Communication method and apparatus

Abstract

The present application relates to the technical field of communications. Disclosed are a communication method and an apparatus. The method comprises: a first communication apparatus acquiring position information of a first network device and position information of a first terminal device, wherein the first terminal device is used for receiving a first sensing signal sent by the first network device, or the first network device is used for receiving a second sensing signal sent by the first terminal device; and, on the basis of the position information of the first network device and the position information of the first terminal device, sensing a sensing target of the first sensing signal or the second sensing signal. In this way, the position information of the first network device and the position information of the first terminal device are concentrated in the first communication apparatus, such that the first communication apparatus can sense the sensing target on the basis of the position information of the first network device and the position information of the first terminal device, thereby facilitating smooth bi-static sensing.

Description

Communication method and apparatus

[0001] Cross-reference to related applications

[0002] This application claims priority to the Chinese Patent Application No. 202411261636.1, filed on September 9, 2024, and entitled “A communication method and apparatus”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, and in particular to a communication method and apparatus. BACKGROUND

[0004] Wireless sensing technology obtains the characteristics of the signal propagation space (channel) by analyzing the changes of wireless signals in the propagation process, to realize sensing in the scene. Integrated sensing and communications (ISAC) integrates communication and sensing functions together, so that the future communication system has both communication and sensing functions. When transmitting information through the wireless channel, the physical characteristics of the surrounding environment are perceived by analyzing the characteristics of the channel, thereby realizing the mutual enhancement of communication and sensing functions.

[0005] The main sensing modes at present include mono-static sensing (also known as self-transmission and self-reception) and bi-static sensing (also known as self-transmission and other-reception). Mono-static sensing includes one sensing device, which transmits a sensing signal, receives the sensing signal after the sensing signal is reflected by a sensing target. Bi-static sensing includes two sensing devices, one sensing device transmits a sensing signal, the other sensing device receives the sensing signal after the sensing signal is reflected by a sensing target.

[0006] However, how to realize bi-static sensing still needs further research. SUMMARY

[0007] The present application provides a communication method and apparatus, which centralizes the position information of a network device and the position information of a terminal device in one device / network element, so that bi-static sensing can be smoothly carried out.

[0008] In a first aspect, an embodiment of the present application provides a communication method, which can be applied to a first communication device, such as being executed by the first communication device. In the present application, the "first communication device" can refer to a first communication apparatus (for example, a first network device, a first terminal, a SeMF network element, a SeMF-LMF network element, etc.), a component (for example, a processor, a chip, or a chip system, etc.) in the first communication apparatus, or a logic module or software capable of realizing all or part of the functions of the first communication apparatus. For example, in the method provided in the first aspect, the first communication device obtains position information of a first network device and position information of a first terminal; wherein the first terminal is configured to receive a first sensing signal transmitted by the first network device, or the first network device is configured to receive a second sensing signal transmitted by the first terminal; and the first communication device performs sensing on a sensing target of the first sensing signal or the second sensing signal according to the position information of the first network device and the position information of the first terminal.

[0009] By using the above method, the position information of the first network device and the position information of the first terminal are concentrated in the first communication device, so that the first communication device can perform sensing on the sensing target according to the position information of the first network device and the position information of the first terminal, thereby facilitating the smooth implementation of the double-base sensing.

[0010] In a possible design, the method further includes: obtaining sensing assistance data, the sensing assistance data including time delay information and angle information measured according to the first sensing signal or the second sensing signal; and performing sensing on the sensing target of the first sensing signal or the second sensing signal according to the position information of the first network device and the position information of the first terminal includes: performing sensing on the sensing target according to the position information of the first network device, the position information of the first terminal, the time delay information, and the angle information.

[0011] In a possible design, the obtaining of the position information of the first network device and the position information of the first terminal includes: sending a first position information request to a location management function (LMF) network element; and receiving a response to the first position information request, the response including position information of N terminals, the N terminals including the first terminal, and N being an integer greater than or equal to 1.

[0012] In a possible design, the first position information request includes identifiers of M terminals, and the N terminals are some or all of the M terminals, and M being an integer greater than or equal to 1.

[0013] In a possible design, the method further includes: receiving a sensing service request, where the sensing service request is used to request to start a sensing service, and the sensing service request includes area information used to indicate a sensing area; and the first location information request includes the area information, and the N terminals are located in the sensing area.

[0014] In a possible design, the first location information request includes identifiers of P network devices; and the response to the first location information request further includes location information of Q network devices, where the Q network devices include the first network device; and the Q network devices are part or all of the P network devices, and P and Q are integers greater than or equal to 1.

[0015] In a possible design, the identifiers of the P network devices are located in a first identifier set, and the location information of the Q network devices is located in a first location information set; P is equal to Q; an i th identifier in the first identifier set is an identifier of the first network device, and an i th location information in the first location information set is location information of the first network device, where i is an integer greater than or equal to 1; or the response to the first location information request further includes a second identifier set, an i th identifier in the second identifier set is a first identifier of the first network device, and an i th location information in the first location information set is location information of the first network device; a j th identifier in the first identifier set is a second identifier of the first network device, where j is an integer greater than or equal to 1; i is not equal to j, and / or the first identifier is different from the second identifier.

[0016] In a possible design, the method further includes: sending a second location information request to the first network device; and receiving a response to the second location information request, where the response to the second location information request includes the location information of the first network device.

[0017] In a possible design, the method further includes: sending an authorization request to the first terminal, where the authorization request is used to request to authorize the location information of the first terminal for a sensing service; and receiving a response to the authorization request, where the response is used to confirm the authorization.

[0018] In this way, by sending an authorization request to the terminal to request to authorize the location information of the terminal for a sensing service, the location information of the terminal can be used for the sensing service after the terminal confirms the authorization, thereby facilitating protection of user privacy.

[0019] In a possible design, the method further includes: receiving sensing mode information, where the sensing mode information is used to indicate a double-base sensing mode.

[0020] In a second aspect, an embodiment of the present application provides a communication method, which can be applied to a second communication device, such as being executed by the second communication device. In the present application, the "second communication device" can refer to a second communication device (for example, an LMF network element), a component (for example, a processor, a chip, or a chip system, etc.) in the second communication device, or a logic module or software capable of realizing all or part of the functions of the second communication device, unless otherwise specified. For example, in the method provided in the second aspect, the second communication device receives a first location information request from a sensing management function SeMF network element; and sends a response to the first location information request, wherein the response to the first location information request includes location information of N terminals.

[0021] In a possible design, the method further includes triggering a positioning procedure of a terminal if a number of valid location information of terminals stored in the LMF network element is less than or equal to a threshold.

[0022] In this way, by triggering the positioning procedure of the terminal, the LMF network element can obtain more location information of terminals, and it is convenient to reasonably select the N terminals.

[0023] In a possible design, the first location information request further includes an identifier and area information of the at least one terminal, and the area information is used to indicate a sensing area, and the N terminals are located in the sensing area.

[0024] In a possible design, the method further includes selecting, according to the identifier and the area information of M terminals, the location information of the N terminals from valid location information of terminals stored in the LMF network element, and the N terminals are part or all of the M terminals.

[0025] In a possible design, the method further includes triggering a positioning procedure of M terminals if the M terminals exist in the at least one terminal and have not been positioned; and / or triggering a positioning procedure of N terminals if the N terminals exist in the at least one terminal and have been positioned but the location information of the N terminals is invalid; wherein M and N are integers greater than or equal to 1.

[0026] In a possible design, the first location information request includes identifiers and area information of P network devices, and the area information is used to indicate a sensing area; and the response to the first location information request includes location information of Q network devices, and the Q network devices are located in the sensing area, and the Q network devices are part or all of the P network devices.

[0027] In a possible design, the identifiers of the P network devices are located in a first identifier set, and the location information of the Q network devices is located in a first location information set; P is equal to Q; an i-th identifier in the first identifier set is an identifier of the first network device, and an i-th location information in the first location information set is location information of the first network device, where i is an integer greater than or equal to 1; or, the response to the first location information request further includes a second identifier set, an i-th identifier in the second identifier set is a first identifier of the first network device, and an i-th location information in the first location information set is location information of the first network device; a j-th identifier in the first identifier set is a second identifier of the first network device, where j is an integer greater than or equal to 1; i is not equal to j, and / or the first identifier is different from the second identifier.

[0028] In a possible design, the at least one terminal includes a first terminal, and the method further includes: sending, to the first terminal, an authorization request, where the authorization request is used to request authorization of location information of the first terminal for a perception service; and receiving a response to the authorization request, where the response is used to confirm authorization.

[0029] In a third aspect, a communication apparatus is provided. The communication apparatus can implement the functions of the first aspect or the second aspect. For example, the communication apparatus includes modules or units or means corresponding to the operations of the first aspect or the second aspect. The functions or units or means can be implemented by software or hardware, or by a combination of hardware and software.

[0030] In a possible design, the communication apparatus includes a processing unit and a communication unit. The communication unit can be configured to transceive signals to implement communication between the communication apparatus and another apparatus. The processing unit can be configured to perform some internal operations of the communication apparatus. The processing unit and the communication unit can perform functions corresponding to the operations of the first aspect or the second aspect.

[0031] In a possible design, the communication apparatus includes a processor. The processor can be coupled to a memory. The memory can store computer programs or instructions necessary for implementing the functions of the first aspect or the second aspect. The processor can execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the processor can cause the communication apparatus to implement the method in any possible design or implementation manner of the first aspect or the second aspect.

[0032] In a possible design of the first aspect, the communication apparatus includes a processor and a memory. The memory can store computer programs or instructions necessary for implementing the functions of the first aspect. The processor can execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the communication apparatus can implement the method in any possible design or implementation manner of the first aspect.

[0033] In a possible design of the second aspect, the communication apparatus includes a processor and an interface circuit. The processor can communicate with other apparatuses through the interface circuit, and implement the method in any possible design or implementation manner of the second aspect.

[0034] It can be understood that, in the third aspect, the processor can be implemented by hardware or software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, or the like. When implemented by software, the processor can be a general-purpose processor, which implements the functions by reading software codes stored in a memory. In addition, the processor can be one or more, and the memory can be one or more. The memory can be integrated with the processor, or the memory and the processor can be separately arranged. In a specific implementation process, the memory and the processor can be integrated on the same chip, or can be separately arranged on different chips. The embodiments of the present application do not limit the type of the memory and the arrangement manner of the memory and the processor.

[0035] In a fourth aspect, the present application provides a communication system, which can include a first communication apparatus, a first network device, and a first terminal device. The first communication apparatus is configured to implement the method in the first aspect. Optionally, the communication system further includes a second communication apparatus, which is configured to implement the method in the second aspect.

[0036] In a fifth aspect, the present application provides a computer readable storage medium, which stores computer programs (or computer readable instructions). When the computer programs (or computer readable instructions) are read and executed by a computer, the method in any possible design of the first aspect or the second aspect is implemented.

[0037] By way of example, and not limitation, computer-readable media can include non-transitory computer-readable media, random-access memories (RAMs), read-only memories (ROMs), electrically erasable programmable ROMs (EEPROMs), CD-ROMs or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a computer.

[0038] In a sixth aspect, the present application provides a computer program product, which, when executed by a computer, causes the method in any possible implementation of the first aspect or the second aspect to be performed.

[0039] In a seventh aspect, the present application provides a chip (or a chip system), which comprises a processor coupled with a memory, and the memory stores a computer program; the processor is configured to invoke part or all of the computer program in the memory, so that the method in any possible implementation of the first aspect or the second aspect is performed. BRIEF DESCRIPTION OF DRAWINGS

[0040] FIG. 1A is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applicable;

[0041] FIG. 1B is a schematic diagram of another architecture of a communication system to which embodiments of the present application are applicable;

[0042] FIG. 2 is a schematic diagram of a dual-base perception;

[0043] FIG. 3 is a schematic diagram of a single-base perception;

[0044] FIG. 4 is a schematic diagram of a flow of a communication method provided by an embodiment of the present application;

[0045] FIG. 5 is a schematic diagram of a flow of a communication method provided by an embodiment of the present application for case 1;

[0046] FIG. 6 is a schematic diagram of a flow of another communication method provided by an embodiment of the present application for case 1;

[0047] FIG. 7 is a schematic diagram of a flow of a communication method provided by an embodiment of the present application for case 2;

[0048] FIG. 8 is a schematic diagram of a flow of a communication method provided by an embodiment of the present application for case 3;

[0049] FIG. 9 is a flow diagram of a communication method according to an embodiment of the present application;

[0050] FIG. 10 is an exemplary block diagram of a device according to an embodiment of the present application;

[0051] FIG. 11 is a structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The present application will present various aspects, embodiments or features around a system which can include multiple devices, components, modules, etc. It should be understood and appreciated that each system can include additional devices, components, modules, etc., and / or can not include all the devices, components, modules, etc. discussed in connection with the drawings. In addition, combinations of these solutions can also be used.

[0053] In the embodiments of the present application, the words "exemplarily", "for example", and the like are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the word "example" is used to present the concept in a specific way. In the embodiments of the present application, "of", "corresponding" and "corresponding" are sometimes used interchangeably, and it should be pointed out that when their differences are not emphasized, the meanings they express are consistent. "Network side" or "network device" can include "network equipment" or network side chip or network side component, etc.; "terminal side" or "terminal" can include "terminal equipment" or terminal side chip or terminal side component, etc.

[0054] The technical solutions of the embodiments of the present application can be applied to various wireless communication systems, such as a universal mobile telecommunications system (UMTS), a wireless local area network (WLAN), a short-range wireless communication system (such as a sidelink, wireless fidelity (Wi-Fi), Bluetooth, and the like), a wired network, a vehicle to everything (V2X) communication system, a device-to-device (D2D) communication system, a vehicle networking communication system, a 4th generation (4G) mobile communication system (such as a long term evolution (LTE) system), an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a worldwide interoperability for microwave access (WiMAX) communication system, a 5G mobile communication system (such as a new radio (NR) system), a future communication system, or other similar communication systems, and the like, without limitation. The embodiments of the present application are described by taking the communication system shown in FIGS. 1A and 1B as an example. When the technical solutions of the embodiments of the present application are applied to other communication systems, the devices, components, modules, and the like in the embodiments can be replaced by corresponding devices, components, modules in other communication systems, without limitation.

[0055] FIG. 1A is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applied. As shown in FIG. 1A, the communication system includes an access network 100 and a core network 200. The access network 100 can include at least one network device, such as 110a and 110b in FIG. 1A, and can also include at least one terminal device, such as 120a-120j in FIG. 1A. Among them, 110a is a base station, 110b is a micro station, 120a, 120e, 120f and 120j are mobile phones, 120b is a car, 120c is a fuel dispenser, 120d is a home access point (HAP) arranged indoors or outdoors, 120g is a notebook computer, 120h is a printer, and 120i is a drone. Among them, the same terminal device or network device can provide different functions in different application scenarios. For example, the mobile phones in FIG. 1A are 120a, 120e, 120f and 120j. The mobile phone 120a can access the base station 110a, connect to the car 120b, communicate directly with the mobile phone 120e and access the HAP. The car 120b can access the HAP and communicate directly with the mobile phone 120a. The mobile phone 120f can access the micro station 110b, connect to the notebook computer 120g and connect to the printer 120h. The mobile phone 120j can control the drone 120i.

[0056] (1) Network device

[0057] A network device is a network-side device with wireless transceiving function. The network device can be a device in a radio access network (RAN) that provides wireless communication function for a terminal device, referred to as a RAN device. The RAN can be an access network in the 3rd generation partnership project (3GPP), such as 4G, 5G or future network. The RAN can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a communication network of two or more of the above networks.

[0058] The RAN device can also be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system or an access node in a WiFi system, etc.

[0059] The RAN device can also be a module or unit that completes the functions of the base station part, for example, can be a central unit (CU), can also be a distributed unit (DU), and can also be a radio unit (RU). The CU here completes the functions of the radio resource control protocol (RRC) and the PDCP of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the CU can be further divided into a CU control panel (CP) (CU-CP) and a CU user panel (UP) (CU-UP). The DU completes the functions of the RLC layer and the MA layer of the base station, and can also complete part of the physical layer or all the physical layer functions. For specific descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of 3GPP. The CU and the DU can be separately arranged, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH). In different systems, the CU, the DU or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, and the RU can also be referred to as an O-RU. Any one of the CU (or CU-CP, CU-UP), the DU and the RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The RAN device can be a macro base station (such as 110a in FIG. 1A), can also be a micro base station or an indoor station (such as 110b in FIG. 1A), and can also be a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0060] In the embodiments of the present application, the functions of the network device can also be executed by a module (such as a chip) in the network device, or can also be executed by a control subsystem containing the functions of the network device. The control subsystem containing the functions of the network device here can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation, and smart city.

[0061] (2) Terminal device

[0062] A terminal device is a user-side device with wireless transceiving function. The terminal device can also be referred to as a terminal, a user equipment (UE), a mobile station, a mobile terminal, etc. The terminal device can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, automatic driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiving function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. In the embodiments of the present application, the device for implementing the function of the terminal device can be the terminal device, or a device capable of supporting the terminal device to implement the function, such as a chip system or a combination device or component that can implement the function of the terminal device, which can be installed in the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0063] In the embodiments of the present application, the function of the terminal device can also be executed by a module (such as a chip or a modem) in the terminal device, or by a device containing the function of the terminal device.

[0064] The network device and the terminal device can be fixed in position or movable. The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on an airplane, a balloon and a man-made satellite in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0065] The roles of the network device and the terminal device can be relative. For example, the helicopter or the drone 120i in FIG. 1A can be configured as a mobile network device, and for the terminal device 120j that accesses the wireless access network 100 through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, 110a communicates with 120i through a wireless air interface protocol. Of course, 110a and 120i can also communicate through an interface protocol between network devices and network devices, and in this case, 120i is also a network device relative to 110a. Therefore, the network device and the terminal device can be collectively referred to as a communication apparatus, and 110a and 110b in FIG. 1A can be referred to as a communication apparatus with a network device function, and 120a-120j in FIG. 1A can be referred to as a communication apparatus with a terminal device function.

[0066] Exemplarily, the communication system shown in FIG. 1A can be a communication and sensing integrated system, in which case, the core network of the communication system can include a sensing management function (SeMF) network element and a location management function (LMF) network element; the SeMF network element or the LMF network element can communicate with the network device or the terminal device. Optionally, an access and mobility management function (AMF) network element is further included, in which case, the SeMF network element or the LMF network element can communicate with the network device or the terminal device through the AMF network element, as shown in FIG. 1B. It can be understood that the communication system can further include other possible network elements, which are not limited in detail.

[0067] The SeMF network element is configured to centrally store, manage, distribute, and calculate information of scattering points in a space environment. The LMF network element is configured to locate the terminal device and store location information of the terminal device. The AMF network element is mainly responsible for access management and mobility management of the terminal device, such as state maintenance of the terminal device, reachability management of the terminal device, forwarding of mobility management non-access-stratum (MM NAS) messages, and forwarding of session management (SM) N2 messages. In addition, the network device is responsible for not only communication functions but also sensing functions; and the terminal device is mainly responsible for collecting sensing data of double-base sensing and performing part of scattering body calculation.

[0068] In the embodiments of the present application, the SeMF network element and the LMF network element are taken as core network elements in the core network as an example. In other examples, the SeMF network element and the LMF network element can also be network elements in a non-core network. The network element / function entity in the embodiments of the present application can be a network element in a hardware device, a software function running on a special hardware, or a virtualized function instantiated on a platform (for example, a cloud platform). Optionally, the network element or function entity described above can be implemented by one device, or can be implemented by multiple devices together, or can be different functional modules in one device, and the embodiments of the present application do not make a specific limitation thereon. In actual deployment, the network elements described above can be deployed separately or can be deployed in combination. For example, the SeMF network element and the LMF network element can be deployed separately, or the SeMF network element and the LMF network element can also be deployed in combination, that is, the function of the LMF network element is deployed on the SeMF network element, or the function of the SeMF network element is deployed on the LMF network element, and in the embodiments of the present application, the SeMF-LMF network element is used to represent the SeMF network element and the LMF network element deployed in combination. In addition, the interaction between different network elements / devices can be through a direct interface, or can be through other intermediate network elements for transfer, and the specific implementation is not limited, and the number of devices / network elements in the architecture described above is not limited in the embodiments of the present application.

[0069] The network architecture and service scenarios described in the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be known by those skilled in the art that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0070] The related terms involved in the embodiments of the present application are explained below. When not specifically explained, these explanations are used to support the meaning of the related terms and make the embodiments of the present application easier to understand, and should not be regarded as a strict limitation on the related terms in the protection scope required by the present application.

[0071] (1) Communication and sensing integration

[0072] Communication and sensing integration integrates the functions of communication and sensing together, so that the future communication system has both communication and sensing functions. While transmitting information on the wireless channel, the characteristics of the channel are actively recognized and analyzed, so as to perceive the physical characteristics of the surrounding environment, thereby realizing the mutual enhancement of communication and sensing functions. Communication refers to information transmission between two communication devices or multiple communication devices. Sensing refers to detecting parameters of the physical environment based on communication signals, such as ranging and speed measurement.

[0073] The communication and sensing integration adopts a signal that meets the requirements of both communication and sensing, such as an orthogonal frequency division multiplexing (OFDM) signal. A transmitter transmits an OFDM signal to a sensing target (also referred to as a scatterer below, and the sensing target and the scatterer can be replaced with each other) to be sensed, and the OFDM signal generates a return signal after being reflected by the sensing target, and the return signal has a time delay from the transmitted signal. At a receiver, a range profile is obtained by performing time-domain or frequency-domain digital signal processing on the return signal and the transmitted signal, a time delay estimation value is obtained by searching for a peak value in the range profile, and finally the distance of the sensing target is determined based on the time delay estimation value.

[0074] (2) Sensing mode

[0075] Sensing includes double-base sensing and single-base sensing. The double-base sensing includes two sensing devices (also referred to as sensing nodes, and the sensing devices and the sensing nodes can be replaced with each other), one sensing device transmits a sensing signal, and the other sensing device receives the sensing signal after the sensing signal is reflected by a sensing target. The single-base sensing includes one sensing device, and the sensing device transmits a sensing signal, and receives the sensing signal after the sensing signal is reflected by a sensing target.

[0076] The schematic diagram of the double-base sensing can be understood with reference to FIG. 2. In (a) of FIG. 2, the sensing target in a sensing area is a car, a sensing device that transmits a signal is a base station, and a sensing device that receives a signal is a UE. The base station transmits a signal, and a reflected signal is obtained after the signal is reflected by the car, and the reflected signal is received by the UE. In (b) of FIG. 2, the sensing target in a sensing area is a car, a sensing device that transmits a signal is a UE, and a sensing device that receives a signal is a base station. The UE transmits a signal, and a reflected signal is obtained after the signal is reflected by the car, and the reflected signal is received by the base station. In (c) of FIG. 2, the sensing target in a sensing area is a car, a sensing device that transmits a signal is a base station 1, and a sensing device that receives a signal is a base station 2. The base station 1 transmits a signal, and a reflected signal is obtained after the signal is reflected by the car, and the reflected signal is received by the base station 2. In (d) of FIG. 2, the sensing target in a sensing area is a car, a sensing device that transmits a signal is a UE 1, and a sensing device that receives a signal is a UE 2. The UE 1 transmits a signal, and a reflected signal is obtained after the signal is reflected by the car, and the reflected signal is received by the UE 2. The double-base sensing shown in (a) and (b) of FIG. 2 will be described below as an example.

[0077] The schematic diagram of single-base perception can be understood with reference to FIG. 3. FIG. 3(a) shows that the perception target in the perception area is a car, and the perception device is a base station. After the base station transmits a signal, the signal is reflected by the car to obtain a reflected signal, and the reflected signal is received by the base station again. FIG. 3(b) shows that the perception target in the perception area is a car, and the perception device is a UE. After the UE transmits a signal, the signal is reflected by the car to obtain a reflected signal, and the reflected signal is received by the UE again.

[0078] (3) Perception target

[0079] The perception target can be a scatterer, also referred to as a reflector, a diffractor, a reflection point, or a diffraction point, etc. The scatterer is a passive device and cannot transmit and receive signals, but can reflect, diffract, or scatter signals, etc. The scatterer can be a vehicle, a tree, an animal, etc. Here, only exemplary descriptions are given without specific limitation. Any target that, after receiving a perception signal from a perception device, directly reflects (or scatters or diffracts) the signal and then transmits the signal to the current perception device or another perception device belongs to the scatterer mentioned in this application.

[0080] It should be noted that the scatterer can be flexibly set. For example, the car in FIG. 2 or FIG. 3 can be regarded as a whole scatterer, or parts of the car can be regarded as different scatterers, and the four wheels of the car can be regarded as different scatterers. For example, when the perception is used for positioning, the car can be regarded as a whole scatterer, and when the perception is used for reconstruction, different parts of the car can be regarded as different scatterers to reconstruct the outline of the car.

[0081] For the double-base perception shown in FIG. 2(a) or (b), in order to determine the position information of the scatterer (or the perception target), the information to be obtained includes the position information of the base station, the position information of the UE, the angle information, and the time delay information. The angle information includes the angle of arrival (AoA) or the angle of departure (AoD).

[0082] For example, for the double-base perception shown in FIG. 2(a), i.e., downlink double-base perception, the following formula (referred to as formula 1) can be constructed: |PA|+|PB|=c*T ∠PAY=AoD

[0083] For the double-base perception shown in FIG. 2(b), i.e., uplink double-base perception, the following formula (referred to as formula 2) can be constructed: |PA|+|PB|=c*T ∠PAY=AoA

[0084] Wherein, c represents the speed of light, and T represents the time delay. For downlink double-baseline perception, the angle information and the time delay information can be measured through a downlink reference signal (i.e., a perception signal sent by a base station); for uplink double-baseline perception, the angle information and the time delay information can be measured through an uplink reference signal (i.e., a perception signal sent by a UE).

[0085] However, in the 5G traditional positioning service framework, in order to protect user privacy, the location information of the UE is specially managed by the LMF network element, and will not be informed to the base station; and in order to protect business security, the location information of the base station of the operator cannot reach the UE, that is, the base station and the UE cannot generally obtain the location information of the other party, thereby bringing challenges to double-baseline perception.

[0086] Based on this, the embodiments of the present application provide a communication method and device, which centralize the location information of the network equipment and the location information of the terminal equipment in one device / network element, so that the double-baseline perception can be smoothly carried out.

[0087] The method provided by the embodiments of the present application relates to at least one communication device, such as at least one communication device including a first communication device. In the case of not being specially stated, the "first communication device" in the present application can refer to a first communication equipment (such as a network equipment, a terminal equipment, a SeMF network element or a SeMF-LMF network element), or can also refer to a component (such as a processor, a chip or a chip system, etc.) in the first communication equipment, or can also be a logic module or software capable of realizing all or part of the functions of the first communication equipment.

[0088] FIG. 4 is a flowchart of a communication method provided by the embodiments of the present application. As shown in FIG. 4, the method can include:

[0089] S401, the first communication device acquires the location information of the first network equipment and the location information of the first terminal equipment.

[0090] Here, the first terminal equipment is used to receive a first perception signal sent by the first network equipment, that is, downlink double-baseline perception; or the first network equipment is used to receive a second perception signal sent by the first terminal equipment, that is, uplink double-baseline perception.

[0091] Exemplarily, the first communication device can receive a perception service request from a requestor of a perception service, the perception service request being used to start the perception service, and then the first communication device can acquire the location information of the first network equipment and the location information of the first terminal equipment according to the perception service request. Or, the first communication device is the requestor of the perception service, and the first communication device acquires the location information of the first network equipment and the location information of the first terminal equipment in the case of determining to start the perception service.

[0092] The perception service request includes area information and / or perception mode information.

[0093] The area information is used to indicate a perception area requested by the perception service request. The first network device is a network device in the perception area, and the first terminal device is a terminal device in the perception area. For example, the area information can include geographic location information (such as longitude and latitude, altitude, or part or all of the information), or can include information used by an operator network to identify an area, such as part or all of cell information or tracking area information.

[0094] The perception mode information is used to indicate a single-base perception mode or a double-base perception mode. In the case where the perception mode information indicates a double-base perception mode, the first communication device can obtain location information of the first network device and location information of the first terminal device according to the perception service request. In this case, the perception mode information can further indicate an uplink double-base perception mode or a downlink double-base perception mode. In the case where the perception mode information indicates a single-base perception mode, the specific implementation of the first communication device can refer to the prior art.

[0095] It can be understood that the above is an example in which the area information or the perception mode information is carried in the perception service request. In other examples, the area information or the perception mode information is carried in other possible messages, and the specific implementation is not limited.

[0096] S402, the first communication device perceives a perception target of the first perception signal or the second perception signal according to the location information of the first network device and the location information of the first terminal device.

[0097] For example, the first communication device obtains perception assistance data, and the perception assistance data includes time delay information and angle information measured according to the first perception signal or the second perception signal. Then, the first communication device perceives the perception target according to the location information of the first network device, the location information of the first terminal device, the time delay information, and the angle information, such as calculating the location information of the perception target by using the formula 1 or the formula 2.

[0098] Optionally, the first communication device can send the perception result (such as the location information of the perception target) to the requester of the perception service.

[0099] By using the above method, the location information of the first network device and the location information of the first terminal device are concentrated in the first communication device, so that the first communication device can perceive the perception target according to the location information of the first network device and the location information of the first terminal device, thereby facilitating the smooth implementation of the double-base perception.

[0100] The first communication device in FIG. 4 can be a network device, a terminal device, a SeMF network element, or a SeMF-LMF network element. Based on the introduction of FIG. 4, some more specific implementation processes are described below in combination with scenarios 1 to 4.

[0101] (1) Scenario 1: The first communication device is located in a core network, such as a SeMF network element.

[0102] FIG. 5 is a flowchart of a communication method provided by an embodiment of the present application for scenario 1. As shown in FIG. 5, taking the first communication device as a SeMF network element for example, the method can include the following steps.

[0103] S501, a requestor of a perception service sends a perception service request to the SeMF network element, and the perception service request is used to request to start the perception service; correspondingly, the SeMF network element receives the perception service request.

[0104] Exemplarily, the requestor of the perception service can be a terminal device a, a network device a, an AMF network element, or a gateway mobile location center (GMLC). When the requestor of the perception service is the terminal device a or the network device a, the terminal device a or the network device a can send the perception service request to the SeMF network element through the AMF network element. The terminal device a can be a first terminal device, or can also be other possible terminal devices; the network device a can be a first network device, or can also be other possible network devices.

[0105] The perception service request is used to request to start the perception service, and the perception service request can include area information and / or perception mode information. The area information and the perception mode information can refer to the description above. In the embodiment of the present application, the perception service request includes the area information and the perception mode information, and the perception mode information is used to indicate a dual-base perception mode, which is described by way of example.

[0106] S502, the SeMF network element sends a location information request 1 to an LMF network element according to the perception service request; correspondingly, the LMF network element receives the location information request 1.

[0107] The location information request 1 includes the identification (such as a first identification) of P network devices, and the first identification of the network device can be an identification used to identify the network device in an operator network. The second identification of the network device below can be a temporary identification newly given to the network device by the LMF network element. Optionally, the location information request 1 also includes the identification (such as a first identification) of M terminal devices, and the first identification of the terminal device can be an identification used to identify the terminal device in the operator network. The second identification of the terminal device below can be a temporary identification newly given to the terminal device by the LMF network element.

[0108] Specifically, the SeMF network element can store the first identifiers of P network devices capable of providing the sensing service; after receiving the sensing service request, the SeMF network element can obtain the first identifiers of the P network devices. For example, the location information request 1 includes a first identifier set, and the first identifier set includes the first identifiers of the P network devices, such as the first identifier set is {gNB ID1, gNB ID2, gNB ID3, gNB ID4}, that is, P = 4.

[0109] The SeMF network element can also store the first identifiers of M terminal devices capable of providing the sensing service; after receiving the sensing service request, the SeMF network element can obtain the first identifiers of the M terminal devices. For example, the location information request 1 also includes a third identifier set, and the third identifier set includes the first identifiers of the M terminal devices, such as the third identifier set is {UE ID1, UE ID2, UE ID3, UE ID4}, that is, M = 4.

[0110] Among them, the P network devices include a first network device, such as the first identifier of the first network device is gNB ID1; the M terminal devices include a first terminal device, such as the first identifier of the first terminal device is UE ID1.

[0111] It can be understood that the "location information request" in the embodiments of the present application can be replaced by "position information for sensing request"; accordingly, the "response to the location information request" can be replaced by "position information for sensing response".

[0112] S503, the LMF network element sends a location information request 2 to the first network device according to the location information request 1, and the location information request 2 is used to request the location information of the first network device; correspondingly, the first network device receives the location information request 2.

[0113] S504, the first network device sends a response to the location information request 2 to the LMF network element; correspondingly, the LMF network element receives the response to the location information request 2.

[0114] Exemplarily, the LMF network element acquires the location information of the P network devices according to the first identifiers of the P network devices carried in the location information request 1. For example, taking a first network device in the P network devices as an example, the LMF network element can send a location information request 2 to the first network device according to the first identifier of the first network device, and then the first network device can send a response of the location information request 2 to the LMF network element, and the response includes the location information of the first network device.

[0115] Further, after the LMF network element acquires the location information of the P network devices, the LMF network element can determine which network devices in the P network devices are located in the awareness area according to the area information carried in the location information request 1. For example, Q network devices in the P network devices are located in the awareness area, and then the response of the location information request 1 in the following includes the location information of the Q network devices. The Q network devices are part or all of the P network devices.

[0116] Optionally, the LMF network element can also send an authorization request to the first network device, and the authorization request is used to request authorization of the location information of the first network device for the awareness service. Correspondingly, the first network device sends an authorization response to the LMF network element, and the authorization response is used to confirm the authorization. For example, the first network device belongs to a first network (such as a network deployed by operator a), and the SeMF network element belongs to a second network (such as a network deployed by operator b), and the authorization request is used to request authorization of the location information of the first network device for the awareness service of the second network. It can be understood that the first network device can also refuse the authorization, and the embodiment of the application is described by taking the first network device confirming the authorization as an example. The authorization request can be carried in the same message as the above-mentioned location information request 2, or carried in different messages; or the above-mentioned location information request 2 is also used to request authorization of the location information of the first network device for the awareness service, and the specific implementation is not limited. If the first network device and the SeMF belong to the same network deployed by the operator, the above-mentioned authorization process can not be performed.

[0117] S505, the LMF network element selects N terminal devices according to the location information request 1.

[0118] As a possible implementation, in a case that the location information request 1 comprises the first identifiers of M terminal devices, the LMF network element triggers a positioning procedure for M1 terminal devices (M1 is less than or equal to M) among the M terminal devices if it is determined that there are M1 terminal devices among the M terminal devices that have not been positioned, to obtain the location information of the M1 terminal devices (the specific implementation of the positioning procedure can refer to the prior art); and / or, the LMF network element triggers a positioning procedure for M2 terminal devices (M2 is less than or equal to M) among the at least one terminal device if it is determined that there are M2 terminal devices among the at least one terminal device that have been positioned but the location information of which is invalid, to obtain the location information of the M2 terminal devices. For a terminal device that has been positioned and the location information of which is valid, the LMF network element can directly obtain the stored location information of the terminal device.

[0119] Since the terminal device has mobility, the location information of the terminal device is time-sensitive. If the interval between the acquisition time of the location information of the terminal device and the current time is greater than a preset time threshold, the location information of the terminal device is invalid; if the interval between the acquisition time of the location information of the terminal device and the current time is less than or equal to the preset time threshold, the location information of the terminal device is valid. It can be understood that in other examples, the location information of the terminal device can also be invalid due to other possible reasons, which are not limited by the embodiments of the present application.

[0120] Illustratively, after the LMF network element obtains the location information of the M terminal devices, it can determine which terminal devices among the M terminal devices are located in the awareness area according to the area information carried in the location information request 1, for example, N terminal devices among the M terminal devices are located in the awareness area, and then the LMF network element can select the N terminal devices. The N terminal devices are part or all of the M terminal devices.

[0121] As another possible implementation, in a case that the location information request 1 does not comprise the first identifiers of the M terminal devices, the LMF network element triggers a positioning procedure for the terminal devices if it is determined that the number of valid location information of terminal devices stored in the LMF network element is less than or equal to a number threshold. For example, the LMF network element stores location information of 5 terminal devices, of which 3 terminal devices have valid location information and the other two terminal devices have invalid location information, and the number threshold is equal to 5, so the number of valid location information of terminal devices stored in the LMF network element is less than the number threshold. Alternatively, the LMF network element triggers a positioning procedure for the terminal devices if it is determined that the LMF network element has not executed a positioning procedure recently (for example, the LMF network element has not executed a positioning procedure within a certain time period), so that the LMF network element does not have sufficient knowledge about the location information of the terminal devices existing around.

[0122] Exemplarily, after the LMF network element executes the positioning procedure, the position information of a plurality of terminal devices can be acquired, and then the LMF network element can determine which terminal devices in the plurality of terminal devices are located in the perception area according to the area information carried in the position information request 1, and further filter N terminal devices located in the perception area from the plurality of terminal devices.

[0123] S506, the LMF network element sends an authorization request to a first terminal device in the N terminal devices, and the authorization request is used to request authorization of the position information of the first terminal device for the perception service; correspondingly, the first terminal device receives the authorization request.

[0124] The authorization request in the embodiment of the application can be a position information private authorization request (position information private authorization request), and correspondingly, the authorization response can be a position information private authorization response (position information private authorization response).

[0125] S507, the first terminal device sends an authorization response to the LMF network element according to the authorization request, and the authorization response is used to confirm authorization; correspondingly, the LMF network element receives the authorization response.

[0126] Exemplarily, the authorization response includes an Enable_Authorization field, which can include 1 bit. If the value of the field is 0, it means refusing authorization or prohibiting authorization, and if the value of the field is 1, it means confirming authorization; or conversely, if the value of the field is 1, it means refusing authorization or prohibiting authorization, and if the value of the field is 0, it means confirming authorization.

[0127] It can be understood that the first terminal device can also refuse authorization, and the embodiment of the application is described by taking the first terminal device confirming authorization as an example.

[0128] S508, the LMF network element sends a response of the position information request 1 to the SeMF network element; correspondingly, the SeMF network element receives the response of the position information request 1.

[0129] Exemplarily, the response of the position information request 1 includes the position information of Q network devices and the position information of N terminal devices (N terminal devices all confirm authorization).

[0130] (1) The position information of the network device:

[0131] Taking Q=P as an example, in an example, the location information of the P network devices can be located in the first location information set, such as the first location information set is {location information a1, location information a2, location information a3, location information a4}, the location information a1 is the location information of the network device 1 (the first identifier of the network device 1 is gNB ID1), the location information a2 is the location information of the network device 2 (the first identifier of the network device 2 is gNB ID2), the location information a3 is the location information of the network device 3 (the first identifier of the network device 3 is gNB ID3), and the location information a4 is the location information of the network device 4 (the first identifier of the network device 4 is gNB ID4), that is, the i-th identifier in the first identifier set is the first identifier of the network device i, and the i-th location information in the first location information set is the location information of the network device i. In this case, after the SeMF network element receives the response of the location information request 1, according to the first identifier set and the first location information set in the response, the location information of each network device in the P network devices can be determined. In this way, the response of the location information request 1 carries the first location information set, without carrying the first identifier of the network device, thereby facilitating to ensure the security of transmitting the location information of the network device.

[0132] In another example, the location information of the Q network devices can be located in the first location information set, such as the first location information set is {location information a1, location information a2, location information a3, location information a4}; the response of the location information request 1 further includes a second identifier set, and the second identifier set includes the identifiers (such as the second identifier) of the Q network devices, such as the second identifier set is {gNB ID1', gNB ID2', gNB ID3', gNB ID4'}. The gNB ID1' is a temporary identifier corresponding to the gNB ID1, the gNB ID2' is a temporary identifier corresponding to the gNB ID2, the gNB ID3' is a temporary identifier corresponding to the gNB ID3, and the gNB ID4' is a temporary identifier corresponding to the gNB ID4. That is, the i-th identifier in the first identifier set is the first identifier of the network device i, the i-th identifier in the second identifier set is the second identifier of the network device i, and the i-th location information in the first location information set is the location information of the network device i. In this case, after the SeMF network element receives the response of the location information request 1, according to the first location information set and the second identifier set in the response, the location information of each network device in the P network devices can be determined. In this way, the response of the location information request 1 carries the first location information set and the second identifier set, thereby facilitating to ensure the security of transmitting the location information of the network device.

[0133] In some examples, the jth identity in the first identity set is the first identity of the network device j, the ith identity in the second identity set is the second identity of the network device i, and the ith location information in the first location information set is the location information of the network device i, i≠j, i.e., the order in the first identity set can be different from the order in the second identity set. For example, the first identity set is {gNB ID1, gNB ID2, gNB ID3, gNB ID4}, the second identity set is {gNB ID4', gNB ID3', gNB ID2', gNB ID1'}, and the first location information set is {location information a4, location information a3, location information a2, location information a1}.

[0134] In some other examples, the second identity set includes the first identities of Q network devices, for example, the first identity set is {gNB ID1, gNB ID2, gNB ID3, gNB ID4}, the second identity set is {gNB ID4, gNB ID3, gNB ID2, gNB ID1}, and the first location information set is {location information a4, location information a3, location information a2, location information a1}.

[0135] (2) Location information of the terminal device:

[0136] As a possible implementation, assuming that the location information request 1 includes the first identities of M terminal devices, N=M, in an example, the location information of the M network devices can be located in the second location information set, for example, the second location information set is {location information b1, location information b2, location information b3, location information b4}, location information b1 is the location information of terminal device 1 (the first identity of terminal device 1 is UE ID1), location information b2 is the location information of terminal device 2 (the first identity of terminal device 2 is UE ID2), location information a3 is the location information of terminal device 3 (the first identity of terminal device 3 is UE ID3), and location information a4 is the location information of terminal device 4 (the first identity of terminal device 4 is UE ID4), i.e., the ith identity in the third identity set is the first identity of the terminal device i, and the ith location information in the second location information set is the location information of the terminal device i. In this case, after the SeMF network element receives the response to the location information request 1, according to the third identity set and the second location information set in the response, the location information of each of the M terminal devices can be determined. In this way, the response to the location information request 1 carries the second location information set, without carrying the first identity of the terminal device, thereby facilitating the security of transmitting the location information of the terminal device.

[0137] In yet another example, the location information of the M terminal devices can be located in the second location information set, such as the second location information set being {location information b1, location information b2, location information b3, location information b4}; the response of the location information request 1 further includes a fourth identifier set, and the fourth identifier set includes the identifiers (such as the second identifiers) of the M terminal devices, such as the fourth identifier set being {UE ID1', UE ID2', UE ID3', UE ID4'}. The UE ID1' is a temporary identifier corresponding to the UE ID1, the UE ID2' is a temporary identifier corresponding to the UE ID2, the UE ID3' is a temporary identifier corresponding to the UE ID3, and the UE ID4' is a temporary identifier corresponding to the UE ID4. That is, the i-th identifier in the third identifier set is the first identifier of the i-th terminal device, the i-th identifier in the fourth identifier set is the second identifier of the i-th terminal device, and the i-th location information in the second location information set is the location information of the i-th terminal device. In this case, after receiving the response of the location information request 1, the SeMF network element can determine the location information of each of the M terminal devices according to the second location information set and the fourth identifier set in the response. In this way, the response of the location information request 1 carries the second location information set and the fourth identifier set, thereby facilitating the security of transmitting the location information of the terminal devices.

[0138] The related implementation of the third identifier set, the fourth identifier set and the second location information set can refer to the description of the first identifier set, the second identifier set and the first location information set, and will not be repeated here.

[0139] As another possible implementation, in the case that the location information request 1 does not include the first identifiers of the M terminal devices, the response of the location information request 1 includes the second location information set and the fourth identifier set, and the description of the second location information set and the fourth identifier set can refer to the foregoing.

[0140] S509, the SeMF network element acquires the perception auxiliary data, and performs perception on the perception target according to the perception auxiliary data, the location information of the first network device and the location information of the first terminal device, such as determining the location information of the perception target.

[0141] Exemplarily, for downlink double-baseline perception, the first terminal device receives the first perception signal sent by the first network device, and can measure the angle information 1 and the time delay information 1 according to the first perception signal, and then sends the perception auxiliary data 1 including the angle information 1 and the time delay information 1 to the SeMF network element. For uplink double-baseline perception, the first network device receives the second perception signal sent by the first terminal device, and can measure the angle information 2 and the time delay information 2 according to the second perception signal, and then sends the perception auxiliary data 2 including the angle information 2 and the time delay information 2 to the SeMF network element.

[0142] S510, the SeMF network element sends a response to the requestor of the perception service to the perception service request; correspondingly, the requestor of the perception service receives the response to the perception service request.

[0143] The response to the perception service request includes a perception result, such as location information of the perception target.

[0144] Exemplarily, when the requestor of the perception service is the terminal device a or the network device a, the SeMF network element can send the response to the perception service request to the requestor of the perception service through the AMF network element.

[0145] By using the flowchart shown in FIG. 5, the location information of the first network device and the location information of the first terminal device can be concentrated on the SeMF network element, thereby facilitating the implementation of the double-base perception. Further, since the LMF network element sends the location information of the terminal device to the SeMF network element under the authorization of the terminal device, the user privacy is protected.

[0146] For the flowchart shown in FIG. 5, in some possible examples, the SeMF network element can store the identity and the location information of the network device capable of providing the perception service, in which case the SeMF network element does not need to request the location information of the network device. For example, the above-mentioned location information request 1 does not need to carry the identity of the network device, S503 and S504 do not need to be executed, and the response to the location information request 1 does not need to carry the location information of the network device.

[0147] FIG. 6 is a flowchart of another communication method provided by an embodiment of the present application for case 1. As shown in FIG. 6, the method can include:

[0148] S601, the requestor of the perception service sends a perception service request to the SeMF network element, and the perception service request is used to request to start the perception service; correspondingly, the SeMF network element receives the perception service request.

[0149] S602, the SeMF network element sends a location information request 3 to the first network device according to the perception service request, and the location information request 3 is used to request the location information of the first network device; correspondingly, the first network device receives the location information request 3.

[0150] S603, the first network device sends a response to the location information request 3 to the SeMF network element; correspondingly, the SeMF network element receives the response to the location information request 3.

[0151] Exemplarily, the SeMF network element can store the identities (such as the first identities) of a plurality of network devices capable of providing the perception service; after receiving the perception service request, the SeMF network element can obtain the identities of the plurality of network devices, and obtain the location information of the plurality of network devices according to the identities of the plurality of network devices. Taking a first network device in the plurality of network devices as an example, the SeMF network element can send a location information request 3 to the first network device according to the first identity of the first network device, and then the first network device can send a response to the location information request 3 to the SeMF network element, the response including the location information of the first network device.

[0152] Optionally, the SeMF network element can also send an authorization request to the first network device, the authorization request being used to request authorization of the location information of the first network device for the perception service, and correspondingly, the first network device sends an authorization response to the SeMF network element, the authorization response being used to confirm the authorization. For example, the first network device belongs to a first network (such as a network deployed by operator a), and the SeMF network element belongs to a second network (such as a network deployed by operator b), and then the SeMF network element can send an authorization request to the first network device through other network elements, the authorization request being used to request authorization of the location information of the first network device for the perception service of the second network. It can be understood that the first network device can also refuse the authorization, and the embodiments of the present application are described by taking the first network device confirming the authorization as an example. The authorization request can be carried in the same message as the above-mentioned location information request 3, or carried in different messages; or the above-mentioned location information request 3 is also used to request authorization of the location information of the first network device for the perception service, and the specific implementation is not limited.

[0153] S604, the SeMF network element sends a location information request 4 to the LMF network element according to the perception service request; correspondingly, the LMF network element receives the location information request 4.

[0154] The location information request 4 can include the identities (such as the first identities) of the M terminal devices, or can not include the identities of the M terminal devices.

[0155] Exemplarily, the SeMF network element can store the first identities of the M terminal devices capable of providing the perception service; after receiving the perception service request, the SeMF network element can obtain the first identities of the M terminal devices. For example, the location information request 4 includes a third identity set, and the third identity set includes the first identities of the M terminal devices.

[0156] S605, the LMF network element selects N terminal devices according to the location information request 4.

[0157] S606, the LMF network element sends a grant request to a first terminal device in the N terminal devices, the grant request being used to request authorization of location information of the first terminal device for a perception service; correspondingly, the first terminal device receives the grant request.

[0158] S607, the first terminal device sends a grant response to the LMF network element according to the grant request, the grant response being used to confirm authorization; correspondingly, the LMF network element receives the grant response.

[0159] S608, the LMF network element sends a response of the location information request 4 to the SeMF network element; correspondingly, the SeMF network element receives the response of the location information request 4.

[0160] Exemplarily, the response of the location information request 4 includes location information of the N terminal devices. Wherein, the N terminal devices are part or all of the M terminal devices. For example, the response of the location information request 4 includes the fourth identifier set and the second location information set, which can be referred to the related description in FIG. 5.

[0161] S609, the SeMF network element acquires perception assistance data, and performs perception on a perception target according to the perception assistance data, the location information of the first network device, and the location information of the first terminal device.

[0162] S610, the SeMF network element sends a response of the perception service request to a requester of the perception service; correspondingly, the requester of the perception service receives the response of the perception service request.

[0163] It can be understood that the difference between the flowchart shown in FIG. 6 and the flowchart shown in FIG. 5 is that, in FIG. 5, the LMF network element acquires the location information of the multiple network devices by sending a location information request to the multiple network devices, and sends the location information to the SeMF network element; while in FIG. 6, the SeMF network element acquires the location information of the multiple network devices by sending a location information request to the multiple network devices. Except for this difference, the two can be referred to each other.

[0164] For the flowchart shown in FIG. 6, in some possible examples, the SeMF network element can store the identifiers and location information of the network devices capable of providing the perception service, in this case, the SeMF network element does not need to request the location information of the network devices. For example, S602 and S603 do not need to be performed.

[0165] (2) Case 2: The first communication device is located in the core network, for example, the first communication device is located in the SeMF-LMF network element.

[0166] FIG. 7 is a flowchart of a communication method provided by the embodiments of the present application for case 2. As shown in FIG. 7, taking the first communication device as the SeMF-LMF network element for example, the method can include:

[0167] S701, a request direction of a perception service sends a perception service request to a SeMF-LMF network element, and the perception service request is used to request to start the perception service; correspondingly, the SeMF-LMF network element receives the perception service request.

[0168] S702, the SeMF-LMF network element sends a location information request 5 to a first network device according to the perception service request, and the location information request 5 is used to request the location information of the first network device; correspondingly, the first network device receives the location information request 5.

[0169] S703, the first network device sends a response of the location information request 5 to the SeMF-LMF network element; correspondingly, the SeMF-LMF network element receives the response of the location information request 5.

[0170] Exemplarily, the SeMF-LMF network element can store the identities of a plurality of network devices capable of providing the perception service; after receiving the perception service request, the SeMF-LMF network element can obtain the identities of the plurality of network devices, and obtain the location information of the plurality of network devices according to the identities of the plurality of network devices. Taking a first network device in the plurality of network devices as an example, the SeMF-LMF network element can send a location information request 5 to the first network device according to a first identity of the first network device, and then the first network device can send a response of the location information request 5 to the SeMF-LMF network element, and the response includes the location information of the first network device.

[0171] S704, the SeMF-LMF network element selects N terminal devices according to the perception service request.

[0172] S705, the SeMF-LMF network element sends an authorization request to a first terminal device in the N terminal devices, and the authorization request is used to request to authorize the location information of the first terminal device for the perception service; correspondingly, the first terminal device receives the authorization request.

[0173] S706, the first terminal device sends an authorization response to the SeMF-LMF network element according to the authorization request, and the authorization response is used to confirm the authorization; correspondingly, the SeMF-LMF network element receives the authorization response.

[0174] S707, the SeMF-LMF network element obtains perception assistance data, and performs perception on a perception target according to the perception assistance data, the location information of the first network device, and the location information of the first terminal device.

[0175] S708, the SeMF-LMF network element sends a response of the perception service request to a requestor of the perception service; correspondingly, the requestor of the perception service receives the response of the perception service request.

[0176] It can be understood that the difference between the flowchart shown in FIG. 7 and the flowchart shown in FIG. 5 or FIG. 6 is that, in FIG. 5 or FIG. 6, the SeMF network element and the LMF network element are two separate network elements, while in FIG. 7, the SeMF network element and the LMF network element are combined into one network element. Except for this difference, FIG. 7 can refer to the description in FIG. 5 or FIG. 6.

[0177] (3) Case 3: The first communication device is located at the network side, for example, the first communication device is located at the first network device.

[0178] FIG. 8 is a flowchart of a communication method provided by an embodiment of the present application for case 3. As shown in FIG. 8, taking the first communication device as the first network device for example, the method can include the following steps.

[0179] S801, the requestor of the perception service sends a perception service request to the first network device; correspondingly, the first network device receives the perception service request.

[0180] As described above, the requestor of the perception service can be the terminal device a, the network device a, the AMF network element or the GMLC. If the requestor of the perception service is the network device a and the network device a is the first network device, S801 and S808 can not be performed.

[0181] S802, the first network device sends a location information request 6 to the SeMF-LMF network element; correspondingly, the SeMF-LMF network element receives the location information request 6.

[0182] The location information request 6 is used to request the location information of the terminal device. For example, the location information request 6 includes area information, and optionally, the location information request 6 further includes the identities of the M terminal devices.

[0183] S803, the SeMF-LMF network element selects N terminal devices according to the location information request 6.

[0184] For example, the specific implementation of S803 can refer to the description of S505.

[0185] S804, the SeMF-LMF network element sends an authorization request to a first terminal device in the N terminal devices, the authorization request being used to request authorization of the location information of the first terminal device for the perception service, and to request authorization of informing the network device of the location information of the first terminal device; correspondingly, the first terminal device receives the authorization request.

[0186] S805, the first terminal device sends an authorization response to the SeMF-LMF network element according to the authorization request, the authorization response being used to confirm the authorization; correspondingly, the SeMF-LMF network element receives the authorization response.

[0187] S806, the SeMF-LMF network element sends a response of the location information request 6 to the first network device; correspondingly, the first network device receives the response of the location information request 6.

[0188] The response of the location information request 6 includes the location information of the N terminal devices.

[0189] S807, the first network device acquires the perception auxiliary data, and performs perception on the perception target according to the perception auxiliary data, the location information of the first network device, and the location information of the first terminal device, such as determining the location information of the perception target.

[0190] S808, the first network device sends a response of the perception service request to the requester of the perception service; correspondingly, the requester of the perception service receives the response of the perception service request.

[0191] By using the flowchart shown in FIG. 8, the location information of the first network device and the location information of the first terminal device can be concentrated on the first network device, thereby facilitating the implementation of double-base perception. Further, since the SeMF-LMF network element sends the location information of the terminal device to the first network device under the authorization of the terminal device, the user privacy is protected.

[0192] (4) Case 4: the first communication device is located at the terminal side, such as the first terminal device.

[0193] FIG. 9 is a flowchart of a communication method provided by an embodiment of the application for case 4. As shown in FIG. 9, taking the first terminal device as an example, the method can include:

[0194] S901, the requester of the perception service sends a perception service request to the first terminal device; correspondingly, the first terminal device receives the perception service request.

[0195] As described above, the requester of the perception service can be the terminal device a, the network device a, the AMF network element, or the GMLC. If the requester of the perception service is the terminal device a, and the terminal device a is the first terminal device, S901 and S907 can not be performed.

[0196] S902, the first terminal device sends a location information request 7 to the SeMF-LMF network element; correspondingly, the SeMF-LMF network element receives the location information request 7.

[0197] The location information request 7 is used to request the location information of the network device. For example, the location information request 7 includes the area information.

[0198] S903, the SeMF-LMF network element sends a location information request 8 to the first network device according to the location information request 7; correspondingly, the first network device receives the location information request 8.

[0199] S904, the first network device sends a response of the location information request 8 to the SeMF-LMF network element; correspondingly, the SeMF-LMF network element receives the response of the location information request 8. The response of the location information request 8 includes the location information of the first network device.

[0200] Exemplarily, the SeMF-LMF network element obtains the location information of the first network device, and the SeMF-LMF network element can also obtain the location information of one or more other network devices, which will not be described herein.

[0201] S905, the SeMF-LMF network element sends a response of the location information request 7 to the first terminal device; correspondingly, the first terminal device receives the response of the location information request 7.

[0202] The response of the location information request 7 includes the location information of the Q network devices, and the Q network devices are located in the perception area.

[0203] S906, the first terminal device obtains the perception assistance data, and performs perception on the perception target according to the perception assistance data, the location information of the first network device and the location information of the first terminal device, such as determining the location information of the perception target.

[0204] S907, the first terminal device sends a response of the perception service request to the requestor of the perception service; correspondingly, the requestor of the perception service receives the response of the perception service request.

[0205] By using the flowchart shown in FIG. 9, the location information of the first network device and the location information of the first terminal device can be concentrated on the first terminal device, thereby facilitating the implementation of the double-base perception.

[0206] For the flowchart shown in FIG. 9, in some possible examples, the SeMF-LMF network element can store the identification and location information of the network device capable of providing the perception service, in this case, the SeMF-LMF network element does not need to request the location information of the network device. For example, S903 and S904 do not need to be performed.

[0207] For the above embodiments, it can be understood that:

[0208] (1) The above description focuses on the differences between different flows. In each flow of the present application, the terms and / or descriptions of different flows are consistent and can be referred to each other if there is no special description and logical conflict. In addition, different implementations or different examples can also be referred to or referred to each other.

[0209] (2) The various numbers referred to in the present application are only used for distinguishing, and do not limit the scope of the present application. The step numbers of the above-mentioned flowcharts are only an example of the execution flow, and do not constitute a limitation on the execution sequence of the steps, i.e., the size of the step numbers does not mean the execution sequence, and the execution sequence of the steps should be determined according to their functions and inherent logic. In addition, the steps shown in the various flowcharts are not all the steps that must be executed, and some steps can be added or deleted based on the various flowcharts according to actual needs.

[0210] The above mainly introduces the scheme provided by the embodiments of the present application from the perspective of device / network element interaction. It can be understood that, in order to realize the above functions, the device / network element can include corresponding hardware structures and / or software modules for executing various functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed in the present application, the embodiments of the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0211] The embodiments of the present application can divide the functional units of the device / network element according to the above method examples, for example, each functional unit can be divided according to each function, or two or more functions can be integrated in one unit. The integrated unit can be realized in the form of hardware or software functional unit.

[0212] In the case of using an integrated unit, FIG. 10 shows a possible exemplary block diagram of the apparatus involved in the embodiments of the present application. As shown in FIG. 10, the apparatus 1000 can include a processing unit 1002 and a communication unit 1003. The processing unit 1002 is used to control and manage the actions of the apparatus 1000. The communication unit 1003 is used to support the communication of the apparatus 1000 with other devices. Optionally, the communication unit 1003, also known as a transceiver unit, can include a receiving unit and / or a sending unit, which are used to perform receiving and sending operations, respectively. The apparatus 1000 can also include a storage unit 1001 for storing the program code and / or data of the apparatus 1000.

[0213] The apparatus 1000 can be the first communication apparatus in the embodiments described above. The processing unit 1002 can enable the apparatus 1000 to perform the actions of the first communication apparatus in the method embodiments described above. Alternatively, the processing unit 1002 mainly performs the internal actions of the first communication apparatus in the method embodiments, and the communication unit 1003 can enable the apparatus 1000 to communicate with other devices.

[0214] For example, in an embodiment, the processing unit 1002 is configured to: obtain location information of a first network device and location information of a first terminal device; wherein the first terminal device is configured to receive a first sensing signal transmitted by the first network device, or the first network device is configured to receive a second sensing signal transmitted by the first terminal device; and perform sensing on a sensing target of the first sensing signal or the second sensing signal according to the location information of the first network device and the location information of the first terminal device.

[0215] In a possible design, the processing unit 1002 is configured to: obtain sensing assistance data, the sensing assistance data including time delay information and angle information measured according to the first sensing signal or the second sensing signal; and perform sensing on a sensing target of the first sensing signal or the second sensing signal according to the location information of the first network device and the location information of the first terminal device, including: performing sensing on the sensing target according to the location information of the first network device, the location information of the first terminal device, the time delay information, and the angle information.

[0216] In a possible design, the communication unit 1003 is configured to: send a first location information request to a location management function (LMF) network element; and receive a response to the first location information request, the response including location information of N terminal devices, the N terminal devices including the first terminal device, and N being an integer greater than or equal to 1.

[0217] In a possible design, the first location information request includes identifiers of M terminal devices, and the N terminal devices are some or all of the M terminal devices, and M being an integer greater than or equal to 1.

[0218] In a possible design, the communication unit 1003 is configured to: receive a sensing service request, the sensing service request being configured to request to start a sensing service, and the sensing service request including area information configured to indicate a sensing area; and wherein the first location information request includes the area information, and the N terminal devices are located in the sensing area.

[0219] In a possible design, the first location information request includes the identification of the P network devices; the response to the first location information request further includes the location information of the Q network devices, and the Q network devices include the first network device; where the Q network devices are part or all of the P network devices, and P and Q are integers greater than or equal to 1.

[0220] In a possible design, the identification of the P network devices is in a first identification set, and the location information of the Q network devices is in a first location information set; P is equal to Q; the i-th identification in the first identification set is the identification of the first network device, and the i-th location information in the first location information set is the location information of the first network device, where i is an integer greater than or equal to 1; or, the response to the first location information request further includes a second identification set, the i-th identification in the second identification set is the first identification of the first network device, and the i-th location information in the first location information set is the location information of the first network device; the j-th identification in the first identification set is the second identification of the first network device, where j is an integer greater than or equal to 1; i is not equal to j, and / or the first identification is different from the second identification.

[0221] In a possible design, the communication unit 1003 is configured to: send a second location information request to the first network device; and receive a response to the second location information request, where the response to the second location information request includes the location information of the first network device.

[0222] In a possible design, the communication unit 1003 is configured to: send an authorization request to the first terminal device, where the authorization request is used to request authorization of the location information of the first terminal device for a perception service; and receive a response to the authorization request, where the response is used to confirm the authorization.

[0223] In a possible design, the communication unit 1003 is configured to: receive perception mode information, where the perception mode information is used to indicate a dual-base perception mode.

[0224] It should be understood that the division of units in the above apparatus is only a logical functional division, and in actual implementation, all or part of the units can be integrated into one physical entity, or can be physically separated. The units in the apparatus can all be implemented in the form of software invoked by a processing element; or all be implemented in the form of hardware; or part of the units are implemented in the form of software invoked by a processing element, and part of the units are implemented in the form of hardware. For example, each unit can be a separately established processing element, or can be integrated into a chip of the apparatus, in addition, the unit can also be stored in the form of a program in a memory, and the function of the unit is invoked and executed by a processing element of the apparatus. In addition, all or part of the units can be integrated together, or can be independently implemented. The processing element described herein can be a processor, which can be an integrated circuit with a signal processing capability. In the implementation process, each operation of the above method or each unit can be implemented by an integrated logic circuit of hardware in the processing element, or in the form of software invoked by the processing element.

[0225] In one example, the units in any of the above apparatuses can be one or more integrated circuits configured to implement the above methods, for example, one or more application specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. For another example, when the units in the apparatus can be implemented in the form of a program invoked by a processing element, the processing element can be a processor, such as a central processing unit (CPU), or other processor that can invoke a program. For another example, the units can be integrated together to implement in the form of SoC.

[0226] The above receiving unit is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the apparatus is implemented in the form of a chip, the receiving unit is an interface circuit of the chip for receiving signals from other chips or apparatuses. The above transmitting unit is an interface circuit of the apparatus for transmitting signals to other apparatuses. For example, when the apparatus is implemented in the form of a chip, the transmitting unit is an interface circuit of the chip for transmitting signals to other chips or apparatuses.

[0227] Based on the above embodiments, the embodiments of the present application further provide a communication device. Referring to FIG. 11, the communication device 1100 can include a processor 1101. Optionally, the communication device 1100 can further include a memory 1102. The memory 1102 can be arranged inside the communication device 1100, or arranged outside the communication device 1100. Optionally, the communication device 1100 can further include a transceiver (not shown in the figure).

[0228] Specifically, the processor 1101 can be a CPU, a network processor (NP), or a combination of the CPU and the NP. The processor 1101 can further include a hardware chip. The hardware chip can be an ASIC, a programmable logic device (PLD), or a combination thereof. The PLD can be a complex programmable logic device (CPLD), an FPGA, a generic array logic (GAL), or any combination thereof.

[0229] The processor 1101 and the memory 1102 are connected with each other. Optionally, the processor 1101 and the memory 1102 are connected with each other through a bus 1103. The bus 1103 can be a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, and a control bus. For the convenience of representation, only one thick line is used in FIG. 11, but it does not mean that there is only one bus or only one type of bus.

[0230] In an optional embodiment, the memory 1102 is configured to store programs and the like. Specifically, the programs can include program codes including computer operation instructions. The memory 1102 can include a RAM, and can further include a non-volatile memory such as one or more disk memories. The processor 1101 executes the application programs stored in the memory 1102 to implement the above functions, thereby implementing the functions of the communication device 1100.

[0231] Exemplarily, the communication device 1100 can be the first communication device in the above embodiments.

[0232] In an embodiment, when the communication apparatus 1100 implements the functions of the first communication apparatus in the above-mentioned method embodiments, the transceiver can implement the transceiving operations performed by the first communication apparatus in the above-mentioned method embodiments; the processor 1101 can implement other operations performed by the first communication apparatus in the above-mentioned method embodiments, other than the transceiving operations. For specific details, please refer to the related descriptions in the above-mentioned embodiments, which will not be described in detail here.

[0233] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the cases of A alone, A and B together, and B alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. In addition, unless otherwise specified, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish a plurality of objects, and are not used to limit the order, time sequence, priority, or importance of the plurality of objects.

[0234] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0235] The present application is described with reference to flowcharts and / or block diagrams according to the methods, devices (systems), and computer program products of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce the apparatus for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0236] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart or flowchart(s) and / or block diagram block or blocks.

[0237] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flowchart(s) and / or block diagram block or blocks.

Claims

1. A communication method characterized by comprising: The method comprises: obtaining position information of a first network device and position information of a first terminal; wherein the first terminal is configured to receive a first sensing signal transmitted by the first network device, or the first network device is configured to receive a second sensing signal transmitted by the first terminal; sensing a sensing target of the first sensing signal or the second sensing signal according to the position information of the first network device and the position information of the first terminal.

2. The method of claim 1, wherein, The method further comprises: obtaining sensing assistance data, the sensing assistance data comprising time delay information and angle information measured according to the first sensing signal or the second sensing signal; sensing the sensing target of the first sensing signal or the second sensing signal according to the position information of the first network device and the position information of the first terminal comprises: sensing the sensing target according to the position information of the first network device, the position information of the first terminal, the time delay information and the angle information.

3. The method according to claim 1 or 2, characterized in that, The obtaining of the position information of the first network device and the position information of the first terminal comprises: sending a first position information request to a location management function (LMF) network element; receiving a response to the first position information request, the response comprising position information of N terminals, the N terminals including the first terminal, N being an integer greater than or equal to 1.

4. The method of claim 3, wherein, The first position information request comprises identifiers of M terminals, the N terminals being some or all of the M terminals, M being an integer greater than or equal to 1.

5. The method according to claim 3 or 4, characterized in that, The method further comprises: receiving a sensing service request, the sensing service request being configured to request initiation of a sensing service, the sensing service request comprising area information configured to indicate a sensing area; wherein the first position information request comprises the area information, and the N terminals are located within the sensing area.

6. The method according to any one of claims 3 to 5, characterized in that, The first position information request comprises identifiers of P network devices; the response to the first position information request further comprises position information of Q network devices, the Q network devices including the first network device; wherein the Q network devices are some or all of the P network devices, P and Q being integers greater than or equal to 1.

7. The method of claim 6, wherein, The identifiers of the P network devices are located in a first identifier set, and the position information of the Q network devices is located in a first position information set; P is equal to Q. The i-th identifier in the first identifier set is an identifier of the first network device, and the i-th position information in the first position information set is position information of the first network device, i being an integer greater than or equal to 1; or the response to the first position information request further comprises a second identifier set, the i-th identifier in the second identifier set being a first identifier of the first network device, and the i-th position information in the first position information set being position information of the first network device; the j-th identifier in the first identifier set being a second identifier of the first network device, j being an integer greater than or equal to 1; i is not equal to j, and / or the first identifier is different from the second identifier.

8. The method according to any one of claims 1 to 5, characterized in that, The method further comprises: sending a second location information request to the first network device; receiving a response to the second location information request, the response comprising location information of the first network device.

9. The method of claim 1 or 2, wherein, The method further comprises: sending an authorization request to the first terminal, the authorization request being used to request authorization of the location information of the first terminal for a perception service; receiving a response to the authorization request, the response being used to confirm the authorization.

10. The method according to any one of claims 1 to 9, characterized in that, The method further comprises: receiving perception mode information, the perception mode information being used to indicate a dual-base perception mode.

11. A communications device, characterized by comprise a module or a unit for performing the method according to any one of claims 1 to 10.

12. A communications device, characterized by comprise a processor configured to invoke a computer program, so that the method according to any one of claims 1 to 10 is performed.

13. The communication apparatus according to claim 12, wherein Further comprise a memory coupled to the processor, the memory has a computer program stored therein; the processor is configured to invoke part or all of the computer program in the memory, so that the method according to any one of claims 1 to 10 is performed.

14. A computer-readable storage medium, characterized in that, The storage medium has a computer program stored therein, when part or all of the computer program is executed by a computer, so that the method according to any one of claims 1 to 10 is performed.

15. A computer program product, characterised in that, When the computer reads and executes the computer program product, the method according to any one of claims 1 to 10 is performed.

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