Signal processing method, device, equipment and storage medium

Abstract

The present invention discloses a signal processing method, apparatus, device, and storage medium. The method is applied to a process initiating device and includes the following steps: when executing a wireless security perception process, sending a trigger frame to a connected process participating device, the trigger frame including a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier; receiving response information returned by the process participating device after executing a process operation corresponding to the process control identifier, the response information being a feedback signal sent by the process participating device after determining that the process operation matches the perception parameter when executing the process operation, the feedback signal including a measurement signal, measurement feedback on the measurement signal, or feedback on whether the wireless security perception measurement can be performed. The present invention can solve the problem of low wireless perception efficiency caused by chaotic measurement management and control of wireless security perception services in the prior art.

Description

Technical Field

[0001] The present invention belongs to the field of wireless measurement and control technology, and in particular relates to a signal processing method, device, equipment and storage medium. Background Art

[0002] Wi-Fi sensing technology can leverage existing Wi-Fi networks and devices to implement functions such as motion detection, gesture recognition, and biometric measurement. The wireless sensing process requires the participation of multiple devices. These devices participate in multiple stages, each of which involves one or more interactions. However, the management and control of the entire wireless sensing process, particularly wireless security sensing service measurements, is currently disorganized, resulting in low wireless sensing efficiency. Summary of the Invention

[0003] The embodiments of the present invention provide a signal processing method, apparatus, device and storage medium, which can solve the problem in the prior art of chaotic measurement management and control of wireless security perception services, resulting in low wireless perception efficiency.

[0004] In a first aspect, a signal processing method is provided, which is applied to a process initiating device and includes:

[0005] When executing the wireless security perception process, a trigger frame is sent to the connected process participating device, the trigger frame including the process control identifier of the wireless security perception process and the perception parameter corresponding to the process control identifier;

[0006] Receive response information returned by the process participating device after executing the process operation corresponding to the process control identifier. The response information is a feedback signal sent by the process participating device after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed.

[0007] Optionally, the process control identifier includes a first process control identifier, and the process operation corresponding to the first process control identifier is used to poll and obtain a process participating device capable of performing wireless security awareness measurement;

[0008] The perception parameters include frame type parameters, device connection identifiers, and security parameters;

[0009] The conditions for matching process participating devices with perception parameters include:

[0010] The frame type parameter indicates that the trigger frame is a perception trigger frame;

[0011] The device connection identifier is matched with the device participating in the process;

[0012] The device initiating the security parameter characterization process supports wireless security perception measurement;

[0013] And, the process participates in matching the sensing measurement environment corresponding to the sensing parameters.

[0014] Optionally, the perception parameters also include:

[0015] At least one of the number of repeated transmissions of the null data packet (NDP), the NDP transmission power, and the received signal strength indicator (RSSI) at which the NDP reaches the target;

[0016] Safety parameters include:

[0017] The secure long training field LTF counter and the LTF generation sequence authentication code SAC are used to generate an encrypted NDP frame.

[0018] Optionally, the process control identifier includes a second process control identifier, and the process operation corresponding to the second process control identifier is used to request to start a perception detection signal sending process, or to request a process participating device to reply to a perception measurement report;

[0019] The perception parameters include frame type parameters and device connection identifier;

[0020] The conditions for matching process participating devices with perception parameters include:

[0021] The frame type parameter indicates that the trigger frame is a perception trigger frame;

[0022] The device connection identifier is matched with the device participating in the process.

[0023] Optionally, when the process operation corresponding to the second process control identifier is used to request to start the perception detection signal sending process, the process initiating device is the detection signal receiving end, and the process participating device is the detection signal sending end;

[0024] After receiving the response information returned by the process participating device after executing the process operation corresponding to the process control identifier, the method further includes:

[0025] The encrypted NDP frame sent by the receiving process participating device after starting the process of sending the perception detection signal;

[0026] Wireless security awareness measurements are performed on process participating devices based on encrypted NDP frames.

[0027] Optionally, after performing wireless security awareness measurement on the process participating devices according to the encrypted NDP frame, the method further includes:

[0028] After completing the wireless security awareness measurement, a teardown message is sent to enable the process participating devices to stop sending encrypted NDP frames according to the teardown message.

[0029] Optionally, when the process operation corresponding to the second process control identifier is used to request the process participating device to reply to the perception measurement report, the process initiating device is the measurement signal sending end, and the process participating device is the measurement signal receiving end;

[0030] The conditions for matching process participating devices with perception parameters also include:

[0031] The process participating device has completed the perception measurement report when receiving the trigger frame.

[0032] Optionally, before sending the trigger frame to the connected process participating device, the method further includes:

[0033] An empty data packet is sent to announce the NDPA frame to the process participating device. The NDPA frame includes a measurement information class that the process participating device is required to feedback. After the process participating device determines that it matches the NDPA frame, it receives the encrypted NDP frame and performs wireless security awareness measurements on the sender based on the measurement information class.

[0034] Optionally, before sending the trigger frame to the connected process participating device, the method further includes:

[0035] Broadcast beacon message, which includes wireless sensing capability indication parameters;

[0036] When receiving an association request sent by a process participating device after determining that there is a corresponding wireless perception capability indication parameter, if it is determined according to the association request that the process participating device has wireless perception capability, an association response message is returned to the process participating device to connect with the process participating device.

[0037] Optionally, after connecting to the process participating device and before sending the trigger frame to the connected process participating device, the method further includes:

[0038] Sending a perception establishment request to the process participating device, where the perception establishment request is used to perform perception negotiation with the process participating device;

[0039] When the perception establishment response returned by the process participating device is received, the perception negotiation with the process participating device is completed.

[0040] In a second aspect, a signal processing method is provided, which is applied to a process participating device and includes:

[0041] When executing the wireless security perception process, receiving a trigger frame sent by a connected process initiating device, the trigger frame including a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier;

[0042] Execute the process operation corresponding to the process control identifier, and return response information to the process initiating device after the process operation is completed. The response information is a feedback signal sent after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed.

[0043] According to a third aspect, a signal processing device is provided, the signal processing device comprising:

[0044] A sending module, configured to send a trigger frame to a connected process participating device when executing a wireless security perception process, wherein the trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier;

[0045] A receiving module, configured to receive response information returned by a process participating device after executing a process operation corresponding to a process control identifier, wherein the response information is a feedback signal sent by the process participating device after determining that the process operation matches the perception parameter when executing the process operation, and the feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether the wireless security perception measurement can be performed;

[0046] or,

[0047] A receiving module, configured to receive a trigger frame sent by a connected process initiating device when executing a wireless security perception process, the trigger frame including a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier;

[0048] An execution module is used to execute the process operation corresponding to the process control identifier and return response information to the process initiating device after the process operation is completed. The response information is a feedback signal sent after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether the wireless security perception measurement can be performed.

[0049] In a fourth aspect, a signal processing device is provided, which includes a memory, a processor, and a signal processing program stored in the memory and running on the processor, wherein the signal processing program executes the signal processing method of the first aspect or the second aspect.

[0050] In a fifth aspect, a computer storage medium is provided, which, when executed by a processor, implements the signal processing method of the first aspect or the second aspect.

[0051] Compared with the prior art, the signal processing method, apparatus, device and storage medium provided in the embodiments of the present application send a trigger frame to the process participating device during the execution of the wireless security perception process, and the trigger frame includes the process control identifier of the wireless security perception process and the perception parameters corresponding to the process control identifier. Therefore, the process participating device can execute the process operation corresponding to the process control identifier according to the perception parameters, and the execution management of the process participating device in each process link is realized with the help of the trigger frame, and the management and control capabilities of the wireless security perception measurement service are improved, which solves the problem of chaotic measurement management and control of wireless security perception service in the prior art, resulting in low wireless perception efficiency, and enables the device to have the ability to execute multiple wireless security perception processes at the same time, thereby improving the efficiency of wireless perception and expanding the application scenarios of wireless perception. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0053] Figure 1 is a schematic flowchart of a signal processing method according to an embodiment of the present invention.

[0054] Figure 2 is a schematic flowchart of a signal processing method according to another embodiment of the present invention.

[0055] Figure 3 is a schematic flowchart of a signal processing method according to another embodiment of the present invention.

[0056] Figure 4 is a schematic block diagram of a signal processing device according to an embodiment of the present invention.

[0057] Figure 5 is a schematic block diagram of a signal processing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0059] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

[0060] Wi-Fi Sensing is a new technology that uses existing Wi-Fi networks and the Wi-Fi signals emitted by devices within them to detect motion, recognize gestures, and measure biometrics. This technology uses CSI (Channel State Information) or radar to detect changes in the environment caused by the movement of objects, pets, and people, eliminating the need for the subject to wear any equipment.

[0061] Precisely because there is no requirement for the detected object to wear it, it provides more intelligent and richer applications for the implementation of wireless sensing technology in smart homes, intrusion detection, healthcare, and smart remote care.

[0062] The execution of the wireless awareness process requires the participation of multiple devices. The initiator of the wireless awareness process is the process initiator, also known as the Initiator STA, or ISTA for short. Other participants in the wireless awareness process are the Responder STAs, or RSTAs for short.

[0063] The distinction between process initiators and process participants is based on whether they are the process initiators. When it comes to signal measurement in the wireless sensing process, devices in the wireless sensing process can be further divided into transmitters and receivers. Transmitters send sensing signals within the wireless sensing process and are also referred to as transmitters or senders. Receivers receive sensing signals within the wireless sensing process and are also referred to as receivers.

[0064] Specifically, the process initiating device can send a measurement signal, and the process participating devices receive the measurement signal and generate a perception measurement report based on the measurement signal. In this case, the process initiating device acts as the measurement signal transmitter, and the process participating devices act as the measurement signal receiver.

[0065] Alternatively, the process initiating device may receive the detection signal sent by the process participating device. In this case, the process initiating device serves as the detection signal receiving end, and the process participating device serves as the detection signal sending end.

[0066] It's important to note that when these devices participate in the wireless sensing process, they engage in multiple processes, including capability exchange, negotiation, measurement, and measurement report acquisition. Each process involves at least one interaction. Current wireless sensing processes, particularly wireless security sensing and service measurement, are often poorly managed and controlled, resulting in low wireless sensing efficiency.

[0067] In order to solve the above problems, the present invention provides a signal processing method. Figure 1 In one embodiment, the method is applied to a process initiating device and includes the following steps:

[0068] Step S110: When executing the wireless security awareness process, a trigger frame is sent to the connected process participating device, where the trigger frame includes a process control identifier of the wireless security awareness process and a perception parameter corresponding to the process control identifier;

[0069] Step S120, receiving the response information returned by the process participating device after executing the process operation corresponding to the process control identifier. The response information is a feedback signal sent by the process participating device after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed.

[0070] The wireless security awareness process described above utilizes wireless awareness technology to securely transmit encrypted signals over the air interface. It should be understood that devices capable of executing the wireless security awareness process support both wireless awareness and air interface encryption measurements. The process-initiating and process-participating devices can exchange capabilities upon connection, thereby detecting whether both parties support wireless security awareness measurements.

[0071] The trigger frame described above is originally used in the wireless awareness negotiation process in the prior art. When there are multiple participating devices in a process, a single signaling message is sent via the trigger frame, thereby reducing the significant signaling overhead associated with the negotiation process involving multiple responding devices. In this embodiment, the trigger frame is sent by the process initiating device to control and manage the wireless security awareness process.

[0072] In this embodiment, the trigger frame includes a process control identifier and a perception parameter of the wireless security awareness process. The process control identifier is a label that controls which specific process operation in the wireless security awareness process the process-participating device performs. Each process control identifier corresponds to a process operation in the wireless security awareness process.

[0073] The process control identifier may be a field in the trigger frame. In one example, the process control identifier may be a subtype of the trigger frame, and different subtypes correspond to different process operations.

[0074] For example, if the trigger frame subtype is POLL (i.e., the process control identifier is POLL), this trigger frame is used to request the process participating device to perform a polling operation. If the trigger frame subtype is Solicit Feedback, this trigger frame is used to request the process participating device to return a sensing measurement report. If the trigger frame subtype is Sensing Sounding, this trigger frame is used to request the process participating device to send a sensing detection signal.

[0075] The above-mentioned perception parameters correspond to the process control identifier. The specific content contained in the perception parameters is related to the process operation requested to be executed by the corresponding process control identifier, and may include all parameters required to execute the process operation.

[0076] In one optional example, the perception parameters may include public information and user information. Public information may be related to the process operation requested by the trigger frame and / or parameters related to the transmission of the trigger frame itself, such as a frame type parameter. User information corresponds to the trigger frame recipient target intended by the process initiating device. For example, if the process initiating device intends to request device A and device B to perform a process operation, the user information should include the user information of device A and device B.

[0077] Optionally, the user information may include parameters related to connection, encrypted signal transmission, and perception measurement between the trigger frame receiving target and the trigger frame receiving target (process participating device). The user information may also include parameters related to wireless security perception measurement, such as the number of repetitions of sequence symbols in the encrypted signal, the transmit power for security perception measurement, an indication of the signal strength at the target, and security parameters. The encrypted signal may be an encrypted NDP (Null Data Packet) frame.

[0078] It is understandable that, for different process participating devices, when the process initiating device requests and controls them to perform the same process operation, their public information can be set to be consistent, as long as the user information matches the different process participating devices.

[0079] It should also be noted that, based on the different configurations of the aforementioned user information, the process initiating device can send trigger frames to a single or multiple process parameter devices simultaneously. Furthermore, the process initiating device can also initiate multiple trigger frames simultaneously, with different process control identifiers for each trigger frame, thereby enabling the device to execute multiple perception processes simultaneously.

[0080] In this embodiment, after receiving a trigger frame, a process participating device executes the process operation corresponding to the process control identifier based on the perception parameters in the trigger frame. During the execution of the process operation, if the process participating device determines that the perception parameters match, it returns a response message to the process participating device. This enables the process initiating device to control, manage, and provide feedback on the process operation executed by the process participating device.

[0081] It's important to note that a response message is a feedback signal sent by a participating device after confirming a match with the perception parameters. It can refer to a measurement signal, feedback on a measurement signal, or feedback on whether wireless security perception measurements can be performed. An example analysis combining the content of the feedback signal and the perception parameter matching process will be provided later.

[0082] In an optional example, the response information may be a response message, such as an Ack (acknowledgement) message or a CTS (clear to send) message.

[0083] It should also be noted that if a process participating device does not match the perception parameters, no response information will be returned, meaning no reply will be made. If the process initiating device does not receive a response within a preset time after sending a trigger frame, the process participating device that did not return a response message is deemed unable to execute the process operation. Alternatively, in other examples, a message prohibiting the process from being sent can be returned to the process initiating device.

[0084] The signal processing method involved in this embodiment sends a trigger frame to a process-participating device during the execution of a wireless security perception process. The trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier. This enables the process-participating device to execute the process operation corresponding to the process control identifier based on the perception parameter. The trigger frame enables execution management of the process-participating device at each process link, improving the management and control capabilities of wireless security perception measurement services. This addresses the issue of chaotic measurement management and control of wireless security perception services in the prior art, which leads to low wireless perception efficiency. This enables the device to simultaneously execute multiple wireless security perception processes, improving wireless perception efficiency and expanding the application scenarios of wireless perception.

[0085] In another optional example, the process control identifier includes a first process control identifier, and the process operation corresponding to the first process control identifier is used to poll for process participating devices capable of performing wireless security awareness measurements. In this case, the awareness parameters include the frame type parameter in the public information and the device connection identifier and security parameters in the user information.

[0086] It should be noted that in this example, the process initiating device can be either the measurement signal transmitter or the detection signal receiver. The process initiating device sends a trigger frame including the first process control identifier after connecting with a process participating device and completing negotiation. This trigger frame is used to screen all connected process participating devices for devices capable of performing wireless security awareness measurements. The ability to perform wireless security awareness measurements is determined based on the specific measurement content and / or measurement environment.

[0087] Among them, the screening conditions involved in the screening process are the conditions for matching the process participating devices with the perception parameters. The conditions may include: the frame type parameter characterizing that the trigger frame is a perception trigger frame; the device connection identifier matches the process participating device; the security parameter characterizing that the process initiating device supports wireless security perception measurement; and the process participating device matches the perception measurement environment corresponding to the perception parameters.

[0088] The security parameters may include at least one of the following parameters: a security measurement identifier, a signaling length, a security LTF (Long-training Field) counter, and an LTF generation SAC (Sequence Authentication Code).

[0089] Regarding the security parameters in the matching conditions, if the process initiating device supports and has enabled wireless security awareness, the security parameters in the trigger frame sent by the process initiating device will be set. This set security parameter can be a security measurement flag. When a process participating device receives the trigger frame and performs a match, the set security parameter indicates that the process initiating device supports wireless security awareness measurement. Conversely, if the security parameter is set, it indicates that the process initiating device does not support wireless security awareness measurement. In this case, the process participating device does not match the awareness parameter and the screening condition is rejected.

[0090] The secure LTF counter in the security parameters can determine the random number used to generate the LTF sequence. The random number and the LTF generation SAC determine the LTF sequence. Together, they indicate how to generate the encrypted signal, that is, the encrypted NDP frame.

[0091] Regarding the matching of the process participating devices in the screening conditions with the perception measurement environment corresponding to the perception parameters, this embodiment uses the encrypted signal as an encrypted NDP frame, and describes how the wireless security perception measurement is used to measure the user's heart rate.

[0092] The process initiating device can determine the signal transmission range of the encrypted NDP frame based on the accuracy of the heart rate measurement, and then obtain the NDP transmission power and / or NDP arrival target RSSI (Received Signal Strength Indication) in the perception parameters based on the signal transmission range. Among them, the NDP arrival target RSSI can be used to screen out process participating devices in areas with weak signals, such as the corners of a room.

[0093] If the transmit power of a device receiving a trigger frame falls outside the NDP transmit power range of an encrypted NDP frame, the signal accuracy of the device is insufficient for heart rate measurement and the device can be excluded. Otherwise, the signal from the device is valuable for obtaining the heart rate and the device can be excluded for wireless security awareness measurement.

[0094] It should also be noted that for detection of other scenarios such as human position detection, the transmission power range and / or NDP reaching the target RSSI can be set accordingly to screen out suitable process participating devices that match the perception measurement environment corresponding to the perception parameters.

[0095] A detailed description is given by taking the process initiating device ISTA as an example, in which the process initiating device ISTA sends a trigger frame including a first process control identifier to RSTA1, RSTA2, RSTA3 and RSTA4.

[0096] The trigger frame includes two parameters: Common Info and User Info. User Info has four items, User Info1 to User Info4, corresponding to RSTA1 to RSTA4, respectively.

[0097] Common info includes the Type of the Trigger frame (frame type parameter) and Triggerdependent common info (common information corresponding to the frame type parameter). Triggerdependent commoninfo can include the trigger frame subtype.

[0098] For example, when Type is Sensing, where Sensing indicates that the current trigger frame is a sensing trigger frame, the trigger frame subtype contained in the Triggerdependent common info is Sensing trigger subtype. The Sensing trigger subtype is set to POLL, indicating that the process operation corresponding to the current sensing trigger frame is used for polling, and the parameter content POLL of the Sensing trigger subtype is the first process control identifier of the trigger frame.

[0099] User info includes parameters AID, REP, NDP Tx Power (NDP transmit power), NDP Target RSSI (NDP target RSSI) and Secure LTF Parameters (security parameters).

[0100] The parameter AID is the connection identifier of the STA. In User info 1 to User info 4, AID can be set to the connection identifiers of RSTA1 to RSTA4 respectively.

[0101] The parameter REP represents the number of repetitions of the NDP sequence symbol, which can indicate the number of repetitions of the sequence symbol when the encrypted NDP frame is transmitted. By sending the encrypted NDP frame multiple times, the accuracy of the wireless security perception measurement is improved.

[0102] The parameter NDP Tx Power indicates the transmit power of the encrypted NDP frame. The NDP Tx Power can be determined by setting the transmit power range of the RSTA.

[0103] The NDP Target RSSI parameter indicates the target RSSI for the encrypted NDP frame. This parameter sets a signal strength requirement for participating devices and excludes devices whose signal transmission strength does not meet the requirement.

[0104] The parameter Secure LTF Parameters indicates whether the process participating device has enabled and supports wireless security awareness measurement. Only the process initiating device that has enabled and supports it will set the Secure LTF Parameters in the User Info field. Otherwise, the Secure LTF Parameters field is not carried.

[0105] Assume that RSTA1 and RSTA2 receive a Trigger frame in which the Type is Sensing, the AID corresponds to the connection identifier of RSTA1 and RSTA2, and the Secure LTF Parameters are set. In addition, based on the NDP TxPower, NDP Target RSSI, and the RSTA's own situation, RSTA1 and RSTA2 determine that the sensing measurement environment corresponding to the sensing parameters in the trigger frame matches. RSTA1 and RSTA2 can then send a response message to ISTA.

[0106] Among them, according to the NDP Tx Power, NDP Target RSSI and the RSTA itself, determining that RSTA1 / RSTA2 matches the perception measurement environment corresponding to the perception parameters in the trigger frame can correspond to: NDP Tx Power is within the transmission power range of RSTA1 / RSTA2, RSTA1 / RSTA2 is turned on and supports wireless security perception measurement, and the signal transmission strength of RSTA1 / RSTA2 meets the NDP Target RSSI.

[0107] Assume that RSTA3 and RSTA4 receive a Trigger frame with Type set to Sensing and the AID corresponding to the connection identifiers of RSTA3 and RSTA4. However, the NDP Tx Power is not within the transmit power range of RSTA3 and RSTA4 does not support wireless security sensing. In this case, neither RSTA3 nor RSTA4 sends a response message to ISTA.

[0108] This embodiment implements the execution and management of the screening process of the process-participating devices before the wireless sensing device is measured, thereby improving the management and control capabilities of the wireless security sensing measurement service.

[0109] In another optional example of the present application, the process control identifier includes a second process control identifier, and the process operation corresponding to the second process control identifier is used to request the start of the perception detection signal sending process, or to request the process participating device to reply to the perception measurement report.

[0110] In this example, the process initiating device sends a trigger frame containing the second process control identifier after connecting with the process participating devices, completing negotiation, and screening the participating devices. This process operation, based on the different roles played by the process participating devices and the process initiating device in the wireless awareness measurement, ultimately implements wireless security awareness measurement and generates a measurement report.

[0111] It should be noted that before performing a measurement or ultimately obtaining a measurement report as the measurement signal transmitter, the process of matching the participating device with the perception parameters executed can include the frame type parameter in the public information and the device connection identifier in the user information. Matching conditions may include: the frame type parameter indicating that the trigger frame is a perception trigger frame; and the device connection identifier matches the participating device.

[0112] When the process operation is used to request the start of the perception detection signal sending process, the process initiating device is the detection signal receiving end, and the process participating device is the detection signal sending end. The process participating device sends an encrypted NDP frame, and the process initiating device performs wireless security perception measurement on the encrypted NDP frame to obtain a measurement report.

[0113] When a process operation is used to request a process-participating device to reply with a perception measurement report, the process-initiating device acts as the measurement signal transmitter, and the process-participating device acts as the measurement signal receiver. Specifically, the process-initiating device sends an encrypted NDP frame, and the process-participating device performs wireless security perception measurements on the encrypted NDP frame. After receiving the measurement report, the process-participating device replies to the process-initiating device.

[0114] It should also be noted that when a process participating device responds to a perception measurement report, the condition for the process participating device to match the perception parameters may also include: the process participating device has completed the perception measurement report when receiving the trigger frame. By adding the condition that the process participating device has completed the perception measurement report, the time required to obtain the wireless perception measurement report can be shortened.

[0115] The following description will continue with the example of the process initiator ISTA sending a trigger frame to RSTA1 to RSTA4.

[0116] When a process operation is used to request the initiation of the perception probe signal transmission process, the process initiating device ISTA becomes the probe signal receiver. If the process initiating device receives response information from RSTA1 and RSTA2, RSTA1 and RSTA2 become probe signal transmitters. The process initiating device ISTA can send trigger frames containing the second process control identifier to RSTA1 and RSTA2 in a predetermined order, such as sequential or reverse order, to cause the selected RSTA1 and RSTA2 to sequentially initiate the perception probe signal transmission process and transmit encrypted perception probe signals, namely, encrypted NDP frames.

[0117] Taking the sequential transmission of trigger frames including the second process control identifier as an example, ISTA sends a Trigger frame to RSTA1. The Trigger frame includes Common Info and User Info 1. In addition, the second process control identifier included in the Trigger frame is represented by the Sensing trigger subtype, and its corresponding field is Sensing sounding, indicating that the process operation corresponding to the Trigger frame is used to request the corresponding STA to send a sensing detection signal.

[0118] If the parameter AID of User info 1 includes the connection identifier of RSTA1, Common info records that the type of Triggerframe is a perception trigger frame, and RSTA1 can currently execute the perception detection signal sending process, then a response message is sent to ISTA. The response message is used to instruct ISTA that RSTA1 can start the perception detection signal sending process.

[0119] After returning a response message with a preset short interframe interval, RSTA1 sends an encrypted NDP frame to ISTA, referencing the negotiated parameters. Upon receiving the response message, ISTA then receives the encrypted NDP frame sent by the participating device after initiating the sensing probe signal transmission process. Based on the encrypted NDP frame, ISTA performs wireless security sensing measurements on the participating devices.

[0120] The process of ISTA sending a trigger frame including the second process control identifier to RSTA2 to perform wireless security awareness measurement can also be performed with reference to the above, which will not be repeated here.

[0121] It should also be noted that after ISTA completes the perception measurement of all screened RSTAs, it can send a Teardown message through the air interface to enable the process participating devices to stop sending encrypted NDP frames according to the Teardown message, thereby closing the wireless security perception measurement.

[0122] In another example, when the process operation is used to request the process participating devices to reply with a perception measurement report, the process initiating device ISTA is the sender. If the process initiating device receives response information returned by RSTA1 and RSTA2, RSTA1 and RSTA2 are the receivers.

[0123] After receiving the trigger frame response (response information) from RSTA1 and RSTA2, ISTA can send an NDPA (Null Data Packet Announcement) frame to RSTA. The NDPA frame can be used to broadcast the specific content of the perception measurement report required to be replied by each RSTA after measurement in this measurement cycle, which includes at least the content of the following Table 1.

[0124] parameter illustrate Frame Control Frame format Duration cycle RA Receiving device address TA Sending device address Beamformer Dialog token Used for beamformer to identify NDPA frames RSTA info1 RSTA1 feedback information RSTA info2 RSTA2 feedback information FCS MAC Frame Check Sequence

[0125] Table 1

[0126] The RSTA info n (n=1, 2, ...) information element in Table 1 indicates the measurement information type that RSTA1 and RSTA2, participating in the wireless security awareness measurement, need to report in the awareness measurement report. After RSTA1 intercepts the NDPA frame, if the NDPA frame's fields include RSTA1's address, it confirms that RSTA1 matches the NDPA frame. RSTA1 can receive the encrypted NDP frame sent by ISTA after a preset short interframe interval and perform awareness measurements. RSTA then generates an awareness measurement report based on the measurement information type.

[0127] It can be understood that, in this example, RSTA performs wireless security perception measurement on the encrypted NDP frame sent by ISTA, and ISTA uses a trigger frame including a second process control identifier to request RSTA to return a perception measurement report.

[0128] The matching conditions set by ISTA to request RSTA1 and RSTA2 to return a perception measurement report are essentially the same as the process for initiating the perception probe signal transmission process described above. The main difference is that when requesting a perception measurement report, the "sensing trigger subtype" parameter is "Solicit feedback." This parameter indicates the process operation to be executed in response to the trigger frame requesting the RSTA to reply to the perception measurement report. If RSTA1 and RSTA2 have completed wireless security perception measurements and obtained a perception measurement report, they can return the perception measurement report to ISTA as a response.

[0129] See also Figure 2 Based on the above embodiment, in another embodiment of the present application, the method includes:

[0130] Step S210: When executing the wireless security awareness process, broadcast a beacon message, where the beacon message includes a wireless awareness capability indication parameter;

[0131] Step S220 , upon receiving an association request sent by the process participating device after determining the presence of the corresponding wireless sensing capability indication parameter, if it is determined according to the association request that the process participating device has wireless sensing capability, returning an association response message to the process participating device to connect with the process participating device;

[0132] Step S230: Send a perception establishment request to the process participating device, where the perception establishment request is used to perform perception negotiation with the process participating device;

[0133] Step S240: When the perception establishment response returned by the process participating device is received, the perception negotiation with the process participating device is completed;

[0134] Step S250: Send a trigger frame to the connected process participating device, where the trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier;

[0135] Step S260, receiving the response information returned by the process participating device after executing the process operation corresponding to the process control identifier. The response information is a feedback signal sent by the process participating device after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed.

[0136] The main difference between this embodiment and the previous embodiment is that this embodiment adds the device connection, capability exchange and negotiation process between devices participating in wireless security awareness.

[0137] It should be noted that if the process initiator / process participant device supports and has enabled wireless sensing, the device's local parameter dot11SensingOptionImplemented is set to true. If it supports air interface security measurements, the device's local parameter dot11SecueLTFImplemented is set to true. Setting these two local parameters indicates that the process initiator / process participant device supports and has enabled wireless sensing, as well as air interface security measurements.

[0138] When a process initiator requests a connection with a process participant, the process initiator can add the ISTA-SensingCapability parameter to the beacon message based on the state of the aforementioned local parameters. This parameter indicates wireless sensing capability. When both of the aforementioned local parameters are true, the beacon message carries this parameter, indicating that the process initiator supports wireless sensing and air interface encryption.

[0139] The participating device receives the broadcast beacon message and reads the parameter ISTA-SensingCapability. If the local parameters dot11Sensing-OptionImplemented and dot11SecueLTFImplemented on the participating device are both true, that is, if the participating device also has the corresponding wireless sensing capability indicator parameter RSTA-SensingCapability, the participating device sends an AssociationRequest to the initiating device.

[0140] The Association request may carry the wireless sensing capability indication parameter RSTA-SensingCapability corresponding to the process participating device, so as to indicate to the process initiating device that the process participating device supports wireless sensing and air interface encryption.

[0141] The process initiating device receives the association request and, when confirming that the association request includes the RSTA-SensingCapability parameter, that is, determining based on the association request that the process participating device has wireless sensing capability, can return an association response (association response message) to the process participating device, thereby realizing the connection and capability exchange between the process participating device and the process initiating device.

[0142] When the process initiating device needs to perform wireless security sensing services, service negotiation is required. The process initiating device can send a sensing setup request to the process participating device. The sensing setup request message is used to perform sensing negotiation with the process participating device. The content of the sensing setup request message can be detailed in Table 2 below.

[0143]

[0144] Table 2

[0145] When the Sensing role is Transmitter, it indicates that the process initiator is requested to act as the transmitter in the sensing establishment request, and the process participating devices are the receivers. When the Sensing role is Receiver, it indicates that the process initiator is requested to act as the receiver in the sensing establishment request, and the process participating devices are the transmitters.

[0146] The above-mentioned sensing measurement profile may include measurement period, measurement duration, frequency band, bandwidth, antenna configuration information, supported transmit power range, etc.

[0147] If the process participating devices agree to execute the wireless awareness process, an awareness establishment response is returned to the process initiating device. The awareness establishment response may indicate agreement to execute wireless security awareness, thereby completing the negotiation.

[0148] This embodiment provides a full-process implementation of wireless security awareness by adding devices involved in wireless security awareness, device connection, capability exchange and negotiation processes, and implements wireless security awareness service measurement through a combination of trigger frames and broadcasts.

[0149] In yet another alternative example, see Figure 3 When the signal processing method is applied to a process participating device, the following steps may be included:

[0150] Step S310: When executing the wireless security awareness process, a trigger frame sent by a connected process initiating device is received, where the trigger frame includes a process control identifier of the wireless security awareness process and a perception parameter corresponding to the process control identifier;

[0151] Step S320, execute the process operation corresponding to the process control identifier, and return response information to the process initiating device after the process operation is completed. The response information is a feedback signal sent after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed.

[0152] The signal processing method involved in this embodiment receives a trigger frame sent by a process initiating device during the execution of a wireless security perception process, and the trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier. Therefore, the process participating devices can execute the process operation corresponding to the process control identifier according to the perception parameter. The process initiating device uses the trigger frame to implement execution management of the process participating devices in each process link, thereby improving the management and control capabilities of the wireless security perception measurement service. This solves the problem of chaotic measurement management and control of wireless security perception services in the prior art, which leads to low wireless perception efficiency. The device is capable of executing multiple wireless security perception processes simultaneously, thereby improving the efficiency of wireless perception and expanding the application scenarios of wireless perception.

[0153] Combined with the above Figures 1 to 3 , describes in detail the signal processing method of the embodiment of the present invention, and will be combined with Figure 4 , a signal processing device according to an embodiment of the present invention is described in detail.

[0154] See also Figure 4 , the signal processing device comprises:

[0155] The sending module 410 is configured to send a trigger frame to a connected process participating device when executing the wireless security perception process, wherein the trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier;

[0156] The receiving module 420 is used to receive the response information returned by the process participating device after executing the process operation corresponding to the process control identifier. The response information is a feedback signal sent by the process participating device after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether the wireless security perception measurement can be performed.

[0157] In another optional example, the process control identifier includes a first process control identifier, and the process operation corresponding to the first process control identifier is used to poll and obtain a process participating device capable of performing wireless security awareness measurement;

[0158] The perception parameters include frame type parameters, device connection identifiers, and security parameters;

[0159] The conditions for matching the signal processing device with the perception parameters include:

[0160] The frame type parameter indicates that the trigger frame is a perception trigger frame;

[0161] The device connection identifier is matched with the device participating in the process;

[0162] The device initiating the security parameter characterization process supports wireless security perception measurement;

[0163] And, the process participates in matching the sensing measurement environment corresponding to the sensing parameters.

[0164] In yet another optional example, the perception parameter further includes:

[0165] At least one of the number of repeated transmissions of the null data packet (NDP), the NDP transmission power, and the received signal strength indicator (RSSI) at which the NDP reaches the target;

[0166] Safety parameters include:

[0167] The secure long training field LTF counter and the LTF generation sequence authentication code SAC are used to generate an encrypted NDP frame.

[0168] In yet another optional example, the process control identifier includes a second process control identifier, and the process operation corresponding to the second process control identifier is used to request to start a perception detection signal sending process, or to request a process participating device to reply to a perception measurement report;

[0169] The perception parameters include frame type parameters and device connection identifier;

[0170] The conditions for matching the signal processing device with the perception parameters include:

[0171] The frame type parameter indicates that the trigger frame is a perception trigger frame;

[0172] The device connection identifier is matched with the device participating in the process.

[0173] In yet another optional example, when the process operation corresponding to the second process control identifier is used to request the start of the perception detection signal sending process, the signal processing device is the detection signal receiving end, and the process participating device is the detection signal sending end;

[0174] The signal processing device also includes a measurement module; wherein,

[0175] The receiving module is further used to receive the encrypted NDP frame sent by the process participating device after starting the perception detection signal sending process;

[0176] The measurement module is used to perform wireless security perception measurement on the process participating devices based on the encrypted NDP frame.

[0177] In yet another optional example, the sending module is further configured to send a teardown message after completing the wireless security awareness measurement, so that the process participating devices stop sending encrypted NDP frames according to the teardown message.

[0178] In yet another optional example, when the process operation corresponding to the second process control identifier is used to request the process participating device to reply to the perception measurement report, the signal processing device is the measurement signal sending end, and the process participating device is the measurement signal receiving end;

[0179] The conditions for matching the signal processing device with the perception parameters also include:

[0180] The process participating device has completed the perception measurement report when receiving the trigger frame.

[0181] In another optional example, the sending module is also used to send an empty data packet declaration NDPA frame to the process participating device. The NDPA frame includes a measurement information class that the process participating device is required to feedback, so that the process participating device can receive the encrypted NDP frame after determining that it matches the NDPA frame and perform wireless security perception measurement on the sending end based on the measurement information class.

[0182] In yet another optional example, the signal processing device further includes:

[0183] A broadcast module is used to broadcast beacon messages, where the beacon messages include wireless sensing capability indication parameters;

[0184] The return module is used to return an association response message to the process participating device when receiving an association request sent by the process participating device after determining the existence of the corresponding wireless perception capability indication parameter, if it is determined according to the association request that the process participating device has wireless perception capability, so as to connect with the process participating device.

[0185] In yet another optional example, the signal processing device further includes a negotiation module;

[0186] The negotiation module is also used to send a perception establishment request to the process participating device, and the perception establishment request is used to perform perception negotiation with the process participating device; when the perception establishment response returned by the process participating device is received, the perception negotiation with the process participating device is completed.

[0187] In an optional example, when the signal processing apparatus is a process participating device, the method includes:

[0188] The receiving module is used to receive a trigger frame sent by a connected process initiating device when executing a wireless security perception process. The trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier.

[0189] An execution module is used to execute the process operation corresponding to the process control identifier and return response information to the process initiating device after the process operation is completed. The response information is a feedback signal sent after determining that it matches the perception parameters when executing the process operation. The feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether the wireless security perception measurement can be performed.

[0190] Figure 5 FIG2 shows a hardware structure diagram of a signal processing device provided in an embodiment of the present application, wherein the signal processing device may include a processor 501 and a memory 502 storing computer program instructions.

[0191] Specifically, the processor 501 may include a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0192] The memory 502 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 502 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 502 may include removable or non-removable (or fixed) media. Where appropriate, the memory 502 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 502 is a non-volatile solid-state memory.

[0193] The memory 502 may include read-only memory (ROM), random access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical or other physical / tangible memory storage devices. Thus, generally, the memory 502 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to the above aspects of the present disclosure.

[0194] The processor 501 implements any one of the signal processing methods in the above embodiments by reading and executing computer program instructions stored in the memory 502 .

[0195] In one example, the signal processing device may further include a communication interface 503 and a bus 510. Figure 5 As shown, the processor 501, the memory 502, and the communication interface 503 are connected via a bus 510 and communicate with each other.

[0196] The communication interface 503 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0197] Bus 510 comprises hardware, software or both, couples the parts of signal processing equipment to each other.For example, and not limitation, bus can comprise accelerated graphics port (AGP) or other graphics bus, enhanced industry standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industry standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations.In suitable cases, bus 510 can comprise one or more buses.Although the present application embodiment describes and shows specific bus, the application considers any suitable bus or interconnection.

[0198] The signal processing device can be based on a signal processing method to achieve a combination of Figures 1 to 4 The signal processing method and device described.

[0199] In addition, in conjunction with the signal processing methods in the above embodiments, embodiments of the present application may provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the signal processing methods in the above embodiments is implemented.

[0200] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0201] It should be understood that in the embodiments of the present invention, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A; B can also be determined based on A and / or other information.

[0202] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A signal processing method, characterized in that: The method is applied to a process initiating device, and includes: When executing the wireless security perception process, sending a trigger frame to the connected process participating device, the trigger frame including the process control identifier of the wireless security perception process and the perception parameter corresponding to the process control identifier; Receiving response information returned by the process participating device after executing the process operation corresponding to the process control identifier, the response information being a feedback signal sent by the process participating device after determining a match with the perception parameter when executing the process operation, the feedback signal including a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed; Among them, when the process control identifier includes the first process control identifier, the perception parameters include frame type parameters, device connection identifier and security parameters; the perception parameters also include the number of repeated transmissions of empty data packets NDP, NDP transmission power and at least one of the NDP arrival target received signal strength indication RSSI; the process operation corresponding to the first process control identifier is used to poll to obtain the process participating device that can perform wireless security perception measurement.

2. The signal processing method according to claim 1, wherein: The conditions for the process participating device to match the perception parameter include: The frame type parameter indicates that the trigger frame is a perception trigger frame; The device connection identifier matches the process participating device; The security parameter indicates that the process initiating device supports wireless security awareness measurement; And, the process participating device matches the perception measurement environment corresponding to the perception parameter.

3. The signal processing method according to claim 1, wherein: The security parameters include: A secure long training field LTF counter and an LTF generation sequence authentication code SAC are used to generate an encrypted NDP frame.

4. The signal processing method according to claim 1, wherein: When the process control identifier includes a second process control identifier, and the process operation corresponding to the second process control identifier is used to request to start a perception detection signal sending process, or to request the process participating device to reply to a perception measurement report, the perception parameter includes a frame type parameter and a device connection identifier; The conditions for the process participating device to match the perception parameter include: The frame type parameter indicates that the trigger frame is a perception trigger frame; The device connection identifier matches the process participating device.

5. The signal processing method according to claim 4, characterized in that When the process operation corresponding to the second process control identifier is used to request to start the perception detection signal sending process, the process initiating device is the detection signal receiving end, and the process participating device is the detection signal sending end; After receiving the response information returned by the process participating device after executing the process operation corresponding to the process control identifier, the method further includes: Receiving an encrypted NDP frame sent by the process participating device after starting the perception detection signal sending process; Wireless security awareness measurement is performed on the process participating device according to the encrypted NDP frame. The signal processing method according to claim 5 , wherein: After performing wireless security awareness measurement on the process participating device according to the encrypted NDP frame, the method further includes: After completing the wireless security awareness measurement, a teardown message is sent to enable the process participating device to stop sending the encrypted NDP frame according to the teardown message.

7. The signal processing method according to claim 4, characterized in that: When the process operation corresponding to the second process control identifier is used to request the process participating device to reply to the perception measurement report, the process initiating device is a measurement signal sending end, and the process participating device is a measurement signal receiving end; The condition that the process participating device matches the perception parameter also includes: The process participating device has completed the perception measurement report when receiving the trigger frame.

8. The signal processing method according to claim 7, wherein: Before sending the trigger frame to the connected process participating device, the method further includes: Send an empty data packet announcement NDPA frame to the process participating device, where the NDPA frame includes a measurement information class that the process participating device is required to feedback, so that the process participating device receives the encrypted NDP frame after determining that it matches the NDPA frame and performs wireless security awareness measurement on the sending end based on the measurement information class.

9. The signal processing method according to claim 1, wherein: Before sending the trigger frame to the connected process participating device, the method further includes: Broadcasting a beacon message, wherein the beacon message includes a wireless sensing capability indication parameter; When receiving an association request sent by the process participating device after determining the existence of the corresponding wireless perception capability indication parameter, if it is determined according to the association request that the process participating device has wireless perception capability, an association response message is returned to the process participating device to connect with the process participating device.

10. The signal processing method according to claim 9, characterized in that: After connecting with the process participating device and before sending the trigger frame to the connected process participating device, the method further includes: Sending a perception establishment request to the process participating device, wherein the perception establishment request is used to perform perception negotiation with the process participating device; When the awareness establishment response returned by the process participating device is received, the awareness negotiation with the process participating device is completed.

11. A signal processing method, characterized in that: The method is applied to a process participating device, and the method includes: When executing the wireless security perception process, receiving a trigger frame sent by a connected process initiating device, the trigger frame including a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier; Executing a process operation corresponding to the process control identifier, and returning response information to the process initiating device after the process operation is completed, the response information being a feedback signal sent after determining a match with the perception parameter when executing the process operation, the feedback signal including a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed; Among them, when the process control identifier includes the first process control identifier, the perception parameters include frame type parameters, device connection identifier and security parameters; the perception parameters also include the number of repeated transmissions of empty data packets NDP, NDP transmission power and at least one of the NDP arrival target received signal strength indication RSSI; the process operation corresponding to the first process control identifier is used to poll to obtain the process participating device that can perform wireless security perception measurement.

12. A signal processing device, characterized in that: The signal processing device comprises: A sending module, configured to send a trigger frame to a connected process participating device when executing a wireless security perception process, wherein the trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier; a receiving module, configured to receive response information returned by the process participating device after executing the process operation corresponding to the process control identifier, the response information being a feedback signal sent by the process participating device after determining a match with the perception parameter when executing the process operation, the feedback signal including a measurement signal, measurement feedback on the measurement signal, or feedback on whether wireless security perception measurement can be performed; or, A receiving module, configured to receive a trigger frame sent by a connected process initiating device when executing a wireless security perception process, wherein the trigger frame includes a process control identifier of the wireless security perception process and a perception parameter corresponding to the process control identifier; an execution module, configured to execute the process operation corresponding to the process control identifier, and return response information to the process initiating device after the process operation is executed, wherein the response information is a feedback signal sent after determining that the process operation matches the perception parameter when executing the process operation, and the feedback signal includes a measurement signal, measurement feedback on the measurement signal, or feedback on whether the wireless security perception measurement can be performed; Among them, when the process control identifier includes the first process control identifier, the perception parameters include frame type parameters, device connection identifier and security parameters; the perception parameters also include the number of repeated transmissions of empty data packets NDP, NDP transmission power and at least one of the NDP arrival target received signal strength indication RSSI; the process operation corresponding to the first process control identifier is used to poll to obtain the process participating device that can perform wireless security perception measurement.

13. A signal processing device, characterized in that: The signal processing device includes a memory, a processor, and a signal processing program stored in the memory and running on the processor, wherein the signal processing program executes the signal processing method according to any one of claims 1 to 11.

14. A computer storage medium, characterized in that When the computer storage medium is executed by a processor, the signal processing method according to any one of claims 1 to 11 is implemented.

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