Method, apparatus and device for performing sensing service and medium

Abstract

The application discloses an execution method and device of a sensing service, equipment and a medium, and relates to the field of sensing. The method is executed by a first communication node, and the method comprises the following steps: receiving first information sent by an associated UE or a second communication node; determining switching of a sensing node based on the first information, wherein the sensing node is used for executing a sensing service on a sensing target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE. The method provided in the application controls the switching of the sensing node by the first communication node, ensures that the sensing target can be uniquely identified when switching between different sensing nodes, and thus the continuity of the sensing service is maintained.

Description

Method, device, equipment and medium for executing perception service Technical Field

[0001] The present application relates to the field of perception, and in particular to a method, apparatus, device and medium for executing a perception service. Background Art

[0002] One of the new technologies proposed by the 3GPP (Third Generation Partnership Project) is to integrate wireless sensing with mobile communications to achieve converged sensing communication services. Using higher frequency bands, wider bandwidths, and larger antenna arrays, the entire communication system can be used as a sensor to achieve high-precision, high-resolution perception.

[0003] For the communication service of converged perception, during the execution of the perception service, the perception target may be in a state of constant movement, and the perception target can be switched between different perception nodes.

[0004] However, when the sensing target moves between different sensing nodes, how to uniquely identify the sensing target between different sensing nodes and maintain the continuity of the sensing service is a problem that needs to be solved urgently.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a method, apparatus, device, and medium for executing a sensing service. The technical solution is as follows:

[0007] According to one aspect of an embodiment of the present application, a method for executing a perception service is provided, the method being executed by a first communication node, the method including:

[0008] receiving first information sent by an associated UE or a second communication node;

[0009] The switching of the perception node is determined based on the first information, the perception node is used to perform a perception service for the perception target corresponding to the associated UE, and the communication range of the second communication node and the communication range of the associated UE have an intersection.

[0010] According to one aspect of an embodiment of the present application, a method for executing a perception service is provided, the method being executed by an associated UE, the method including:

[0011] Sending first information to a first communication node; or receiving a sending configuration of a second reference signal sent by the first communication node, where the second reference signal is used to be measured by the second communication node and then send the first information to the first communication node;

[0012] The first information is used to assist the first communication node in determining the switching of the perception node, the perception node is used to perform perception services on the perception target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE.

[0013] According to one aspect of an embodiment of the present application, a method for executing a perception service is provided, the method being executed by a second communication node, the method including:

[0014] Sending a first reference signal, where the first reference signal is used to send first information to a first communication node after being measured by an associated UE; or sending the first information to the first communication node;

[0015] The first information is used to assist the first communication node in determining the switching of the perception node, the perception node is used to perform perception services on the perception target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE.

[0016] According to one aspect of an embodiment of the present application, a device for executing a perception service is provided, the device including:

[0017] A first receiving module, configured to receive first information sent by an associated UE or a second communication node;

[0018] A first switching module is used to determine the switching of the perception node based on the first information, the perception node is used to perform a perception service for the perception target corresponding to the associated UE, and the communication range of the second communication node and the communication range of the associated UE have an intersection.

[0019] According to one aspect of an embodiment of the present application, a device for executing a perception service is provided, the device including:

[0020] A second sending module is configured to send the first information to the first communication node; or

[0021] a second receiving module, configured to receive a sending configuration of a second reference signal sent by the first communication node, where the second reference signal is used to send first information to the first communication node after being measured by the second communication node;

[0022] The first information is used to assist the first communication node in determining the switching of the perception node, the perception node is used to perform perception services on the perception target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE.

[0023] According to one aspect of an embodiment of the present application, a device for executing a perception service is provided, the device including:

[0024] A third sending module is configured to send a first reference signal, where the first reference signal is used to send first information to the first communication node after being measured by the associated UE; or to send the first information to the first communication node;

[0025] The first information is used to assist the first communication node in determining the switching of the perception node, the perception node is used to perform perception services on the perception target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE.

[0026] According to one aspect of the present application, a perception device is provided, wherein the communication device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the above-mentioned method for executing the perception service.

[0027] According to one aspect of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is used to be executed by a processor to implement the above-mentioned method for executing the perception service.

[0028] According to one aspect of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the execution method of the above-mentioned perception service.

[0029] According to one aspect of the present application, a computer program product is provided, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned method for executing the perception service.

[0030] The technical solutions provided in the embodiments of the present application can bring the following beneficial effects:

[0031] Based on the first communication node receiving first information sent by the associated UE and the second communication node, the first communication node determines, based on the content of the first information, whether to switch the sensing node, wherein the sensing node is used to perform a sensing service for the sensing target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE. When the sensing target moves between different sensing nodes, the first communication node reasonably switches the sensing node during the movement of the sensing target, can uniquely identify the sensing target, and thus ensure the continuity of the sensing service. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] FIG1 shows a schematic diagram of the architecture of a communication system provided by an exemplary embodiment of the present application;

[0034] FIG2 is a schematic diagram showing a 5G (5th Generation Mobile Communication Technology) system architecture provided by an exemplary embodiment of the present application;

[0035] FIG3 shows a schematic diagram of device-free perception / device-based perception provided by an exemplary embodiment of the present application;

[0036] FIG4 shows a schematic diagram of a wireless sensing mode provided by an exemplary embodiment of the present application;

[0037] FIG5 shows a flow chart of perception triggered by AF (Application Function) provided by an exemplary embodiment of the present application;

[0038] FIG6 shows a UE-triggered perception flow chart provided by an exemplary embodiment of the present application;

[0039] FIG7 shows a flowchart of a UE-2-UE sensing mode controlled by a SF (Sensing Function) provided by an exemplary embodiment of the present application;

[0040] FIG8 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0041] FIG9 shows a schematic diagram of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0042] FIG10 shows a flowchart of a method for executing a perception service provided by an exemplary embodiment of the present application;

[0043] FIG11 is a schematic diagram showing a method for executing a sensing service according to an exemplary embodiment of the present application;

[0044] FIG12 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0045] FIG13 is a schematic diagram showing a method for executing a sensing service according to an exemplary embodiment of the present application;

[0046] FIG14 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0047] FIG15 is a schematic diagram showing a method for executing a sensing service according to an exemplary embodiment of the present application;

[0048] FIG16 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0049] FIG17 is a schematic diagram showing a method for executing a sensing service according to an exemplary embodiment of the present application;

[0050] FIG18 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0051] FIG19 shows a flowchart of a method for executing a perception service provided by an exemplary embodiment of the present application;

[0052] FIG20 shows a flowchart of a method for executing a perception service provided by an exemplary embodiment of the present application;

[0053] FIG21 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application;

[0054] FIG22 shows a structural block diagram of a perception service execution device provided by an exemplary embodiment of the present application;

[0055] FIG23 shows a structural block diagram of a perception service execution device provided by an exemplary embodiment of the present application;

[0056] FIG24 shows a structural block diagram of a perception service execution device provided by an exemplary embodiment of the present application;

[0057] FIG25 shows a structural block diagram of a perception service execution device provided by an exemplary embodiment of the present application;

[0058] FIG26 shows a structural block diagram of a sensing device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0059] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0060] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0061] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0062] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0063] Before introducing the technical solutions of this application, we first introduce and explain some of the background technologies involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0064] Core network equipment: refers to the communication equipment located in the core network of the communication network, which is responsible for processing and forwarding data traffic, providing network connection and service management functions.

[0065] Associated UE: UE stands for user equipment, also known as terminal equipment. An associated UE is a user equipment that has established a connection and is communicating with the communication network. For example, an associated UE is an auxiliary UE that assists the core network device in switching the perception node when performing perception services.

[0066] Access network equipment: This refers to the communications equipment located within the access network of a communications network, responsible for connecting UEs and providing access services. Access network equipment typically includes base stations, which are used to communicate with associated UEs and provide an interface for accessing the network.

[0067] Access and Mobility Management Function (AMF): AMF is a functional module in the core network equipment that handles tasks related to access and mobility management. It communicates with the serving base station and associated UEs to manage access, mobility, and other functions of the associated UEs. The AMF can send a sensing capability request to the serving base station to obtain the serving base station's sensing capability information.

[0068] SF (Perception Function): Another functional module in the core network, the SF is responsible for managing and controlling perception sessions. It establishes and maintains perception sessions with the serving base station, neighboring base stations, and associated UEs, and handles tasks related to perception sessions, such as policy control, user authentication, and security management. The SF can send perception capability requests to the serving base station and neighboring base stations to obtain their perception capability information.

[0069] Serving NodeB: The NodeB to which the associated UE is currently connected and provides the serving cell. The Serving NodeB establishes a connection with the associated UE and handles communications with the associated UE. The Serving NodeB communicates with the AMF and SF, providing them with information about sensing capabilities and receiving sensing capability requests from them.

[0070] Neighboring base station: refers to the base station that provides the neighboring cell. Neighboring base stations participate in the perception capability exchange as candidate base stations. When the UE needs to switch base stations or obtain better perception capabilities, the neighboring base station can send a perception capability request to the AMF and SF and provide its own perception capability information.

[0071] FIG1 shows a schematic diagram of the architecture of a communication system provided by an exemplary embodiment of the present application. The communication system 100 may include: a terminal device 10 , a second communication node 20 , and a first communication node 30 .

[0072] The terminal device 10 may refer to a UE, a STA (Station), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5GS (5th Generation System) or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in each cell managed by an access network device 20. The terminal device may also be referred to as a terminal or UE for short, and those skilled in the art will understand its meaning. In some embodiments, the terminal device refers to an associated UE.

[0073] In some embodiments, the second communication node 20 is an access network device 20, which is a device deployed in the access network to provide wireless communication functions for the terminal device 10. The access network device 20 may include various forms of macro base stations, micro base stations, relay stations, etc. In systems using different wireless access technologies, the names of devices with access network device functions may be different. For example, in the 5G NR system, it is called gNodeB (the Next Generation Node B, next generation base station) or gNB (Next Generation Node B, next generation base station). With the evolution of communication technology, the name "access network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as access network devices. In some embodiments, the second communication node 20 can be a terminal device.

[0074] In some embodiments, a communication relationship can be established between the terminal device 10 and the core network device 30 through the access network device 20. For example, in an LTE (Long Term Evolution) system, the access network device 20 can be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or one or more eNodeBs in the EUTRAN; in a 5G NR (New Radio) system, the access network device 20 can be a RAN (Radio Access Network) or one or more gNBs in the RAN.

[0075] In some embodiments, the first communication node 30 is a core network device 30. The core network device 30 is a network element deployed in the core network. The function of the core network device 30 is mainly to provide user connection, user management, and service bearer, and to provide an interface to the external network as a bearer network. For example, the core network network elements in the 5G NR system may include network elements such as SF, AMF entity, UPF (User Plane Function) entity, and SMF (Session Management Function) entity. In the embodiments of the present application, unless otherwise specified, the "network device" refers to the core network device 30. In some embodiments, the first communication node 30 may be an access network device.

[0076] In some embodiments, the access network device 20 and the core network device 30 communicate with each other via an air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via an air interface technology, such as the Uu interface.

[0077] The "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in the embodiments of the present application may be applicable to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (e.g., B5G (Beyond 5G) systems, 6G systems (6th Generation System, sixth generation mobile communication systems)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems, which are not limited in this application.

[0078] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be a cell corresponding to the access network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0079] Before introducing the technical solutions of this application, we first introduce and explain some of the relevant technical knowledge involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0080] The 5G network system architecture is shown in Figure 2. Among them, the UE connects to the AN at the access layer through the Uu port, exchanges access layer messages and wireless data transmission, and connects to the AMF at the non-access layer (None Access Stratum, NAS) through the N1 port, and exchanges NAS messages. AMF is the mobility management function in the core network equipment, and SMF is the session management function in the core network equipment. In addition to managing the mobility of the UE, the AMF is also responsible for forwarding session management-related messages between the UE and the SMF. PCF (Policy Control Function) is a policy management function in the core network equipment, which is responsible for formulating policies related to UE mobility management, session management, billing, etc. UPF is a user plane function in the core network equipment, which transmits data with the external data network through the N6 interface and with the AN (Access Network) through the N3 interface.

[0081] Current cellular networks, including 5G networks, are used solely for communication. However, the radio electromagnetic wave signals used by cellular networks can be used not only for wireless data transmission and communication but also for environmental perception, such as user motion or gesture recognition, respiratory monitoring, device speed measurement, environmental imaging, and weather monitoring. Therefore, future cellular networks could be considered for use not only for communication and data transmission but also for acquiring sensory information. Table 1 lists some sensory information at different levels.

[0082] Table 1: Perceptual information at different levels

[0083] 1. Definition of Wireless Sensing

[0084] In the integration of communication and perception, the perception capability focuses on wireless signal perception, that is, by analyzing the direct, reflected, and scattered signals of radio waves, the perception of the environment and / or target object information in the environment (such as attributes and status, etc.) is obtained, and the positioning, ranging, speed measurement, imaging, detection, identification, environmental reconstruction and other functions are completed to realize the perception exploration of the physical world.

[0085] Passive perception: A sensing node (on the network side or at the terminal) senses by acquiring electromagnetic waves (such as terahertz waves) emitted by the target object or by reflecting electromagnetic waves from outside the sensing node and the target object. This is an example of China's passive imaging sensing technology for radio astronomy.

[0086] Active sensing: A transmitting node (network or terminal) transmits electromagnetic waves. After reflection from a target object, a receiving node receives the echo for sensing. This is an example of active radar-based sensing technology that transmits a detection signal. The node that receives the reflected wave is not necessarily the same node that sent the detection signal. In other words, multiple sensing nodes can achieve active sensing through some form of joint processing.

[0087] 2. Perception scenarios and use cases

[0088] In smart transportation scenarios, based on integrated communication and perception base stations or collaboration between base stations, perception of the road environment is achieved, high-precision map construction is effectively realized, and beyond-line-of-sight assistance is provided for the safe operation of autonomous vehicles; based on integrated communication and perception base stations or collaboration between base stations, all-round, all-weather, and uninterrupted detection of the movement trajectory and speed of moving vehicles is achieved, and the perception information is uploaded to the processing center, comprehensively improving the intelligent perception capability of the operation status of highways and providing data support for road supervision; based on integrated communication and perception base stations, perception of the railway track environment is achieved, and all-weather foreign object intrusion detection around high-speed railways is realized.

[0089] In smart low-altitude scenarios, all-round and multi-angle perception of the airspace is carried out based on an integrated communication and perception base station or collaboration between base stations, and the perception results are provided to drones. This can provide redundancy for obstacle avoidance warning and improve the success rate of drone obstacle avoidance. Based on an integrated communication and perception base station or collaboration between base stations, full airspace perception is carried out to locate and track drones that intrude into the regulatory range, thereby realizing drone intrusion monitoring for fixed areas.

[0090] In smart life scenarios, based on the collaboration between base stations and terminals, or the spontaneous transmission and reception of terminals, or the collaborative working mode between terminals, breathing monitoring, fitness monitoring, gesture / posture recognition, etc. are carried out by sensing changes in wireless channels. Based on the integrated communication perception base station or the collaboration between base stations, the signal link attenuation in the communication link is measured, and then the relationship between signal link attenuation and weather indicators is analyzed to obtain the corresponding weather indicators for weather monitoring.

[0091] In smart network scenarios, information such as the density and location of idle terminals in a cell can be obtained based on integrated communication-aware base stations or collaboration between base stations to assist in energy conservation and optimization of base station resource scheduling within the cell.

[0092] In smart transportation scenarios, continuous tracking of vehicles and real-time dynamic monitoring of vehicle status can be achieved based on integrated communication and perception base stations or collaboration between base stations. For vehicles with wireless communication capabilities, vehicle perception accuracy can also be improved through vehicle collaborative perception.

[0093] In smart low-altitude scenarios, based on integrated communication and perception base stations or collaboration between base stations, drones that intrude into the regulatory area are located and tracked, and then actions are taken to drive away "illegally flying" drones. For networked drones with wireless communication capabilities, drone collaborative perception can also be used to identify the flight status of the drone, roadblocks in the flight route, etc., to provide auxiliary flight services.

[0094] In smart life scenarios, by carrying a terminal with communication capabilities, based on the collaboration between base stations and terminals, or the spontaneous transmission and reception of terminals, or the collaborative working mode between terminals, breathing monitoring, fitness monitoring, gesture / posture recognition, etc. of a specific human body can be performed to achieve accurate real-time dynamic monitoring.

[0095] In smart network scenarios, synaesthesia technology is used to assist in improving beam management and channel estimation accuracy, enhance the timeliness of terminal beam tracking, improve channel estimation accuracy and reduce feedback overhead.

[0096] Per-Area / Object Sensing: 5G-A synaesthesia scenarios can be divided into Per-Area synaesthesia scenarios and Per-Object synaesthesia scenarios, depending on whether the perception requirements are primarily focused on a designated perception area or a designated perception target. Perception needs are ubiquitous across all industries. We call these Per-Area synaesthesia scenarios the scenarios that require efficient perception of the real-time status of roads, vehicles, and people in factories, roads, low altitudes, cities, and even larger time and space ranges. We call these Per-Object synaesthesia scenarios the scenarios that utilize synaesthesia technology to continuously perceive and track the perceived objects in order to obtain dynamic monitoring of the perceived object's status.

[0097] Device-based / free sensing: As shown in Figure 3, sensing scenarios can be categorized into device-based and device-free scenarios based on whether the sensing target has the ability to send or receive signals. For example, in flight path management and base station and terminal beam management, the sensing targets, drones and terminals, are user devices with the ability to send or receive signals, thus falling into the device-based scenario. In weather monitoring and respiratory monitoring, the sensing targets, rain and people, are targets without the ability to send or receive signals, thus falling into the device-free scenario.

[0098] 3. Wireless sensing mode

[0099] Sensing functionality is supported in 3GPP networks by adding a sensing control element (Sensing Function) and corresponding processes. When an application sends a sensing request for a sensing target to the core network device of the 3GPP network, the core network device selects the correct access network device or auxiliary UE (associated UE) through the SF or AMF, triggers the ability to perform sensing-related wireless measurements, starts measuring sensing information, and generates sensing results.

[0100] Regarding perception, there are many main wireless perception modes for synaesthesia integration. Figure 4 shows six possible modes of wireless perception.

[0101] a) Base station echo sensing (gNB autonomous sensing): The base station sends a sensing signal and receives an echo signal.

[0102] b) Inter-base station sensing (gNB-2-gNB sensing): Base station B receives the sensing signal sent by base station A.

[0103] c) Air interface uplink perception (UE-2-gNB perception): The base station receives the perception signal sent by the terminal;

[0104] d) Air interface downlink perception (gNB-2-UE perception): The terminal receives the perception signal sent by the base station;

[0105] e) Terminal echo perception (UE autonomous perception): The terminal sends a perception signal and receives an echo signal;

[0106] f) Inter-terminal perception (UE-2-UE perception): Terminal B receives the perception signal sent by terminal A.

[0107] Figure 5 shows a possible flowchart for controlling access network devices or UEs to perform sensing operations. In step 1, the sensing request is triggered by the AF, so it is called an AF-triggered sensing process. The sensing request belongs to the MT-SR (Mobile Terminated-Sensing Request). In addition to the MT-SR, sensing requests also include the MO-SR (Mobile Originated-Sensing Request) as shown in Figure 4, and the NI-SR (Network Induced-Sensing Request) that may be triggered by network elements within the network.

[0108] Step 6 in Figure 5 and step 4 in Figure 6 illustrate the air interface awareness signaling process. This process can be categorized based on the interacting network elements: SF-gNB signaling interaction, SF-UE signaling interaction, gNB-UE signaling interaction, and UE-UE signaling interaction. Because different awareness modes involve different types of sensing nodes (UE / gNB), the air interface signaling processes required by these modes also differ, as shown in Table 2.

[0109] Table 2: Air interface signaling processes corresponding to different perception modes

[0110] The following describes the air interface perception signaling process using the terminal perception mode (i.e., UE-2-UE perception, UE self-transmitting and self-receiving perception) as an example.

[0111] For the terminal perception mode (i.e., UE-2-UE perception, UE self-transmitting and self-receiving perception), its basic process design needs to consider the different coverage scenarios of the terminal - in coverage (IC) and out of coverage (OOC).

[0112] Figure 7 illustrates the air interface sensing signaling flow for a UE-2-UE sensing mode controlled by an SF. For other sensing modes involving UEs, the air interface sensing signaling flow is similar, requiring only appropriate modifications. For example, for UE-spontaneous sensing, the STx UE (Sensing Transmitting UE) and the SRx UE (Sensing Receiving UE) are the same UE; for UE-2-gNB sensing mode, the gNB replaces the SRx UE; and for gNB-2-UE sensing mode, the gNB replaces the STx UE.

[0113] 4. NR RRC (Radio Resource Control) Measurement

[0114] Measurements primarily refer to mobility measurements in a connected state. After the network sends a measurement configuration to the UE, the UE detects the signal quality status of neighboring cells based on the measurement objects, reporting configuration, and other parameters indicated in the measurement configuration. The UE then feeds back the measurement reporting information to the network for handover or to improve the neighbor cell relationship list.

[0115] 4.1 Measurement Configuration

[0116] In NR, the network sends measurement configuration information to the connected UE through RRC signaling. The UE performs measurements (same frequency, different frequency, different technology) according to the content of the measurement configuration information, and then reports the measurement results to the network. The network uses RRC connection reconfiguration to perform measurement configuration. The measurement configuration information includes the following:

[0117] 1) Measurement Object

[0118] For both intra-frequency and inter-frequency measurements, each measurement object indicates the time-frequency position and subcarrier spacing of the reference signal to be measured. For the cells associated with this measurement object, the network may configure a cell offset list, a blacklist cell list, and a whitelist cell list.

[0119] For cross-technology measurements, each measurement object corresponds to a single E-UTRA frequency. For cells associated with that E-UTRA frequency, the network may configure a cell offset list, a blacklist cell list, and a whitelist cell list.

[0120] The UE does not perform any operation on the blacklisted cells in the event evaluation and measurement report. The UE performs event evaluation and measurement report on the whitelisted cells.

[0121] For each measurement frequency, the network configures an SMTC (Serving Measurement and Timing Configuration) to indicate the time when the UE receives the SSB (Synchronization Signal Block) on the neighboring cell corresponding to the frequency. The SMTC configuration includes the SMTC period, the start time offset of the SMTC within a period, the duration of the SMTC, etc.

[0122] 2) Reporting Configuration

[0123] Each measurement object corresponds to one or more reporting configurations. Reporting configurations include:

[0124] Reporting criteria: This refers to the triggering conditions for the UE to perform measurement reporting, which can be periodic triggered reporting or event triggered reporting.

[0125] RS (Reference Signal) type: RS used by the UE for beam and cell measurements, which can be SS / PBCH (Synchronization Signal / Physical Broadcast Channel) blocks or CSI-RS (Channel State Information Reference Signal).

[0126] Reporting format: The UE reports measurement quantities (e.g., RSRP) for each cell and each beam. It also includes other relevant information, such as the maximum number of cells reported by the UE and the maximum number of beams reported for each cell.

[0127] 3) Measurement Identity

[0128] A single ID associates the measurement object with the reporting configuration. A measurement object can be associated with multiple reporting configurations at the same time, and a reporting configuration can also be associated with multiple measurement objects at the same time, distinguished by the measurement identifier.

[0129] 4) Measurement Gap

[0130] Indicates when the UE performs inter-frequency / inter-system measurements. The UE performs inter-frequency / inter-system measurements during a measurement gap. The measurement gap configuration includes the measurement gap period, the start time offset within a measurement gap period, and the measurement gap duration.

[0131] 4.2 Measurement Reporting

[0132] The UE performs measurements according to the measurement configuration issued by the network, and evaluates the measurement report when certain trigger conditions are met. If the reporting conditions are met, the UE will fill in the measurement report and include it in the measurement report and send it to the network.

[0133] Measurement reporting is divided into three categories:

[0134] Event triggering

[0135] Periodic reporting

[0136] Event trigger periodic reporting

[0137] In some embodiments, the core network device determines whether to switch the perception node based on the first information sent by the associated UE or access network device. The first information indicates information related to the mobility of the associated UE, assisting the core network device in deciding to switch the perception service between different perception nodes. The reporting method of the first information includes but is not limited to at least one of the following three implementation methods (the order does not represent the advantages and disadvantages of the implementation methods):

[0138] Implementation method 1: Associated UE measures downlink reference signal;

[0139] Implementation method 2: The associated UE sends an uplink reference signal;

[0140] Implementation method three: The associated UE measures the downlink reference signal.

[0141] It should be noted that, in the embodiments of the present application, perception can be equivalent to or replaced by at least one of the following: positioning, ranging, speed measurement, angle measurement, target imaging, target detection, target tracking, and target recognition.

[0142] The following describes these three implementation methods respectively:

[0143] Implementation method 1: Associated UE measures downlink reference signal

[0144] Figure 8 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application, wherein a serving base station provides a serving cell for an associated UE, a neighboring base station provides a neighboring cell for an associated UE, and the AMF and SF are network elements in the core network device responsible for sensing related functions. The method is jointly executed by the core network device, the associated UE, and the access network device, and includes all or part of the following steps:

[0145] Step 601: The core network device receives a sensing request;

[0146] In some embodiments, after receiving a perception request, the core network device initiates a perception session with the access network device, where the perception session is used to implement a perception service for the perception target. The perception request received by the core network device includes at least one of the following information or parameters:

[0147] Perception service type: at least one of intrusion detection, weather monitoring, and UAV (Unmanned Aerial Vehicle) identification, used to distinguish the service type information of perception scenario use cases;

[0148] · Sense at least one of the following characteristics of the service: periodicity, aperiodicity, or event triggering;

[0149] QoS (Quality of Service) requirements for sensing services, such as at least one of the following indicators: location accuracy, velocity accuracy, sensing resolution, maximum sensing service latency, refresh rate, confidence level, missed detection rate, and false alarm rate;

[0150] Awareness service continuity indication information: The awareness service may explicitly indicate in the awareness request that the awareness service needs to ensure awareness service continuity; or it may be indicated implicitly, for example, by indicating that the awareness service is periodic and has a high refresh rate requirement;

[0151] Sensing target information: indicates that the sensing target is an active sensing target and / or indicates the ID information of the UE associated with the sensing target.

[0152] In some embodiments, the core network device initiates a perception session based on the perception request, implements a perception service for the perception target through the perception session, and further ensures the continuity of the perception service.

[0153] In some embodiments, the perception request may be a request sent by any one of the associated UE, access network device, core network device, and AF.

[0154] Step 602: Associate UE reporting capability information;

[0155] In some embodiments, the core network device includes at least one of an AMF for managing access, mobility and other functions of associated UEs and a SF for responsible for perception session management and control.

[0156] In some embodiments, the associated UE reports capability information to the access network device / or core network device based on a capability information reporting request of the access network device / or core network device. The capability information reporting request includes capability information instructing the associated UE to provide service continuity awareness.

[0157] In some embodiments, the associated UE of the sensing target may report capability information related to sensing service continuity to the access network device and the core network device. The associated UE reporting capability information includes: the associated UE reporting capability information to the access network device and / or the core network device.

[0158] The capability information is used to indicate whether the associated UE supports the capability associated with the first information. For example, the capability information is used to indicate whether the associated UE supports at least one of the measurement capability, generation capability, and reporting capability associated with the first information.

[0159] In some embodiments, the capability information includes the associated UE's capability to measure a downlink reference signal. Optionally, the capability information includes: the associated UE's capability to measure a downlink reference signal sent by an access network device corresponding to a current serving cell, and / or the associated UE's capability to measure a downlink reference signal sent by an access network device corresponding to a neighboring cell.

[0160] In some embodiments, the neighboring cell may be classified as at least one of a same-frequency neighboring cell, an inter-frequency neighboring cell, and an inter-system neighboring cell. The associated UE's measurement capability of a downlink reference signal sent by an access network device corresponding to the neighboring cell includes at least one of the following: the measurement capability of a downlink reference signal sent by a same-frequency neighboring cell, the measurement capability of a downlink reference signal sent by an inter-frequency neighboring cell, and the measurement capability of a downlink reference signal sent by an inter-system neighboring cell. Exemplarily, the associated UE's measurement capability of a downlink reference signal includes at least one of capability parameters such as whether measurement is supported, whether reporting is supported, which downlink reference signal is supported, whether same-frequency measurement is possible, whether inter-frequency measurement is possible, whether inter-system measurement is possible, and the shortest switching time for inter-frequency measurement.

[0161] In some embodiments, the capability information includes at least one of a measurement capability and a reporting capability of the associated UE for a downlink reference signal.

[0162] Step 603: The core network device sends a first request to the access network device;

[0163] In some embodiments, the core network device sends the first request to the access network device, including: the core network device sends the first request to the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell.

[0164] The first request is used to request configuration of time-frequency resources of a downlink reference signal.

[0165] In some embodiments, the downlink reference signal is used by the associated UE to perform measurements related to ensuring perceived service continuity.

[0166] In some embodiments, the downlink reference signal may be at least one of reference signals such as DL Sensing RS (Downlink Sensing Reference Signal), PRS (Primary Synchronization Signal), SSB or CSI-RS.

[0167] In some embodiments, by sending a first request to the access network device, the core network device obtains the configuration of the time-frequency resources of the downlink reference signal so as to correctly instruct the associated UE to receive the downlink reference signal at the appropriate time-frequency resource position and frequency domain resource position. The core network device can schedule, optimize, correct and supplement the configuration of the time-frequency resources, thereby generating a measurement configuration of the downlink reference signal.

[0168] Step 604: The access network device determines the configuration of time-frequency resources of the downlink reference signal;

[0169] In some embodiments, after receiving the first request sent by the core network device, the access network device determines the configuration of the time-frequency resources of the downlink reference signal according to the current network status and wireless resource conditions.

[0170] In some embodiments, the access network device corresponding to the serving cell determines the configuration of time-frequency resources for the downlink reference signal based on the current network status and resource availability, namely, determines at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location of the downlink reference signal. Optionally, this time-frequency resource configuration also includes a reporting configuration. The access network device includes this time-frequency resource configuration in a first response and returns it to the core network device.

[0171] In some embodiments, in addition to at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location, the configuration of the time-frequency resource of the downlink reference signal also includes at least one of the measurement quantity, measurement period, and reporting configuration of the downlink reference signal.

[0172] Downlink reference signal measurement quantity: used to specify the parameters to be measured, such as at least one of RSRP, RSRQ, and SINR. These measurement quantities are used to evaluate the performance and quality of the serving cell and / or neighboring cells.

[0173] Downlink reference signal measurement period: specifies the time interval for the associated UE to perform serving cell and / or neighbor cell measurements, which determines when the associated UE performs measurements and obtains measurement results;

[0174] Downlink reference signal reporting configuration: Determines the reporting method for measurement results, including event-triggered and periodic reporting. Event-triggered reporting triggers reporting when measurement results meet certain preset conditions; periodic reporting reports measurement results at fixed intervals.

[0175] The access network device sends a first response to the core network device, including: the access network device corresponding to the serving cell sends a first response to the core network device, and the first response includes the configuration of the time-frequency resources of the downlink reference signal of the serving cell, and / or the access network device corresponding to the neighboring cell sends a first response to the core network device, and the first response includes the configuration of the time-frequency resources of the downlink reference signal of the neighboring cell.

[0176] Step 605: The core network device receives the first response sent by the access network device;

[0177] The first response includes: configuration of time-frequency resources of the downlink reference signal.

[0178] In some embodiments, the core network device obtains the configuration of the time-frequency resources of the downlink reference signal of the access network device, including: obtaining the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the neighboring cell.

[0179] Step 606: The core network device provides the associated UE with a measurement configuration of a downlink reference signal;

[0180] The downlink reference signal measurement configuration is a downlink reference signal measurement configuration of a serving cell and / or a neighboring cell, and the serving cell and / or neighboring cell measurement is performed to ensure the continuity of the perception service.

[0181] In some embodiments, the core network device provides the measurement configuration of the downlink reference signal to the associated UE, including the core network device sending the measurement configuration of the downlink reference signal of the access network device corresponding to the serving cell and / or the measurement configuration of the downlink reference signal of the access network device corresponding to the neighboring cell to the associated UE.

[0182] In some embodiments, a downlink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The downlink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the downlink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0183] In some embodiments, a core network device receives a time-frequency resource configuration for a downlink reference signal sent by an access network device corresponding to a serving cell and / or an access network device corresponding to a neighboring cell, and determines a downlink reference signal measurement configuration based on the time-frequency resource configuration. In addition to at least one of a time domain resource location, a frequency domain resource location, and a spatial domain resource location, the downlink reference signal measurement configuration also includes at least one of a downlink reference signal measurement quantity, a measurement period, and a reporting configuration.

[0184] In some embodiments, the measurement configuration of the downlink reference signal may be generated, added, or modified by the core network device according to the configuration of the time-frequency resources. For example, if the configuration of the time-frequency resources reported to the core network device by the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell does not include information such as the measurement amount, measurement period, and reporting configuration of the downlink reference signal, the core network device may generate information such as the measurement amount, measurement period, and reporting configuration of the downlink reference signal; if the configuration of the time-frequency resources reported to the core network device by the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell includes information such as the measurement amount, measurement period, and reporting configuration of the downlink reference signal, when generating the measurement configuration, the core network device may select part of the configuration of the time-frequency resources, and then supplement the part of the configuration as the measurement configuration, or generate the measurement configuration after modifying part of the configuration of the time-frequency resources. In some embodiments, the measurement configuration of the downlink reference signal may be sent via RRC or NAS (Non-Access Stratum) signaling, and may be carried by one or more signaling messages. For example, a Provide Sensing Assistance Data message and a Sensing Information Request message can be used to carry downlink reference signal measurement configurations. In some embodiments, the Provide Sensing Assistance Data message is used to provide sensing assistance data to an associated UE, which may include downlink reference signal measurement configurations. The Sensing Information Request message is used to request an associated UE to provide sensing information, which may include downlink reference signal measurement configurations.

[0185] In some embodiments, the core network device sends perception assistance data to the associated UE, where the perception assistance data carries a measurement configuration of a downlink reference signal.

[0186] Step 607: The associated UE measures the downlink reference signal sent by the access network device according to the measurement configuration;

[0187] In some embodiments, the associated UE performs measurement of the downlink reference signal of the access network device according to the measurement configuration, that is, the associated UE performs measurement of the downlink reference signal sent by the access network device corresponding to the serving cell according to the measurement configuration, and / or measurement of the downlink reference signal sent by the access network device corresponding to the neighboring cell.

[0188] In some embodiments, the associated UE measures the downlink reference signal of the serving cell and / or neighboring cell in accordance with the measurement configuration. Optionally, the measurement includes measuring at least one indicator of the downlink reference signal, such as Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and Signal-to-Interference-and-Noise Ratio (SINR).

[0189] Figure 9 shows a schematic diagram of a method for executing a perception service provided by an exemplary embodiment of the present application, where access network device a is the access network device corresponding to the serving cell, access network device b and access network device c are the access network devices corresponding to the neighboring cells, and the associated UE measures the downlink reference signal 1 sent by the access network device a corresponding to the serving cell, the downlink reference signal 2 sent by the access network device b corresponding to the neighboring cell, and the downlink reference signal 3 sent by the access network device c corresponding to the neighboring cell according to the measurement configuration.

[0190] Step 608: The associated UE sends the first measurement result to the core network device;

[0191] The first measurement result is a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell.

[0192] In some embodiments, the associated UE obtains a first measurement result after performing downlink reference signal measurement. Optionally, the first measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the downlink reference signal of the serving cell and / or the neighboring cell.

[0193] In some embodiments, based on a reporting configuration in the measurement configuration, the associated UE may send the first measurement result to the core network device. Optionally, the measurement configuration is event-triggered reporting, where the associated UE sends the first measurement result to the core network device when the first measurement result meets a preset condition; or the measurement configuration is periodic reporting, where the associated UE may periodically send the first measurement result to the core network device at periodic time intervals.

[0194] In some embodiments, the associated UE reports a first measurement result to the core network device, including a measurement result of a downlink reference signal of an access network device corresponding to a serving cell, and / or a measurement result of a downlink reference signal of an access network device corresponding to a neighboring cell.

[0195] In some embodiments, the associated UE may report its own measurement results of the downlink reference signal to the access network device. The access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell forwards the measurement results to the core network device. The measurement results may be provided to the core network device as a basis for determining the perceived service continuity.

[0196] Step 609: The core network device decides whether to switch the perception node based on the first measurement result sent by the associated UE.

[0197] In some embodiments, the core network device may switch the sensing node according to the first measurement result of the downlink reference signal of the serving cell and / or the neighboring cell sent by the associated UE.

[0198] In some embodiments, the associated UE measures downlink reference signals of the serving cell and / or neighboring cells according to the measurement configuration and reports a first measurement result to the core network device. Optionally, the first measurement result includes at least one of RSRP, RSRQ, SINR, and other information of the downlink reference signals of the serving cell and / or neighboring cells.

[0199] In some embodiments, the first measurement result includes a measurement result of a downlink reference signal of the serving cell and a measurement result of a downlink reference signal of a neighboring cell. The core network device evaluates the current network status based on the first measurement result and determines whether a sensing node switch is required based on the current network status. For example, if the measurement result of the downlink reference signal of the serving cell is lower than the first condition, and the measurement result of the downlink reference signal of the neighboring cell is higher than the second condition, the core network device switches the sensing node from the access network device corresponding to the serving cell to the access network device corresponding to the neighboring cell.

[0200] In some embodiments, after the core network device decides to switch the sensing node, it sends a switching instruction to the access network device corresponding to the serving cell. This switching instruction notifies the access network device corresponding to the serving cell to switch to the new sensing node. The access network device corresponding to the serving cell executes the switching operation according to the switching instruction, switching the sensing node from the current node to the new node. As shown in Figure 9, the associated UE reports the measurement results of the downlink reference signal 1 of the serving cell and the measurement results of the downlink reference signal 2 and downlink reference signal 3 of the neighboring cell to the core network device. The core network device decides whether to switch the sensing node based on the measurement results. If the measurement result of the downlink reference signal 1 of the serving cell is lower than the first condition and the measurement result of the downlink reference signal 2 of the neighboring cell is higher than the second condition, the core network device switches the sensing node from access network device a to access network device b.

[0201] In summary, the method provided in the embodiments of the present application does not require the associated UE to transmit signals; instead, the associated UE only needs to measure the downlink reference signal transmitted by the access network device. This approach conserves the associated UE's battery power when the sensing target is a battery-powered mobile device. By reducing the frequency with which the associated UE actively transmits signals, the associated UE can more efficiently utilize battery power, extending usage time and improving the associated UE's battery life. Based on the downlink reference signal measured by the associated UE, the core network device can decide whether to switch the sensing node.

[0202] Implementation method 2: Associated UE sends uplink reference signal

[0203] Figure 10 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application, wherein a serving base station provides a serving cell associated with a UE, a neighboring base station provides a neighboring cell associated with a UE, and the AMF and SF are network elements in the core network device responsible for sensing related functions. The method is jointly executed by the core network device, the associated UE, and the access network device, and includes all or part of the following steps:

[0204] Step 701: The core network device receives a sensing request;

[0205] In some embodiments, after receiving a perception request, the core network device initiates a perception session with the access network device, where the perception session is used to implement a perception service for the perception target. The perception request received by the core network device includes at least one of the following information or parameters:

[0206] Perception service type: at least one of intrusion detection, weather monitoring, and UAV identification, used to distinguish the service type information of perception scenario use cases;

[0207] · Sense at least one of the following characteristics of the service: periodicity, aperiodicity, or event triggering;

[0208] QoS requirements for sensing services, such as location accuracy, velocity accuracy, sensing resolution, maximum sensing service latency, refresh rate, confidence level, missed detection rate, false alarm rate, and other indicators;

[0209] Awareness service continuity indication information: The awareness service may explicitly indicate in the awareness request that the awareness service needs to ensure awareness service continuity; or it may be indicated implicitly, for example, by indicating that the awareness service is periodic and has a high refresh rate requirement;

[0210] Sensing target information: indicates that the sensing target is an active sensing target and / or indicates the ID information of the UE associated with the sensing target.

[0211] In some embodiments, the core network device initiates a perception session based on the perception request, implements a perception service for the perception target through the perception session, and further ensures the continuity of the perception service.

[0212] In some embodiments, the perception request may be a request sent by any one of the associated UE, access network device, core network device, and AF.

[0213] Step 702: Associate UE reporting capability information;

[0214] In some embodiments, the core network device includes at least one of an AMF for managing access, mobility and other functions of associated UEs and a SF for session management and control.

[0215] In some embodiments, the associated UE reports capability information to the access network device / or core network device based on a capability information reporting request of the access network device / or core network device. The capability information reporting request includes capability information instructing the associated UE to provide service continuity awareness.

[0216] In some embodiments, the associated UE of the sensing target may report capability information related to sensing service continuity to the access network device and the core network device. The associated UE reporting capability information includes: the associated UE reporting capability information to the access network device and / or the core network device.

[0217] The capability information is used to indicate whether the associated UE supports the capability associated with the first information. For example, the capability information is used to indicate whether the associated UE supports at least one of the measurement capability, generation capability, and reporting capability associated with the first information.

[0218] In some embodiments, the capability information includes an uplink reference signal transmission capability of the associated UE, where the uplink reference signal is a signal sent by the associated UE to an access network device. The transmission capability includes at least one of: whether uplink reference signal transmission is supported, what type of uplink reference signal transmission is supported, a supported transmission frequency range, and a supported maximum transmission power.

[0219] Step 703: The core network device sends a second request to the access network device;

[0220] The second request is used to request configuration of time-frequency resources of an uplink reference signal.

[0221] In some embodiments, the core network device sends a second request to the access network device corresponding to the serving cell.

[0222] In some embodiments, the second request is used to request the access network device corresponding to the serving cell to provide the configuration of time-frequency resources for an uplink reference signal, wherein the uplink reference signal is a reference signal sent by the associated UE to the access network device.

[0223] In some embodiments, the uplink reference signal may be at least one of an uplink sensing reference signal, a sounding reference signal (SRS), a demodulation reference signal (DM-RS), and the like.

[0224] In some embodiments, by sending a second request to the access network device corresponding to the serving cell, the core network device obtains the configuration information of the time-frequency resources of the uplink reference signal, so that the core network device can correctly instruct the associated UE to send the uplink reference signal at the appropriate time-frequency resource position and frequency domain resource position. The core network device can perform at least one of scheduling, optimization, correction and supplementation based on the configuration information of the time-frequency resources, thereby generating a measurement configuration of the uplink reference signal.

[0225] Step 704: The access network device determines the configuration of time-frequency resources of the uplink reference signal;

[0226] Optionally, the access network device refers to the access network device corresponding to the service cell.

[0227] In some embodiments, after receiving the second request sent by the core network device, the access network device corresponding to the serving cell determines the configuration of the time-frequency resources of the uplink reference signal according to the current network status and resource conditions.

[0228] In some embodiments, the access network device corresponding to the serving cell determines the configuration of the time-frequency resources for the uplink reference signal based on the current network status and resource availability, i.e., determines at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location of the uplink reference signal. The access network device corresponding to the serving cell returns the configuration of these time-frequency resources to the core network device along with a second response. In some embodiments, in addition to at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location, the configuration of the time-frequency resources for the uplink reference signal includes at least one of the measurement quantity, measurement period, and reporting configuration of the uplink reference signal.

[0229] Uplink reference signal measurement: Specifies the parameters that need to be measured for the uplink reference signal, such as at least one of RSRP, RSRQ, and SINR, used to evaluate the quality and performance of the associated UE uplink signal;

[0230] Uplink reference signal measurement period: Specifies the time interval at which the access network device performs uplink signal measurements. This determines when the access network device performs measurements and obtains measurement results.

[0231] Uplink reference signal reporting configuration: Specifies the reporting method for measurement results, which can be event-triggered reporting or periodic reporting. Event-triggered reporting triggers reporting when a measurement result meets a preset condition; periodic reporting reports measurement results at fixed time intervals.

[0232] In some embodiments, the access network device corresponding to the serving cell sends the configuration of the time-frequency resources of the uplink reference signal to the core network device, the core network device receives the configuration of the time-frequency resources of the uplink reference signal, and sends the configuration of the time-frequency resources of the uplink reference signal to the associated UE and / or the access network device corresponding to the neighboring cell.

[0233] In some embodiments, the access network device corresponding to the neighboring cell determines to listen to the uplink reference signal at an appropriate time according to the configuration of the time-frequency resources of the uplink reference signal.

[0234] Step 705: Sending uplink reference signal transmission configuration to the associated UE;

[0235] The uplink reference signal is used to send the first information to the core network device after being measured by the access network device corresponding to the serving cell.

[0236] In some embodiments, the core network device sends an uplink reference signal sending configuration to the associated UE through the access network device, so as to guide the associated UE to send the uplink reference signal.

[0237] In some embodiments, the access network device corresponding to the serving cell may send a second request to the access network device, the second request being used to request configuration of time-frequency resources for an uplink reference signal. After the access network device corresponding to the serving cell completes the configuration of the uplink reference signal, the access network device corresponding to the serving cell may send relevant configuration information to the associated UE. Exemplarily, the transmission configuration may include at least one of the time-frequency resource location, frequency domain resource location, transmission period, and uplink reference signal type of the uplink reference signal.

[0238] Step 706: The core network device receives the second response sent by the access network device;

[0239] The second response includes: configuration of time-frequency resources of the uplink reference signal.

[0240] In some embodiments, after the access network device corresponding to the serving cell receives the second request sent by the core network device, the access network device corresponding to the serving cell will send a second response to the core network device.

[0241] Step 707: The core network device sends an activation instruction to the access network device;

[0242] In some embodiments, the activation indication may be referred to as an activation request or an activation indication. The activation indication is used to activate the associated UE to send an uplink reference signal.

[0243] In some embodiments, when the uplink reference signal is configured as a semi-static configuration or a non-periodic configuration, the core network device may request to activate the associated UE to send the uplink reference signal.

[0244] In some embodiments, the core network device generates a sensing activation request and sends it to the access network device corresponding to the serving cell associated with the UE. The activation indication includes relevant information about the activation operation.

[0245] In some embodiments, the core network device sends an activation indication to the access network device corresponding to the serving cell, and the access network device corresponding to the serving cell activates the associated UE to send an uplink reference signal according to the activation indication.

[0246] In some embodiments, after the access network device corresponding to the serving cell receives the activation indication sent by the core network device, it activates the uplink reference signal transmission of the associated UE through MAC CE (MAC Control Element) according to the request of the core network device.

[0247] In some embodiments, after receiving the activation indication forwarded by the access network device corresponding to the serving cell, the associated UE transmits the uplink reference signal according to the time domain resource position in the configuration information of the uplink reference signal.

[0248] In some embodiments, the configuration information of the uplink reference signal includes at least one of time domain resource location, frequency domain resource location, transmission period, etc.

[0249] In some embodiments, the access network device corresponding to the serving cell sends an activation indication confirmation message to the core network device.

[0250] In some embodiments, the access network device corresponding to the serving cell of the associated UE activates uplink reference signal transmission of the associated UE via a MAC CE, and then sends a perception activation request confirmation message to the core network device. The confirmation message is intended to respond to the perception activation request of the core network device and inform the core network device of the execution status of the relevant operation.

[0251] In some embodiments, steps 705 and 706 may be performed after step 707. After the core network device sends an activation indication to the access network device corresponding to the serving cell, the access network device corresponding to the serving cell sends an uplink reference signal transmission configuration to the associated UE. This application does not limit the timing of the steps.

[0252] Step 708: The core network device sends the uplink reference signal measurement configuration to the access network device;

[0253] The uplink reference signal measurement configuration includes all or part of the information for the access network device to perform uplink reference signal measurement.

[0254] In some embodiments, the access network device is an access network device corresponding to a neighboring cell.

[0255] In some embodiments, the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell and the measurement configuration determined by the access network device corresponding to the serving cell are the same measurement configuration, or the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell and the measurement configuration determined by the access network device corresponding to the serving cell are not the same measurement configuration.

[0256] When the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell is not the same as the measurement configuration determined by the access network device corresponding to the serving cell, the core network device needs to send the measurement configuration of the uplink reference signal to the access network device corresponding to the serving cell.

[0257] In some embodiments, an uplink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The access network device receives the uplink reference signal measurement configuration sent by the core network device, where the uplink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the uplink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0258] In some embodiments, a core network device receives a time-frequency resource configuration for an uplink reference signal sent by an access network device corresponding to a serving cell, and determines an uplink reference signal measurement configuration based on the time-frequency resource configuration. In some embodiments, in addition to at least one of a time domain resource location, a frequency domain resource location, and a spatial domain resource location, the uplink reference signal measurement configuration also includes at least one of an uplink reference signal measurement quantity, a measurement period, and a reporting configuration.

[0259] In some embodiments, the measurement configuration of the uplink reference signal may be generated, added, or modified by the core network device according to the configuration of the time-frequency resources. For example, if the configuration of the time-frequency resources reported to the core network device by the access network device corresponding to the serving cell does not include information such as the measurement quantity, measurement period, and reporting configuration of the uplink reference signal, the core network device may generate information such as the measurement quantity, measurement period, and reporting configuration of the uplink reference signal; if the configuration of the time-frequency resources reported to the core network device by the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell includes information such as the measurement quantity, measurement period, and reporting configuration of the downlink reference signal, when generating the measurement configuration, the core network device may select part of the configuration of the time-frequency resources, and then supplement the part of the configuration as the measurement configuration, or, generate the measurement configuration after modifying part of the configuration of the time-frequency resources.

[0260] Step 709: The access network device measures the uplink reference signal sent by the associated UE according to the measurement configuration;

[0261] In some embodiments, the measurement of the uplink reference signal is performed according to the measurement configuration, that is, the access network device corresponding to the serving cell performs the measurement of the uplink reference signal sent by the associated UE according to the measurement configuration, and / or the access network device corresponding to the neighboring cell performs the measurement of the uplink reference signal sent by the associated UE according to the measurement configuration.

[0262] In some embodiments, based on the measurement configuration information, the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell may measure the uplink reference signal on a specified time-frequency resource. Optionally, the measurement may include measuring at least one indicator of the uplink reference signal, such as reference signal received power, reference signal received quality, and signal-to-interference-and-noise ratio.

[0263] In some embodiments, the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell performs measurements according to a measurement period of the measurement configuration, which may be based on a fixed period or based on event triggering.

[0264] Figure 11 shows a schematic diagram of a method for executing a perception service provided by an exemplary embodiment of the present application, where access network device a is the access network device corresponding to the serving cell, access network device b and access network device c are the access network devices corresponding to the neighboring cells, and the associated UE sends an uplink reference signal to the access network device a corresponding to the serving cell and the access network device b and access network device c corresponding to the neighboring cells, and the access network device a corresponding to the serving cell and the access network device b and access network device c corresponding to the neighboring cells measure the uplink reference signal according to the measurement configuration.

[0265] Step 710: The access network device sends the second measurement result to the core network device;

[0266] In some embodiments, the second measurement result is a measurement result of the access network device on the uplink reference signal of the associated UE.

[0267] In some embodiments, the access network device corresponding to the serving cell and the access network device corresponding to the neighboring cell perform measurements to obtain corresponding measurement results. Optionally, the second measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the uplink reference signal of the serving cell and / or the neighboring cell.

[0268] In some embodiments, according to the reporting configuration in the measurement configuration, the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell may send the second measurement result to the core network device.

[0269] In some embodiments, the measurement configuration is event-triggered reporting, and when the second measurement result meets the preset conditions, the access network device immediately sends the second measurement result to the core network device; or, the measurement configuration is periodic reporting, and the access network device periodically sends the second measurement result to the core network device at periodic time intervals.

[0270] Step 711: The core network device decides whether to switch the perception node based on the second measurement result sent by the access network device.

[0271] In some embodiments, the core network device may switch the perception node based on the second measurement result of the uplink reference signal sent by the access network device corresponding to the serving cell and the access network device corresponding to the neighboring cell.

[0272] In some embodiments, an access network device corresponding to a serving cell and / or an access network device corresponding to a neighboring cell performs uplink reference signal measurement according to a measurement configuration and reports a second measurement result to a core network device. Optionally, the second measurement result includes at least one of RSRP, RSRQ, SINR, etc., of a downlink reference signal of the serving cell and / or the neighboring cell.

[0273] In some embodiments, the core network device evaluates the current network state based on the second measurement result and determines whether to switch the sensing node based on the current network state. For example, if the measurement result of the downlink reference signal of the serving cell is lower than the first condition, and the measurement result of the downlink reference signal of the neighboring cell is higher than the second condition, the core network device switches the sensing node from the access network device corresponding to the serving cell to the access network device corresponding to the neighboring cell.

[0274] In some embodiments, after the core network device decides to switch the perception node, it sends a switching instruction to the access network device corresponding to the serving cell. This switching instruction will inform the access network device corresponding to the serving cell to switch to the new perception node. The access network device corresponding to the serving cell will perform the switching operation according to the switching instruction and switch the perception node from the current node to the new node. As shown in Figure 11, the access network device a corresponding to the serving cell and the access network devices b and c corresponding to the neighboring cells report the measurement results to the core network, and the core network device decides whether to switch the perception node based on the measurement results. Cell 1 is the serving cell of the associated UE, and cells 2 and 3 are the neighboring cells of the associated UE. If the measurement result of the uplink reference signal of cell 1 is lower than the first condition, and the measurement result of the uplink reference signal of cell 2 is higher than the second condition, the core network device will switch the perception node from the access network device a corresponding to the serving cell to the access network device b corresponding to the neighboring cell.

[0275] In summary, the method provided in the embodiments of the present application only requires the associated UE to send an uplink reference signal to the access network device. The access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell measures the uplink reference signal sent by the associated UE. This approach saves resources on the air interface. The core network device can decide whether to switch the sensing node based on the uplink reference signal sent by the associated UE.

[0276] Implementation method 3: Associated UE measures downlink reference signal

[0277] Figure 12 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application, wherein a serving base station provides a serving cell associated with a UE, a neighboring base station provides a neighboring cell associated with a UE, and the AMF and SF are network elements in the core network device responsible for sensing related functions. The method is jointly executed by the core network device, the associated UE, and the access network device, and includes all or part of the following steps:

[0278] Step 801: The core network device receives a sensing request;

[0279] In some embodiments, after receiving a perception request, the core network device initiates a perception session with the access network device, where the perception session is used to achieve continuity of the perception service for the perception target. The perception request received by the core network device includes at least one of the following information or parameters:

[0280] Perception service type: at least one of intrusion detection, weather monitoring, and UAV identification, used to distinguish the service type information of perception scenario use cases;

[0281] · Sense at least one of the following characteristics of the service: periodicity, aperiodicity, or event triggering;

[0282] QoS requirements for sensing services, such as at least one of the following indicators: location accuracy, velocity accuracy, sensing resolution, maximum sensing service latency, refresh rate, confidence level, missed detection rate, and false alarm rate;

[0283] Awareness service continuity indication information: The awareness service may explicitly indicate in the awareness request that the awareness service needs to ensure awareness service continuity; or it may be indicated implicitly, for example, by indicating that the awareness service is periodic and has a high refresh rate requirement;

[0284] Awareness target information: indicates whether the awareness target is an active awareness target and / or indicates the ID information of the associated UE of the awareness target.

[0285] In some embodiments, the core network device initiates a perception session based on the perception request, implements a perception service for the perception target through the perception session, and further ensures the continuity of the perception service.

[0286] Step 802: Associate UE reporting capability information;

[0287] In some embodiments, the core network device includes at least one of an AMF for managing access, mobility and other functions of associated UEs and a SF for session management and control.

[0288] In some embodiments, the associated UE reports capability information to the access network device / or core network device based on a capability information reporting request of the access network device / or core network device. The capability information reporting request includes capability information instructing the associated UE to provide service continuity awareness.

[0289] Optionally, the access network device includes a source access network device and a target access network device. Taking the access network device as a base station as an example, the source access device is the base station to which the associated UE is currently connected, and the target access network device is a candidate base station that provides communication services for the associated UE.

[0290] In some embodiments, the associated UE of the sensing target may report capability information related to sensing service continuity to the access network device and the core network device. The associated UE reporting capability information includes: the associated UE reporting capability information to at least one of the source access network device, the target access network device, and the core network device.

[0291] The capability information is used to indicate whether the associated UE supports the capability associated with the first information.

[0292] In some embodiments, the capability information includes the associated UE's measurement capability for downlink reference signals. Specifically, the capability information includes the associated UE's measurement capability for downlink reference signals sent by an access network device corresponding to a current serving cell and the measurement capability for downlink reference signals sent by an access network device corresponding to a neighboring cell. In some embodiments, neighboring cells can be divided into at least one of intra-frequency neighboring cells, inter-frequency neighboring cells, and inter-system neighboring cells. The associated UE's measurement capability for downlink reference signals sent by an access network device corresponding to a neighboring cell includes: at least one of the measurement capability for downlink reference signals sent by intra-frequency neighboring cells, the measurement capability for downlink reference signals sent by inter-frequency neighboring cells, and the measurement capability for downlink reference signals sent by inter-system neighboring cells. Exemplarily, the associated UE's measurement capability for downlink reference signals includes at least one of capability parameters such as whether measurement is supported, whether reporting is supported, which downlink reference signals are supported, whether intra-frequency measurement is possible, whether inter-frequency measurement is possible, whether inter-system measurement is possible, and the shortest switching time for inter-frequency measurement.

[0293] In some embodiments, the capability information includes at least one of a measurement capability and a reporting capability of the associated UE for a downlink reference signal.

[0294] Step 803: The core network device sends a third request to the access network device;

[0295] The third request is used to instruct the source access network device to provide the core network device with the auxiliary information required for the switching perception node.

[0296] In some embodiments, after receiving the third request sent by the core network device, the source access network device will provide the core network device with auxiliary information of the perception node switching.

[0297] In some embodiments, the auxiliary information may include at least one of the following information:

[0298] Handover type: indicates the type of handover, such as sensor node handover;

[0299] Handover target: indicates the target sensing node (target access network device) for handover;

[0300] Switching parameters: Contains the parameters required for switching, such as switching trigger conditions, switching timing, etc.

[0301] Step 804: The access network device determines the configuration of time-frequency resources of the downlink reference signal;

[0302] In some embodiments, the access network determines the configuration of the time-frequency resources of the downlink reference signal, including the source access network device and the target access network device determining the configuration of the time-frequency resources of the downlink reference signal.

[0303] In some embodiments, the downlink reference signal may be at least one of reference signals such as DL Sensing RS, PRS, SSB or CSI-RS.

[0304] In some embodiments, the downlink reference signal is determined by the source access network device and the target access network device respectively. After the source access network device and the target access network device respectively determine the downlink reference signal, the downlink reference signal is used by the associated UE to perform measurements related to perceived service continuity.

[0305] In some embodiments, after the target access network device determines the time-frequency resource configuration of the downlink reference signal, it sends the time-frequency resource configuration to the source access network device, for example, via the Xn interface between the target access network device and the source access network device.

[0306] Step 805: The access network device sends a measurement configuration to the associated UE;

[0307] In some embodiments, the source access network device sends the measurement configurations of the downlink reference signals of the serving cell and the neighboring cells (including the target cell) to the associated UE.

[0308] In some embodiments, after the target access network device determines the time-frequency resource configuration of the downlink reference signal of the neighboring cell, it sends the configuration of the time-frequency resources of the downlink reference signal of the neighboring cell to the source access network device, and the source access network device can generate the measurement configuration of the downlink reference signal of the neighboring cell based on the configuration of the time-frequency resources.

[0309] In some embodiments, the measurement configuration of the downlink reference signal of the neighboring cell may be generated, added, or modified based on the configuration of the time-frequency resources. For example, if the configuration of the time-frequency resources sent by the access network device corresponding to the neighboring cell to the source access network device does not include information such as the measurement amount, measurement period, and reporting configuration of the downlink reference signal, the source access network device may generate information such as the measurement amount, measurement period, and reporting configuration of the downlink reference signal; if the configuration of the time-frequency resources sent by the access network device corresponding to the neighboring cell to the source access network device includes information such as the measurement amount, measurement period, and reporting configuration of the downlink reference signal, the source access network device may select part of the configuration of the time-frequency resources, and then supplement the remaining configuration as the measurement configuration of the neighboring cell, or, modify part of the configuration of the time-frequency resources to generate the measurement configuration of the neighboring cell.

[0310] Optionally, the source access network device may send the measurement configurations of the downlink reference signals of the serving cell and the neighboring cell to the associated UE together, or may send the measurement configurations of the downlink reference signals of the serving cell and the neighboring cell to the associated UE separately in different signalings.

[0311] In some embodiments, the source access network device sends measurement configuration information to the associated UE via RRC signaling.

[0312] In some embodiments, the measurement configuration includes at least one of a measurement object, a reporting configuration, a measurement identifier, a measurement interval, and the like.

[0313] Step 806: The access network device sends a downlink reference signal request response message to the core network device;

[0314] In some embodiments, the source access network device sends a downlink reference signal request response message to the core network device to coordinate and interact with the core network device to ensure the normal operation of the sensing service.

[0315] Step 807: The associated UE performs measurement of the downlink reference signal of the access network device according to the measurement configuration;

[0316] In some embodiments, the associated UE performs downlink reference signal measurements of the access network device according to the measurement configuration. Specifically, the associated UE performs downlink reference signal measurements of the serving cell and / or neighboring cells according to the measurement configuration information. The associated UE measures the downlink reference signal of the connected serving cell to assess the signal quality and strength of the serving cell. The associated UE also measures the downlink reference signal of the neighboring cell to obtain signal quality and strength information of the neighboring cell.

[0317] FIG13 is a schematic diagram illustrating a method for executing a sensing service according to an exemplary embodiment of the present application. Access network device a is the access network device corresponding to the serving cell, and access network devices b and c are the access network devices corresponding to neighboring cells. An associated UE measures, according to a measurement configuration, downlink reference signal 1 transmitted by the access network device corresponding to the serving cell, and downlink reference signal 2 and downlink reference signal 3 transmitted by the access network devices corresponding to the neighboring cells. The associated UE reports the measurement results of downlink reference signal 1, downlink reference signal 2, and downlink reference signal 3 to access network device a corresponding to the serving cell.

[0318] Step 808: The associated UE reports the measurement result of the downlink reference signal to the access network device;

[0319] In some embodiments, the associated UE reports the measurement results of the downlink reference signals of the serving cell and / or the neighboring cell to the source access network device. These measurement results may include at least one of RSRP, RSRQ, SINR, etc. of the downlink reference signals of the serving cell and / or the neighboring cell.

[0320] Step 809: The access network device switches according to the measurement result;

[0321] In some embodiments, the source access network device is switched to the target access network device based on the measurement result.

[0322] In some embodiments, the associated UE reports the measurement results of the downlink reference signal to the source access network device. The source access network device analyzes the measurement results reported by the associated UE, including at least one of the RSRP, RSRQ, SINR and other information of the downlink reference signal of the neighboring cell, and at least one of the RSRP, RSRQ, SINR and other information of the downlink reference signal of the current serving cell. The measurement results can be used to evaluate the performance of the current serving cell and the availability of the neighboring cell.

[0323] In some embodiments, the source access network device determines whether a handover is required and which target access network device to handover to based on an analysis of the measurement results and a preset handover strategy. Optionally, the preset handover strategy can be based on different indicators, such as at least one of RSRP, RSRQ, and SINR of a downlink reference signal.

[0324] Step 810: The source access network device sends a handover request;

[0325] In some embodiments, the source access network device decides to switch to the target access network device, and the source access network device sends a switching request to the target access network device through the Xn interface.

[0326] As shown in Figure 13, after access network device a corresponding to the serving cell receives the measurement results of downlink reference signal 1, downlink reference signal 2, and downlink reference signal 3 reported by the associated UE, if the measurement result of downlink reference signal 1 of the serving cell is lower than the first condition and the measurement result of downlink reference signal 2 of the neighboring cell is higher than the second condition, access network device a corresponding to the serving cell decides to hand over the associated UE to access network device b corresponding to the neighboring cell. At this time, access network device a corresponding to the serving cell sends a handover request to access network device b corresponding to the neighboring cell via the Xn interface. Access network device a corresponding to the serving cell will pre-send first handover indication information to the core network device to inform the core network device that a cell handover has occurred for the associated UE.

[0327] Step 811: The target access network device performs access control;

[0328] In some embodiments, after receiving the handover request sent by the source access network device, the target access network device performs access control and provides a new RRC configuration for the associated UE.

[0329] In some embodiments, the target access network device provides the associated UE with a new RRC configuration as part of the handover request confirmation message, that is, the target access network device forwards the new RRC configuration to the associated UE through the source access network device.

[0330] Step 812: The target access network device sends a handover request confirmation to the source access network device;

[0331] In some embodiments, after receiving the handover request sent by the source access network device, the target access network device sends a confirmation message of the handover request to the source access network device.

[0332] Step 813: The source access network device provides RRC configuration for the associated UE;

[0333] In some embodiments, the source access network device receives a handover request confirmation message from the target access network device. The handover request confirmation message includes a new RRC configuration provided by the target access network device for the associated UE. The source access network device forwards this RRC configuration to the associated UE so that the associated UE can update its own RRC configuration.

[0334] Optionally, the new RRC configuration may include at least one of the following configurations:

[0335] Frequency and channel configuration: The target access network device specifies the frequency and channel resources that the associated UE needs to use for communication. This includes at least one of the following information: downlink frequency, uplink frequency, and physical channel type.

[0336] Power control configuration: The target access network equipment configures the power control parameters of the associated UE to ensure that the power level is maintained during the communication after the handover.

[0337] Step 814: The source access network device sends first handover instruction information to the core network device;

[0338] The first switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0339] In an optional example, the first switching indication information includes at least one of the following information:

[0340] UE identity of the associated UE;

[0341] The cell ID of the target cell;

[0342] The session identifier of the awareness session associated with the associated UE.

[0343] In some embodiments, the first switching indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier (UE Application Layer ID) of the associated UE, a SUPI (Subscription Permanent Identifier), a SUCI (Subscription Concealed Identifier), and a 5G-GUTI (5G Globally Unique Temporary Identifier). Through the UE identifier of the associated UE, the core network device can identify the associated UE and perform corresponding processing.

[0344] In some embodiments, the first handover indication information includes a cell identifier of a target cell. The cell identifier of the target cell is identification information indicating the target cell to which the associated UE is to be handed over. The cell identifier of the target cell may be at least one of a CGI (Cell Global Identity), a PCI (Physical Layer Identity), etc. Through the target cell identifier, the core network device can know which cell the associated UE is about to hand over to, and make corresponding handover decisions and configuration updates.

[0345] In some embodiments, the first switching indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a Sensing Session ID. Through the session identifier of the perception session, the core network device can associate the switching indication with the perception service and perform corresponding processing.

[0346] In some embodiments, the source access network device sends a first switching indication message to the core network device, notifying the core network device that a cell switching has occurred for the associated UE, and the associated UE switches from the source cell to the target cell (i.e., the serving cell switches to the neighboring cell). The core network device receives the first switching indication message sent by the source access network device. The first switching indication message assists the core network device in making perception node switching decisions and ensures the smooth progress of the switching process.

[0347] Step 815: The associated UE switches the RRC connection to the target access network device;

[0348] In some embodiments, the associated UE connects the RRC to the target access network device for handover and communicates with the target access network device.

[0349] Step 816: The associated UE sends an RRC configuration completion message to the target access network device;

[0350] In some embodiments, when the associated UE switches to the target access network device and completes the RRC connection reconfiguration, the associated UE will send an RRC configuration completion message to the target access network device. The RRC configuration completion message is a signal from the associated UE to the target access network device confirming the completion of the RRC reconfiguration.

[0351] In some embodiments, the RRC configuration completion information confirms that the new RRC connection has been established and can be used normally, which can help the target access network device confirm whether the associated UE has successfully switched to the target cell and is ready to communicate in the target cell.

[0352] Step 817: The target access network device sends second handover instruction information to the core network device;

[0353] The second switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0354] In an optional example, the second switching indication information includes at least one of the following information:

[0355] UE identity of the associated UE;

[0356] The cell ID of the source cell;

[0357] The session identifier of the awareness session associated with the associated UE.

[0358] In some embodiments, the second handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the core network device can identify the associated UE and perform corresponding processing.

[0359] In some embodiments, the second handover indication information includes a cell identifier of a source cell, where the cell identifier of the source cell is identification information indicating the source cell before the associated UE is handed over, and the cell identifier of the source cell may be at least one of a CGI, a PCI, etc. The core network device may use the cell identifier of the source cell to determine the cell before the handover and perform a configuration update on the serving cell after the handover.

[0360] In some embodiments, the second handover indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a Sensing Session ID. Through the session identifier of the perception session, the core network device can associate the handover indication with the perception service and perform corresponding processing.

[0361] In some embodiments, the target access network device sends a second switching indication message to the core network device, notifying the core network device that a cell switching has occurred for the associated UE, and the associated UE switches from the source cell to the target cell (i.e., the serving cell switches to the neighboring cell). The core network device receives the second switching indication message sent by the target access network device. The second switching indication message assists the core network device in making perception node switching decisions and ensures the smooth progress of the switching process.

[0362] Step 818: The core network device switches the perception node based on the switching indication information.

[0363] In some embodiments, the core network device may switch the perception node according to the first switching indication information sent by the source access network device and the second switching indication information sent by the target access network device.

[0364] In some embodiments, the first handover indication information includes at least one of a UE identifier of the associated UE, a cell identifier of the target cell, and a session identifier of a perception session associated with the associated UE. The second handover indication information includes at least one of a UE identifier of the associated UE, a cell identifier of the source cell, and a session identifier of a perception session associated with the associated UE.

[0365] In some embodiments, the core network device makes a handover decision based on the first handover indication information and the second handover indication information. Optionally, the core network device can coordinate the handover of the sensing node and switch the sensing node from the current node (source access network device) to the new node (target access network device), thereby optimizing the execution of the sensing service. As shown in Figure 13, cell 1 is the service cell of the associated UE, and cell 2 is the neighboring cell of the associated UE. The access network device a corresponding to the service cell switches the associated UE to the access network device b corresponding to the neighboring cell based on the measurement results of downlink reference signal 1, downlink reference signal 2, and downlink reference signal 3. The access network device a corresponding to the service cell sends the first handover indication information to the core network device. After the service cell of the associated UE is successfully switched from cell 1 to cell 2, the access network device b corresponding to the neighboring cell sends the second handover indication information to the core network device. The core network device switches the sensing node from the access network device a corresponding to the service cell to the access network device b corresponding to the neighboring cell based on the first handover indication information and the second handover indication information.

[0366] It should be noted that, in one possible implementation, the steps shown in Figure 8 can be combined with the steps shown in Figure 10 to form a new embodiment, or, the steps shown in Figure 8 can be combined with the steps shown in Figure 12 to form a new embodiment, or, the steps shown in Figure 10 can be combined with the steps shown in Figure 12 to form a new embodiment, or, the steps shown in Figure 8 can be combined with the steps shown in Figure 10 and the steps shown in Figure 12 to form a new embodiment, which will not be repeated here.

[0367] In summary, the method provided in the embodiments of the present application enables an access network device to report measurement results reported by an associated UE to a core network device. The core network device then switches the sensing node based on the indication of a cell handover event, eliminating the need to transmit large amounts of data and effectively saving air interface resources. Compared to transmitting large amounts of data, cell handover events involving a small number of bits have a faster transmission speed and higher success rate, allowing the core network device to be notified of the handover in a timely manner, thereby ensuring the continuity and real-time nature of sensing services.

[0368] In some embodiments, the access network device determines whether to switch the perception node based on the first information sent by the associated UE or terminal device. The first information indicates information related to the mobility of the associated UE, assisting the access network device in deciding the switching of the perception service between different perception nodes. The reporting method of the first information includes but is not limited to at least one of the following two implementation methods (the order does not represent the advantages and disadvantages of the implementation methods):

[0369] Implementation method 1: Associated UE measures sidelink reference signal;

[0370] Implementation method 2: The associated UE sends a sidelink reference signal.

[0371] It should be noted that, in the embodiments of the present application, perception can be equivalent to or replaced by at least one of the following: positioning, ranging, speed measurement, angle measurement, target imaging, target detection, target tracking, and target recognition.

[0372] The following describes these two implementation methods respectively:

[0373] Implementation method 1: Associated UE measures sidelink reference signal

[0374] FIG14 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application. The method is jointly executed by an access network device, a terminal device, and an associated UE. The method includes all or part of the following steps:

[0375] Step 901: The access network device receives a sensing request;

[0376] In some embodiments, after receiving a perception request, the access network device initiates a perception session with the terminal device, where the perception session is used to implement a perception service for a perception target. The perception request received by the access network device includes at least one of the following information or parameters:

[0377] Perception service type: at least one of intrusion detection, weather monitoring, and UAV identification, used to distinguish the service type information of perception scenario use cases;

[0378] · Sense at least one of the following characteristics of the service: periodicity, aperiodicity, or event triggering;

[0379] QoS requirements for sensing services, such as at least one of the following indicators: location accuracy, velocity accuracy, sensing resolution, maximum sensing service latency, refresh rate, confidence level, missed detection rate, and false alarm rate;

[0380] Awareness service continuity indication information: The awareness service may explicitly indicate in the awareness request that the awareness service needs to ensure awareness service continuity; or it may be indicated implicitly, for example, by indicating that the awareness service is periodic and has a high refresh rate requirement;

[0381] Sensing target information: indicates that the sensing target is an active sensing target and / or indicates the ID information of the UE associated with the sensing target.

[0382] In some embodiments, the core network device initiates a perception session based on the perception request, implements a perception service for the perception target through the perception session, and further ensures the continuity of the perception service.

[0383] In some embodiments, the perception request may be a request sent by any one of the associated UE, access network device, and terminal device.

[0384] Step 902: Associate UE reporting capability information;

[0385] In some embodiments, the associated UE reports capability information to the access network device / or terminal device based on a capability information reporting request of the access network device / or terminal device. The capability information reporting request includes capability information instructing the associated UE to provide service continuity awareness.

[0386] In some embodiments, the associated UE of the sensing target may report capability information related to sensing service continuity to the access network device and the terminal device. The associated UE reporting capability information includes: the associated UE reporting capability information to the access network device and / or the terminal device.

[0387] The capability information is used to indicate whether the associated UE supports the capability associated with the first information. For example, the capability information is used to indicate whether the associated UE supports at least one of the measurement capability, generation capability, and reporting capability associated with the first information.

[0388] In some embodiments, the capability information includes the associated UE's capability to measure a sidelink reference signal. Optionally, the capability information includes the associated UE's capability to measure a sidelink reference signal sent by the terminal device.

[0389] In some embodiments, the measurement capability of the associated UE for the sidelink reference signal includes at least one of capability parameters such as whether measurement is supported, whether reporting is supported, which sidelink reference signal is supported, and the like.

[0390] In some embodiments, the capability information includes at least one of a measurement capability and a reporting capability of the associated UE for a sidelink reference signal.

[0391] Step 903: The access network device determines the configuration of time-frequency resources of the sidelink reference signal;

[0392] The sidelink reference signal is a reference signal used to measure the channel state between a terminal device and an associated UE. In some embodiments, the sidelink reference signal can be at least one of a demodulation reference signal, a phase tracking reference signal (PT-RS), a CSI-RS, and other reference signals.

[0393] In some embodiments, after receiving the perception request sent by the terminal device, the access network device determines the configuration of the time and frequency resources of the side reference signal based on the current network status and wireless resource conditions.

[0394] In some embodiments, the access network device determines the configuration of time-frequency resources for the sidelink reference signal based on the current network status and resource availability, i.e., determines at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location of the sidelink reference signal. Optionally, the time-frequency resource configuration also includes reporting configuration.

[0395] In some embodiments, in addition to at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location, the configuration of the time and frequency resources of the sidelink reference signal also includes at least one of the measurement quantity, measurement period, and reporting configuration of the sidelink reference signal.

[0396] Sidelink reference signal measurement quantity: used to specify the parameters to be measured, such as at least one of the subcarrier spacing and waveform;

[0397] Sidelink reference signal measurement period: specifies the time interval for the associated UE to measure and provide feedback on the sidelink reference signal;

[0398] Sidelink reference signal reporting configuration: Determines how measurement results are reported, including event-triggered and periodic reporting. Event-triggered reporting triggers reporting when a measurement result meets a preset condition, while periodic reporting reports measurement results at fixed intervals.

[0399] Step 904: The access network device provides the associated UE with a measurement configuration of a sidelink reference signal;

[0400] The sidelink reference signal measurement configuration is a measurement configuration of the sidelink reference signal associated with the UE and the terminal device.

[0401] In some embodiments, the access network device provides the associated UE with a measurement configuration of a sidelink reference signal, including the access network device providing the associated UE with a measurement configuration of a terminal device that transmits a sidelink reference signal with the associated UE.

[0402] In some embodiments, a sidelink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The sidelink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the sidelink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0403] In some embodiments, the measurement configuration of the sidelink reference signal includes at least one of the measurement amount, measurement period, and reporting configuration of the sidelink reference signal in addition to at least one of the time domain resource position, frequency domain resource position, and spatial domain resource position.

[0404] In some embodiments, the measurement configuration of the sidelink reference signal may be generated, added, or modified by the access network device based on the configuration of the time-frequency resources. When generating the measurement configuration, the access network device may directly use the configuration of the time-frequency resources as the measurement configuration, or may select a portion of the configuration of the time-frequency resources and add it to the measurement configuration before supplementing the remaining configuration, or may modify a portion of the configuration of the time-frequency resources and then generate the measurement configuration, etc., without limitation.

[0405] Step 905: The associated UE performs measurement of the sidelink reference signal of the terminal device according to the measurement configuration;

[0406] In some embodiments, the associated UE performs measurement of the sidelink reference signal of the terminal device according to the measurement configuration received from the access network device.

[0407] In some embodiments, the associated UE performs sidelink reference signal measurement according to a measurement configuration. The associated UE monitors and measures the sidelink reference signal at a time domain resource location and a frequency domain resource location in the measurement configuration. Optionally, the measurement includes measuring at least one of the following indicators: a frequency band, a subcarrier spacing, a waveform, etc., of the sidelink reference signal.

[0408] Figure 15 shows a schematic diagram of a method for executing a perception service provided by an exemplary embodiment of the present application, where terminal device 1, terminal device 2, and terminal device 3 conduct a perception session with the associated UE, and the associated UE measures the sidelink reference signal 1 between terminal device 1, the sidelink reference signal 2 between terminal device 2, and the sidelink reference signal 3 between terminal device 3 according to the measurement configuration.

[0409] Step 906: The associated UE sends the first measurement result to the access network device;

[0410] The first measurement result is a measurement result of a sidelink reference signal between the associated UE and the terminal device.

[0411] In some embodiments, the associated UE obtains a first measurement result after performing a sidelink reference signal measurement. Optionally, the first measurement result may include at least one of a frequency band, a subcarrier spacing, a waveform, etc. of the sidelink reference signal.

[0412] Optionally, when reporting the first measurement result to the access network device, the associated UE may choose to report its location information to the access network device in advance, report its location information to the access network device in real time, or periodically report its location information to the access network device. Optionally, the access network device may perform resource scheduling and optimization based on the location information of the associated UE. For example, based on the location of the associated UE, the access network device may select an optimal base station to connect to the associated UE, adjust power allocation, and provide better signal coverage and service quality for the associated UE.

[0413] In some embodiments, based on the reporting configuration in the measurement configuration, the associated UE may send the first measurement result to the access network device. Optionally, the measurement configuration may be event-triggered reporting, where the associated UE sends the first measurement result to the access network device when the first measurement result meets a preset condition. Alternatively, the measurement configuration may be periodic reporting, where the associated UE may periodically send the first measurement result to the access network device at periodic intervals. The first measurement result may be provided to the access network device as a basis for determining perceived service continuity.

[0414] In some embodiments, when the associated UE is within the coverage of the access network device, the associated UE may report the first measurement result directly to the access network device. In some embodiments, when the associated UE is not within the coverage of the access network device, the terminal device may be used as a relay device to forward the first measurement result to the access network device via the relay device.

[0415] Step 907: The access network device decides whether to switch the sensing node based on the first measurement result sent by the associated UE.

[0416] In some embodiments, the access network device may switch the sensing node according to a first measurement result of a sidelink reference signal sent by an associated UE.

[0417] In some embodiments, the access network device evaluates the current network state based on the first measurement result and determines whether to switch the sensing node based on the current network state. For example, if the measurement result of the sidelink reference signal of the first terminal device is lower than a first condition, and the measurement result of the sidelink reference signal of the second terminal device is higher than a second condition, the access network device switches the sensing node from the first terminal device to the second terminal device.

[0418] As shown in Figure 15, the associated UE reports the measurement results of the sidelink reference signal 1 between it and the terminal device 1, the sidelink reference signal 2 between it and the terminal device 2, and the sidelink reference signal 3 between it and the terminal device 3 to the access network device. The access network device decides whether to switch the perception node based on the measurement results. If the measurement result of the sidelink reference signal 1 is lower than the first condition and the measurement result of the sidelink reference signal 2 is higher than the second condition, the core network device will switch the perception node from terminal device 1 to terminal device 2.

[0419] In summary, the method provided in the embodiment of the present application does not require the associated UE to send a signal. The associated UE only needs to measure the sidelink reference signal between the associated UE and the terminal device. When the sensing target is a battery-powered mobile device, this method saves the power of the associated UE. By reducing the frequency with which the associated UE actively sends signals, the associated UE can more effectively utilize battery power, extend the usage time, and improve the battery life of the associated UE. The access network device can decide whether to switch the sensing node based on the sidelink reference signal measured by the associated UE.

[0420] Implementation method 2: Associated UE sends sidelink reference signal

[0421] FIG16 shows a flowchart of a method for executing a sensing service provided by an exemplary embodiment of the present application. The method is jointly executed by an access network device, a terminal device, and an associated UE. The method includes all or part of the following steps:

[0422] Step 1001: The access network device receives a sensing request;

[0423] In some embodiments, after receiving a perception request, the access network device initiates a perception session with the terminal device, where the perception session is used to implement a perception service for a perception target. The perception request received by the access network device includes at least one of the following information or parameters:

[0424] Perception service type: at least one of intrusion detection, weather monitoring, and UAV identification, used to distinguish the service type information of perception scenario use cases;

[0425] · Sense at least one of the following characteristics of the service: periodicity, aperiodicity, or event triggering;

[0426] QoS requirements for sensing services, such as at least one of the following indicators: location accuracy, velocity accuracy, sensing resolution, maximum sensing service latency, refresh rate, confidence level, missed detection rate, and false alarm rate;

[0427] Awareness service continuity indication information: The awareness service may explicitly indicate in the awareness request that the awareness service needs to ensure awareness service continuity; or it may be indicated implicitly, for example, by indicating that the awareness service is periodic and has a high refresh rate requirement;

[0428] Sensing target information: indicates that the sensing target is an active sensing target and / or indicates the ID information of the UE associated with the sensing target.

[0429] In some embodiments, the core network device initiates a perception session based on the perception request, implements a perception service for the perception target through the perception session, and further ensures the continuity of the perception service.

[0430] In some embodiments, the perception request may be a request sent by any one of the associated UE, access network device, and terminal device.

[0431] Step 1002: Associate UE reporting capability information;

[0432] In some embodiments, the associated UE reports capability information to the access network device / or terminal device based on a capability information reporting request of the access network device / or terminal device. The capability information reporting request includes capability information instructing the associated UE to provide service continuity awareness.

[0433] In some embodiments, the associated UE of the sensing target may report capability information related to sensing service continuity to the access network device and the terminal device. The associated UE reporting capability information includes: the associated UE reporting capability information to the access network device and / or the terminal device.

[0434] The capability information is used to indicate whether the associated UE supports the capability associated with the first information. For example, the capability information is used to indicate whether the associated UE supports at least one of the measurement capability, generation capability, and reporting capability associated with the first information.

[0435] In some embodiments, the capability information includes the associated UE's ability to transmit a sidelink reference signal. Optionally, the capability information includes the associated UE's ability to transmit a sidelink reference signal to a terminal device. The transmission capability includes at least one of: whether the transmission of a sidelink reference signal is supported, what type of sidelink reference signal is supported for transmission, a frequency range for supported transmission, and a maximum supported transmission power.

[0436] Step 1003: The access network device determines the configuration of time-frequency resources of the sidelink reference signal;

[0437] The sidelink reference signal is a reference signal used to measure the channel state between the terminal device and the associated UE. In some embodiments, the sidelink reference signal can be at least one of a demodulation reference signal, a PT-RS, a CSI-RS, and other reference signals.

[0438] In some embodiments, after receiving the perception request sent by the terminal device, the access network device determines the configuration of the time and frequency resources of the side reference signal based on the current network status and wireless resource conditions.

[0439] In some embodiments, the access network device determines the configuration of time-frequency resources for the sidelink reference signal based on the current network status and resource availability, i.e., determines at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location of the sidelink reference signal. Optionally, the time-frequency resource configuration also includes reporting configuration.

[0440] In some embodiments, in addition to at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location, the configuration of the time and frequency resources of the sidelink reference signal also includes at least one of the measurement quantity, measurement period, and reporting configuration of the sidelink reference signal.

[0441] Sidelink reference signal measurement quantity: used to specify the parameters to be measured, such as at least one of the subcarrier spacing and waveform;

[0442] Sidelink reference signal measurement period: specifies the time interval for the terminal device to measure and feedback the sidelink reference signal;

[0443] Sidelink reference signal reporting configuration: Determines how measurement results are reported, including event-triggered and periodic reporting. Event-triggered reporting triggers reporting when a measurement result meets a preset condition, while periodic reporting reports measurement results at fixed intervals.

[0444] Step 1004: The access network device provides the terminal device with a measurement configuration of a sidelink reference signal;

[0445] The sidelink reference signal measurement configuration is a measurement configuration of the sidelink reference signal associated with the UE and the terminal device.

[0446] In some embodiments, the access network device provides a measurement configuration of a sidelink reference signal to the terminal device, including the access network device providing a measurement configuration for sidelink reference signal transmission with an associated UE to the terminal device.

[0447] In some embodiments, a sidelink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The sidelink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the sidelink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0448] In some embodiments, the measurement configuration of the sidelink reference signal includes at least one of the measurement amount, measurement period, and reporting configuration of the sidelink reference signal in addition to at least one of the time domain resource position, frequency domain resource position, and spatial domain resource position.

[0449] In some embodiments, the measurement configuration of the sidelink reference signal may be generated, added, or modified by the access network device based on the configuration of the time-frequency resources. When generating the measurement configuration, the access network device may directly use the configuration of the time-frequency resources as the measurement configuration, or may select a portion of the configuration of the time-frequency resources and add it to the measurement configuration before supplementing the remaining configuration, or may modify a portion of the configuration of the time-frequency resources and then generate the measurement configuration, etc., without limitation.

[0450] Step 1005: The terminal device performs measurement of a sidelink reference signal associated with the UE according to the measurement configuration;

[0451] In some embodiments, the terminal device performs measurement of a sidelink reference signal associated with the UE according to a measurement configuration received from the access network device.

[0452] In some embodiments, a terminal device performs sidelink reference signal measurement according to a measurement configuration. The terminal device monitors and measures the sidelink reference signal at a time domain resource location and a frequency domain resource location according to the measurement configuration. Optionally, the measurement includes measuring at least one of the following indicators: a frequency band, a subcarrier spacing, a waveform, etc., of the sidelink reference signal.

[0453] Figure 17 shows a schematic diagram of a method for executing a perception service provided by an exemplary embodiment of the present application, where terminal device 1, terminal device 2 and terminal device 3 conduct a perception session with the associated UE, and terminal device 1, terminal device 2 and terminal device 3 respectively measure the side reference signal between themselves and the associated UE.

[0454] Step 1006: The terminal device sends the second measurement result to the access network device;

[0455] The second measurement result is a measurement result of a sidelink reference signal between the associated UE and the terminal device.

[0456] In some embodiments, after the terminal device performs measurement of the sidelink reference signal, it obtains a second measurement result. Optionally, the second measurement result may include at least one of a frequency band, a subcarrier spacing, a waveform, etc. of the sidelink reference signal.

[0457] Optionally, when reporting the second measurement result to the access network device, the terminal device may choose to report its location information to the access network device in advance, in real time, or periodically. Optionally, the access network device may perform resource scheduling and optimization based on the location information of the terminal device. For example, based on the location of the terminal device, the access network device may select an optimal base station for connection to the terminal device and adjust power allocation to provide better signal coverage and service quality for the terminal device.

[0458] In some embodiments, based on the reporting configuration in the measurement configuration, the terminal device may send the second measurement result to the access network device. Optionally, the measurement configuration may be event-triggered reporting, where the terminal device sends the second measurement result to the access network device when the second measurement result meets a preset condition. Alternatively, the measurement configuration may be periodic reporting, where the terminal device may periodically send the second measurement result to the access network device at periodic intervals. The second measurement result may be provided to the access network device as a basis for determining perceived service continuity.

[0459] Step 1007: The access network device decides whether to switch the perception node based on the second measurement result sent by the terminal device.

[0460] In some embodiments, the access network device may switch the sensing node based on the second measurement result of the sidelink reference signal sent by the terminal device.

[0461] In some embodiments, the access network device evaluates the current network state based on the second measurement result and determines whether to switch the sensing node based on the current network state. For example, if the sidelink reference signal measurement result of the first terminal device is lower than the first condition, and the sidelink reference signal measurement result of the second terminal device is higher than the second condition, the access network device switches the sensing node from the first terminal device to the second terminal device.

[0462] As shown in Figure 17, terminal device 1 reports the measurement results of the sidelink reference signal between itself and the associated UE to the access network device, terminal device 2 reports the measurement results of the sidelink reference signal between itself and the associated UE to the access network device, and terminal device 3 reports the measurement results of the sidelink reference signal between itself and the associated UE to the access network device. The access network device decides whether to switch the perception node based on the measurement results. If the measurement result of terminal device 1 is lower than the first condition and the measurement result of terminal device 2 is higher than the second condition, the core network device switches the perception node from terminal device 1 to terminal device 2.

[0463] In summary, the method provided in the embodiments of the present application only requires the associated UE to initiate sidelink reference signal transmission to the terminal device, the first terminal device to measure the sidelink reference signal initiated by the associated UE, and the second terminal device to measure the sidelink reference signal initiated by the associated UE. This approach saves resources on the air interface. The access network device can decide whether to switch the sensing node based on the measurement results of the sidelink reference signal sent by the terminal device.

[0464] On the first communication node side:

[0465] FIG18 is a flow chart of a method for executing a sensing service provided by an exemplary embodiment of the present application. Taking the method executed by the first communication node as an example, the method includes at least some of the following steps:

[0466] Step 210: Receive first information sent by the associated UE or the second communication node;

[0467] The first information is used to assist the first communication node in determining the switching of the sensing node. The first information is reference information used to assist the first communication node in deciding whether the sensing node for the sensing target needs to be switched. The communication range of the second communication node intersects with the communication range of the associated UE.

[0468] In some embodiments, the first information includes mobility information about the perception target. The associated UE is a UE corresponding to the perception target. The associated UE can be the perception target itself, such as a vehicle-mounted terminal accessing a communication network. The associated UE can also be a UE used by the perception target, such as a mobile phone used by the person if the perception target is a person.

[0469] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first information is information sent by the associated UE to the core network device, or information sent by the access network device to the core network device. The access network device is associated with the serving cell and / or neighboring cell of the associated UE. In a cell handover scenario, the serving cell of the associated UE includes at least one of a source serving cell and a target serving cell.

[0470] In some embodiments, the first information includes the measurement results of the downlink reference signal of the serving cell and / or the neighboring cell, that is, the measurement results of the downlink reference signal of the serving cell and / or the neighboring cell by the associated UE. In some embodiments, the first information includes the measurement results of the uplink reference signal of the associated UE, that is, the measurement results of the uplink reference signal of the associated UE by the access network equipment of the serving cell and / or the neighboring cell. In some embodiments, the first information includes a cell switching event. The cell switching event is used to indicate relevant information of the cell switching process of the associated UE. The cell switching event is reported by the access network equipment corresponding to the source serving cell and / or the target serving cell.

[0471] In some embodiments, the first information includes at least one of a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell, a measurement result of an uplink reference signal of an associated UE, and a cell switching event.

[0472] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first information is information sent by the associated UE to the access network device, or information sent by the terminal device to the access network device. The first information includes a measurement result of a sidelink reference signal. The first information includes the measurement result of the sidelink reference signal of the associated UE and / or the measurement result of the sidelink reference signal of the terminal device.

[0473] Step 220: Determine the switching of the sensing node based on the first information.

[0474] The first communication node determines or decides whether to switch the perception node based on the first information. The perception node is used to perform a perception service on a perception target corresponding to the associated UE.

[0475] In some embodiments, a sensing node refers to a node for performing a sensing service, and the sensing node senses a sensing target corresponding to an associated UE. For example, the sensing service may be measuring the position of the sensing target within a cell covered by an access network device.

[0476] The perception target can be an object, area or event that needs to be perceived or monitored.

[0477] In some embodiments, the sensing target is a terminal device that can establish a communication connection with the access network device and has a signal transmission capability or a signal reception capability. Optionally, in some embodiments, the sensing target can establish a communication connection with the access network device by means of an associated UE.

[0478] In some embodiments, the access network device provides access services for the associated UE. Taking the access network device as a base station as an example, the access network device includes a serving base station (source base station) and / or a neighboring base station (candidate base station), and the coverage area of ​​the access network device includes the serving cell and / or the neighboring cell.

[0479] In some embodiments, the location of the sensing target is determined based on the sensing signal. The sensing target may be in a state of constant movement in a cell covered by the access network device, so the core network device needs to switch the sensing node, that is, switch the access network device.

[0480] In some embodiments, the first communication node determines whether to switch the perception node based on the first information sent by the associated UE or the second communication node, and indicates information related to the mobility of the associated UE through the first information to assist the first communication node in deciding the switching of the perception service between different perception nodes. The reporting method of the first information includes but is not limited to at least one of the following three implementation methods (the order does not represent the advantages and disadvantages of the implementation methods):

[0481] Implementation method 1: the associated UE measures the first reference signal;

[0482] Implementation method 2: the associated UE sends a second reference signal;

[0483] Implementation method three: the associated UE measures the first reference signal (where the first communication node is a core network device and the second communication node is an access network device).

[0484] It should be noted that, in the embodiments of the present application, perception can be equivalent to or replaced by at least one of the following: positioning, ranging, speed measurement, angle measurement, target imaging, target detection, target tracking, and target recognition.

[0485] For implementation method one

[0486] In some embodiments, the first communication node receives a first measurement result sent by an associated UE.

[0487] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first measurement result is a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell.

[0488] In some embodiments, after performing the measurement, the associated UE obtains corresponding measurement results. Optionally, the first measurement result may include at least one of RSRP, RSRQ, SINR, etc., of the downlink reference signal of the serving cell and / or the neighboring cell. Based on the measurement results, the associated UE can obtain information about the downlink reference signal of the serving cell and / or the neighboring cell.

[0489] In some embodiments, based on the reporting configuration in the measurement configuration, the associated UE may send the first measurement result to the core network device, and the core network device may receive the first measurement result sent by the associated UE. Optionally, the measurement configuration is event-triggered reporting, and when the first measurement result meets a preset condition, the associated UE sends the first measurement result to the core network device; or the measurement configuration is periodic reporting, and the associated UE may periodically send the first measurement result to the core network device at periodic time intervals.

[0490] The associated UE can report its downlink reference signal measurement results to the access network device. The access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell forwards the measurement results to the core network device. The measurement results can be provided to the core network device as a basis for determining the perceived service continuity.

[0491] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first measurement result is a measurement result of a sidelink reference signal between the associated UE and the terminal device. In some embodiments, the associated UE obtains the first measurement result after performing sidelink reference signal measurement. Optionally, the first measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0492] In some embodiments, based on the reporting configuration in the measurement configuration, the associated UE may send the first measurement result to the access network device. Optionally, the measurement configuration may be event-triggered reporting, where the associated UE sends the first measurement result to the access network device when the first measurement result meets a preset condition. Alternatively, the measurement configuration may be periodic reporting, where the associated UE may periodically send the first measurement result to the access network device at periodic intervals. The first measurement result may be provided to the access network device as a basis for determining perceived service continuity.

[0493] In some embodiments, the first communications node sends a measurement configuration of the first reference signal to an associated UE.

[0494] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, the first reference signal is a downlink reference signal, the measurement configuration of the first reference signal is a measurement configuration of a downlink reference signal of a serving cell and / or a neighboring cell, and serving cell and / or neighboring cell measurements are performed to ensure continuity of a perception service. Before an associated UE measures the downlink reference signal, the core network device sends the downlink reference signal measurement configuration to the associated UE.

[0495] In some embodiments, the core network device provides the measurement configuration of the downlink reference signal to the associated UE, including the core network device sending the measurement configuration of the downlink reference signal of the access network device corresponding to the serving cell and / or the measurement configuration of the downlink reference signal of the access network device corresponding to the neighboring cell to the associated UE.

[0496] In some embodiments, the measurement configuration of the downlink reference signal is generated based on the configuration of the above-mentioned time-frequency resources. The measurement configuration of the downlink reference signal is the same as the configuration of the above-mentioned time-frequency resources, or the measurement configuration of the downlink reference signal is a subset of the configuration of the above-mentioned time-frequency resources, or the configuration of the above-mentioned time-frequency resources is a subset of the measurement configuration. In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first reference signal is a sidelink reference signal, and the measurement configuration of the first conference signal is the measurement configuration of the sidelink reference signal between the associated UE and the terminal device.

[0497] In some embodiments, the access network device provides the associated UE with a measurement configuration of a sidelink reference signal, including the access network device providing the associated UE with a measurement configuration of a terminal device that transmits a sidelink reference signal with the associated UE.

[0498] In some embodiments, a sidelink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The sidelink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the sidelink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0499] In some embodiments, the measurement configuration of the first reference signal includes at least one of a measurement amount, a measurement period, a reporting configuration, etc. of the first reference signal in addition to at least one of a time domain resource position, a frequency domain resource position, and a spatial domain resource position.

[0500] In some embodiments, the first communication node obtains the configuration of the time-frequency resources of the first reference signal from the second communication node.

[0501] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first reference signal is a downlink reference signal. Prior to sending the measurement configuration, the core network device obtains the configuration of the time-frequency resources for the downlink reference signal from the access network device. The core network device requests the access network device to determine the configuration of the time-frequency resources for the downlink reference signal.

[0502] In some embodiments, the access network device determines the configuration of the time-frequency resources of the downlink reference signal, including the access network device corresponding to the serving cell determining the configuration of the time-frequency resources of the downlink reference signal and / or the access network device corresponding to the neighboring cell determining the configuration of the time-frequency resources of the downlink reference signal.

[0503] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first reference signal is a sidelink reference signal. After receiving a sensing request sent by the terminal device, the access network device determines the time-frequency resource configuration of the sidelink reference signal based on the current network status and radio resource conditions.

[0504] In some embodiments, the first communication node sends a first request to the second communication node.

[0505] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first request is used to request configuration of time-frequency resources for a downlink reference signal. The core network device sends the first request to the access network device, including sending the first request to the access network device corresponding to the serving cell and / or sending the first request to the access network device corresponding to a neighboring cell.

[0506] In some embodiments, the first request is used to request the access network device to provide configuration of time-frequency resources for a downlink reference signal, wherein the downlink reference signal is used by the associated UE to perform measurements related to ensuring continuity of perceived service.

[0507] In some embodiments, the downlink reference signal may be at least one of a downlink sensing reference signal, a primary synchronization signal, an SSB, or a CSI-RS.

[0508] In some embodiments, the first communication node receives a first response sent by the second communication node.

[0509] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first response includes: indicating the configuration of time-frequency resources of a downlink reference signal.

[0510] In some embodiments, the core network device obtains the configuration of the time-frequency resources of the downlink reference signal of the access network device, including: obtaining the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the neighboring cell.

[0511] For implementation method 2

[0512] In some embodiments, the first communication node receives the second measurement result sent by the second communication node.

[0513] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second measurement result is a measurement result of the access network device on the uplink reference signal of the associated UE.

[0514] In some embodiments, the access network device corresponding to the serving cell and the access network device corresponding to the neighboring cell may obtain corresponding measurement results after performing measurements.

[0515] Optionally, the second measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the uplink reference signal of the serving cell and / or the neighboring cell.

[0516] In some embodiments, according to the reporting configuration in the measurement configuration, the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell can send the measurement results to the core network device, and the core network device receives the second measurement results sent by the access network device.

[0517] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The second measurement result is a measurement result of a sidelink reference signal associated with the UE and the terminal device. In some embodiments, the terminal device obtains the second measurement result after performing a sidelink reference signal measurement. Optionally, the second measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0518] Optionally, the measurement configuration is event-triggered reporting, and when the second measurement result meets the preset conditions, the second communication node immediately sends the second measurement result to the first communication node device; or, the measurement configuration is periodic reporting, and the second communication node periodically sends the second measurement result to the first communication node at periodic time intervals.

[0519] In some embodiments, the first communication node sends a measurement configuration of the second reference signal to the second communication node.

[0520] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal, and the measurement configuration of the second reference signal includes all or part of the information of the uplink reference signal measurement performed by the access network device.

[0521] In some embodiments, the access network device is an access network device corresponding to a neighboring cell.

[0522] In some embodiments, the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell and the measurement configuration determined by the access network device corresponding to the serving cell are the same measurement configuration, or the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell and the measurement configuration determined by the access network device corresponding to the serving cell are not the same measurement configuration.

[0523] When the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell is not the same as the measurement configuration determined by the access network device corresponding to the serving cell, the core network device needs to send the measurement configuration of the uplink reference signal to the access network device corresponding to the serving cell.

[0524] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The second reference signal is a sidelink reference signal, and the measurement configuration of the sidelink reference signal is a measurement configuration of the sidelink reference signal associated with the UE and the terminal device.

[0525] In some embodiments, the access network device provides a measurement configuration of a sidelink reference signal to the terminal device, including the access network device providing a measurement configuration for sidelink reference signal transmission with an associated UE to the terminal device.

[0526] In some embodiments, the first communication node sends a transmission configuration of the second reference signal to the associated UE via the second communication node.

[0527] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal, which is used to send the first information to the core network device after being measured by the access network device corresponding to the serving cell.

[0528] In some embodiments, the core network device sends an uplink reference signal transmission configuration to the associated UE through the access network device corresponding to the serving cell, and provides the associated UE with a set of parameters and settings for guiding the associated UE to send an uplink reference signal.

[0529] The transmission configuration may include at least one of the time-frequency resource position, frequency domain resource position, transmission period, and type of the uplink reference signal.

[0530] In some embodiments, the first communication node obtains the configuration of the time-frequency resources of the second reference signal from the second communication node.

[0531] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal. In some embodiments, the access network device corresponding to the serving cell determines the configuration of time-frequency resources for the uplink reference signal based on the current network status and resource conditions.

[0532] In some embodiments, the access network device corresponding to the serving cell sends the configuration of the time-frequency resources of the uplink reference signal to the core network device, the core network device receives the configuration of the time-frequency resources of the uplink reference signal, and sends the configuration of the time-frequency resources of the uplink reference signal to the associated UE and / or the access network device corresponding to the neighboring cell.

[0533] In some embodiments, the configuration of the time-frequency resource of the uplink reference signal includes at least one of a measurement configuration, a measurement amount, a measurement period, a reporting configuration, etc. of the uplink reference signal.

[0534] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The access network device determines a configuration of time-frequency resources for a sidelink reference signal. The configuration of the time-frequency resources for the sidelink reference signal includes at least one of a time domain resource location, a frequency domain resource location, and a spatial domain resource location of the sidelink reference signal.

[0535] In some embodiments, the first communication node sends a second request to the second communication node.

[0536] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second request is used to request configuration of time-frequency resources of an uplink reference signal.

[0537] In some embodiments, the core network device sends a second request to the access network device corresponding to the serving cell.

[0538] In some embodiments, the second request is used to request the access network device corresponding to the serving cell to provide the configuration of time-frequency resources for an uplink reference signal, wherein the uplink reference signal is a reference signal sent by the associated UE to the access network devices corresponding to the serving cell and the neighboring cells.

[0539] In some embodiments, the uplink reference signal may be at least one of an uplink sensing reference signal, an SRS, a DM-RS, and other reference signals.

[0540] In some embodiments, by sending a second request to the access network device corresponding to the serving cell, the core network device obtains the configuration information of the time-frequency resources of the uplink reference signal, so that the core network device can correctly instruct the associated UE to send the uplink reference signal at the appropriate time-frequency resource position and frequency domain resource position. The core network device can perform at least one of scheduling, optimization, correction and supplementation based on the configuration information of the time-frequency resources, thereby generating a measurement configuration of the uplink reference signal.

[0541] In some embodiments, the first communication node receives a second response sent by the second communication node.

[0542] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second response includes the configuration of time-frequency resources of the uplink reference signal.

[0543] In some embodiments, after the access network device corresponding to the serving cell receives the second request sent by the core network device, the access network device corresponding to the serving cell may send a second response to the core network device. The access network device corresponding to the serving cell may determine the configuration of time-frequency resources for the uplink reference signal based on the current network status and resource conditions, and the access network device corresponding to the serving cell may send the configuration of these time-frequency resources back to the core network device as the second response.

[0544] For implementation method three

[0545] In some embodiments, the first communication node receives switching indication information sent by the second communication node, where the switching indication information is used to indicate relevant information of a cell switching event of the associated UE.

[0546] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device, wherein the access network device includes a source access network device and / or a target access network device, and the handover indication information includes first handover indication information and second handover indication information.

[0547] In some embodiments, the second communication node includes a source access network, and the first communication node receives first switching indication information sent by the source access network device.

[0548] The first switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0549] In an optional example, the first switching indication information includes at least one of the following information:

[0550] UE identity of the associated UE;

[0551] The cell ID of the target cell;

[0552] The session identifier of the awareness session associated with the associated UE.

[0553] In some embodiments, the first handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the core network device can identify the associated UE and perform corresponding processing.

[0554] In some embodiments, the first handover indication information includes a cell identifier of a target cell. The cell identifier of the target cell is identification information indicating the target cell to which the associated UE is to be handed over. The cell identifier of the target cell may be at least one of a CGI, a PCI, etc. Through the target cell identifier, the core network device can know to which cell the associated UE is about to be handed over, and make corresponding handover decisions and configuration updates.

[0555] In some embodiments, the first switching indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a Sensing Session ID. Through the session identifier of the perception session, the core network device can associate the switching indication with the perception service and perform corresponding processing.

[0556] In some embodiments, the core network device receives a first switching indication message sent by the target access network device. The first switching indication message is used to indicate that a cell switching has occurred in a UE associated with the core network device, and the associated UE switches from a source cell to a target cell (i.e., a serving cell switches to a neighboring cell). The first switching indication message assists the core network device in making a perception node switching decision and ensures the smooth progress of the switching process.

[0557] In some embodiments, the second communication node includes a target access network device, and the first communication node receives the second switching indication information sent by the target access network device.

[0558] The second switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0559] In an optional example, the second switching indication information includes at least one of the following information:

[0560] UE identity of the associated UE;

[0561] The cell ID of the source cell;

[0562] The session identifier of the awareness session associated with the associated UE.

[0563] In some embodiments, the second handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the core network device can identify the associated UE and perform corresponding processing.

[0564] In some embodiments, the second handover indication information includes a cell identifier of a source cell, where the cell identifier of the source cell is identification information indicating the source cell before the associated UE is handed over, and the cell identifier of the source cell may be at least one of a CGI, a PCI, etc. The core network device may use the cell identifier of the source cell to determine the cell before the handover and perform a configuration update on the serving cell after the handover.

[0565] In some embodiments, the second handover indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a Sensing Session ID. Through the session identifier of the perception session, the core network device can associate the handover indication with the perception service and perform corresponding processing.

[0566] In some embodiments, the core network device receives a second switching indication information sent by the target access network device. The second switching indication information is used to indicate that a cell switching has occurred in the UE associated with the core network device, and the associated UE switches from the source cell to the target cell (i.e., the serving cell switches to the neighboring cell). The second switching indication information assists the core network device in making perception node switching decisions and ensures the smooth progress of the switching process.

[0567] In some embodiments, the first communication node sends a third request to the second communication node.

[0568] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The third request is used to request the access network device to report handover indication information.

[0569] The third request is used to instruct the source access network device to provide the core network device with the auxiliary information required for the switching perception node.

[0570] In some embodiments, after the source access network device receives the third request sent by the core network device, that is, after the source access network device receives the downlink reference signal request message sent by the core network device, it will provide the core network device with auxiliary information for sensing node switching.

[0571] In some embodiments, the auxiliary information may include at least one of the following information:

[0572] Handover type: indicates the type of handover, such as sensor node handover;

[0573] Handover target: indicates the target sensing node (target access network device) for handover;

[0574] Switching parameters: Contains the parameters required for switching, such as switching trigger conditions, switching timing, etc.

[0575] In some embodiments, the first communication node receives capability information reported by the associated UE, where the capability information is used to indicate whether the associated UE supports the capability associated with the first information.

[0576] In some embodiments, the first communication node is a core network device.

[0577] In some embodiments, the capability information includes the associated UE's measurement capability of downlink reference signals. Specifically, the capability information includes the associated UE's measurement capability of downlink reference signals sent by the serving base station corresponding to the current serving cell and the measurement capability of downlink reference signals sent by the neighboring base station corresponding to the neighboring cell.

[0578] In some embodiments, the capability information includes the associated UE's ability to transmit an uplink reference signal. For example, the associated UE may report its own measurement of the uplink reference signal or the downlink reference signal to the core network device, and report the measurement results to the core network device. The measurement results may be provided to the core network device as a basis for determining the continuity of the sensing service, so that the core network device can switch the sensing node according to specific circumstances.

[0579] In some embodiments, the first communication node sends a request for reporting capability information to the associated UE.

[0580] In some embodiments, the first communication node receives at least one of the following information:

[0581] First indication information, where the first indication information is used to indicate whether a sensing service associated with a sensing target needs to ensure the continuity of the sensing service;

[0582] Second indication information, where the second indication information is used to indicate that the sensing target is an active sensing target;

[0583] The identification information of the associated UE.

[0584] In summary, the method provided in the embodiments of the present application determines, based on the first communication node receiving first information sent by an associated UE and a second communication node, whether to switch perception nodes according to the content of the first information. The perception node is used to perform perception services for the perception targets corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE. This ensures that the perception targets can be uniquely identified when switching between the coverage areas of different perception nodes, thereby maintaining the continuity of the perception services.

[0585] Associated UE side

[0586] FIG19 is a flow chart showing a method for executing a sensing service provided by an exemplary embodiment of the present application. Taking the method executed by the associated UE as an example, the method includes at least some of the following steps:

[0587] Step 310: Send first information to the first communication node.

[0588] The first information is used to assist the first communication node in determining or deciding whether to switch the sensing node. The first information is reference information used to assist the first communication node in deciding whether the sensing node of the sensing target needs to be switched. In some embodiments, the first information includes mobility information about the sensing target.

[0589] In some embodiments, the sensing node is used to perform a sensing service on a sensing target corresponding to an associated UE, and a communication range of the second communication node and a communication range of the associated UE intersect. The associated UE refers to a terminal device associated with the sensing target.

[0590] In some embodiments, the associated UE provides the first communication node with relevant information about the mobility of the sensing target by sending first information to the first communication node.

[0591] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The access network device is associated with a serving cell and / or a neighboring cell of an associated UE.

[0592] Optionally, the first message includes the measurement results of the downlink reference signals of the serving cell and / or the neighboring cell, and the associated UE sends the first message to the core network device, including the measurement results of the downlink reference signals of the serving cell and / or the neighboring cell sent by the associated UE to the access network device.

[0593] In some embodiments, a downlink reference signal is a signal sent by a base station to an associated UE for transmitting data and providing related services. The associated UE can evaluate the signal conditions of its serving cell and / or neighboring cells by measuring the strength, quality, and other parameters of the downlink reference signal.

[0594] In some embodiments, by sending the first measurement result to the core network device through the associated UE, the associated UE can provide the core network device with information about the signal conditions of the serving cell and / or neighboring cells. The first measurement result can be used to assist the core network device in determining the switching of the sensing node to ensure continuous execution and effective coverage of the sensing service.

[0595] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The associated UE sends a first message to the access network device. The first message includes a measurement result of a sidelink reference signal, that is, the first message includes the measurement result of the sidelink reference signal of the associated UE.

[0596] In some embodiments, the associated UE sends the first measurement result to the first communication node.

[0597] In some embodiments, the first communication node is a core network device, wherein the first measurement result is a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell.

[0598] In some embodiments, the associated UE obtains a first measurement result after performing downlink reference signal measurement. Optionally, the first measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the downlink reference signal of the serving cell and / or the neighboring cell.

[0599] The associated UE can report its own measurement results of the downlink reference signal to the access network equipment, and the access network equipment reports the measurement results to the core network equipment. The measurement results can be provided to the core network equipment as a basis for determining the continuity of the perceived service.

[0600] In some embodiments, the first communication node is an access network device. The first measurement result is a measurement result of a sidelink reference signal between the associated UE and the terminal device. In some embodiments, the first measurement result is obtained after the associated UE performs measurement of the sidelink reference signal. Optionally, the first measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0601] In some embodiments, based on a reporting configuration in the measurement configuration, the associated UE may send the first measurement result to the first communication node. Optionally, the measurement configuration is event-triggered reporting, where the associated UE sends the first measurement result to the first communication node when the first measurement result meets a preset condition; or the measurement configuration is periodic reporting, where the associated UE may periodically send the first measurement result to the first communication node at periodic time intervals.

[0602] In some embodiments, the associated UE receives a measurement configuration of a first reference signal sent by the first communication node;

[0603] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first reference signal is a downlink reference signal. The downlink reference signal measurement configuration is a downlink reference signal measurement configuration of a serving cell and / or a neighboring cell, and serving cell and / or neighboring cell measurements are performed to ensure continuity of sensing services.

[0604] The core network device provides the measurement configuration of the downlink reference signal to the associated UE, including the measurement configuration of the downlink reference signal of the access network device corresponding to the serving cell and / or the measurement configuration of the downlink reference signal of the access network device corresponding to the neighboring cell sent by the core network device to the associated UE.

[0605] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first reference signal is a sidelink reference signal. The sidelink reference signal measurement configuration is a sidelink reference signal measurement configuration between an associated UE and the terminal device. In some embodiments, the access network device provides the sidelink reference signal measurement configuration to the associated UE, including providing the access network device with the associated UE with a measurement configuration of the terminal device that transmits the sidelink reference signal to the associated UE.

[0606] In some embodiments, a measurement configuration of the first reference signal is generated based on the configuration of the time-frequency resources. The measurement configuration of the first reference signal is the same as the configuration of the time-frequency resources, or the measurement configuration of the first reference signal is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0607] In some embodiments, in addition to at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location, the measurement configuration of the first reference signal also includes at least one of the measurement amount, measurement period, and reporting configuration of the first reference signal.

[0608] In some embodiments, the associated UE reports capability information to the first communication node, where the capability information is used to indicate whether the associated UE supports the capability associated with the first information.

[0609] In some embodiments, the first communication node is a core network device.

[0610] In some embodiments, the capability information includes the associated UE's capability to measure downlink reference signals. Optionally, the capability information includes: the associated UE's capability to measure downlink reference signals sent by a serving base station corresponding to a current serving cell, and / or the associated UE's capability to measure downlink reference signals sent by a neighboring base station corresponding to a neighboring cell.

[0611] In some embodiments, the capability information includes the associated UE's capability to send uplink reference signals, and the sending capability includes at least one of whether uplink reference signal sending is supported, what type of uplink reference signal sending is supported, the frequency range supported for sending, and the maximum sending power supported.

[0612] In some embodiments, the first communication node is an access network device. The capability information includes the associated UE's ability to measure sidelink reference signals. Optionally, the capability information includes the associated UE's ability to measure sidelink reference signals sent by the terminal device, and / or the capability information includes the associated UE's ability to send sidelink reference signals. Optionally, the capability information includes the associated UE's ability to send sidelink reference signals to the terminal device.

[0613] In some embodiments, the associated UE receives a request for reporting capability information sent by the first communication node.

[0614] In some embodiments, the associated UE sends at least one of the following information:

[0615] First indication information, where the first indication information is used to indicate whether a sensing service associated with a sensing target needs to ensure the continuity of the sensing service;

[0616] Second indication information, where the second indication information is used to indicate that the sensing target is an active sensing target;

[0617] The identification information of the associated UE.

[0618] FIG20 shows a flow chart of a method for executing a sensing service provided by an exemplary embodiment of the present application. Taking the method executed by the associated UE as an example, the method includes at least some of the following steps:

[0619] Step 410: Receive a transmission configuration of a second reference signal sent by a first communication node.

[0620] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the second reference signal is an uplink reference signal.

[0621] The uplink reference signal is used by the access network device to transmit first information to the core network device after measurement. The first information is reference information used to assist the core network device in determining whether a sensing node for a sensing target needs to be switched. In some embodiments, the first information includes mobility information about the sensing target.

[0622] In some embodiments, the uplink reference signal is a signal sent by an associated UE to an access network device for transmitting data and providing related services.

[0623] In some embodiments, the core network device sends an uplink reference signal sending configuration to the associated UE through the access network device, so as to guide the associated UE to send the uplink reference signal.

[0624] In some embodiments, the associated UE receives and applies the uplink reference signal transmission configuration sent by the core network device. The associated UE configures and adjusts its own uplink reference signal transmission method based on the parameters and settings provided by the core network device.

[0625] In some embodiments, the associated UE sends an uplink reference signal to the access network device. The access network device measures and evaluates the received uplink reference signal sent by the associated UE, and then sends the measurement result to the core network device as the first information.

[0626] In some embodiments, the associated UE receives an uplink reference signal transmission configuration from a core network device and transmits the uplink reference signal according to the transmission configuration. The access network device measures the strength, quality, and other parameters of the uplink reference signal and transmits the measurement results to the core network device. The measurement results are used to provide information about the signal condition at the associated UE's location.

[0627] In summary, the method provided in the embodiment of the present application is that the associated UE sends the first information to the core network device, or the associated UE receives the sending configuration of the uplink reference signal sent by the core network device, and the uplink reference signal is used to send the first information to the core network device after being measured by the access network device, wherein the first information is used to assist the core network device in determining the switching of the perception node; after the core network device receives the first information sent by the associated UE, it determines the switching of the perception node according to the content of the first information, wherein the perception node is used to perform the perception service for the perception target corresponding to the associated UE, and the access network device is associated with the service cell and / or neighboring cell of the associated UE. It ensures that the perception target can be uniquely identified when it switches between different perception nodes, and maintains the continuity of the perception service.

[0628] In some embodiments, the associated UE transmits the second reference signal based on a transmission configuration of the second reference signal.

[0629] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the second reference signal is an uplink reference signal.

[0630] The uplink reference signal is used to send the first information to the core network device after being measured by the access network device.

[0631] In some embodiments, the core network device sends an uplink reference signal transmission configuration to the associated UE through the access network device, and provides the associated UE with a set of parameters and settings for guiding the associated UE to send the uplink reference signal.

[0632] In some embodiments, after receiving the activation indication forwarded by the access network device corresponding to the serving cell, the associated UE transmits the uplink reference signal according to the time domain resource position in the configuration information of the uplink reference signal.

[0633] To summarize, the method provided in the embodiment of the present application is that the associated UE sends the first information to the first communication node, or the associated UE receives the sending configuration of the second reference signal sent by the first communication node, and the second reference signal is used to send the first information to the first communication node after being measured by the access network device, wherein the first information is used to assist the first communication node in determining the switching of the perception node; after the first communication node receives the first information sent by the associated UE, it determines the switching of the perception node according to the content of the first information, wherein the perception node is used to perform the perception service on the perception target corresponding to the associated UE, ensuring that the perception target can uniquely identify the perception target when it switches between different perception nodes, and maintaining the continuity of the perception service.

[0634] Second communication node side

[0635] FIG21 is a flow chart of a method for executing a sensing service provided by an exemplary embodiment of the present application. Taking the method executed by the second communication node as an example, the method includes at least some of the following steps:

[0636] Step 510: Send a first reference signal.

[0637] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the first reference signal is a downlink reference signal.

[0638] The downlink reference signal is used to transmit first information to the core network device after being measured by the associated UE. The first information is reference information used to assist the core network device in deciding whether a sensing node for a sensing target needs to be switched. In some embodiments, the first information includes mobility information about the sensing target.

[0639] In some embodiments, the downlink reference signal is a signal sent by an access network device to an associated UE for transmitting data and providing related services.

[0640] In some embodiments, the associated UE may measure the received downlink reference signal. Optionally, the associated UE may measure parameters such as RSRP, RSRQ, and SINR of the downlink reference signal. The measurement results may help the associated UE evaluate the quality and performance of the downlink reference signal.

[0641] In some embodiments, the associated UE sends first information to the core network device, the first information providing feedback from the associated UE on a downlink reference signal. The first information can help the core network device understand the status of the associated UE receiving the downlink reference signal, so that the core network device can perform corresponding optimization and adjustment.

[0642] In some embodiments, the first communication node is an access network device, the second communication node is a terminal device, and the first reference signal is a sidelink reference signal. A sidelink reference signal is a reference signal used to measure the channel state between the terminal device and an associated UE. The sidelink reference signal is used by the associated UE to transmit first information to the access network device after measurement. This first information is reference information used to assist the access network device in determining whether a sensing node for a sensing target needs to be switched.

[0643] In some embodiments, the second communication node sends the first information to the first communication node.

[0644] The first information is used to assist the core network device in determining the switching of the perception node. The first information includes relevant data or requests about the perception service. The perception node is used to perform the perception service for the perception target corresponding to the associated UE.

[0645] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the access network device is associated with a serving cell and / or a neighboring cell of the associated UE. In some embodiments, the access network device sends the first information to the core network device, and the access network device provides the core network device with relevant information about the execution of the sensing service.

[0646] Optionally, the first message includes the measurement result of the uplink reference signal sent by the associated UE, and the access network device sends the first message to the core network device, including the access network device sending the measurement result of the uplink reference signal sent by the associated UE to the core network device.

[0647] In some embodiments, an access network device sends first information to a core network device. The first information may include information related to the mobility of a sensing target, such as location information of an associated UE. The access network device communicates with the core network device and sends the first information to the core network device for the core network device to coordinate the execution of the sensing service. For example, the core network device determines the switching of the sensing node based on the first information sent by the access network device.

[0648] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first information is information sent by the associated UE to the access network device, or information sent by the terminal device to the access network device. The first information includes a measurement result of a sidelink reference signal. The first information includes the measurement result of the sidelink reference signal of the associated UE and / or the measurement result of the sidelink reference signal of the terminal device.

[0649] The reporting method of the first information includes but is not limited to at least one of the following three implementation methods (the order does not represent the advantages or disadvantages of the implementation methods):

[0650] Implementation method 1: the associated UE measures the first reference signal;

[0651] Implementation method 2: the associated UE sends a second reference signal;

[0652] Implementation method three: the associated UE measures the first reference signal (where the first communication node is a core network device and the second communication node is an access network device).

[0653] For implementation method one

[0654] In some embodiments, the second communication node provides the first communication node with a configuration of time-frequency resources of the first reference signal.

[0655] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the first reference signal is a downlink reference signal.

[0656] In some embodiments, the access network device determines the configuration of time-frequency resources for the downlink reference signal based on the current network status and resource availability, namely, determining at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location of the downlink reference signal. Optionally, this time-frequency resource configuration also includes a reporting configuration. The access network device includes this time-frequency resource configuration in a first response and returns it to the core network device.

[0657] In some embodiments, the access network device determines the configuration of the time-frequency resources of the downlink reference signal, including the access network device corresponding to the serving cell determining the configuration of the time-frequency resources of the downlink reference signal and / or the access network device corresponding to the neighboring cell determining the configuration of the time-frequency resources of the downlink reference signal.

[0658] In some embodiments, the access network device provides the core network device with the configuration of the time-frequency resources of the downlink reference signal, including providing the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the neighboring cell.

[0659] In some embodiments, the second communication node receives the first request sent by the first communication node.

[0660] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first request is used to request configuration of time-frequency resources of a downlink reference signal.

[0661] In some embodiments, the access network device receives the first request sent by the core network device, including: the core network sends the first request to the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell.

[0662] The first request is used to request configuration of time-frequency resources of a downlink reference signal.

[0663] In some embodiments, the downlink reference signal may be at least one of reference signals such as DL Sensing RS, PRS, SSB or CSI-RS.

[0664] In some embodiments, the second communication node sends a first response to the first communication node.

[0665] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first response includes: configuration of time-frequency resources of a downlink reference signal.

[0666] In some embodiments, the access network device sends a first response to the core network device, i.e., sends the configuration of the time-frequency resources of the downlink reference signal to the core network device, including: the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the neighboring cell.

[0667] For implementation method 2

[0668] In some embodiments, the second communication node sends the second measurement result to the first communication node.

[0669] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second measurement result is a measurement result of the access network device on the uplink reference signal of the associated UE.

[0670] In some embodiments, the access network device obtains corresponding measurement results after performing the measurement. Optionally, the second measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the uplink reference signal of the serving cell and / or the neighboring cell.

[0671] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The second measurement result is a measurement result of a sidelink reference signal associated with the UE and the terminal device. Optionally, the second measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0672] In some embodiments, according to the reporting configuration in the measurement configuration, the second communication node may send the measurement result to the first communication node, and the first communication node receives the second measurement result sent by the second communication node.

[0673] Optionally, the measurement configuration is event-triggered reporting, and when the second measurement result meets the preset conditions, the second communication node immediately sends the second measurement result to the first communication node; or, the measurement configuration is periodic reporting, and the second communication node periodically sends the second measurement result to the first communication node at periodic time intervals.

[0674] In some embodiments, the second communication node receives a measurement configuration of a second reference signal sent by the first communication node.

[0675] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal. The uplink reference signal measurement configuration includes all information for the access network device to perform uplink reference signal measurement.

[0676] In some embodiments, the access network device is an access network device corresponding to a neighboring cell.

[0677] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The second reference signal is a sidelink reference signal. The measurement configuration of the sidelink reference signal is the measurement configuration of the sidelink reference signal associated with the UE and the terminal device. In some embodiments, the second communication node receives the measurement configuration of the second reference signal sent by the first communication node, and the measurement configuration of the second reference signal is the same as the configuration of the time-frequency resource, or the measurement configuration of the second reference signal is a subset of the configuration of the time-frequency resource, or the configuration of the time-frequency resource is a subset of the measurement configuration.

[0678] In some embodiments, the measurement configuration of the second reference signal includes at least one of a measurement amount, a measurement period, a reporting configuration, etc. of the second reference signal in addition to at least one of a time domain resource position, a frequency domain resource position, and a spatial domain resource position.

[0679] In some embodiments, the second communication node provides the first communication node with a configuration of time-frequency resources of the second reference signal.

[0680] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal. The access network device determines a configuration of time-frequency resources for the uplink reference signal and provides the configuration of the time-frequency resources for the uplink reference signal to the core network device.

[0681] In some embodiments, the configuration of the time-frequency resource of the uplink reference signal includes at least one of a measurement configuration, a measurement amount, a measurement period, a reporting configuration, etc. of the uplink reference signal.

[0682] Optionally, the access network device refers to the access network device corresponding to the serving cell. In some embodiments, the access network device corresponding to the serving cell determines the configuration of the time-frequency resources of the uplink reference signal according to the current network status and resource conditions.

[0683] In some embodiments, the access network device corresponding to the serving cell sends the configuration of the time-frequency resources of the uplink reference signal to the core network device, the core network device receives the configuration of the time-frequency resources of the uplink reference signal, and sends the configuration of the time-frequency resources of the uplink reference signal to the associated UE and / or the access network device corresponding to the neighboring cell.

[0684] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The second reference signal is a sidelink reference signal. After receiving the sensing request sent by the terminal device, the access network device determines the time-frequency resource configuration of the sidelink reference signal based on the current network status and radio resource conditions.

[0685] In some embodiments, the second communication node receives the second request sent by the first communication node.

[0686] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, the second reference signal is an uplink reference signal, and the second request is used to request configuration of time-frequency resources for the uplink reference signal.

[0687] In some embodiments, the access network device corresponding to the serving cell receives the second request sent by the core network device.

[0688] In some embodiments, the second request is used to request the access network device corresponding to the serving cell to provide the configuration of time-frequency resources for an uplink reference signal, wherein the uplink reference signal is a reference signal sent by the associated UE to the access network device.

[0689] In some embodiments, after receiving the second request sent by the core network device, the access network device corresponding to the serving cell determines the configuration of the time-frequency resources of the uplink reference signal according to the current network status and resource conditions.

[0690] In some embodiments, the second communication node sends a second response to the first communication node.

[0691] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, the second reference signal is an uplink reference signal, and the second response includes: configuration of time-frequency resources of the uplink reference signal.

[0692] For implementation method three

[0693] In some embodiments, the second communication node sends switching indication information to the first communication node, where the switching indication information is used to indicate relevant information of a cell switching event of the associated UE.

[0694] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device, wherein the access network device includes a source access network device and / or a target access network device, and the handover indication information includes first handover indication information and second handover indication information.

[0695] In some embodiments, the second communication node includes a source access network, and the source access network device sends first switching indication information to the first communication node.

[0696] The first switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0697] In an optional example, the first switching indication information includes at least one of the following information:

[0698] UE identity of the associated UE;

[0699] The cell ID of the target cell;

[0700] The session identifier of the awareness session associated with the associated UE.

[0701] In some embodiments, the first handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the core network device can identify the associated UE and perform corresponding processing.

[0702] In some embodiments, the first handover indication information includes a cell identifier of a target cell. The cell identifier of the target cell is identification information indicating the target cell to which the associated UE is to be handed over. The cell identifier of the target cell may be at least one of a CGI, a PCI, etc. Through the target cell identifier, the core network device can know to which cell the associated UE is about to be handed over, and make corresponding handover decisions and configuration updates.

[0703] In some embodiments, the first handover indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a perception session identifier. Through the session identifier of the perception session, the core network device can associate the handover indication with the perception service and perform corresponding processing.

[0704] In some embodiments, the source access network device sends a first switching indication message to the core network device, notifying the core network device that a cell switching has occurred for the associated UE, and the associated UE switches from the source cell to the target cell (i.e., the serving cell switches to the neighboring cell). The core network device receives the first switching indication message sent by the source access network device. The first switching indication message assists the core network device in making perception node switching decisions and ensures the smooth progress of the switching process.

[0705] In some embodiments, the second communication node includes a target access network device, and the target access network device sends the second switching indication information to the first communication node.

[0706] The second switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0707] In an optional example, the second switching indication information includes at least one of the following information:

[0708] UE identity of the associated UE;

[0709] The cell ID of the source cell;

[0710] The session identifier of the awareness session associated with the associated UE.

[0711] In some embodiments, the second handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the core network device can identify the associated UE and perform corresponding processing.

[0712] In some embodiments, the second handover indication information includes a cell identifier of a source cell, where the cell identifier of the source cell is identification information indicating the source cell before the associated UE is handed over, and the cell identifier of the source cell may be at least one of a CGI, a PCI, etc. The core network device may use the cell identifier of the source cell to determine the cell before the handover and perform a configuration update on the serving cell after the handover.

[0713] In some embodiments, the second handover indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a perception session identifier. Through the session identifier of the perception session, the core network device can associate the handover indication with the perception service and perform corresponding processing.

[0714] In some embodiments, the target access network device sends a second switching indication message to the core network device, notifying the core network device that a cell switching has occurred for the associated UE, and the associated UE switches from the source cell to the target cell (i.e., the serving cell switches to the neighboring cell). The core network device receives the second switching indication message sent by the target access network device. The second switching indication message assists the core network device in making perception node switching decisions and ensures the smooth progress of the switching process.

[0715] In some embodiments, the second communication node receives the third request sent by the first communication node.

[0716] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The third request is used to request the access network device to report handover indication information.

[0717] In some embodiments, the access network device receives the third request sent by the core network device, that is, the access network device receives the downlink reference signal request message sent by the core network device.

[0718] The third request is used to instruct the source access network device to provide the core network device with the auxiliary information required for the switching perception node.

[0719] In some embodiments, after the source access network device receives the third request sent by the core network device, that is, after the source access network device receives the downlink reference signal request message sent by the core network device, it will provide the core network device with auxiliary information for sensing node switching.

[0720] In some embodiments, the auxiliary information may include at least one of the following information:

[0721] Handover type: indicates the type of handover, such as sensor node handover;

[0722] Handover target: indicates the target sensing node (target access network device) for handover;

[0723] Switching parameters: Contains the parameters required for switching, such as switching trigger conditions, switching timing, etc.

[0724] In summary, the method provided in the embodiment of the present application is that the second communication node sends a first reference signal to the associated UE, and the first reference signal is used to send first information to the first communication node after being measured by the associated UE, or the second communication node sends first information to the first communication node, wherein the first information is used to assist the first communication node in determining the switching of the perception node. After the first communication node receives the first information sent by the second communication node, it determines the switching of the perception node based on the content of the first information, wherein the perception node is used to perform a perception service on the perception target corresponding to the associated UE, ensuring that the perception target can uniquely identify the perception target when it switches between different perception nodes, and maintaining the continuity of the perception service.

[0725] First communication node device side

[0726] FIG22 shows a block diagram of a first communication device provided by an exemplary embodiment of the present application. The device 1500 has the function of implementing the above-mentioned method for executing the perception service. The first communication device may include: a first receiving module 1510 and a first switching module 1520;

[0727] The first receiving module 1510 is configured to receive first information sent by an associated UE or a second communication node;

[0728] The first information is used to assist the first communication device in determining the switching of the sensing node. The first information is reference information used to assist the first communication device in deciding whether the sensing node for the sensing target needs to be switched. The communication range of the second communication node intersects with the communication range of the associated UE.

[0729] In some embodiments, the first information includes mobility information about the perception target. The associated UE is a UE corresponding to the perception target. The associated UE can be the perception target itself, such as a vehicle-mounted terminal accessing a communication network. The associated UE can also be a UE used by the perception target, such as a mobile phone used by the person if the perception target is a person.

[0730] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The first information is information sent by the associated UE to the core network device, or information sent by the access network device to the core network device. The access network device is associated with the serving cell and / or neighboring cell of the associated UE. In a cell handover scenario, the serving cell of the associated UE includes at least one of a source serving cell and a target serving cell.

[0731] In some embodiments, the first information includes the measurement results of the downlink reference signal of the serving cell and / or the neighboring cell, that is, the measurement results of the downlink reference signal of the serving cell and / or the neighboring cell by the associated UE. In some embodiments, the first information includes the measurement results of the uplink reference signal of the associated UE, that is, the measurement results of the uplink reference signal of the associated UE by the access network device of the serving cell and / or the neighboring cell. In some embodiments, the first information includes a cell switching event. The cell switching event is used to indicate relevant information of the cell switching process of the associated UE. The cell switching event is reported by the access network device corresponding to the source serving cell and / or the target serving cell.

[0732] In some embodiments, the first information includes at least one of a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell, a measurement result of an uplink reference signal of an associated UE, and a cell switching event.

[0733] In some embodiments, the first communication device is an access network device, and the second communication node is a terminal device. The first information is information sent by an associated UE to the access network device, or information sent by the terminal device to the access network device. The first information includes a measurement result of a sidelink reference signal. The first information includes the measurement result of the sidelink reference signal of the associated UE and / or the measurement result of the sidelink reference signal of the terminal device.

[0734] The first switching module 1520 is configured to determine the switching of the sensing node based on the first information.

[0735] The first communication device determines or decides whether to switch the perception node based on the first information, wherein the perception node is used to perform a perception service on a perception target corresponding to the associated UE.

[0736] In some embodiments, a sensing node refers to a node for performing a sensing service, wherein the sensing node senses a sensing target corresponding to an associated UE. For example, the sensing service may be measuring the position of the sensing target within a cell covered by an access network device.

[0737] The perception target can be an object, area or event that needs to be perceived or monitored.

[0738] In some embodiments, the sensing target is a terminal device that can establish a communication connection with the access network device and has a signal transmission capability or a signal reception capability. Optionally, in some embodiments, the sensing target can establish a communication connection with the access network device by means of an associated UE.

[0739] In some embodiments, the access network device provides access services for associated UEs. Taking the access network device as a base station as an example, the access network device includes a serving base station (source base station) and / or a neighboring base station (candidate base station), and the coverage area of ​​the access network device includes the serving cell and / or the neighboring cell.

[0740] In some embodiments, the location of the sensing target is determined based on the sensing signal. The sensing target may be in a state of constant movement in the cell covered by the access network device, so the core network device needs to switch the sensing node, that is, switch the access network device.

[0741] For implementation method one

[0742] The first receiving module 1510 is further configured to receive a first measurement result sent by the associated UE.

[0743] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The first measurement result is a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell.

[0744] In some embodiments, after performing the measurement, the associated UE obtains corresponding measurement results. Optionally, the first measurement result may include at least one of RSRP, RSRQ, SINR, etc., of the downlink reference signal of the serving cell and / or the neighboring cell. Based on the measurement results, the associated UE can obtain information about the downlink reference signal of the serving cell and / or the neighboring cell.

[0745] In some embodiments, based on a reporting configuration in the measurement configuration, the associated UE may send the first measurement result to the core network device, and the core network device may receive the first measurement result sent by the associated UE. Optionally, the measurement configuration is event-triggered reporting, in which case the associated UE sends the first measurement result to the core network device when the first measurement result meets a preset condition; or the measurement configuration is periodic reporting, in which case the associated UE may periodically send the first measurement result to the core network device at periodic time intervals.

[0746] The associated UE may report its downlink reference signal measurement results to the access network device. The access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell forwards the measurement results to the core network device. The measurement results may be provided to the core network device as a basis for determining perceived service continuity.

[0747] In some embodiments, the first communication device is an access network device, and the second communication node is a terminal device. The first measurement result is a measurement result of a sidelink reference signal between the associated UE and the terminal device. In some embodiments, the associated UE obtains the first measurement result after performing a sidelink reference signal measurement. Optionally, the first measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0748] In some embodiments, based on the reporting configuration in the measurement configuration, the associated UE may transmit the first measurement result to the access network device. Optionally, the measurement configuration may be event-triggered reporting, where the associated UE transmits the first measurement result to the access network device when the first measurement result meets a preset condition. Alternatively, the measurement configuration may be periodic reporting, where the associated UE may periodically transmit the first measurement result to the access network device at periodic intervals. The first measurement result may be provided to the access network device as a basis for determining perceived service continuity.

[0749] In some embodiments, the first communication device further includes a sending module.

[0750] The sending module is configured to send the measurement configuration of the first reference signal to the associated UE.

[0751] In some embodiments, the first communication device is an access network device, the second communication node is a terminal device, the first reference signal is a downlink reference signal, the measurement configuration of the first reference signal is the measurement configuration of the downlink reference signal of the serving cell and / or the neighboring cell, and the serving cell and / or the neighboring cell measurement is performed to ensure the continuity of the perceived service.

[0752] In some embodiments, the core network device provides a measurement configuration of a downlink reference signal to the associated UE, including the core network device sending a measurement configuration of a downlink reference signal of the access network device corresponding to the serving cell and / or a measurement configuration of a downlink reference signal of the access network device corresponding to the neighboring cell to the associated UE.

[0753] In some embodiments, a downlink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The downlink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the downlink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0754] In some embodiments, the first communication device is an access network device, the second communication node is a terminal device, the first reference signal is a sidelink reference signal, and the measurement configuration of the first participating signal is a measurement configuration of a sidelink reference signal associated with a UE and a terminal device.

[0755] In some embodiments, the access network apparatus provides the associated UE with a measurement configuration of a sidelink reference signal, including the access network apparatus providing the associated UE with a measurement configuration of a terminal device that transmits a sidelink reference signal with the associated UE.

[0756] In some embodiments, a sidelink reference signal measurement configuration is generated based on the configuration of the time-frequency resources. The sidelink reference signal measurement configuration is the same as the configuration of the time-frequency resources, or the sidelink reference signal measurement configuration is a subset of the configuration of the time-frequency resources, or the configuration of the time-frequency resources is a subset of the measurement configuration.

[0757] In some embodiments, the measurement configuration of the first reference signal includes, in addition to at least one of a time domain resource location, a frequency domain resource location, and a spatial domain resource location, at least one of a measurement amount of the first reference signal, a measurement period, and a reporting configuration. In some embodiments, the first communication apparatus further includes an acquisition module.

[0758] An acquisition module is used to obtain the configuration of the time-frequency resources of the first reference signal from the second communication node.

[0759] In some embodiments, the first communication device is an access network device, and the second communication node is a terminal device. The first reference signal is a downlink reference signal. Prior to sending the measurement configuration, the core network device obtains the configuration of the time-frequency resources for the downlink reference signal from the access network device. The core network device requests the access network device to determine the configuration of the time-frequency resources for the downlink reference signal.

[0760] In some embodiments, the access network device determines the configuration of the time-frequency resources of the downlink reference signal, including the access network device corresponding to the serving cell determining the configuration of the time-frequency resources of the downlink reference signal and / or the access network device corresponding to the neighboring cell determining the configuration of the time-frequency resources of the downlink reference signal.

[0761] In some embodiments, the first communication device is an access network device, and the second communication node is a terminal device. The first reference signal is a sidelink reference signal. After receiving a sensing request sent by the terminal device, the access network device determines the configuration of time-frequency resources for the sidelink reference signal based on the current network status and radio resource conditions.

[0762] The sending module is configured to send a first request to the second communication node.

[0763] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The first request is used to request configuration of time-frequency resources for a downlink reference signal. The core network device sends the first request to the access network device, including sending the first request to the access network device corresponding to the serving cell and / or sending the first request to the access network device corresponding to the neighboring cell.

[0764] In some embodiments, the first request is used to request the access network apparatus to provide configuration of time-frequency resources for a downlink reference signal, wherein the downlink reference signal is used by the associated UE to perform measurements related to ensuring continuity of perceived service.

[0765] In some embodiments, the downlink reference signal may be at least one of a downlink sensing reference signal, a primary synchronization signal, an SSB, or a CSI-RS.

[0766] The first receiving module 1510 is configured to receive a first response sent by the second communication node.

[0767] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The first response includes: indicating the configuration of time-frequency resources of a downlink reference signal.

[0768] In some embodiments, the core network device obtains the configuration of the time-frequency resources of the downlink reference signal of the access network device, including: obtaining the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the neighboring cell.

[0769] For implementation method 2

[0770] The first receiving module 1510 is configured to receive a second measurement result sent by a second communication node.

[0771] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The second measurement result is a measurement result of the access network device on the uplink reference signal of the associated UE.

[0772] In some embodiments, the access network device corresponding to the serving cell and the access network device corresponding to the neighboring cell perform measurements to obtain corresponding measurement results. Optionally, the second measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the uplink reference signal of the serving cell and / or the neighboring cell.

[0773] In some embodiments, according to the reporting configuration in the measurement configuration, the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell can send the measurement results to the core network device, and the core network device receives the second measurement results sent by the access network device.

[0774] In some embodiments, the first communication device is an access network device, and the second communication node is a terminal device. The second measurement result is a measurement result of a sidelink reference signal associated with the UE and the terminal device. In some embodiments, the terminal device obtains the second measurement result after performing a sidelink reference signal measurement. Optionally, the second measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0775] Optionally, the measurement configuration is event-triggered reporting, and when the second measurement result meets the preset conditions, the second communication node immediately sends the second measurement result to the first communication device; or, the measurement configuration is periodic reporting, and the second communication node periodically sends the second measurement result to the first communication device at periodic time intervals.

[0776] The sending module is configured to send a measurement configuration of a second reference signal to the second communication node.

[0777] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal, and the measurement configuration of the second reference signal includes all or part of the information of the uplink reference signal measurement performed by the access network device.

[0778] In some embodiments, the access network device is an access network device corresponding to a neighboring cell.

[0779] In some embodiments, the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell and the measurement configuration determined by the access network device corresponding to the serving cell are the same measurement configuration, or the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell and the measurement configuration determined by the access network device corresponding to the serving cell are not the same measurement configuration.

[0780] When the measurement configuration of the uplink reference signal sent by the core network device to the access network device corresponding to the neighboring cell is not the same as the measurement configuration determined by the access network device corresponding to the serving cell, the core network device needs to send the measurement configuration of the uplink reference signal to the access network device corresponding to the serving cell.

[0781] In some embodiments, the first communication device is an access network device, the second communication node is a terminal device, the second reference signal is a sidelink reference signal, and the sidelink reference signal measurement configuration is a sidelink reference signal measurement configuration associated with the UE and the terminal device.

[0782] In some embodiments, the access network apparatus provides a measurement configuration of a sidelink reference signal to the terminal device, including the access network apparatus providing a measurement configuration for sidelink reference signal transmission with an associated UE to the terminal device.

[0783] A sending module is used to send a sending configuration of a second reference signal to an associated UE through a second communication node.

[0784] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal, which is used to send the first information to the core network device after being measured by the access network device corresponding to the serving cell.

[0785] In some embodiments, the core network device sends an uplink reference signal transmission configuration to the associated UE through the access network device, and provides the associated UE with a set of parameters and settings for guiding the associated UE to send the uplink reference signal.

[0786] The transmission configuration may include at least one of the time-frequency resource position, frequency domain resource position, transmission period, and type of the uplink reference signal.

[0787] An acquisition module is used to obtain the configuration of the time-frequency resources of the second reference signal from the second communication node.

[0788] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The second reference signal is an uplink reference signal. In some embodiments, the access network device corresponding to the serving cell determines the configuration of time-frequency resources for the uplink reference signal based on the current network status and resource conditions.

[0789] In some embodiments, the access network device corresponding to the serving cell sends the configuration of the time-frequency resources of the uplink reference signal to the core network device, the core network device receives the configuration of the time-frequency resources of the uplink reference signal, and sends the configuration of the time-frequency resources of the uplink reference signal to the associated UE and / or the access network device corresponding to the neighboring cell.

[0790] In some embodiments, the configuration of the time-frequency resource of the uplink reference signal includes at least one of a measurement configuration, a measurement amount, a measurement period, a reporting configuration, etc. of the uplink reference signal.

[0791] In some embodiments, the first communication device is an access network device, and the second communication node is a terminal device. The access network device determines a configuration of time-frequency resources for a sidelink reference signal. The configuration of the time-frequency resources for the sidelink reference signal includes at least one of a time domain resource location, a frequency domain resource location, and a spatial domain resource location of the sidelink reference signal.

[0792] The sending module is configured to send a second request to the second communication node.

[0793] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The second request is used to request configuration of time-frequency resources for an uplink reference signal.

[0794] In some embodiments, the core network device sends a second request to the access network device corresponding to the serving cell.

[0795] In some embodiments, the second request is used to request the access network device corresponding to the serving cell to provide the configuration of time-frequency resources for an uplink reference signal, wherein the uplink reference signal is a reference signal sent by the associated UE to the access network device.

[0796] In some embodiments, the uplink reference signal may be at least one of an uplink sensing reference signal, an SRS, a DM-RS, and other reference signals.

[0797] In some embodiments, by sending a second request to the access network device corresponding to the serving cell, the core network device obtains the configuration information of the time-frequency resources of the uplink reference signal, so that the core network device can correctly instruct the associated UE to send the uplink reference signal at the appropriate time-frequency resource position and frequency domain resource position. The core network device can perform at least one of scheduling, optimization, correction and supplementation based on the configuration information of the time-frequency resources, thereby generating a measurement configuration of the uplink reference signal.

[0798] The first receiving module 1510 is configured to receive a second response sent by the second communication node.

[0799] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The second response includes the configuration of time-frequency resources of the uplink reference signal.

[0800] In some embodiments, after the access network device corresponding to the serving cell receives the second request sent by the core network device, the access network device corresponding to the serving cell may send a second response to the core network device. The access network device corresponding to the serving cell may determine the configuration of time-frequency resources for the uplink reference signal based on the current network status and resource conditions, and the access network device corresponding to the serving cell may send the configuration of these time-frequency resources back to the core network device as the second response.

[0801] For implementation method three

[0802] The first receiving module 1510 is configured to receive handover indication information sent by the second communication node, where the handover indication information is used to indicate relevant information of a cell handover event associated with the UE.

[0803] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The access network device includes a source access network device and / or a target access network device, and the handover indication information includes first handover indication information and second handover indication information.

[0804] The first receiving module 1510, the second communication node includes a source access network, and is used for the first communication device to receive the first switching indication information sent by the source access network device.

[0805] The first switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0806] In an optional example, the first switching indication information includes at least one of the following information:

[0807] UE identity of the associated UE;

[0808] The cell ID of the target cell;

[0809] The session identifier of the awareness session associated with the associated UE.

[0810] In some embodiments, the first handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the first communication device can identify the associated UE and perform corresponding processing.

[0811] In some embodiments, the first handover indication information includes a cell identifier of a target cell. The cell identifier of the target cell is identification information indicating the target cell to which the associated UE is to handover. The cell identifier of the target cell may be at least one of a CGI, a PCI, etc. Through the target cell identifier, the first communications device may know to which cell the associated UE is about to handover, and may make corresponding handover decisions and configuration updates.

[0812] In some embodiments, the first switching indication information includes a session identifier of a perception session associated with the associated UE, where the session identifier of the perception session associated with the associated UE is information used to identify sessions of different perception services, such as a Sensing Session ID. Through the session identifier of the perception session, the first communication device can associate the switching indication with the perception service and perform corresponding processing.

[0813] In some embodiments, the first communication device receives a first switching indication message sent by the target access network device. The first switching indication message is used to indicate that a cell switching has occurred in a UE associated with the first communication device, and the associated UE switches from a source cell to a target cell (i.e., a serving cell switches to a neighboring cell). The first switching indication information assists the first communication device in making a perception node switching decision and ensures the smooth progress of the switching process.

[0814] The first receiving module 1510, the second communication node includes a target access network device, and is configured to receive second switching indication information sent by the target access network device.

[0815] The second switching indication information is used to indicate relevant information of a cell switching event associated with the UE.

[0816] In an optional example, the second switching indication information includes at least one of the following information:

[0817] UE identity of the associated UE;

[0818] The cell ID of the source cell;

[0819] The session identifier of the awareness session associated with the associated UE.

[0820] In some embodiments, the second handover indication information includes a UE identifier of the associated UE. The UE identifier of the associated UE is information used to uniquely identify the associated UE. The UE identifier may be at least one of an application layer identifier, SUPI, SUCI, 5G-GUTI, etc. of the associated UE. Through the UE identifier of the associated UE, the first communication device can identify the associated UE and perform corresponding processing.

[0821] In some embodiments, the second handover indication information includes a cell identifier of a source cell, where the cell identifier of the source cell is identification information indicating the source cell before the associated UE is handed over, and the cell identifier of the source cell may be at least one of a CGI, a PCI, etc. The first communications device may use the cell identifier of the source cell to determine the cell in which it was located before the handover, and perform a configuration update on the serving cell after the handover.

[0822] In some embodiments, the second switching indication information includes a session identifier of a sensing session associated with the associated UE, where the session identifier of the sensing session associated with the associated UE is information used to identify sessions of different sensing services, such as a Sensing Session ID. Through the session identifier of the sensing session, the first communication device can associate the switching indication with the sensing service and perform corresponding processing.

[0823] In some embodiments, the first communication device receives second switching indication information sent by the target access network device, and the second switching indication information is used to indicate that a cell switching has occurred in the UE associated with the first communication device, and the associated UE switches from the source cell to the target cell (i.e., the serving cell switches to the neighboring cell). The second switching indication information assists the first communication device in making perception node switching decisions and ensures the smooth progress of the switching process.

[0824] The sending module is used to send a third request to the second communication node, where the third request is used to request the second communication node to report switching indication information.

[0825] In some embodiments, the first communication device is a core network device, and the second communication node is an access network device. The third request is used to instruct the source access network device to provide the first communication device with the auxiliary information required for the handover awareness node.

[0826] In some embodiments, after the source access network device receives the third request sent by the first communication device, that is, after the source access network device receives the downlink reference signal request message sent by the first communication device, it will provide the first communication device with auxiliary information for sensing node switching.

[0827] In some embodiments, the auxiliary information may include at least one of the following information:

[0828] Handover type: indicates the type of handover, such as sensor node handover;

[0829] Handover target: indicates the target sensing node (target access network device) for handover;

[0830] Switching parameters: Contains the parameters required for switching, such as switching trigger conditions, switching timing, etc.

[0831] The first receiving module 1510 is configured to receive capability information reported by the associated UE, where the capability information is used to indicate whether the associated UE supports the capability associated with the first information.

[0832] In some embodiments, the first communication device is a core network device.

[0833] In some embodiments, the capability information includes the associated UE's measurement capability of downlink reference signals. Specifically, the capability information includes the associated UE's measurement capability of downlink reference signals sent by the serving base station corresponding to the current serving cell and the measurement capability of downlink reference signals sent by the neighboring base station corresponding to the neighboring cell.

[0834] In some embodiments, the capability information includes the associated UE's ability to transmit an uplink reference signal. For example, the associated UE may report its own measurement of the uplink reference signal or the downlink reference signal to the first communications device, and report the measurement results to the first communications device. The measurement results may be provided to the first communications device as a basis for determining the continuity of the sensing service, so that the first communications device can switch the sensing node according to specific circumstances.

[0835] The sending module is used to send a request for reporting capability information to the associated UE.

[0836] The first receiving module 1510 is configured to receive at least one of the following information:

[0837] First indication information, where the first indication information is used to indicate whether a sensing service associated with a sensing target needs to ensure the continuity of the sensing service;

[0838] Second indication information, where the second indication information is used to indicate that the sensing target is an active sensing target;

[0839] The identification information of the associated UE.

[0840] To sum up, the first communication device provided in the embodiment of the present application determines the switching of the perception node based on the first information sent by the associated UE and the second communication node received by the first communication device, and according to the content of the first information, wherein the perception node is used to perform perception services on the perception targets corresponding to the associated UE, ensuring that the perception targets can be uniquely identified when they are switched between different perception nodes, thereby maintaining the continuity of the perception services.

[0841] Associated UE device side

[0842] FIG23 shows a block diagram of a device for executing a sensing service provided by an exemplary embodiment of the present application. The device 1600 has the function of implementing the above-mentioned method for executing a sensing service. The device may include: a second sending module 1610;

[0843] The second sending module 1610 is configured to send first information to the first communication node.

[0844] The first information is used to assist the first communication node in determining or deciding whether to switch the sensing node. The first information is reference information used to assist the first communication node in deciding whether the sensing node of the sensing target needs to be switched. In some embodiments, the first information includes mobility information about the sensing target.

[0845] In some embodiments, the sensing node is used to perform a sensing service on a sensing target corresponding to the device, and the communication range of the second communication node and the communication range of the device intersect. The device refers to a terminal device associated with the sensing target.

[0846] In some embodiments, the device provides the first communication node with relevant information about the mobility of the sensing target by sending first information to the first communication node.

[0847] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The access network device is associated with a serving cell and / or a neighboring cell of the apparatus.

[0848] Optionally, the first message includes the measurement results of the downlink reference signals of the serving cell and / or the neighboring cell, and the device sends the first message to the core network device, including the measurement results of the downlink reference signals of the serving cell and / or the neighboring cell sent by the device to the access network device.

[0849] In some embodiments, a downlink reference signal is a signal sent by a base station to a device for transmitting data and providing related services. The device can evaluate the signal conditions of its serving cell and / or neighboring cells by measuring the strength, quality, and other parameters of the downlink reference signal.

[0850] In some embodiments, the apparatus transmits the first measurement result to the core network device, and the apparatus may provide the core network device with information about the signal conditions of the serving cell and / or neighboring cells. The first measurement result may be used to assist the core network device in determining the handover of the sensing node to ensure continuous execution and effective coverage of the sensing service.

[0851] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The apparatus sends a first message to the access network device. The first message includes a measurement result of a sidelink reference signal. The first message includes the measurement result of the sidelink reference signal of the apparatus.

[0852] The second sending module 1610 is configured to send the first measurement result to the first communication node.

[0853] In some embodiments, the first communication node is a core network device, wherein the first measurement result is a measurement result of a downlink reference signal of a serving cell and / or a neighboring cell.

[0854] In some embodiments, the device obtains a first measurement result after performing downlink reference signal measurement. Optionally, the first measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the downlink reference signal of the serving cell and / or the neighboring cell.

[0855] The device can report its own measurement results of the downlink reference signal to the access network equipment, which then reports the measurement results to the core network equipment. The measurement results can be provided to the core network equipment as a basis for determining the continuity of the perceived service.

[0856] In some embodiments, the first communication node is an access network device. The first measurement result is a measurement result of a sidelink reference signal between the device and the terminal device. In some embodiments, the device obtains the first measurement result after performing a sidelink reference signal measurement. Optionally, the first measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0857] In some embodiments, the apparatus may transmit the first measurement result to the first communication node according to a reporting configuration in the measurement configuration. Optionally, the measurement configuration may be event-triggered reporting, in which case the apparatus transmits the first measurement result to the first communication node when the first measurement result satisfies a preset condition; or the measurement configuration may be periodic reporting, in which case the apparatus may transmit the first measurement result to the first communication node at periodic intervals.

[0858] In some embodiments, the apparatus further comprises a receiving module.

[0859] a receiving module, configured to receive a measurement configuration of a first reference signal sent by a first communication node;

[0860] In some embodiments, the first communication node is a core network device, and the second communication node is an access network device. The first reference signal is a downlink reference signal. The downlink reference signal measurement configuration is a downlink reference signal measurement configuration of a serving cell and / or a neighboring cell, and serving cell and / or neighboring cell measurements are performed to ensure continuity of sensing services.

[0861] The core network device provides the device with the measurement configuration of the downlink reference signal, including the measurement configuration of the downlink reference signal of the access network device corresponding to the serving cell and / or the measurement configuration of the downlink reference signal of the access network device corresponding to the neighboring cell sent by the core network device to the device.

[0862] In some embodiments, the first communication node is an access network device, and the second communication node is a terminal device. The first reference signal is a side reference signal. The measurement configuration of the side reference signal is the measurement configuration of the side reference signal between the device and the terminal device. In some embodiments, the access network device provides the device with the measurement configuration of the side reference signal, including the access network device providing the device with the measurement configuration of the terminal device that transmits the side reference signal to the device. In some embodiments, the measurement configuration of the first reference signal is generated based on the configuration of the above-mentioned time-frequency resources. The measurement configuration of the first reference signal is the same as the configuration of the above-mentioned time-frequency resources, or the measurement configuration of the first reference signal is a subset of the configuration of the above-mentioned time-frequency resources, or the configuration of the above-mentioned time-frequency resources is a subset of the measurement configuration.

[0863] In some embodiments, the measurement configuration of the first reference signal includes, in addition to at least one of a time domain resource location, a frequency domain resource location, and a spatial domain resource location, at least one of a measurement quantity of the first reference signal, a measurement period, and a reporting configuration. In some embodiments, the apparatus further includes a reporting module.

[0864] The reporting module is used to report capability information to the first communication node, where the capability information is used to indicate whether the device supports the capability associated with the first information.

[0865] In some embodiments, the first communication node is a core network device.

[0866] In some embodiments, the capability information includes the device's capability to measure downlink reference signals. Optionally, the capability information includes: the device's capability to measure downlink reference signals sent by a serving base station corresponding to a current serving cell, and / or the device's capability to measure downlink reference signals sent by a neighboring base station corresponding to a neighboring cell.

[0867] In some embodiments, the capability information includes the device's ability to send uplink reference signals, and the sending capability includes: whether to support the sending of uplink reference signals, what type of uplink reference signals are supported, the frequency range supported for sending, and at least one of the maximum sending power supported.

[0868] In some embodiments, the first communication node is an access network device. The capability information includes the device's ability to measure sidelink reference signals. Optionally, the capability information includes the device's ability to measure sidelink reference signals sent by a terminal device, and / or the capability information includes the device's ability to send sidelink reference signals. Optionally, the capability information includes the device's ability to send sidelink reference signals to a terminal device.

[0869] The receiving module is configured to receive a capability information reporting request sent by the first communication node.

[0870] The second sending module 1610 is configured to send at least one of the following information:

[0871] First indication information, where the first indication information is used to indicate whether a sensing service associated with a sensing target needs to ensure the continuity of the sensing service;

[0872] Second indication information, where the second indication information is used to indicate that the sensing target is an active sensing target;

[0873] Identification information of the device.

[0874] FIG24 shows a block diagram of a device for executing a sensing service provided by an exemplary embodiment of the present application. The device 1700 has the function of implementing the above-mentioned method for executing a sensing service. The device may include: a second receiving module 1710;

[0875] The second receiving module 1710 is configured to receive a sending configuration of a second reference signal sent by the first communication node.

[0876] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the second reference signal is an uplink reference signal.

[0877] The uplink reference signal is used to send the first information to the core network device after being measured by the access network device.

[0878] In some embodiments, the uplink reference signal is a signal sent by the apparatus to an access network device for transmitting data and providing related services.

[0879] In some embodiments, the core network device provides a set of parameters and settings to the apparatus by sending a transmission configuration of an uplink reference signal, for guiding the apparatus to send an uplink reference signal.

[0880] In some embodiments, the apparatus receives and applies the uplink reference signal transmission configuration sent by the core network device. The apparatus configures and adjusts its own uplink reference signal transmission method based on the parameters and settings provided by the core network device.

[0881] In some embodiments, the apparatus sends an uplink reference signal to the access network device. The access network device measures and evaluates the received uplink reference signal sent by the apparatus, and then sends the measurement result to the core network device as the first information.

[0882] In some embodiments, the device receives an uplink reference signal transmission configuration from a core network device and transmits the uplink reference signal according to the transmission configuration. The access network device measures the strength, quality, and other parameters of the uplink reference signal and transmits the measurement results to the core network device. The measurement results are used to provide information about the signal conditions at the device's location.

[0883] In some embodiments, the apparatus further comprises a sending module.

[0884] The sending module is configured to send the second reference signal based on the sending configuration of the second reference signal.

[0885] In some embodiments, the first communication node is a core network device, the second communication node is an access network device, and the second reference signal is an uplink reference signal.

[0886] The uplink reference signal is used to send the first information to the core network device after being measured by the access network device.

[0887] In some embodiments, the core network device sends an uplink reference signal transmission configuration to the apparatus through the access network device, and provides the apparatus with a set of parameters and settings for guiding the apparatus to send an uplink reference signal.

[0888] In some embodiments, after receiving the activation indication forwarded by the access network device corresponding to the serving cell, the apparatus transmits the uplink reference signal according to the time domain resource position in the configuration information of the uplink reference signal.

[0889] To sum up, the device provided in the embodiment of the present application sends first information to the first communication node, or the device receives the sending configuration of the second reference signal sent by the core network device, and the second reference signal is used to be measured by the second communication node and then send the first information to the first communication node, wherein the first information is used to assist the first communication node in determining the switching of the perception node; after the first communication node receives the first information sent by the device, it determines the switching of the perception node according to the content of the first information, wherein the perception node is used to perform perception services on the perception target corresponding to the device, ensuring that the perception target can uniquely identify the perception target when it switches between different perception nodes, and maintaining the continuity of the perception service.

[0890] Second communication device side

[0891] FIG25 shows a block diagram of a second communication device provided by an exemplary embodiment of the present application. The device 1800 has the function of implementing the above-mentioned method for executing the sensing service. The second communication device may include: a third sending module 1810;

[0892] The third sending module 1810 is configured to send a first reference signal.

[0893] In some embodiments, the first communication node is a core network device, the second communication device is an access network device, and the first reference signal is a downlink reference signal.

[0894] The downlink reference signal is used to transmit first information to the core network device after being measured by the associated UE. The first information is reference information used to assist the core network device in deciding whether a sensing node for a sensing target needs to be switched. In some embodiments, the first information includes mobility information about the sensing target.

[0895] In some embodiments, a downlink reference signal is a signal sent by an access network device to an associated UE for transmitting data and providing related services.

[0896] In some embodiments, the associated UE may measure the received downlink reference signal. Optionally, the associated UE may measure parameters such as RSRP, RSRQ, and SINR of the downlink reference signal. The measurement results may help the associated UE evaluate the quality and performance of the downlink reference signal.

[0897] In some embodiments, the associated UE sends first information to the core network device, the first information providing feedback from the associated UE on a downlink reference signal. The first information can help the core network device understand the status of the associated UE receiving the downlink reference signal, so that the core network device can perform corresponding optimization and adjustment.

[0898] In some embodiments, the first communication node is an access network device, the second communication device is a terminal device, and the first reference signal is a sidelink reference signal. A sidelink reference signal is a reference signal used to measure the channel state between the terminal device and an associated UE. The sidelink reference signal is used by the associated UE to transmit first information to the access network device after measurement. The first information is reference information used to assist the access network device in determining whether a handover of a sensing node for a sensing target is required.

[0899] The third sending module 1810 is configured to send first information to the first communication node.

[0900] The first information is used to assist the core network device in determining the switching of the perception node. The first information includes relevant data or requests about the perception service. The perception node is used to perform the perception service for the perception target corresponding to the associated UE.

[0901] In some embodiments, the first communication node is a core network device, the second communication device is an access network device, and the access network device is associated with a serving cell and / or a neighboring cell of the associated UE. In some embodiments, the access network device provides the core network device with relevant information related to the execution of the sensing service by sending the first information to the core network device.

[0902] Optionally, the first message includes the measurement result of the uplink reference signal sent by the associated UE, and the access network device sends the first message to the core network device, including the access network device sending the measurement result of the uplink reference signal sent by the associated UE to the core network device.

[0903] In some embodiments, an access network device sends first information to a core network device. The first information may include information related to the mobility of a sensing target, such as location information of an associated UE. The access network device communicates with the core network device and sends the first information to the core network device for the core network device to coordinate the execution of a sensing service. For example, the core network device determines switching of a sensing node based on the first information sent by the access network device.

[0904] In some embodiments, the first communication node is an access network device, and the second communication device is a terminal device. The first information is information sent by the associated UE to the access network device, or information sent by the terminal device to the access network device. The first information includes a measurement result of a sidelink reference signal. The first information includes the measurement result of the sidelink reference signal of the associated UE and / or the measurement result of the sidelink reference signal of the terminal device.

[0905] For implementation method one

[0906] In some embodiments, the second communication device further includes a providing module.

[0907] A module is provided for providing a configuration of time-frequency resources of a first reference signal to a first communication node.

[0908] In some embodiments, the first communication node is a core network device, the second communication device is an access network device, and the first reference signal is a downlink reference signal.

[0909] In some embodiments, the access network device determines the configuration of time-frequency resources for the downlink reference signal based on the current network status and resource availability, namely, determining at least one of the time domain resource location, frequency domain resource location, and spatial domain resource location of the downlink reference signal. Optionally, the time-frequency resource configuration also includes a reporting configuration. The access network device includes the time-frequency resource configuration in a first response and returns it to the core network device.

[0910] In some embodiments, the access network device determines the configuration of the time-frequency resources of the downlink reference signal, including the access network device corresponding to the serving cell determining the configuration of the time-frequency resources of the downlink reference signal and / or the access network device corresponding to the neighboring cell determining the configuration of the time-frequency resources of the downlink reference signal.

[0911] In some embodiments, the access network device provides the core network equipment with the configuration of the time-frequency resources of the downlink reference signal, including providing the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the access network device corresponding to the neighboring cell.

[0912] In some embodiments, the second communication device further includes a receiving module.

[0913] The receiving module is configured to receive a first request sent by a first communication node.

[0914] In some embodiments, the first communication node is a core network device, and the second communication device is an access network device. The first request is used to request configuration of time-frequency resources for a downlink reference signal.

[0915] In some embodiments, the access network device receives the first request sent by the core network device, including: the core network sends the first request to the access network device corresponding to the serving cell and / or the access network device corresponding to the neighboring cell.

[0916] The first request is used to request configuration of time-frequency resources of a downlink reference signal.

[0917] In some embodiments, the downlink reference signal may be at least one of reference signals such as DL Sensing RS, PRS, SSB or CSI-RS.

[0918] The third sending module 1810 is configured to send a first response to the first communication node.

[0919] In some embodiments, the first communication node is a core network device, and the second communication device is an access network device. The first response includes: configuration of time-frequency resources of a downlink reference signal.

[0920] In some embodiments, the second communication device sends a first response to the core network device, that is, sends the configuration of the time-frequency resources of the downlink reference signal to the core network device, including: the configuration of the time-frequency resources of the downlink reference signal of the second communication device corresponding to the serving cell and / or the configuration of the time-frequency resources of the downlink reference signal of the second communication device corresponding to the neighboring cell.

[0921] For implementation method 2

[0922] The third sending module 1810 is configured to send the second measurement result to the first communication node.

[0923] In some embodiments, the first communication node is a core network device, and the second communication device is an access network device. The second measurement result is a measurement result of the access network device on the uplink reference signal of the associated UE.

[0924] In some embodiments, the access network device obtains corresponding measurement results after performing the measurement. Optionally, the second measurement result may include at least one of RSRP, RSRQ, SINR, etc. of the uplink reference signal of the serving cell and / or the neighboring cell.

[0925] In some embodiments, the first communication node is an access network device, and the second communication device is a terminal device. The second measurement result is a measurement result of a sidelink reference signal associated with the UE and the terminal device. Optionally, the second measurement result may include at least one of a frequency band, subcarrier spacing, and waveform of the sidelink reference signal.

[0926] In some embodiments, according to the reporting configuration in the measurement configuration, the second communication device may send the measurement result to the first communication node, and the first communication node receives the second measurement result sent by the second communication device.

[0927] Optionally, the measurement configuration is event-triggered reporting, and when the second measurement result meets the preset conditions, the second communication device immediately sends the second measurement result to the first communication node; or, the measurement configuration is periodic reporting, and the second communication device periodically sends the second measurement result to the first communication node at periodic time intervals.

[0928] The receiving module is configured to receive a measurement configuration of a second reference signal sent by the first communication node.

[0929] In some embodiments, the first communication node is a core network device, the second communication device is an access network device, the second reference signal is an uplink reference signal, and the uplink reference signal measurement configuration includes all information for the access network device to perform uplink reference signal measurement.

[0930] In some embodiments, the access network device is an access network device corresponding to a neighboring cell.

[0931] In some embodiments, the first communication node is an access network device, and the second communication device is a terminal device. The second reference signal is a sidelink reference signal. The measurement configuration of the sidelink reference signal is the measurement configuration of the sidelink reference signal associated with the UE and the terminal device. In some embodiments, the second communication device receives the measurement configuration of the second reference signal sent by the first communication node, and the measurement configuration of the second reference signal is the same as the configuration of the time-frequency resource described above, or the measurement configuration of the second reference signal is a subset of the configuration of the time-frequency resource described above, or the configuration of the time-frequency resource described above is a subset of the measurement configuration.

[0932] In some embodiments, the measurement configuration of the second reference signal includes at least one of a measurement amount, a measurement period, a reporting configuration, etc. of the second reference signal in addition to at least one of a time domain resource position, a frequency domain resource position, and a spatial domain resource position.

[0933] A module is provided for providing a configuration of time-frequency resources of a second reference signal to the first communication node.

[0934] In some embodiments, the first communication node is a core network device, and the second communication device is an access network device. The second reference signal is an uplink reference signal. The access network device determines a configuration of time-frequency resources for the uplink reference signal and provides the configuration of the time-frequency resources for the uplink reference signal to the core network device.

[0935] In some embodiments, the configuration of the time-frequency resource of the uplink reference signal includes at least one of a measurement configuration, a measurement amount, a measurement period, a reporting configuration, etc. of the uplink reference signal.

[0936] Optionally, the access network device refers to an access network device corresponding to the serving cell. In some embodiments, the access network device corresponding to the serving cell determines the configuration of time-frequency resources of the uplink reference signal according to the current network status and resource conditions.

[0937] In some embodiments, the access network device corresponding to the serving cell sends the configuration of the time-frequency resources of the uplink reference signal to the core network device, the core net...

Claims

1. A method for executing a sensing service, characterized in that The method is executed by a first communication node, and the method includes: Receiving first information sent by an associated UE or a second communication node; Determining a handover of a sensing node based on the first information, where the sensing node is used to perform sensing services on a sensing target corresponding to the associated UE, and there is an intersection between the communication range of the second communication node and the communication range of the associated UE.

2. The method according to claim 1, wherein The receiving the first information sent by the associated UE includes: Receiving a first measurement result sent by the associated UE, where the first measurement result is a measurement result of a first reference signal sent by the second communication node.

3. The method according to claim 2, wherein The method further includes: Sending a measurement configuration of the first reference signal to the associated UE.

4. The method according to claim 3, wherein The method further includes: Obtaining a configuration of time-frequency resources of the first reference signal from the second communication node.

5. The method according to claim 4, wherein The obtaining the configuration of time-frequency resources of the first reference signal from the second communication node includes: Sending a first request to the second communication node, where the first request is used to request the configuration of time-frequency resources of the first reference signal; Receiving a first response sent by the second communication node, where the first response is used to indicate the configuration of time-frequency resources of the first reference signal.

6. The method according to claim 1, characterized in that, The receiving the first information sent by the second communication node includes: Receiving a second measurement result sent by the second communication node, where the second measurement result is a measurement result of a second reference signal sent by the associated UE.

7. The method according to claim 6, characterized in that, The method further includes: Sending a measurement configuration of the second reference signal to the second communication node.

8. The method according to claim 6, characterized in that, The method further includes: Sending a transmission configuration of the second reference signal to the associated UE.

9. The method according to claim 7 or 8, characterized in that, The method further includes: Obtaining a configuration of time-frequency resources of the second reference signal from the second communication node.

10. The method according to claim 9, wherein The obtaining the measurement configuration of time-frequency resources of the second reference signal from the second communication node includes: Sending a second request to the second communication node, where the second request is used to request the configuration of time-frequency resources of the second reference signal; Receiving a second response sent by the second communication node, where the second response is used to indicate the configuration of time-frequency resources of the second reference signal.

11. The method according to claim 1, characterized in that The receiving the first information sent by the second communication node includes: Receiving handover indication information sent by the second communication node, where the handover indication information is used to indicate information related to a cell handover event of the associated UE.

12. The method according to claim 11, characterized in that The second communication node includes at least one of a source access network device and a target access network device, and the receiving the handover indication information sent by the second communication node includes at least one of the following: Receiving first handover indication information sent by the source access network device; Receiving second handover indication information sent by the target access network device.

13. The method according to claim 12, characterized in that, The first handover indication information includes at least one of the following information: A UE identifier of the associated UE; A cell identifier of a target cell; A session identifier of a sensing session associated with the associated UE.

14. The method according to claim 12, wherein The second handover indication information includes at least one of the following information: A UE identifier of the associated UE; A cell identifier of a source cell; A session identifier of a sensing session associated with the associated UE.

15. The method according to any one of claims 11 to 14, characterized in that The method further includes: Send a third request to the second communication device, where the third request is used to request the second communication device to report the handover indication information. Information.

16. The method according to any one of claims 1 to 15, characterized in that, The method further includes: Receive the capability information reported by the associated UE, where the capability information is used to indicate whether the associated UE supports the capability associated with the first information.

17. The method according to claim 16, wherein The method further includes: Send a reporting request for the capability information to the associated UE.

18. The method according to any one of claims 1 to 15, characterized in that, The method further includes: Receive at least one of the following information: First indication information, where the first indication information is used to indicate whether the sensing service associated with the sensing target needs to ensure the continuity of the sensing service; Second indication information, where the second indication information is used for the sensing target to be an active sensing target; The identification information of the associated UE.

19. The method according to any one of claims 1 to 18, characterized in that, The first communication node is a core network device, the second communication node is an access network device, and / or, the first communication node is an access network device, and the second communication node is a terminal device.

20. A method for executing a sensing service, characterized in that, The method is executed by an associated UE, and the method includes: Send the first information to the first communication node; or, Receive the transmission configuration of the second reference signal sent by the first communication node, where the second reference signal is used to be measured by the second communication node and then send the first information to the first communication node; Wherein, the first information is used to assist the first communication node to determine the handover of the sensing node, the sensing node is used to perform a sensing service on the sensing target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE.

21. The method according to claim 20, wherein The sending the first information to the first communication node includes: Send a first measurement result to the first communication node, where the first measurement result is the measurement result of the first reference signal of the serving cell and / or neighboring cells of the associated UE.

22. The method according to claim 21, wherein The method further includes: Receive the measurement configuration of the first reference signal sent by the first communication node.

23. The method according to claim 20, wherein The method further includes: Send the second reference signal based on the transmission configuration of the second reference signal.

24. The method according to any one of claims 20 to 23, characterized in that, The method further includes: Report the capability information to the first communication node, where the capability information is used to indicate whether the associated UE supports the capability associated with the first information.

25. The method according to claim 24, characterized in that, The method further includes: Receive the reporting request for the capability information sent by the first communication node.

26. The method according to any one of claims 20 to 23, characterized in that, The method further includes: Send at least one of the following information: First indication information, where the first indication information is used to indicate whether the sensing service associated with the sensing target needs to ensure the continuity of the sensing service; Second indication information, where the second indication information is used for the sensing target to be an active sensing target; The identification information of the associated UE.

27. The method according to any one of claims 20 to 26, characterized in that, The first communication node is a core network device, the second communication node is an access network device, and / or, the first communication node is an access network device, and the second communication node is a terminal device.

28. A method for executing a perception service, characterized in that, The method is executed by a second communication node, and the method includes: Send a first reference signal, where the first reference signal is used to be measured by the associated UE and then send the first information to the first communication node; or, Send the first information to the first communication node; Among them, the first information is used to assist the first communication node in determining the handover of the sensing node, the sensing node is used to perform sensing services on the sensing target corresponding to the associated UE, and the communication range of the second communication node intersects with the communication range of the associated UE.

29. The method according to claim 28, wherein The method further includes: Providing the first communication node with the configuration of the time-frequency resources of the first reference signal.

30. The method according to claim 29, wherein The providing the configuration of the time-frequency resources of the first reference signal to the core network device includes: Receiving a first request sent by the first communication node, where the first request is used to request the configuration of the time-frequency resources of the first reference signal; Configuring; Sending a first response to the first communication node, where the first response is used to indicate the configuration of the time-frequency resources of the first reference signal.

31. The method according to claim 28, wherein The sending the first information to the first communication node includes: Sending a second measurement result to the first communication node, where the second measurement result is the measurement result of the second reference signal sent by the associated UE.

32. The method according to claim 31, wherein The method further includes: Receiving the measurement configuration of the second reference signal sent by the first communication node.

33. The method according to claim 32, wherein The method further includes: Providing the first communication node with the configuration of the time-frequency resources of the second reference signal.

34. The method according to claim 33, wherein, The providing the configuration of the time-frequency resources of the second reference signal to the first communication node includes: Receiving a second request sent by the first communication node, where the second request is used to request the configuration of the time-frequency resources of the second reference signal; Sending a second response to the first communication node, where the second response is used to indicate the configuration of the time-frequency resources of the second reference signal.

35. The method according to claim 28, wherein The sending the first information to the first communication node includes: Sending handover indication information to the first communication node, where the handover indication information is used to indicate information related to the cell handover event of the associated UE.

36. The method according to claim 35, characterized in that, The second communication node includes a source access network device and / or a target access network device; The sending the handover indication information to the first communication node includes at least one of the following: The source access network device sends first handover indication information to the first communication node; The target access network device sends second handover indication information to the first communication node.

37. The method according to claim 36, wherein The first handover indication information includes at least one of the following information: The UE identifier of the associated UE; The cell identifier of the target cell; The session identifier of the sensing session associated with the associated UE.

38. The method according to claim 36, wherein The second handover indication information includes at least one of the following information: The UE identifier of the associated UE; The cell identifier of the source cell; The session identifier of the sensing session associated with the associated UE.

39. The method according to any one of claims 35 to 38, characterized in that, The method further includes: Receiving a third request sent by the first communication node, where the third request is used to request the second communication node to report the handover indication information.

40. The method according to any one of claims 28 to 39, characterized in that The first communication node is a core network device, the second communication node is an access network device, and / or, the first communication node is an access network device, and the second communication node is a terminal device.

41. An execution device for a sensing service, characterized in that The apparatus includes: A first receiving module, configured to receive the first information sent by the associated UE or the second communication node; A first switching module, configured to determine the switching of a sensing node based on the first information, where the sensing node is used to perform a sensing service on a sensing target corresponding to the associated UE, and there is an intersection between the communication range of the second communication node and the communication range of the associated UE.

42. An execution device for a sensing service, characterized in that, The apparatus includes: A second sending module, configured to send the first information to a first communication node; or, A second receiving module, configured to receive the sending configuration of a second reference signal sent by the first communication node, where the second reference signal is used to be measured by a second communication node and then send the first information to the first communication node; Wherein, the first information is used to assist the core network device to determine the switching of the sensing node, the sensing node is used to perform a sensing service on a sensing target corresponding to the associated UE, and there is an intersection between the communication range of the second communication node and the communication range of the associated UE.

43. An execution device for a sensing service, characterized in that, The apparatus includes: A third sending module, configured to send a first reference signal, where the first reference signal is used to be measured by an associated UE and then send the first information to a first communication node; or, configured to send the first information to the first communication node; Wherein, the first information is used to assist the first communication node to determine the switching of the sensing node, the sensing node is used to perform a sensing service on the sensing target corresponding to the associated UE, and there is an intersection between the communication range of the second communication node and the communication range of the associated UE.

44. A sensing device, characterized in that, The communication device includes a processor and a memory, where a computer program is stored in the memory, and the processor executes the computer program to implement the method for executing a sensing service according to any one of claims 1 to 19, or implement the method for executing a sensing service according to any one of claims 20 to 27, or implement the method for executing a sensing service according to any one of claims 28 to 40.

45. A computer-readable storage medium, characterized in that, A computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the method for executing a sensing service according to any one of claims 1 to 19, or implement the method for executing a sensing service according to any one of claims 20 to 27, or implement the method for executing a sensing service according to any one of claims 28 to 40.

46. A chip, characterized in that, The chip includes programmable logic circuits and / or program instructions, and when the chip runs, it is used to implement the method for executing a sensing service according to any one of claims 1 to 19, or implement the method for executing a sensing service according to any one of claims 20 to 27, or implement the method for executing a sensing service according to any one of claims 28 to 40.

47. A computer program product, characterized in that, The computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads and executes the computer instructions from the computer-readable storage medium to implement the method for executing a sensing service according to any one of claims 1 to 19, or implement the method for executing a sensing service according to any one of claims 20 to 27, or implement the method for executing a sensing service according to any one of claims 28 to 40.

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