood as that among the multiple paths determined based on the target reference signal, there is a path whose delay is within the first delay range, and the power of the signal transmitted to the first device through this path is greater than or equal to the first power threshold.

[0204] It should be noted that when the first amplitude threshold is configured in condition 5, the above formula can also be converted into amplitude calculation accordingly, by simply replacing |.| 2 Replace with |.|.

[0205] The first time delay range may include only one continuous interval or multiple discontinuous intervals. For example, when you want to sense scatterers within multiple distance ranges, you can configure the first time delay range to include multiple discontinuous intervals. The intervals mentioned here may be open intervals, closed intervals, or semi-open and semi-closed intervals, and no limitation is made here.

[0206] When the target reference signal resource occupies multiple time units, the first signal power may also be combined with measurement results over the multiple time units to perform operations such as filtering, merging, and averaging.

[0207] Exemplarily, the second signal power may be calculated by, for example, the following formula (7) or formula (8): f∈Λ |∑ i H i exp(-j2πfT i )| 2 , (7) A2∑ f∈Λ |∑ i H i exp(-j2πfT i )| 2 (8)

[0208] Where Λ represents the first Doppler frequency range, H i represents the channel response coefficient on the time unit (e.g., OFDM symbol) i determined according to the target reference signal measurement result, such as H i is the effective channel response coefficient measured at the time unit i included in the target reference signal resource, or is the effective channel response coefficient measured at the time unit i included in the target reference signal resource in the absence of receiver noise, or is the effective channel response coefficient measured and estimated at the time unit i included in the target reference signal resource and other resources, or is the effective channel response coefficient measured and estimated at the time unit i included in the target reference signal resource and other resources in the absence of receiver noise, for example, H i It can be the channel response coefficient of the same frequency unit at different time units. The determination method of the frequency domain unit can refer to the relevant descriptions in formulas (1) and (2). f represents a Doppler frequency in the first Doppler frequency range, T i represents the time corresponding to the time unit i (the time unit i can be the receiving start position, receiving end position, or the middle position between the receiving start position and the receiving end position corresponding to the target reference signal resource received by the first device), T i It can be a time relative to a certain time reference point, for example, it can be a time relative to the start time of the most recent frame 0, or it can be a time unit occupied by the target reference signal resource. A2 is a constant, for example, A2=1. f∈Λ (·) represents the sum of · corresponding to each Doppler frequency f in Λ, ∫ f∈Λ (·) represents the integration of · corresponding to each Doppler frequency f in Λ, ∑ i (·) represents the sum of · corresponding to each time unit i, exp represents the exponential function with the natural constant e as the base, and j is the imaginary unit, which can be defined as

[0209] For example, when the target reference signal resource is uniformly distributed in time (or understood as being distributed at equal intervals), the above-mentioned Doppler frequency range and Doppler frequency can also be expressed in a normalized form. When the target reference signal resource occupies one time unit for every V time units, Y time units are used for calculating the Doppler frequency, and each time unit has a length of T. s , then the Doppler frequency range can be calculated as 1 / (VYT s ) is normalized. For example, the normalized Doppler frequency range is expressed as F1~F2, and the corresponding real Doppler frequency is F1 / (VYT S )~F2(VYT S), the second signal power can also be determined by the following formula, that is, the above formula (7) and formula (8) can also be adjusted to the following formula (9) and formula (10) respectively:

[0210] N2 can be determined by calculating the window duration of the Doppler frequency, for example, N2=VY or V(Y-1).

[0211] Optionally, the configuration information in S31 may further indicate which time units occupied by the target time unit are used to calculate the second signal power. For example, the configuration information may indicate that the most recent Y time units occupied by the most recent target reference signal resource are used when calculating the second signal power. Alternatively, this information may be determined by preconfiguration or predefinition.

[0212] Exemplarily, the second signal power is determined based on a power of a path with the highest power among multiple target paths, where the multiple target paths are multiple paths determined based on a target reference signal, and a Doppler frequency of each of the multiple target paths is within a first Doppler frequency range;

[0213] The power of the path with Doppler frequency f is determined according to the following formula (11): A2|∑ i H i exp(-j2πfT i )| 2 (11)

[0214] When f is the normalized Doppler frequency, the above formula (11) can also be replaced by the following formula (12):

[0215] The relevant parameters in the formula are explained above. It should be noted that when calculating the second signal power according to formula (11) or (12), condition 6 can also be understood as that among the multiple paths determined based on the target reference signal, there is a path whose Doppler frequency is within the first Doppler frequency range, and the power of the signal transmitted to the first device through this path is greater than or equal to the second power threshold.

[0216] It should be noted that when the second amplitude threshold is configured in condition 6, the above formula can also be converted into amplitude calculation accordingly, by simply replacing |.| 2 Replace with |.|.

[0217] The first Doppler frequency range may include only one continuous interval or multiple discontinuous intervals. For example, when you want to sense scatterers within multiple speed ranges, you can configure the first Doppler frequency range to include multiple discontinuous intervals. The intervals mentioned here may be open intervals, closed intervals, or semi-open and semi-closed intervals, and no limitation is given here.

[0218] When the target reference signal resource occupies multiple frequency units, the second signal power may be combined with measurement results on the multiple frequency units to perform operations such as filtering, merging, and averaging.

[0219] Exemplarily, the first Doppler frequency range is, for example, a Doppler frequency range predefined as non-zero.

[0220] A first Doppler frequency range of zero indicates that the radial velocity of the scatterer is zero. The Doppler frequency is used to determine the velocity of a scatterer. In some scenarios, sensing a stationary scatterer is not very meaningful. Therefore, the communication method of the disclosed embodiments can, for example, focus on moving scatterers using a non-zero first Doppler frequency range. Furthermore, the first Doppler frequency range can, for example, be predefined by a standard to reduce configuration overhead. The first Doppler frequency range can also be preconfigured.

[0221] Exemplarily, the third signal power may be calculated by, for example, the following formula (13) or formula (14):

[0222] Among them H i,k Represents the channel response coefficient on the time unit (e.g., OFDM symbol) i and the frequency domain unit k determined according to the target reference signal result. The determination method of the time unit and the frequency domain unit can refer to the relevant description above. A3 is a constant, for example, A3 = 1. The description of the other symbols in the formula can refer to the description in the above formulas (1) to (12). For each variation of the formula, refer to the above description and will not be repeated here.

[0223] Exemplarily, the third signal power is determined based on the power of a path with the highest power among multiple target paths, where the multiple target paths are multiple paths determined based on a target reference signal, and a Doppler frequency of each of the multiple target paths is within a first Doppler frequency range, and a time delay of each of the multiple target paths is within a first time delay range.

[0224] The power of a path with Doppler frequency f and delay D is determined according to the following formula (15):

[0225] Formula (15) can also have other variations as in the previous article, which will not be described here.

[0226] It should be noted that when calculating the third signal power according to formula (15), condition 7 can also be understood as that among the multiple paths determined according to the target reference signal, there is a path whose delay is within the first delay range, the Doppler frequency is within the first Doppler frequency range, and the power of the signal transmitted to the first device through this path is greater than or equal to the third power threshold.

[0227] FIG5A schematically shows an interaction diagram of a communication method executed by a communication system according to an embodiment of the present disclosure.

[0228] As shown in FIG. 5A , the communication method according to an embodiment of the present disclosure may include operations S51 to S53 .

[0229] Different from the embodiment shown in Figure 3, the communication method of the embodiment of the present disclosure takes the target beam associated with the target reference signal in the embodiment of Figure 3 as a wide beam, and performs beam training based on the wide beam to obtain a fine beam. The "wide beam" and "fine beam" here are relative, that is, in the beam training process of the perception scene, we can first use a coarse beam to determine the approximate direction of the scatterer to be perceived, and then further use a fine beam near the direction of the coarse beam to further determine the precise direction of the scatterer. This can reduce the overhead of beam training compared to directly using a fine beam for beam training.

[0230] The method shown in Figure 5A can be generally understood as a subsequent method after S31-S33. For example, through operations S31-S33, one or more "target reference signals" can be determined and recorded as one or more reference signals A (that is, the first reference signal mentioned later). The reference signal A is associated with a wide beam (that is, the transceiver uses a wide beam to transmit and receive reference signal A). Subsequent operations S51-S53 can be understood as the process of determining a fine beam from a wide beam. That is, in an embodiment of the present application, a new target reference signal can be determined, and the beam associated with the new target reference signal is the sub-beam under the wide beam determined in S31-S33 (that is, the transceiver uses a relatively finer beam to transmit and receive the new target reference signal). Therefore, the target reference signal in the embodiment of the present application and the "target reference signal" in S31-S33 may not be the same reference signal.

[0231] In operation S51, the third device sends second configuration information to the first device.

[0232] Exemplarily, the second configuration information may include a first time delay range, a first Doppler frequency range, a first difference or a first ratio, a second difference or a second ratio, and a third difference or a third ratio. On this basis, the second configuration information may also include at least one of a first probability threshold, a second probability threshold, a similarity threshold, and a change threshold. It should also be noted that the first difference or the first ratio can be used to determine the first power threshold; the second difference or the second ratio can be used to determine the second power threshold; the third difference or the third ratio can be used to determine the third power threshold, that is, in an embodiment of the present application, the second configuration information may not include at least one of the first power threshold, the second power threshold, and the third power threshold, but is indirectly determined based on the corresponding difference and ratio.

[0233] Exemplarily, the first time delay range and the first Doppler frequency range can be the same as those in the embodiment shown in Figure 3. For example, they can be sent to the first device through operation S31 of the above embodiment, that is, the first time delay range, the first Doppler frequency range, etc. included in the second configuration information do not need to be sent repeatedly in operation S51. For example, in operation S31 of the above embodiment, the third device can also send configuration information including the first time delay range, the first Doppler frequency range, etc. to the first device, that is, the configuration information of the above operation S31 can include the second configuration information of this embodiment.

[0234] Exemplarily, the second configuration information may further include configuration information of one or more reference signal resources. The configuration information of the reference signal resources is described with reference to operation S31 in FIG3 . To distinguish from the embodiment shown in FIG3 , the one or more reference signal resources configured in this embodiment may be second reference signal resources used to send a second reference signal.

[0235] Exemplarily, the resource configuration information of the reference signal may include beam information associated with these second reference signal resources. For specific configuration information of the beam, please refer to the relevant description in S31 and will not be repeated here.

[0236] Exemplarily, the resource configuration information of the reference signal may include the reference signal resources associated with these second reference signal resources, and the associated reference signal resources are used to determine the first power (or amplitude) threshold, the second power (or amplitude) threshold, and the third power (or amplitude) threshold. Since power and amplitude can usually be converted to each other, the following description takes power as an example. The judgment method based on amplitude can be equivalently converted and will not be repeated here. Specifically, when a reference signal is sent using a thin beam on a second reference signal resource and a reference signal is sent using a wide beam on a reference signal resource associated with the second reference signal resource, the wide beam covers the thin beam. For example, if the target reference signal resource is one of multiple second reference signal resources, the target reference signal resource is associated with a target beam (which can be a transmit beam and / or a receive beam), and the target reference signal resource is associated with a first reference signal resource, and the first reference signal resource is associated with a first beam (which can be a transmit beam and / or a receive beam), then the first beam covers the target beam. It should be noted that the multiple second reference signal resources can be associated with different reference signal resources or with the same reference signal resource.

[0237] Exemplarily, one or more "target reference signals" determined in S33 can be configured as reference signals associated with the second reference signal in this operation, that is, the beam associated with the second reference signal configured in this operation can be a sub-beam of the beam associated with the "target reference signal" determined in S33.

[0238] In operation S52, the second device transmits at least one second reference signal to the first device.

[0239] Exemplarily, for example, one or more second reference signals may be sent or received on the reference signal resource according to the configured one or more reference signal resources.

[0240] Exemplarily, for example, according to the configured beam information, the second device may transmit the second reference signal through the corresponding transmit beam, and the first device may receive the second reference signal through the corresponding receive beam.

[0241] Exemplarily, the second device can directly or indirectly send the second reference signal to the first device, that is, the first device can directly or indirectly receive the second reference signal from the second device. For example, the meaning of "directly" and "indirectly" can be referred to the detailed description of operation S32 in the above embodiment and will not be repeated here.

[0242] In operation S53 , the first device reports information of the target reference signal and / or beam information associated with the target reference signal to the third device.

[0243] The at least one second reference signal includes a target reference signal.

[0244] The target reference signal satisfies the first condition, and the determined target reference signal may be one or more.

[0245] Conditions 1 to 7 included in the first condition can be referred to the detailed description of the above embodiment, and will not be repeated here. It should be noted that, unlike the above embodiment, the first power threshold, second power threshold, and third power threshold corresponding to the above conditions 5, 6, and 7 in the embodiment of the present disclosure are determined in the following manner:

[0246] The first power threshold may be determined, for example, based on the fourth signal power and the first difference or the first ratio. The third signal power is the signal power of the first reference signal within the first delay range. The first reference signal is a reference signal associated with the target reference signal.

[0247] The second power threshold may be determined, for example, based on the fifth signal power and the second difference or the second ratio. The fourth signal power is the power of the first reference signal within the first Doppler frequency range. The first reference signal is a reference signal associated with the target reference signal.

[0248] The third power threshold can be determined, for example, based on the sixth signal power and the third difference or the third ratio, where the sixth signal power is the power of the first reference signal within the first Doppler frequency range and the first time delay range, and the first reference signal is a reference signal associated with the target reference signal.

[0249] It should be understood that, since different target reference signal resources may be associated with different first reference signal resources, the power thresholds that different target reference signal resources need to meet may be different.

[0250] For the specific calculation method of the signal power of the first reference signal and the target reference signal in the first time delay range, the power in the first Doppler frequency range, and the power in the first Doppler frequency range and the first time delay range, please refer to the relevant description in S33 and will not be repeated here.

[0251] Optionally, similar to S33, the power threshold in the above conditions may be replaced by an amplitude threshold for judgment.

[0252] For example, the first difference or the first ratio, the second difference or the second ratio, and the third difference or the third ratio may be determined based on a gain of the target beam compared to the first beam.

[0253] The first power threshold may be, for example, the sum of the fourth signal power and the first difference, the second power threshold may be, for example, the sum of the fifth signal power and the second difference, and the third power threshold may be, for example, the sum of the sixth signal power and the third difference. Alternatively, the first power threshold may be, for example, the product of the fourth signal power and the first ratio, the second power threshold may be, for example, the product of the fifth signal power and the second ratio, and the third power threshold may be, for example, the product of the sixth signal power and the third ratio.

[0254] Operations S51 to S53 may be repeated multiple times. For example, multiple reference signal resources may be further configured, associated with the target reference signal resource determined in S53, and reference signals may be sent using finer beams on these reference signal resources, thereby finding a finer beam suitable for sensing.

[0255] According to the communication method of the embodiment of the present disclosure, through the first power threshold, the second power threshold, and the third power threshold, a finer target beam can be determined from the beam associated with the first reference signal, the resolution of the target beam is higher, and the accuracy and performance of wireless perception are higher.

[0256] FIG5B schematically shows a schematic diagram of improving wireless sensing accuracy through beam training.

[0257] As shown in Figure 5B, the second device A can send corresponding four reference signals to the first device B through four beams Beam1 to Beam4. There is a scatterer C on the path of beam Beam1. After the first device B receives the corresponding four reference signals through the four beams Beam1 to Beam4, it can determine that the reference signal corresponding to beam Beam1 is the target reference signal through the relevant methods in S31-S33. When the third device and the second device are the same device, the first device B can send information about the target reference signal to the second device A. For example, the first device B can also report the target reference signal and / or the target beam Beam1 associated with the target reference signal to the second device A.

[0258] The target reference signal serves as the first reference signal. The first beam Beam1 associated with the first reference signal can be divided into Beam11 and Beam12, for example. These two beams are associated with the second reference signal a and the second reference signal b, respectively. There are scatterers on the path of the second beam Beam12. After the first device B receives the corresponding two second reference signals through the two second beams Beam11 and Beam12, it can be determined that the second reference signal b is the target reference signal through the first condition (the first power threshold corresponding to the first condition here is determined based on the fourth signal power and the first difference or the first ratio, the second power threshold corresponding to the first condition here is determined based on the fifth signal power and the second difference or the second ratio, and the third power threshold corresponding to the first condition here is determined based on the sixth signal power and the third difference or the third ratio). The first device B can also, for example, report the second reference signal b and / or beam Beam12 to the second device A.

[0259] Furthermore, the target beam can be further determined from the wider first beam through beam training. In the example of Figure 5B, for example, the target beam Beam122 can be further determined from beam Beam12, which is similar to the above-mentioned determination of the target beam Beam12 from beam Beam1, and will not be repeated here.

[0260] Since the sensing targets in wireless sensing scenarios may be dynamic, for example, it is possible to continuously sense whether new sensing targets appear in the current environment.

[0261] A communication method according to another embodiment of the present disclosure can perform wireless sensing by sensing whether a new sensing target appears in the current environment. FIG6A schematically shows an interaction diagram of a communication system according to an embodiment of the present disclosure executing the communication method.

[0262] As shown in FIG6A , the communication method according to an embodiment of the present disclosure may include operations S61 to S63 .

[0263] In operation S61, the third device sends third configuration information to the first device.

[0264] Exemplarily, the third configuration information may include a similarity threshold. The third configuration information may also include a first delay range, a first Doppler frequency range, a first probability threshold, a second probability threshold, a first power threshold or a first difference or a first ratio, a second power threshold or a second difference or a second ratio, and a third power threshold or a third difference or a third ratio.

[0265] The third configuration information may be sent in a manner similar to the second configuration information sent in S51. In addition, the third configuration information may also be included in the second configuration information, or sent together with the second configuration information.

[0266] Exemplarily, the third configuration information may further include configuration information of one or more reference signal resources. The configuration information of the reference signal resources is described with reference to operation S31 in FIG3 . To distinguish from the embodiment shown in FIG3 , the one or more reference signal resources configured in this embodiment may be third reference signal resources used to send a third reference signal.

[0267] Exemplarily, the resource configuration information of the reference signal may include beam information associated with these third reference signal resources. For specific configuration information of the beam, please refer to the relevant descriptions in S31 and S51, which will not be repeated here.

[0268] Exemplarily, the resource configuration information for the reference signal may include reference reference signal resources associated with these third reference signal resources, and the associated reference reference signal resources are used to calculate similarity. Specifically, when a reference signal is transmitted using a wide beam on a third reference signal resource, and a reference signal is transmitted using a thin beam on a reference reference signal resource associated with the third reference signal resource, the wide beam overlaps the thin beam. For example, if the target reference signal resource is one of multiple third reference signal resources, the target reference signal resource is associated with a target beam, and the target reference signal resource is associated with reference reference signal resource a, and reference reference signal resource a is associated with reference beam a, then the target beam overlaps the reference beam.

[0269] Exemplarily, the one or more target reference signals determined in S53 may be configured as the reference reference signals in this operation, and the reference signal that can cover the reference beam may be configured as the third reference signal.

[0270] In operation S62, the second device transmits at least one third reference signal to the first device.

[0271] Exemplarily, for example, according to the configured one or more third reference signal resources, one or more third reference signals may be sent or received on these third reference signal resources.

[0272] Exemplarily, for example, according to the configured beam information, the second device may transmit the third reference signal through the corresponding transmit beam, and the first device may receive the third reference signal through the corresponding receive beam.

[0273] Exemplarily, the second device can directly or indirectly send the third reference signal to the first device, that is, the first device can directly or indirectly receive the third reference signal from the second device. For example, the meaning of "directly" and "indirectly" can be referred to the detailed description of operation S32 in the above embodiment and will not be repeated here.

[0274] In operation S63, the first device reports information of the target reference signal to the third device.

[0275] The at least one third reference signal includes a target reference signal.

[0276] The target reference signal satisfies a first condition, which includes at least one of the following:

[0277] Condition 8: The similarity (which can also be understood as correlation) between the measurement result of the target reference signal and the measurement result of the reference reference signal is less than or equal to the similarity threshold (which can also be understood as a correlation threshold), and the reference reference signal is associated with the target reference signal. Optionally, the measurement result of the above-mentioned target reference signal is determined based on the signal of the target reference signal within a first time range, and the measurement result of the reference reference signal is determined based on the signal of the reference reference signal within a second time range, wherein the first time range and the second time range have an intersection, and specifically, the first time range and the second time range are the same. For example, when a third reference signal and its associated reference reference signal are both periodic reference signals, and their periods are the same, then for each period, the measurement result of the third reference signal obtained within the period and the measurement result of the associated reference reference signal obtained within the period can be calculated, and then the similarity between them can be calculated to determine whether condition 8 is met.

[0278] Condition 9: The change in the measurement result of the target reference signal is greater than or equal to a change threshold. For example, when the third reference signal is a periodic reference signal, the measurement result of the third reference signal obtained in each period can be calculated. The change between the measurement result of the third reference signal obtained in that period and the measurement result of the third reference signal obtained in the previous period is then calculated (the change can be represented by a difference or ratio, for example) to determine whether Condition 9 is satisfied.

[0279] Whether a new sensing target appears in the current environment can be determined by the above-mentioned condition 8. For example, if the reference signal RS is not detected, the presence of scatterer A in the current environment has been determined by using the reference signal (associated with the thin beam). i The coarse beam is associated and covers the fine beam, then the first device according to RS i It is determined that there is a scatterer X, which may be scatterer A or a scatterer different from scatterer A. The reference signal RS i The similarity between the measurement result of the reference signal and the measurement result of the reference signal can reflect whether the scatterer X is the scatterer A. For example, if the similarity is less than or equal to the similarity threshold, it indicates that there is a new scatterer different from the scatterer A in the current environment. i When the similarity between the measurement result of the reference signal and the measurement result of the reference signal is less than or equal to the similarity threshold, the reference signal RS i is the target reference signal. Reference signal RS iWhen the similarity between the measurement result of the reference signal and the measurement result of the reference signal is greater than the similarity threshold, the reference signal RS i It is not a target reference signal. For the determined target reference signal, it can be determined that a new scatterer may appear under the coarse beam. At this time, a fine beam scan can be further performed to find the position of the new scatterer.

[0280] Exemplarily, the similarity is the similarity between the delay spectrum of the target reference signal and the delay spectrum of the reference reference signal, or the similarity is the similarity between the Doppler spectrum of the target reference signal and the Doppler spectrum of the reference reference signal, or the similarity is the similarity between the delay-Doppler spectrum of the target reference signal and the delay-Doppler spectrum of the reference reference signal.

[0281] The delay-Doppler spectrum can characterize the power, amplitude, or energy distribution in two dimensions: delay and Doppler frequency.

[0282] The specific similarity calculation method may be, for example, cosine similarity, or correlation of channel state information, or other calculation methods, which are not limited in the embodiments of the present application.

[0283] The reference reference signal is associated with the target reference signal, for example, in that the reference reference signal is associated with the reference beam, the target reference signal is associated with the target beam, and the target beam covers the reference beam. The reference beam can also be understood as a sub-beam of the target beam.

[0284] Whether a new perception target appears in the current environment can be determined by the above-mentioned condition 9. For example, when a new scatterer appears under a certain beam, the channel measurement result under the beam will change. Therefore, in condition 9, the target beam can be determined by the change in the measurement result. The specific measurement results can be the channel response coefficient, delay spectrum, Doppler spectrum, delay-Doppler spectrum, etc. When calculating the change, it can be the difference or ratio between the previous and next measurement results, or the percentage of the difference between the previous and next measurement results relative to the previous measurement result or the percentage relative to the subsequent measurement result.

[0285] The communication method of the embodiment of the present disclosure is aimed at a scenario where there are scatterers on the path passing through the reference beam. By comparing the similarity of the reference signal associated with the wide beam covering the reference beam and the reference reference signal associated with the reference beam in the delay spectrum, Doppler spectrum, or delay-Doppler spectrum dimension, or by observing the temporal changes in the measurement results of the reference signals, a target reference signal can be determined from at least one reference signal, where the target reference signal represents the presence of a new scatterer on the path for transmitting the target reference signal.

[0286] For example, after determining the target reference signal through the above conditions 8 or 9, a finer beam under the beam of the target reference signal can be further determined by the relevant methods in embodiments S51 to S53 to more accurately perceive the scatterer.

[0287] It should be noted that the first condition may further include at least one of conditions 1 to 7, and the first condition may include at least one of conditions 1 to 9.

[0288] For example, the first condition may include condition 1 and condition 8. Condition 1 may determine that a scatterer exists, and condition 8 may determine, through similarity, that a scatterer exists on a path for transmitting a target reference signal.

[0289] For another example, the first condition may include condition 1, condition 3, condition 8, and / or condition 9. Condition 1 may determine the presence of a scatterer, condition 3 may improve the accuracy of determining the scatterer by using a first probability threshold, condition 8 may determine the presence of a scatterer in the path transmitting the target reference signal by similarity, and condition 9 may determine the target beam based on the change in the measurement result.

[0290] For another example, the first condition may include condition 2, condition 8, and / or condition 9. Condition 2 may determine the presence of a moving scatterer, condition 8 may determine the presence of a scatterer in the path of transmitting the target reference signal through similarity, and condition 9 may determine the target beam based on the change in the measurement result.

[0291] For another example, the first condition may include condition 2, condition 4, condition 8, and / or condition 9. Condition 2 may determine the presence of a moving scatterer, condition 4 may improve the accuracy of determining the moving scatterer by using a second probability threshold, condition 8 may determine the presence of a scatterer on the path transmitting the target reference signal by using similarity, and condition 9 may determine the target beam based on the change in the measurement result.

[0292] FIG6B schematically shows a schematic diagram of a communication method according to an embodiment of the present disclosure for continuously sensing whether a new sensing target appears in the current environment.

[0293] As shown in Figure 6B , there is a scatterer C on the path of reference beam Beam14 associated with the reference reference signal. If the third device and the second device are the same device, first device B can, for example, report the information sensed by reference beam Beam14 to second device A. Furthermore, to detect the presence of new scatterers in other beam directions, second device A can, while continuously sensing scatterer C via reference beam Beam14, also use four wide beams (e.g., Beam1 to Beam4 in the figure) to send reference signals to detect the presence of new scatterers. For Beam2~4, since no scatterer was originally detected, the first device can determine whether there is a (or a newly appeared) scatterer based on the method described in S33. For Beam1, since scatterer C exists in advance, the first device can always detect the existence of the scatterer by receiving the reference signal sent by Beam1. In order to further distinguish whether the scatterer is the scatterer C originally detected by the fine beam or a newly appeared scatterer, the first device can calculate the similarity between the measurement results of Beam1 and the measurement results of Beam14 to determine whether a new scatterer has appeared, or it can calculate the change in the measurement results of Beam1 to determine whether a new scatterer has appeared. For example, the measurement result of the reference signal RS1 (associated Beam1) received by the first device B is significantly different from the measurement result of the reference signal (associated Beam14). This difference can be characterized, for example, by the size of the similarity of the delay spectrum or Doppler spectrum or delay-Doppler spectrum. When the similarity is less than or equal to the similarity threshold, the reference signal RS1 can be considered as the target reference signal. The first device B can report the target reference signal RS1 to the second device A, and can also report the target beam Beam1 associated with the target reference signal RS1.

[0294] FIG7 schematically shows an interaction diagram of a communication method according to yet another embodiment of the present disclosure.

[0295] As shown in FIG. 7 , the communication method according to an embodiment of the present disclosure may include operations S71 to S73 .

[0296] In operation S71, the third device transmits configuration information to the first device.

[0297] The first device may receive configuration information from the third device.

[0298] Operation S71 may refer to operation S31 of the embodiment of FIG3 and will not be described in detail here. The configuration information of this embodiment may also indicate that if any reference signal received by the first apparatus does not meet the first condition, no information is reported. The reference signal in this embodiment of the present application may not be associated with a transmit beam and / or a receive beam.

[0299] In operation S72, the second device transmits at least one reference signal; and the first device receives the at least one reference signal.

[0300] Operation S72 may refer to operation S32 in the embodiment of FIG. 3 , and will not be described in detail here.

[0301] In operation S73, if the reference signal received by the first device meets the first condition, the target reference signal information and / or beam information associated with the target reference signal are reported to the third device. The target reference signal measurement results may also be reported, such as the reference signal received power of the target reference signal, the signal power of the reference signal, the Doppler frequency of the reference signal (which may be one or more frequencies), the delay of the reference signal (which may be one or more delays), the received beam information of the reference signal, the probability of a scatterer corresponding to the reference signal, the probability of a moving scatterer corresponding to the reference signal, the delay spectrum, Doppler spectrum, delay-Doppler spectrum corresponding to the reference signal, the power and / or amplitude of the reference signal received along a certain path, and one or more angles of arrival measured using the reference signal. If any reference signal received by the first device does not meet the first condition, no information is reported. The first condition may include one or more of conditions 1 to 9 above.

[0302] For example, if the reference signal received by the first device satisfies the first condition, reporting the target reference signal information and / or the beam information associated with the target reference signal to the third device can be described with reference to operation S33 of FIG3 , which is not described in detail here. FIG7 schematically illustrates an embodiment in which, in operation S73, the first device may not report any information if any reference signal received by the first device does not satisfy the first condition.

[0303] According to the communication method of the embodiment of the present disclosure, after configuring the information of the first condition in the configuration phase, in the subsequent communication phase (perception phase, communication and perception integration phase), after receiving the reference signal, the first device can report the information of the target reference signal that meets the first condition according to the first condition, and if after the first device receives the reference signal, no reference signal meets the first condition, then the first device may not report any information to the third device, so as to reduce communication overhead and energy consumption. In addition, in the application embodiment, the reference signal configured by the configuration information may not be associated with the transmit beam and the receive beam. For example, when the first device and the second device both transmit and receive reference signals through omnidirectional beams, when no scatterers enter the current environment, the main power in the Doppler spectrum detected by the first device is concentrated on the frequency with a Doppler frequency of 0. At this time, the first device may not make any reports. When it is detected that the main power is concentrated on a non-zero Doppler frequency, the first device will report.

[0304] In combination with the interaction diagram of FIG3 , FIG8 schematically shows a flow chart of a communication method performed by a third device according to an embodiment of the present disclosure.

[0305] As shown in FIG8 , the communication method according to an embodiment of the present disclosure includes operation S810 .

[0306] In operation S810, target reference signal information and / or beam information associated with the target reference signal reported by a first device is received.

[0307] The target reference signal is a reference signal that satisfies a first condition, where the first condition includes at least one of the following:

[0308] The first signal power obtained by measuring the target reference signal is greater than or equal to a first power threshold, and the first signal power is a signal power within a first time delay range.

[0309] The second signal power obtained by measuring the target reference signal is greater than or equal to a second power threshold, and the second signal power is a signal power within the first Doppler frequency range.

[0310] The third signal power obtained by measuring the target reference signal is greater than or equal to a third power threshold, and the third signal power is signal power within the first Doppler frequency range and the first time delay range.

[0311] The presence of scatterers is determined based on the target reference signal.

[0312] The presence of a moving scatterer is determined based on the target reference signal.

[0313] The probability of the existence of the scatterer determined according to the target reference signal is greater than or equal to a first probability threshold.

[0314] The probability of determining, based on the target reference signal, that a moving scatterer exists is greater than or equal to a second probability threshold.

[0315] A similarity between a measurement result of the target reference signal and a measurement result of the reference reference signal is less than or equal to a similarity threshold, and the reference reference signal is associated with the target reference signal.

[0316] A variation of the measurement result of the target reference signal is greater than or equal to a variation threshold.

[0317] It should be noted that the communication method executed by the third device according to the embodiment of the present disclosure corresponds to the communication method executed by the first device mentioned above. The relevant technical features, technical principles and technical effects can refer to the communication method executed by the first device mentioned above, and will not be repeated here.

[0318] As shown in FIG8 , the communication method according to another embodiment of the present disclosure may further include, for example, operation S801 before receiving information of a target reference signal reported by a first apparatus.

[0319] In operation S801, configuration information is sent to a first device.

[0320] The configuration information instructs the first device to report information of a reference signal that meets the first condition.

[0321] The configuration information includes at least one of the following: a first power threshold, a first delay range, a second power threshold, a first Doppler frequency range, a third power threshold, a first probability threshold, a second probability threshold, a similarity threshold, and a variation threshold.

[0322] The configuration information includes: information of at least one transmit beam and / or information of at least one receive beam, each of the at least one reference signal is associated with one transmit beam in the at least one transmit beam, and / or each of the at least one reference signal is associated with one receive beam in the at least one receive beam.

[0323] For a detailed description of the configuration information, please refer to the relevant description in the previous embodiment.

[0324] Optionally, the above configuration information may also be sent to the second device.

[0325] In operation S802, at least one reference signal is transmitted to a first device.

[0326] The at least one reference signal includes a target reference signal.

[0327] In this case, the third device and the second device are the same device.

[0328] According to an embodiment of the present disclosure, the present disclosure also provides a communication device, a communication system, a computer-readable storage medium, and a computer program product.

[0329] 9 schematically shows a communication device 900 according to an embodiment of the present disclosure, including a transceiver module 910. The transceiver module 910 of the communication device 900 is configured to execute the communication method of any one of the embodiments executed by the first device.

[0330] 10 schematically shows a communication device 1000 according to another embodiment of the present disclosure, including a transceiver module 1010. The transceiver module 1010 of the communication device 1000 is configured to execute the communication method of any one of the embodiments executed by the third apparatus.

[0331] A communication device in another embodiment of the present disclosure may include a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to execute the above-mentioned communication method through logic circuits or executing code instructions.

[0332] In some embodiments, the instructions are stored in a memory that is communicatively connected or coupled to the processor.

[0333] In some embodiments, the communication device is a chip.

[0334] The embodiments of the device part of the present disclosure are the same or similar to the embodiments of the method part of the present disclosure, and the technical problems solved and the technical effects achieved are also the same or similar, so the present disclosure will not repeat them here.

[0335] A communication system according to an embodiment of the present disclosure may include a communication device corresponding to the first device and a communication device corresponding to the third device according to the above embodiment.

[0336] The communication system of another embodiment of the present disclosure may further include a second device for sending at least one reference signal to the first device.

[0337] FIG11 shows a schematic block diagram of an example communication device 1100 that can be used to implement another embodiment of the present disclosure. The communication device includes various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The communication device may also include various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are provided as examples only and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0338] As shown in FIG11 , the communication device 1100 includes a computing unit 1101 that can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 1102 or a computer program loaded from a storage unit 1108 into a random access memory (RAM) 1103. Various programs and data required for the operation of the communication device 1100 may also be stored in the RAM 1103. The computing unit 1101, the ROM 1102, and the RAM 1103 are connected to each other via a bus 1104. An input / output (I / O) interface 1105 is also connected to the bus 1104.

[0339] Multiple components in the communication device 1100 are connected to the I / O interface 1105, including: an input unit 1106, such as a keyboard, a mouse, etc.; an output unit 1107, such as various types of displays, speakers, etc.; a storage unit 1108, such as a magnetic disk, an optical disk, etc.; and a communication unit 1109, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 1109 allows the device 1100 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0340] The computing unit 1101 can be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 1101 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units that run machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 1101 performs the various methods and processes described above, such as the communication method. For example, in some embodiments, the aforementioned method can be implemented as a computer software program that is tangibly included in a machine-readable medium, such as a storage unit 1108. In some embodiments, part or all of the computer program can be loaded and / or installed on the communication device 1100 via the ROM 1102 and / or the communication unit 1109. When the computer program is loaded into the RAM 1103 and executed by the computing unit 1101, one or more steps of the communication method described above can be performed. Alternatively, in other embodiments, the computing unit 1101 may be configured to execute the communication method in any other appropriate manner (eg, by means of firmware).

[0341] Various implementations of the systems and techniques described above can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0342] The program code for implementing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device so that when the program code is executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0343] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, a flash memory, or any suitable combination of the foregoing.

[0344] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a cathode ray tube (CRT) or a liquid crystal display (LCD) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0345] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0346] Computer systems may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The client and server relationship arises through computer programs running on the respective computers and having a client-server relationship to each other.

[0347] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not a limitation herein.

[0348] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A communication method, characterized in that: Applied to a first device, comprising: receiving at least one reference signal sent by a second device; Reporting target reference signal information and / or beam information associated with the target reference signal to a third device, where the at least one reference signal includes the target reference signal, and the target reference signal is a reference signal that satisfies a first condition, where the first condition includes at least one of the following: A first signal power obtained by measuring the target reference signal is greater than or equal to a first power threshold, where the first signal power is a signal power within a first delay range; A second signal power obtained by measuring the target reference signal is greater than or equal to a second power threshold, where the second signal power is a signal power within a first Doppler frequency range; A third signal power obtained by measuring the target reference signal is greater than or equal to a third power threshold, the third signal power being a signal power within the first Doppler frequency range and the first time delay range; determining the presence of a scatterer based on the target reference signal; determining the presence of a moving scatterer according to the target reference signal; Determining, based on the target reference signal, that a probability of the presence of a scatterer is greater than or equal to a first probability threshold; Determining, based on the target reference signal, that a probability of the presence of a moving scatterer is greater than or equal to a second probability threshold; A similarity between a measurement result of the target reference signal and a measurement result of a reference reference signal is less than or equal to a similarity threshold, and the reference reference signal is associated with the target reference signal; A variation of the measurement result of the target reference signal is greater than or equal to a variation threshold.

2. The method according to claim 1, characterized in that Before reporting the target reference signal information to the third device, the method further includes: Receive configuration information sent by the third device, wherein the configuration information instructs the first device to report information of a reference signal that meets the first condition.

3. The method according to claim 1 or 2, characterized in that Before reporting the target reference signal information to the third device, the method further includes: Receive configuration information sent by the third device, wherein the configuration information includes at least one of the following: the first power threshold, the first delay range, the second power threshold, the first Doppler frequency range, the third power threshold, the first probability threshold, the second probability threshold, the similarity threshold, and the change threshold.

4. The method according to claim 1, wherein Before reporting the target reference signal information to the third device, the method further includes: Receive configuration information sent by the third device, wherein the configuration information includes: information of at least one transmit beam and / or information of at least one receive beam, each of the at least one reference signal is associated with one of the at least one transmit beam, and / or each of the at least one reference signal is associated with one of the at least one receive beam.

5. The method according to claim 1, wherein The first power threshold is determined based on a fourth signal power and a first difference or a first ratio, the fourth signal power being a signal power of a first reference signal within the first time delay range, and the first reference signal being associated with the target reference signal.

6. The method according to claim 1, characterized in that The second power threshold is determined based on a fifth signal power and a second difference or a second ratio, where the fifth signal power is the power of a first reference signal within the first Doppler frequency range, and the first reference signal is associated with the target reference signal.

7. The method according to claim 1, characterized in that The third power threshold is determined based on the sixth signal power and the third difference or the third ratio, the sixth signal power is the signal power of the first reference signal within the first time delay range and the first Doppler frequency range, and the sixth reference signal is associated with the target reference signal.

8. The method according to any one of claims 5 to 7, characterized in that The first reference signal is associated with a first beam, the target reference signal is associated with a target beam, and the first beam covers the target beam.

9. The method according to claim 1, characterized in that The first signal power is calculated by one of the following formulas: or, Wherein, Γ represents the first delay range, H k represents a channel response coefficient on the frequency domain unit k determined according to the measurement result of the target reference signal, D represents a delay within the first delay range, N1 is determined according to the bandwidth of the target reference signal, or N1 represents the number of points of the inverse discrete Fourier transform IDFT, and A1 is a constant.

10. The method according to claim 1, characterized in that The first signal power is determined based on the power of a path with the highest power among multiple target paths, where the multiple target paths are multiple paths determined based on a target reference signal, and a delay of each path in the multiple target paths is within the first delay range; The delay is D p The power of the path is determined according to the following formula: Among them, H k represents the channel response coefficient on the frequency domain unit k determined according to the target reference signal measurement result, N1 is determined according to the bandwidth of the target reference signal, or N1 represents the number of points of the inverse discrete Fourier transform IDFT, and A1 is a constant.

11. The method according to claim 1, wherein The second signal power is calculated by one of the following formulas: A2∫ f∈Λ |∑ i H i exp(j2πfT i )| 2 , or, A2∑ f∈Λ |∑ i H i exp(j2πfT i )| 2 , Wherein, Λ represents the first Doppler frequency range, H i represents the channel response coefficient at time unit i determined according to the target reference signal measurement result, f represents a Doppler frequency within the first Doppler frequency range, T i Represents the moment corresponding to time unit i.

12. The method according to claim 1, characterized in that The second signal power is determined based on a power of a path with the highest power among multiple target paths, wherein the multiple target paths are multiple paths determined based on the target reference signal, and a Doppler frequency of each path in the multiple target paths is within the first Doppler frequency range; The power of a path with Doppler frequency f is determined by the following formula: A2|∑ i H i exp(-j2πfT i )| 2 , Among them, H i represents the channel response coefficient on the time unit i determined according to the target reference signal measurement result, T i represents the moment corresponding to the time unit i, and f represents a Doppler frequency within the first Doppler frequency range.

13. The method according to claim 1, wherein The first Doppler frequency range is predefined as a non-zero Doppler frequency range.

14. The method according to claim 1, wherein The similarity is the similarity between the delay spectrum of the target reference signal and the delay spectrum of the reference reference signal, or the similarity is the similarity between the Doppler spectrum of the target reference signal and the Doppler spectrum of the reference reference signal, or the similarity is the similarity between the delay-Doppler spectrum of the target reference signal and the delay-Doppler spectrum of the reference reference signal.

15. The method according to claim 1, wherein The reference reference signal is associated with a reference beam, the target reference signal is associated with a target beam, and the target beam covers the reference beam.

16. A communication method, characterized in that: Applied to the third device, the method includes: receiving target reference signal information and / or beam information associated with the target reference signal reported by a first device, wherein the target reference signal is a reference signal that satisfies a first condition, the first condition including at least one of the following: A first signal power obtained by measuring the target reference signal is greater than or equal to a first power threshold, where the first signal power is a signal power within a first delay range; A second signal power obtained by measuring the target reference signal is greater than or equal to a second power threshold, where the second signal power is a signal power within a first Doppler frequency range; A third signal power obtained by measuring the target reference signal is greater than or equal to a third power threshold, the third signal power being a signal power within the first Doppler frequency range and the first time delay range; determining the presence of a scatterer based on the target reference signal; determining the presence of a moving scatterer according to the target reference signal; Determining, based on the target reference signal, that a probability of the presence of a scatterer is greater than or equal to a first probability threshold; Determining, based on the target reference signal, that a probability of the presence of a moving scatterer is greater than or equal to a second probability threshold; A similarity between a measurement result of the target reference signal and a measurement result of a reference reference signal is less than or equal to a similarity threshold, and the reference reference signal is associated with the target reference signal; A variation of the measurement result of the target reference signal is greater than or equal to a variation threshold.

17. The method according to claim 16, characterized in that Before receiving the target reference signal information reported by the first device, the method further includes: Configuration information is sent to the first device, wherein the configuration information instructs the first device to report information of a reference signal that meets the first condition.

18. The method according to claim 16 or 17, characterized in that Before receiving the target reference signal information reported by the first device, the method further includes: Sending configuration information to the first device, where the configuration information includes at least one of the following: The first power threshold, the first time delay range, the second power threshold, the first Doppler frequency range, the third power threshold, the first probability threshold, the second probability threshold, the similarity threshold, and the change threshold.

19. The method according to claim 16, wherein Also includes: At least one reference signal is sent to the first apparatus, wherein the at least one reference signal includes the target reference signal.

20. The method according to claim 16, wherein Before receiving the target reference signal information reported by the first device, the method further includes: Configuration information is sent to the first device, wherein the configuration information includes: information of at least one transmit beam and / or information of at least one receive beam, each of the at least one reference signal is associated with one of the at least one transmit beam, and / or each of the at least one reference signal is associated with one of the at least one receive beam.

21. A communication device comprising: A transceiver module for executing the communication method according to any one of claims 1 to 15.

22. A communication device comprising: A transceiver module for executing the communication method according to any one of claims 16 to 20.

23. A communication system comprising: A first device and a third device, wherein the first device is used to execute the communication method of any one of claims 1-15, and the third device is used to execute the communication method of any one of claims 16-20.

24. The system of claim 23, further comprising: Second means for sending at least one reference signal to the first means.

25. A computer-readable storage medium storing computer instructions, characterized in that: include: Computer instructions, wherein when the computer instructions are executed, the computer is caused to perform the method according to any one of claims 1 to 20.

26. A computer program product, characterized in that The computer program product comprises: a computer program code, and when the computer program code is executed by a computer, the computer is caused to perform the method according to any one of claims 1 to 15 or the method according to any one of claims 16 to 20.

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