Wireless sensing method, electronic device and storage medium

Abstract

Embodiments of the present application disclose a wireless sensing method, an electronic device, and a storage medium. An access point device is communicatively connected to a plurality of trigger devices. The method applied to the access point device includes: a step of respectively receiving sensing messages transmitted from the plurality of trigger devices (S101); a step of obtaining channel state information of a corresponding trigger device according to the sensing message (S102); a step of determining whether an object exists within the coverage range of the corresponding trigger device according to the channel state information to obtain a channel determination result (S103); and a step of adjusting the operating state of the trigger device for transmitting the sensing message by transmitting configuration information to the trigger device according to the channel determination result (S104).

Description

Technical Field

[0001] This application is proposed based on a Chinese patent application with an application number of 202210734436.8 and an application date of June 27, 2022, and claims the priority of the Chinese patent application. Here, the entire content of the Chinese patent application is incorporated herein by reference.

[0002] This application relates to the technical field of communications, but is not limited thereto. In particular, it relates to a wireless sensing method, an electronic device, and a storage medium.

Background Art

[0003] Wireless sensing uses WiFi signals within a coverage area to sense the human body and the environment, and may also be called WiFi sensing. It is a technology that uses wireless local area network (WLAN) signals to recognize objects within the coverage range. The object may usually be a person, but is not limited to a person, and may also be other animals, objects, etc. that need to be sensed and recognized.

[0004] In related technologies, when a wireless sensing system senses a user's behavior, the trigger device sends a message to the access point device. However, in the process of the trigger device continuously sending messages to the access point device, there is a problem of occupying the system's air interface resources, thereby reducing the ability and efficiency of wireless sensing.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Embodiments of this application provide a wireless sensing method, an electronic device, and a storage medium.

Means for Solving the Problems

[0006] In the first embodiment, the embodiment of the present application is a wireless sensing method applied to an access point device, the access point device being in communication with a plurality of trigger devices, and the steps include: receiving sensing messages transmitted from each of the plurality of trigger devices; obtaining channel state information of the corresponding trigger device in accordance with the sensing message; determining whether an object exists within the coverage range of the corresponding trigger device in accordance with the channel state information and obtaining a channel determination result; and adjusting the operating state in which the trigger device transmits the sensing message by transmitting configuration information to the trigger device in accordance with the channel determination result. The step of adjusting the operating state in which the trigger device transmits the sensing message by transmitting configuration information to the trigger device in accordance with the channel determination result includes the step of, if the trigger device is determined to have an object within the coverage range in accordance with the channel determination result, transmitting first configuration information to the trigger device having an object within the coverage range to improve the amount of information in the sensing message transmitted by the trigger device, or, if the trigger device is determined to have no object within the coverage range in accordance with the channel determination result, transmitting second configuration information to the trigger device having no object within the coverage range to reduce or stop the transmission of the sensing message. A wireless sensing method is provided.

[0007] In a second embodiment, the embodiment of the present application is a wireless sensing method applied to a trigger device, the trigger device being connected to an access point device, transmitting a sensing message to the access point device, the access point device obtaining corresponding channel state information in response to the sensing message, determining whether an object exists within the coverage range of the corresponding trigger device in response to the channel state information, obtaining a channel determination result, and the access point device further obtaining configuration information in response to the channel determination result; and receiving the configuration information transmitted from the access point device, and adjusting the operating state for transmitting the sensing message in response to the configuration information. The step of receiving the configuration information transmitted from the access point device and adjusting the operating state for transmitting the sensing message according to the configuration information includes a step of improving the amount of information in the transmitted sensing message by receiving first configuration information transmitted from the access point device, wherein the first configuration information is obtained by the access point device when an object exists within the coverage range of the trigger device, and a step of receiving second configuration information transmitted from the access point device and reducing or stopping the transmission of the sensing message according to the second configuration information, wherein the second configuration information is obtained by the access point device when an object does not exist within the coverage range of the trigger device. A wireless sensing method is provided.

[0008] In a third aspect, an embodiment of the present application includes a memory and a processor, wherein a computer program is stored in the memory, and the processor executes the computer program to provide an electronic device that realizes the wireless sensing method described in any one of the embodiments of the first or second aspect of the present application.

[0009] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a program is stored, and when the program is executed by a processor, the wireless sensing method described in any one of the embodiments of the first and second aspects of the present application is realized. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram illustrating an application scenario for a wireless sensing method according to one embodiment of the present invention. [Figure 2] This is a schematic diagram illustrating an application scenario for a wireless sensing method according to another embodiment of the present invention. [Figure 3] This is a flowchart of a wireless sensing method according to one embodiment of the present invention. [Figure 4] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 5] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 6] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 7] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 8] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 9] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 10] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 11] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 12] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 13] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 14] This is a flowchart of a wireless sensing method according to another embodiment of the present invention. [Figure 15] It is a flowchart of a wireless sensing method according to another embodiment of the present application. [Figure 16] It is a flowchart of a wireless sensing method according to another embodiment of the present application. [Figure 17] It is a schematic diagram of an electronic device according to an embodiment of the present application.

Embodiments for Carrying Out the Invention

[0011] In order to make the object, technical solution and advantages of the present application clearer, the present application will be described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used for interpreting the present application and do not limit the present application.

[0012] In the description of the present application, regarding the description of directions, for example, the directions or positional relationships indicated by up, down, front, back, left, right, etc. are the directions or positional relationships based on the drawings, and are only for the convenience of description and simplification of the description of the present application, and do not indicate or imply that the relevant device or element must have a specific direction or be configured and operated in a specific direction. Therefore, it should be understood that the embodiments of the present application are not limited.

[0013] In addition, in the description of the embodiments of the present application, the meaning of several is one or more, the meaning of multiple (or multiple items) is two or more, and larger, smaller, exceeding, etc. are understood not to include the reference number, and above, below, within, etc. are understood to include the reference number. When "first", "second", etc. are mentioned, it is only for the purpose of distinguishing technical features and does not indicate or imply relative importance, nor implicitly indicates the number of the indicated technical features or the order relationship of the indicated technical features. It should be understood that this is not the case.

[0014] In the description of the embodiments of this application, unless otherwise clearly limited, words such as installation, attachment, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the embodiments of this application in combination with the specific content of the technical solution.

[0015] Wireless sensing, or WiFi sensing, is a technology that uses WLAN signals to recognize the movement of users within the coverage area. Its main operating principle is that every time an access point device receives a signal, it estimates the wireless channel to improve wireless performance. The estimation result of the wireless channel is called channel state information (CSI). Since the wireless channel characteristics are affected by the position and characteristics of the objects between the transmitting and receiving antennas, different wireless channel characteristics, that is, different CSIs, are generated according to the different movements and positions of users. Therefore, the WLAN device can obtain the movement, position or other information of the user by analyzing the CSI.

[0016] In the related art, usually, a single-frequency trigger device is used to trigger and collect sensing signals. However, this wireless sensing method has the drawback of occupying air interface resources. The applicant has found that there is a problem that the trigger device occupies the system's air interface resources during the process of continuously transmitting messages to the access point device, thereby reducing the wireless sensing ability and efficiency.

[0017] In view of the above circumstances, the embodiments of the present application provide a wireless sensing method, an electronic device, and a storage medium, wherein the wireless sensing method is an algorithm that improves wireless sensing, and the wireless sensing method can be applied to an access point device or a trigger device, thereby allowing the trigger device to adjust its operating state for transmitting sensing messages according to configuration information, and after adjusting its operating state for transmitting sensing messages, the trigger device can reduce its occupation of air interface resources, and the trigger device can transmit sensing messages depending on whether or not an object exists within the coverage range, and since not all trigger devices transmit messages at all times, the air interface resources they occupy are low, thereby enabling rational planning and scheduling of multiple trigger devices, and further effectively improving the capability and efficiency of wireless sensing. Furthermore, by installing both high-frequency and low-frequency trigger devices, rational planning and scheduling of multi-frequency trigger devices can be achieved, resulting in wider coverage compared to using only single-frequency trigger devices. As bandwidth increases, the performance of the sensing algorithm also improves. In the embodiment of this application, it was found that when the target object is at the nearby edge, the bandwidth can be dynamically increased, and the performance of the sensing algorithm can be improved by minimizing the occupation of air interface resources. In addition, under equivalent power, the coverage range increases with decreasing frequency, so the coverage range of low-frequency trigger devices is wider than that of high-frequency trigger devices, and the method of the embodiment of this application can increase the coverage of the sensing algorithm.

[0018] In the embodiments of the present invention, the access point device and trigger device can realize a communication connection. The access point device is a WLAN device, a wireless access point (i.e., a wireless AP or WAP), and acts as a bridge connecting a wired network and a wireless network, adding wireless functionality to a conventional wired network by bridging traffic from the wireless network to the wired network. The trigger device is any single device capable of sending messages, for example, the trigger device may be a user device. A single access point device can serve one or more user devices simultaneously, and these user devices include, but are not limited to, mobile phones, Internet of Things terminals, or other access point devices. Communication between the access point device and the trigger device is based on, but is not limited to, the 802.11 series protocol.

[0019] As shown in Figure 1, one access point device can communicate with multiple trigger devices, each trigger device sends a message to the access point device, and after receiving the message, the access point device can perform channel estimation on the message and obtain channel status information for each trigger device. In the embodiment of the present invention, the message for channel estimation is written as a sensing message, and the trigger device can send one sensing message to the access point device at regular intervals.

[0020] As shown in Figure 2, the trigger devices may include low-frequency trigger devices and high-frequency trigger devices, with one access point device providing network access and two or more trigger devices connected to the access point device. The low-frequency and high-frequency trigger devices operate in different frequency bands, the straight-line distance between the antenna of the low-frequency trigger device (which operates at a lower frequency) and the antenna of the access point device is greater than or equal to the distance between the antenna of the high-frequency trigger device (which operates at a higher frequency) and the antenna of the access point device, the low-frequency and high-frequency trigger devices can transmit sensing messages to the access point device at regular intervals, and the low-frequency and high-frequency trigger devices may be a single 802.11 device capable of operating simultaneously in both frequency bands, where low-frequency and high-frequency are defined by the actual operating frequencies of the trigger devices. To be clear, there may be multiple low-frequency and high-frequency trigger devices, and this is not particularly limited.

[0021] In the embodiments of this application, the low-frequency trigger device and the high-frequency trigger device have relative frequencies. The operating frequency of the low-frequency trigger device is lower than that of the high-frequency trigger device. For example, in one embodiment, the low-frequency trigger device is a 2.4G trigger device and the high-frequency trigger device is a 5G trigger device. The high-frequency trigger device may also be a device with a higher frequency, such as a 6G trigger device. As long as the requirements of the embodiments of this application are met, the low-frequency trigger device and the high-frequency trigger device may be devices of other frequencies. Here, only 2.4G and 5G will be explained as examples.

[0022] The details are explained below.

[0023] Embodiments of the present application provide a wireless sensing method applicable to access point equipment and can be applied to any WLAN access point equipment that meets the WiFi 5 standard. A detailed description of the access point equipment is omitted here. As shown in Figure 3, the wireless sensing method in embodiments of the present application includes, but is not limited to, steps S101 to S104.

[0024] Step S101: Receive sensing messages sent from multiple trigger devices.

[0025] Step S102: Obtain channel status information of the corresponding trigger device in response to the sensing message.

[0026] Step S103: Based on the channel status information, determine whether or not an object exists within the coverage range of the corresponding trigger device and obtain the channel determination result.

[0027] Step S104: The trigger device is configured to send sensing messages by sending configuration information according to the channel determination result.

[0028] In one embodiment, an access point device is connected to multiple trigger devices, and the trigger devices can send sensing messages to the access point device. After receiving a sensing message, the access point device obtains channel state information for each corresponding trigger device according to the sensing message, and can determine the user's actions within the signal coverage range of the corresponding trigger device based on the channel state information. In the embodiment of the present application, it is possible to determine whether or not an object exists within the coverage range of the corresponding trigger device based on the channel state information and obtain a channel determination result. In some embodiments, the channel determination result includes two results: that an object exists within the coverage range of the corresponding trigger device, or that an object does not exist within the coverage range of the corresponding trigger device. Based on these two results, the access point device can obtain configuration information and send it to the trigger devices. After receiving the configuration information, the trigger devices can control themselves and adjust the operating state in which the trigger devices themselves send sensing messages.

[0029] To make it understandable, the trigger device can adjust its operating state by either adjusting whether or not to send a sensing message, adjusting the frequency at which it sends the sensing message, or adjusting the frequency band or amount of information of the transmitted sensing message, thereby allowing the trigger device to adjust depending on whether or not an object is present within its coverage range.

[0030] According to the embodiment of the present invention, the trigger device can reduce its occupation of air interface resources after adjusting its operating state for transmitting sensing messages, and the trigger device can adjust its operating state for transmitting sensing messages depending on whether or not an object is present within the coverage range, thereby enabling rational planning and scheduling of multiple trigger devices and further effectively improving the capability and efficiency of wireless sensing.

[0031] To make it clear, for trigger devices where an object is present within the coverage range, the embodiments of the present invention can improve the sensing performance, while for trigger devices where no object is present within the coverage range, the embodiments of the present invention can reduce the sensing performance, thereby reducing the occupation of air interface resources and improving the capability and efficiency of wireless sensing.

[0032] As shown in Figure 4, in one embodiment, the trigger device is configured to transmit sensing messages at a preset time interval, and step S103 may further include steps S201 to S202, but is not limited to these.

[0033] Step S201: Sequence information is formed in accordance with the multiple channel state information of each trigger device over multiple time periods.

[0034] Step S202: Based on the sequence information, determine whether or not an object exists within the coverage range of the corresponding trigger device and obtain the channel determination result.

[0035] In one embodiment, a trigger device transmits sensing messages at a predetermined time interval. For a given trigger device, it transmits a sensing message to the access point device at a first time interval, and after the time reaches a predetermined time interval, it transmits another sensing message to the access point device at a second time interval. The number of times the trigger device cyclically transmits sensing messages can be predetermined; that is, the number of time intervals in which the trigger device transmits sensing messages can be predetermined. In these multiple time intervals, the access point device obtains a plurality of channel state information corresponding to the sensing messages transmitted from each trigger device, and can form sequence information according to the plurality of channel state information. To understand this, the sequence information pertains to a particular trigger device, and the sequence information is a set of multiple channel state information obtained by accumulating the sensing messages transmitted by the trigger device over multiple time intervals. The access point device determines whether or not an object exists within the coverage range of the corresponding trigger device according to the sequence information and obtains a channel determination result. If there are multiple trigger devices that need to be processed, the access point device can obtain sequence information for multiple different trigger devices.

[0036] To make it easier to understand, in the embodiments of the present invention, the access point device calculates the channel state result using sequence information, thereby enabling it to make a decision based on the channel state information of the trigger device at multiple different time periods. For example, there are three time periods, that is, the trigger device transmits three sensing messages to the access point device in three consecutive time periods, with the transmission times being the first, second, and third time periods, respectively. The time intervals between the first, second, and third time periods are the same, and all are equal to the size of the time period. The access point device obtains sequence information of the trigger device based on the three channel state information obtained at the first, second, and third time periods, and can process based on these three channel state information in the sequence information. This allows it to determine whether or not an object exists within the coverage range of the corresponding trigger device and obtain a channel determination result.

[0037] To make it easier to understand, an access point device can obtain the necessary channel determination result by processing multiple channel state information in sequence information. The access point device may assign weights to the multiple channel state information and perform a weighted calculation according to the weighted channel state information to obtain the necessary channel determination result, or it may input the multiple channel state information into a pre-configured processing model such as a neural network model or a mathematical model and calculate the necessary channel determination result thereby, and is not particularly limited thereto.

[0038] As shown in Figure 5, in one embodiment, steps S301 to S302 may be further included before step S202, but the embodiment is not limited to these.

[0039] Step S301: Obtain the message time interval between each channel state information in the sequence information.

[0040] Step S302: If the message time interval does not correspond to the size of the time period, interpolation is performed on the sequence information to make the interpolated message time interval correspond to the size of the time period.

[0041] In one embodiment, after multiple time cycles have elapsed, sensing messages transmitted from each trigger device received by the access point device may be missing due to congestion of the air interface or other reasons. The number of sensing messages may differ from the number of time cycles, or the message time intervals between each channel state information in the sequence information may not be uniform. To solve this problem, the access point device interpolates the sequence information of each trigger device, i.e., interpolates the channel state information in the sequence information, thereby avoiding uneven reception of messages due to air interface competition.

[0042] In some embodiments, the access point device obtains the message time interval between each channel state information in the sequence information, determines the message time interval, and if the message time interval does not correspond to the size of the time period, performs interpolation on the sequence information to make the interpolated message time interval correspond to the size of the time period.

[0043] For example, if the message times corresponding to each channel state information in the sequence information are 1 second, 2 seconds, 3.2 seconds, and 4 seconds, respectively, the magnitude of the time period is 1 second. In this case, there should be one corresponding channel state information for a time of 3 seconds. However, due to congestion of the air interface or other reasons, the message time becomes 3.2 seconds. Therefore, the embodiment of the present invention interpolates the channel state information for a time of 3 seconds, making the message times corresponding to each channel state information in the interpolated sequence information 1 second, 2 seconds, 3 seconds, and 4 seconds, respectively.

[0044] Furthermore, for example, if the message times corresponding to each channel state information in the sequence information are 1 second, 2 seconds, and 4 seconds, the magnitude of the time period is 1 second. In this case, there should be one corresponding channel state information for a time of 3 seconds. However, due to congestion of the air interface or other reasons, one is missing during the period between 2 seconds and 4 seconds. Therefore, the embodiment of the present invention can interpolate the channel state information for a time of 3 seconds, thereby making the message times corresponding to each channel state information in the interpolated sequence information 1 second, 2 seconds, 3 seconds, and 4 seconds, respectively.

[0045] As shown in Figure 6, in one embodiment, step S302 may further include steps S401 to S404, but is not limited to these.

[0046] Step S401: Obtain the standard time of the target channel state information to be interpolated.

[0047] Step S402: Inverse distance weighting is applied to the channel state information outside of standard time in the sequence information, a weighted average calculation is performed on the channel state information with different weights to obtain the target channel state information, and the target channel state information is added to the sequence information.

[0048] Step S403: Alternatively, obtain multiple channel state information prior to the standard time in the sequence information, perform a weighted average calculation on the multiple channel state information to obtain target channel state information, and add the target channel state information to the sequence information.

[0049] Step S404: Alternatively, channel state information for time intervals corresponding to standard time in the sequence information is obtained, used as the interpolated target channel state information, and the target channel state information is added to the sequence information.

[0050] In one embodiment, interpolation can be performed according to different methods. For example, in the embodiment of the present application, the transmission time of each sensing message is defined as a standard time, the standard time is associated with a corresponding trigger device and a corresponding time period, and for the same trigger device, the time interval between two adjacent standard times is equal to the magnitude of the time period, and in the interpolation process, the access point device first obtains the standard time of the target channel state information to be interpolated, for example, in the above embodiment, if the message times corresponding to each channel state information in the sequence information are 1 second, 2 seconds, 3.2 seconds and 4 seconds, respectively, the magnitude of the time period is 1 second, and in this case, there should be one corresponding channel state information at a time of 3 seconds, and 3 seconds is the standard time of the corresponding target channel state information, and the access point device needs to interpolate one channel state information as target state information at a standard time of 3 seconds.

[0051] For example, the embodiment of the present application can be interpolated by inverse distance weighting. The channel state information received at the standard time of the target channel state information is a weighted average of the channel state information at other times. With inverse distance weighting, the further away from the standard time, the smaller the weight becomes, and conversely, the closer to the standard time, the larger the weight becomes. By performing a weighted average calculation on channel state information with different weights, the target channel state information can be obtained and added to the sequence information.

[0052] Furthermore, the embodiment of the present application can also perform multi-order spline interpolation, in which the target channel state information at standard time is obtained by performing a weighted average on multiple preceding channel state information. The access point device can acquire multiple channel state information prior to standard time in the sequence information, perform a weighted average calculation on the multiple channel state information to obtain target channel state information, and add the target channel state information to the sequence information. For example, the embodiment of the present application can acquire three channel state information prior to standard time, assign weights to these three channel state information, for example, by setting the weights of these three channel state information to be the same, or by setting the weight of the channel state information to increase as it approaches standard time. There are no particular limitations here, and the necessary target channel state information can be obtained by performing a weighted average calculation on the three weighted channel state information.

[0053] Furthermore, the embodiment of the present invention can also acquire channel state information for time intervals corresponding to the standard time in the sequence information, use it as interpolated target channel state information, and add the target channel state information to the sequence information. The time interval can be set in advance; for example, the time interval can be set to the shortest time interval before the standard time or the shortest time interval after the standard time, thereby realizing the acquisition of channel state information closest to the standard time as target channel state information.

[0054] As shown in Figure 7, in one embodiment, step S202 may further include steps S501 to S502, but is not limited to these.

[0055] Step S501: The covariance matrix of the sequence information is calculated, and based on whether the diagonal elements of the covariance are greater than a threshold, it is determined whether or not an object exists within the coverage range of the corresponding trigger device, and the channel determination result is obtained.

[0056] Step S502: Alternatively, sequence information is input into a pre-trained neural network model, the output result of the neural network model is obtained, and based on the output result, it is determined whether or not an object exists within the coverage range of the corresponding trigger device, and a channel determination result is obtained.

[0057] In one embodiment, the embodiment of the present application can calculate channel determination results by various methods. For example, in the embodiment of the present application, the covariance matrix of the sequence information is calculated by calculating the covariance matrix of the sequence information, and if there is a diagonal element in the covariance that is greater than a threshold τ, it is determined that an object exists within the coverage range of the corresponding trigger device, thereby obtaining a channel determination result indicating that a person exists within the coverage range of the corresponding trigger device. Alternatively, if there is a diagonal element in the covariance that is less than a threshold τ, it is determined that an object does not exist within the coverage range of the corresponding trigger device, thereby obtaining a channel determination result indicating that a person does not exist within the coverage range of the corresponding trigger device.

[0058] Furthermore, for example, embodiments of the present invention can also obtain channel determination results according to a pre-set neural network model. In some embodiments, sequence information can be input to a pre-trained neural network model, that is, multiple channel state information can be input to a pre-trained neural network model, the neural network model can process the input data and output the output result of the neural network model, and according to the output result, it can be determined whether or not an object exists within the coverage range of the corresponding trigger device, thereby obtaining a channel determination result. As can be understood, the neural network model may be obtained in advance by training and optimizing it with respect to multiple sample sequence information or multiple sample channel state information in the sample and the channel determination results in the sample, and is not particularly limited thereto.

[0059] To make it easier to understand, if there are multiple trigger devices, the access point device can calculate each of the multiple trigger devices and thereby obtain the channel determination result for each trigger device.

[0060] In one embodiment, the trigger device includes a low-frequency trigger device and a high-frequency trigger device, both of which are configured to transmit sensing messages to an access point device.

[0061] In this embodiment, the trigger devices are divided into low-frequency trigger devices and high-frequency trigger devices, and the frequencies of the low-frequency and high-frequency trigger devices are different. As shown in Figure 2, in this embodiment, network access can be provided by installing one access point device, and two or more trigger devices are connected to the access point device. The frequency bands in which the low-frequency and high-frequency trigger devices operate are different, the straight-line distance between the antenna of the low-frequency trigger device (which operates at a lower frequency) and the antenna of the access point device is greater than or equal to the distance between the antenna of the high-frequency trigger device (which operates at a higher frequency) and the antenna of the access point device, the low-frequency and high-frequency trigger devices can transmit sensing messages to the access point device at regular intervals, and the low-frequency and high-frequency trigger devices may be a single 802.11 device that can operate simultaneously in two frequency bands, in which case low frequency and high frequency are defined by the actual operating frequency of the trigger device. To make it clear, there may be multiple low-frequency and high-frequency trigger devices, and there are no particular limitations here.

[0062] As can be understood, the coverage range of low-frequency trigger devices is wider than that of high-frequency trigger devices, and under equivalent power, the coverage range of wireless sensing increases with decreasing frequency. Therefore, the coverage range of low-frequency trigger devices is wider than that of high-frequency trigger devices. In the embodiments of the present invention, when the user is at the far end, a low-frequency link is used to increase coverage, and when the user is at the near end, a high-frequency link is used to improve recognition performance. By rationally planning and scheduling multi-frequency trigger devices compared to using only single-frequency trigger devices, the performance of the sensing algorithm can be improved and the coverage of the sensing algorithm can be increased.

[0063] In this embodiment, simultaneous multilink transmission and reception are achieved using low-frequency trigger devices and high-frequency trigger devices, while ensuring high accuracy and wide coverage of wireless sensing.

[0064] As shown in Figure 8, in one embodiment, step S104 may further include steps S601 to S603, but is not limited to these.

[0065] Step S601: The operating state in which the high-frequency trigger device sends sensing messages is adjusted by sending configuration information to the high-frequency trigger device according to the channel determination result of the high-frequency trigger device.

[0066] Step S602: Depending on the channel determination result of the high-frequency trigger device, it is determined whether or not to adjust the operating state of the low-frequency trigger device to send a sensing message.

[0067] Step S603: If the answer is YES, configuration information is sent to the low-frequency trigger device according to the channel determination result of the low-frequency trigger device, thereby adjusting the operating state in which the low-frequency trigger device sends sensing messages.

[0068] In one embodiment, since the high-frequency trigger device is installed at the near end approaching the access point device, the embodiment of the present invention first adjusts the operating state in which the high-frequency trigger device transmits sensing messages by transmitting configuration information to the high-frequency trigger device according to the channel determination result of the high-frequency trigger device, and then it is necessary to determine whether or not to adjust the operating state in which the low-frequency trigger device at the far end transmits sensing messages. The embodiment of the present invention determines whether or not to adjust the operating state in which the low-frequency trigger device transmits sensing messages according to the channel determination result of the high-frequency trigger device, and if the determination result indicates approval, it adjusts the operating state in which the low-frequency trigger device transmits sensing messages by transmitting configuration information to the low-frequency trigger device according to the channel determination result of the low-frequency trigger device.

[0069] To make it easier to understand, the wireless sensing method in the embodiment of the present invention first adjusts the high-frequency trigger device at the near end, and then determines whether or not it is necessary to adjust the low-frequency trigger device at the far end based on the channel determination result in the high-frequency trigger device. With this adjustment method, if the embodiment of the present invention determines that the object is at the near end, it prioritizes improving the sensing capability of the high-frequency trigger device at the near end, and then determines whether or not to adjust the low-frequency trigger device at the far end based on the actual situation of the medium-high frequency trigger device at the near end, and after obtaining the determination result, it adjusts the low-frequency trigger device at the far end to simultaneously improve the algorithm coverage capability of both the near and far ends.

[0070] In one embodiment, the embodiment of the present invention determines whether or not to adjust the operating state of the low-frequency trigger device that transmits a sensing message, according to the channel determination result of the high-frequency trigger device. The channel determination result of the high-frequency trigger device includes whether or not an object exists within the coverage range of the corresponding high-frequency trigger device. If there is a high-frequency trigger device at the nearest end that has an object within its coverage range, or if there are many high-frequency trigger devices that have an object within their coverage range, it can be determined not to adjust the low-frequency trigger device. In this case, the sensing capability of the high-frequency trigger device at the nearest end is prioritized for improvement. If there is no high-frequency trigger device at the nearest end that has an object within its coverage range, or if there are few high-frequency trigger devices that have an object within their coverage range, it can be determined to adjust the low-frequency trigger device. Thus, the embodiment realizes the determination of whether or not to adjust the low-frequency trigger device according to the channel determination result of the high-frequency trigger device.

[0071] To make it clear, in the embodiments of the present invention, sensing messages from low-frequency trigger devices and high-frequency trigger devices are collected within each time period, and when processing the sensing messages to determine whether or not to adjust the operating state of the trigger devices to transmit sensing messages depending on whether or not a person is present within their coverage range, the sensing messages of the high-frequency trigger devices are processed first to make a determination, and if the conditions for adjusting the operating state of the low-frequency trigger devices to transmit sensing messages are met, the sensing messages of the low-frequency trigger devices are processed, thereby reducing the computational and processing pressure on the devices, improving the planning and scheduling capabilities of wireless sensing, improving the operating efficiency of the devices, and effectively improving sensing capability and efficiency.

[0072] As shown in Figure 9, in one embodiment, step S602 may further include steps S701 to S702, but is not limited to these.

[0073] Step S701: If the channel determination results of all high-frequency trigger devices indicate that no object is present within the coverage range, it is decided to adjust the operating state of the low-frequency trigger devices to send sensing messages.

[0074] Step S701: If the channel determination result of the high-frequency trigger device indicates that an object exists within the coverage range, it is decided not to adjust the operating state of the low-frequency trigger device that transmits sensing messages, or to decide whether or not to adjust the operating state of the low-frequency trigger device that transmits sensing messages, depending on the number of high-frequency trigger devices in which objects exist within the coverage range.

[0075] In one embodiment, the embodiment of the present invention determines whether or not to adjust the operating state of the low-frequency trigger device in which it transmits a sensing message, depending on the channel determination result of the high-frequency trigger device. In some embodiments, if the channel determination results of all high-frequency trigger devices indicate that no object exists within the coverage range, it is determined to adjust the operating state of the low-frequency trigger device in which it transmits a sensing message. This indicates that no object exists within the coverage range of the high-frequency trigger device at the nearest end, and there is no need to improve the sensing capability of the high-frequency trigger device at the nearest end. Therefore, it can be determined to adjust the low-frequency trigger device at the far end.

[0076] Furthermore, if the channel determination result of the high-frequency trigger device indicates that an object is present within its coverage range, it is possible to determine whether or not to adjust the low-frequency trigger device at the far end by pre-setting conditions. In some embodiments, if an object is present within the coverage range of one high-frequency trigger device, the low-frequency trigger device at the far end may not be adjusted, and when certain requirements are met, priority is given to improving the sensing capability and efficiency at the near end. In addition, the decision criterion may be to determine whether to adjust the operating state of low-frequency trigger devices that transmit sensing messages depending on the number of high-frequency trigger devices in which objects exist within the coverage range. For example, an access point device may pre-set a first quantitative threshold for determining whether to adjust the operating state of low-frequency trigger devices at the far end that transmit sensing messages. If the number of high-frequency trigger devices in which objects exist within the coverage range is less than the first quantitative threshold, it indicates that the number of high-frequency trigger devices at the near end that require adjustment is within a controllable range, and that adjusting the low-frequency trigger devices at the far end does not affect the occupation of air interface resources. Therefore, it is determined that the operating state of low-frequency trigger devices that transmit sensing messages can be adjusted. If the number of high-frequency trigger devices in which objects exist within the coverage range is greater than the first quantitative threshold, it indicates that improving the sensing performance of low-frequency trigger devices at the far end after improving the sensing performance of high-frequency trigger devices at the near end would affect the overall sensing capability of the system, and therefore, the low-frequency trigger devices at the far end are not adjusted.

[0077] As shown in Figure 10, in one embodiment, step S104 may further include steps S801 to S802, but is not limited to these.

[0078] Step S801: Trigger devices that have been determined to have an object within the coverage range based on the channel determination result transmit first configuration information to other trigger devices that have an object within the coverage range, thereby improving the amount of information in the sensing message transmitted by the trigger device.

[0079] Step S802: Alternatively, a trigger device that has determined that no object exists within the coverage range based on the channel determination result transmits second configuration information to other trigger devices where no object exists within the coverage range, thereby causing the trigger device to reduce or stop transmitting sensing messages.

[0080] In one embodiment, during the process of adjusting the operating state in which a trigger device transmits a sensing message, if the channel determination result of the trigger device determines that an object exists within the coverage range, the access point device transmits first configuration information to the trigger device in which the object exists within the coverage range, thereby improving the amount of information in the sensing message transmitted by these trigger devices, thereby improving the sensing performance of these trigger devices, improving the amount of information in the channel state information, and contributing to analysis to obtain user movements within the coverage range. On the other hand, for trigger devices in which the channel determination result determines that no object exists within the coverage range, the access point device transmits second configuration information to the trigger device in which no object exists within the coverage range, thereby reducing or stopping the transmission of sensing messages by these trigger devices. If such trigger devices continue to transmit sensing messages when no object exists within their coverage range, they will occupy air interface resources and cause a decrease in wireless sensing performance. Therefore, by reducing or stopping the transmission of sensing messages by such trigger devices, the occupation of air interface resources can be effectively reduced.

[0081] In one embodiment, before step S101, The process may further include, but is not limited to, transmitting initial configuration information to multiple trigger devices, thereby configuring the operating frequency band of each trigger device to a first operating frequency band after the trigger devices have received the initial configuration information.

[0082] Furthermore, step S801 described above is The process may further include, but is not limited to, a step in which a trigger device transmits first configuration information to a trigger device in which an object is located within its coverage range, thereby causing the trigger device to increase its operating frequency band from a first operating frequency band to a second operating frequency band.

[0083] In one embodiment, the embodiment of the present invention first transmits one initial configuration information to all trigger devices before performing the wireless sensing method, so that the trigger devices configure and understand their own operating frequency band to a first operating frequency band after receiving the initial configuration information. The first operating frequency band is a low operating frequency band, and operating in this frequency band can save power to the trigger devices and reduce the occupation of the air interface. When adjusting a trigger device to which an object is within coverage range, an access point device can transmit the first configuration information to it, and the trigger device raises its operating frequency band from the first operating frequency band to a second operating frequency band after receiving the first configuration information.

[0084] For example, the embodiment of the present invention saves power to trigger devices and reduces the occupation of the air interface by transmitting initial configuration information and initializing all trigger devices to operate in the 20MHz operating frequency band in the default configuration. To understand, for 2.4G trigger devices, the operating frequency band may be 20MHz or 40MHz, and for 5G trigger devices, the operating frequency band may be 20MHz, 40MHz or 80MHz. To understand, trigger devices can also operate in higher frequency bands. When an access point device adjusts a trigger device to have an object within its coverage range, it is necessary to improve the recognition performance of the sensing algorithm and increase the operating frequency of the corresponding trigger device from 20MHz to a higher frequency band such as 40MHz or above, thereby improving the amount of information in the channel state information ultimately obtained, which is a direct improvement in sensing performance.

[0085] To make it clear, embodiments of the present invention also improve the performance of the sensing algorithm by increasing the bandwidth, i.e., by increasing the operating frequency band of the trigger device, and embodiments of the present invention can improve the performance of the sensing algorithm by dynamically increasing the bandwidth when it is found to be near the edge, thereby reducing the occupation of air interface resources as much as possible.

[0086] As shown in Figure 11, in one embodiment, the wireless sensing method may further include steps S901 to S902, but is not limited thereto.

[0087] Step S901: Determine the trigger device in which the target object is located within the coverage range based on the channel determination result, and obtain third configuration information.

[0088] Step S902: Depending on the third configuration information, increase the power to transmit communication information to the trigger device where the target object is located within the coverage range, or, depending on the third configuration information, reduce the extended distributed channel access parameters of the access point device.

[0089] In one embodiment, if it is determined that an object exists within the coverage range of a trigger device, the embodiment of the present application can obtain a third configuration information in order to improve sensing performance. Depending on the third configuration information, the transmission power of communication information to the trigger device in which the object exists within the coverage range can be increased, or the Enhanced Distributed Channel Access (EDCA) parameter of the access point device can be reduced depending on the third configuration information. To make it clear, in the above embodiment, increasing the operating frequency band of the trigger device is a direct improvement method, while in the embodiment of the present application, the transmission power may be increased or the EDCA parameter reduced by an indirect improvement method. The direct improvement method can increase the amount of channel state information in any case, while the indirect improvement method is effective only when the channel is congested, and is not particularly limited thereto.

[0090] Furthermore, in the embodiment of the present invention, in order to directly improve sensing performance, in addition to directly improving the operating frequency band of the trigger device, the time interval at which the trigger device transmits sensing messages may also be reduced, that is, the time period described in the above embodiment may be reduced, thereby similarly improving the amount of information in the sensing messages, and ultimately improving the amount of information in the channel state information, thereby improving the performance of wireless sensing.

[0091] As shown in Figure 12, in one embodiment, step S101 may further include steps S1001 to S1002, but is not limited to these.

[0092] Step S1001: Determine a one-to-one timestamp for each trigger device and send the timestamp to each trigger device so that the trigger device sends a sensing message according to the corresponding timestamp.

[0093] Step S1002: The system receives sensing messages sent by multiple trigger devices according to their respective timestamps.

[0094] In one embodiment, the access point device can pre-configure the timing for each trigger device to send sensing messages in order to avoid situations where multiple trigger devices send sensing messages simultaneously and to avoid congestion on the air interface. In some embodiments, the access point device determines a one-to-one timestamp corresponding to each trigger device, sends the timestamp to each trigger device, and after the trigger device receives the corresponding timestamp, sends a sensing message according to the corresponding timestamp, thereby allowing the access point device to receive sensing messages sent by multiple trigger devices according to their corresponding timestamps, and as can be understood, since the timestamps between different trigger devices are different, situations where multiple trigger devices send sensing messages simultaneously can be avoided.

[0095] In one embodiment, the trigger device includes a low-frequency trigger device and a high-frequency trigger device, and as shown in Figure 13, the timestamp in the above embodiment is obtained by the following steps, which may include but are not limited to steps S1101 to S1105.

[0096] Step S1101: Obtain the number of low-frequency trigger devices and high-frequency trigger devices, respectively.

[0097] Step S1102: Number the low-frequency trigger devices and high-frequency trigger devices according to the number of devices.

[0098] Step S1103: Obtain the time period during which the low-frequency trigger device and the high-frequency trigger device send sensing messages at intervals.

[0099] Step S1104: Obtain a timestamp for each high-frequency trigger device according to the number of devices, the number of the high-frequency trigger device, and the time period.

[0100] Step S1105: Obtain the timestamp for each low-frequency trigger device according to the number of devices, the number of the low-frequency trigger device, the timestamp of the high-frequency trigger device with the last digit, and the time period.

[0101] In one embodiment, the access point device transmits one timestamp to each trigger device and sequentially numbers each trigger device according to the number of low-frequency and high-frequency trigger devices, so that the trigger devices sequentially transmit sensing messages according to different numbers, the access point device further obtains the time period during which the low-frequency and high-frequency trigger devices transmit sensing messages at intervals, obtains the timestamp for each high-frequency trigger device according to the number of devices, the number of the high-frequency trigger device, and the time period, obtains the timestamp for each low-frequency trigger device according to the number of devices, the number of the low-frequency trigger device, the timestamp of the last-digit high-frequency trigger device, and the time period, so that the timestamps of each trigger device are different and understandable, in this embodiment of the application, priority is given to the transmission of sensing messages from high-frequency trigger devices at the near end, and then the sensing messages transmitted from low-frequency trigger devices at the far end in the same time period are received.

[0102] TIFF0007839317000001.tif39163

[0103] TIFF0007839317000002.tif26169

[0104] TIFF0007839317000003.tif51169

[0105] Embodiments of the present application further provide a wireless sensing method applicable to a trigger device, the trigger device is not described in detail here, and as shown in reference to Figure 14, the wireless sensing method in embodiments of the present application includes, but is not limited to, steps S1201 to S1202.

[0106] Step S1201: By sending a sensing message to the access point device, the access point device obtains the corresponding channel status information in accordance with the sensing message, determines whether or not an object exists within the coverage range of the corresponding trigger device according to the channel status information, obtains a channel determination result, and the access point device further obtains configuration information according to the channel determination result.

[0107] Step S1202: Receive configuration information transmitted from the access point device and adjust the operating state for sending sensing messages according to the configuration information.

[0108] In one embodiment, a trigger device is connected to an access point device, and the trigger device can send sensing messages to the access point device. After receiving the sensing messages, the access point device obtains channel state information for each corresponding trigger device according to the sensing messages, and can determine the user's actions within the signal coverage range of the corresponding trigger device based on the channel state information. In the embodiment of the present application, it is possible to determine whether or not an object exists within the coverage range of the corresponding trigger device based on the channel state information and obtain a channel determination result. In some embodiments, the channel determination result includes two results: that an object exists within the coverage range of the corresponding trigger device, or that an object does not exist within the coverage range of the corresponding trigger device. Based on these two results, the access point device can obtain configuration information and send it to the trigger device. After receiving the configuration information, the trigger device can control itself and adjust the operating state in which the trigger device itself sends sensing messages.

[0109] To make it understandable, the trigger device can adjust its operating state by either adjusting whether or not to send a sensing message, adjusting the frequency at which it sends the sensing message, or adjusting the frequency band or amount of information of the transmitted sensing message, thereby allowing the trigger device to adjust depending on whether or not an object is present within its coverage range.

[0110] According to the embodiment of the present invention, the trigger device can reduce its occupation of air interface resources after adjusting its operating state for transmitting sensing messages, and the trigger device can adjust its operating state for transmitting sensing messages depending on whether or not an object is present within the coverage range, thereby enabling rational planning and scheduling of multiple trigger devices and further effectively improving the capability and efficiency of wireless sensing.

[0111] To make it clear, for trigger devices where an object is present within the coverage range, the embodiments of the present invention can improve the sensing performance, while for trigger devices where no object is present within the coverage range, the embodiments of the present invention can reduce the sensing performance, thereby reducing the occupation of air interface resources and improving the capability and efficiency of wireless sensing.

[0112] In one embodiment, the trigger device that transmits a sensing message to the access point device includes a low-frequency trigger device and a high-frequency trigger device.

[0113] In the embodiments of this application, trigger devices are divided into low-frequency trigger devices and high-frequency trigger devices. A given trigger device may be both a low-frequency trigger device and / or a high-frequency trigger device. The frequencies of the low-frequency trigger devices and high-frequency trigger devices are different. As shown in Figure 2, in the embodiments of this application, network access can be provided by installing one access point device, and two or more trigger devices are connected to the access point device. The frequency bands in which the low-frequency trigger devices and high-frequency trigger devices operate are different. The straight-line distance between the antenna of the low-frequency trigger device (which operates at a lower frequency) and the antenna of the access point device is greater than or equal to the distance between the antenna of the high-frequency trigger device (which operates at a higher frequency) and the antenna of the access point device. The low-frequency trigger devices and high-frequency trigger devices can transmit sensing messages to the access point device at regular intervals. The low-frequency trigger devices and high-frequency trigger devices may be a single 802.11 device that can operate simultaneously in two frequency bands. To make it clear, there may be multiple low-frequency trigger devices and high-frequency trigger devices, and there are no particular limitations here.

[0114] As can be understood, the coverage range of low-frequency trigger devices is wider than that of high-frequency trigger devices, and under equivalent power, the coverage range of wireless sensing increases with decreasing frequency. Therefore, the coverage range of low-frequency trigger devices is wider than that of high-frequency trigger devices. In the embodiments of the present invention, when the user is at the far end, a low-frequency link is used to increase the coverage range, and when the user is at the near end, a high-frequency link is used to improve recognition performance. By rationally planning and scheduling multi-frequency trigger devices compared to using only single-frequency trigger devices, the performance of the sensing algorithm can be improved and the coverage of the sensing algorithm can be increased.

[0115] In one embodiment, when the wireless sensing method in the embodiment of the present application is applied to a high-frequency trigger device, the access point device is configured to obtain configuration information according to the channel determination result of the high-frequency trigger device. When the wireless sensing method in the embodiment of the present invention is applied to a low-frequency trigger device, the access point device is configured to determine whether or not to adjust the operating state of the low-frequency trigger device to transmit a sensing message according to the channel determination result of the remaining high-frequency trigger devices, and if the answer is YES, to obtain configuration information according to the channel determination result of the low-frequency trigger device.

[0116] In one embodiment, the high-frequency trigger device is installed at the near end, close to the access point device. In this embodiment, the access point device first adjusts the operating state in which the high-frequency trigger device transmits sensing messages by transmitting configuration information to the high-frequency trigger device according to the channel determination result of the high-frequency trigger device, and then determines whether or not to adjust the operating state in which the low-frequency trigger device at the far end transmits sensing messages. In this embodiment, the access point device determines whether or not to adjust the operating state in which the low-frequency trigger device transmits sensing messages according to the channel determination result of the high-frequency trigger device. If the trigger device is a low-frequency trigger device, the access point device makes a determination according to the remaining high-frequency trigger devices connected to it, and if the determination result indicates approval, it adjusts the operating state in which the low-frequency trigger device transmits sensing messages by transmitting configuration information to the low-frequency trigger device according to the channel determination result of the low-frequency trigger device.

[0117] To make it easier to understand, the wireless sensing method in the embodiment of the present invention first adjusts the high-frequency trigger device at the near end, and then determines whether or not it is necessary to adjust the low-frequency trigger device at the far end based on the channel determination result in the high-frequency trigger device. With this adjustment method, if it is determined that the high-frequency trigger device at the near end is located, the embodiment of the present invention prioritizes improving the sensing capability of the high-frequency trigger device at the near end, and then determines whether or not to adjust the low-frequency trigger device at the far end based on the actual situation of the medium-high frequency trigger device at the near end. After obtaining the determination result, the low-frequency trigger device at the far end is adjusted to simultaneously improve the algorithm coverage capability of both the near and far ends.

[0118] In one embodiment, the access point device is further configured to decide to adjust the operating state of the low-frequency trigger devices to send sensing messages if the channel determination results of all high-frequency trigger devices indicate that no objects exist within the coverage range, and to decide not to adjust the operating state of the low-frequency trigger devices to send sensing messages if the channel determination results of the high-frequency trigger devices indicate that objects exist within the coverage range, or to decide whether or not to adjust the operating state of the low-frequency trigger devices to send sensing messages depending on the number of high-frequency trigger devices in which objects exist within the coverage range.

[0119] In one embodiment, in the embodiment of the present invention, the access point device determines whether or not to adjust the operating state of the low-frequency trigger device to transmit sensing messages, depending on the channel determination result of the high-frequency trigger device. In some embodiments, if the channel determination results of all high-frequency trigger devices indicate that no object exists within the coverage range, it is determined to adjust the operating state of the low-frequency trigger device to transmit sensing messages. This indicates that no object exists within the coverage range of the high-frequency trigger device at the nearest end, and there is no need to improve the sensing capability of the high-frequency trigger device at the nearest end. Therefore, it can be determined to adjust the low-frequency trigger device at the far end.

[0120] Furthermore, if the channel determination result of the high-frequency trigger device indicates that an object is present within its coverage range, the access point device can determine whether or not to adjust the low-frequency trigger device at the far end by pre-setting conditions. In some embodiments, if an object is present within the coverage range of one high-frequency trigger device, the low-frequency trigger device at the far end may not be adjusted, prioritizing improved sensing capability and efficiency at the near end when certain requirements are met. In addition, the decision criterion may be to determine whether to adjust the operating state of low-frequency trigger devices that transmit sensing messages depending on the number of high-frequency trigger devices in which objects exist within the coverage range. For example, an access point device may pre-set a first quantitative threshold for determining whether to adjust the operating state of low-frequency trigger devices at the far end that transmit sensing messages. If the number of high-frequency trigger devices in which objects exist within the coverage range is less than the first quantitative threshold, it indicates that the number of high-frequency trigger devices at the near end that require adjustment is within a controllable range, and that adjusting the low-frequency trigger devices at the far end does not affect the occupation of air interface resources. Therefore, it is determined that the operating state of low-frequency trigger devices that transmit sensing messages can be adjusted. If the number of high-frequency trigger devices in which objects exist within the coverage range is greater than the first quantitative threshold, it indicates that improving the sensing performance of low-frequency trigger devices at the far end after improving the sensing performance of high-frequency trigger devices at the near end would affect the overall sensing capability of the system, and therefore, the low-frequency trigger devices at the far end are not adjusted.

[0121] As shown in Figure 15, in one embodiment, step S1202 may further include steps S1301 to S1302, but is not limited to these.

[0122] Step S1301: The amount of information in the transmitted sensing message is improved by receiving the first configuration information transmitted from the access point device, and the first configuration information is obtained by the access point device when an object is within the coverage range of the trigger device.

[0123] Step S1302: The second configuration information transmitted from the access point device is received, and the transmission of sensing messages is reduced or stopped according to the second configuration information, which is obtained by the access point device if no object is present within the coverage range of the trigger device.

[0124] In one embodiment, during the process of adjusting the operating state in which a trigger device transmits a sensing message, if the channel determination result of the trigger device determines that an object exists within the coverage range, the access point device transmits first configuration information to the trigger device in which the object exists within the coverage range. After the trigger device receives the first configuration information, it improves the amount of information in the transmitted sensing message, thereby improving the sensing performance of these trigger devices, improving the amount of information in the channel state information, and contributing to analysis to obtain user movements within the coverage range. On the other hand, for trigger devices in which the channel determination result determines that no object exists within the coverage range, the access point device transmits second configuration information to the trigger device in which no object exists within the coverage range. After the trigger device receives the second configuration information, it reduces or stops transmitting sensing messages. Such trigger devices, if they do not have an object within their coverage range and continue to transmit sensing messages, will occupy air interface resources and cause a decrease in wireless sensing performance. Therefore, by reducing or stopping the transmission of sensing messages by such trigger devices, the occupation of air interface resources can be effectively reduced.

[0125] In one embodiment, before step S1201, The procedure may further include, but is not limited to, receiving initial configuration information transmitted from an access point device and configuring the operating frequency band to a first operating frequency band according to the initial configuration information.

[0126] Furthermore, in step S1301 above, The process may further include, but is not limited to, receiving first configuration information transmitted from an access point device and increasing the operating frequency band from a first operating frequency band to a second operating frequency band according to the first configuration information.

[0127] In one embodiment, before performing the wireless sensing method, the embodiment of the present application first transmits one initial configuration information to all trigger devices so that the trigger devices configure their own operating frequency band to a first operating frequency band after receiving the initial configuration information, and so that they can understand that the first operating frequency band is a low operating frequency band, and operating in this frequency band can save power to the trigger devices and reduce the occupation of the air interface. When adjusting a trigger device in which an object is within coverage range, the access point device can transmit the first configuration information to it, and the trigger device raises its operating frequency band from the first operating frequency band to a second operating frequency band after receiving the first configuration information.

[0128] For example, in the embodiments of the present invention, the access point device transmits initial configuration information and initializes all trigger devices to operate in the 20MHz operating frequency band in the default configuration, thereby saving power to the trigger devices and reducing the occupation of the air interface. To understand, for 2.4G trigger devices, the operating frequency band may be 20MHz or 40MHz, and for 5G trigger devices, the operating frequency band may be 20MHz, 40MHz or 80MHz. To understand, trigger devices can also operate in higher frequency bands. When the access point device adjusts trigger devices to have objects within its coverage range, it is necessary to improve the recognition performance of the sensing algorithm and increase the operating frequency of the corresponding trigger device from 20MHz to a higher frequency band such as 40MHz or above, thereby improving the amount of information in the channel state information ultimately obtained, which is a direct improvement in sensing performance.

[0129] To make it clear, embodiments of the present invention also improve the performance of the sensing algorithm by increasing the bandwidth, i.e., by increasing the operating frequency band of the trigger device, and embodiments of the present invention can improve the performance of the sensing algorithm by dynamically increasing the bandwidth when it is found to be near the edge, thereby reducing the occupation of air interface resources as much as possible.

[0130] In one embodiment, if an object exists within the coverage range of a trigger device, the access point device can obtain further third configuration information, and the access point device is configured to either increase the power to transmit communication information to the trigger device in which the object exists within the coverage range, or to reduce the extended distributed channel access parameters according to the third configuration information.

[0131] In one embodiment, if it is determined that an object exists within the coverage range of a trigger device, in order to improve sensing performance, in this embodiment, the access point device may obtain third configuration information and, according to the third configuration information, increase the transmission power of communication information with the trigger device in which the object exists within the coverage range, or decrease the extended EDCA parameters according to the third configuration information. To make it clear, in the above embodiment, increasing the operating frequency band of the trigger device is a direct improvement method, and in this embodiment, the access point device may also increase the transmission power or decrease the EDCA parameters by an indirect improvement method. The direct improvement method can increase the amount of channel state information in any case, while the indirect improvement method is effective only when the channel is congested, and is not particularly limited thereto.

[0132] Furthermore, in the embodiment of the present invention, in order to directly improve sensing performance, in addition to directly improving the operating frequency band of the trigger device, the time interval at which the trigger device transmits sensing messages may also be reduced, that is, the time period described in the above embodiment may be reduced, thereby similarly improving the amount of information in the sensing messages, and ultimately improving the amount of information in the channel state information, thereby improving the performance of wireless sensing.

[0133] As shown in Figure 16, in one embodiment, step S1201 may further include steps S1401 to S1402, but is not limited to these.

[0134] Step S1401: Receive the timestamp sent from the access point device, and the timestamp corresponds one-to-one with the trigger device.

[0135] Step S1402: Send a sensing message to the access point device according to the timestamp.

[0136] In one embodiment, the access point device can pre-configure the timing for each trigger device to send sensing messages in order to avoid situations where multiple trigger devices send sensing messages simultaneously and to avoid congestion on the air interface. In some embodiments, the access point device determines a one-to-one timestamp corresponding to each trigger device, sends the timestamp to each trigger device, and after the trigger device receives the corresponding timestamp, sends a sensing message according to the corresponding timestamp, thereby allowing the access point device to receive sensing messages sent by multiple trigger devices according to their corresponding timestamps, and as can be understood, since the timestamps between different trigger devices are different, situations where multiple trigger devices send sensing messages simultaneously can be avoided.

[0137] In one embodiment, the trigger device is a low-frequency trigger device or a high-frequency trigger device, and the access point device is connected to multiple low-frequency trigger devices and high-frequency trigger devices, respectively. If the trigger device is a high-frequency trigger device, the timestamp is obtained by the access point device according to the number of low-frequency and high-frequency trigger devices, the number of the high-frequency trigger device, and the time period during which the high-frequency trigger device transmits sensing messages at intervals. If the trigger device is a low-frequency trigger device, the timestamp is obtained by the access point device according to the number of devices, the number of the low-frequency trigger device, the timestamp of the last digit of the high-frequency trigger device connected to the access point device, and the time period during which the low-frequency trigger device transmits sensing messages at intervals.

[0138] In one embodiment, the access point device transmits one timestamp to each trigger device and sequentially numbers each trigger device according to the number of low-frequency and high-frequency trigger devices, so that the trigger devices sequentially transmit sensing messages according to different numbers, the access point device further obtains the time period during which the low-frequency and high-frequency trigger devices transmit sensing messages at intervals, obtains the timestamp for each high-frequency trigger device according to the number of devices, the number of the high-frequency trigger device, and the time period, obtains the timestamp for each low-frequency trigger device according to the number of devices, the number of the low-frequency trigger device, the timestamp of the last-digit high-frequency trigger device, and the time period, so that the timestamps of each trigger device are different and understandable, in this embodiment of the application, priority is given to the transmission of sensing messages from high-frequency trigger devices at the near end, and then the sensing messages transmitted from low-frequency trigger devices at the far end in the same time period are received.

[0139] TIFF0007839317000004.tif38168

[0140] TIFF0007839317000005.tif32168

[0141] TIFF0007839317000006.tif47168

[0142] In addition, the embodiments of this application provide the following embodiments, which include the following steps.

[0143] 1. By initializing all trigger devices to operate in the 20MHz operating frequency band in the default configuration, power consumption of trigger devices is reduced, and their occupation of air interface resources is decreased.

[0144] TIFF0007839317000007.tif37168

[0145] TIFF0007839317000008.tif33168

[0146] TIFF0007839317000009.tif32168

[0147] TIFF0007839317000010.tif29168

[0148] TIFF0007839317000011.tif40168

[0149] The interpolation method may be as follows:

[0150] TIFF0007839317000012.tif76168

[0151] TIFF0007839317000013.tif52168

[0152] (3) Interpolate using the CSI closest to the standard time.

[0153] 5. Using K CSIs, determine whether or not an object is within the coverage range of the i-th high-frequency trigger device. The determination method may be as follows:

[0154] (1) The covariance matrix of K CSI() is calculated, and if there is a diagonal element in the covariance that is greater than the threshold τ, it is determined that the object is within the coverage range of the high-frequency trigger device.

[0155] (2) A pre-trained neural network is used to determine whether or not an object exists within the coverage area.

[0156] For all N high-frequency trigger devices, a similar determination must be made to determine whether or not an object exists within its coverage range.

[0157] 6. By adjusting the parameters of all high-frequency trigger devices that were determined to have an object within the coverage range in step 5, the amount of information in the CSI is improved, and the recognition performance of the sensing algorithm is further enhanced. The adjustable parameters are divided into the following two tiers.

[0158] (1) Direct improvement method: Increase the transmission frequency band from 20 MHz to a higher frequency band, or decrease the transmission interval T.

[0159] (2) Indirect improvement methods: Increase the transmission power or decrease the EDCA parameters.

[0160] Direct enhancement methods can improve the amount of information in CSI under any circumstances, while indirect enhancement methods are only effective when channels are congested.

[0161] TIFF0007839317000014.tif43168

[0162] 8. Using the CSI acquisition method described in step 4, CSI data is continuously acquired from a high-frequency trigger device or a low-frequency trigger device and transmitted for subsequent processing.

[0163] Figure 17 shows an electronic device 100 according to an embodiment of the present invention. The electronic device 100 includes a processor 110, a memory 120, and a computer program stored in the memory 120 and executable on the processor 110, which, when executed, is used to perform the wireless sensing method described above.

[0164] The processor 110 and the memory 120 may be connected via a bus or other means.

[0165] The memory 120 can be used as a non-temporary computer-readable storage medium to store non-temporary software programs and non-temporary computer executable programs, such as the wireless sensing method described in the embodiment of this application. The processor 110 implements the wireless sensing method by executing the non-temporary software programs and instructions stored in the memory 120.

[0166] The memory 120 may include an operating system, a program storage area capable of storing application programs required for at least one function, and a data storage area capable of storing and executing the wireless sensing method described above. The memory 120 may also include a high-speed random-access memory 120, and may further include non-temporary memory 120 such as at least one storage device, flash memory device, or other non-temporary solid-state storage device. In some embodiments, the memory 120 may include memory 120 remotely installed relative to the processor 110, and these remote memories 120 may be connected to the electronic device 100 via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0167] The non-temporary software programs and instructions necessary to implement the above wireless sensing method are stored in memory 120 and, when executed by one or more processors 110, execute the above wireless sensing method, for example, steps S101 to S104 of the method in Figure 3, steps S201 to S202 of the method in Figure 4, steps S301 to S302 of the method in Figure 5, steps S401 to S404 of the method in Figure 6, steps S501 to S502 of the method in Figure 7, and steps S8 of the method Perform steps 601 to S603, steps S701 to S702 of the method in Figure 9, steps S801 to S802 of the method in Figure 10, steps S901 to S902 of the method in Figure 11, steps S1001 to S1002 of the method in Figure 12, steps S1101 to S1105 of the method in Figure 13, steps S1201 to S1202 of the method in Figure 14, steps S1301 to S1302 of the method in Figure 15, and steps S1401 to S1402 of the method in Figure 16.

[0168] Embodiments of the present invention further provide a computer-readable storage medium on which computer-executable instructions for performing the above-mentioned wireless sensing method are stored.

[0169] In one embodiment, the computer-readable storage medium stores computer-executable instructions, which, when executed by one or more control processors, result in steps S101 to S104 of the method in Figure 3, steps S201 to S202 of the method in Figure 4, steps S301 to S302 of the method in Figure 5, steps S401 to S404 of the method in Figure 6, steps S501 to S502 of the method in Figure 7, and steps S601 to S8 of the method in Figure 8. S603, the steps S701 to S702 of the method in Figure 9, steps S801 to S802 of the method in Figure 10, steps S901 to S902 of the method in Figure 11, steps S1001 to S1002 of the method in Figure 12, steps S1101 to S1105 of the method in Figure 13, steps S1201 to S1202 of the method in Figure 14, steps S1301 to S1302 of the method in Figure 15, and steps S1401 to S1402 of the method in Figure 16 are performed.

[0170] The embodiments of the present invention include at least the following beneficial effects. The wireless sensing method in the embodiments of the present invention can be applied to an access point device and a trigger device, the access point device is connected to multiple trigger devices in communication, and by applying the wireless sensing method, the access point device can receive sensing messages transmitted from the trigger devices, obtain channel status information of the corresponding trigger device according to the sensing message, and further determine whether or not an object exists within the coverage range of the corresponding trigger device according to the channel status information and obtain a channel determination result. Subsequently, the access point device transmits configuration information to the trigger device according to the channel determination result, so that the trigger device can adjust its operating state for transmitting sensing messages according to the configuration information, and after adjusting its operating state for transmitting sensing messages, the trigger device can reduce its occupation of air interface resources, and the trigger device can adjust its operating state for transmitting sensing messages depending on whether or not an object exists within the coverage range, thereby realizing rational planning and scheduling of multiple trigger devices and further effectively improving the capability and efficiency of wireless sensing.

[0171] The apparatus embodiments described above are merely illustrative, and the units described as separating members may or may not be physically separated; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the technical solution of this embodiment.

[0172] As those skilled in the art will understand, all or some steps or systems of the methods disclosed herein may be implemented as software, firmware, hardware, or appropriate combinations thereof. Some or all physical components may be implemented as software running on a processor such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit such as an application-specific integrated circuit. Such software may be distributed on computer-readable media, which may include computer storage media (or non-temporary media) and communication media (or temporary media). As those skilled in the art will know, computer storage media include volatile and non-volatile, removable and non-removable media implemented in any method or technique for storing information (e.g., computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory, or other memory technologies, CD-ROM, digital multipurpose disc (DVD), or other optical disc storage, magnetic cassette, magnetic tape, storage device storage, or other magnetic storage devices, or any other media that can be used to store desired information and are accessible by a computer. Furthermore, as is well known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data within modulated data signals such as carriers or other transmission mechanisms, and may include any information transmission medium.

[0173] Furthermore, the various embodiments relating to the present invention can be arbitrarily combined to achieve different technical effects.

[0174] Although some aspects of the implementation of this application have been described in detail above, this application is not limited to the embodiments described above. Those skilled in the art can make various equivalent modifications and substitutions under common conditions that do not depart from the essence of this application, and all such equivalent modifications and substitutions fall within the scope defined in the claims of this application.

Claims

1. A wireless sensing method, applied to an access point device, wherein the access point device is connected to a plurality of trigger devices in communication. The steps include receiving sensing messages transmitted from multiple trigger devices, The steps include obtaining channel status information of the corresponding trigger device in response to the sensing message, The steps include determining whether an object exists within the coverage range of the corresponding trigger device according to the channel status information, and obtaining a channel determination result, The step includes adjusting the operating state in which the trigger device transmits the sensing message by transmitting configuration information to the trigger device in accordance with the channel determination result, The step of adjusting the operating state in which the trigger device transmits the sensing message by transmitting configuration information to the trigger device in accordance with the channel determination result is: The trigger device, which has been determined to have an object within its coverage range according to the channel determination result, transmits first configuration information to the trigger device having an object within its coverage range, thereby improving the amount of information in the sensing message transmitted by the trigger device. Alternatively, if a trigger device determines, based on the channel determination result, that no object exists within the coverage range, the trigger device may transmit second configuration information to the trigger device where no object exists within the coverage range, thereby reducing or stopping the transmission of the sensing message. Wireless sensing method.

2. The trigger device is configured to transmit the sensing message at a predetermined time interval. The step of determining whether or not an object exists within the coverage range of the corresponding trigger device according to the channel status information and obtaining a channel determination result is as follows: The steps include forming sequence information in accordance with the multiple channel state information of each trigger device over multiple time periods, The wireless sensing method according to claim 1, comprising the step of determining whether or not an object exists within the coverage range of the corresponding trigger device according to the sequence information, and obtaining a channel determination result.

3. In accordance with the sequence information, it is determined whether or not an object exists within the coverage range of the corresponding trigger device, and before obtaining the channel determination result, The steps include obtaining the message time interval between each channel state information in the sequence information, The wireless sensing method according to claim 2, further comprising the step of performing interpolation on the sequence information to make the interpolated message time interval correspond to the size of the time period if the message time interval does not correspond to the size of the time period.

4. The step of performing interpolation processing on the sequence information is: The steps include obtaining the standard time of the target channel state information to be interpolated, The steps include: applying inverse distance weighting to the channel state information outside the standard time in the sequence information; performing a weighted average calculation on the channel state information with different weights to obtain target channel state information; and adding the target channel state information to the sequence information. Alternatively, the steps include: obtaining multiple channel state information prior to the standard time in the sequence information; performing a weighted average calculation on the multiple channel state information to obtain target channel state information; and adding the target channel state information to the sequence information. Alternatively, the wireless sensing method according to claim 3, comprising the steps of acquiring channel state information for a time interval corresponding to the standard time in the sequence information, using it as interpolated target channel state information, and adding the target channel state information to the sequence information.

5. The step of determining whether an object exists within the coverage range of the corresponding trigger device according to the sequence information and obtaining a channel determination result is as follows: The covariance matrix of the sequence information is calculated, and based on whether the diagonal elements of the covariance are greater than a threshold, it is determined whether or not an object exists within the coverage range of the corresponding trigger device, and a channel determination result is obtained. Alternatively, the wireless sensing method according to claim 2, comprising the steps of inputting the sequence information into a pre-trained neural network model, obtaining the output result of the neural network model, determining whether or not an object exists within the coverage range of the corresponding trigger device according to the output result, and obtaining a channel determination result.

6. The wireless sensing method according to claim 1, wherein the trigger device includes a low-frequency trigger device and a high-frequency trigger device, and both the low-frequency trigger device and the high-frequency trigger device are configured to transmit the sensing message to the access point device.

7. The step of adjusting the operating state in which the trigger device transmits the sensing message by transmitting configuration information to the trigger device in accordance with the channel determination result is: The steps include: adjusting the operating state in which the high-frequency trigger device transmits the sensing message by transmitting configuration information to the high-frequency trigger device in accordance with the channel determination result of the high-frequency trigger device; The steps include determining whether or not to adjust the operating state of the low-frequency trigger device to transmit the sensing message, in accordance with the channel determination result of the high-frequency trigger device, The wireless sensing method according to claim 6, comprising the step of adjusting the operating state in which the low-frequency trigger device transmits the sensing message, by transmitting configuration information to the low-frequency trigger device in accordance with the channel determination result of the low-frequency trigger device if the answer is YES.

8. The step of determining whether or not to adjust the operating state of the low-frequency trigger device to transmit the sensing message according to the channel determination result of the high-frequency trigger device is: If the channel determination results of all the high-frequency trigger devices indicate that no object exists within the coverage range, the step of deciding to adjust the operating state of the low-frequency trigger device to transmit the sensing message, The wireless sensing method according to claim 7, comprising the step of determining whether to adjust the operating state of the low-frequency trigger device for transmitting the sensing message if the channel determination result of the high-frequency trigger device indicates that an object exists within the coverage range, or whether to adjust the operating state of the low-frequency trigger device for transmitting the sensing message according to the number of high-frequency trigger devices in which objects exist within the coverage range.

9. Before the step of receiving sensing messages transmitted from each of the multiple trigger devices, The process further includes transmitting initial configuration information to each of the multiple trigger devices, thereby configuring the operating frequency band of each trigger device to a first operating frequency band after the trigger devices have received the initial configuration information. The step of transmitting the first configuration information to the trigger device in which the target object is located within the coverage range is: The wireless sensing method according to claim 1, further comprising the step of transmitting first configuration information to the trigger device in which an object exists within the coverage range, thereby causing the trigger device to increase its operating frequency band from the first operating frequency band to the second operating frequency band.

10. The steps include determining the trigger device in which an object exists within the coverage range according to the channel determination result and obtaining third configuration information, The wireless sensing method according to claim 1, further comprising the steps of increasing the communication information transmission power of the trigger device in which an object is located within the coverage range, or decreasing the extended distributed channel access parameters of the access point device, in accordance with the third configuration information.

11. The step of receiving sensing messages transmitted from each of the multiple trigger devices is: The steps include determining a timestamp that corresponds one-to-one with each trigger device, transmitting the timestamp to each trigger device, so that the trigger device transmits the sensing message according to the corresponding timestamp, The wireless sensing method according to claim 1, comprising the step of receiving the sensing messages transmitted by each of the multiple trigger devices in accordance with the corresponding timestamp.

12. The trigger device includes a low-frequency trigger device and a high-frequency trigger device, and the timestamp is The steps include obtaining the number of low-frequency trigger devices and high-frequency trigger devices, respectively. The steps include numbering the low-frequency trigger devices and the high-frequency trigger devices according to the number of devices, The steps include obtaining the time period during which the low-frequency trigger device and the high-frequency trigger device transmit the sensing message at intervals, The steps include obtaining a timestamp for each of the high-frequency trigger devices according to the number of devices, the number of the high-frequency trigger device, and the time period, The wireless sensing method according to claim 11, comprising the steps of obtaining a timestamp for each of the low-frequency trigger devices according to the number of devices, the number of the low-frequency trigger device, the timestamp of the high-frequency trigger device with a last digit, and the time period.

13. A wireless sensing method, applied to a trigger device, wherein the trigger device is in communication connection with an access point device. The access point device transmits a sensing message, which in turn causes the access point device to obtain corresponding channel status information in accordance with the sensing message, determine whether or not an object exists within the coverage range of the corresponding trigger device based on the channel status information, obtain a channel determination result, and further obtain configuration information based on the channel determination result. The steps include receiving the configuration information transmitted from the access point device and adjusting the operating state for transmitting the sensing message according to the configuration information, The step of receiving the configuration information transmitted from the access point device and adjusting the operating state for transmitting the sensing message according to the configuration information is: A step of improving the amount of information in the transmitted sensing message by receiving first configuration information transmitted from the access point device, wherein the first configuration information is obtained by the access point device when an object exists within the coverage range of the trigger device, The steps include receiving second configuration information transmitted from the access point device and reducing or stopping the transmission of the sensing message according to the second configuration information, wherein the second configuration information is obtained by the access point device when no object exists within the coverage range of the trigger device, Wireless sensing method.

14. The wireless sensing method according to claim 13, wherein the trigger device that transmits a sensing message to the access point device includes a low-frequency trigger device and a high-frequency trigger device.

15. When applied to the aforementioned high-frequency trigger device, the access point device is configured to obtain the configuration information according to the channel determination result of the aforementioned high-frequency trigger device. The wireless sensing method according to claim 14, which, when applied to the low-frequency trigger device, is configured to determine whether or not to adjust the operating state of the low-frequency trigger device to transmit the sensing message according to the channel determination result of the remaining high-frequency trigger devices, and if YES, to obtain the configuration information according to the channel determination result of the low-frequency trigger device.

16. The wireless sensing method according to claim 15, wherein the access point device is further configured to determine whether to adjust the operating state of the low-frequency trigger device to transmit the sensing message if the channel determination result of all the high-frequency trigger devices indicates that no object exists within the coverage range, and whether to determine whether to adjust the operating state of the low-frequency trigger device to transmit the sensing message if the channel determination result of the high-frequency trigger device indicates that an object exists within the coverage range, or whether to adjust the operating state of the low-frequency trigger device to transmit the sensing message depending on the number of high-frequency trigger devices in which an object exists within the coverage range.

17. Before the step of sending a sensing message to the access point device, The method further includes receiving initial configuration information transmitted from the access point device and configuring the operating frequency band to a first operating frequency band according to the initial configuration information, The step of receiving the first configuration information transmitted from the access point device is: The wireless sensing method according to claim 14, comprising the step of receiving first configuration information transmitted from the access point device and raising the operating frequency band from the first operating frequency band to the second operating frequency band according to the first configuration information.

18. The wireless sensing method according to claim 14, wherein if an object exists within the coverage range of the trigger device, the access point device can further obtain third configuration information, and the access point device is configured to either increase the power to transmit communication information to the trigger device in which the object exists within the coverage range, or to decrease the extended distributed channel access parameters according to the third configuration information.

19. The step of sending a sensing message to the access point device is: A step of receiving a timestamp transmitted from the access point device, wherein the timestamp corresponds one-to-one with the trigger device. The wireless sensing method according to claim 14, comprising the step of transmitting the sensing message to the access point device in accordance with the timestamp.

20. The trigger device is either a low-frequency trigger device or a high-frequency trigger device, and the access point device is connected to a plurality of the low-frequency trigger devices and the high-frequency trigger devices, respectively. If the trigger device is the high-frequency trigger device, the timestamp is obtained by the access point device according to the number of the multiple low-frequency trigger devices and the high-frequency trigger device, the number of the high-frequency trigger device, and the time period during which the high-frequency trigger device transmits the sensing message at intervals. The wireless sensing method according to claim 19, wherein the trigger device is the low-frequency trigger device, and the timestamp is obtained by the access point device in accordance with the number of devices, the number of the low-frequency trigger device, the timestamp of the high-frequency trigger device with a last digit connected to the access point device, and the time period during which the low-frequency trigger device transmits the sensing message at intervals.

21. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor executes the computer program to realize the wireless sensing method according to any one of claims 1 to 20.

22. A computer-readable storage medium having a program stored in it, wherein when the program is executed by a processor, the wireless sensing method according to any one of claims 1 to 20 is realized.

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