Wireless sensing method, apparatus, network-side device, and terminal

Abstract

The application discloses a wireless sensing method, device, network side equipment and terminal, and belongs to the technical field of communication. The wireless sensing method comprises the following steps: a first device backscatters a sensing signal to a wireless sensing signal receiving end, wherein the sensing signal comes from a wireless sensing signal sending end.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a wireless sensing method, apparatus, network-side equipment, and terminal. Background Technology

[0002] In related technologies, sensing and communication systems are typically designed separately and occupy different frequency bands. However, due to the widespread deployment of millimeter-wave and massive MIMO technologies, communication signals in future wireless communication systems often possess high resolution in both the time and angular domains, making it possible to achieve high-precision sensing using these signals. Therefore, it is best to jointly design sensing and communication systems, enabling them to share the same frequency band and hardware, thereby improving frequency efficiency and reducing hardware costs. This has spurred research into Integrated Sensing and Communication (ISAC).

[0003] However, in the ISAC scenario, sensing devices using traditional radio architectures include power-consuming radio frequency links, such as oscillators, mixers, and digital-to-analog converters. This results in larger sensing device sizes and shorter battery life, which limits the layout of sensing devices in ISAC and consequently restricts the sensing performance of the ISAC system. Summary of the Invention

[0004] This application provides a wireless sensing method, apparatus, network-side device, and terminal that can improve the sensing performance of the ISAC system.

[0005] In a first aspect, a wireless sensing method is provided, the method comprising:

[0006] The first device backscatters the sensing signal to the wireless sensing signal receiver, wherein the sensing signal originates from the wireless sensing signal transmitter.

[0007] Secondly, a wireless sensing device is provided for use in a first device, the device comprising:

[0008] A backscattering module is used to backscatter the sensing signal to the wireless sensing signal receiver, wherein the sensing signal originates from the wireless sensing signal transmitter.

[0009] Thirdly, a wireless sensing method is provided, the method comprising:

[0010] The wireless sensing signal receiver acquires second information, which includes: sensing requirement information, and / or sensing signal related configuration information corresponding to the sensing requirement information;

[0011] The wireless sensing signal receiver measures the sensing signal sent by the wireless sensing signal transmitter, which is at least partially backscattered by the first device, according to the sensing signal related configuration information, so as to obtain the target measurement quantity.

[0012] The wireless sensing signal receiver determines the target sensing result based on the target measurement, or sends the target measurement.

[0013] Fourthly, a wireless sensing device is provided, applied to a wireless sensing signal receiving end, the device comprising:

[0014] The first acquisition module is used to acquire second information, the second information including: perception demand information, and / or, perception signal related configuration information corresponding to the perception demand information;

[0015] The measurement module is used to measure the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, so as to obtain the target measurement quantity.

[0016] An execution module is used to determine the target perception result based on the target measurement, or to send the target measurement.

[0017] Fifthly, a wireless sensing method is provided, the method comprising:

[0018] The second device acquires sensing demand information;

[0019] The second device sends second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver. The second information includes: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information.

[0020] The second device acquires at least one of a target measurement quantity and a target perception result, wherein the target measurement quantity is a measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device, and the target perception result is determined based on the target measurement quantity.

[0021] Sixthly, a wireless sensing device is provided for use in a second device, the device comprising:

[0022] The second acquisition module is used to acquire perceived demand information;

[0023] The second transmitting module is used to transmit second information to at least one of the wireless sensing signal transmitting end and the wireless sensing signal receiving end, wherein the first information includes: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information;

[0024] The third acquisition module is used to acquire at least one of a target measurement quantity and a target perception result, wherein the target measurement quantity is the measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device, and the target perception result is determined based on the target measurement quantity.

[0025] In a seventh aspect, a wireless sensing system is provided, comprising: a first device, a wireless sensing signal transmitter, and a wireless sensing signal receiver;

[0026] At least one of the wireless sensing signal transmitter and the wireless sensing signal receiver is used to acquire second information, the first information including: sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information;

[0027] The wireless sensing signal transmitter is used to determine the sensing signal-related configuration information based on the sensing requirement information, and to transmit the sensing signal based on the sensing signal-related configuration information; or, the wireless sensing signal transmitter is used to transmit the sensing signal based on the acquired sensing signal-related configuration information.

[0028] The first device is used to backscatter the sensed signal;

[0029] The wireless sensing signal receiver is used to measure the sensing signal transmitted by the wireless sensing signal transmitter, which is at least partially backscattered by the first device, in order to obtain the target measurement quantity.

[0030] Eighthly, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the third aspect.

[0031] A ninth aspect provides a terminal, including a processor and a communication interface, wherein the communication interface is used to acquire second information, the second information including: sensing demand information, and / or sensing signal related configuration information corresponding to the sensing demand information; the communication interface is further used to measure a sensing signal transmitted by a wireless sensing signal transmitter and at least partially backscattered by a first device according to the sensing signal related configuration information, so as to obtain a target measurement quantity; the processor is used to determine a target sensing result according to the target measurement quantity, or to transmit the target measurement quantity.

[0032] In a tenth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the third or fifth aspect.

[0033] Eleventhly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to acquire second information, the second information including: sensing demand information, and / or sensing signal related configuration information corresponding to the sensing demand information; the communication interface is further used to measure a sensing signal transmitted by a wireless sensing signal transmitter and at least partially backscattered by a first device according to the sensing signal related configuration information, so as to obtain a target measurement quantity; the processor is used to determine a target sensing result according to the target measurement quantity, or to transmit the target measurement quantity;

[0034] or,

[0035] The communication interface is used to acquire sensing requirement information and send second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver. The second information includes: the sensing requirement information and / or sensing signal related configuration information corresponding to the sensing requirement information. The communication interface is also used to acquire at least one of a target measurement quantity and a target sensing result. The target measurement quantity is a measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter, which is at least partially backscattered by the first device. The target sensing result is determined based on the target measurement quantity.

[0036] In a twelfth aspect, a wireless sensing system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the wireless sensing method as described in the third aspect, and the network-side device is configured to perform the steps of the wireless sensing method as described in the fifth aspect; or, the network-side device is configured to perform the steps of the wireless sensing method as described in both the third and fifth aspects.

[0037] In a thirteenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fifth aspect.

[0038] In a fourteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the method as described in the first aspect, or the method as described in the third aspect, or the method as described in the fifth aspect.

[0039] In a fifteenth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the wireless sensing method as described in the first, third, or fifth aspect.

[0040] In this embodiment, the first device backscatters the sensing signal to the wireless sensing signal receiver, wherein the sensing signal originates from the wireless sensing signal transmitter. Thus, by utilizing the backscattering function of the first device, at least a portion of the sensing signal transmitted by the wireless sensing signal transmitter is backscattered to the wireless sensing signal receiver, providing an additional sensing path for wireless sensing. Furthermore, the first device with backscattering capability does not require a power-consuming radio frequency link, thus exhibiting characteristics such as small size and low power consumption. Compared to the wireless sensing signal transmitter and receiver, it is easier to deploy in an ISAC system to improve the sensing performance of the ISAC system. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a wireless communication system that can be applied to the embodiments of this application;

[0042] Figure 2 This is a flowchart of the first wireless sensing method provided in the embodiments of this application;

[0043] Figure 3a This is one of the schematic diagrams of a wireless sensing system applying the wireless sensing method provided in the embodiments of this application;

[0044] Figure 3b This is a second schematic diagram of a wireless sensing system applying the wireless sensing method provided in the embodiments of this application;

[0045] Figure 3c This is the third schematic diagram of a wireless sensing system applying the wireless sensing method provided in the embodiments of this application;

[0046] Figure 4 This is a flowchart of the second wireless sensing method provided in the embodiments of this application;

[0047] Figure 5 This is a flowchart of the third wireless sensing method provided in the embodiments of this application;

[0048] Figure 6This is one of the information interaction diagrams in a wireless sensing method provided in this application embodiment;

[0049] Figure 7 This is the second schematic diagram of information interaction in a wireless sensing method provided in this application embodiment;

[0050] Figure 8 This is a schematic diagram of the structure of the first wireless sensing device provided in the embodiments of this application;

[0051] Figure 9 This is a schematic diagram of the structure of the second wireless sensing device provided in the embodiments of this application;

[0052] Figure 10 This is a schematic diagram of the structure of the third wireless sensing device provided in the embodiments of this application;

[0053] Figure 11 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0054] Figure 12 This is a schematic diagram of the structure of a terminal provided in an embodiment of this application;

[0055] Figure 13 This is a schematic diagram of the structure of a network-side device provided in an embodiment of this application;

[0056] Figure 14 This is a schematic diagram of another network-side device provided in an embodiment of this application. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0058] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0059] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0060] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment 12 may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment 12 may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), Binding Support Function (BSF), and Application Function. Function (AF), etc. It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment.

[0061] Firstly, in recent decades, wireless communication and radar sensing (C&S) have been developing in parallel, but with limited overlap. They share many commonalities in signal processing algorithms, equipment, and to some extent, system architecture. In recent years, the coexistence, cooperation, and joint design of these two systems have attracted increasing attention from researchers.

[0062] Early research extensively explored the coexistence of communication and radar systems, focusing on developing effective interference management techniques to enable two separately deployed systems to operate smoothly without interfering with each other. While radar and communication systems may be located in the same place, or even physically integrated, they transmit two different signals in the time / frequency domain. They cooperate by sharing the same resources to minimize interference when operating simultaneously. Corresponding measures include beamforming, cooperative spectrum sharing, primary and secondary spectrum sharing, and dynamic coexistence. However, effective interference cancellation typically places stringent requirements on node mobility and information exchange between nodes, thus limiting practical improvements in spectral efficiency. Since interference in coexisting systems arises from the transmission of two independent signals, it is natural to ask whether we can simultaneously use a single transmitted signal for both communication and radar sensing. Radar systems often use specially designed waveforms, such as short pulses and chirps, to achieve high-power radiation and simplify receiver processing. However, these waveforms are not essential for radar detection; passive radar or passive sensing, which uses different radio signals as sensing signals, is a good example.

[0063] Machine learning, particularly deep learning, has further enhanced the potential of using non-dedicated radio signals for radar sensing. With these technologies, traditional radar is evolving towards more general wireless sensing. Here, wireless sensing can broadly refer to retrieving information from received radio signals, rather than communication data modulated onto signals at the transmitter. For wireless sensing related to target location, common signal processing methods can be used to estimate dynamic parameters such as target signal reflection delay, angle of arrival (AOA), angle of departure (AOD), and Doppler. For sensing target physical characteristics, this can be achieved by measuring the inherent pattern signals of devices, objects, and living organisms. These two sensing methods can be referred to as sensing parameter estimation and pattern recognition, respectively. In this sense, wireless sensing refers to more general sensing technologies and applications using radio signals.

[0064] Integrated Sensing and Communication (ISAC) has the potential to integrate wireless sensing into large-scale mobile networks, referred to here as Perceptive Mobile Networks (PMNs). PMNs can evolve from current 5G mobile networks and are expected to become ubiquitous wireless sensing networks while providing stable, high-quality mobile communication services. They can be built on top of existing mobile network infrastructure without requiring significant changes to network structure and equipment. This will unlock the full potential of mobile networks and avoid the high infrastructure costs of building new wide-area wireless sensing networks separately. With expanded coverage, the integrated communication and sensing capabilities are expected to enable many new applications. Perceptive Mobile Networks can simultaneously provide communication and wireless sensing services, and due to their large broadband coverage and robust infrastructure, they have the potential to become a ubiquitous wireless sensing solution. Their coordinated communication and sensing capabilities will improve the productivity of our society and help foster a large number of new applications that existing sensor networks cannot effectively realize. Some early work on passive sensing using mobile signals has already demonstrated its potential. Examples include traffic monitoring, weather forecasting, and rainfall remote sensing based on Global System for Mobile Communications (GSM) radio signals. Sensing mobile networks can be widely applied to communication and sensing in transportation, communication, energy, precision agriculture, and security sectors, where existing solutions are either infeasible or inefficient. It can also provide complementary sensing capabilities to existing sensor networks, featuring unique day / night operation and the ability to penetrate fog, foliage, and even solid objects. Some common sensing services are shown in Table 1 below:

[0065] Table 1

[0066]

[0067] However, in the ISAC system of related technologies, a large number of wireless sensing signal transmitters and receivers need to be deployed so that the wireless sensing signal receivers can determine the sensing measurement quantity and sensing result based on the sensing signals sent by the wireless sensing signal transmitters. The wireless sensing signal transmitters and receivers include power-consuming radio frequency links, which contain oscillators, mixers and digital-to-analog converters, etc. This results in a large size of sensing devices and a short battery life, which limits the layout of sensing devices in ISAC and thus makes the sensing performance of ISAC system low.

[0068] In the wireless sensing method proposed in this application embodiment, at least a portion of the signal transmitted by the wireless sensing signal transmitter can be backscattered by a first device with low power consumption and small size to provide a new sensing path or even new sensing auxiliary information, thereby improving the sensing performance of the ISAC system.

[0069] Secondly, among related technologies, low-power, low-complexity backscatter communication (BSC) technology is a simple technique that relies on passive reflection and modulation of incident radio frequency (RF) waves. In recent years, driven by advancements in consumer electronics, 5G communication technology, and big data analytics supported by cloud computing, the rapid growth of the Internet of Things (IoT) has attracted significant attention from industry and academia. One of the major open challenges facing the IoT is the limited network lifespan due to the large number of IoT devices being powered by batteries with limited capacity. BSC technology has emerged as a promising approach to addressing this challenge.

[0070] Specifically, traditional radio architectures have power-consuming radio frequency (RF) links, including oscillators, mixers, and digital-to-analog converters. This results in large device sizes and significantly limits the battery life of IoT devices. In contrast, a backscatter node has no active RF components, allowing the hardware to have extremely low power consumption (e.g., 10μW), facilitating large-scale deployment in a variety of flexible scenarios, even implantation within the body.

[0071] Over the past 20 years, point-to-point BSC technology has been widely used in Radio Frequency Identification (RFID) applications. Passive RFID tags can report their IDs to readers that query them in the near field (typically a few centimeters to a meter). In its early stages, the Internet of Things (IoT) primarily consisted of RFID devices used for logistics and inventory management. However, the future 6G IoT is expected to connect tens of billions of devices, performing more complex and multifunctional tasks and generating a global impact. This requires communication capabilities and ranges (tens of meters) between IoT nodes far exceeding those of traditional RFID, which only supports bursty and low-rate transmissions (transmitting only a few pre-written bytes of ID sequence) within a few meters. Traditional RFID communication distances are on the order of meters, while next-generation BSC communication distances are generally expected to reach the order of kilometers; traditional RFID uses binary modulation, with communication rates typically not exceeding 640 Kbps; next-generation BSCs can use higher-order modulation, achieving communication rates of at least 10 Mbps, or even 2 Gbps. Based on existing BSC theory, and utilizing advanced communication technologies such as small cellular networks, full-duplex, multi-antenna communication, massive access, and wireless power transfer, as well as the manufacture of miniature radios (such as button-sized radios) and low-power electronic devices, the above goals can be achieved. In summary, the continuous development of the Internet of Things (IoT) provides many promising application scenarios for BSC technology, making it a hot research area in recent years.

[0072] Sensing integration can spawn a series of new 6G applications. Besides the typical sensing use cases listed in Table 1, sensing integration based on low-power communication devices will also become an important application scenario for 6G. In this application embodiment, wireless sensing based on Radio Frequency Identification (RFID) and Backscatter Communications (BSC) technologies, compared to device-free wireless sensing in related technologies, can acquire additional sensing target information while achieving basic sensing functions, thus potentially further enhancing sensing / sensing integration performance. Due to the advantages of RFID and backscatter communication—low cost, low power consumption, and ease of large-scale deployment—RFID / backscatter-based sensing and sensing integration are expected to be widely used in 6G. For example, in vehicle-to-everything (V2X) networks, roadside units (RSUs) with sensing capabilities can communicate with vehicles on the road by transmitting and receiving sensing integration signals, simultaneously completing vehicle positioning, speed measurement, and trajectory tracking. When RFID or backscatter tags are installed on vehicles, the tags can provide additional auxiliary information such as vehicle ID and current vehicle status. By receiving reflected signals from tags, RSUs can achieve high-precision vehicle positioning, speed measurement, and trajectory tracking, while also accurately identifying and distinguishing different vehicles on the road, thus expanding sensing capabilities. However, key technologies in RFID-based wireless sensing, such as tag-based integrated sensing waveform design, frame structure design, and sensing scheme and algorithm design, are problems that need to be researched and solved.

[0073] This application provides a wireless sensing scheme based on the backscattering function of a first device, so that the first device can be used for wireless sensing.

[0074] The wireless sensing method, apparatus, network-side device, and terminal provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0075] Please see Figure 2The first wireless sensing method provided in this application embodiment can be executed by a first device, which has a backscatter function. For example, the first device may include devices with backscatter function (or backscatter function) such as radio frequency identification (RFID) tags and backscatter tags. These are not exhaustive examples. For ease of explanation, the first device in the following embodiments is a tag (which may be a single tag or a tag array). Of course, in addition to tags, the first device may also include other devices with backscatter function, and may even include other sensor devices, etc., which are not specifically limited here.

[0076] like Figure 2 As shown, the first wireless sensing method may include the following steps:

[0077] Step 201: The first device backscatters the sensing signal to the wireless sensing signal receiver, wherein the sensing signal comes from the wireless sensing signal transmitter.

[0078] In implementation, the first device may have an antenna, and the signal acquisition range of the antenna is greater than or equal to the distance between the first device and the wireless sensing signal transmitter. This enables the first device to use its antenna to acquire the sensing signal transmitted by the wireless sensing signal transmitter (i.e., the first device is located within the coverage area of ​​the wireless sensing signal transmitter). By adjusting the matching impedance of the antenna, the backscatter antenna can acquire the wireless sensing signal.

[0079] In specific implementations, the aforementioned first device has a backscattering function, meaning it is a low-power, low-complexity device that supports backscattering communication. This backscattering communication-enabled device can transmit information by modulating and backscattering (hereinafter referred to as "reflection") wireless signals received from the environment, without requiring power-consuming transceivers, amplifiers, or other traditional communication modules, thus achieving extremely low-power and low-cost communication. Optionally, the backscattering communication-enabled device can selectively collect energy from surrounding wireless signals or other energy sources for its communication, thereby achieving extremely low-power or even zero-power communication.

[0080] In addition, the aforementioned wireless sensing signal transmitter can be a network-side device (e.g., a base station or a Transmit Receive Point (TRP)) or a terminal, and the aforementioned wireless sensing signal receiver can also be a network-side device (e.g., a base station or a TRP) or a terminal. Specifically, the wireless sensing signal transmitter can be a first network-side device or a first terminal, and the wireless sensing signal receiver can be a second network-side device, a second terminal, or the first network-side device or a first terminal.

[0081] For example: Figure 3a As shown, the wireless sensing signal receiver can be a base station, and the wireless sensing signal transmitter can be a base station or a terminal. That is, base station A sends a sensing signal, and some or all of the signal is reflected by the tag, and base station B receives the sensing signal; or user equipment (UE) sends a sensing signal, and some or all of the signal is reflected by the tag, and base station receives the sensing signal.

[0082] For example: Figure 3b As shown, the wireless sensing signal receiver and the wireless sensing signal transmitter are the same device (base station or terminal). That is, the base station sends a sensing signal, and some or all of the signal is reflected by the tag, and the base station receives the sensing signal; or, the UE sends a sensing signal, and some or all of the signal is reflected by the tag, and the UE receives the sensing signal.

[0083] For example: Figure 3c As shown, the wireless sensing signal receiver can be a UE, and the wireless sensing signal transmitter can be a base station or a terminal. That is, UE A sends a sensing signal, and some or all of the signal is reflected by the tag, and UE B receives the sensing signal; or, the base station sends a sensing signal, and some or all of the signal is reflected by the tag, and UE receives the sensing signal.

[0084] For ease of explanation, the following embodiments are as follows: Figure 3c Taking the wireless sensing system shown as an example, the wireless sensing method provided in the embodiments of this application will be illustrated.

[0085] Optionally, before the first device backscatters the sensing signal to the wireless sensing signal receiver, the method further includes:

[0086] The first device receives first indication information from the wireless sensing signal transmitter, wherein the first indication information is used to indicate that the first device needs to feed back first information to the wireless sensing signal receiver;

[0087] The first device backscatters the sensing signal to the wireless sensing signal receiver, including:

[0088] The first device modulates the first information onto the sensing signal so that the wireless sensing signal receiver can receive the modulated sensing signal.

[0089] In specific implementation, the aforementioned first indication information is used to instruct the first device to modulate specified first information in the sensing signal, and the sensing signal can be understood as: a sensing signal used for sensing measurement.

[0090] In one optional implementation, the first indication information and the sensing signal can be signals transmitted by a wireless sensing signal transmitter at different times. For example, a first device first acquires the first indication information and determines first information based on it. After a time gap, the first device modulates the previously determined first information onto the sensing signal and backscatters the sensing signal, and the wireless sensing signal receiver receives the modulated sensing signal. Modulating the first information onto the sensing signal can be understood as the first device influencing the amplitude, phase, or frequency of the sensing signal in its environment by adjusting the matching impedance, thereby modulating the sensing signal and enabling it to carry the first information.

[0091] In another alternative implementation, the first indication information and the sensing signal may be located in different information domains of the same signal. For example, the head region of a signal may carry the first indication information, while other regions of the signal may be regarded as sensing signals used for sensing measurement.

[0092] In this embodiment, the first device can demodulate the received signal to obtain first indication information, and prepare the first information to be modulated into the backscattered sensing signal according to the indication of the first indication information. At this time, the first device can provide additional first information, such as the location information of the first device, the information of the target sensing object attached to the first device, etc. In this way, the first information can be used to assist the wireless sensing process, or even the first information of the first device can be directly used as the sensing result, thereby improving the sensing performance of the wireless sensing process.

[0093] Of course, in practice, the first device may also not acquire the first indication information, but directly backscatter the sensing signal. In this case, the sensing signal backscattered by the first device may not carry the first information added by the first device.

[0094] For example, the sensing signal transmitted by the wireless sensing signal transmitter is a preset sensing signal sequence whose signal configuration information, such as waveform, bit sequence, and frequency range, is known or predetermined. This preset sensing signal sequence is backscattered by a first device to the wireless sensing signal receiver. The wireless sensing signal receiver can perform target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain the target measurement. Target signal processing includes, but is not limited to, operations such as matched filtering, cross-correlation, and sliding correlation. The result of target signal processing is the target measurement.

[0095] It should be noted that in practical applications, the sensing signal transmitted by the wireless sensing signal transmitter can also be a sensing signal transmitted at least two intervals, without specific limitations here.

[0096] Furthermore, when the sensing signal receiving end receives at least a portion of the sensing signal backscattered by the first device, it can perform at least one of the following processing methods: measurement, demodulation, etc., to obtain the target measurement quantity. The target sensing result required by the target sensing demand information is determined based on the target measurement quantity. Of course, the node that determines the target sensing result based on the target measurement quantity can be a base station, UE, core network, or application server, without specific limitations. For example, the sensing signal receiving end can calculate the target sensing result based on the acquired target measurement quantity, and then directly or indirectly send the target sensing result to the initiator of the sensing service. Alternatively, the sensing signal receiving end can send the target measurement quantity to at least one of other base stations, UEs, core networks, or application servers, so that the target sensing result can be calculated by at least one of other base stations, UEs, core networks, or application servers, and then sent to the initiator of the sensing service.

[0097] It is worth noting that compared to sensing methods involving only base stations and user mobile terminals (i.e., base stations transmitting and receiving sensing signals, base station A transmitting and base station B receiving sensing signals, base stations and terminals transmitting and receiving sensing signals, terminals transmitting and receiving sensing signals, and terminal A transmitting and terminal B receiving sensing signals), the addition of tags has the following advantages:

[0098] (1) Tag has the characteristics of low power consumption, low cost and small size, making it very suitable for large-scale deployment in the environment. Therefore, compared with the above-mentioned sensing methods, it can greatly increase the sensing range (increase the sensing physical distance, physical angle range, increase the sensing network density) and improve the sensing performance (increase the sensing resolution, reduce the sensing error, increase the sensing signal-to-noise ratio, etc.).

[0099] (2) Tags can be deployed in the environment or on the sensing target. Regardless of where they are deployed, they can provide additional sensing information (environmental information, sensing target object information) to the sensing party, assisting device-free sensing in improving sensing performance, while having lower power consumption and less signaling overhead compared to device-based sensing;

[0100] (3) The tag is designed by humans, and its backscattering characteristics are more stable than the reflection characteristics of device-free sensing objects. It is less susceptible to interference from sensing distance and sensing (observation) direction, and is easier to be detected by the sensing party, thus improving the robustness of sensing.

[0101] (4) The tag deployment method is flexible. By cleverly deploying several tags or tag arrays on some paths where sensing signals are difficult to propagate, it is also expected to play a certain role in filling the sensing blind spots.

[0102] (5) The stored information on the tag (such as tag ID, tag location coordinates, number of tags, tag communication capabilities, physical information of the target to which the tag belongs, etc.) can be stored as prior information in the Sensing Network Function (SNF) or similar network function unit of the core network at the beginning of deployment, or the prior information stored in the tag can be read by the base station or terminal accessing the tag. Therefore, it can provide the network with richer and more flexible sensing schemes and realize more sensing functions.

[0103] (6) The cost of the tag itself is much lower than that of the base station and the terminal. The next generation of backscatter tags will have strong communication functions. Therefore, tag-based sensing naturally becomes an economical, efficient and low-complexity way to achieve integrated sensing.

[0104] It should be noted that, in application, the aforementioned sensing signals can be sensing signals from a specific sensing service, such as: weather monitoring, reconstructing 3D maps, traffic / crowd sensing, air quality detection such as PM2.5 monitoring, factory pollutant detection, farm livestock monitoring, or human motion / posture recognition and other sensing services.

[0105] The initiator of this sensing service can be a third-party application, the core network (or network management system, or base station), or the UE. Specific Implementation Method 1

[0107] For example Figure 3c If the wireless sensing system shown is initiated by a third-party application, the sensing method provided in this application embodiment may include the following steps:

[0108] Step 1) The application server receives a perception request from a third-party application. For example, the perception request is a 3D map of the target area (the map's accuracy / resolution is 5m). The target area can be a specified area, such as the area around a building, or the area around the target UE. The perception request can include information about the target area, such as the latitude and longitude (range) of the area.

[0109] Step 2) The application server (including intranet servers such as IP Multimedia Subsystem (IMS) or extranet servers) sends the sensing request to the core network (e.g., Access and Mobility Management Function (AMF)) or the core network's sensing network function / sensing element, such as the Sensing Network Function (SNF). Alternatively, the application server sends the sensing request to the AMF, which forwards the request to the sensing network function / sensing element.

[0110] Step 3) The core network function or network element (such as a sensing network function / sensing network element) determines the associated transmitting UE (i.e., UE A) and receiving UE (i.e., UE B) based on the sensing requirements, and sends the sensing requirements and / or the sensing signal-related configurations corresponding to those requirements to the associated UE A and / or UE B. It should be noted that, in cases where the base station transmits sensing signals, or where the base station schedules UE A to transmit sensing signals, or where the base station participates in deciding the configuration for UE A to transmit sensing signals, or where the base station is responsible for converting target measurements into sensing results, the core network function or network element (such as a sensing network function / sensing network element) determines the associated base station based on the sensing requirements, and sends the sensing requirements and / or the sensing signal-related configurations corresponding to those requirements to the associated base station.

[0111] Step 4) The core network (or sensing network element) or UE A or base station sends the relevant configuration information (including time and frequency information, sequence information, etc.) or sensing requirements of the sensing signal to UE B.

[0112] Step 5) The core network (or sensing network element) or UE A or base station sends the types of measurement quantities related to the sensing signal that UE B needs to measure (such as: AOA, AOD, delay, received power of the sensing signal, radar spectrum information, etc.) to UE B (receiving terminal); it should be noted that when the types of measurement quantities are determined by UE B according to the sensing requirements, the core network (or sensing network element) or UE A or base station does not need to separately signal the types of the above measurement quantities (for example: UE B determines the types of the above measurement quantities according to the mapping table from sensing requirements to measurement quantity types).

[0113] Step 6) UE A or the base station sends a sensing signal, wherein UE A or the base station may send the sensing signal in a beamsweeping manner.

[0114] Step 7) UE B receives the sensing signal after at least part of the tag reflection to obtain the target measurement.

[0115] Step 8) Determine the target perception result based on the target measurement.

[0116] In implementation, the target perception result can be determined by at least one of the core network, application server, base station or UE based on the target measurement.

[0117] Method 1: If the conversion from the target measurement to the target perception result occurs in the core network or application server, then step 8) above may include the following specific process:

[0118] Step 81a) UE B sends the target measurement to the core network (or sensing network element), or UE B sends the target measurement to UE A or the base station, and UE A or the base station sends the target measurement to the core network (or sensing network element).

[0119] Step 82a) The core network (or sensing network element) sends the target measurement to the application server. The application server determines the target sensing result based on the target measurement. Alternatively, the core network (or sensing network element) determines the target sensing result based on the target measurement and sends the target sensing result to the application server.

[0120] Step 83a) The application server sends the target perception results to the third-party application.

[0121] Method 2: If the conversion from the target measurement to the target perception result occurs at the base station, then step 8) above may include the following specific process:

[0122] Step 81b) UE B sends the target measurement to the associated base station. The base station determines the target perception result based on the target measurement and sends the target perception result to the core network (or perception network element). Alternatively, UE B sends the target measurement to UE A. UE A sends the target measurement to the associated base station. The base station determines the target perception result based on the target measurement and sends the target perception result to the core network (or perception network element).

[0123] Step 82b) The core network (or sensing network element) sends the target sensing results to the application server;

[0124] Step 83b) The application server sends the target perception results to the third-party application.

[0125] Method 3: If the conversion from the target measurement to the target perception result is performed in the UE, then step 8) above may include the following specific process:

[0126] Step 81c) UE B determines the target perception result based on the target measurement and sends the target perception result to the core network (or perception network element), or UE B determines the target perception result based on the target measurement and sends the target perception result to UE A, UE A sends the target perception result to the core network (or perception network element), or UE B sends the target measurement to UE A, UE A determines the target perception result based on the target measurement and sends the target perception result to the core network (or perception network element).

[0127] Step 82c) The core network (or sensing network element) sends the target sensing results to the application server;

[0128] Step 83c) The application server sends the target perception results to the third-party application. Specific Implementation Method Two

[0130] When the sensing service is initiated by the core network (or network management system, or base station), the sensing method provided in this application differs from the first specific implementation method in that:

[0131] The core network functions or network elements (such as sensing network functions / sensing network elements) obtain sensing requirements and / or sensing signal related configurations from the core network AMF. Alternatively, the AMF receives sensing requirements or sensing signal related configuration information sent by the network management system and forwards it to the sensing network element. Or, the AMF receives sensing requirements or sensing signal related configuration information sent by the base station initiating the sensing service and forwards it to the sensing network element. (Of course, the sensing requirements or sensing signal related configuration information of the wireless sensing signal transmitter (base station or UE A) may not be sent to the core network, but directly sent to the wireless sensing signal receiver (UE B)).

[0132] After the target measurement is obtained at the wireless sensing signal receiving end, the node that completes the target measurement to target sensing result can send the target sensing result directly or indirectly to the initiator of the sensing service.

[0133] For example, if the conversion from target measurement to target perception result is completed in the core network, the initiator of the perception service can obtain the target perception result in the following ways:

[0134] UE B sends the target measurement to the core network (AMF or sensing network element); or, UE B sends the target measurement to the base station, and the base station sends the target measurement to the core network (AMF or sensing network element).

[0135] The core network (AMF or sensing network element) converts target measurements into target sensing results;

[0136] If the core network's sensing requirements come from the network management system, then the core network sends the target sensing results to the network management system; or the core network sends the target measurement quantities to the network management system, and the network management system converts the target measurement quantities into target sensing results.

[0137] If the target perception requirement of the core network comes from the base station, then the core network sends the target perception result to the base station.

[0138] For example, if the conversion from target measurement to target sensing result is completed at the base station, the initiator of the sensing service can obtain the target sensing result in the following ways:

[0139] UE B sends the target measurement to the base station; or, UE B sends the target measurement to UE A, and UE A sends the target measurement to the base station.

[0140] The base station converts the target measurement into target perception results and sends the target perception results to the core network (AMF or perception network element);

[0141] If the core network's perception requirements come from the network management system, then the core network sends the target perception results to the network management system.

[0142] If the core network's sensing needs come from the base station, then the core network sends the target sensing results to the base station.

[0143] For example, if the conversion from target measurement to target perception result is completed at the UE, the initiator of the perception service can obtain the target perception result in the following ways:

[0144] UE B determines the target perception result based on the target measurement and sends the target perception result to the core network (AMF or perception network element); or, UE B sends the target measurement to UE A, UE A determines the target perception result based on the target measurement and sends the target perception result to the core network (AMF or perception network element).

[0145] If the sensing requirement comes from the network management system, the core network sends the target sensing result to the network management system;

[0146] If the sensing requirement originates from the base station, the core network sends the target sensing result to the base station.

[0147] It should be noted that when the sensing network functions / sensing network elements are deployed at the base station, the core network may not participate in the entire sensing process. For example, the sensing service is initiated by the base station, and the conversion from the target measurement quantity to the target sensing result is completed at the UE or the base station. Specific Implementation Method 3

[0149] When the sensing service is initiated by a UE (UE A, UE B, or other UE), the sensing method provided in this application differs from the first specific implementation method in that:

[0150] When a sensing service is initiated, the UE sends a sensing request (including sensing requirement information) and / or sensing signal-related configuration information to the AMF via Non-Access Stratum (NAS) signaling. Then, the AMF forwards the sensing requirement information and / or sensing signal-related configuration information to the sensing network element.

[0151] After the target measurement is obtained at the wireless sensing signal receiving end, the node that completes the target measurement to target sensing result can send the target sensing result directly or indirectly to the initiator of the sensing service.

[0152] For example, if the conversion from target measurement to target perception result is completed in the core network, the initiator of the perception service can obtain the target perception result in the following ways:

[0153] UE B sends the target measurement to the core network (AMF or sensing network element); or, UE B sends the target measurement to the base station, and the base station sends the target measurement to the core network (AMF or sensing network element).

[0154] The core network (AMF or sensing network element) converts target measurements into target sensing results;

[0155] The core network (AMF or sensing network element) sends the sensing results to the UE that initiated the sensing service via NAS signaling; or, the core network (AMF or sensing network element) sends the sensing results to the base station associated with the UE that initiated the sensing service, and the associated base station then sends the sensing results to the UE that initiated the sensing service.

[0156] For example, if the conversion from target measurement to target sensing result is completed at the base station, the initiator of the sensing service can obtain the target sensing result in the following ways:

[0157] UE B sends the target measurement to the base station; or, UE B sends the target measurement to UE A, and UE A sends the target measurement to the base station.

[0158] The base station converts the target measurement into target perception results and sends the target perception results to the core network (AMF or sensing network element);

[0159] The core network (AMF or sensing network element) sends the sensing results to the UE that initiated the sensing service via NAS signaling; or, the core network (AMF or sensing network element) sends the sensing results to the base station associated with the UE that initiated the sensing service, and the associated base station then sends the sensing results to the UE that initiated the sensing service.

[0160] For example, if the conversion from target measurement to target perception result is completed at the UE, the initiator of the perception service can obtain the target perception result in the following ways:

[0161] UE B determines the target perception result based on the target measurement and sends the target perception result to the core network (AMF or perception network element); or, UE B sends the target measurement to UE A, UE A determines the target perception result based on the target measurement and sends the target perception result to the core network (AMF or perception network element).

[0162] The core network (AMF or sensing network element) sends the sensing results to the UE that initiated the sensing service via NAS signaling; or, the core network (AMF or sensing network element) sends the sensing results to the base station associated with the UE that initiated the sensing service, and the associated base station then sends the sensing results to the UE that initiated the sensing service.

[0163] It should be noted that when the sensing network functions / sensing network elements are deployed at the base station, the core network may not participate in the entire sensing process. For example, the sensing service is initiated by the UE, and the conversion from the target measurement quantity to the target sensing result is completed by the UE or the base station.

[0164] It should be noted that, in implementation, the process of determining the target perception result (e.g., a 3D map) based on target measurements (e.g., angle information, received power information, etc.) can be completed at UE A / B or the base station, or at the core network or application server. Furthermore, relevant information from UE A or the base station, such as antenna position, synchronization information (SFN start time), and AI-related information (e.g., AI training data), can also be sent to the node that completes the conversion from target measurements to the target perception result to assist in the conversion process. Additionally, the billing function is completed at the core network or application server.

[0165] For ease of explanation, in the following embodiments, core network functions or network elements (such as sensing network functions / sensing network elements) are collectively referred to as the second device. The second device can be a sensing network function / sensing network element in the core network or a sensing network function / sensing network element in the access network; no specific limitation is made here.

[0166] Taking the second device as an SNF as an example, it satisfies at least one of the following characteristics:

[0167] 1) SNF can communicate with the target UE (including, for example) Figure 3c UE A and UE B shown, or including as Figure 3c The target information is exchanged between the UE (as shown in the figure), the serving base station of the target UE, the target tag (i.e. the tag participating in the sensing process), the serving base station of the target tag, or the base station associated with the target area, to obtain the target sensing result or the target measurement (uplink measurement or downlink measurement). The target information includes processing sensing requests, interactive sensing capabilities, interactive sensing auxiliary data, interactive sensing measurement or sensing result.

[0168] 2) SNF can determine the type of sensing to use based on factors such as the possible types of sensing clients, the required Quality of Service (QoS), UE sensing capabilities, and base station sensing capabilities. The aforementioned sensing methods are as follows: Figures 3a to 3c These correspond to three different types of perception.

[0169] 3) The SNF can store and manage (including adding, deleting, and updating) prior information or capability information of tags associated with the target tag area (for ease of explanation, the prior information or capability information of tags will be uniformly referred to as the first information in the following embodiments). The first information includes at least one of the following: a list of tag IDs (not limited to the electronic product code EPC code of RFID, but also the ID of a new device), the number of tags in the associated area, a list of tag location information (two-dimensional or three-dimensional, including the tag and the Cartesian coordinates or polar coordinates of the reference frame origin), a list of tag sensing distances, a list of tag working bandwidths, a list of working frequencies of each channel of the tag (i.e., subcarrier frequencies within the bandwidth), a list of tag modulation methods, supported read and write frequencies, the signal-to-noise ratio of the tag reflected signal, the number of transmitting antennas of a single tag, the number of receiving antennas of a single tag, the antenna arrangement information of a single tag (antenna spacing, antenna array, etc. of a single tag), and tag array arrangement information (here referring to a tag array formed by multiple tags, with one tag as one array element, including...). Tag spacing, tag array configuration, etc.; error statistical distribution parameters of tag reflected signal phase; tag power supply method (including passive, semi-passive, and active); active tag power information; energy storage capacity (i.e., maximum energy storage capacity of the tag); tag amplitude modulation capability (i.e., amplitude information of the adjustable reflected signal supported, continuous amplitude modulation or discrete amplitude modulation and the number of corresponding continuous or discrete feature states); tag phase modulation capability (i.e., phase information of the adjustable reflected signal supported, continuous phase modulation or discrete phase modulation and the number of corresponding continuous or discrete feature states); tag frequency modulation capability (i.e., frequency information of the adjustable reflected signal supported, continuous frequency modulation or discrete frequency modulation and the number of corresponding continuous or discrete feature states); tag encryption algorithm type (e.g., Cyclic Redundancy Check (CRC) 16 or CRC 24, etc.); channel coding (e.g., the type of forward error correction code (FEC) and the corresponding coding rate, etc.).

[0170] It is worth noting that at least one of the tag prior information or capability information is reported by the target tag to network-side devices such as base stations or SNFs. For example, the first information is read and reported by the tag reader (such as the tag access base station).

[0171] Optionally, the first information includes at least one of the following: the identifier of the first device, the status indication information of the first device participating in sensing (which may be: a participation sensing flag (indicating whether or agreeing to participate in sensing), the sensing time period of the first device (indicating the start and end time / duration of the sensing period), a sensing service occupancy flag (or equivalent status indication information, indicating whether sensing service is currently in progress), etc.), the incident angle and reflection angle range of the first device (the incident angle range refers to the range of incident angles of the sensing signal that enables the tag to work normally; the reflection angle range refers to the range of reflection angles of the tag's reflected signal), the number of first devices in the associated area, the location information of the first device (two-dimensional or three-dimensional, including the tag and the Cartesian coordinates or polar coordinates of the reference frame origin), the sensing distance of the first device, the operating bandwidth of the first device, and the operating frequency of each channel of the first device (i.e., the subcarrier frequency within the bandwidth). The modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device (including the number of array elements in a single tag array (1 tag as 1 array element, the number of antennas in a single tag, and the antenna arrangement information of a single tag)), the signal-to-noise ratio of the reflected signal of the first device, the number of transmit antennas of a single first device, the number of receive antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device (whether the tag is active or the power information of the active tag), the amplitude modulation capability of the first device, the phase modulation capability of the first device, the frequency modulation capability of the first device, the encryption algorithm type of the first device, and the type and corresponding coding rate of the forward error correction code (FEC) of the channel coding of the first device.

[0172] 4) The SNF can determine the association between the base station and the tag within the sensing area based on the base station location information it possesses or obtains from the AMF, as well as the first information of the tag associated with the target tag area stored in the SNF. The association criterion is to ensure that the signal-to-noise ratio of the sensing signal reflected by the tag received by the base station meets the requirements (e.g., meeting QoS requirements, meeting the sensing conditions corresponding to the sensing requirements information, etc.), and that the sensing distance is greater than or equal to the distance between the base station and the tag.

[0173] 5) The SNF can act as a reader for a target tag by scheduling associated base stations (the associated base stations of a tag can include at least one of the serving base station of the tag and base stations associated with the area where the tag is located). For example, a base station can adjust its beam to read information from the storage area of ​​a specific tag, or poll the storage areas of multiple tags within a certain area to read information. After reading the relevant information, the base station can report it to the SNF to update the prior information stored and managed by the SNF, and it can also be used as necessary or auxiliary information for sensing services.

[0174] 6) SNF can act as a writer for a target tag by scheduling the associated base station. For example, the base station can adjust the beam to write information to the storage area of ​​a certain tag, or poll the storage areas of multiple tags in a certain area to write information.

[0175] 7) SNF can select tags by scheduling the associated base stations of the target tag. It can instruct the base station to select tags during the sensing process. For example, the base station can adjust the beam to select tags that meet the sensing conditions corresponding to the sensing requirements, so that tags that meet the sensing requirements and conditions enter the corresponding active state, while other tags that do not meet the sensing requirements and conditions are in an inactive state.

[0176] 8) SNF can store tags by scheduling the associated base stations of the target tag. For example, the base station can adjust the beam to scan all tags that meet the selection criteria in a loop, and each tag will return its EPC code (EPC code: a code used to identify the object to which the tag is attached).

[0177] 9) SNF can provide power to the target tag by scheduling the associated base station of the target tag.

[0178] 10) The second device is located on the core network or the base station side. If the second device is located on the base station side, all processes of the sensing service can be completed on the access network (RAN) side (e.g., the sensing service is triggered by the base station or the sensing service is triggered by the UE).

[0179] 11) The second device may be a separate functional / physical entity, or it may be deployed in a general server in the core network as one of the core network functions, or it may be deployed on the base station side as one of the base station functions.

[0180] 12) The second device can directly interact with the application server (e.g., the operator's application server) to exchange perception requests (including perception demand information) and perception results; or, the second device can interact with the AMF to exchange perception requests and perception results, and the AMF can directly or indirectly (through the Gateway Mobile Location Center (GMLC) and Network Exposure Function (NEF)) to exchange perception requests and perception results with the application server (e.g., a third-party application server).

[0181] 13) Manage the overall coordination and scheduling of resources required for sensing, such as sensing resources for base stations and / or UEs.

[0182] 14) Calculate or verify the target perception results and estimate the perception accuracy.

[0183] 15) Supports immediate awareness requests.

[0184] 16) Supports latency-aware requests.

[0185] 17) Supports periodic or event-triggered perception requests.

[0186] 18) Support canceling periodic or triggered sensory behaviors.

[0187] 19) When the second device is a sensing network element, multiple sensing network elements can correspond to one AMF, or a single sensing network element can be connected to multiple AMFs. Where multiple sensing network elements can correspond to one AMF, when the AMF obtains sensing demand information, it can determine at least one of its corresponding multiple sensing network elements as a second device to participate in the sensing process corresponding to the sensing demand information, based on the sensing demand information.

[0188] The factors considered by the AMF in determining the sensing network elements participating in the sensing process include at least one of the following: the requested QoS (such as sensing accuracy, response time, sensing QoS level), access type (3GPP access / non-3GPP access), the target UE's access network AN type (i.e., 5G NR or eLTE) and serving AN node (i.e., gNodeB or NG-eNodeB), RAN configuration information, sensing network element capabilities, sensing network element load, sensing network element location, indication of single event reporting or multiple event reporting, event reporting duration, network slicing information, etc.

[0189] 20) Based on the target area corresponding to the sensing requirement information (e.g., a 3D map of the sensing target area), obtain base station information that may require interaction by interacting with other network elements / functions in the core network.

[0190] It should be noted that the entire sensing process can be supervised by the core network (or sensing network element), application server, or other nodes (such as AMF).

[0191] Optionally, in step 3) above, the core network function or network element (such as sensing network function / sensing network element) may determine the target UE in the following ways:

[0192] According to the relevant information reported by the UE to the core network, that is, the UE's capability information meets the perception requirements;

[0193] The perception requirements are met based on the fourth information of the UE, such as the UE's location information (the UE's location or the area it is in).

[0194] Depending on whether the UE accesses the transmitting base station associated with the perception requirement information, that is, the UE accesses the network-side device that meets the perception requirement (in the following embodiments, the network-side device is a base station as an example for illustration), that is, the base station associated with the perception requirement information is determined first, and then the UE is determined.

[0195] In practice, UE A and UE B can report their respective perception capabilities to the core network, or one of UE A and UE B can report the perception capabilities of the other, which in turn reports the perception capabilities of both to the core network.

[0196] Correspondingly, in step 3) above, the core network function or network element (such as sensing network function / sensing network element) can determine the associated base station in a manner that includes at least one of the following:

[0197] Based on whether it is an access base station of an associated UE (i.e., the UE is determined first and then the base station is determined), the base stations participating in the sensing include the base stations accessed by the terminals that meet the sensing requirements.

[0198] Based on the capability-related information reported by the base station to the core network, that is, the capability information of the base station participating in the sensing meets the sensing requirements;

[0199] The sensing requirements are met based on the fifth piece of information from the base station, such as the base station location and the area it is located in.

[0200] Correspondingly, in step 3) above, the core network function or network element (such as sensing network function / sensing network element) can determine the target tag in the following ways:

[0201] Based on whether it is connected to the associated base station or UE (the base station or UE is determined first, and then the tag is determined), that is, the tag participating in the sensing is connected to the terminal or network-side device that meets the sensing requirements.

[0202] Based on the capability-related information reported by the tag to the core network, that is, the capability information of the tag participating in the perception meets the perception requirements;

[0203] Based on the tag's first information (including: tag location / area information, tag incident angle and reflection angle range information, and state indication information for participation in sensing, etc.), that is, the prior information of the tag participating in sensing satisfies the sensing requirements.

[0204] In addition, during implementation, there can be an association between the sensing requirement and the sensing signal related configuration corresponding to the sensing requirement. In this way, the node that obtains the sensing requirement information can determine the sensing signal related configuration based on the association between the sensing requirement and the sensing signal related configuration.

[0205] Of course, other methods can also be used to determine the corresponding sensing signal configuration information based on the sensing requirement information (e.g., determining the bandwidth of the sensing signal based on the sensing resolution requirement). The node that determines the corresponding sensing signal configuration information based on the sensing requirement information can be at least one of the following: base station, core network, UE, and second device.

[0206] Method 1: The base station (corresponding to the sensing signal transmission method of the base station sending sensing signals) or UE A (corresponding to the sensing signal transmission method of UE A sending sensing signals) reports its sensing capabilities (capabilities related to sending sensing signals, such as the maximum bandwidth of the sensing signals, the maximum transmit power of the sensing signals, etc.) to the core network (AMF or sensing network element); and / or, UE B reports its sensing capabilities (capabilities related to receiving sensing signals, such as the maximum bandwidth of the sensing signals that can be received, the measurement quantities of the sensing signals that can be supported, etc.) to the core network (AMF or sensing network element); and / or, the base station or UE reports the sensing capabilities (capabilities related to receiving and backscattering sensing signals, such as the operating bandwidth and frequency, the maximum read and write frequency that can be supported, etc., this information is stored on the tag) to the core network (AMF or sensing network element); then the core network determines the sensing signal related configuration information according to the sensing requirements.

[0207] Method 2: The base station (corresponding to the sensing signal transmission method of the base station sending sensing signals) or UE A (corresponding to the sensing signal transmission method of UE A sending sensing signals) determines the relevant configuration information of the sensing signal according to the sensing requirements;

[0208] Method 3: The core network determines a portion of the configuration information related to the sensing signals, while the base station (corresponding to the sensing signal transmission method of the base station sending the sensing signals) or UE A (corresponding to the sensing signal transmission method of the UE A sending the sensing signals) determines another portion of the configuration information related to the sensing signals.

[0209] Method 4: The core network recommends relevant configuration information for sensing signals to the base station (corresponding to the sensing signal transmission method of the base station sending sensing signals) or UE A (corresponding to the sensing signal transmission method of the UE A sending sensing signals) based on the sensing requirements. The base station or UE A ultimately decides on the relevant configuration information for sensing signals.

[0210] Method 5: The base station (corresponding to the sensing signal transmission method of the base station sending sensing signals) or UE A (corresponding to the sensing signal transmission method of UE A sending sensing signals) recommends sensing signal-related configuration information to the core network according to the sensing requirements, and the core network finally decides on the sensing signal-related configuration information.

[0211] Optionally, the sensing signal-related configuration information includes at least one of the following:

[0212] Waveforms, such as: Orthogonal frequency division multiplex (OFDM), SC-FDMA, Orthogonal Time Frequency Space (OTFS), Frequency Modulated Continuous Wave (FMCW), pulse signals, etc.

[0213] Subcarrier spacing, for example: 30kHz subcarrier spacing in OFDM systems;

[0214] The guard interval is the time interval between the end of signal transmission and the latest echo signal of that signal being received. This parameter is proportional to the maximum sensing distance. For example, it can be calculated by 2dmax / c, where dmax is the maximum sensing distance (related to sensing requirements). For another example, for self-transmitting and self-receiving sensing signals, dmax represents the maximum distance from the sensing signal transmission point to the signal transmission point, and c represents the speed of light. In some cases, the OFDM signal cyclic prefix CP can serve as the minimum guard interval.

[0215] Bandwidth, which is inversely proportional to distance resolution, can be obtained by c / 2 / delta_d, where delta_d represents distance resolution (related to perception requirements) and c represents the speed of light;

[0216] The burst duration is inversely proportional to the rate resolution (related to sensing requirements). This parameter represents the time span of the sensed signal and is primarily used to calculate the Doppler frequency offset. This parameter can be calculated using c / 2 / delta_v / fc, where delta_v represents the rate resolution and fc represents the carrier frequency of the sensed signal.

[0217] The time-domain interval can be calculated using c / 2 / fc / v_range; where v_range represents the maximum speed minus the minimum speed (related to sensing requirements), and this parameter is the time interval between two adjacent sensing signals;

[0218] Transmitted signal power, for example: taking a value every 2dBm from -20dBm to 23dBm;

[0219] Signal format, which identifies the format of the sensed signal, such as: Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), Positioning Reference Signal (PRS), etc., or other predefined signals, as well as related sequence format information;

[0220] Signal direction, for example: sensing the direction of a signal or beam information;

[0221] Time resources, such as the time slot index or symbol index of the time slot where the sensing signal is located; among them, time resources are divided into two types: one is one-time time resources, such as one symbol sending an omnidirectional first signal; the other is non-one-time time resources, such as multiple sets of periodic time resources or discontinuous time resources (which may include start and end times), each set of periodic time resources sends a sensing signal in the same direction, and the beam direction on different sets of periodic time resources is different;

[0222] Frequency resources include the center frequency, bandwidth, resource block (RB) or subcarrier, reference frequency position (Point A), and starting bandwidth position of the sensed signal;

[0223] Quasi-co-location (QCL) relationships, for example: a sensing signal includes multiple resources, each resource corresponds to a synchronization signal and PBCH block (SSB) QCL, and the QCL type includes Type A, B, C or D;

[0224] The identification information of the first device is the backscatter tag ID participating in wireless sensing, and this tag ID is not limited to the EPC of RFID, but can also be the ID of a new device;

[0225] Information related to the configuration of the sensing signal of the first device, such as: tag operating bandwidth, operating frequency, number of channels, and subcarrier frequency corresponding to each channel;

[0226] The initial phase of the sensed signal, for example: the initial phase of the signal on each channel;

[0227] The antenna information of the first device, such as the number of transmitting antennas, the number of receiving antennas, and the layout of the transmitting and receiving antenna arrays (including antenna array type and antenna spacing);

[0228] The antenna information of the wireless sensing signal transmitter includes: the number of antennas that the base station transmits sensing signals, the specific antenna index, and the antenna position coordinates (two-dimensional coordinates, three-dimensional coordinates, Cartesian coordinates, or polar coordinates, which should belong to the same coordinate system as the tag participating in the sensing).

[0229] The timestamp information of each antenna transmitting the sensing signal, that is, the absolute or relative time of each signal transmission;

[0230] The time interval between signals transmitted between different antennas, for example: if the base station uses time division multiplexing (TDM) or TDM+frequency division multiplexing (FDM) to transmit sensing signals, then the time interval between signals transmitted between different antennas needs to be configured.

[0231] The amplitude modulation capability of the first device, namely the amplitude information of the adjustable reflected signal it supports, continuous amplitude modulation or discrete amplitude modulation and the number of corresponding continuous or discrete feature states;

[0232] The phase modulation capability of the first device refers to the phase information of the adjustable reflected signal it supports, the number of states of continuous or discrete phase modulation and the corresponding continuous or discrete features.

[0233] The frequency modulation capability of the first device, namely the frequency information of the adjustable reflected signal it supports, continuous frequency modulation or discrete frequency modulation and the number of corresponding continuous or discrete feature states;

[0234] The encryption algorithm type of the first device, for example: CRC16, CRC24, etc.;

[0235] The channel coding of the first device, such as the type of forward error correction (FEC) coding and its corresponding coding rate;

[0236] The signal modulation methods associated with the first device include: double-sideband amplitude shift keying (DSB-ASK), single-sideband amplitude shift keying (SSB-ASK), phase-reversal amplitude shift keying (PR-ASK), frequency shift keying (FSK), binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), etc.

[0237] The data encoding method and frame format associated with the first device, for example: the encoding method that needs to be determined may be binary encoding, Manchester code, FMO code, delayed modulation code (Miller code), non-return-to-zero (NRZ) code, bipolar non-return-to-zero code BNRZ code, non-return-to-zero inverted code NRZ-I code, pulse width encoding, etc., which are currently used and may be used in the future backscatter communication digital encoding; and the frame format that needs to be determined includes preamble or frame synchronization, etc.

[0238] Optionally, the target measurement includes:

[0239] The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following:

[0240] Received Signal Strength Indicator of the Reflected Signal Backscattered by the First Device The following parameters are considered: backscattering path channel matrix H of the first device; backscattering path channel state information (CSI) of the first device; multipath parameters in the backscattering path multipath channel of the first device (including the number of multipaths, power of each path, delay, angle information, etc.); Doppler frequency and Doppler spread of the reflected signal; departure angle of the reflected signal (i.e., departure angle of the transmitted signal of the tag / tag array); arrival angle of the reflected signal (i.e., the angle at which the base station receives the reflected signal from the tag / tag array); phase difference between the first devices (e.g., phase difference between different tags within the tag array); delay difference between the first devices (e.g., delay difference between different tags within the tag array); phase difference between the antennas of the first devices (i.e., phase difference between different antennas of the same tag); delay difference between the antennas of the first devices (i.e., delay difference between different antennas of the same tag); and unique identification information of the first device (this unique identification information is used to distinguish each first device, or to distinguish each first device in the sensing area, such as: tag). (The unique waveform sequence reflected by the ID or tag).

[0241] It should be noted that, in implementation, the aforementioned target measurement may also include a second measurement, which may include at least one of the following:

[0242] Feature information of the target object;

[0243] Information related to the target event;

[0244] Information related to the target environment.

[0245] The target object's characteristic information refers to information that reflects the target object's attributes or state, and may include at least one of the following: the target object's position, velocity, acceleration, material, shape, category, and radar cross section (RCS). The target event's related information is information relevant to the target event, i.e., information that can be detected / perceived when the target event occurs, and may include at least one of the following: fall detection, intrusion detection, motion recognition, respiratory monitoring, and heart rate monitoring. The target environment's related information may include at least one of the following: humidity, brightness, temperature and humidity, atmospheric pressure, air quality, weather conditions, topography, building / vegetation distribution, population statistics, crowd density, and vehicle density.

[0246] In applications, the first device may also have an information acquisition function. For example, if the first device further includes a sensor, then the first device may also be used to acquire the second measurement quantity mentioned above.

[0247] Optionally, the first device also has an information collection function, and the method further includes:

[0248] The first device acquires a second measurement quantity corresponding to the perceived target, wherein the first information includes the second measurement quantity.

[0249] The sensing target can be the sensing target in the wireless sensing method provided in this application embodiment. For example, when the sensing requirement information is the location of the sensing target object, the sensing target is the target object. The second measurement quantity corresponding to the sensing target can be the orientation information, location information, etc. of the target object collected by the first device through a position sensor, etc.

[0250] In some embodiments, the target measurement is a measurement for each antenna or a measurement for each sensing resource; for example, the target measurement is a measurement for each antenna (port) of the sensing signal transmitter or the sensing signal receiver, or the target measurement is a measurement on each sensing resource, such as a measurement for each resource block (RB), subcarrier, or RB group.

[0251] In practice, the second measurement collected by the first device can be modulated into the backscattered sensing signal for transmission to the sensing signal receiving end.

[0252] Optionally, the sensing signal transmitted by the wireless sensing signal transmitter may be an unmodulated continuous wave (CW) signal, and the first device modulates the first information onto the sensing signal, including:

[0253] The first device modulates the first information onto the CW signal.

[0254] In practice, the first indication information may indicate which first information the first device needs to modulate in the backscattered CW signal. For example, the first information may include the second measurement collected by the first device, or it may also include other relevant information pre-stored in the tag.

[0255] In this embodiment, the first device can modulate the first information in the backscattered sensing signal to provide information other than the sensing measurement quantity for the sensing process, thereby improving the sensing performance of the sensing system.

[0256] It should be noted that, in practical applications, the sensing signal received by the first device may also be other signal types, and the way the first device backscatters the sensing signal and the way it carries the first information in the backscattered sensing signal can be adaptively adjusted, without being specifically limited here.

[0257] Of course, if the relevant information stored in the tag itself is used as the main / auxiliary information for perception and needs to be transmitted to the function or entity that realizes the conversion of the target measurement quantity to the target perception result during the perception process, in addition to the first device modulating the pre-stored relevant information into the CW signal to directly or indirectly transmit it to the node (such as: core network (or perception network element), application server, base station or UE) that determines the target perception result based on the target measurement quantity, the core network or SNF can also schedule the base station or UE to read the relevant information pre-stored in the first device.

[0258] For example, the process by which UE B obtains the relevant information pre-stored in the tag is as follows:

[0259] After the core network or SNF determines the tag-based sensing method based on sensing requirements, it also needs to determine whether it is necessary to select, store, or access (read and write information) the tags involved in sensing.

[0260] The core network or SNF will issue operation commands (selection, inventory, access, etc.) for the tag to the base station (when the base station sends the sensing signal transmission mode) or UE A (when the UE A sends the sensing signal transmission mode); optionally, the above operation commands for the tag can be included in the sensing requirement information.

[0261] The base station or UE A configures the sensing signal according to the sensing requirement information carrying the operation command with the tag, and sends the sensing signal according to the sensing signal configuration.

[0262] After receiving the sensing signal, the tag demodulates the operation command on the tag and prepares the first information that needs to be backscattered.

[0263] The sensing signal transmitted by the base station contains an unmodulated continuous wave (CW) signal, and the tag modulates the first information to be backscattered onto the CW to reflect it to UE B; or, the sensing signal transmitted by UE A contains an unmodulated continuous wave (CW) signal, and the tag modulates the first information to be backscattered onto the CW to reflect it to UE B.

[0264] In practice, after receiving the sensing signal reflected by the tag (i.e., the modulated continuous wave CW signal), UE B can demodulate the sensing signal to obtain the aforementioned first information.

[0265] Furthermore, depending on the different functions or entities that convert the target measurement quantity into the target perception result, the UE B can forward the acquired first information and the measured target measurement quantity to the core network, base station, or other UEs. Alternatively, the UE B can determine the target perception result based on the first information and the measured target measurement quantity, and forward the target perception result to the initiator of the perception service corresponding to the target perception requirement information through at least one of the core network, base station, and other UEs. The process is the same as in the embodiment described above where at least one of the core network, application server, base station, or UE determines the target perception result based on the target measurement quantity, and will not be repeated here.

[0266] Optionally, the target measurement quantity may include:

[0267] The demodulated information backscattered by the first device (such as the first information); and / or,

[0268] Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

[0269] The target measurement includes the demodulated tag backscattered information (i.e., the first information of the tag modulated onto the sensing signal, such as tag ID, tag's own position coordinates, etc.). Alternatively, it can be the demodulated tag information plus at least one of the following: tag-based wireless sensing measurement or tag-free wireless sensing measurement.

[0270] The tag-based measurement is the measurement of the signal after the tag has processed the signal. For example, the RSSI / received power and phase of multiple reflected signals of the sensed signal by the tag array. The reflected signals are modulated by the tag and can be distinguished by different tag IDs.

[0271] The tag-free measurement is a measurement that can be obtained without tag assistance. For example, the base station antenna array obtains the azimuth angle of the tag relative to the base station based on the phase of the reflected signal from the sensing target tag without any processing of the incident sensing signal. Here, the phase of the tag reflected signal is the tag-free measurement.

[0272] Similar to the target measurement quantities mentioned above, the target perception result may include a perception result obtained based on the demodulated tag backscatter information (i.e., the first information carried in the backscattered perception signal), or the demodulated tag backscatter information may be directly used as the perception result. Furthermore, the target perception result may also include a perception result obtained based on at least one of tag-based or tag-free measurement quantities, or the target perception result may be a comprehensive perception result obtained from the above three types of perception results.

[0273] In applications, some prior information about a tag (referred to as first information in the following embodiments) may be stored in the core network (or sensing network element), or the base station, or in the tag participating in sensing, and needs to be called or transmitted during the sensing process. The first information may include at least one of the following: a list of tag IDs, status indication information for participation in sensing (which may be: a participation in sensing flag (indicating whether or not participation in sensing is currently possible or agreed upon), a sensing time period (indicating the start and end time / duration of participation in sensing), a sensing service occupancy flag (or equivalent status indication information, indicating whether sensing service is currently in progress), the range of tag incident angle and reflection angle (the incident angle range refers to the range of incident angles of the sensing signal that enables the tag to work normally; the reflection angle range refers to the range of reflection angles of the tag's reflected signal), the number of tags in the associated area, a list of tag location information (two-dimensional or three-dimensional, including the tag and the Cartesian coordinates or polar coordinates of the reference frame origin), a list of tag sensing distances, a list of tag communication bandwidths, a list of operating frequencies of each channel of the tag (i.e., subcarrier frequencies within the bandwidth), a list of tag modulation methods, supported read and write frequencies, a list of tag array forms (including the number of array elements in a single tag array (1 tag as 1 array element, the number of antennas in a single tag, and the antenna arrangement information of a single tag)), error statistical distribution parameters of the tag reflected signal phase, whether the tag is active, and the power information of active tags, etc.

[0274] Example 1

[0275] When the conversion from target measurement to target perception result is completed in the core network or application server:

[0276] If the first information is stored in the core network (or sensing network element), the core network (or sensing network element) directly calls the first information stored in itself and uses it in the conversion process as one of the bases for generating the sensing result;

[0277] If the first information is stored in the base station, the core network (or sensing network element) requires the base station to report the first information for its use in the conversion process, as one of the bases for generating sensing results;

[0278] If the first information is stored on a tag, the core network (or sensing network element) instructs UE B to perform operations such as selecting, storing, and accessing (reading and writing information) the tag. After reading the corresponding first information, UE B sends it to the core network (or sensing network element) as one of the bases for generating sensing results. Alternatively, the core network (or sensing network element) instructs UE A or the base station to perform operations such as selecting, storing, and accessing (reading and writing information) the tag. After reading the corresponding first information, UE A or the base station sends it to the core network (or sensing network element) as one of the bases for generating sensing results.

[0279] Example 2

[0280] When the conversion from target measurement to target perception result is completed at the base station:

[0281] If the first information is stored in the core network (or sensing network element), the core network (or sensing network element) will send the first information necessary for sensing to the base station as one of the base stations to generate sensing results;

[0282] If the first information is stored in the base station, the base station directly calls the first information stored in itself and uses it in the conversion process as one of the bases for generating the sensing results;

[0283] If the first information is stored on a tag, the core network (or sensing network element) instructs UE B to perform operations such as selecting, storing, and accessing (reading and writing information) the tag. After reading the corresponding first information, UE B sends it to the base station as one of the base station's bases for generating sensing results. Alternatively, the core network (or sensing network element) instructs UE A to perform operations such as selecting, storing, and accessing (reading and writing information) the tag. After reading the corresponding first information, UE A sends it to the base station as one of the base station's bases for generating sensing results.

[0284] Example 3

[0285] When the conversion from target measurement to target perception result is completed by the UE:

[0286] If the first information is stored in the core network (or sensing network element), the core network (or sensing network element) sends the first information necessary for sensing to UE B or UE A through non-access stratum (NAS) signaling; or the core network (or sensing network element) sends the tag prior information necessary for sensing to the associated base station of UE B or UE A, and the associated base station then sends the first information to UE B or UE A, and UE B or UE A uses the received first information as one of the bases for generating the sensing result;

[0287] If the first information is stored in the base station, the base station sends the first information to UE B or UE A, and UE B or UE A uses the received first information as one of the bases for generating the sensing result.

[0288] If the first information is stored on a tag, the core network (or sensing network element) instructs UE B or UE A to perform operations such as selecting, storing, and accessing (reading and writing information) the tag. UE B or UE A reads the corresponding first information and uses it as one of the bases for generating the sensing result. Alternatively, the core network (or sensing network element) instructs either UE B or UE A to perform operations such as selecting, storing, and accessing (reading and writing information) the tag, reads the corresponding first information, and sends it to the other party as one of the bases for generating the sensing result. Or, the core network (or sensing network element) instructs the base station to perform operations such as selecting, storing, and accessing (reading and writing information) the tag, reads the corresponding first information, and sends it to UE B as one of the bases for generating the sensing result.

[0289] It should be noted that when the relevant information of the tag is updated (such as tag movement (change of location coordinates), addition of a tag in the network, tag cancellation (expiration), etc.), the above process can also be used to realize communication between the core network (or sensing network element) - base station (BS) - tag, and obtain the current information of the tag according to the communication result, and update the prior information of the tag in the core network (or sensing network element) accordingly.

[0290] As an optional implementation, the method further includes:

[0291] The first device works with the wireless sensing signal transmitter and the wireless sensing signal receiver to perform reference measurements, wherein the reference measurements are used to obtain reference measurement quantities or reference measurement results, and the target sensing result is determined based on the target measurement quantity and the reference measurement quantity or reference measurement result.

[0292] For certain tag-based sensing services, reference measurements are required. The final sensing result is determined by combining the direct sensing result obtained after the sensing service is completed with the sensing result from the reference measurements. For example, for detecting, locating, and imaging objects within a tagged area, reference measurements are needed when the object is not in the area, with the corresponding measurements being the tag's reflected RSSI signal and phase. After the object enters the tagged area, another measurement is performed to complete the sensing process. Similarly, for sensing weather conditions (such as humidity and rainfall) within a tagged area, reference measurements are needed during a specific humidity level or a period without rainfall.

[0293] It should be noted that the process of performing reference measurements to obtain reference measurement quantities or reference measurement results is similar to the process of obtaining target measurement quantities or target measurement results. The difference is that the initiator of the reference measurement is not necessarily a third-party application, but can be the core network (or sensing network element), or a base station, or a UE, and the measurement environment may be different.

[0294] In implementation, the aforementioned reference measurement quantity or reference measurement result can be stored in the core network (or sensing network element) or on the tag participating in sensing, or it can be stored on the base station, so that the node that completes the target measurement quantity to the target measurement result can obtain the reference measurement quantity or reference measurement result. In addition, there is no strict requirement on the order of execution of reference measurement and sensing services. For example, the reference measurement can be executed first, and then the sensing service can be executed to correct the error of the target measurement quantity or target measurement result based on the reference measurement quantity or reference measurement result. Alternatively, the sensing service can be executed first, and then the reference measurement can be executed. Finally, the target sensing result is determined by combining the target measurement quantity and the reference measurement quantity or reference measurement result.

[0295] In this embodiment, the accuracy of the sensing results can be improved by using reference measurements to reduce sensing errors.

[0296] In some embodiments, the sensing signals in the above process can be sent by multiple base stations or UEs, and / or, the sensing signal receiver can also be multiple UEs, and / or, the number of tags participating in sensing can also be one or more; at this time, the core network needs to determine the set of base stations and UEs that send sensing signals, the set of tags participating in sensing, and the set of UEs that receive sensing signals, and send the sensing signal-related configuration information and tag-related information of multiple base stations and UEs to the corresponding multiple base stations and UEs respectively, and send the sensing signal-related measurement quantities and tag-related information of the receiving terminal that need to be measured to the corresponding multiple receiving UEs respectively.

[0297] Optionally, multiple transmitting base stations and UEs need to exchange configuration information related to sensing signals (for example, a base station or UE acting as a coordinator sends configuration information related to sensing signals and tag-related information for participating sensing to other transmitting base stations and UEs, and sends measurement quantities related to sensing signals and tag-related information for participating sensing to other receiving UEs). In the above process, the message interaction between the core network function or network element (such as sensing network function / sensing network element) and the UE can be through the base station, and the messages are transparent to the base station, such as NAS signaling.

[0298] As an optional implementation, before the first device backscatters the sensing signal to the wireless sensing signal receiver, the method further includes:

[0299] The first device receives the second sensing request message;

[0300] The first device outputs a second sensing response message, wherein the second sensing response message indicates that the first device agrees to participate in the sensing process corresponding to the second sensing request message and / or provide first information.

[0301] In some embodiments, the first device acquiring the second sensing request message may involve the first device receiving a second sensing request message from a base station / core network. The aforementioned output of a second sensing response message by the first device can be understood as: the first device generating a second sensing response message for the base station or other access devices to read; or, the second sensing response message being modulated onto a received wireless signal for the base station or other access devices to receive. For example, the base station / core network initially selects tags to participate in sensing based on sensing requirement information and sends a second sensing request message to the selected tags to read the participation status indication information from the tags. If the tag indicates agreement to participate in the sensing process, it can be identified as the first device participating in the sensing process; if the tag indicates disagreement, other tags can be selected.

[0302] The first device can receive the second sensing request message from the base station / core network and send a second sensing response message back to the base station / core network to inform the base station / core network whether the first device agrees to participate in the sensing process or whether it agrees to provide the first information.

[0303] In this embodiment, during the process of reflecting the sensing signal, the tag can choose to agree or refuse to participate in the sensing process and / or provide relevant prior information stored on the tag.

[0304] Of course, in practice, the first device can also use other methods to enable consent or refusal to participate in sensing and / or provide prior information stored on the tag.

[0305] For example, when the base station / core network determines the tag to participate in the sensing service (corresponding to step 3 above), the tag indicates agreement / refusal to participate in sensing and / or provides prior information stored on the tag through the status indication information of participation in sensing; or...

[0306] After the base station / core network determines the tags participating in the sensing service (corresponding to step 3 above), the base station performs operations such as selecting, storing, and accessing (reading and writing information) the tags. The tags indicate their agreement / refusal to provide the prior information stored on them through the status indication information of participating in sensing; or,

[0307] Whether a tag can participate in the relevant sensing service is agreed upon in advance and stored in the relevant storage node of the core network (e.g., Unified Data Repository (UDR)). After the core network function or network element (such as sensing network function / sensing network element) receives the sensing request and filters the tags that can participate in the sensing service (corresponding to step 3 above), it accesses the storage node that stores whether the associated tag can participate in the relevant sensing service, obtains information on whether the tag can participate in the relevant sensing service and / or provides information on the prior information stored on the tag.

[0308] Similar to the tag selection for agreeing or refusing to participate in the perception process mentioned above, the UE can also choose to agree or refuse to participate in the perception process. The method could be:

[0309] After the core network function or network element (such as a sensing network function / sensing element) sends a sensing request to the UE, the UE either agrees or refuses. From the UEs that agree to provide the sensing request, UEs participating in the sensing service are selected (corresponding to step 3 above); or...

[0310] After the base station / core network filters UEs to participate in the perception service (corresponding to step 3 above), it sends a participation request message to the associated UEs, and the UEs either agree or refuse; or...

[0311] Whether a UE can participate in the relevant sensing service is predetermined and stored in the relevant storage node of the core network, such as UDR. After the core network function or network element (such as sensing network function / sensing network element) receives the sensing request and filters the UEs that can participate in the sensing service (corresponding to step 3 above), it accesses the storage node associated with whether the UE can participate in the relevant sensing service to obtain the information on whether the UE can participate in the relevant sensing service.

[0312] In this embodiment, the first device backscatters the sensing signal to the wireless sensing signal receiver, wherein the sensing signal originates from the wireless sensing signal transmitter. Thus, by utilizing the backscattering function of the first device, at least a portion of the sensing signal transmitted by the wireless sensing signal transmitter is backscattered to the wireless sensing signal receiver, providing an additional sensing path for wireless sensing. Furthermore, the first device with backscattering capability does not require a power-consuming radio frequency link, thus exhibiting characteristics such as small size and low power consumption. Compared to the wireless sensing signal transmitter and receiver, it is easier to deploy in an ISAC system to improve the sensing performance of the ISAC system.

[0313] Please see Figure 4 This is a flowchart of the second wireless sensing method provided in the embodiments of this application, such as... Figure 4 The wireless sensing method shown is similar to... Figure 2The difference between the wireless sensing methods shown is that: Figure 4 The main body executing the wireless sensing method shown is the wireless sensing signal receiver, while... Figure 2 The wireless sensing method shown is executed by the first device, such as... Figure 4 As shown, the wireless sensing method executed by the wireless sensing signal receiver may include the following steps:

[0314] Step 401: The wireless sensing signal receiver acquires second information, which includes: sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information.

[0315] Step 402: The wireless sensing signal receiver measures the sensing signal sent by the wireless sensing signal transmitter, and at least part of which is backscattered by the first device, according to the sensing signal related configuration information, in order to obtain the target measurement quantity.

[0316] Step 403: The wireless sensing signal receiver determines the target sensing result based on the target measurement, or sends the target measurement.

[0317] The acquisition process of the above-mentioned sensing requirement information and / or sensing signal related configuration information, the transmission process of the sensing signal, and the conversion process from target measurement to target sensing result in the embodiments of this application are similar to those described above. Figure 2 The methods and embodiments shown are the same, and no specific limitations are made here.

[0318] In one optional implementation, the wireless sensing signal receiver measures the sensing signal transmitted by the wireless sensing signal transmitter, and at least partially backscattered by the first device, according to the sensing signal related configuration information, to obtain a target measurement quantity, including:

[0319] The wireless sensing signal receiver receives a sequence of target sensing signals from the wireless sensing signal transmitter, at least partially backscattered by the first device.

[0320] The wireless sensing signal receiver performs target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain the target measurement quantity. The sensing signal related configuration information includes the signal configuration information of the preset sensing signal sequence sent by the wireless sensing signal transmitter.

[0321] In this embodiment, the sensing signal transmitted by the wireless sensing signal transmitter is a preset sensing signal sequence with at least one of the signal parameters such as waveform, bit sequence, and frequency range predetermined. At this time, the first device can directly backscatter the preset sensing signal sequence transmitted by the wireless sensing signal transmitter to the wireless sensing signal receiver, so that the wireless sensing signal receiver can perform at least one of the target signal processing methods such as matched filtering, cross-correlation, and sliding correlation on the received target sensing signal sequence and the preset sensing signal sequence, thereby determining the target measurement quantity based on the result of the target signal processing.

[0322] Of course, in practice, the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device can be a conventional sensing signal. In this case, the wireless sensing signal receiver can measure the received sensing signal to obtain target measurement quantities such as receiving frequency, receiving time, and receiving power, and determine the target sensing result based on the target measurement quantities. In this embodiment, the backscattering function of the first device can be used to extend the transmission path of the sensing signal to improve the sensing range and sensing accuracy of the wireless sensing system.

[0323] In another alternative implementation, the wireless sensing signal transmitter can transmit first indication information and a sensing signal. The first indication information is used to instruct the first device to modulate first information on the sensing signal. Correspondingly, the wireless sensing signal receiver can demodulate the received sensing signal to obtain the first information carried by the sensing signal, that is, the target measurement quantity may include the first information.

[0324] In this embodiment, the first device can modulate pre-stored first information onto the sensing signal so that the wireless sensing signal receiver can use the first information as a target measurement quantity or directly use the first information as a target sensing result. This can improve the comprehensiveness of the sensing measurement quantity in the wireless sensing method and thus improve the sensing performance of the wireless sensing system.

[0325] Optionally, the target measurement includes:

[0326] Demodulated information backscattered from the first device; and / or

[0327] Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

[0328] Optionally, the sensing signal-related configuration information includes at least one of the following:

[0329] Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

[0330] Optionally, the target measurement includes:

[0331] The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following:

[0332] The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

[0333] Optionally, the method further includes:

[0334] The wireless sensing signal receiver receives the target operation command;

[0335] The wireless sensing signal receiver reads the first information of the first device according to the target operation command and sends the first information to the second device, wherein the target sensing result is the sensing result determined by the second device based on the target measurement result and the first information.

[0336] This implementation method is similar to... Figure 2 In the illustrated method embodiment, the process of SNF scheduling a base station or UE to read relevant information pre-stored in the first device is similar and will not be specifically limited here.

[0337] Optionally, before the wireless sensing signal receiver measures the sensing signal transmitted by the wireless sensing signal transmitter, and at least partially backscattered by the first device, according to the sensing signal related configuration information, to obtain the target measurement quantity, the method further includes:

[0338] In response to receiving the sensing requirement information or the first sensing request message, the wireless sensing signal receiver sends a first sensing response message, wherein the first sensing response message indicates that the wireless sensing signal receiver agrees to participate in the sensing process corresponding to the sensing requirement information or the first sensing request message.

[0339] This embodiment, and as shown in the example Figure 2 In the illustrated method embodiments, the UE or base station chooses to agree or refuse to participate in the sensing process in a similar manner, which will not be elaborated on here.

[0340] Optionally, before the wireless sensing signal receiver measures the sensing signal transmitted by the wireless sensing signal transmitter, and at least partially backscattered by the first device, according to the sensing signal related configuration information, to obtain the target measurement quantity, the method further includes:

[0341] The wireless sensing signal receiver works with the wireless sensing signal transmitter and the first device to perform reference measurements in order to obtain reference measurement quantities.

[0342] The wireless sensing signal receiver determines the reference sensing result based on the reference measurement, or sends the reference measurement.

[0343] This embodiment, and as shown in the example Figure 2 The reference sensing process in the illustrated method embodiments is similar and will not be elaborated upon here.

[0344] The second wireless sensing method provided in this application embodiment is similar to... Figure 2 The methods and embodiments shown correspond to each other and can achieve similar beneficial effects. To avoid repetition, they will not be described again here.

[0345] Please see Figure 5 This is a flowchart of the third wireless sensing method provided in the embodiments of this application, such as... Figure 5 The method embodiments shown are similar to those described above. Figure 2 The difference in the method embodiments shown is that, as Figure 5 The execution subject of the method embodiment shown is the second device, while as Figure 2 The execution subject of the method embodiment shown is a first device, such as... Figure 5 As shown, the wireless sensing method performed by the second device may include the following steps:

[0346] Step 501: The second device acquires the sensing demand information.

[0347] Step 502: The second device sends second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver. The second information includes: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information.

[0348] Step 503: The second device acquires at least one of the target measurement quantity and the target perception result, wherein the target measurement quantity is the measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device, and the target perception result is determined based on the target measurement quantity.

[0349] The acquisition process of the above-mentioned sensing requirement information and / or sensing signal related configuration information, the transmission process of the sensing signal, and the conversion process from target measurement to target sensing result in the embodiments of this application are similar to those described above. Figure 2 The methods and embodiments shown are the same, and no specific limitations are made here.

[0350] Optionally, before the second device sends the second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, the third wireless sensing method further includes:

[0351] The second device determines the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device based on the sensing requirement information.

[0352] In this embodiment, as... Figure 2 In the method embodiments shown, the process by which core network functions or network elements (such as sensing network functions / sensing network elements) determine the associated base stations, associated UEs, and tags participating in sensing based on sensing requirements is similar and will not be described again here.

[0353] Optionally, the target measurement includes:

[0354] Demodulated information backscattered from the first device; and / or,

[0355] Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

[0356] Optionally, the second device acquires at least one of the target measurement and the target perception result, including:

[0357] The second device acquires the target measurement and determines the target perception result based on the target measurement; or,

[0358] The second device acquires the target measurement and the first information from the first device, and determines the target perception result based on the target measurement and the first information; or,

[0359] The second device receives a target perception result from any of the following:

[0360] The wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side equipment connected to the wireless sensing signal transmitter, the network-side equipment connected to the wireless sensing signal receiver, and the target core network element.

[0361] In practice, the second device may obtain the first information of the first device by reading the EPC code or tagID of the selected tag participating in the sensing process through the tag's serving base station or associated base station, and determining the prior information of the selected target tag from a large amount of pre-stored prior information of tags accordingly; or, by reading the prior information of the selected tag through the tag's serving base station or associated base station.

[0362] The embodiments of this application are similar to those described above. Figure 2 In the method embodiment shown, the process by which the core network, base station, and UE determine the target perception result based on the target measurement quantity, or the target measurement quantity and the first information, is similar and will not be described again here.

[0363] Optionally, the second device determines the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device based on the sensing requirement information, including:

[0364] The second device acquires third information, wherein the third information includes: fourth information of each terminal in the communication connection, fifth information of each network-side device in the communication connection, and first information of each first device in the communication connection, wherein the fourth information includes at least one of the capability information and location information of the corresponding terminal, and the fifth information includes at least one of the capability information and location information of the corresponding network-side device;

[0365] The second device determines the sensing type based on the third information and the sensing requirement information;

[0366] The second device determines the wireless sensing signal transmitter and the wireless sensing signal receiver that match the sensing type based on at least one of the fourth and fifth information.

[0367] The second device determines the first device based on the first information.

[0368] Optionally, the perception type includes any of the following:

[0369] The terminal receives a sensing signal sent by another terminal or network-side device, and at least part of it is backscattered by the first device;

[0370] A network-side device receives a sensing signal sent by another network-side device or terminal, which is at least partially backscattered by the first device.

[0371] The terminal or network-side device sends a sensing signal and receives at least a portion of the sensing signal backscattered by the first device.

[0372] This embodiment, and as shown in the example Figure 2 In the illustrated method embodiment, the process by which the core network function or network element (such as the sensing network function / sensing network element) determines the associated base station, associated UE, and tag to participate in sensing based on sensing requirements, the location information and / or capability information of each base station and UE, and the prior information and / or capability information of the tag is similar and will not be described again here.

[0373] Optionally, when the sensing type is a sensing signal received by a terminal from another terminal or network-side device and at least partially backscattered by the first device, the wireless sensing transmitter includes at least one of the first network-side device and the first terminal, and the wireless sensing receiver includes the second terminal.

[0374] Optionally, the terminals in the wireless sensing transmitter and the wireless sensing receiver satisfy at least one of the following conditions:

[0375] The terminal's capability information satisfies the sensing requirements;

[0376] The location information of the terminal satisfies the sensing requirements;

[0377] The terminal accesses a network-side device that meets the sensing requirements.

[0378] And / or,

[0379] The network-side device in the wireless sensing transmitter meets at least one of the following conditions:

[0380] The capability information of the network-side device satisfies the sensing requirements;

[0381] The location information of the network-side device satisfies the sensing requirements;

[0382] The network-side device is the network-side device that the terminal accesses to meet the sensing requirements;

[0383] And / or,

[0384] The first device satisfies at least one of the following conditions:

[0385] The first device is connected to a terminal or network-side device that meets the sensing requirements;

[0386] The prior information of the first device satisfies the sensing requirements;

[0387] The capability information of the first device satisfies the sensing requirements.

[0388] Optionally, the second device obtains the first information in the following manner:

[0389] The second device sends a target operation command in the sensing requirement information to the wireless sensing signal transmitter, and receives the first information from the wireless sensing signal receiver. The target operation command is used to control the first device to carry the first information in the backscattered sensing signal.

[0390] or,

[0391] The second device sends sensing signal-related configuration information to the wireless sensing signal transmitter based on the sensing requirement information containing the target operation command, and receives the first information from the wireless sensing signal receiver.

[0392] or,

[0393] The second device sends a second indication message to the network-side device or terminal to which the first device is connected, and receives the first information from the network-side device or terminal to which the first device is connected, wherein the second indication message is used to instruct the network-side device or terminal to which the first device is connected to read the first information;

[0394] or,

[0395] The second device acquires the first information that has been pre-stored.

[0396] Optionally, the method further includes at least one of the following:

[0397] The second device invokes the associated base station of the first device to perform a second process on the first device through the associated base station. The second process includes at least one of the following: reading the first information, writing the first information, storing the first information, providing power to the first device, controlling the first device that meets the sensing conditions corresponding to the sensing requirement information to be in an active state, and controlling the first device that does not meet the sensing conditions to be in an inactive state. The first device is located within the read / write range of the associated base station.

[0398] The second device performs a first process on the pre-stored first information, wherein the first process includes at least one of updating, deleting, and adding.

[0399] Optionally, the third wireless sensing method further includes:

[0400] The second device acquires a reference measurement or a reference measurement result;

[0401] The reference measurement quantity is the measurement quantity transmitted by the wireless sensing signal receiver and the wireless sensing signal transmitter, and the measurement quantity obtained by the first device through performing a reference sensing process. The target sensing result is determined based on the target measurement quantity and the reference measurement quantity.

[0402] Optionally, the second device acquires a reference measurement or a reference measurement result, including:

[0403] The second device obtains a pre-stored reference measurement or reference measurement result from at least one of the following:

[0404] The wireless sensing signal transmitter, the wireless sensing signal receiver, the first device, the network-side device accessed by the wireless sensing signal transmitter, the network-side device accessed by the wireless sensing signal receiver, the network-side device or terminal accessed by the first device, and the target core network element.

[0405] Optionally, the second device acquires sensing demand information, including:

[0406] The second device acquires sensing demand information sent or forwarded by the target core network element, wherein the target core network element includes: application server, access and mobility management function (AMF) network element or network management system.

[0407] Optionally, before the second device sends the second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, the method further includes:

[0408] The second device acquires target capability information, which includes at least one of the capability information of the wireless sensing signal transmitter, the capability information of the wireless sensing signal receiver, and the capability information of the first device.

[0409] The second device determines the relevant configuration information of the sensing signal based on the target capability information and the sensing requirement information;

[0410] or,

[0411] The second device sends first recommendation information to the wireless sensing signal transmitter based on the sensing requirement information, and receives the sensing signal-related configuration information from the wireless sensing signal transmitter.

[0412] or,

[0413] The second device receives second recommendation information from the wireless sensing signal transmitter, and determines the sensing signal-related configuration information based on the second recommendation information and the sensing requirement information;

[0414] or,

[0415] The second device receives first configuration information from the wireless sensing signal transmitter and determines second configuration information based on the sensing requirement information, wherein the sensing signal related configuration information includes the first configuration information and the second configuration information.

[0416] In some embodiments, the process by which the second device sends first recommendation information to the wireless sensing signal transmitter based on the sensing demand information and receives sensing signal-related configuration information from the wireless sensing signal transmitter is similar to... Figure 2 In the method embodiment shown, the core network recommends sensing signal-related configuration information to the base station (corresponding to the sensing signal transmission method of the base station sending sensing signals) or UE A (corresponding to the sensing signal transmission method of the UE A sending sensing signals) according to the sensing requirements. The base station or UE A ultimately decides that the sensing signal-related configuration information is similar, and no specific limitation is made here.

[0417] In other embodiments, the process by which the second device receives second recommendation information from the wireless sensing signal transmitter and determines the sensing signal-related configuration information based on the second recommendation information and the sensing requirement information is similar to... Figure 2 In the method embodiment shown, the base station (corresponding to the sensing signal transmission method of the base station sending sensing signals) or UE A (corresponding to the sensing signal transmission method of UE A sending sensing signals) recommends sensing signal-related configuration information to the core network according to the sensing requirements. The core network ultimately decides that the sensing signal-related configuration information is similar, and no specific limitation is made here.

[0418] Optionally, the sensing signal-related configuration information includes at least one of the following:

[0419] Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

[0420] Optionally, the target measurement includes:

[0421] The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following:

[0422] The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

[0423] Optionally, the target measurement quantity may also include a second measurement quantity collected by the first device, wherein the first device also has an information collection function.

[0424] In practice, the second device can call the associated base station of the first device to read the second measurement quantity collected by the first device, or it can demodulate the second measurement quantity from the sensing signal backscattered by the first device, which will not be elaborated here.

[0425] Optionally, the target measurement quantity corresponds one-to-one with a sensing antenna or sensing resource.

[0426] Optionally, the second device sends second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, including:

[0427] The second device sends second information to the wireless sensing signal transmitter, wherein the wireless sensing signal transmitter is used to forward the second information to the wireless sensing signal receiver;

[0428] or,

[0429] The second device sends second information to the wireless sensing signal transmitter and sends measurement requirement information to the wireless sensing signal receiver, wherein the measurement requirement information indicates the measurement quantity related to the sensing signal that the wireless sensing signal receiver needs to measure.

[0430] Optionally, the second device acquires at least one of the target measurement and the target perception result, including at least one of the following:

[0431] The second device receives a target measurement from the wireless sensing signal receiver or the wireless sensing signal transmitter, and sends the target measurement to the core network or application server, wherein the target sensing result is determined by the core network or application server based on the target measurement.

[0432] The second device receives a target measurement from the wireless sensing signal receiver or the wireless sensing signal transmitter, and determines the target sensing result based on the target measurement.

[0433] The second device receives target perception results from the wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side device accessed by the wireless sensing signal receiver, or the network-side device accessed by the wireless sensing signal transmitter, wherein the target perception results are determined by the wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side device accessed by the wireless sensing signal receiver, or the network-side device accessed by the wireless sensing signal transmitter based on the target measurement.

[0434] The third wireless sensing method provided in this application embodiment is similar to... Figure 2 and Figure 4 The methods and embodiments shown correspond to each other and can achieve similar beneficial effects. To avoid repetition, they will not be described again here.

[0435] To facilitate the explanation of the wireless sensing method provided in the embodiments of this application, as follows: Figure 6 and Figure 7 The wireless sensing method provided in this application will be illustrated using the information interaction diagram shown below as an example:

[0436] Example 1

[0437] like Figure 6In the illustrated embodiment, assuming the UE receives a sensing signal transmitted by the gNB and at least partially backscattered by the tag, and the SNF performs the conversion from target measurement to target sensing result, the wireless sensing method includes the following interaction process:

[0438] 1. The AMF and / or SNF acquire the capability information of the UE and gNB;

[0439] 2. The gNB and / or UE obtains a perception service request (including first information) from the SNF;

[0440] 3. The gNB sends the sensing signal-related configuration information to the UE;

[0441] 4a. The gNB transmits a sensing signal (e.g., a reference signal);

[0442] 4b. Tag (which can be one or at least two tags) backscatters the sensing signal;

[0443] 5. The UE processes the sensing signal backscattered by the tag to obtain the target measurement quantity;

[0444] 6. The UE sends a measurement report (including the target measurement quantity) to the SNF;

[0445] 7. SNF calculates the target perception result based on the target measurement.

[0446] Example 2

[0447] like Figure 7 In the illustrated embodiment, assuming UE B receives a sensing signal sent by UE A, which is at least partially backscattered by the tag, and the conversion from target measurement to target sensing result is completed by the SNF, the wireless sensing method includes the following interaction process:

[0448] 1. The AMF and / or SNF acquire the capability information of the UE (including UE A and UE B);

[0449] 2. UE A and / or UE B obtain a perception service request (including first information) from the SNF;

[0450] 3. UE A sends sensing signal-related configuration information to UE B;

[0451] 4a. UE A transmits sensing signals (e.g., reference signals);

[0452] 4b. Tag (which can be one or at least two tags) backscatters the sensing signal;

[0453] 5. UE B processes the sensing signal backscattered by the tag to obtain the target measurement;

[0454] 6. UE B sends a measurement report (including target measurements) to SNF;

[0455] 7. SNF calculates the target perception result based on the target measurement.

[0456] This application also provides a wireless sensing system, including: a first device, a wireless sensing signal transmitter, and a wireless sensing signal receiver;

[0457] At least one of the wireless sensing signal transmitter and the wireless sensing signal receiver is used to acquire second information, the second information including: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information;

[0458] The wireless sensing signal transmitter is used to determine the sensing signal-related configuration information based on the sensing requirement information, and to transmit the sensing signal based on the sensing signal-related configuration information; or, the wireless sensing signal transmitter is used to transmit the sensing signal based on the acquired sensing signal-related configuration information.

[0459] The first device is used to backscatter the sensed signal;

[0460] The wireless sensing signal receiver is used to measure the sensing signal transmitted by the wireless sensing signal transmitter, which is at least partially backscattered by the first device, in order to obtain the target measurement quantity.

[0461] In specific implementation, the aforementioned wireless sensing signal transmitting end can be a network-side device (e.g., a base station or a Transmit Receive Point (TRP)) or a terminal, and the aforementioned wireless sensing signal receiving end can also be a network-side device (e.g., a base station or a TRP) or a terminal. Specifically, the wireless sensing signal transmitting end can be a first network-side device or a first terminal, and the wireless sensing signal receiving end can be a second network-side device, a second terminal, or the first network-side device or a first terminal.

[0462] The first device described in this embodiment can perform the following: Figure 2 In the various processes described in the method embodiments, the aforementioned wireless sensing signal receiver can perform, as follows: Figure 4 The various processes in the method embodiments shown will not be described again here.

[0463] Optionally, the wireless sensing system further includes: a second device;

[0464] The second device is communicatively connected to the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device, respectively.

[0465] The second device is used to acquire the sensing requirement information and send the sensing requirement information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, or to determine the sensing signal related configuration information based on the sensing requirement information and send the sensing signal related configuration information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver.

[0466] In this embodiment, the second device described above can perform the following: Figure 5 The various processes in the method embodiments shown will not be described again here.

[0467] Furthermore, the wireless sensing signal transmitter is also used to send first indication information to the first device. The first indication information is used to indicate that the first device needs to feed back first information to the wireless sensing signal receiver. Specifically, the first device is used to modulate the first information onto the sensing signal so that the wireless sensing signal receiver can receive the modulated sensing signal.

[0468] In this embodiment, the first device can perform corresponding modulation and backscattering processing on the sensing signal according to the instruction of the wireless sensing signal transmitter.

[0469] Optionally, the second device includes at least one of the following:

[0470] Sensing functional entities or sensing network elements in the core network;

[0471] Sensing functional entities or sensing network elements in the access network.

[0472] Optionally, the sensing signal transmitted by the wireless sensing signal transmitter is a preset sensing signal sequence. The wireless sensing signal receiver is specifically used to receive the target sensing signal sequence from the wireless sensing signal transmitter, which is at least partially backscattered by the first device, and to perform target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain the target measurement quantity. The sensing signal related configuration information includes the signal configuration information of the preset sensing signal sequence.

[0473] This implementation method is similar to, for example Figure 4 The implementation method described in the illustrated embodiment is as follows: The wireless sensing signal receiver receives a target sensing signal sequence from the wireless sensing signal transmitter, which is at least partially backscattered by the first device, and performs target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain a target measurement quantity corresponding to the target, and can achieve the same beneficial effect, which will not be elaborated here.

[0474] Optionally, the first device includes at least one of a backscatter tag and a radio frequency identification (RFID) tag.

[0475] Optionally, the wireless sensing signal transmitting end includes a first network-side device or a first terminal, and the wireless sensing signal receiving end includes a second terminal.

[0476] Optionally, the first node is used to determine the target perception result based on the target measurement, wherein the first node includes at least one of: the wireless sensing signal transmitter, the wireless sensing signal receiver, the second device, a network-side device accessed by the first terminal, or a network-side device accessed by the second terminal; or,

[0477] The wireless sensing system further includes a target core network element, wherein the first node is used to send the target measurement quantity to the target core network element, and the target core network element is used to determine the target sensing result based on the target measurement quantity.

[0478] Optionally, the second node is used to send reference measurement quantities or reference measurement results to the first node or the first core network element;

[0479] The first node or the first core network element determines the target perception result based on the reference measurement or reference measurement result and the target measurement. The second node includes at least one of the following: the wireless sensing signal transmitter, the wireless sensing signal receiver, the second device, the network-side device accessed by the first terminal or the network-side device accessed by the second terminal, the first device, and the network-side device or terminal accessed by the first device.

[0480] Optionally, the target core network element includes: an application server, an access and mobility management function (AMF) network element, or a network management system.

[0481] Optionally, the terminals in the wireless sensing signal transmitter and the wireless sensing signal receiver satisfy at least one of the following conditions:

[0482] The terminal's capability information satisfies the sensing requirements;

[0483] The location information of the terminal satisfies the sensing requirements;

[0484] The terminal accesses a network-side device that meets the sensing requirements.

[0485] And / or,

[0486] The network-side device in the wireless sensing transmitter meets at least one of the following conditions:

[0487] The capability information of the network-side device satisfies the sensing requirements;

[0488] The location information of the network-side device satisfies the sensing requirements;

[0489] The network-side device is the network-side device that the terminal accesses to meet the sensing requirements;

[0490] And / or,

[0491] The first device satisfies at least one of the following conditions:

[0492] The first device is connected to a terminal or network-side device that meets the sensing requirements;

[0493] The prior information of the first device satisfies the sensing requirements;

[0494] The capability information of the first device satisfies the sensing requirements.

[0495] Optionally, the first device is attached to the sensing target corresponding to the sensing demand information, or the first device is located within the target sensing area corresponding to the sensing demand information.

[0496] The wireless sensing system provided in this application embodiment is capable of performing the following: Figure 2 , Figure 4 and Figure 5 The various processes in the illustrated method embodiments can achieve the same beneficial effects, so I will avoid repeating them here.

[0497] The wireless sensing method provided in this application can be executed by a wireless sensing device. This application uses the example of a wireless sensing device executing the wireless sensing method to illustrate the wireless sensing device provided in this application.

[0498] like Figure 8 As shown, the first wireless sensing device provided in this application embodiment can be applied to a first device, such as... Figure 8 As shown, the first wireless sensing device 800 may include the following modules:

[0499] The backscattering module 801 is used to backscatter the sensing signal to the wireless sensing signal receiver, wherein the sensing signal comes from the wireless sensing signal transmitter.

[0500] Optionally, the first wireless sensing device 800 also includes:

[0501] The first receiving module is configured to receive first indication information from the wireless sensing signal transmitting end, wherein the first indication information is configured to indicate that the first device needs to feed back first information to the wireless sensing signal receiving end;

[0502] The backscattering module 801 is specifically used for:

[0503] The first information is modulated onto the sensing signal so that the wireless sensing signal receiver can receive the modulated sensing signal.

[0504] Optionally, the first device includes at least one of a backscatter tag and a radio frequency identification (RFID) tag.

[0505] Optionally, the first information includes at least one of the following: the identifier of the first device, the status indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag bit, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read and write frequencies supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmit antennas of a single first device, the number of receive antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, the frequency modulation capability of the first device, the encryption algorithm type of the first device, and the type and corresponding coding rate of the forward error correction code (FEC) of the channel coding of the first device.

[0506] Optionally, the first wireless sensing device 800 also includes:

[0507] The fourth acquisition module is used to acquire the second perception request message;

[0508] The output module is used to output a second sensing response message, wherein the second sensing response message indicates that the first device agrees to participate in the sensing process corresponding to the second sensing request message and / or provide first information.

[0509] Optionally, the first device also has an information collection function, and the first wireless sensing device 800 further includes:

[0510] The collection module is used to acquire a second measurement quantity corresponding to the perceived target, wherein the first information includes the second measurement quantity.

[0511] Optionally, the first wireless sensing device 800 also includes:

[0512] The first reference measurement module is used to cooperate with the wireless sensing signal transmitter and the wireless sensing signal receiver to perform reference measurement, wherein the reference measurement is used to obtain a reference measurement quantity or a reference measurement result, and the target sensing result is determined based on the target measurement quantity and the reference measurement quantity or the reference measurement result.

[0513] The first wireless sensing device 800 provided in this application embodiment is capable of performing the following... Figure 2 In the method embodiment shown, the various processes executed by the first device can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0514] like Figure 9 As shown, the second type of wireless sensing device provided in this application embodiment can be applied to a wireless sensing signal receiving end, such as... Figure 9 As shown, the second type of wireless sensing device 900 may include the following modules:

[0515] The first acquisition module 901 is used to acquire second information, the second information including: perception demand information, and / or, perception signal related configuration information corresponding to the perception demand information;

[0516] Measurement module 902 is used to measure the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, so as to obtain the target measurement quantity;

[0517] The execution module 903 is used to determine the target perception result based on the target measurement, or to send the target measurement.

[0518] Optionally, the measurement module 902 includes:

[0519] A receiving unit is configured to receive a sequence of target sensing signals from a wireless sensing signal transmitter, at least partially backscattered by a first device.

[0520] The signal processing unit performs target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain the target measurement quantity. The sensing signal related configuration information includes the signal configuration information of the preset sensing signal sequence transmitted by the wireless sensing signal transmitter.

[0521] Optionally, the target measurement includes:

[0522] Demodulated information backscattered from the first device; and / or,

[0523] Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

[0524] Optionally, the sensing signal-related configuration information includes at least one of the following:

[0525] Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

[0526] Optionally, the target measurement includes:

[0527] The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following:

[0528] The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

[0529] Optionally, the second wireless sensing device 900 also includes:

[0530] The second receiving module is used to receive target operation commands;

[0531] The reading module is used to read the first information of the first device according to the target operation command, and send the first information to the second device, wherein the target perception result is the perception result determined by the second device based on the target measurement result and the first information.

[0532] Optionally, the second wireless sensing device 900 also includes:

[0533] The response module is used to send a first perception response message in response to receiving the perception requirement information or the first perception request message, wherein the first perception response message indicates that the wireless perception signal receiver agrees to participate in the perception process corresponding to the perception requirement information or the first perception request message.

[0534] Optionally, the second wireless sensing device 900 also includes:

[0535] The second reference measurement module is used to cooperate with the wireless sensing signal transmitter and the first device to perform reference measurement in order to obtain reference measurement quantities.

[0536] The first determining module is used to determine the reference sensing result based on the reference measurement, or to send the reference measurement.

[0537] The second wireless sensing device 900 provided in this application embodiment is capable of performing the following... Figure 4 In the method embodiment shown, the various processes executed by the wireless sensing signal receiver can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0538] The first wireless sensing device 800 or the second wireless sensing device 900 in the embodiments of this application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the terminal can be, but is not limited to, the type of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of this application.

[0539] like Figure 10 As shown, the third wireless sensing device provided in this application embodiment can be applied to a second device, such as... Figure 10 As shown, the third type of wireless sensing device 1000 may include the following modules:

[0540] The second acquisition module 1001 is used to acquire perceived demand information;

[0541] The second sending module 1002 is used to send second information to at least one of the wireless sensing signal sending end and the wireless sensing signal receiving end, the second information including: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information;

[0542] The third acquisition module 1003 is used to acquire at least one of a target measurement quantity and a target perception result, wherein the target measurement quantity is the measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least part of it being backscattered by the first device, and the target perception result is determined based on the target measurement quantity.

[0543] Optionally, the third wireless sensing device 1000 also includes:

[0544] The second determining module is used to determine the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device based on the sensing requirement information.

[0545] Optionally, the target measurement includes:

[0546] Demodulated information backscattered from the first device; and / or,

[0547] Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

[0548] Optionally, the third acquisition module 1003 is specifically used for:

[0549] Acquire the target measurement and determine the target perception result based on the target measurement; or,

[0550] Acquire the target measurement and the first information of the first device, and determine the target perception result based on the target measurement and the first information; or,

[0551] Receive target perception results from any of the following:

[0552] The wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side equipment connected to the wireless sensing signal transmitter, the network-side equipment connected to the wireless sensing signal receiver, and the target core network element.

[0553] Optionally, the second determining module includes:

[0554] An acquisition unit is configured to acquire third information, wherein the third information includes: fourth information of each terminal in the communication connection, fifth information of each network-side device in the communication connection, and first information of each first device in the communication connection, wherein the fourth information includes at least one of capability information and location information of the corresponding terminal, and the fifth information includes at least one of capability information and location information of the corresponding network-side device;

[0555] The second determining unit is used to determine the sensing type based on the third information and the sensing requirement information;

[0556] The third determining unit is configured to determine, based on at least one of the fourth and fifth information, the wireless sensing signal transmitter and the wireless sensing signal receiver that match the sensing type.

[0557] The fourth determining unit is used to determine the first device based on the first information.

[0558] Optionally, the perception type includes any of the following:

[0559] The terminal receives a sensing signal sent by another terminal or network-side device, and at least part of it is backscattered by the first device;

[0560] A network-side device receives a sensing signal sent by another network-side device or terminal, which is at least partially backscattered by the first device.

[0561] The terminal or network-side device sends a sensing signal and receives at least a portion of the sensing signal backscattered by the first device.

[0562] Optionally, when the sensing type is a sensing signal sent by another terminal or network-side device and at least partially backscattered by the first device, the wireless sensing transmitter includes at least one of the first network-side device and the first terminal, and the wireless sensing receiver includes the second terminal.

[0563] Optionally, the terminals in the wireless sensing transmitter and the wireless sensing receiver satisfy at least one of the following conditions:

[0564] The terminal's capability information satisfies the sensing requirements;

[0565] The location information of the terminal satisfies the sensing requirements;

[0566] The terminal accesses a network-side device that meets the sensing requirements.

[0567] And / or,

[0568] The network-side device in the wireless sensing transmitter meets at least one of the following conditions:

[0569] The capability information of the network-side device satisfies the sensing requirements;

[0570] The location information of the network-side device satisfies the sensing requirements;

[0571] The network-side device is the network-side device that the terminal accesses to meet the sensing requirements;

[0572] And / or,

[0573] The first device satisfies at least one of the following conditions:

[0574] The first device is connected to a terminal or network-side device that meets the sensing requirements;

[0575] The prior information of the first device satisfies the sensing requirements;

[0576] The capability information of the first device satisfies the sensing requirements.

[0577] Optionally, the second device obtains the first information in the following manner:

[0578] The second device sends a target operation command in the sensing requirement information to the wireless sensing signal transmitter, and receives the first information from the wireless sensing signal receiver. The target operation command is used to control the first device to carry the first information in the backscattered sensing signal.

[0579] or,

[0580] The second device sends sensing signal-related configuration information to the wireless sensing signal transmitter based on the sensing requirement information containing the target operation command, and receives the first information from the wireless sensing signal receiver.

[0581] or,

[0582] The second device sends a second indication message to the network-side device or terminal to which the first device is connected, and receives the first information from the network-side device or terminal to which the first device is connected, wherein the second indication message is used to instruct the network-side device or terminal to which the first device is connected to read the first information;

[0583] or,

[0584] The second device acquires the first information that has been pre-stored.

[0585] Optionally, the third wireless sensing device 1000 also includes at least one of the following:

[0586] The calling module is used to call the associated base station of the first device and perform a second processing on the first device through the associated base station. The second processing includes at least one of the following: reading the first information, writing the first information, storing the first information, providing power to the first device, controlling the first device that meets the sensing conditions corresponding to the sensing requirement information to be in an active state, and controlling the first device that does not meet the sensing conditions to be in an inactive state. The first device is located within the read and write range of the associated base station.

[0587] The processing module is configured to perform a first processing on the pre-stored first information, wherein the first processing includes at least one of updating, deleting, and adding.

[0588] Optionally, the third wireless sensing device 1000 also includes:

[0589] The fifth acquisition module is used to acquire reference measurements or reference measurement results;

[0590] The reference measurement quantity is the measurement quantity transmitted by the wireless sensing signal receiver and the wireless sensing signal transmitter, and the measurement quantity obtained by the first device through performing a reference sensing process. The target sensing result is determined based on the target measurement quantity and the reference measurement quantity.

[0591] Optionally, the fifth acquisition module is specifically used for:

[0592] Obtain a pre-stored reference measurement or reference measurement result from at least one of the following:

[0593] The wireless sensing signal transmitter, the wireless sensing signal receiver, the first device, the network-side device accessed by the wireless sensing signal transmitter, the network-side device accessed by the wireless sensing signal receiver, the network-side device or terminal accessed by the first device, and the target core network element.

[0594] Optionally, the second acquisition module 1001 is specifically used for:

[0595] Acquire sensing demand information sent or forwarded by target core network elements, wherein the target core network elements include: application servers, access and mobility management function (AMF) network elements, or network management systems.

[0596] Optionally, the third wireless sensing device 1000 also includes:

[0597] The sixth acquisition module is used to acquire target capability information, which includes at least one of the capability information of the wireless sensing signal transmitter, the capability information of the wireless sensing signal receiver, and the capability information of the first device.

[0598] The third determining module is used to determine the relevant configuration information of the sensing signal based on the target capability information and the sensing requirement information;

[0599] or,

[0600] The transmission module is used to send first recommendation information to the wireless sensing signal transmitter based on the sensing requirement information, and to receive sensing signal-related configuration information from the wireless sensing signal transmitter.

[0601] or,

[0602] The fourth determining module is used to receive second recommendation information from the wireless sensing signal transmitter, and determine the sensing signal related configuration information based on the second recommendation information and the sensing requirement information;

[0603] or,

[0604] The fifth determining module is used to receive first configuration information from the wireless sensing signal transmitting end and determine second configuration information according to the sensing requirement information, wherein the sensing signal related configuration information includes the first configuration information and the second configuration information.

[0605] Optionally, the sensing signal-related configuration information includes at least one of the following:

[0606] Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

[0607] Optionally, the target measurement includes:

[0608] The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following:

[0609] The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

[0610] Optionally, the target measurement quantity may also include a second measurement quantity collected by the first device, wherein the first device also has an information acquisition function.

[0611] Optionally, the target measurement quantity corresponds one-to-one with a sensing antenna or sensing resource.

[0612] Optionally, the second transmitting module 1002 is specifically used for:

[0613] Sending second information to the wireless sensing signal transmitter, wherein the wireless sensing signal transmitter is used to forward the second information to the wireless sensing signal receiver;

[0614] or,

[0615] The system sends second information to the wireless sensing signal transmitter and measurement requirement information to the wireless sensing signal receiver, wherein the measurement requirement information indicates the measurement quantity related to the sensing signal that the wireless sensing signal receiver needs to measure.

[0616] Optionally, the third acquisition module 1003 includes at least one of the following:

[0617] The first transmission unit is configured to receive a target measurement from the wireless sensing signal receiver or the wireless sensing signal transmitter, and send the target measurement to the core network or application server, wherein the target sensing result is determined by the core network or application server based on the target measurement.

[0618] The second transmission unit is used to receive the target measurement quantity from the wireless sensing signal receiver or the wireless sensing signal transmitter, and determine the target sensing result based on the target measurement quantity.

[0619] The third transmission unit is used to receive target perception results from the wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side device accessed by the wireless sensing signal receiver, or the network-side device accessed by the wireless sensing signal transmitter, wherein the target perception results are determined by the wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side device accessed by the wireless sensing signal receiver, or the network-side device accessed by the wireless sensing signal transmitter based on the target measurement.

[0620] The third wireless sensing device 1000 provided in this application embodiment is capable of performing the following... Figure 5 In the method embodiment shown, the second device performs each process and can achieve the same beneficial effect. To avoid repetition, it will not be described again here.

[0621] Optional, such as Figure 11As shown in the illustration, this application also provides a communication device 1100, including a processor 1101 and a memory 1102. The memory 1102 stores programs or instructions that can run on the processor 1101. For example, when the communication device 1100 is a terminal, the program or instructions are implemented when executed by the processor 1101. Figure 4 The various steps of the illustrated method embodiment can achieve the same technical effect. Alternatively, when the communication device 1100 is a network-side device, the program or instructions executed by the processor 101 will implement the following... Figure 4 or Figure 5 The various steps of the method embodiment shown, or, when the communication device 1100 is a backscatter communication device, when the program or instructions are executed by the processor 101, are implemented as follows: Figure 2 The steps of the method embodiment shown are the same and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0622] This application embodiment also provides a terminal, including a processor and a communication interface. When the wireless sensing signal receiver is the terminal, the communication interface is used to acquire second information, the second information including: sensing requirement information, and / or sensing signal related configuration information corresponding to the sensing requirement information; the communication interface is also used to measure the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, so as to obtain a target measurement quantity; the processor is used to determine the target sensing result according to the target measurement quantity, or the communication interface is used to transmit the target measurement quantity.

[0623] Specifically, Figure 12 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0624] The terminal 1200 includes, but is not limited to, at least some of the following components: radio frequency unit 1201, network module 1202, audio output unit 1203, input unit 1204, sensor 1205, display unit 1206, user input unit 1207, interface unit 1208, memory 1209, and processor 1210.

[0625] Those skilled in the art will understand that the terminal 1200 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1210 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 12 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0626] It should be understood that, in this embodiment, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042. The GPU 12041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0627] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1201 can transmit it to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network-side device. Typically, the radio frequency unit 1201 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0628] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback function, image playback function, etc.). Furthermore, the memory 1209 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1209 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0629] Processor 1210 may include one or more processing units; optionally, processor 1210 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1210.

[0630] The radio frequency unit 1201 is used to acquire second information, which includes: sensing demand information, and / or, sensing signal related configuration information corresponding to the sensing demand information;

[0631] The radio frequency unit 1201 is also used to measure the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, so as to obtain the target measurement quantity.

[0632] The processor 1210 is configured to determine the target perception result based on the target measurement, or the radio frequency unit 1201 is configured to transmit the target measurement.

[0633] Optionally, the step of measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, performed by the radio frequency unit 1201, to obtain the target measurement quantity, includes:

[0634] The radio frequency unit 1201 is used to receive a sequence of target sensing signals from a wireless sensing signal transmitter, at least partially backscattered by the first device.

[0635] The processor 1210 is configured to perform target signal processing based on the target sensing signal sequence and a preset sensing signal sequence to obtain a target measurement quantity, wherein the sensing signal related configuration information includes signal configuration information of the preset sensing signal sequence transmitted by the wireless sensing signal transmitter.

[0636] Optionally, the target measurement includes:

[0637] Demodulated information backscattered from the first device; and / or,

[0638] Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

[0639] Optionally, the sensing signal-related configuration information includes at least one of the following:

[0640] Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

[0641] Optionally, the target measurement includes:

[0642] The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following:

[0643] The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

[0644] Optionally, the radio frequency unit 1201 is also used to receive target operation commands at the receiving end;

[0645] The radio frequency unit 1201 is further configured to read the first information of the first device according to the target operation command, and send the first information to the second device, wherein the target perception result is the perception result determined by the second device based on the target measurement result and the first information.

[0646] Optionally, before the radio frequency unit 1201 performs the measurement of the sensing signal transmitted by the wireless sensing signal transmitter, which is at least partially backscattered by the first device, according to the sensing signal related configuration information, to obtain the target measurement quantity, it is further configured to:

[0647] In response to receiving the sensing requirement information or the first sensing request message, a first sensing response message is sent, wherein the first sensing response message indicates that the wireless sensing signal receiver agrees to participate in the sensing process corresponding to the sensing requirement information or the first sensing request message.

[0648] Optionally, before the radio frequency unit 1201 performs the measurement of the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, in order to obtain the target measurement quantity, it is further configured to: cooperate with the wireless sensing signal transmitter and the first device to perform a reference measurement to obtain a reference measurement quantity.

[0649] The processor 1210 is configured to determine a reference sensing result based on the reference measurement, or the radio frequency unit 1201 is configured to transmit the reference measurement.

[0650] The terminal 1200 provided in this embodiment of the application is capable of performing the following... Figure 9 The second type of wireless sensing device 900 shown performs each process and achieves the same beneficial effect, so it will not be described again here to avoid repetition.

[0651] This application also provides a network-side device, including a processor and a communication interface:

[0652] When the wireless sensing signal receiver is a network-side device, the communication interface is used to acquire second information, which includes: sensing requirement information, and / or sensing signal related configuration information corresponding to the sensing requirement information; the communication interface is also used to measure the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, so as to obtain a target measurement quantity; the processor is used to determine the target sensing result according to the target measurement quantity, or to send the target measurement quantity.

[0653] or,

[0654] The communication interface is used to acquire sensing requirement information and send second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver. The second information includes: the sensing requirement information and / or sensing signal related configuration information corresponding to the sensing requirement information. The communication interface is also used to acquire at least one of a target measurement quantity and a target sensing result. The target measurement quantity is a measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter, which is at least partially backscattered by the first device. The target sensing result is determined based on the target measurement quantity.

[0655] This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiment can be applied to this network-side device embodiment and can achieve the same technical effect.

[0656] Specifically, embodiments of this application also provide a network-side device. For example... Figure 13 As shown, the network-side device 1300 includes: an antenna 1301, a radio frequency (RF) device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to the RF device 1302. In the uplink direction, the RF device 1302 receives information through the antenna 1301 and transmits the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be transmitted and sends it to the RF device 1302. The RF device 1302 processes the received information and transmits it through the antenna 1301.

[0657] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1303, which includes a baseband processor.

[0658] The baseband device 1303 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 13 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1305 via a bus interface to call the program in the memory 1305 and execute the network device operation shown in the above method embodiment.

[0659] The network-side device may also include a network interface 1306, such as a common public radio interface (CPRI).

[0660] Specifically, the network-side device 1300 of this embodiment further includes: instructions or programs stored in memory 1305 and executable on processor 1304, wherein processor 1304 calls the instructions or programs in memory 1305 to execute. Figure 9 (The wireless sensing signal receiver is a network-side device) or Figure 10 The methods executed by each module (the second device is located in the access network) achieve the same technical effect, and will not be described in detail here to avoid repetition.

[0661] This application also provides a network-side device. For example... Figure 14 As shown, the network-side device 1400 includes a processor 1401, a network interface 1402, and a memory 1403. The network interface 1402 is, for example, a common public radio interface (CPRI).

[0662] Specifically, the network-side device 1400 of this embodiment further includes: instructions or programs stored in a memory 1403 and executable on a processor 1401, wherein the processor 1401 calls the instructions or programs in the memory 1403 to execute. Figure 10 The methods executed by each module (the second device is located in the core network) to achieve the same technical effect are not described here to avoid repetition.

[0663] This application embodiment also provides a readable storage medium storing a program or instructions that, when executed by a processor, implement... Figure 2 , Figure 4 or Figure 5 The various processes in the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0664] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0665] This application embodiment also provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement, as described above. Figure 2 , Figure 4 or Figure 5 The various processes in the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0666] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0667] This application embodiment also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the following: Figure 2 , Figure 4 or Figure 5 The various processes in the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0668] This application also provides a wireless sensing system, including: a terminal and a network-side device, wherein the network-side device can be used to perform, for example... Figure 4 (i.e., the wireless sensing signal receiver is a network-side device) and Figure 5 The steps of the wireless sensing method shown are illustrated; or, the terminal can be used to perform, as shown in the example. Figure 4 (i.e., the wireless sensing signal receiver is a terminal) the steps of the wireless sensing method described above, wherein the network-side device can be used to perform such... Figure 5 The steps of the wireless sensing method.

[0669] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0670] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0671] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A wireless sensing method, characterized in that, The method includes: The first device receives first indication information from the wireless sensing signal transmitter, wherein the first indication information is used to specify first information, which is information that the first device needs to feed back to the wireless sensing signal receiver. The first device modulates the first information onto a sensing signal backscattered by the first device, so that the wireless sensing signal receiver can receive the modulated sensing signal; wherein the sensing signal comes from the wireless sensing signal transmitter, and the first information is used to determine the sensing result; The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

2. The method according to claim 1, characterized in that, The first information also includes the identifier of the first device.

3. The method according to any one of claims 1 to 2, characterized in that, The method further includes: The first device receives the second sensing request message; The first device outputs a second sensing response message, wherein the second sensing response message indicates that the first device agrees to participate in the sensing process corresponding to the second sensing request message and / or provide first information.

4. The method according to claim 1, characterized in that, The first device also has an information collection function, and the method further includes: The first device acquires a second measurement quantity corresponding to the perceived target, wherein the first information includes the second measurement quantity.

5. A wireless sensing device, characterized in that, Applied to a first device, the device includes: The first receiving module is configured to receive first indication information from the wireless sensing signal transmitter, wherein the first indication information is used to specify first information, which is information that the first device needs to feed back to the wireless sensing signal receiver. A backscattering module is used to modulate the first information onto the sensing signal backscattered by the first device, so that the wireless sensing signal receiver can receive the modulated sensing signal; wherein the sensing signal comes from the wireless sensing signal transmitter, and the first information is used to determine the sensing result; The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

6. A wireless sensing method, characterized in that, The method includes: The wireless sensing signal receiver acquires second information, which includes: sensing requirement information, and / or sensing signal related configuration information corresponding to the sensing requirement information; The wireless sensing signal receiver measures the sensing signal sent by the wireless sensing signal transmitter, which is at least partially backscattered by the first device, according to the sensing signal related configuration information, so as to obtain the target measurement quantity. The wireless sensing signal receiver determines the target sensing result based on the target measurement, or sends the target measurement. The sensing signal is modulated with first information, which is used to determine the sensing result. The first information is specified by first indication information from the wireless sensing signal transmitter. The first information is the information that the first device needs to feed back to the wireless sensing signal receiver. The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

7. The method according to claim 6, characterized in that, The wireless sensing signal receiver measures the sensing signal transmitted by the wireless sensing signal transmitter, at least partially backscattered by the first device, according to the sensing signal-related configuration information, to obtain the target measurement quantity, including: The wireless sensing signal receiver receives a sequence of target sensing signals from the wireless sensing signal transmitter, at least partially backscattered by the first device. The wireless sensing signal receiver performs target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain the target measurement quantity. The sensing signal related configuration information includes the signal configuration information of the preset sensing signal sequence sent by the wireless sensing signal transmitter.

8. The method according to claim 6 or 7, characterized in that, The target measurement includes: Demodulated information backscattered from the first device; and / or, Wireless sensing measurements that rely on the participation of the first device, or wireless sensing measurements that do not rely on the participation of the first device.

9. The method according to any one of claims 6 to 7, characterized in that, The configuration information related to the sensing signal includes at least one of the following: Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

10. The method according to any one of claims 6 to 7, characterized in that, The target measurement includes: The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following: The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

11. The method according to claim 6 or 7, characterized in that, The method further includes: The wireless sensing signal receiver receives the target operation command; The wireless sensing signal receiver reads the first information of the first device according to the target operation command and sends the first information to the second device, wherein the target sensing result is the sensing result determined by the second device based on the target measurement result and the first information.

12. The method according to any one of claims 6 to 7, characterized in that, Before the wireless sensing signal receiver measures the sensing signal transmitted by the wireless sensing signal transmitter, and at least partially backscattered by the first device, according to the sensing signal-related configuration information, to obtain the target measurement quantity, the method further includes: In response to receiving the sensing requirement information or the first sensing request message, the wireless sensing signal receiver sends a first sensing response message, wherein the first sensing response message indicates that the wireless sensing signal receiver agrees to participate in the sensing process corresponding to the sensing requirement information or the first sensing request message.

13. The method according to any one of claims 6 to 7, characterized in that, Before the wireless sensing signal receiver measures the sensing signal transmitted by the wireless sensing signal transmitter, and at least partially backscattered by the first device, according to the sensing signal-related configuration information, to obtain the target measurement quantity, the method further includes: The wireless sensing signal receiver works with the wireless sensing signal transmitter and the first device to perform reference measurements in order to obtain reference measurement quantities. The wireless sensing signal receiver determines the reference sensing result based on the reference measurement, or sends the reference measurement.

14. A wireless sensing device, characterized in that, The device, used in a wireless sensing signal receiver, includes: The first acquisition module is used to acquire second information, the second information including: perception demand information, and / or, perception signal related configuration information corresponding to the perception demand information; The measurement module is used to measure the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device according to the sensing signal related configuration information, so as to obtain the target measurement quantity. An execution module is used to determine the target perception result based on the target measurement, or to send the target measurement. The sensing signal is modulated with first information, which is used to determine the sensing result. The first information is specified by first indication information from the wireless sensing signal transmitter. The first information is the information that the first device needs to feed back to the wireless sensing signal receiver. The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

15. A wireless sensing method, characterized in that, The method includes: The second device acquires sensing demand information; The second device sends second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver. The second information includes: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information. The second device acquires at least one of a target measurement and a target perception result, wherein the target measurement is a measurement obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least partially backscattered by the first device, and the target perception result is determined based on the target measurement. The sensing signal is modulated with first information, which is used to determine the sensing result. The first information is specified by first indication information from the wireless sensing signal transmitter. The first information is the information that the first device needs to feed back to the wireless sensing signal receiver. The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

16. The method according to claim 15, characterized in that, Before the second device transmits the second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, the method further includes: The second device determines the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device based on the sensing requirement information.

17. The method according to claim 15, characterized in that, The second device acquires at least one of the target measurement and the target perception result, including: The second device acquires the target measurement and determines the target perception result based on the target measurement; or, The second device acquires the target measurement and the first information from the first device, and determines the target perception result based on the target measurement and the first information; or, The second device receives a target perception result from any of the following: The wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side equipment connected to the wireless sensing signal transmitter, the network-side equipment connected to the wireless sensing signal receiver, and the target core network element.

18. The method according to claim 16, characterized in that, The second device determines the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device based on the sensing requirement information, including: The second device acquires third information, wherein the third information includes: fourth information of each terminal in the communication connection, fifth information of each network-side device in the communication connection, and first information of each first device in the communication connection, wherein the fourth information includes at least one of the capability information and location information of the corresponding terminal, and the fifth information includes at least one of the capability information and location information of the corresponding network-side device; The second device determines the sensing type based on the third information and the sensing requirement information; The second device determines the wireless sensing signal transmitter and the wireless sensing signal receiver that match the sensing type based on at least one of the fourth and fifth information. The second device determines the first device based on the first information.

19. The method according to claim 18, characterized in that, The perception type includes any of the following: The terminal receives a sensing signal sent by another terminal or network-side device, and at least part of it is backscattered by the first device; The terminal or network-side device sends a sensing signal and receives at least a portion of the sensing signal backscattered by the first device.

20. The method according to claim 18 or 19, characterized in that, The terminals in the wireless sensing transmitter and the wireless sensing receiver satisfy at least one of the following conditions: The terminal's capability information satisfies the sensing requirements; The location information of the terminal satisfies the sensing requirements; The terminal accesses a network-side device that meets the sensing requirements. And / or, The network-side device in the wireless sensing transmitter meets at least one of the following conditions: The capability information of the network-side device satisfies the sensing requirements; The location information of the network-side device satisfies the sensing requirements; The network-side device is the network-side device that the terminal accesses to meet the sensing requirements; And / or, The first device satisfies at least one of the following conditions: The first device is connected to a terminal or network-side device that meets the sensing requirements; The prior information of the first device satisfies the sensing requirements; The capability information of the first device satisfies the sensing requirements.

21. The method according to claim 18 or 19, characterized in that, The second device obtains the first information in the following way: The second device sends a target operation command in the sensing requirement information to the wireless sensing signal transmitter, and receives the first information from the wireless sensing signal receiver. The target operation command is used to control the first device to carry the first information in the backscattered sensing signal. or, The second device sends sensing signal-related configuration information to the wireless sensing signal transmitter based on the sensing requirement information containing the target operation command, and receives the first information from the wireless sensing signal receiver. or, The second device sends a second indication message to the network-side device or terminal to which the first device is connected, and receives the first information from the network-side device or terminal to which the first device is connected, wherein the second indication message is used to instruct the network-side device or terminal to which the first device is connected to read the first information; or, The second device acquires the first information that has been pre-stored.

22. The method according to claim 18 or 19, characterized in that, The method further includes at least one of the following: The second device invokes the associated base station of the first device to perform a second process on the first device through the associated base station. The second process includes at least one of the following: reading the first information, writing the first information, storing the first information, providing power to the first device, controlling the first device that meets the sensing conditions corresponding to the sensing requirement information to be in an active state, and controlling the first device that does not meet the sensing conditions to be in an inactive state. The first device is located within the read / write range of the associated base station. The second device performs a first process on the pre-stored first information, wherein the first process includes at least one of updating, deleting, and adding.

23. The method according to any one of claims 15 to 19, characterized in that, The method further includes: The second device acquires a reference measurement or a reference measurement result; The reference measurement quantity is the measurement quantity transmitted by the wireless sensing signal receiver and the wireless sensing signal transmitter, and the measurement quantity obtained by the first device through performing a reference sensing process. The target sensing result is determined based on the target measurement quantity and the reference measurement quantity.

24. The method according to claim 23, characterized in that, The second device acquires a reference measurement or reference measurement result, including: The second device obtains a pre-stored reference measurement or reference measurement result from at least one of the following: The wireless sensing signal transmitter, the wireless sensing signal receiver, the first device, the network-side device accessed by the wireless sensing signal transmitter, the network-side device accessed by the wireless sensing signal receiver, the network-side device or terminal accessed by the first device, and the target core network element.

25. The method according to any one of claims 15 to 19, characterized in that, The second device acquires sensing demand information, including: The second device acquires sensing demand information sent or forwarded by the target core network element, wherein the target core network element includes: application server, access and mobility management function (AMF) network element or network management system.

26. The method according to any one of claims 15 to 19, characterized in that, Before the second device sends the second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, the method further includes: The second device acquires target capability information, which includes at least one of the capability information of the wireless sensing signal transmitter, the capability information of the wireless sensing signal receiver, and the capability information of the first device. The second device determines the relevant configuration information of the sensing signal based on the target capability information and the sensing requirement information; or, The second device sends first recommendation information to the wireless sensing signal transmitter based on the sensing requirement information, and receives the sensing signal-related configuration information from the wireless sensing signal transmitter. or, The second device receives second recommendation information from the wireless sensing signal transmitter, and determines the sensing signal-related configuration information based on the second recommendation information and the sensing requirement information; or, The second device receives first configuration information from the wireless sensing signal transmitter and determines second configuration information based on the sensing requirement information, wherein the sensing signal related configuration information includes the first configuration information and the second configuration information.

27. The method according to claim 26, characterized in that, The configuration information related to the sensing signal includes at least one of the following: Waveform, subcarrier spacing, guard interval, bandwidth, burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-located QCL relationship, identification information of the first device, information related to the configuration of the first device for the sensing signal, initial phase of the sensing signal, antenna information of the first device, antenna information of the wireless sensing signal transmitter, timestamp information of each antenna transmitting the sensing signal, time interval between different antennas transmitting signals, amplitude modulation capability of the first device, phase modulation capability of the first device, frequency modulation capability of the first device, encryption algorithm type of the first device, coding code rate corresponding to the channel coding type of the first device, signal modulation method related to the first device, data coding method related to the first device, and frame format related to the first device.

28. The method according to any one of claims 15 to 19, characterized in that, The target measurement includes: The first measurement quantity, which is a measurement quantity related to the first device, includes at least one of the following: The received signal strength index (RSSI) and / or received power of the reflected signal backscattered by the first device, the phase of the reflected signal, the timestamp information of the reflected signal, the backscattering path channel matrix of the first device, the backscattering path channel state information of the first device, the multipath number parameter in the backscattering path multipath channel of the first device, the Doppler frequency and Doppler spread of the reflected signal, the departure angle of the reflected signal, the arrival angle of the reflected signal, the phase difference between the first devices, the time delay difference between the first devices, the phase difference between the antennas of the first devices, the time delay difference between the antennas of the first devices, and the unique identification information of the first device.

29. The method according to claim 15, characterized in that, The second device sends second information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, including: The second device sends second information to the wireless sensing signal transmitter, wherein the wireless sensing signal transmitter is used to forward the second information to the wireless sensing signal receiver; or, The second device sends second information to the wireless sensing signal transmitter and sends measurement requirement information to the wireless sensing signal receiver, wherein the measurement requirement information indicates the measurement quantity related to the sensing signal that the wireless sensing signal receiver needs to measure.

30. The method according to claim 15, characterized in that, The second device acquires at least one of the target measurement and the target perception result, including at least one of the following: The second device receives a target measurement from the wireless sensing signal receiver or the wireless sensing signal transmitter, and sends the target measurement to the core network or application server, wherein the target sensing result is determined by the core network or application server based on the target measurement. The second device receives a target measurement from the wireless sensing signal receiver or the wireless sensing signal transmitter, and determines the target sensing result based on the target measurement. The second device receives target perception results from the wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side device accessed by the wireless sensing signal receiver, or the network-side device accessed by the wireless sensing signal transmitter, wherein the target perception results are determined by the wireless sensing signal transmitter, the wireless sensing signal receiver, the network-side device accessed by the wireless sensing signal receiver, or the network-side device accessed by the wireless sensing signal transmitter based on the target measurement.

31. A wireless sensing device, characterized in that, Applied to a second device, the device includes: The second acquisition module is used to acquire perceived demand information; The second transmitting module is used to transmit second information to at least one of the wireless sensing signal transmitting end and the wireless sensing signal receiving end, the second information including: the sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information; The third acquisition module is used to acquire at least one of a target measurement quantity and a target perception result, wherein the target measurement quantity is the measurement quantity obtained by the wireless sensing signal receiver by measuring the sensing signal transmitted by the wireless sensing signal transmitter and at least part of it being backscattered by the first device, and the target perception result is determined based on the target measurement quantity. The sensing signal is modulated with first information, which is used to determine the sensing result. The first information is specified by first indication information from the wireless sensing signal transmitter. The first information is the information that the first device needs to feed back to the wireless sensing signal receiver. The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

32. A wireless sensing system, characterized in that, include: The first device, a wireless sensing signal transmitter, and a wireless sensing signal receiver; At least one of the wireless sensing signal transmitter and the wireless sensing signal receiver is used to acquire second information, the second information including: sensing requirement information, and / or, sensing signal related configuration information corresponding to the sensing requirement information; The wireless sensing signal transmitter is used to determine the sensing signal-related configuration information based on the sensing requirement information, and to transmit the sensing signal based on the sensing signal-related configuration information; or, the wireless sensing signal transmitter is used to transmit the sensing signal based on the acquired sensing signal-related configuration information. The first device receives first indication information from the wireless sensing signal transmitter, wherein the first indication information is used to specify first information, which is information that the first device needs to feed back to the wireless sensing signal receiver; The first device is used to modulate the first information onto the sensing signal and backscatter the modulated sensing signal; The wireless sensing signal receiver is used to measure the sensing signal sent by the wireless sensing signal transmitter and at least part of it being backscattered by the first device, so as to obtain the target measurement quantity. The first information includes at least one of the following: the state indication information of the first device participating in sensing, the sensing time period of the first device, the sensing service occupancy flag, the incident angle and reflection angle range of the first device, the number of first devices in the associated area, the location information of the first device, the sensing distance of the first device, the operating bandwidth of the first device, the operating frequency of each channel of the first device, the modulation method of the first device, the read / write frequency supported by the first device, the array configuration information of the first device, the signal-to-noise ratio of the reflected signal of the first device, the number of transmitting antennas of a single first device, the number of receiving antennas of a single first device, the antenna arrangement information of a single first device, the arrangement information of an array including at least two first devices, the error statistical distribution parameters of the phase of the reflected signal of the first device, the power supply method of the first device, the power information of the active first device, the energy storage capacity of the first device, the amplitude modulation capability of the first device, the phase modulation capability of the first device, and the frequency modulation capability of the first device.

33. The system according to claim 32, characterized in that, Also includes: Second equipment; The second device is communicatively connected to the wireless sensing signal transmitter, the wireless sensing signal receiver, and the first device, respectively. The second device is used to acquire the sensing requirement information and send the sensing requirement information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver, or to determine the sensing signal related configuration information based on the sensing requirement information and send the sensing signal related configuration information to at least one of the wireless sensing signal transmitter and the wireless sensing signal receiver.

34. The system according to claim 33, characterized in that, The second device includes at least one of the following: Sensing functional entities or sensing network elements in the core network; Sensing functional entities or sensing network elements in the access network.

35. The system according to any one of claims 32 to 34, characterized in that, The sensing signal transmitted by the wireless sensing signal transmitter is a preset sensing signal sequence. The wireless sensing signal receiver is specifically used to receive the target sensing signal sequence from the wireless sensing signal transmitter, which is at least partially backscattered by the first device, and to perform target signal processing based on the target sensing signal sequence and the preset sensing signal sequence to obtain the target measurement quantity. The sensing signal related configuration information includes the signal configuration information of the preset sensing signal sequence.

36. The system according to claim 33 or 34, characterized in that, The wireless sensing signal transmitting end includes a first network-side device or a first terminal, and the wireless sensing signal receiving end includes a second terminal.

37. The system according to claim 36, characterized in that, The first node is used to determine the target perception result based on the target measurement, wherein the first node includes at least one of: the wireless sensing signal transmitter, the wireless sensing signal receiver, the second device, a network-side device accessed by the first terminal, or a network-side device accessed by the second terminal; or... The wireless sensing system further includes a target core network element, wherein the first node is used to send the target measurement quantity to the target core network element, and the target core network element is used to determine the target sensing result based on the target measurement quantity.

38. The system according to claim 37, characterized in that, The second node is used to send reference measurement quantities or reference measurement results to the first node or the first core network element; The first node or the first core network element determines the target perception result based on the reference measurement or reference measurement result and the target measurement. The second node includes at least one of the following: the wireless sensing signal transmitter, the wireless sensing signal receiver, the second device, the network-side device accessed by the first terminal or the network-side device accessed by the second terminal, the first device, and the network-side device or terminal accessed by the first device.

39. The system according to any one of claims 32 to 34, characterized in that, The first device is attached to the sensing target corresponding to the sensing demand information, or the first device is located within the target sensing area corresponding to the sensing demand information.

40. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the wireless sensing method as described in any one of claims 6 to 13.

41. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the wireless sensing method as claimed in any one of claims 6 to 13, or implement the steps of the wireless sensing method as claimed in any one of claims 15 to 30.

42. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the wireless sensing method as described in any one of claims 1 to 4, or the steps of the wireless sensing method as described in any one of claims 6 to 13, or the steps of the wireless sensing method as described in any one of claims 15 to 30.

Images