Sensing method and communication apparatus

Abstract

Provided in the embodiments of the present application are a sensing method and a communication apparatus. The method comprises: a first apparatus sends a first reference signal, the first reference signal and a second reference signal corresponding to the same time-frequency resource, and the first reference signal being determined on the basis of a first phase and a sequence (such as a first sequence) corresponding to the second reference signal, wherein the second reference signal is a reference signal for a second apparatus to acquire sensing information of the first apparatus, and the first reference signal is a reference signal for the first apparatus to interfere with its own sensing information. In a wireless sensing scenario, the method enables the first apparatus to perform privacy protection on sensing information of an associated user, so as to avoid the problem of privacy leakage.

Description

A sensing method and a communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 2, 2024, with application number 202410163289.2 and invention name “A Perception Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and more specifically, to a perception method and a communication device. Background Art

[0003] With the development of communications technology, wireless sensing has become an important technology. In wireless sensing technology, a transmitting device radiates electromagnetic waves into the surrounding environment and sends a specific signal. In response, a receiving device compares the electromagnetic waves reflected from the environment with the signal and analyzes the correlation between the transmitted and received signals to determine relevant information about the surrounding environment. For example, based on the relationship between the transmitted and received signals, the receiving device can analyze the presence of a target object to be detected or sensed in the environment, the distance between the scatterer and the transceiver, the orientation or angle of the scatterer relative to the transceiver (e.g., horizontal or vertical), and the speed of the scatterer relative to the transceiver.

[0004] Wireless sensing technology can typically detect the relative position, movement speed, and micro-motion information of target objects. With the development of technology, some consumers believe that wireless sensing technology may infringe on their privacy. Therefore, how to protect consumer privacy in wireless sensing scenarios is currently a research hotspot. Summary of the Invention

[0005] The embodiments of the present application provide a perception method and a communication device, which can implement privacy protection for devices associated with users with privacy protection requirements in a wireless perception scenario.

[0006] In a first aspect, a sensing method is provided. The method may be performed by a first device, or may be performed by a chip or circuit used for the first device, which is not limited in this application. For ease of description, the following description is based on an example of the first device performing the sensing method.

[0007] The method includes: a first device sending a first reference signal, wherein the time-frequency resource corresponding to the first reference signal is the same as the time-frequency resource corresponding to the second reference signal, the first reference signal being determined based on a first phase and a first sequence, and the first sequence being a sequence corresponding to the second reference signal. The second reference signal is a reference signal used to obtain perception information, and the first reference signal is a reference signal used to interfere with the perception information or protect privacy.

[0008] It should be understood that the first phase may be a random phase. The first phase may be determined by the first device itself, for example, the first phase is a random phase generated by the first device on different symbols. The first phase can interfere with the perception result of the second reference signal, thereby effectively protecting the privacy of the user associated with the first device.

[0009] It should also be understood that the interfered perception information can be understood as the perception information of the user associated with the first device, and the user can be a person or an object associated with the first device.

[0010] It should also be understood that the first reference signal is a reference signal used to interfere with the perception information, or it should be understood that the first reference signal is a reference signal used to scramble the perception information.

[0011] It should also be understood that the first sequence may be a sequence corresponding to the frequency domain and / or a sequence corresponding to the time domain, which is not limited in this application.

[0012] Based on the above technical solution, the first reference signal is determined based on the sequence (e.g., the first sequence) and the first phase of the second reference signal. This first reference signal is used by the first device to interfere with the perception information of the first device, thereby enabling the first device to protect the privacy of the perception information of the associated user in a wireless perception scenario and avoid privacy leakage.

[0013] In combination with the first aspect, in some possible implementations, the first device sends the first reference signal, including: the first device sends the first reference signal at a first moment, wherein the first moment is the same as the moment when the first device receives the second reference signal, or the first moment is the moment when the first device estimates / predicts the receipt of the second reference signal, or the first moment is determined based on the moment when the first device receives a third reference signal, and the third device comes from the second device.

[0014] It should be understood that the third reference signal may be a reference signal received from the second device before the first device receives the second reference signal. The first device may determine the time (eg, the first time) of receiving the second reference signal by the time of receiving the third reference signal.

[0015] Optionally, in the case where the second reference signal or the third reference signal can reach the first device through multiple transmission paths, the first device can determine the first moment based on the moment when it arrives at the first device earliest, or the first device can determine the first moment based on the moment when the signal is received based on the transmission path with the strongest signal power among the multiple transmission paths.

[0016] Based on the above technical solution, the time when the first device sends the first reference signal is the same as the time when it receives the second reference signal, thereby enhancing the correlation between the first reference signal and the second reference signal, ensuring that the first reference signal can interfere with the perception information of the user associated with the first device, and realizing the privacy protection requirements of the user associated with the first device.

[0017] In combination with the first aspect, in some possible implementations, the sequence of the first reference signal is determined by multiplying the first sequence by the first phase.

[0018] In combination with the first aspect, in some possible implementations, the first device sends the first reference signal, including: the first device sends the first reference signal at a first moment, the time interval between the first moment and the second moment is a first time interval, the second moment is the time when the first device receives the second reference signal, or the second moment is the moment when the first device estimates / predicts the receipt of the second reference signal, or the second moment is determined based on the moment when the first device receives a third reference signal, the first reference signal is determined based on the first phase, the first sequence and the first time interval, and the first time interval is not 0.

[0019] Based on the above technical solution, the first device sends a first reference signal at a first moment. The time interval between the first moment and the second moment of receiving the second reference signal may be a first time interval. The first time interval is not zero, that is, the time when the first device sends the first reference signal and receives the second reference signal may not be exactly the same. When the first time interval is not zero, the first reference signal is determined based on the first phase, the first sequence, and the first time interval. By introducing an additional modulation signal into the frequency domain sequence, it is equivalent to shifting (or cyclically shifting) the signal in the time domain. This allows the first reference signal to interfere with the perception information of the user associated with the first device even when the first device sends the first reference signal and receives the second reference signal at different times.

[0020] In combination with the first aspect, in some possible implementations, the first sequence includes a first frequency domain sequence, the sequence of the first reference signal in the frequency domain is a second frequency domain sequence, and the signal mapped to the subcarrier k by the second frequency domain sequence is Ax k exp(-j2πf k T)exp(jθ), where A is a complex constant, x k is a signal mapped to subcarrier k by the first frequency domain sequence, the first frequency domain sequence is a sequence of the second reference signal in the frequency domain, and f k is the center frequency of the subcarrier k, or f k =kf scs, f scs is the subcarrier spacing, T is the first time interval, and θ is the first phase.

[0021] With reference to the first aspect, in some possible implementations, the first apparatus sending the first reference signal includes:

[0022] The first device sends the first reference signal according to a first power value, where the first power value is determined according to one or more of the following: a maximum transmit power of the first device, α1RSRP4+α210log(K)+A,

[0023] Among them, α1 to α5 are configured or pre-configured coefficients greater than or equal to 0, RSRP4 is the received power of the fourth reference signal, the fourth reference signal comes from the second device, K is used to indicate the bandwidth of the first reference signal, PL is the path loss between the first device and the receiving end of the second reference signal (for example, the second device, or other device), N′ is an integer, and A and C are constants.

[0024] It should be understood that the fourth reference signal may be the same reference signal as the third reference signal or a different reference signal, and this application does not limit this.

[0025] It should be understood that the fourth reference signal may be the same reference signal as the second reference signal or a different reference signal, and this application does not limit this.

[0026] It should also be understood that N' is a configured or preconfigured or predefined integer, or N' is Wherein, c is the speed of light, B is the bandwidth of the first reference signal, and D is the interference-allowed distance range of the first reference signal. Alternatively, D may be preconfigured or predetermined, or indicated by the system / network device through configuration information, which is not limited in this application.

[0027] Based on the above technical solution, by limiting the transmission power of the first reference signal sent by the first device, while ensuring the interference effect of the first reference signal on the perception information of the user associated with the first device, the interference of the first reference signal on the perception information of other targets is reduced.

[0028] In conjunction with the first aspect, in some possible implementations, the first power value is a minimum value of one or more of the following: a maximum transmit power of the first device, α1RSRP4+α210log(K)+A,

[0029] In combination with the first aspect, in some possible implementation methods, before the first device sends the first reference signal, the method also includes: the first device sends first information, the first information indicates that the user associated with the first device has a need for privacy protection of perceived information, and / or the first information indicates the first device sends the first reference signal.

[0030] It should be understood that the first information indicating that the first device sends a first reference signal can be understood as: the first information indicating that the first device will or needs to send a first reference signal, or the first information indicating that the first device will interfere with the perception information of the first device or protect privacy through the first reference signal.

[0031] In combination with the first aspect, in some possible implementations, before the first device sends the first reference signal, the method also includes: the first device receives second information, the second information indicating configuration information of the second reference signal, and the configuration information of the second reference signal includes information about reference signal resources occupied by the second reference signal.

[0032] In combination with the first aspect, in some possible implementations, before the first device sends the first information, the method also includes: the first device authenticates with a third device, and the authentication is used to determine that the first device can protect the privacy of the perceived information of the user associated with the first device.

[0033] It should be understood that the third device and the second device may be the same device or different devices. When the third device and the second device are different devices, the second device may be a device within the coverage range of the third device.

[0034] In combination with the first aspect, in some possible implementations, before the first device sends the first reference signal, the method also includes: the first device receives configuration information of the second reference signal, and the configuration information of the second reference signal includes time-frequency resources corresponding to the second reference signal.

[0035] In combination with the first aspect, in some possible implementations, the second information indicates that the second reference signal is used by the second device to collect and / or estimate biometric data of users within the coverage area of ​​the second device.

[0036] In a second aspect, a sensing method is provided. The method may be performed by a second device, or may be performed by a chip or circuit for the second device, which is not limited in this application. For ease of description, the following description is based on an example of the second device performing the sensing method.

[0037] The method includes: a second device receives a first reference signal from a first device, the time-frequency resources corresponding to the first reference signal are the same as the time-frequency resources corresponding to the second reference signal, the first reference signal is determined based on a first phase and a first sequence, the first sequence is the sequence of the second reference signal, wherein the second reference signal is a reference signal for obtaining perception information, and the first reference signal is a reference signal for interfering with the perception information or protecting privacy.

[0038] It should be understood that the second aspect corresponds to the first aspect mentioned above, and the technical effects can be referred to the technical effects in the first aspect mentioned above, which will not be repeated here.

[0039] In combination with the second aspect, in some possible implementations, the sequence of the first reference signal is determined by multiplying the first sequence by the first phase.

[0040] With reference to the second aspect, in some possible implementations, the transmit power of the first reference signal is a first power value, where the first power value is determined according to one or more of the following:

[0041] The maximum transmission power of the first device is α1RSRP4+α210log(K)+A,

[0042] Among them, α1 to α5 are configured or pre-configured coefficients greater than or equal to 0, RSRP4 is the received power of the fourth reference signal, the fourth reference signal comes from the second device, K is used to indicate the bandwidth of the first reference signal, PL is the path loss between the first device and the receiving end of the second reference signal (for example, the second device, or other device), N′ is an integer, and A and C are constants.

[0043] In conjunction with the second aspect, in some possible implementations, the first power value is a minimum value of one or more of the following: a maximum transmit power of the first device, α1RSRP4+α210log(K)+A,

[0044] In combination with the second aspect, in some possible implementations, before the second device receives the first reference signal from the first device, the method also includes: the second device receives first information from the first device, the first information indicating that a user associated with the first device has a need for privacy protection of perceived information, and / or the first information instructs the first device to send the first reference signal.

[0045] In combination with the second aspect, in some possible implementations, the method further includes: the second device sends second information, the second information indicates configuration information of the second reference information, and the configuration information of the second reference signal includes information on reference signal resources occupied by the second reference signal.

[0046] In combination with the second aspect, in some possible implementations, before the second device receives the first reference signal from the first device, the method also includes: the second device authenticates the first device, and the authentication is used to determine that the first device is capable of protecting the privacy of the perception information of the user associated with the first device.

[0047] In combination with the second aspect, in some possible implementations, before the second device receives the first reference signal from the first device, the method also includes: the second device sends configuration information of the second reference signal, and the configuration information of the second reference signal includes time-frequency resources corresponding to the second reference signal.

[0048] In combination with the second aspect, in some possible implementations, the second information indicates that the second reference signal is used by the second device to collect and / or estimate biometric data of users within the coverage area of ​​the second device.

[0049] According to a third aspect, a communication device is provided, including: a transceiver unit, configured to send a first reference signal, the time-frequency resources corresponding to the first reference signal being the same as the time-frequency resources corresponding to a second reference signal, the first reference signal being determined based on a first phase and a first sequence, the first sequence being the sequence of the second reference signal, wherein the second reference signal is a reference signal for obtaining perception information, and the first reference signal is a reference signal for interfering with the perception information or protecting privacy.

[0050] It should be understood that the transceiver unit is also used to perform the receiving and sending processing as in the first aspect above.

[0051] In a possible implementation, the communication device further includes a processing unit, which is further configured to perform other processing in addition to receiving and sending in the first aspect described above.

[0052] In a fourth aspect, a communication device is provided, including: a transceiver unit for receiving a first reference signal from a first device, the time-frequency resources corresponding to the first reference signal are the same as the time-frequency resources corresponding to the second reference signal, the first reference signal is determined based on a first phase and a first sequence, the first sequence is the sequence of the second reference signal, wherein the second reference signal is a reference signal for obtaining perception information, and the first reference signal is a reference signal for interfering with the perception information or protecting privacy.

[0053] It should be understood that the transceiver unit is also used to perform the receiving and sending processing as in the second aspect above.

[0054] In a possible implementation, the communication device further includes a processing unit, which is further configured to perform other processing in addition to receiving and sending in the second aspect described above.

[0055] In a fifth aspect, a communication device is provided, which is configured to execute the method provided in the first and / or second aspects. Specifically, the device may include units and / or modules, such as a processing unit and / or a transceiver unit (or a communication unit), configured to execute the method provided in any one of the above implementations of the first and second aspects.

[0056] In one implementation, the apparatus is a communication device (e.g., a terminal device or a network device). When the apparatus is a communication device, the communication unit may be a transceiver or a transceiver unit, or an input / output interface; the processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input / output interface may be an input / output circuit.

[0057] In another implementation, the device is a chip, chip system, or circuit used in a communication device (such as a terminal device or a network device). When the device is a chip, chip system, or circuit used in a communication device, the communication unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; and the processing unit may be at least one processor, processing circuit, or logic circuit.

[0058] In a sixth aspect, a communication device is provided, which includes: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute the method provided in any one of the implementation modes of the first and second aspects above.

[0059] In one implementation, the apparatus is a communication device (such as a terminal device or a network device).

[0060] In another implementation, the apparatus is a chip, a chip system, or a circuit used in a communication device (such as the first device or the second device).

[0061] In a seventh aspect, the present application provides a processor for executing the methods provided in the above aspects.

[0062] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or if they do not conflict with their actual functions or internal logic in the relevant descriptions, they can be understood as operations such as processor output and input, or as sending and receiving operations performed by the radio frequency circuit and antenna. This application does not limit this.

[0063] In an eighth aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, and the program code includes a method for executing any one of the above-mentioned implementation methods in the first aspect and the second aspect.

[0064] In a ninth aspect, a computer program product comprising instructions is provided, which, when run on a computer, enables the computer to execute the method provided in any one of the implementations of the first and second aspects above.

[0065] In the tenth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions stored in the memory through the communication interface and executes the method provided by any one of the implementation methods in the first and second aspects above.

[0066] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction stored in the memory. When the computer program or instruction is executed, the processor is used to execute the method provided in any one of the implementation methods of the first aspect or the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] FIG1 is a schematic diagram of a system architecture applicable to an embodiment of the present application.

[0068] FIG2 is a schematic diagram of a scenario to which an embodiment of the present application is applicable.

[0069] FIG3 is a flow chart of a perception method provided in an embodiment of the present application.

[0070] FIG4 is a schematic diagram of a time unit for a first device to send a first reference signal.

[0071] FIG5 is a schematic diagram of another time unit for a first device to send a first reference signal.

[0072] FIG6 is a schematic diagram of a simulation of leakage of the first reference signal in a delay spectrum.

[0073] FIG7 is a schematic diagram of a delay domain simulation.

[0074] FIG8 is a schematic diagram of a communication device 800 provided in an embodiment of the present application.

[0075] FIG9 is a schematic diagram of another communication device 900 provided in an embodiment of the present application.

[0076] FIG10 is a schematic diagram of a chip system 1000 provided in accordance with an embodiment of the present application. DETAILED DESCRIPTION

[0077] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0078] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), the 3rd Generation Partnership Project (3GPP) related cellular system, world-wide interoperability for microwave access (WiMAX) communication system, wireless guarantee (wifi), fifth generation (5G) system or new radio (NR), etc.

[0079] The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system, etc. This application does not limit this.

[0080] Figure 1 is a schematic diagram of a communication system architecture applicable to an embodiment of the present application. In the communication system shown in Figure 1, there are mainly two types of communication interfaces, namely the communication interface between the terminal device 121 and the network device 110 (for example, the Uu interface), and the communication interface between the terminal device 121 and the terminal device 122 (for example, the proximity-based services communication 5 (PC5) interface. The Uu interface is used for communication between the user equipment and the base station or the roadside unit, and the PC5 interface is used for side link communication between the terminal and the terminal. The link on the Uu 5 interface for the terminal to send data to the base station is called the uplink, and the link for the terminal to receive data sent by the base station is called the downlink. The communication interface between the terminal device and the terminal device is called the PC5 interface. The link for transmitting data between the terminal device and the terminal device on the PC5 interface is called the side link (SL) or the through link. The side link is generally used for device to device (device to device). In some scenarios, direct communication between devices can be performed, such as vehicle to everything (V2X), etc. In this scenario, data transmission between devices does not need to pass through a base station. In the system architecture 10 to which the communication method provided in the embodiment of the present application is applicable, the network device shown in Figure 1 may also not be included, and this application does not limit this. Among them, vehicle to everything (V2X) communication can be regarded as a special case of D2D communication. In addition, in indoor commercial scenarios, various high-speed transmission services can be achieved through direct communication between terminal devices. For example, high-definition screen projection or file sharing between a mobile phone terminal and a smart screen, service transmission between a mobile phone terminal and virtual reality (VR) glasses, etc.

[0081] The following is a brief introduction to the devices shown in Figure 1:

[0082] 1. Terminal equipment: This may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. A terminal equipment may be a device that provides voice / data connectivity to a user, such as a handheld device or vehicle-mounted device with wireless connectivity. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). The terminal equipment in the network (PLMN), etc., is not limited to this in the embodiments of the present application.

[0083] In the embodiments of the present application, the terminal device may also be a terminal device in the Internet of Things (IoT) system. The IoT is an important component of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things and things. In addition, the terminal device may also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for everyday wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices; they achieve powerful functions through software support and data and cloud interaction. Broadly speaking, wearable smart devices include those that are full-featured, large in size, and can achieve full or partial functions independently of smartphones, such as smart watches or smart glasses, as well as those that focus on a specific application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0084] 2. Network device: It can be a device used to communicate with a terminal device. The network device can be a base station (Base Transceiver Station, BTS) in the Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) system, an evolved base station (Evolutional NodeB, eNB or eNodeB) in the LTE system, or a wireless controller in the Cloud Radio Access Network (CRAN) scenario, or the network device can be a relay station, access point, vehicle-mounted device, wearable device, and network equipment in the future 5G network or network equipment in the future evolved PLMN network, etc., and the embodiments of the present application are not limited. On the Uu interface, data and radio resource control (RRC) signaling are transmitted between the terminal device and the base station through a radio bearer. Among them, the radio bearer used to transmit data is called a data radio bearer (DRB), and the bearer used to transmit RRC signaling is called a signaling radio bearer (SRB). A radio bearer includes a packet data convergence protocol (PDCP) entity and a radio link control (RLC) bearer. Among them, an RLC bearer includes an RLC entity and a corresponding logical channel (LCH). The configuration of a radio bearer is the configuration of the PDCP entity, RLC entity and logical channel of the radio bearer. The configuration of the radio bearer needs to be able to guarantee the quality of service (QoS) requirements of the service transmitted through the radio bearer. On the Uu interface, the configuration of the radio bearer is configured by the network device for the terminal. On the PC5 port, data and RRC signaling are also transmitted between terminal devices through a radio bearer. The radio bearer on the PC5 port can be called a sidelink radio bearer (SL RB).In the Long Term Evolution (LTE) V2X system, radio bearers on the PC5 port are established by the transmitting terminal and the receiving terminal respectively. The configuration of the radio bearers is predefined by the standard or determined by the transmitting terminal device and the receiving terminal device.

[0085] 3. Core network equipment: This equipment is used to provide user connections, manage users, and carry out service bearer operations. For example, establishing user connections includes mobility management (MM) and paging. User management includes user description, QoS, security (security measures provided by the authentication center include security management of mobile services and security processing of external network access), etc. Bearer connections include external public switched telephone networks (PSTN), external circuit data networks and packet data networks, the Internet, etc. For example, a core network device can be an access and mobility management function (AMF), which is primarily responsible for signaling processing, i.e., control plane functions, including access control, mobility management, attach and detach, and gateway selection. A core network device can also be a session management function (SMF), a unified data management (UDM), etc. A core network device can also be a perception function network element, or a network element with perception functions. A perception function network element can be responsible for initiating the perception process in the network, collecting perception information, etc. This application does not limit this.

[0086] With the development of communication technology, wireless sensing technology has become a very important technology. Wireless sensing technology, also known as sensorless scene perception technology, analyzes the changes in wireless signals during propagation and obtains the characteristics of the signal propagation space (channel) to achieve scene perception.

[0087] In wireless sensing technology, a transmitting device radiates electromagnetic waves and sends specific signals to the surrounding environment. The receiving device then receives the electromagnetic waves and signals reflected by the environment. The transceiver determines relevant information about the device's surrounding environment by comparing and analyzing the correlation between the transmitted and received signals. For example, the transceiver can use the relationship between the transmitted and received signals to analyze whether there is a target object to be detected or sensed in the environment, the distance between the scatterer and the transceiver, the orientation or angle of the scatterer relative to the transceiver (e.g., horizontal or vertical), and the speed of the scatterer relative to the transceiver.

[0088] Wireless sensing technology can typically detect the relative position, movement speed, and micro-motion information of target objects. With the development of technology, some consumers believe that wireless sensing technology may infringe on their privacy. Therefore, how to protect consumer privacy in wireless sensing scenarios is currently a research hotspot.

[0089] In response to the above research hotspots, existing technical solutions have proposed a region-based perception authorization mechanism. In this mechanism, authorized devices can only perform wireless perception within a specific authorized area. For example, in outdoor scenarios such as highways, railways, and streets, base stations generally only perceive larger objects such as trains and cars, and do not perceive smaller objects such as people. Therefore, the privacy leakage caused by perception is small. For example, in street scenarios, users are densely populated and the environment is relatively complex. It is difficult to obtain perception information about a single person, so the privacy leakage caused by perception is also small. However, the region-based perception authorization mechanism is often strict in terms of regional divisions. That is, if some users in an area have privacy protection requirements, wireless perception will not be possible in that area, thereby reducing the overall benefit of perception to the entire system (such as a 5G system or a 6G system).

[0090] In view of the above problems, the present application provides a sensing method that can implement privacy protection for devices associated with users with privacy protection requirements in a wireless sensing scenario. The method provided by the present application will be exemplarily introduced below.

[0091] FIG2 is a schematic diagram of a scenario provided by an embodiment of the present application. Assume that UE#0 perceives and obtains relevant information about the surrounding environment through a reference signal (e.g., a second reference signal). For example, UE#0 can perceive the surrounding environment in a self-transmitting and self-receiving manner, or UE#0 can send a reference signal, and other devices (not shown in the figure) receive the reference signal to perceive the surrounding environment. At the same time, there are three users (e.g., people who can be perceived) in this scenario, namely user#1, user#2, and user#3, and there is also UE#1. UE#1 is the device associated with user#1, and user#1 is the user associated with UE#1. Among them, the second reference signal sent by UE#0 is reflected or scattered by user#1, user#2, and user#3 and reaches the receiving end of the second reference signal (e.g., UE#0 itself in the self-transmitting and self-receiving sensing mode, and other devices in the self-transmitting and other-receiving sensing mode). The reference signal received by the receiving end contains the perception information of user#1, user#2, and user#3, such as Doppler information and / or micro-motion information, etc. Assuming that user #1 has privacy protection requirements, UE #1 associated with user #1 can send a reference signal (e.g., a first reference signal). The first reference signal is used to interfere with the perception information of user #1, so that the receiving end of the second reference signal cannot determine the accurate perception information of user #1, thereby playing a certain role in privacy protection for user #1.

[0092] It should be understood that in the embodiment of the present application, UE#0 can also be replaced by a network device, such as an access network device.

[0093] In conjunction with the scenario shown in FIG2 above, the method provided in this application will be described in detail below in conjunction with a specific method schematic diagram.

[0094] FIG3 is a flow chart of a perception method provided in an embodiment of the present application.

[0095] It should be understood that in the method shown in FIG3 , the first device is an example of a terminal device associated with a privacy protection requirement, and the second device is an example of a device that transmits a reference signal for sensing the surrounding environment. It is assumed that the first device is within the sensing range / deployment area of ​​the second device.

[0096] It should also be understood that the second device may be a network device, a terminal device, or a unit having a sensing function (SF), which is not limited in this application. When the second device is a terminal device, the second device may be UE#1 in FIG. 2 ; the first device may be UE#0 in FIG. 2 .

[0097] It should be understood that in the method shown in FIG. 3 , the second device and the third device may be the same device.

[0098] As shown in FIG3 , the method may include the following steps:

[0099] 301. The first device receives second information.

[0100] The second information indicates configuration information of the second reference signal, and the configuration information of the second reference signal includes information about reference signal resources occupied by the second reference signal. Specifically, the configuration information may include one or more of configuration information related to time domain resources, frequency domain resources, code domain resources, and a used sequence occupied by the second reference signal.

[0101] It should be understood that the second reference signal is used to wirelessly sense the surrounding environment. For example, when the second device sends the second reference signal and the second device itself receives the second reference signal after reflection or scattering by the environment, it can be considered that the second device itself wirelessly senses the surrounding environment through the second reference signal; for another example, when the second device sends the second reference signal and the fourth device receives the second reference signal after reflection or scattering by the environment, it can be considered that the fourth device, or the second device and the fourth device sense the surrounding environment; for another example, the receiving end of the second reference signal (for example, the second device or the fourth device) can report the reception measurement result of the second reference signal to other devices, such as the third device, and the third device can also be considered to sense the surrounding environment wirelessly.

[0102] In one possible implementation, the second information includes a purpose or use of transmitting the second reference signal, where the use of the second reference signal includes indicating that the second reference signal is a reference signal for wireless sensing. For example, the second information indicates that the second reference signal is used to collect and / or estimate biometric data (e.g., Doppler information and / or micro-motion information) of surrounding users.

[0103] It should be understood that, generally speaking, there is a one-to-one correspondence between reference signal resources and reference signals, and reference signal resources can generally be understood as resources used to send reference signals. Therefore, in the embodiments of the present application, "reference signal" and "reference signal resource" can replace each other in certain scenarios. For example, "reference signal configuration information" can be understood as "reference signal resource configuration information."

[0104] It should be understood that the first device receiving the second information may be the first device receiving the second information sent by the second device, or the first device receiving the second information sent by a third device. Specifically, as shown in step 301 in Figure 3, the first device receiving the second information may include the following two ways:

[0105] In a first approach, the second device sends the second information to the first device, and the first device receives the second information sent by the second device.

[0106] For example, the second device can determine the reference signal resources occupied by the second reference signal by itself and send the second information to the first device. When the second device and the first device are both terminal devices, the second device can send the second information to the first device through a side link (such as Sidelink); when the second device is a network device and the first device is a terminal device, the second device can send the second information to the first device through a downlink.

[0107] For another example, the third device may first determine the reference signal resources occupied by the second reference signal and send the second information to the second device, which then forwards the second information to the first device. When the second device and the first device are both terminal devices, the third device may be a network device or a core network device. The third device may first send the configuration information of the second reference signal resources to the second device via a downlink or a link between the core network and the terminal device, and the second device may send the second information to the first device via a sidelink. When the second device is a network device and the first device is a terminal device, the third device may be a core network device. The third device may send the resource configuration information of the second reference signal via a link between the core network device and the network device, and the second device may send the second information to the first device via a downlink.

[0108] In a second method, the third device sends the second information to the first device, and the first device receives the second information sent by the third device.

[0109] For example, the third device determines the reference signal resources occupied by the second reference signal and sends the second information to the first device without forwarding it through the second device. When the third device and the first device are both terminal devices, the third device can send the second information to the first device via a sidelink. When the third device is a network device and the first device is a terminal device, the third device can send the second information to the first device via a downlink. When the third device is a core network device and the first device is a terminal device, the third device can send the second information to the first device via the link between the core network device and the terminal device.

[0110] It should be understood that the first device can receive the second information through any one or more of the above-mentioned methods one and two. Accordingly, the first device can determine the second reference signal for wireless perception of the environment based on the second information, that is, the second reference signal is used to obtain perception information of users in the environment.

[0111] 302. The first device sends first information.

[0112] The first information indicates that the user associated with the first device has a privacy protection requirement for the perception information, and / or the first information indicates that the first device sends a first reference signal, which is a reference signal used to interfere with the perception information or protect privacy.

[0113] It should be understood that the first information indicating that the first device sends a first reference signal can be understood as: the first information indicating that the first device will or needs to send a first reference signal, or the first information indicating that the first device will interfere with the perception information of the first device or protect privacy through the first reference signal.

[0114] It should also be understood that the first device may send the first information in the following two ways:

[0115] In a third approach, the first device sends the first information to the second device, and the second device receives the first information sent by the first device.

[0116] For example, if the first device determines that the user associated with itself has a need for privacy protection of perception information, the first device can send the first information to the second device. When the first device and the second device are both terminal devices, the second device can send the first information to the second device via a side link (such as Sidelink); when the second device is a network device and the first device is a terminal device, the first device can send the first information to the second device via an uplink.

[0117] For another example, if the first device determines that the user associated with it has a need for privacy protection of perception information, the first device can send the first information to the third device, and the third device can forward the first information to the second device. When the second device and the first device are both terminal devices, the third device can be a network device or a core network device. The first device can send the first information to the third device via an uplink or a link between the core network device and the terminal device, and the third device can forward the first information to the second device via a downlink or a link between the core network device and the terminal device; when the second device is a network device and the first device is a terminal device, the third device can be a core network device. The first device can send the first information to the third device via a link between the terminal device and the core network device, and the third device can forward the first information to the second device via a link between the core network device and the network device.

[0118] In a fourth approach, the first device sends the first information to the third device, and correspondingly, the third device receives the first information from the first device.

[0119] For example, if a first device determines that its associated user requires privacy protection for perception information, the first device sends the first information to a third device. If both the third device and the first device are terminal devices, the first device may send the first information to the third device via a sidelink. If the third device is a network device and the first device is a terminal device, the first device may send the first information to the third device via an uplink. If the third device is a core network device and the first device is a terminal device, the first device may send the first information to the third device via a link between the terminal device and the core network device.

[0120] It should be understood that the first device can send the first information through any one or more of the above-mentioned methods three and four. Accordingly, after the second device or the third device receives the first information, the second device or the third device can determine based on the first information that the user associated with the first device has a need for privacy protection of his or her own perception information.

[0121] 303. The second device sends a second reference signal.

[0122] The second reference signal is used for wireless sensing of the surrounding environment. For example, the second device sends a specific sequence in a specific time-frequency resource according to the configuration information of the second reference signal resource indicated by the second information in step 301.

[0123] It should be understood that the second device can perceive the surrounding environment through the second reference signal in a self-transmitting and self-receiving manner, or the second device can perceive the surrounding environment through the second reference signal in a self-transmitting and self-receiving manner. Where the second device perceives the surrounding environment through the second reference signal in a self-transmitting and self-receiving manner, for example, the second device transmits the second reference signal as a transmitter, and correspondingly, the second device receives the second reference signal as a receiver after the second reference signal is reflected or scattered by scatterers in the surrounding environment; Where the second device perceives the surrounding environment through the second reference signal in a self-transmitting and self-receiving manner, for example, the second device transmits the second reference signal as a transmitter, and other devices (such as a third device or a fourth device) receive the second reference signal as a receiver after the second reference signal is reflected or reflected by scatterers in the surrounding environment.

[0124] 304. The first device sends a first reference signal.

[0125] Correspondingly, the receiving end of the second reference signal receives the first reference signal. The receiving end of the second reference signal may be the second device, or the third device, or the fourth device, which is not limited in this application.

[0126] The first reference signal is a reference signal used to interfere with perception information (eg, perception information determined according to the second reference signal) or protect privacy (eg, privacy of a user associated with the first device).

[0127] It should be understood that the time-frequency resources where the first reference signal is located are the same as the time-frequency resources where the second reference signal is located, so that the signal received by the receiving end of the first reference signal (for example, the second device, the third device or the fourth device) is the superimposed signal of the first reference signal and the second reference signal. However, since the receiving end of the second reference signal cannot determine the specific first reference signal, the perception information determined by the receiving end through the second reference signal will be interfered with by the first reference signal, that is, the first reference signal plays a role in privacy protection of the perception information of the first device.

[0128] As an example, when the time-frequency resources corresponding to the first reference signal and the time-frequency resources corresponding to the second reference signal are resources in an orthogonal frequency division multiplexing (OFDM) system, the time-frequency resources corresponding to the first reference signal and the time-frequency resources corresponding to the second reference signal occupy the same symbols and subcarriers.

[0129] It should also be understood that the first reference signal is determined based on the first phase and the first sequence, and the first sequence is the sequence corresponding to the second reference signal. The first phase may be a random phase, for example, the first phase may be determined by the first device itself (e.g., different random phases generated on different symbols), which is not limited in this application. The first sequence may be a sequence in the time domain and / or frequency domain, which is not limited in this application.

[0130] It should be understood that in order to make the first reference signal sent by the first device interfere only with the perception information of the user associated with the first device, this can be achieved through the following methods:

[0131] Method 1: A first device sends a first reference signal at a first time. The first time is the same as a second time, and the second time is the time when the first device receives the second reference signal, or the second time is the time when the first device estimates / predicts that the second reference signal will be received.

[0132] It should be understood that, without limiting the second moment, the first moment can also be understood as the moment when the first device receives the second reference signal, or the first moment is the moment when the first device estimates / predicts the receipt of the second reference signal.

[0133] Optionally, when the first device can receive the second reference signal through multiple paths, the second moment is the moment when the first device receives the second reference signal through the first path, or the second moment is the moment when the first device estimates / predicts that the second reference signal will be received through the first path, wherein the first path is the path with the smallest delay between the first device and the second device, or it can also be understood that the first path is the path that the signal can reach the first device earliest after being sent from the second device, or it can also be understood that the first path is the path with the smallest channel attenuation between the first device and the second device, or it can also be understood that the first path is the path with the largest power (or energy, amplitude) after the signal is sent from the second device to the first device.

[0134] In one possible implementation, the first device sends the first reference signal at a time (eg, a second time) when the second reference signal is received. The time corresponding to the first device receiving the second reference signal is the same as the time when the first device sends the first reference signal.

[0135] In another possible implementation, the first device may estimate or predict the time (second time) at which the second reference signal is received based on the time at which another reference signal (e.g., the third reference signal) is received, and transmit the first reference signal at the first time. The other reference signal (e.g., the third reference signal) comes from the second device.

[0136] It should be understood that the first reference signal is determined based on the first sequence and first phase corresponding to the second reference signal, and the time when the first device sends the first reference signal is the same as the time when the second reference signal is received, so that the correlation between the first reference signal and the second reference signal is high. The first reference signal can interfere with the signal reflected by the second reference signal through the user associated with the first device, thereby protecting the perception information of the first device.

[0137] As an example, the first reference signal is determined based on a first sequence multiplied by a first phase, wherein the first sequence is a sequence corresponding to the second reference signal, the first sequence includes a first frequency domain sequence, and the first phase can be a random phase determined by the first device itself. For example, the frequency domain sequence of the first reference signal is the first frequency domain sequence multiplied by the first phase (that is, each element in the first frequency domain sequence is multiplied by the first phase to form the frequency domain sequence of the first reference signal), wherein the first frequency domain sequence is the frequency domain sequence corresponding to the second reference signal. For another example, the time domain sequence of the first reference signal is the first time domain sequence multiplied by the first phase (that is, each element in the first time domain sequence is multiplied by the first phase to form the time domain sequence of the first reference signal), wherein the first time domain sequence is the time domain sequence corresponding to the second reference signal. When the first device needs to send the first reference signal on multiple different time units (such as OFDM symbols), the first phase determined on each time unit may be different.

[0138] It should be understood that in the embodiment of the present application, θ is used to represent the first phase. In the embodiment of the present application, multiplication by the first phase can be expressed as: multiplication by exp(jθ) rather than directly multiplication by θ.

[0139] The following will introduce, in combination with Example 1 and Example 2, the specific content of the first device determining the second moment (this method can also be understood as the first device determining the first moment):

[0140] Example 1: The first device determines the time-frequency resources for receiving the second reference signal based on the configuration information of the second reference signal, and the first device receives the second reference signal on the time-frequency resources corresponding to the second reference signal, wherein the first device uses the moment when the second reference signal is received as the second moment.

[0141] For example, the first device may determine the time-frequency resource corresponding to the second reference signal based on the configuration information of the second reference signal indicated by the second information in step 301. The first device may receive the second reference signal on the time-frequency resource corresponding to the second reference signal. The first device uses the moment when the second reference signal is received as the second moment. The first device sends the first reference signal at the second moment. Specifically, the first device may use a technology such as multipath identification to determine multiple moments when the second reference signal arrives at the first device, and determine the earliest moment or the moment with the highest power (or energy, amplitude) as the second moment.

[0142] Example 2: The first device estimates / predicts the second time when the first device receives the second reference signal based on the time when the first device receives the third reference signal.

[0143] For example, before step 303, the method shown in FIG3 may further include: the second apparatus sending a third reference signal.

[0144] The first device receives the third reference signal, which comes from the second device. The first device estimates / predicts the time of receiving the second reference signal based on the time of receiving the third reference signal.

[0145] As an example, when a second device transmits a third reference signal, and the third reference signal reaches a first device via multiple transmission paths, the first device may select, from the multiple transmission paths, a time corresponding to the time of arrival at the first device according to a certain rule, as the time of arrival of the third reference signal at the first device. For example, the first device may select, from the multiple transmission paths, the time corresponding to the transmission path where the third reference signal reaches the first device earliest, as the time of arrival of the third reference signal at the first device; or, the first device may select, from the multiple transmission paths, the time corresponding to the transmission path where the signal power (or energy, or amplitude) of the third reference signal is maximized or the attenuation is minimized, as the time of arrival of the third reference signal at the first device.

[0146] It should be understood that the first device estimates / predicts the second time at which the first device receives the second reference signal based on the time at which the third reference signal is received. For example, assuming the third reference signal is configured in symbol a, the second reference signal is configured in symbol b, and the starting position of symbol b is T after the starting position of symbol a, or the ending position of symbol b is T after the ending position of symbol a. If the time at which the third reference signal arrives at the first device is determined to be T3, the second time can be estimated / predicted or determined to be T3+T.

[0147] As shown in Figure 4, it is assumed that the third reference signal and the second reference signal are configured for transmission in symbols with the same symbol index in adjacent time slots. An OFDM symbol includes a cyclic prefix (CP) portion and a payload portion. It is assumed that the third reference signal is transmitted at symbol 0 of the time slot, that is, the third reference signal is transmitted at the first symbol in a time slot. After receiving the third reference signal, the first device can determine the starting position of receiving the second reference signal.

[0148] The time interval between the second device sending the third reference signal and the second device sending the second reference signal is one time slot, that is, within a period of time, assuming that the relative positions of the first device and the second device do not change, the time between the second device sending the second reference signal to the first device receiving the second reference signal is the same as the time between the second device sending the third reference signal to the first device receiving the third reference signal. That is, the first device can determine the starting position of receiving the second reference signal based on the starting position of receiving the third reference signal. The first device can determine the time (for example, the second time) of receiving the second reference signal based on the time of receiving the third reference signal, and send the first reference signal at the second time. As shown in Figure 4, the starting position of the first device sending the first reference signal is aligned with the starting position corresponding to the first device receiving the second reference signal.

[0149] As shown in FIG4 , assuming that the first frequency domain sequence corresponding to the second reference signal sent by the second device on the second reference signal resource is a, b, c, d…, the frequency domain sequence corresponding to the first reference signal sent by the first device on the first reference signal resource (the same time-frequency resource as the second reference signal resource) is the first frequency domain sequence as a whole multiplied by e jθ , that is..., where e is a natural constant, j is an imaginary unit, and θ is a random first phase determined by the first device.

[0150] It should be understood that in Examples 1 and 2 above, the possibility of limited capabilities of the first device is taken into account. That is, a certain time difference may exist between the time the first device receives the second reference signal and the time it transmits the first reference signal. However, this time difference must be less than or equal to a certain threshold. This threshold is preset, predefined by a protocol or system, or determined based on the capabilities of the first device, and is not limited in this application.

[0151] Method 2: A first device sends a first reference signal at a first moment. A time interval between the first moment and a second moment is a first time interval. The second moment is a time when the first device receives the second reference signal, or the second moment is a time when the first device estimates / predicts that the second reference signal will be received. The first time interval is not zero.

[0152] Among them, the detailed introduction of how the first device determines the second moment can be referred to the specific description in the above method 1, which will not be repeated here.

[0153] Exemplarily, when the first moment is later than the second moment, the first time interval is a positive value; and when the first moment is earlier than the second moment, the first time interval is a negative value.

[0154] The first reference signal is determined according to the first phase, the first sequence and the first time interval.

[0155] It should be understood that the time interval between the first moment and the second moment is not zero, that is, the first moment when the first device transmits the first reference signal is different from the second moment when the first device receives the second reference signal. Considering the difference between the first moment and the second moment, in order to ensure the correlation between the first reference signal of the first device and the second reference signal reflected by the user associated with the first device, and to protect the perception information of the first device, an additional modulation signal can be introduced into the frequency domain sequence corresponding to the first reference signal. That is, the use of an additional modulation signal in the frequency domain is equivalent to shifting the first reference signal in the time domain. This allows the first reference signal transmitted by the first device to simulate the reflected signal corresponding to the second reference signal, even if the first device receives the second reference signal and transmits the first reference signal at different times.

[0156] As an example, it is assumed that the sequence of the first reference signal in the frequency domain is the second frequency domain sequence, and the signal mapped to the subcarrier k by the second frequency domain sequence is Ax k exp(-j2πf k T)exp(jθ). Where A is a complex constant (for example, 1), x k is the signal mapped on subcarrier k by the first frequency domain sequence (ie, the frequency domain sequence of the second reference signal), f k is the center frequency of subcarrier k, or fk =kf scs , f scs is the subcarrier spacing, T is the first time interval, and θ is the first phase.

[0157] As shown in Figure 5, assuming that the time when the first device sends the first reference signal is earlier than the time when the first device receives the second reference signal, where the first time interval is time T, the frequency domain sequence of the first reference signal sent by the first device can be changed so that the introduction of an additional modulation signal to the first reference signal in the frequency domain is equivalent to shifting the first reference signal in the time domain, as shown in Figure 5. The frequency domain sequence corresponding to the second reference signal sent by the second device is a, b, c, d, ..., and the frequency domain sequence corresponding to the first reference signal sent by the first device is:

[0158] As another example, it is assumed that the sequence of the first reference signal in the time domain is a second time domain sequence, and the second time domain sequence is the first time domain sequence cyclically shifted to the right by T / T s The sequence after the bit is multiplied by exp(jθ), where the first time domain sequence is the sequence of the second reference signal in the time domain, that is, the first time domain sequence is first cyclically shifted by T / T s bits, and then multiply each element in the shifted sequence by exp(jθ), where θ is the first phase. Where T is the first time interval, T s is the length of the code element, for example, 1 / (N IFFT f scs ), where N IFFT is the number of points for fast inverse Fourier transform in the frequency domain. s If it is not an integer, it can be rounded up or down. When T is less than zero, it can be understood that the second time domain sequence is the first time domain sequence cyclically shifted to the left by -T / T s The sequence after the bit is multiplied by exp(jθ). It should be understood that the above time domain sequence is the time domain sequence of the payload part in a symbol. The sequence of the CP part is adjusted accordingly based on the sequence of the payload part after the change.

[0159] It should be understood that, based on the introduction of the above-mentioned method 1 and method 2, in order to ensure that the first reference signal sent by the first device can interfere with the second reference signal reflected by the first device back to the second reference signal receiving end, thereby protecting the perception information of the first device, the time when the first device sends the first reference signal can be aligned with the time when the first device receives the second reference signal, thereby improving the correlation between the first reference signal and the second reference signal reflected back to the second reference signal receiving end; or, when there is a first time interval between the time when the first device sends the first reference signal and the time when the first device receives the second reference signal, introducing an additional modulation signal into the frequency domain sequence of the first reference signal is equivalent to shifting the first reference signal in the time domain, thereby improving the correlation between the first reference signal sent by the first device and the second reference signal reflected back to the second reference signal receiving end, thereby interfering with the perception information of the user associated with the first device, and effectively protecting the privacy of the user associated with the first device.

[0160] It should also be understood that in order to ensure the interference effect of the first reference signal sent by the first device on the perceived information of the user associated with the first device, and to reduce the perceived interference of the first reference signal on other users, the transmit power of the first reference signal sent by the first device may be further limited:

[0161] It should be understood that the first device sends the first reference signal according to the first power value. The first power value can be determined according to one or more of the following: the maximum transmit power of the first device, α1RSRP4+α210log(K)+A,

[0162] Wherein, α1 to α5 are configured or preconfigured coefficients greater than or equal to 0, RSRP4 is the received power of the fourth reference signal or the second reference signal, the fourth reference signal comes from the second device, K is used to indicate the bandwidth of the first reference signal, PL is the path loss between the first device and the receiving end of the second reference signal (for example, the second device, or other device), N' can be an integer configured, preconfigured, or predefined by the third device, or N' is The smallest integer of , c is the speed of light, B is the bandwidth of the first reference signal, D is the interference-allowed distance range of the first reference signal, D can be configured or preconfigured or predefined by a third device, and A and C are constants.

[0163] As an example, consider the limitation of the maximum transmit power Pmax of the first device, that is, the transmit power of the first reference signal sent by the first device is less than or equal to the maximum transmit power Pmax of the first device, that is, the first power value is less than or equal to the maximum transmit power of the first device.

[0164] As another example, consider that the first reference signal transmitted by the first device is used to simulate a reflection signal of the second reference signal by a user associated with the first device. Specifically, the transmit power of the first reference signal should be comparable to or similar to the receive power of the second reference signal received by the first device. Therefore, based on this consideration, the first power value can be determined based on the receive power of the fourth reference signal received by the first device.

[0165] The fourth reference signal is from the second device and may be the same reference signal as the third reference signal or a different reference signal, which is not limited in this application. The received power of the fourth reference signal is used by the first device to determine the transmit power of the first reference signal.

[0166] It should be understood that when the transmission power of the first reference signal sent by the first device is larger, the interference effect on the reflected signal of the second reference signal is better.

[0167] As another example, if the power of the first reference signal sent by the first device is too large, it may cause a large leakage in the delay power spectrum, which may cause the first reference signal to cause a large interference to the perception results of other users. As shown in Figure 6, the leakage of the first reference signal in the delay spectrum. It can be seen that when the transmission power of the first reference signal is too large, the second device will detect that the sidelobe energy of the first reference signal is too large, resulting in a situation where there is no reflecting object at the time delay. The receiving end of the second reference signal (such as the second device) mistakenly believes that there is an object, or causes the first reference signal to interfere with the perception information of the user at the time delay. Therefore, by considering that the first power value is less than or equal to

[0168] It should be understood that, based on the above introduction, the first power value may be the maximum value of the transmission power of the first device, α1RSRP4+α210log(K)+A, The first power value may be less than or equal to the maximum transmit power of the first device, α1RSRP4+α210log(K)+A, Alternatively, the first power value may be the maximum transmit power of the first device, α1RSRP4+α210log(K)+A, The minimum value in .

[0169] It should also be understood that the first device uses the maximum transmission power supported by the first device, α1RSRP4+α210log(K)+A and The transmission power of the first reference signal is determined so as to ensure the interference effect of the first reference signal on the perception information of the user associated with the first device, while reducing the interference of the first reference signal on the perception information of the users associated with other devices by controlling the transmission power of the first reference signal.

[0170] It should be noted that step 304 is decoupled from one or more of steps 301 to 303. Steps 301 to 303 are optional, meaning that steps 301 to 303 do not need to be performed. The first device may only perform step 304 to interfere with the perception information of the user associated with the first device by sending a first reference signal, thereby achieving privacy protection requirements for the user associated with the first device.

[0171] In conjunction with the method shown in FIG. 3 , a first device transmits a first reference signal, which is determined based on a sequence (e.g., a first sequence) and a first phase of a second reference signal. The time-frequency resources of the first reference signal are the same as those of the second reference signal. The first reference signal can interfere with the perception information of a user associated with the first device, thereby protecting the privacy of the perception information of the user associated with the first device in a wireless perception scenario and avoiding privacy leaks.

[0172] At the same time, the first device can send a first reference signal at a first moment, and the first moment is the moment when the first device receives the second reference signal, or the first device sends the first reference signal at a first moment, the time interval between the first moment and the second moment is not 0, and the second moment is the moment when the first device receives the second reference signal. The first device can introduce an additional modulation signal in the frequency domain sequence corresponding to the first reference signal, which is equivalent to shifting the first reference signal in the time domain, enhancing the correlation between the first reference signal and the second reference signal, and ensuring that the first reference signal can interfere with the perception information of the user associated with the first device, thereby realizing the privacy protection requirements of the user associated with the first device.

[0173] In addition, by further limiting the transmission power of the first reference signal sent by the first device, the interference of the first reference signal on the perception information of the user associated with the first device is reduced while ensuring the interference effect of the first reference signal on the perception information of other devices.

[0174] Based on the method shown in FIG3 , the method may further include the following steps before step 301:

[0175] 300. The first device and the third device perform mutual authentication.

[0176] It should be understood that mutual authentication between the first device and the third device enables the third device to confirm that the first device is a legitimate device within the area where the third device is deployed. Mutual authentication between the first device and the third device also enables the third device to protect the privacy of the user's associated information within the area where the third device is deployed.

[0177] It should also be understood that the third device and the second device may be the same device or different devices. Specifically, when the third device and the second device are the same device, taking the second device as an example, after mutual authentication between the first device and the second device, the first device is a legitimate device within the deployment area of ​​the second device, that is, the second device allows the first device to perform privacy protection on the perceived information of the user associated with the first device; when the third device and the second device are different devices, after mutual authentication between the first device and the third device, the first device is a legitimate device within the deployment area of ​​the third device, and the second device is a device within the deployment range of the third device. Similarly, the first device is a legitimate device within the deployment area of ​​the second device, and the second device allows the first device to perform privacy protection on the perceived information of the user associated with the first device.

[0178] Based on the method shown in FIG3 , after step 304, the method may further include the following steps:

[0179] 305. The fourth device receives the second reference signal and the first reference signal, and obtains perception information of the surrounding environment of the second device.

[0180] It should be understood that the fourth device may be the third device or the second device mentioned above, or other devices, which is not limited in this application.

[0181] For example, the fourth device acts as a receiving end device for the second reference signal, that is, the fourth device receives the second reference signal reflected or scattered by a user in the environment, as well as the first reference signal of the first device. The fourth device determines the perception information of the environment surrounding the second device based on the reflected or scattered second reference signal. When determining the perception information of the user associated with the first device, the fourth device determines the perception information of the user associated with the first device based on the second reference signal reflected or scattered by the user associated with the first device and the first reference signal transmitted by the first device.

[0182] It should be understood that when the second device uses a second reference signal to wirelessly sense the surrounding environment through self-transmission and other-reception, the fourth device is a different device from the second device, and the fourth device determines the perception information of the surrounding environment based on the second reference signal reflected or scattered by the user. When the second device needs to obtain perception information of the surrounding environment, when the fourth device and the second device are both terminal devices, the fourth device can send the perception information to the second device via a sidelink; when the fourth device is a network device and the second device is a terminal device, the fourth device can send the perception information to the second device via a downlink. When the fourth device is a terminal device and the second device is a network device, the fourth device can send the perception information to the second device via an uplink.

[0183] When the fourth device and the second device are the same device, the second device determines the perception information of the surrounding environment based on the received second reference signal reflected or scattered by the user in the surrounding environment and the received first reference signal.

[0184] The following will be exemplified by the case where the second device uses the second reference signal to wirelessly sense the surrounding environment in a self-transmitting and self-receiving manner, that is, the fourth device and the second device are the same device, combined with the scenario of Figure 2 above.

[0185] As an example, combined with the scenario shown in Figure 2 above, assuming that the second device is UE#0 in Figure 2, UE#0 sends a second reference signal, and UE#0 receives the second reference signal reflected or reflected back from the user in the surrounding environment.

[0186] As shown in (1) in Figure 7, assuming that user #1, user #2 and user #3 have no privacy protection requirements, the UE #0 sends a second reference signal and receives the second reference signal reflected by user #1, user #2 and user #3 in the surrounding environment. UE #0 can detect three peaks in the delay domain based on the reflected second reference signal, where the three peaks correspond to the delays of user #1, user #2 and user #3 or the equivalent distances between user #1, user #2 and user #3 and UE #0, as well as the reflection coefficients of user #1, user #2 and user #3. UE #0 sends the second reference signal to the surrounding environment on multiple time domain resources, and UE #0 can determine how the reflection coefficients of user #1, user #2 and user #3 change over time. The reflection coefficient is generally a complex number, that is, the reflection coefficient includes amplitude and phase information. Among them, when the user makes micro-movements (for example, breathing, heartbeat, talking, etc.), it can cause the phase change in the reflection coefficient. UE#0 can recover the person's breathing frequency, heartbeat frequency, speech content and other information from the phase information.

[0187] As shown in (2) of Figure 7, it is assumed that user #1 has a privacy protection requirement, and user #2 and user #3 do not have a privacy protection requirement. The UE #0 sends a second reference signal and receives the second reference signal reflected by user #1, user #2 and user #3 in the surrounding environment. At the same time, UE #0 receives a reference signal (such as a first reference signal) sent by UE #1 associated with user #1. Since the base sequence of the first reference signal is the same as that of the second reference signal, the first reference signal simulates the echo of the second reference signal through the user associated with UE #1. Among them, UE #0 determines the delay spectrum corresponding to user #2 and user #3 based on the received reflected second reference signal, and determines the relevant information corresponding to the user based on the reflection coefficient, which is similar to (1) in Figure 7 above. When UE #0 determines the delay spectrum corresponding to user #1 based on the second reference signal and the first reference signal reflected by user #1, since the first reference signal simulates the transmission of the second reference signal through the echo of user #1, UE #0 determines that the peak value corresponding to the delay spectrum of user #1 is h2, and h2 is greater than the peak value h1 corresponding to the time spectrum determined by the second reference signal of the echo of user #1. Because the first reference signal is generated based on a random phase (e.g., the first phase), the first reference signal further causes the phase information corresponding to the reflection coefficient to vary at any time, thereby interfering with UE#0's ability to obtain information related to user#1, thereby protecting the privacy of user#1. Furthermore, the first reference signal has only one peak in its delay profile, and thus does not affect the perceived information of other users (e.g., user#2 and user#3).

[0188] It can be understood that some optional features in the various embodiments of the present application may not depend on other features in certain scenarios, and may also be combined with other features in certain scenarios, without limitation.

[0189] It can also be understood that the solutions in the various embodiments of the present application can be reasonably combined and used, and the explanations or descriptions of the various terms appearing in the embodiments can be referenced or explained with each other in the various embodiments, without limitation to this.

[0190] It can also be understood that in the above-mentioned various method embodiments, the methods and operations implemented by the device (first device, second device) can also be implemented by components of the device (such as chips or circuits) without limitation.

[0191] Corresponding to the methods provided in the above method embodiments, embodiments of the present application also provide corresponding apparatuses, which include modules for executing the corresponding methods in the above method embodiments. The modules may be software, hardware, or a combination of software and hardware. It is understood that the technical features described in the above method embodiments are also applicable to the following apparatus embodiments.

[0192] Referring to Figure 8 , as an example, Figure 8 is a schematic diagram of a communication device 800 provided in an embodiment of the present application. Device 800 includes a transceiver unit 810 and a processing unit 820. Transceiver unit 810 can be used to implement corresponding communication functions. Transceiver unit 810 can also be referred to as a communication interface or communication unit. Processing unit 820 can be used to process data or information.

[0193] Optionally, the device 800 further includes a storage unit, which can be used to store instructions and / or data. The processing unit 820 can read the instructions and / or data in the storage unit so that the device implements the aforementioned various method embodiments.

[0194] In one possible design, the device 800 can be used to execute the actions performed by the first device in each of the above method embodiments. In this case, the device 800 can be the first device, or can be a component of the first device. The transceiver unit 810 is used to execute the transceiver-related operations of the first device in the above method embodiments, and the processing unit 820 is used to execute the processing-related operations of the first device in the above method embodiments.

[0195] For example, the transceiver unit 810 is used to send a first reference signal, the frequency resources corresponding to the first reference signal are the same as the time-frequency resources corresponding to the second reference signal, the first reference signal is determined based on the first phase and the first sequence, and the first sequence is the sequence of the second reference signal, wherein the second reference signal is a reference signal used to obtain perception information, and the first reference signal is a reference signal used to interfere with perception information or protect privacy.

[0196] It should be understood that the transceiver unit is also used to perform the receiving and sending processing of the first device in FIG. 3 as described above.

[0197] In a possible implementation, the communication device further includes a processing unit 820, which is further configured to perform other processing except receiving and sending in the first device in FIG. 3 .

[0198] In one possible design, the device 800 can be used to execute the actions performed by the second device in each of the above method embodiments. In this case, the device 800 can be a terminal device or a network device, or can be a component of a terminal device or a network device. The transceiver unit 810 is used to execute the transceiver-related operations of the second device in the above method embodiments, and the processing unit 820 is used to execute the processing-related operations of the second device in the above method embodiments.

[0199] For example, the transceiver unit 810 is used to receive a first reference signal from a first device, the time-frequency resources corresponding to the first reference signal are the same as the time-frequency resources corresponding to the second reference signal, the first reference signal is determined based on the first phase and the first sequence, and the first sequence is the sequence of the second reference signal, wherein the second reference signal is a reference signal for obtaining perception information, and the first reference signal is a reference signal for interfering with perception information or protecting privacy.

[0200] It should be understood that the transceiver unit is also used to perform the receiving and sending processing in the second device in FIG. 3 as described above.

[0201] In a possible implementation, the communication device further includes a processing unit, which is further configured to perform other processing except receiving and sending in the second device in FIG. 3 .

[0202] It should be understood that the device 800 here is embodied in the form of a functional unit. The term "unit" here can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing at least one software or firmware program, a combined logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 800 can be specifically the first device in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the first device in the above-mentioned method embodiments.

[0203] The apparatus 800 of each of the above-described solutions has the function of implementing the corresponding steps performed by the first apparatus / second apparatus in the above-described method. The functions can be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes at least one module corresponding to the above-described functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment.

[0204] In addition, the transceiver unit 810 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

[0205] It should be noted that the device in FIG8 can be a device in the aforementioned embodiment, or it can be a chip or chip system, such as a system on chip (SoC). The transceiver unit can be an input / output circuit or a communication interface; the processing unit can be a processor, microprocessor, or integrated circuit integrated on the chip. This is not limited here.

[0206] Referring to Figure 9 , as an example, Figure 9 is a schematic diagram of another communication device 900 provided in an embodiment of the present application. The device 900 includes a processor 910, which is coupled to a memory 920. Optionally, the device 900 also includes a memory 920. The memory 920 is configured to store computer programs or instructions and / or data. The processor 910 is configured to execute the computer programs or instructions stored in the memory 920, or read data stored in the memory 920, to perform the methods described in the above method embodiments.

[0207] Optionally, there is at least one processor 910.

[0208] Optionally, there is at least one memory 920.

[0209] Optionally, the memory 920 is integrated with the processor 910 or provided separately.

[0210] Optionally, as shown in Figure 9, the apparatus 900 further includes a transceiver 930, which is configured to receive and / or transmit signals. For example, the processor 910 is configured to control the transceiver 930 to receive and / or transmit signals.

[0211] As a solution, the device 900 is used to implement the operations performed by the device in each of the above method embodiments.

[0212] For example, the processor 910 is configured to execute computer programs or instructions stored in the memory 920 to implement the relevant operations of the apparatus in the above various method embodiments. For example, the method executed by the apparatus (first apparatus, second apparatus) in the embodiment shown in FIG3 .

[0213] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0214] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0215] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0216] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0217] 10 , as an example, is a schematic diagram of a chip system 1000 provided in accordance with an embodiment of the present application. The chip system 1000 (or also referred to as a processing system) includes a logic circuit 1010 and an input / output interface 1020 .

[0218] Logic circuit 1010 may be a processing circuit in chip system 1000. Logic circuit 1010 may be coupled to a storage unit and call instructions in the storage unit, so that chip system 1000 can implement the methods and functions of various embodiments of the present application. Input / output interface 1020 may be an input / output circuit in chip system 1000, outputting information processed by chip system 1000 or inputting data or signaling information to be processed into chip system 1000 for processing.

[0219] Specifically, for example, if the chip system 1000 is installed in the first device, the logic circuit 1010 is coupled to the input / output interface 1020 , and the input / output interface 1020 can input the wake-up signal to the logic circuit 1010 for processing.

[0220] As a solution, the chip system 1000 is used to implement the operations performed by the first device in each of the above method embodiments.

[0221] For example, the logic circuit 1010 is used to implement the processing-related operations performed by the first device in the above method embodiment; the input / output interface 1020 is used to implement the sending and / or receiving-related operations performed by the first device in the above method embodiment.

[0222] An embodiment of the present application further provides a computer-readable storage medium on which computer instructions for implementing the methods executed by the apparatus in the above-mentioned method embodiments are stored.

[0223] For example, when the computer program is executed by a computer, the computer can implement the method performed by the first device in each embodiment of the above method.

[0224] For another example, when the computer program is executed by a computer, the computer can implement the method performed by the second device in each embodiment of the above method.

[0225] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed by a computer, implement the method performed by the first device or the second device in each of the above method embodiments.

[0226] An embodiment of the present application further provides a communication system, which includes the first device and the second device in the above embodiments.

[0227] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0228] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as at least two units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0229] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes at least one computer instruction. When the computer program instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer can be a personal computer, a server, or a network device, etc. The computer instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes at least one available medium integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)). For example, the aforementioned available medium includes, but is not limited to, various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0230] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A perception method, characterized in that: include: The first device sends a first reference signal, where the time-frequency resource corresponding to the first reference signal is the same as the time-frequency resource corresponding to the second reference signal, the first reference signal is determined based on a first phase and a first sequence, and the first sequence is the sequence of the second reference signal. The second reference signal is a reference signal used to obtain perception information, and the first reference signal is a reference signal used to interfere with the perception information or protect privacy.

2. The method according to claim 1, characterized in that The first device sending the first reference signal includes: The first device sends the first reference signal at a first moment, The first moment is the same as the moment when the first device receives the second reference signal, or the first moment is the moment when the first device estimates or predicts the reception of the second reference signal, or the first moment is determined based on the moment when the first device receives a third reference signal, and the third reference signal comes from the second device.

3. The method according to claim 1 or 2, characterized in that The first reference signal is determined by multiplying the first sequence by the first phase.

4. The method according to claim 1, wherein The first device sending the first reference signal includes: The first device sends the first reference signal at a first time, a time interval between the first time and a second time is a first time interval, the second time is a time when the first device receives the second reference signal, or the second time is a time when the first device estimates or predicts that the second reference signal is received, or the second time is determined based on a time when the first device receives a third reference signal, and the third reference signal comes from the second device; The first reference signal is determined according to the first phase, the first sequence and the first time interval, and the first time interval is not zero.

5. The method according to claim 4, characterized in that The first sequence includes a first frequency sequence, the sequence of the first reference signal in the frequency domain is a second frequency domain sequence, and the signal mapped to the subcarrier k by the second frequency domain sequence is Ax k exp(-j2πf k T)exp(jθ), Where A is a complex constant, x k is a signal mapped to subcarrier k by the first frequency domain sequence, the first frequency domain sequence is a sequence of the second reference signal in the frequency domain, and f k is the center frequency of the subcarrier k, or f k =kf scs , f scs is the subcarrier spacing, T is the first time interval, and θ is the first phase.

6. The method according to any one of claims 1 to 5, characterized in that The first device sending the first reference signal includes: The first apparatus sends the first reference signal according to a first power value, where the first power value is determined according to one or more of the following: The maximum transmission power of the first device, α1RSRP4+α210log(K)+A, Among them, α1 to α5 are configured or pre-configured coefficients greater than or equal to 0, RSRP4 is the received power of the fourth reference signal, the fourth reference signal comes from the second device, K is used to indicate the bandwidth of the first reference signal, PL is the path loss between the first device and the receiving end of the second reference signal, N′ is an integer, D is the interference allowable distance range of the first reference signal, and A and C are constants.

7. The method according to claim 6, characterized in that The first power value is a minimum value of one or more of the following: The maximum transmission power of the first device, α1RSRP4+α210log(K)+A, 8. The method according to any one of claims 1 to 7, characterized in that Before the first device sends the first reference signal, the method further includes: The first device sends first information, where the first information indicates that a user associated with the first device has a privacy protection requirement for perception information, and / or the first information instructs the first device to send the first reference signal.

9. The method according to any one of claims 1 to 8, characterized in that Before the first device sends the first reference signal, the method further includes: The first device receives second information, where the second information indicates configuration information of the second reference signal, and the configuration information of the second reference signal includes information about reference signal resources occupied by the second reference signal.

10. The method according to claim 8 or 9, characterized in that Before the first device sends the first information, the method further includes: The first device performs authentication with a third device, where the authentication is used to determine that the first device is capable of performing privacy protection on perception information of a user associated with the first device.

11. The method according to any one of claims 1 to 10, characterized in that Before the first device sends the first reference signal, the method further includes: The first device receives configuration information of the second reference signal, where the configuration information of the second reference signal includes time-frequency resources corresponding to the second reference signal.

12. The method according to any one of claims 9 to 11, characterized in that The second information indicates that the second reference signal is used by the second device to collect and / or estimate biological sign data of a user within a coverage area of the second device.

13. A sensing method, characterized in that: include: The second device receives a first reference signal from the first device, where the time-frequency resource corresponding to the first reference signal is the same as the time-frequency resource corresponding to the second reference signal, the first reference signal is determined based on a first phase and a first sequence, and the first sequence is the sequence of the second reference signal. The second reference signal is a reference signal used to obtain perception information, and the first reference signal is a reference signal used to interfere with the perception information or protect privacy.

14. The method according to claim 13, wherein: The sequence of the first reference signal is determined by multiplying the first sequence by the first phase.

15. The method according to claim 13, characterized in that The transmit power of the first reference signal is a first power value, where the first power value is determined according to one or more of the following: The maximum transmission power of the first device, α1RSRP4+α210log(K)+A, Among them, α1 to α5 are configured or pre-configured coefficients greater than or equal to 0, RSRP4 is the received power of the fourth reference signal, the fourth reference signal comes from the second device, K is used to indicate the bandwidth of the first reference signal, PL is the path loss between the first device and the receiving end of the second reference signal, N′ is an integer, D is the interference allowable distance range of the first reference signal, and A and C are constants.

16. The method according to claim 15, characterized in that The first power value is a minimum value of one or more of the following: The maximum transmission power of the first device, α1RSRP4+α210log(K)+A, 17. The method according to any one of claims 13 to 16, characterized in that Before the second device receives the first reference signal from the first device, the method further includes: The second device receives first information from the first device, where the first information indicates that a user associated with the first device has a privacy protection requirement for perception information, and / or the first information instructs the first device to send the first reference signal.

18. The method according to any one of claims 13 to 17, characterized in that The method further comprises: The second device sends second information, where the second information indicates configuration information of the second reference signal, and the configuration information of the second reference signal includes information of reference signal resources occupied by the second reference signal.

19. The method according to claim 17 or 18, characterized in that Before the second device receives the first reference signal from the first device, the method further includes: The second device performs authentication with the first device, where the authentication is used to determine that the first device is capable of performing privacy protection on perception information of a user associated with the first device.

20. The method according to any one of claims 10 to 14, characterized in that Before the second device receives the first reference signal from the first device, the method further includes: The second device sends configuration information of the second reference signal, where the configuration information of the second reference signal includes time-frequency resources corresponding to the second reference signal.

21. The method according to any one of claims 18 to 20, characterized in that The second information indicates that the second reference signal is used by the second device to collect and / or estimate biological sign data of a user within a coverage area of the second device.

22. A communication device, characterized in that: The device comprises a processor, wherein the processor is configured to execute a computer program or instruction stored in a memory, so that the device performs the method according to any one of claims 1 to 12, or performs the method according to any one of claims 13 to 21.

23. The device according to claim 22, characterized in that The device further comprises the memory and / or the communication interface, wherein the communication interface is coupled to the processor. The communication interface is used to input and / or output information.

24. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program or instructions, which, when executed on a communication device, causes the communication device to execute the method according to any one of claims 1 to 12, or the method according to any one of claims 13 to 21.

25. A computer program product, characterized in that The computer program product comprises a computer program or instructions for executing the method according to any one of claims 1 to 12, or a computer program or instructions for executing the method according to any one of claims 13 to 21.

26. A chip, characterized in that: The chip is coupled to a memory and is configured to read and execute program instructions stored in the memory to implement the method according to any one of claims 1 to 21.

Images