Sensing node switching method, core network element, wireless access network node and terminal

Abstract

The invention provides a sensing node switching method, a core network element, a wireless access network node and a terminal, and relates to the technical field of communication. The method comprises the following steps: a first core network element receives sensing node switching related information; the first core network element determines a target sensing node according to the sensing node switching related information; and the first core network element executes a sensing node switching process for the target sensing node. According to the invention, the problem that the continuity of the sensing service cannot be ensured because the network side does not support reselection of the sensing node meeting the sensing requirement at present can be solved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a perception node switching method, a core network element, a wireless access network node and a terminal. Background Art

[0002] In order to ensure the continuity of the interawareness service, it may be necessary to switch the sensing node. For example, the sensing node can be a Radio Access Network (RAN) node, a terminal, etc. However, the current communication technology cannot support the network side to reselect a suitable sensing node that meets the sensing requirements, so it is impossible to ensure the continuity of the interawareness service by switching the sensing node. Summary of the invention

[0003] The present application provides a perception node switching method, a core network element, a wireless access network node and a terminal, which solves the problem that the current network side does not support reselection of a perception node that meets the perception requirements, and therefore cannot guarantee the continuity of the interawareness service.

[0004] An embodiment of the present application provides a sensing node switching method, including:

[0005] The first core network element receives information related to the switching of the sensing node;

[0006] The first core network element determines a target sensing node according to the sensing node switching related information;

[0007] The first core network element performs a perception node switching process for the target perception node.

[0008] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0009] Optionally, the sensing node switching related information includes at least one of the following:

[0010] The first indication information is used to indicate the switching perception node;

[0011] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0012] Perception information measurement report;

[0013] Identification information of the target sensing node;

[0014] Terminal mobility analysis information;

[0015] The location information of the terminal;

[0016] The terminal senses the contract information.

[0017] Optionally, the first core network element receives the information related to the sensor node switching, including at least one of the following:

[0018] The first core network element receives the sensing node switching related information sent by the source sensing RAN node or the terminal;

[0019] The first core network element receives the sensing node switching related information sent by the second core network element;

[0020] The first core network element receives the perception node switching related information sent by the third core network element.

[0021] Optionally, the perception node switching related information sent by the source perception RAN node or the terminal includes at least one of the following:

[0022] The first indication information is used to indicate a handover-aware RAN node;

[0023] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement;

[0024] Perception information measurement report;

[0025] identification information of the target sensing RAN node;

[0026] The source sensing RAN node provides the mobility analysis information of the sensing terminal;

[0027] The source senses the mobility analysis information of the sensed terminal provided by the RAN node.

[0028] Optionally, the sensing node switching related information sent by the second core network element includes: location information of the sensing terminal, and / or location information of the sensed terminal;

[0029] Optionally, the perception node switching related information sent by the third core network network element includes: mobility analysis information of the perception terminal, and / or mobility analysis information of the perceived terminal.

[0030] Optionally, before the first core network element receives the information related to the sensor node switching, at least one of the following is further included:

[0031] The first core network element sends a first subscription message to the source perception RAN node or terminal; wherein the first subscription message is used to instruct the source perception RAN node or terminal to send the perception node switching related information;

[0032] The first core network element sends a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information;

[0033] The first core network element sends a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information.

[0034] Optionally, when the target perception node includes a target perception RAN node, the first core network element performs a perception node switching process for the target perception node, including:

[0035] The first core network element sends the perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following:

[0036] Perceived resolution;

[0037] Perceptual accuracy;

[0038] Frame rate;

[0039] Perception of time;

[0040] Target area information;

[0041] Delay;

[0042] Perceived target information.

[0043] Optionally, the first core network element receives the information related to the sensor node switching, including at least one of the following:

[0044] The first core network element receives the sensing node switching related information sent by the source sensing terminal or the RAN node;

[0045] The first core network element receives the perception node switching related information sent by the fourth core network element.

[0046] Optionally, the sensing node switching related information sent by the source sensing terminal or the RAN node includes at least one of the following:

[0047] The first indication information is used to indicate the handover perception terminal;

[0048] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0049] Optionally, the perception node switching related information sent by the fourth core network network element includes terminal perception subscription information, and the terminal perception subscription information includes at least one of the following:

[0050] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0051] Perception of time;

[0052] Perceptual accuracy;

[0053] Perception area.

[0054] Optionally, before the first core network element receives the information related to the sensor node switching, at least one of the following is further included:

[0055] The first core network element sends a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information.

[0056] Optionally, in a case where the target perception node includes a target perception terminal, the first core network element performs a perception node switching process for the target perception node, including:

[0057] The first core network element determines a target RAN node when determining that a RAN node serving the target perception terminal needs to be switched, and sends relevant information of the target perception terminal to the target RAN node;

[0058] and / or,

[0059] The first core network element sends the relevant information of the target perception terminal to the first RAN node when determining that there is no need to switch to the RAN node serving the target perception terminal; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0060] The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

[0061] The present application provides a sensing node switching method, including:

[0062] The RAN node sends the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

[0063] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0064] Optionally, the sensing node switching related information includes at least one of the following:

[0065] The first indication information is used to indicate the switching perception node;

[0066] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0067] Identification information of the target sensing node;

[0068] Mobility analysis information of the terminal.

[0069] The present application provides a sensing node switching method, including:

[0070] The terminal sends the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

[0071] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0072] Optionally, the sensing node switching related information includes at least one of the following:

[0073] The first indication information is used to indicate the switching perception node;

[0074] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0075] Perception information measurement report.

[0076] The present application provides a sensing node switching method, including:

[0077] The first RAN node determines a target perception node according to the perception node handover related information;

[0078] The first RAN node performs a perception node switching process for the target perception node.

[0079] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0080] Optionally, when the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following:

[0081] Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0082] Terminal mobility analysis information;

[0083] Perception information measurement report;

[0084] Fourth indication information, used to indicate switching perception nodes;

[0085] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0086] Optionally, before the first RAN node determines the target perception node according to the perception node handover related information, the first RAN node further includes at least one of the following:

[0087] The first RAN node receives the sensing node switching related information sent by the second RAN node;

[0088] The first RAN node receives the sensing node switching related information sent by the terminal;

[0089] The first RAN node receives the perception node switching related information sent by the third core network element.

[0090] Optionally, the perception node switching related information sent by the second RAN node includes perception capability related information of the second RAN node.

[0091] Optionally, the perception node switching related information sent by the terminal includes: a perception information measurement report and / or perception capability related information of at least one second RAN node.

[0092] Optionally, the perception node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0093] Optionally, the sensory capability-related information includes at least one of the following:

[0094] Sixth indication information, used to indicate whether the second RAN node supports the sensing capability;

[0095] The sensing capability information supported by the second RAN node.

[0096] Optionally, before the first RAN node determines the target perception node according to the perception node handover related information, the step includes:

[0097] When the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability, the first RAN node sends a request message to the first core network element;

[0098] The first RAN node receives a response message sent by the first core network element; wherein the response message carries perception capability information supported by the second RAN node.

[0099] Optionally, when the target perception node includes a target perception RAN node, the first RAN node performs a perception node switching process for the target perception node, including:

[0100] The first RAN node sends perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following:

[0101] Perceived resolution;

[0102] Perceptual accuracy;

[0103] Frame rate;

[0104] Perception of time;

[0105] Target area information;

[0106] Delay;

[0107] Perceived target information.

[0108] Optionally, in the case where the target perception node includes a target perception terminal, before the first RAN node determines the target perception node according to the perception node handover related information, at least one of the following is included:

[0109] The first RAN node determines the perception node switching related information according to the obtained terminal perception related information;

[0110] The first RAN node receives the perception node switching related information sent by the source perception terminal.

[0111] Optionally, in a case where the target perception node includes a target perception terminal, the first RAN node performs a perception node switching process for the target perception node, including:

[0112] The first RAN node determines a target RAN node when determining that a RAN node serving the target perception terminal needs to be switched, and sends relevant information of the target perception terminal to the target RAN node;

[0113] and / or,

[0114] The first RAN node sends the relevant information of the target perception terminal to the first RAN node when determining that there is no need to switch to the RAN node serving the target perception terminal; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0115] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0116] The embodiment of the present application provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0117] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0118] Receive information related to the switching of sensing nodes;

[0119] Determine a target sensing node according to the sensing node switching related information;

[0120] For the target sensing node, a sensing node switching process is performed.

[0121] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0122] Optionally, the sensing node switching related information includes at least one of the following:

[0123] The first indication information is used to indicate the switching perception node;

[0124] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0125] Perception information measurement report;

[0126] Identification information of the target sensing node;

[0127] Terminal mobility analysis information;

[0128] The location information of the terminal;

[0129] The terminal senses the contract information.

[0130] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0131] Receiving the sensing node switching related information sent by the source sensing RAN node or the terminal;

[0132] Receiving the sensing node switching related information sent by the second core network network element;

[0133] Receive the perception node switching related information sent by the third core network element.

[0134] Optionally, the sensing node handover related information sent by the source sensing RAN node or terminal includes at least one of the following:

[0135] The first indication information is used to indicate a handover-aware RAN node;

[0136] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement;

[0137] Perception information measurement report;

[0138] identification information of the target sensing RAN node;

[0139] The source sensing RAN node provides the mobility analysis information of the sensing terminal;

[0140] The source senses the mobility analysis information of the sensed terminal provided by the RAN node.

[0141] Optionally, the sensing node switching related information sent by the second core network element includes: location information of the sensing terminal, and / or location information of the sensed terminal;

[0142] Optionally, the perception node switching related information sent by the third core network network element includes: mobility analysis information of the perception terminal, and / or mobility analysis information of the perceived terminal.

[0143] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0144] Sending a first subscription message to the source sensing RAN node or terminal; wherein the first subscription message is used to instruct the source sensing RAN node or terminal to send the sensing node switching related information;

[0145] Sending a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information;

[0146] Send a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information.

[0147] Optionally, in a case where the target aware node includes a target aware RAN node, the processor is configured to read a computer program in the memory and perform the following operations:

[0148] Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following:

[0149] Perceived resolution;

[0150] Perceptual accuracy;

[0151] Frame rate;

[0152] Perception of time;

[0153] Target area information;

[0154] Delay;

[0155] Perceived target information.

[0156] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0157] Receiving the sensing node switching related information sent by the source sensing terminal or the RAN node;

[0158] Receive the perception node switching related information sent by the fourth core network network element.

[0159] Optionally, the sensing node switching related information sent by the source sensing terminal or the RAN node includes at least one of the following:

[0160] The first indication information is used to indicate the handover perception terminal;

[0161] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0162] Optionally, the perception node switching related information sent by the fourth core network network element includes terminal perception subscription information, and the terminal perception subscription information includes at least one of the following:

[0163] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0164] Perception of time;

[0165] Perceptual accuracy;

[0166] Perception area.

[0167] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0168] Send a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information.

[0169] Optionally, when the target sensing node includes a target sensing terminal, the processor is configured to read a computer program in the memory and perform the following operations:

[0170] In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node;

[0171] and / or,

[0172] When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0173] The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

[0174] The embodiment of the present application provides a core network element, where the core network element is a first core network element, including:

[0175] A receiving unit, used to receive information related to the switching of the sensing node;

[0176] A determination unit, configured to determine a target sensing node according to the sensing node switching related information;

[0177] The processing unit is used to execute a sensing node switching process for the target sensing node.

[0178] The embodiment of the present application provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0179] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0180] Sending the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

[0181] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0182] Optionally, the sensing node switching related information includes at least one of the following:

[0183] The first indication information is used to indicate the switching perception node;

[0184] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0185] Identification information of the target sensing node;

[0186] Mobility analysis information of the terminal.

[0187] An embodiment of the present application provides a wireless access network node, including:

[0188] A sending unit is used to send the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

[0189] The embodiment of the present application provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0190] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0191] Sending the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

[0192] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0193] Optionally, the sensing node switching related information includes at least one of the following:

[0194] The first indication information is used to indicate the switching perception node;

[0195] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0196] Perception information measurement report.

[0197] An embodiment of the present application provides a terminal, including:

[0198] A sending unit is used to send the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

[0199] The embodiment of the present application provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0200] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0201] Determine the target sensing node according to the relevant information of the sensing node switching;

[0202] For the target sensing node, a sensing node switching process is performed.

[0203] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0204] Optionally, when the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following:

[0205] Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0206] Terminal mobility analysis information;

[0207] Perception information measurement report;

[0208] Fourth indication information, used to indicate switching perception nodes;

[0209] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0210] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0211] receiving the perception node switching related information sent by the second RAN node; wherein the perception node switching related information includes perception capability related information of the second RAN node;

[0212] Receiving the sensing node switching related information sent by the terminal; wherein the sensing node switching related information includes: a sensing information measurement report and / or sensing capability related information of at least one second RAN node;

[0213] Receive the perception node switching related information sent by the third core network element; wherein the perception node switching related information includes the mobility analysis information of the terminal.

[0214] Optionally, the sensory capability-related information includes at least one of the following:

[0215] Sixth indication information, used to indicate whether the second RAN node supports the sensing capability;

[0216] The sensing capability information supported by the second RAN node.

[0217] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0218] When the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability, sending a request message to the first core network element;

[0219] Receive a response message sent by the first core network element; wherein the response message carries perception capability information supported by the second RAN node.

[0220] Optionally, when the target-aware node includes a target-aware RAN node, the processor is configured to read a computer program in the memory and perform the following operations:

[0221] Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following:

[0222] Perceived resolution;

[0223] Perceptual accuracy;

[0224] Frame rate;

[0225] Perception of time;

[0226] Target area information;

[0227] Delay;

[0228] Perceived target information.

[0229] Optionally, when the target sensing node includes a target sensing terminal, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0230] Determine the sensing node switching related information according to the obtained terminal sensing related information;

[0231] The sensing node switching related information sent by the source sensing terminal is received.

[0232] Optionally, when the target sensing node includes a target sensing terminal, the processor is configured to read a computer program in the memory and perform the following operations:

[0233] In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node;

[0234] and / or,

[0235] When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0236] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0237] An embodiment of the present application provides a radio access network node, where the radio access network node is a first RAN node, including:

[0238] A first determining unit, configured to determine a target sensing node according to sensing node switching related information;

[0239] The processing unit is used to execute a sensing node switching process for the target sensing node.

[0240] An embodiment of the present application provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, wherein the computer program is used to cause the processor to execute the steps of the perception node switching method on the first core network element side as described above, or the computer program is used to cause the processor to execute the steps of the perception node switching method on the wireless access network node side as described above, or the computer program is used to cause the processor to execute the steps of the perception node switching method on the terminal side as described above.

[0241] The beneficial effects of the above technical solution of the present application are:

[0242] In the embodiment of the present application, the first core network element receives a first message carrying information related to the switching of the perception node, determines the target perception node according to the first message, and performs the perception node switching process for the target perception node. That is, when the perception node needs to be switched, the first core network element can select a suitable target perception RAN node and / or a target perception terminal as the perception node, so that the perception management within a specific area can be ensured for the mobility of the terminal to ensure the continuity of the communication perception service, which solves the problem that the current network side does not support the reselection of the perception node that meets the perception requirements and cannot ensure the continuity of the communication perception service. BRIEF DESCRIPTION OF THE DRAWINGS

[0243] Figure 1a One of the schematic diagrams showing the tightly coupled synaesthesia network architecture;

[0244] Figure 1b The second diagram of the tightly coupled synaesthesia network architecture;

[0245] Figure 2 Represents a loosely coupled synaesthesia network architecture;

[0246] Figure 3a One of the schematic diagrams representing the way of perception;

[0247] Figure 3b The second diagram showing the way of perception;

[0248] Figure 3c The third diagram showing the way of perception;

[0249] Figure 3d Diagram 4 showing the way of perception;

[0250] Figure 3e Diagram 5 showing the way of perception;

[0251] Figure 3f Diagram 6 showing the way of perception;

[0252] Figure 4a One of the schematic diagrams showing the switching of sensing nodes;

[0253] Figure 4b The second schematic diagram showing the switching of sensing nodes;

[0254] Figure 4c The third diagram showing the switching of sensing nodes;

[0255] Figure 5 Represents the perceived business continuity process flow chart;

[0256] Figure 6 One of the flowcharts showing the sensing node switching method according to an embodiment of the present application;

[0257] Figure 7 A second flowchart showing the method for switching a sensing node according to an embodiment of the present application;

[0258] Figure 8 A third flowchart showing the method for switching a sensing node according to an embodiment of the present application;

[0259] Fig. 9 One of the interactive schematic diagrams showing the switching of the sensing nodes in the embodiment of the present application;

[0260] Fig.10 A second interactive diagram showing the switching of sensing nodes according to an embodiment of the present application;

[0261] Fig.11 A fourth flowchart showing the sensing node switching method according to an embodiment of the present application;

[0262] Fig.12 A fifth flowchart showing the method for switching a sensing node according to an embodiment of the present application;

[0263] Fig.13 Flow chart six showing the sensing node switching method according to an embodiment of the present application;

[0264] Fig.14 A third interactive diagram showing the switching of sensing nodes according to an embodiment of the present application;

[0265] Fig.15 A fourth interactive diagram showing the switching of sensing nodes according to an embodiment of the present application;

[0266] Fig.16 One of the block diagrams showing the sensing node switching device according to an embodiment of the present application;

[0267] Fig.17 A second block diagram showing the sensing node switching device according to an embodiment of the present application;

[0268] Fig.18 The third block diagram of the perception node switching device according to an embodiment of the present application. DETAILED DESCRIPTION

[0269] In order to make the technical problems, technical solutions and advantages to be solved by the application clearer, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, for clarity and brevity, the description of known functions and structures has been omitted.

[0270] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0271] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the following 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.

[0272] Additionally, the terms "system" and "network" are often used interchangeably herein.

[0273] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems, 6G systems, etc. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, a 6G system, etc. These various systems include terminal equipment and network equipment. The system may also include core network parts, such as Evolved Packet System (EPS), 5G system (5GS), 6G system, etc.

[0274] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0275] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0276] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0277] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0278] The following is an introduction to the relevant technologies involved in this application:

[0279] 1. 5G synaesthesia fusion

[0280] Communication and perception fusion realizes the unified design of communication and perception functions through signal joint design and / or hardware sharing. The perception in communication and perception fusion can be understood as a wireless perception technology based on the communication system, which transmits wireless signals to the target area or object and analyzes the received wireless signals to obtain the corresponding perception measurement information. Therefore, the wireless communication network naturally has wireless perception capabilities. The base station and terminal will have both communication and perception capabilities, and can provide perception services for perception applications, including intelligent transportation, drone supervision, national railway perimeter safety detection, smart home, public safety, health monitoring, environmental detection and other fields.

[0281] 2. Network architecture

[0282] Considering the degree of coupling between the perception function and the functional modules in the 5G Core Network (5G Core Network, 5GC), the synaesthesia network architecture can be roughly divided into two types: tight coupling and loose coupling. A new functional network element for perception can be added in 5GC, such as a sensing function (SF network element), which is mainly responsible for perception control and perception measurement data calculation. The SF network element can include two logical perception functions: the sensing control plane function (Sensing Function-Control, SF-C) and the sensing user plane function (Sensing Function-User plane, SF-U), wherein the control signaling between the SF-C and the terminal (UE) and the RAN can be transmitted through the access and mobility management function (Access and Mobility Management Function, AMF) network element. The UE and RAN nodes transmit the perception measurement data to the SF-U. The SF-C and SF-U may also be logically inseparable. The SF logical function can be combined with the location management function (LMF) network element, or the LMF network element can be directly enhanced to implement the function, etc., and the embodiments of the present application are not limited to this.

[0283] like Figure 1a As shown in , a tightly coupled synaesthesia network architecture is given, in which SF-C and SF-U are logically not separated. Figure 1b As shown in , another tightly coupled synaesthesia network architecture is given, in which SF-C and SF-U are logically separated. Figure 2 As shown in the figure, a loosely coupled synaesthesia network architecture is given. Among them:

[0284] AMF network element, used for registration, connection management, etc.

[0285] User Plan Function (UPF) network element: used for external protocol data unit (PDU) session node interconnected with the data network, message routing and forwarding.

[0286] Session Management Function (SMF) network element: used for session establishment and deletion, user plane selection and control, UE IP allocation, etc.

[0287] Application Function (AF) network element: used to interact with the 3GPP core network to provide services. Based on the operator's deployment, trusted AF network elements can interact directly with related Network Function (NF) network elements, while untrusted AF network elements cannot interact directly with NF network elements, but should use the external open framework through the Network Exposure Function (NEF).

[0288] Policy Control Function (PCF) network element: used to support a unified policy framework to manage network behavior and provide policy rules for execution by control plane NF network elements.

[0289] Network Repository Function (NRF) network element: used to support service discovery function.

[0290] Unified Data Management (UDM) network element: used to store terminal information, such as contract information, information about established PDU sessions, etc.

[0291] NEF network element: used to provide functions related to securely exposing the services and capabilities provided by the 3GPP network to external networks.

[0292] 3. Perception

[0293] like Figures 3a to 3f As shown in Figure 1, six basic sensing methods are given, including: base station self-transmission and self-reception (such as Figure 3a As shown), base station A sends and B receives (as shown Figure 3b As shown), UE sends and base station receives (as shown Figure 3c As shown), UE sends and receives automatically (as shown Figure 3d As shown), UE-A sends UE-B receives (as shown Figure 3e As shown), the base station sends UE receives (as shown Figure 3f In addition, in the actual perception process, a combination of the above six perception methods may be used for perception according to different perception scenarios, perception environments, perception service requirements, etc., and the embodiments of the present application are not limited thereto.

[0294] 4. Perceive scenarios and needs

[0295] There is a common perception demand in all walks of life, which can be roughly summarized as per-area perception and per-object perception. Per-area perception mainly perceives target objects in a specific geographical area. For example, the supervision of unmanned aerial vehicles (UAVs) at civil aviation airports requires the perception and detection of a specific large-scale airspace to identify illegal UAV intrusions. Another example: the dynamic map application of vehicle to everything (V2X) requires real-time perception and detection of the entire road section to update the dynamic map for vehicle assisted driving. Per-object perception mainly perceives a single target object and even requires continuous tracking of the object. The target object can have no UE identity (such as animals, buildings, etc.); the target object can also have a UE identity, including the object itself including the UE identity (such as a car with a UE module) and the object and the UE identity are coupled (such as a person carrying a mobile phone terminal). For example: the continuous tracking of suspicious vehicles or UAVs by regulatory agencies; another example: the detection of human breathing and heartbeat through the collaboration of base stations and terminal UEs.

[0296] In order to ensure the continuity of communication perception integration services and the quality of service (QoS) of communication perception integration, the network may need to switch perception nodes. On the other hand, considering the different perception capabilities of different perception nodes and the uneven distribution of perception nodes, the process of perception node switching may also be accompanied by the switching of different perception methods.

[0297] Take the example of a base station sending a downlink sensing signal, a UE receiving the sensing signal, and measuring the distance and speed of a moving vehicle in the sensing area (the same applies to the uplink): Figure 4a The scenario of the switching of the perception node UE is given. When the target vehicle moves from the vicinity of UE1 to the vicinity of UE2, the quality of the perception signal reflected by the target vehicle may be significantly reduced due to the increase in the distance between UE1 and the target vehicle or the change in the radar cross section (RCS) of the target vehicle, thereby causing the performance of the perception or interawareness integrated service to degrade or even interrupt the service. The base station or the perception function network element can schedule UE2 as the perception node after the switch based on the UE information in the area. Figure 4b The scenario of the switching of the sensing node base station is given. Similarly, base station 1 (source sensing node) or the sensing function network element can schedule base station 2 (target sensing node) as the sensing node after the switch, and continue to complete the sensing or interawareness integrated service with the UE. Figure 4cIt gives the situation where both the base station and the UE are switched, that is, before the switch, the base station 1 and UE1 sense the target vehicle, and after the switch, the base station 2 and UE2 sense the target vehicle.

[0298] In the case where the UE participates in the perception operation or the perceived target is the UE, the UE and / or the base station are performing perception detection, and the perception measurement data obtained by the UE can be sent to the perception server (such as AF network element, or application server (AS), etc.) through the traditional user plane without passing through the SF network element; or, it can be sent to the SF network element through the user plane and then opened to the perception server (AF network element or AS) through the NEF network element; or, it can also be sent to the AF network element or AS through the control plane, for example: the UE sends it to the SF network element through the RAN node and the AMF network element, or directly sends it to the SF network element through the RAN node, and then sends it to the AF network element or AS through the NEF network element.

[0299] The perception data obtained by the base station can be sent to the SF network element through the user plane and then opened to the perception server (AF network element or AS) through the NEF network element; or, it can also be sent to the AF network element or AS through the control plane, for example: the UE sends it to the SF network element through the RAN node and the AMF network element, or directly sends it to the SF network element through the RAN node, and then sends it to the AF network element or AS through the NEF network element.

[0300] like Figure 5 As shown in FIG, a flowchart of perceiving business continuity is given. Specifically, the following steps are included:

[0301] Step 1: The UE starts measurement, collects information about surrounding base stations, generates a measurement report and sends it to the source base station.

[0302] Step 2: The source base station selects a suitable base station as the target base station according to the received UE measurement report, and sends the perception detection related parameters to the target base station.

[0303] There are three ways to ensure business continuity:

[0304] Step 3a: If the UE adopts the traditional user plane to transmit the perception measurement data, the user plane path is switched to the target base station using the current switching process based on Xn or N2. The UE can send the perception data to the AF network element or AS through the target base station. If the UE or the base station adopts the user plane to transmit the perception measurement data to the SF network element, the user plane path is switched to the target base station using the current switching process based on Xn or N2. The UE can first send the perception measurement data to the SF network element through the target base station or the target base station, and the SF network element is then opened to the perception server (such as the AF network element or AS) through the NEF network element.

[0305] Step 3b: If the current UE or base station uses the control plane to transmit perception data, the control plane path between the UE or base station and the SF network element is updated by switching the N2 connection, and the SF network element is then opened to the perception server (such as the AF network element or AS) through the NEF network element.

[0306] In the case where the UE does not participate in the sensing operation or the sensed target is not the UE, the base station is performing sensing detection, and the sensing data obtained by the base station can be sent to the SF network element through the user plane first and then opened to the sensing server (such as the AF network element or AS) through the NEF network element; or, it can also be sent to the AF network element or AS through the control plane, for example: the RAN node sends it to the SF network element through the AMF network element, or the RAN node directly to the SF network element, and then sends it to the AF network element or AS through the NEF network element. If the sensing target moves from RAN1 to RAN2, there is no UE handover involved at this time, and the SF network element can obtain continuous sensing measurement data of the sensing target based on the sensing measurement data of RAN1 and RAN2.

[0307] Currently, since the source RAN node does not have the perception capability information of other RAN nodes, it is impossible to select a target RAN node that meets the perception requirements and ensure the continuity of the perception service. In addition, the current communication technology cannot ensure the perception management within a specific area for the mobility of UE (such as perception node UE, target UE or so-called perceived UE), and does not consider how to ensure the continuity of the perception service when the UE needs to switch as a perception node.

[0308] The embodiments of the present application provide a method, device, core network element, access network node and terminal for switching perception nodes, which solve the problem that the current network side does not support reselection of perception nodes that meet perception requirements and cannot ensure the continuity of interawareness services. Among them, the method and the device (or the core network element or the access network node or the terminal) are based on the same application concept. Since the method and the device (or the core network element or the access network node or the terminal) solve the problem in a similar principle, the implementation of the method and the device (or the core network element or the access network node or the terminal) can refer to each other, and the repeated parts will not be repeated.

[0309] like Figure 6 As shown, an embodiment of the present application provides a sensing node switching method, which specifically includes the following steps:

[0310] Step 61: The first core network element receives information related to the switching of the perception node.

[0311] Optionally, the first core network element receives a first message; wherein the first message carries information related to the switching of the perception node.

[0312] Optionally, the sensing node includes: sensing RAN node, and / or sensing terminal. That is, the sensing node switching in the embodiment of the present application includes: sensing RAN node, and / or sensing terminal switching.

[0313] Optionally, the perception node switching related information includes but is not limited to at least one of the following: a perception node (including a perception RAN node and / or a perception terminal) switching request of a source perception RAN node, a perception node (including a perception RAN node and / or a perception terminal) switching request of a source perception terminal, relevant information used to determine whether it is necessary to switch the perception node, relevant information used to determine the target perception node to switch to, etc. The embodiments of the present application are not limited to this.

[0314] Optionally, the first core network element may be an AS or a SF network element, etc., wherein the SF network element is not limited to being logically separated or not separated from the SF-C and SF-U.

[0315] Step 62: The first core network element determines a target perception node according to the perception node switching related information.

[0316] Optionally, the target-aware node includes: a target-aware RAN node, and / or a target-aware terminal.

[0317] Optionally, when the RAN node needs to be switched as a perception node, for example, due to terminal mobility, the perception RAN node cannot meet the perception service requirements, and the terminal can be a perception terminal or a perceived terminal participating in the perception operation. In this scenario, the perception terminal does not need to be switched, and the perception RAN node needs to be reselected to ensure the continuity of the interawareness service. Specifically, the solution in which the RAN node (taking the base station as an example) needs to be switched as a perception node covers the following scenarios:

[0318] Scenario 1: When the base station is in self-transmitting and self-receiving mode or base station A transmits and B receives mode, and the sensing target is a terminal with communication capabilities (such as per-object sensing), the base station needs to be switched due to the mobility of the target terminal (or the perceived terminal) or because the base station sensing node cannot meet the sensing service requirements.

[0319] Scenario 2: When the terminal is in the mode of sending and the base station is receiving, or the base station is in the mode of sending and the terminal is receiving, and the sensed target is a specific area (such as per-area perception), the base station needs to be switched because the base station sensing node cannot meet the sensing service requirements.

[0320] Scenario 3: When the terminal is in the mode of sending and the base station is receiving, or the base station is in the mode of sending and the terminal is receiving, and the perceived target is a terminal with communication capabilities (for example, for Per-Object perception), the base station needs to be switched due to the mobility of the target terminal.

[0321] Scenario 4: When the terminal sends and the base station receives or the base station sends and the terminal receives, the perceived target is a terminal with communication capabilities (for example, for Per-Object perception). Due to the mobility of the sensing node terminal and the target terminal, the base station needs to be switched.

[0322] Optionally, when the terminal needs to be reselected as a perception node (for example, the perception terminal cannot meet the perception service requirements), if the RAN node can be switched or not as a perception node, in this scenario, the perception terminal needs to be reselected (or the RAN node may be reselected) to ensure the continuity of the communication perception service. Specifically, the solution where the terminal needs to be reselected as a perception node covers the following scenarios:

[0323] Scenario 1: When the terminal sends and the base station receives, or the base station sends and the terminal receives, or the terminal sends and receives by itself, or terminal A sends and B receives, and the sensed target is a specific area (for example, for Per-Area perception), since the perception terminal cannot meet the perception service requirements, it is necessary to reselect the perception terminal (at this time, it may be necessary to switch base stations or not).

[0324] Scenario 2: When the terminal sends and the base station receives, or the base station sends and the terminal receives, or the terminal sends and receives by itself, or terminal A sends and B receives, the perceived target is a terminal with communication capabilities (for example, for Per-Object perception) or the perceived target is a specific area (for Per-Area perception), due to the mobility of the target terminal and / or the sensing terminal, it is necessary to reselect the sensing terminal (at this time, it may be necessary to switch the base station or not).

[0325] Step 63: The first core network element performs a perception node switching process for the target perception node.

[0326] Optionally, when the RAN node needs to be switched as a perception node, the first core network network element provides the source RAN node with relevant information of the selected target RAN node (optionally, the first core network network element may also send a perception end indication to the source RAN node). The source RAN node determines the target RAN node to be switched to based on the received relevant information of the target RAN node. The source RAN node establishes an association with the target RAN node and performs a switching process. Further, the first core network network element may send a perception control request to the target RAN node to control the target RAN node to initiate detection and acquisition of perception measurement data (for example: configuring the perception distance, speed, angle resolution and accuracy, frame rate, perception time, perception measurement data reporting period, etc. required for measurement).

[0327] Optionally, when the terminal needs to be reselected as a perception node, the first core network network element determines the target perception terminal and sends relevant information of the target perception terminal to the serving RAN node of the target perception terminal (optionally, the first core network network element may send a perception end indication to the source perception terminal). The first core network network element sends a perception control request to the target perception terminal (or to the target perception terminal and its serving RAN node) to control it to initiate detection and acquisition of perception measurement data.

[0328] In the above scheme, the first core network element receives a first message carrying information related to the switching of the perception node, determines the target perception node according to the first message, and performs the perception node switching process for the target perception node. That is, when the perception node needs to be switched, the first core network element can select a suitable target perception RAN node and / or a target perception terminal as the perception node, so that the perception management within a specific area can be ensured for the mobility of the terminal to ensure the continuity of the communication perception service, which solves the problem that the current network side does not support the reselection of the perception node that meets the perception requirements and cannot ensure the continuity of the communication perception service.

[0329] Optionally, the sensing node switching related information includes at least one of the following:

[0330] The first indication information is used to indicate the switching of the perception node; for example, the perception node includes but is not limited to: a perception RAN node and / or a perception terminal, and the first indication is used to indicate the switching of the perception RAN node, and / or the first indication information is used to indicate the switching of the perception terminal. In this way, the first core network element can learn that the perception node needs to be switched according to the first indication information.

[0331] The second indication information is used to indicate whether the source perception node meets the perception requirement; for example, the source perception node includes but is not limited to: a source perception RAN node and / or a source perception terminal, and the second indication information is used to indicate whether the source perception RAN node meets the perception requirement, and / or the second indication information is used to indicate whether the perception terminal meets the perception requirement. In this way, the first core network element can perform perception node switching when it is learned from the second indication information that the current perception node (i.e., the source perception node) does not meet the perception requirement.

[0332] Perception information measurement report; for example, the perception information measurement report may include but is not limited to at least one of the following: signal measurement report (such as communication signal measurement report between the terminal and the RAN node), perception accuracy, latency, etc., and the embodiments of the present application are not limited thereto. In this way, the first core network element can decide whether to switch the perception node based on the perception information measurement report.

[0333] Identification information of the target perception node; for example, when the source perception RAN node or terminal requests the first core network element to switch the perception node, if the source perception RAN node or terminal can determine the target perception node, the source perception RAN node or terminal can report the identification information of the target perception node (here, the target perception node includes the perception RAN node and / or the perception terminal). In this way, the first core network element can learn that the perception node needs to be switched according to the identification information of the target perception node and can perform the perception node switching process according to the identification information of the target perception node.

[0334] The mobility analysis information of the terminal; for example, the mobility analysis information of the terminal may be provided by a network data analysis function (NWDAF) network element or a source RAN node, etc., but the embodiments of the present application are not limited thereto. In this way, the first core network network element may decide whether to switch the perception node based on the mobility analysis information of the terminal.

[0335] The location information of the terminal; for example, the location information of the terminal can be provided by the AMF network element, and the location information of the terminal may include but is not limited to at least one of the following: the identification information of the radio access network node where the terminal is located (RAN node identifier), the identification information of the cell where the terminal is located (Cell ID), whether the terminal is located in the area of ​​interest (Area of ​​Interest), etc. The embodiments of the present application are not limited to this.

[0336] Terminal perception contract information; for example, the terminal perception contract information may be provided by the UDM network element, etc., and the embodiments of the present application are not limited thereto. Thus, when the perception node is a perception terminal, the first core network element may select a target perception terminal based on the terminal perception contract information obtained from the UDM network element when determining that the perception terminal needs to be switched.

[0337] Optionally, when the perception node includes a perception RAN node, the first core network element receives the perception node switching related information, including at least one of the following:

[0338] The first core network element receives the sensing node switching related information sent by the source sensing RAN node or the terminal;

[0339] The first core network element receives the sensing node switching related information sent by the second core network element;

[0340] The first core network element receives the perception node switching related information sent by the third core network element.

[0341] That is, the first core network element receives the first message, including at least one of the following:

[0342] The first core network element receives the first message sent by the source perception RAN node or terminal; wherein the first message carries information related to the switching of the perception node;

[0343] The first core network element receives the first message sent by the second core network element; wherein the first message carries information related to the switching of the perception node;

[0344] The first core network element receives the first message sent by the third core network element; wherein the first message carries information related to the switching of the perception node.

[0345] It should be noted that the first messages sent by the source-aware RAN node, the terminal, the second core network element, and the third core network element are different, that is, the first messages are sent independently between the source-aware RAN node, the terminal, the second core network element, and the third core network element.

[0346] Optionally, the first message sent by the source perception RAN node or terminal may be a handover request message. For example, when the terminal moves or the RAN node cannot meet the perception service requirements (such as: QoS requirements such as latency cannot be met), the source perception RAN node or terminal may send a handover request message to the first core network element to request the first core network element to switch the perception node. The perception node handover related information sent by the source perception RAN node or terminal, that is, the first message sent by the source perception RAN node or terminal carries at least one of the following:

[0347] The first indication information is used to indicate a handover-aware RAN node;

[0348] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement;

[0349] Perception information measurement report;

[0350] identification information of the target sensing RAN node;

[0351] The source sensing RAN node provides the mobility analysis information of the sensing terminal;

[0352] The mobility analysis information of the sensed terminal provided by the source sensing RAN node;

[0353] Optionally, the sensing node switching related information sent by the second core network element includes: the location information of the sensing terminal, and / or, the location information of the sensed terminal. That is, the first message sent by the second core network element carries: the location information of the sensing terminal, and / or, the location information of the sensed terminal; optionally, the second core network element may be an AMF element, etc., and the embodiments of the present application are not limited thereto.

[0354] Optionally, the perception node switching related information sent by the third core network element includes: mobility analysis information of the perception terminal, and / or, mobility analysis information of the perceived terminal. That is, the first message sent by the third core network element carries: mobility analysis information of the perception terminal, and / or, mobility analysis information of the perceived terminal; optionally, the third core network element may be a NWDAF element, etc., and the embodiments of the present application are not limited thereto.

[0355] In this embodiment, the first core network network element can determine the target perception RAN node based on a switching request message received from a source RAN node or terminal (for example, carrying one or more of the first indication information, the second indication information, the perception information measurement report, the identification information of the target perception RAN node, the mobility analysis information of the terminal, etc.), the terminal location information received from the AMF network element, the terminal mobility analysis received from the NWDAF network element, and one or more of the target area information to be perceived, the location information of the target object (or referred to as the perceived target), the perception capability of the RAN node, the location of the perception node, the load, authentication or authorization information, etc.

[0356] Optionally, before the first core network element receives the information related to the sensor node switching, that is, before the first core network element receives the first message, at least one of the following items is further included:

[0357] The first core network element sends a first subscription message to the source perception RAN node or terminal; wherein the first subscription message is used to instruct the source perception RAN node or terminal to send the perception node switching related information, that is, the first message is sent by the source perception RAN node or terminal according to the first subscription message;

[0358] The first core network element sends a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information, that is, the first message is sent by the second core network element according to the second subscription message;

[0359] The first core network element sends a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information, that is, the first message is sent by the third core network element according to the third subscription message.

[0360] Optionally, the first core network network element sends a first subscription message to the source perception RAN node or terminal to subscribe to the source perception RAN node or terminal for relevant information about the perception node switching. Specifically, the source perception RAN node or terminal reporting relevant information about the perception node switching may be an event-triggered report, for example: the event triggering condition may be that the RAN node cannot meet the perception service requirements, or the terminal measurement signal is lower than a certain threshold, etc. The source perception RAN node or terminal reporting relevant information about the perception node switching may also be a periodic report, for example: periodic reporting of perception information measurement reports. Among them, the first core network network element may send a first subscription message to the AMF network element, and the AMF network element then sends it to the terminal through the N1 interface, or the first core network network element may send a first subscription message to the RAN node, and the RAN node then sends it to the terminal through the Uu interface, etc. Optionally, the first subscription message may be a Radio Resource Control (RRC) message.

[0361] Optionally, the first core network element sends a second subscription message to the second core network element, which may specifically be to subscribe to the location information of the terminal (such as subscribing to the location information of the sensing terminal or the sensed terminal) to the AMF element. For example, the location information of the terminal may include but is not limited to at least one of the following: identification information of the wireless access network node where the terminal is located, identification information of the node where the terminal is located, whether the terminal is located in an area of ​​interest, etc.

[0362] Optionally, the first core network element sends a third subscription message to the third core network element, which may specifically be to subscribe to the mobility analysis information of the terminal (such as subscribing to the mobility analysis information of the sensing terminal or the sensed terminal, etc.) to the NWDAF network element.

[0363] Optionally, when the target perception node includes a target perception RAN node, the first core network element performs a perception node switching process for the target perception node, including:

[0364] The first core network element sends the perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following:

[0365] Perceived resolution;

[0366] Perceptual accuracy;

[0367] Frame rate; for example: Frame rate = 25fps, indicating the number of frames per second;

[0368] Perception time; for example, the perception time includes but is not limited to at least one of the following: perception duration (i.e., the length of time to perform perception), perception start time, perception cycle (i.e., how long it takes to perform perception once), feedback cycle (i.e., how long it takes to feedback perception data), feedback duration (i.e., how long it takes to feedback perception data);

[0369] Target area information; for example, the target area information specifically refers to the target area to be sensed; the target area information includes but is not limited to at least one of the following: indication information indicating a specific geographical area, one or more tracking area identifiers (TAI), and one or more cell identifiers;

[0370] Delay; for example: the delay includes but is not limited to at least one of the following: perception delay (i.e., the delay caused by the perception node performing the perception operation), the delay caused by the perception node from performing the perception operation to the SF network element receiving the perception data, etc.

[0371] Perceived target information; for example: the perceived target information may be terminal type, vehicle type, terminal identification, vehicle identification, location information, etc., but the embodiments of the present application are not limited thereto.

[0372] Optionally, the perception assistance information can be used in scenarios oriented to Per-Object perception. For example: for an NG-based handover process, the AMF network element can send a HANDOVER REQUEST message via the NG Application Protocol (NGAP) to send the perception assistance information to the target perception RAN node. Alternatively, for an Xn-based handover process, the source RAN node sends a HANDOVER REQUEST message via the Xn Application Protocol (XnAP) to send the perception assistance information to the target perception RAN node. Alternatively, if the AMF network element also needs to be changed during the handover process, the source AMF network element can send the perception assistance information to the target AMF network element.

[0373] Optionally, when the sensing node includes a sensing terminal, the first core network element receiving the sensing node switching related information includes at least one of the following:

[0374] The first core network element receives the sensing node switching related information sent by the source sensing terminal or the RAN node;

[0375] The first core network element receives the perception node switching related information sent by the fourth core network element.

[0376] That is, the first core network element receives the first message, including at least one of the following:

[0377] The first core network element receives the first message sent by the source perception terminal or the RAN node; wherein the first message carries the information related to the switching of the perception node;

[0378] The first core network element receives the first message sent by the fourth core network element; wherein the first message carries the information related to the switching of the perception node.

[0379] Optionally, the perception node handover related information sent by the source perception terminal or the RAN node, that is, the first message sent by the source perception terminal or the RAN node, carries at least one of the following:

[0380] The first indication information is used to indicate the handover perception terminal;

[0381] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0382] In this embodiment, when the source perception terminal or the RAN node has the ability to determine whether the perception terminal needs to be switched, the source perception terminal or the RAN node can send the first indication information and / or the second indication information to the first core network element to request switching the perception terminal.

[0383] Optionally, the perception node switching related information sent by the fourth core network network element includes terminal perception subscription information, that is, the first message sent by the fourth core network network element carries the terminal perception subscription information, and the terminal perception subscription information includes at least one of the following:

[0384] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0385] Perception time; for example, the perception time includes but is not limited to at least one of the following: perception duration (i.e., the length of time to perform perception), perception start time, perception cycle (i.e., how long it takes to perform perception once), feedback cycle (i.e., how long it takes to feedback perception data), feedback duration (i.e., how long it takes to feedback perception data);

[0386] Perception accuracy; for example: perception accuracy includes but is not limited to at least one of the following: perception distance, distance resolution, perception speed, speed resolution, perception angle, angle resolution, etc.

[0387] Perception area; for example: the perception area specifically refers to the area supported for performing perception, wherein the perception area includes but is not limited to: a specific geographical area, one or more TAIs, one or more cell identifiers, etc.

[0388] For example, the first core network element receives the first message sent by the source perception terminal or RAN node, or is called an update message. Specifically, it may be an update message sent by the terminal to the first core network element (such as SF-C) through the AMF network element (for example, when the terminal does not meet the perception requirements such as perception accuracy and latency, the terminal will be offline, overloaded, etc.), and this update message is used to indicate that the source perception terminal cannot meet the perception requirements, or needs to reselect the perception terminal, etc.

[0389] For example: the first core network element receives the first message sent by the fourth core network element, which may be the first message carrying the terminal perception contract information sent by the UDM network element to the first core network element. Among them. The UDM network element stores the sensing service data (Sensing Service Data), which includes: whether the terminal is allowed to be sensed, the sensing time, the sensing accuracy, the sensing area, etc. The Sensing Service Data may be included in the access and mobility subscription data (Access and Mobility Subscription data).

[0390] In this embodiment, when the first core network network element determines that the perception node needs to be switched based on the received update message, it can reselect the perception terminal as the perception node based on one or more of the target area information, target object location information, terminal perception capability, terminal perception contract information, etc.

[0391] Optionally, before the first core network element receives the information related to the sensor node switching, that is, before the first core network element receives the first message, at least one of the following items is further included:

[0392] The first core network element sends a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information, that is, the first message is sent by the source perception terminal or the RAN node according to the fourth subscription message.

[0393] In this embodiment, the first core network element sends a fourth subscription message to the source perception terminal or the RAN node to request subscription update information from the source perception terminal or the RAN node. The update information may be an event-triggered report, for example, the event triggering condition may be that the source perception terminal cannot meet the perception service requirements, or the target terminal (or perceived terminal) moves out of a specific area, etc. The update information may also be a periodic report, for example, reporting the perception status and / or communication status of the source perception terminal, etc.

[0394] Optionally, the first core network element may send a fourth subscription message to the AMF element, and the AMF element may send the fourth subscription message to the terminal through the N1 interface, or the first core network element may send a fourth subscription message to the RAN node, and the RAN node may send the fourth subscription message to the terminal through the Uu interface (for example, the fourth subscription message may be an RRC message). In addition, the update information may also include the information in the switching request message of the above embodiment for use in switching of the RAN node, etc., and the embodiments of the present application are not limited thereto.

[0395] Optionally, in a case where the target perception node includes a target perception terminal, the first core network element performs a perception node switching process for the target perception node, including:

[0396] The first core network element determines a target RAN node when determining that a RAN node serving the target perception terminal needs to be switched, and sends relevant information of the target perception terminal to the target RAN node;

[0397] and / or,

[0398] The first core network element sends the relevant information of the target perception terminal to the first RAN node when determining that there is no need to switch to the RAN node serving the target perception terminal; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0399] The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

[0400] In this embodiment, when the first core network network element determines that the perception terminal needs to be switched, it can further determine whether the RAN node needs to be switched. If the RAN node does not need to be switched (for example, the RAN node serving the source perception node can provide services for the target perception terminal), the first core network network element can send relevant information of the target perception terminal to the RAN node for the RAN node to establish a communication connection with the target perception terminal. If the RAN node needs to be switched (for example, the RAN node serving the source perception node cannot serve the target perception terminal), the first core network network element can reselect the target RAN node based on one or more of the target area information, the target object location information, the perception capability of the RAN node, the location of the perception node, the load, the authentication or authorization information, etc., and send relevant information of the target perception terminal to the target RAN node for the target RAN node to establish a communication connection with the target perception terminal.

[0401] The wireless access network node involved in the embodiment of the present application may also be referred to as a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, it may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the wireless access network node involved in the embodiments of the present application may be a wireless access network node (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a wireless access network node (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary wireless access network node (eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the wireless access network node may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0402] like Figure 7 As shown, the embodiment of the present application provides a sensing node switching method, comprising the following steps:

[0403] Step 71: The radio access network RAN ​​node sends the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

[0404] Optionally, the RAN node sends a first message to the first core network element; wherein the first message carries information related to the switching of the perception node.

[0405] Optionally, the perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

[0406] Optionally, the sensing node switching related information includes at least one of the following:

[0407] The first indication information is used to indicate the switching perception node;

[0408] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0409] Identification information of the target sensing node;

[0410] Mobility analysis information of the terminal.

[0411] It should be noted that the perception node switching method on the RAN node side in the embodiment of the present application and the perception node switching method on the first core network network element side are based on the same inventive concept. The two embodiments can refer to each other and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0412] like Figure 8 As shown, the embodiment of the present application provides a sensing node switching method, comprising the following steps:

[0413] Step 81: The terminal sends the information related to the sensor node switching to the first core network element; wherein the information related to the sensor node switching is used by the first core network element to perform the sensor node switching.

[0414] Optionally, the terminal sends a first message to a first core network element; wherein the first message carries information related to the switching of the perception node.

[0415] Optionally, the perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

[0416] Optionally, the sensing node switching related information includes at least one of the following:

[0417] The first indication information is used to indicate the switching perception node;

[0418] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0419] Perception information measurement report.

[0420] It should be noted that the perception node switching method on the terminal side in the embodiment of the present application and the perception node switching method on the first core network element side are based on the same inventive concept. The two embodiments can refer to each other and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0421] The terminal involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0422] The following describes the sensing node switching method of the embodiment of the present application in combination with a specific embodiment:

[0423] Embodiment 1:

[0424] like Fig. 9As shown, the RAN node needs to be switched as the perception node, for example, due to UE mobility, the perception node cannot meet the perception service requirements. The UE can be a perception node UE participating in the perception operation or a target UE to be perceived. In this scenario, the perception node UE does not need to be switched, but needs to reselect the RAN node to ensure the continuity of the interawareness service. Specifically, taking the RAN node as a base station as an example, the implementation plan covers the following scenarios:

[0425] Scenario 1: When the base station is in self-transmitting and self-receiving mode or base station A transmits and B receives mode, and the sensing target is a UE with communication capability (for Per-Object perception), the base station needs to be switched due to the mobility of the target UE or because the base station sensing node cannot meet the sensing service requirements.

[0426] Scenario 2: When the UE sends and the base station receives or the base station sends and the UE receives, the sensing target is a specific area (for Per-Area sensing). Since the base station sensing node cannot meet the sensing service requirements, it is necessary to switch the base station.

[0427] Scenario 3: When the UE sends and the base station receives or the base station sends and the UE receives, the sensing target is a UE with communication capability (for Per-Object sensing). Due to the mobility of the target UE, the base station needs to be switched.

[0428] Scenario 4: When the UE sends and the base station receives or the base station sends and the UE receives, the sensing target is a UE with communication capability (for Per-Object sensing). Due to the mobility of the sensing node UE and the target UE, the base station needs to be switched.

[0429] In this embodiment, it is taken as an example that the SF network element selects a target sensing RAN node based on the acquired information.

[0430] Step 0a, the SF network element obtains the sensing capability from the RAN node and / or UE (sensing UE), including the supported sensing modes (base station self-transmitting and self-receiving mode, the "receiving" capability in the UE transmitting and base station receiving mode), the sensing accuracy in each supported sensing mode, the sensing delay, etc. For example: the sensing accuracy includes but is not limited to at least one of the following: sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, angle resolution, etc.

[0431] Step 0b: The source sensing RAN node and / or UE (sensing UE) performs sensing measurement and transmits the measurement data to the SF network element and / or AF network element through a control plane or a user plane path.

[0432] Step 1a, optionally, the SF network element requests the source RAN node or UE (perceived UE) to subscribe to the switching information. The switching information may be event-triggered reporting, for example, the event triggering condition may be that the source perceived RAN node cannot meet the perceived service requirements, or the UE measurement signal is lower than a certain threshold, etc. The switching information may also be periodically reported, for example, periodically reporting a perception information measurement report, etc.

[0433] Specifically, the SF network element can send a subscription request message to the AMF network element, and the AMF network element sends it to the UE through N1, or the SF network element sends a subscription request message to the RAN, and the RAN node sends it to the UE through the Uu port (for example, the subscription request message can be an RRC message).

[0434] Step 1b: Optionally, the SF network element subscribes to the UE location (such as the sensing UE or the target UE) from the AMF network element. For example, the UE location information includes but is not limited to: RAN node identifier, Cell ID, whether the UE is located in the Area of ​​Interest, etc.

[0435] Step 1c: Optionally, the SF network element subscribes to the NWDAF network element for mobility analysis information of the UE (perceiving UE or target UE).

[0436] Step 2: The source-aware RAN node or UE (aware UE) sends handover information to the SF network element. For example, when the UE moves or the source-aware RAN node cannot meet the awareness service requirements (such as: QoS requirements such as latency cannot be met), the source-aware RAN node or UE (aware UE) sends handover information to the SF network element. The handover information may be one or more of the following:

[0437] The first indication information is used to indicate a handover-aware RAN node;

[0438] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement;

[0439] Perception information measurement report;

[0440] identification information of the target sensing RAN node;

[0441] The source sensing RAN node provides the mobility analysis information of the sensing terminal;

[0442] The source senses the mobility analysis information of the sensed terminal provided by the RAN node.

[0443] Step 3: The SF network element determines the target perception RAN node (e.g., determines the target perception RAN node identifier) ​​based on the handover information received from the source perception RAN node or UE, the UE location information received from the AMF network element, the UE mobility analysis information received from the NWDAF network element, and one or more of the target area information, the target object location information, the perception capability of the RAN node, the location of the perception node, the load, authentication or authorization information, etc. The SF network element provides the source RAN node with the relevant information of the selected target perception RAN node (e.g., providing the target perception RAN node identifier).

[0444] Step 4: The source-aware RAN node determines the target-aware RAN node to be switched to based on the received target-aware RAN node identifier, and then establishes an association with the target-aware RAN node. Optionally, the source-aware RAN node may perform a RAN node switching process based on existing technologies.

[0445] Step 5: Send the perception assistance information to the target perception RAN node. The perception assistance information includes but is not limited to at least one of the following: perception resolution, perception accuracy, frame rate, perception time, target area information, latency, perceived target information, etc. This perception assistance information can be used in scenarios oriented to Per-Object perception.

[0446] For NG-based handover, the AMF network element can send the HANDOVER REQUEST message via NGAP to send the perception assistance information to the target perception RAN node.

[0447] For Xn-based handover, the source sensing RAN node can send a HANDOVER REQUEST message through XnAP to send the sensing assistance information to the target sensing RAN node.

[0448] Optionally, if the AMF network element also needs to be changed during the RAN node switching process, the source AMF network element can send the perception assistance information to the target AMF network element.

[0449] Step 6: The SF network element sends a perception control request to the target perception RAN node to control the target perception RAN to initiate detection and acquisition of perception measurement data (for example, configuring the perception distance, perception speed, perception angle, distance resolution, speed resolution, angle resolution, frame rate, perception time, perception measurement data reporting period, etc. required for measurement).

[0450] Optionally, the SF network element sends a sensing end indication to the source sensing RAN node.

[0451] Embodiment 2:

[0452] like Fig.10 As shown, the UE needs to be reselected as the perception node (for example, the perception UE cannot meet the perception service requirements). If the RAN node is used as the perception node, it can be switched or not. In this scenario, how to reselect the UE (and RAN node) to ensure the continuity of the communication perception service. Specifically, the implementation plan covers the following scenarios:

[0453] Scenario 1: When the UE sends and the base station receives, or the base station sends and the UE receives, or the terminal sends and receives by itself, or the terminal A sends and B receives, the perception target is a specific area (for Per-Area perception). Since the perception UE (or the perception UE and the base station) cannot meet the perception service requirements, it is necessary to reselect the perception UE (at this time, it may or may not be necessary to switch the base station).

[0454] Scenario 2: When the UE sends and the base station receives, or the base station sends and the UE receives, or the terminal sends and receives by itself, or the terminal A sends and B receives, the sensing target is a UE with communication capabilities (for Per-Object perception) or the sensed target is a specific area (for Per-Area perception), due to the mobility of the target UE and / or the sensing UE, it is necessary to reselect the sensing UE (at this time, it may or may not be necessary to switch the base station).

[0455] In this embodiment, the SF network element selects a target sensing terminal based on the acquired information as an example.

[0456] Step 0a: The SF network element obtains the sensing capability from the RAN node and / or the UE, including the supported sensing modes (such as the UE self-transmitting and self-receiving mode, the "receiving" capability in the UE transmitting and receiving mode), the sensing accuracy in each supported sensing mode, the sensing delay, etc. For example, the sensing accuracy includes but is not limited to at least one of the following: sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, angle resolution, etc.

[0457] Step 0b: The RAN node and / or the UE performs perception measurement and transmits the measurement data to the SF network element and / or the AF network element through a control plane or a user plane path.

[0458] Step 1: Optionally, the SF network element requests subscription update information from the sensing UE or RAN node. The update information may be reported as an event trigger, for example, the event trigger condition may be that the sensing UE cannot meet the sensing service requirement, or the target UE moves out of a specific area, etc. The update information may also be reported periodically, for example, reporting the sensing state and / or communication state of the current sensing UE.

[0459] Specifically, the SF network element may send a subscription request message to the AMF network element, and the AMF network element may send it to the UE through N1, or the SF network element may send a subscription request message to the RAN node, and the RAN node may send it to the UE through the Uu port (for example, the subscription request message may be an RRC message). In addition, the update information may also include the switching information in step 1a of embodiment 1 for switching of the RAN node.

[0460] Step 2: The source sensing UE sends update information to the SF network element (such as SF-C) through the AMF network element (for example, when the source sensing UE does not meet the sensing requirements such as sensing accuracy and latency, the UE will be offline, overloaded, etc.). The update information is used to indicate that the source sensing UE cannot meet the sensing requirements or needs to reselect the sensing node.

[0461] Step 3: The SF network element determines that the perception node needs to be switched based on the received update information, and then reselects the target perception UE as the perception node based on one or more of the target area information, target object location information, UE perception capability, UE perception subscription information, etc.

[0462] The UE sensing subscription information can be obtained by the SF network element by requesting the UDM network element. For example, the UDM network element stores Sensing Service Data, which includes: whether the UE is allowed to be sensed, sensing time, sensing accuracy, sensing area, etc. The Sensing Service Data can be included in the Access and Mobility Subscription data.

[0463] Step 4: Optionally, the SF network element or the source RAN node (such as a serving RAN node of the source-aware UE) determines whether it is necessary to switch the RAN node.

[0464] Step 4a: If the RAN node does not need to be switched (for example, the RAN node serving the source-aware UE can provide services for the target-aware UE), the SF network element can send relevant information of the target-aware UE to the RAN node for the RAN node to establish a communication connection with the target-aware UE.

[0465] Step 4b, if the RAN node needs to be switched (for example, the RAN node serving the source perception UE cannot serve the target perception UE), the SF network element and / or the source RAN node may reselect the target RAN node based on one or more of the target area information, the target object location information, the perception capability of the RAN node, the location of the perception node, the load, authentication or authorization information, etc., and send relevant information of the target perception UE to the target RAN node, so that the target RAN node can establish a communication connection with the target perception UE.

[0466] Step 5: The SF network element sends a perception control request to the target perception UE (and RAN node) to control it to initiate detection and acquisition of perception measurement data. Optionally, the SF network element may send a perception end indication to the source perception UE (and source RAN node).

[0467] Step 6: The RAN node may exchange basic information with the target sensing UE, including but not limited to: sensing capability information, sensing resource requirement information, allocated sensing resource information, etc.

[0468] like Fig.11 As shown, the embodiment of the present application provides a sensing node switching method, which specifically includes the following steps:

[0469] Step 111: The first RAN node determines a target perception node according to the perception node handover related information;

[0470] Optionally, the sensing node includes: sensing RAN node, and / or sensing terminal. That is, the sensing node switching in the embodiment of the present application includes: sensing RAN node, and / or sensing terminal switching.

[0471] Optionally, the perception node switching related information includes but is not limited to at least one of the following: a perception node (including a perception RAN node and / or a perception terminal) switching request of a source perception RAN node, a perception node (including a perception RAN node and / or a perception terminal) switching request of a source perception terminal, relevant information used to determine whether it is necessary to switch the perception node, relevant information used to determine the target perception node to switch to, etc. The embodiments of the present application are not limited to this.

[0472] Optionally, the target-aware node includes: a target-aware RAN node, and / or a target-aware terminal.

[0473] Optionally, in the case where the RAN node needs to be switched as a perception node, for example, due to terminal mobility, the perception RAN node cannot meet the perception service requirements, and the terminal can be a perception terminal or a perceived terminal participating in the perception operation. In this scenario, the perception terminal does not need to be switched, and the perception RAN node needs to be reselected to ensure the continuity of the interawareness service. Specifically, the solution where the RAN node needs to be switched as a perception node covers the following scenarios:

[0474] Scenario 1: When the base station is in self-transmitting and self-receiving mode or base station A transmits and B receives mode, and the sensing target is a terminal with communication capabilities (for Per-Object perception), the base station needs to be switched due to the mobility of the target terminal (or the perceived terminal) or because the base station sensing node cannot meet the sensing service requirements.

[0475] Scenario 2: When the terminal is in the mode of sending and the base station is receiving, or the base station is in the mode of sending and the terminal is receiving, and the sensed target is a specific area (for Per-Area perception), the base station needs to be switched because the base station sensing node cannot meet the sensing service requirements.

[0476] Scenario 3: When the terminal is in the mode of sending and the base station is receiving, or the base station is in the mode of sending and the terminal is receiving, and the perceived target is a terminal with communication capability (for Per-Object perception), the base station needs to be switched due to the mobility of the target terminal.

[0477] Scenario 4: When the terminal is in the mode of sending and the base station is receiving, or the base station is in the mode of sending and the terminal is receiving, the perceived target is a terminal with communication capability (target-oriented (Per-Object perception)). Due to the mobility of the sensing node terminal and the target terminal, the base station needs to be switched.

[0478] Optionally, when the terminal needs to be reselected as a perception node (for example, the perception terminal cannot meet the perception service requirements), if the RAN node can be switched or not as a perception node, in this scenario, the perception terminal needs to be reselected (or the RAN node may be reselected) to ensure the continuity of the communication perception service. Specifically, the solution where the terminal needs to be reselected as a perception node covers the following scenarios:

[0479] Scenario 1: When the terminal sends and the base station receives, or the base station sends and the terminal receives, or the terminal sends and receives by itself, or terminal A sends and B receives, the sensed target is a specific area (for Per-Area perception). Since the sensing terminal (and base station) cannot meet the sensing service requirements, it is necessary to reselect the sensing terminal (at this time, it may or may not be necessary to switch base stations).

[0480] Scenario 2: When the terminal sends and the base station receives, or the base station sends and the terminal receives, or the terminal sends and receives by itself, or terminal A sends and B receives, the perceived target is a terminal with communication capabilities (for Per-Object perception) or the perceived target is a specific area (for Per-Area perception), due to the mobility of the target terminal and / or the sensing terminal, it is necessary to reselect the terminal (at this time, it may or may not be necessary to switch the base station).

[0481] Step 112: The first RAN node performs a sensor node switching process for the target sensor node.

[0482] Optionally, the first RAN node may perform a perception node switch based on a terminal request, or may determine whether a perception node switch needs to be performed, etc. After performing the perception node switch, for example, when the perception node is a perception RAN node, the SF network element may send a perception control request to the target perception RAN node to control the target perception RAN node to initiate detection and acquisition of perception measurement data (for example: configure the perception distance, perception speed, perception angle required for measurement, distance resolution, speed resolution, angle resolution, frame rate, perception time, perception measurement data reporting period, etc.). Alternatively, when the perception node is a perception terminal, the SF network element may send a perception control request to the target perception terminal (and RAN node) to control it to initiate detection and acquisition of perception measurement data, etc.

[0483] In this embodiment, the first RAN node determines the target perception node according to the perception node switching related information, and performs the perception node switching process for the target perception node. That is, when the perception node needs to be switched, the RAN node can select a suitable target perception RAN node and / or a target perception terminal as the perception node, so that the perception management within a specific area can be ensured for the mobility of the terminal to ensure the continuity of the communication perception service, which solves the problem that the current network side does not support the reselection of a perception node that meets the perception requirements and cannot ensure the continuity of the communication perception service.

[0484] Optionally, when the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following:

[0485] Information related to the perception capability of at least one second RAN node; wherein the target perception RAN node is determined from the at least one second RAN node; for example, the information related to the perception capability of the second RAN node can be obtained from a system message of the second RAN node, or when the terminal is capable of supporting reporting of information related to the perception capability of at least one second RAN node, it can also be obtained by reporting by the terminal, etc. The embodiment of the present application is not limited thereto. In this way, when the first RAN node determines that the perception RAN node needs to be switched, the target perception RAN node can be determined based on the information related to the perception capability of at least one second RAN node;

[0486] The mobility analysis information of the terminal; for example, the mobility analysis information of the terminal may be provided by a network data analysis function (NWDAF) network element, etc., but the embodiments of the present application are not limited thereto. In this way, the first RAN node may decide whether to switch the perception node based on the mobility analysis information of the terminal.

[0487] Perception information measurement report; for example, the perception information measurement report may include but is not limited to at least one of the following: signal measurement report (such as communication signal measurement report between the terminal and the RAN node), perception accuracy, latency, etc., and the embodiments of the present application are not limited thereto. In this way, the first RAN node can decide whether to switch the perception node based on the perception information measurement report;

[0488] The fourth indication information is used to indicate the switching of the perception node; for example: when the perception node is a perception terminal, the source perception terminal can send fourth indication information to the first RAN node to indicate the switching of the perception terminal, so that the first RAN node can be informed of the need to switch the perception terminal according to the fourth indication information.

[0489] The fifth indication information is used to indicate whether the source perception node meets the perception requirements; for example: when the perception node is a perception terminal, the source perception terminal can send the fifth indication information to the first RAN node. When the fifth indication information indicates that the source perception terminal does not meet the perception requirements, the first RAN node can learn from the fifth indication information that the current perception terminal does not meet the perception requirements, and it is necessary to switch the perception terminal.

[0490] Optionally, before the first RAN node determines the target perception node according to the perception node handover related information, the first RAN node further includes at least one of the following:

[0491] The first RAN node receives the sensor node switching related information sent by the second RAN node; for example: the first RAN node receives a system message sent by the second RAN node; wherein the system message carries the sensor node switching related information;

[0492] The first RAN node receives the information related to the switching of the sensing node sent by the terminal; for example: the first RAN node receives a second message sent by the terminal; wherein the second message carries the information related to the switching of the sensing node;

[0493] The first RAN node receives the perception node switching related information sent by the third core network element; for example: the first RAN node receives a third message sent by the third core network element; wherein the third message carries the perception node switching related information.

[0494] For example, the first RAN node receives a system message sent by the second RAN node, which may be that each RAN node carries the perception capability related information in a system broadcast message (for example, the system message may be a system information block (SIB) message, etc.).

[0495] Optionally, the perception node switching related information sent by the second RAN node includes perception capability related information of the second RAN node.

[0496] Optionally, the perception node switching related information sent by the terminal includes: a perception information measurement report and / or perception capability related information of at least one second RAN node.

[0497] Optionally, the perception node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0498] Optionally, the sensory capability-related information includes at least one of the following:

[0499] The sixth indication information is used to indicate whether the second RAN node supports the perception capability; for example, the perception capability support indication bit corresponding to the second RAN node is set to "TRUE" to indicate that the perception capability is supported, or the perception capability support indication bit includes a list of RAN node identifiers or a list of cell identifiers, indicating that the second RAN node corresponding to the list of RAN node identifiers or the list of cell identifiers supports the perception capability.

[0500] The sensing capability information supported by the second RAN node; for example, the sensing capability related information specifically indicates the sensing capability possessed by the second RAN node, such as sensing mode, sensing accuracy, etc.

[0501] In this embodiment, the source perception RAN node (i.e., the first RAN node) determines that the perception node needs to be switched, for example, when the UE moves, or the RAN node cannot meet the perception service requirements (such as: QoS requirements such as latency cannot be met). The source perception RAN node determines the target perception RAN node based on the received perception information measurement report, the perception capability related information of other RAN nodes, the UE mobility analysis information received from the NWDAF network element, and one or more of the target area information, the target object location information, etc.

[0502] Optionally, before the first RAN node determines the target perception node according to the perception node handover related information, the step includes:

[0503] When the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability, the first RAN node sends a request message to the first core network element;

[0504] The first RAN node receives a response message sent by the first core network element; wherein the response message carries perception capability information supported by the second RAN node.

[0505] For example: the perception capability related information received by the source perception RAN node (i.e., the first RAN node) indicates the capability of supporting the perception function, that is, indicating whether the second perception node supports the perception capability (for example: indicating that RAN node_1 supports the perception capability), then the source perception RAN node can request the SF network element to obtain the perception capability of the RAN node (for example: perception mode, perception accuracy, etc.), and the request information sent by the source perception RAN node may include the RAN node identifier of the RAN node.

[0506] Optionally, when the target perception node includes a target perception RAN node, the first RAN node performs a perception node switching process for the target perception node, including:

[0507] The first RAN node sends perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following:

[0508] Perceived resolution;

[0509] Perceptual accuracy;

[0510] Frame rate; for example: Frame rate = 25fps, which means the number of frames per second;

[0511] Perception time; for example, the perception time includes but is not limited to at least one of the following: perception duration (i.e., the length of time to perform perception), perception start time, perception cycle (i.e., how long it takes to perform perception once), feedback cycle (i.e., how long it takes to feedback perception data), feedback duration (i.e., how long it takes to feedback perception data);

[0512] Target area information; for example, the target area information specifically refers to the target area to be sensed; the target area information includes but is not limited to at least one of the following: indication information indicating a specific geographical area, one or more tracking area identifiers (TAI), and one or more cell identifiers;

[0513] Delay; for example: the delay includes but is not limited to at least one of the following: perception delay (i.e., the delay caused by the perception node performing the perception operation), the delay caused by the perception node from performing the perception operation to the SF network element receiving the perception data, etc.

[0514] Perceived target information; for example: the perceived target information may be terminal type, vehicle type, terminal identification, vehicle identification, location information, etc., but the embodiments of the present application are not limited thereto.

[0515] In this embodiment, the first RAN node sends perception assistance information to the target perception RAN node. The perception assistance information includes: perception resolution, perception accuracy, frame rate, perception time, target area information, latency, perceived target information, etc. This perception assistance information can be used for Per-Object perception scenarios. For example: for NG-based handover, the AMF network element sends a HANDOVER REQUEST message through NGAP to send the perception assistance information to the target perception RAN node. Or for Xn-based handover, the source perception RAN node sends a HANDOVER REQUESTmessage through XnAP to send the perception assistance information to the target perception RAN node. Or if the AMF network element also needs to be changed during the switching process, the source AMF network element can send the perception assistance information to the target AMF network element.

[0516] Optionally, in the case where the target perception node includes a target perception terminal, before the first RAN node determines the target perception node according to the perception node handover related information, at least one of the following is included:

[0517] The first RAN node determines the perception node switching related information according to the obtained terminal perception related information;

[0518] The first RAN node receives the sensing node switching related information sent by the source sensing terminal; for example: the first RAN node receives a fourth message sent by the source sensing terminal; wherein the fourth message carries the sensing node switching related information, and the sensing node switching related information includes but is not limited to at least one of the following:

[0519] Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0520] Perception information measurement report;

[0521] Fourth indication information, used to indicate switching perception nodes;

[0522] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0523] Optionally, the terminal perception-related information includes, but is not limited to: UE location, whether the UE can meet perception requirements (perception accuracy, latency, etc.).

[0524] In this embodiment, the first RAN node may determine that the perception terminal needs to be reselected based on the terminal perception related information in the area mastered, and determine the target perception terminal. The first RAN node may send the information of the target perception terminal to the SF network element. Alternatively, the source perception terminal and / or the target terminal may also actively request the RAN node to switch the perception node, that is, the source perception terminal and / or the target terminal may send a fourth message to the first RAN node to request the first RAN node to switch the perception node, etc. The embodiment of the present application is not limited to this.

[0525] Optionally, in a case where the target perception node includes a target perception terminal, the first RAN node performs a perception node switching process for the target perception node, including:

[0526] The first RAN node determines a target RAN node when determining that a RAN node serving the target perception terminal needs to be switched, and sends relevant information of the target perception terminal to the target RAN node;

[0527] and / or,

[0528] The first RAN node sends the relevant information of the target perception terminal to the first RAN node when determining that there is no need to switch to the RAN node serving the target perception terminal; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0529] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0530] In this embodiment, when the first RAN node determines that the perception terminal needs to be switched, it can further determine whether the RAN node needs to be switched. If the RAN node does not need to be switched (for example, the RAN node serving the source perception node can provide services for the target perception terminal), the first RAN node can obtain relevant information of the target perception terminal (for example, it can be obtained from the SF network element request), which is used for the first RAN node to establish a communication connection with the target perception terminal. If the RAN node needs to be switched (for example, the RAN node serving the source perception node cannot serve the target perception terminal), the first RAN node can reselect the target RAN node based on one or more of the target area information, the target object location information, the perception capability of the RAN node, the location of the perception node, the load, the authentication or authorization information, etc., and send the relevant information of the target perception terminal to the target RAN, which is used for the target RAN node to establish a communication connection with the target perception terminal.

[0531] like Fig.12 As shown, the embodiment of the present application provides a sensing node switching method, which specifically includes the following steps:

[0532] Step 121: The first core network element receives a request message sent by the first RAN node;

[0533] Step 122: The first core network element sends a response message to the first RAN node according to the request message; wherein the response message carries information related to the sensor node switching, and the information related to the sensor node switching is used by the first RAN node to perform the sensor node switching.

[0534] Optionally, the perception node switching related information includes perception capability information supported by at least one second RAN node, and the perception capability information supported by the second RAN node is used by the first RAN node to perform perception RAN node switching.

[0535] It should be noted that the perception node switching method on the first core network element side in the embodiment of the present application and the perception node switching method on the first wireless access network side are based on the same inventive concept. The two embodiments can refer to each other and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0536] like Fig.13 As shown, the embodiment of the present application provides a sensing node switching method, which specifically includes the following steps:

[0537] Step 131: The terminal sends perception node switching related information to the first RAN node; wherein the perception node switching related information is used by the first RAN node to perform perception node switching, and the perception node switching related information includes: perception information measurement report and / or perception capability related information of at least one second RAN node.

[0538] Optionally, the terminal sends a second message to the first RAN node; wherein the second message carries the perception information measurement report and / or perception capability related information of at least one second RAN node.

[0539] It should be noted that the perception node switching method on the terminal side in the embodiment of the present application and the perception node switching method on the first wireless access network side are based on the same inventive concept. The two embodiments can refer to each other and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0540] The following describes the sensing node switching method of the embodiment of the present application in combination with a specific embodiment:

[0541] Embodiment 3:

[0542] like Fig.14As shown, the RAN node needs to be switched as the sensing node, and the scenario is the same as that of Example 1. The difference is that in this embodiment, the source sensing RAN node selects the target sensing RAN node, and the SF network element can provide information to assist the selection.

[0543] Step 0a, the SF network element obtains the sensing capability from the RAN node and / or UE (sensing node UE), including the supported sensing modes (such as the base station self-transmitting and self-receiving mode, the "receiving" capability in the UE transmitting and receiving mode), the sensing accuracy in each supported sensing mode, the sensing delay, etc. For example: the sensing accuracy includes but is not limited to: sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, angle resolution, etc.

[0544] Step 0b: The source sensing RAN node and / or UE (such as sensing UE) performs sensing measurement and transmits the measurement data to the SF network element and / or AF network element through a control plane or a user plane path.

[0545] Step 1a: Each RAN node carries the sensing capability related information of the RAN node in a system broadcast message (e.g., SIB message). For example, the sensing capability related information may include at least one of the following:

[0546] The sixth indication information is used to indicate whether the second RAN node supports the perception capability; for example, the perception capability support indication bit corresponding to the second RAN node is set to "TRUE" to indicate that the perception capability is supported, or the perception capability support indication bit includes a list of RAN node identifiers or a list of cell identifiers, indicating that the second RAN node corresponding to the list of RAN node identifiers or the list of cell identifiers supports the perception capability.

[0547] The sensing capability information supported by the second RAN node; for example, the sensing capability related information specifically indicates the sensing capability possessed by the second RAN node, such as sensing mode, sensing accuracy, etc.

[0548] Step 1b: Optionally, the source sensing RAN node subscribes to the NWDAF network element for mobility analysis information of the UE (eg, sensing UE or target UE).

[0549] Step 2: The UE sends a perception information measurement report to the source perception RAN node, information related to the perception capability of each RAN node, etc. (for example, information related to the perception capability of each RAN node received by the terminal based on step 1a). The perception information measurement report includes but is not limited to at least one of the following: a signal measurement report (for example, a communication signal measurement report between the terminal and the RAN node), perception accuracy, latency, etc., and the embodiments of the present application are not limited thereto.

[0550] Step 3a: If the sensing capability-related information received by the source sensing RAN in step 2 is the sixth indication information, indicating that it supports the sensing function (for example, indicating that the RAN node_1 supports the sensing capability), the source sensing RAN node may request the SF network element to obtain the sensing capability (for example, sensing mode, sensing accuracy, etc.) supported by the RAN node_1, and the request information sent by the source sensing RAN node may include the RAN node identifier of the RAN node_1.

[0551] Step 3b, the source perception RAN node determines that the perception RAN node needs to be switched. For example, when the UE moves, or the source perception RAN node cannot meet the perception service requirements (such as: QoS requirements such as latency cannot be met), the source perception RAN node determines the target perception RAN node based on the received perception information measurement report, the perception capability related information of other RAN nodes, the UE mobility analysis information received from the NWDAF network element, and one or more of the target area information, the target object location information, etc.

[0552] Step 4: The source-aware RAN node may perform a RAN node switching process based on existing technologies, establish an association with the target-aware RAN node, etc.

[0553] Step 5: Send the perception assistance information to the target perception RAN node. The perception assistance information includes at least one of the following: perception resolution, perception accuracy, frame rate, perception time, target area information, latency, perceived target information, etc. This perception assistance information can be used in Per-Object perception scenarios.

[0554] For NG-based handover, the AMF network element can send the HANDOVER REQUEST message via NGAP to send the perception assistance information to the target perception RAN node.

[0555] For Xn-based handover, the source sensing RAN node can send a HANDOVER REQUEST message through XnAP to send the sensing assistance information to the target sensing RAN node.

[0556] If the AMF network element also needs to be changed during the switching process, the source AMF network element can also send the perception assistance information to the target AMF network element.

[0557] Optionally, the AMF network element or the source sensing RAN node or the target sensing RAN node sends a RAN switching indication to the SF network element, indicating that the sensing node is switched to the target sensing RAN node. Optionally, the RAN switching indication may include an identifier of the target sensing RAN node.

[0558] Step 6: The SF network element sends a sensing control request to the target RAN node to control the RAN to initiate detection and acquisition of sensing measurement data (e.g., configure the sensing distance / speed / angle resolution and accuracy, frame rate, sensing time, and sensing measurement data reporting period required for measurement). Optionally, the SF sends a sensing end indication to the source RAN node.

[0559] Embodiment 4:

[0560] like Fig.15 As shown, the UE needs to be reselected as the sensing node. Meanwhile, the RAN node as the sensing node can be switched or not. The scenario is the same as that of the first embodiment. The difference is that in this embodiment, the RAN node selects the target sensing UE.

[0561] Step 0a, the SF network element obtains the sensing capability from the RAN node and / or UE, including the supported sensing modes (such as the UE self-transmitting and self-receiving mode, the "receiving" capability in the UE transmitting and receiving mode), the sensing accuracy and sensing delay in each supported sensing mode, for example: the sensing accuracy includes but is not limited to: sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, angle resolution, etc.

[0562] Step 0b: The RAN node and / or the UE performs perception measurement and transmits the measurement data to the SF network element and / or the AF network element through a control plane or a user plane path.

[0563] Step 1: When the RAN node determines that it is necessary to reselect a sensing UE based on the UE sensing related information in the area, it determines the target sensing UE. The UE sensing related information includes but is not limited to: UE location, whether the UE can meet the sensing requirements (sensing accuracy, latency, etc.).

[0564] Step 2: The RAN node sends the information of the target sensing UE to the SF network element.

[0565] Step 3: Optionally, the SF network element and / or the RAN node determines whether it is necessary to switch the RAN node.

[0566] If the RAN node does not need to be switched (for example, the RAN node serving the source-aware UE can provide services for the target-aware UE), the SF network element can send relevant information of the target-aware UE to the RAN node for the RAN node to establish a communication connection with the target-aware UE.

[0567] If the RAN node needs to be switched (for example, the RAN node serving the source perception UE cannot serve the target perception UE), the SF network element and / or the source RAN node can reselect the target RAN node based on one or more of the target area information, the target object location information, the perception capability of the RAN node, the location of the perception node, the load, authentication or authorization information, etc., and send relevant information of the target perception UE to the target RAN node, so that the target RAN node can establish a communication connection with the target perception UE.

[0568] Step 4: The RAN node sends the information of the target perceived UE to the AMF network element.

[0569] Step 5: The SF network element sends a perception control request to the target perception UE (and RAN node) to control it to initiate detection and acquisition of perception measurement data. Optionally, the SF network element sends a perception end indication to the source perception UE (and source RAN node).

[0570] Step 6: The RAN node may exchange basic information with the target sensing UE, including sensing capability information, sensing resource requirement information, allocated sensing resource information, etc.

[0571] The above embodiments illustrate the perception node switching method of the present application. The corresponding devices, core network elements, access network elements, and terminals will be described below in conjunction with the accompanying drawings.

[0572] In order to better achieve the above goals, Fig.16 As shown, an embodiment of the present application provides a direct point switching device, including a memory 161, a transceiver 162, and a processor 163; wherein the memory 161 is used to store computer programs; the transceiver 162 is used to send and receive data under the control of the processor 163; such as the transceiver 162 is used to receive and send data under the control of the processor 163.

[0573] Specifically, as an embodiment, the processor 163 is used to read the computer program in the memory 161 and perform the following operations:

[0574] Receive information related to the switching of sensing nodes;

[0575] Determine a target sensing node according to the sensing node switching related information;

[0576] For the target sensing node, a sensing node switching process is performed.

[0577] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0578] Optionally, the sensing node switching related information includes at least one of the following:

[0579] The first indication information is used to indicate the switching perception node;

[0580] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0581] Perception information measurement report;

[0582] Identification information of the target sensing node;

[0583] Terminal mobility analysis information;

[0584] The location information of the terminal;

[0585] The terminal senses the contract information.

[0586] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0587] Receiving the sensing node switching related information sent by the source sensing RAN node or the terminal;

[0588] Receiving the sensing node switching related information sent by the second core network network element;

[0589] Receiving the sensing node switching related information sent by the third core network element;

[0590] Optionally, the perception node switching related information sent by the source perception RAN node or the terminal includes at least one of the following:

[0591] The first indication information is used to indicate a handover-aware RAN node;

[0592] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement;

[0593] Perception information measurement report;

[0594] identification information of the target sensing RAN node;

[0595] The source sensing RAN node provides the mobility analysis information of the sensing terminal;

[0596] The mobility analysis information of the sensed terminal provided by the source sensing RAN node;

[0597] Optionally, the sensing node switching related information sent by the second core network element includes: location information of the sensing terminal, and / or location information of the sensed terminal;

[0598] Optionally, the perception node switching related information sent by the third core network network element includes: mobility analysis information of the perception terminal, and / or mobility analysis information of the perceived terminal.

[0599] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0600] Sending a first subscription message to the source sensing RAN node or terminal; wherein the first subscription message is used to instruct the source sensing RAN node or terminal to send the sensing node switching related information;

[0601] Sending a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information;

[0602] Send a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information.

[0603] Optionally, in a case where the target aware node includes a target aware RAN node, the processor is configured to read a computer program in the memory and perform the following operations:

[0604] Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following:

[0605] Perceived resolution;

[0606] Perceptual accuracy;

[0607] Frame rate;

[0608] Perception of time;

[0609] Target area information;

[0610] Delay;

[0611] Perceived target information.

[0612] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0613] Receiving the sensing node switching related information sent by the source sensing terminal or the RAN node;

[0614] Receiving the sensing node switching related information sent by the fourth core network network element;

[0615] Optionally, the sensing node switching related information sent by the source sensing terminal or the RAN node includes at least one of the following:

[0616] The first indication information is used to indicate the handover perception terminal;

[0617] The second indication information is used to indicate whether the source sensing terminal meets the sensing requirement;

[0618] The perception node switching related information sent by the fourth core network network element includes the terminal perception subscription information, and the perception subscription information includes at least one of the following:

[0619] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0620] Perception of time;

[0621] Perceptual accuracy;

[0622] Perception area.

[0623] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0624] Send a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information.

[0625] Optionally, when the target sensing node includes a target sensing terminal, the processor is configured to read a computer program in the memory and perform the following operations:

[0626] In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node;

[0627] and / or,

[0628] When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0629] The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

[0630] In addition, as yet another embodiment, the processor is configured to read the computer program in the memory and perform the following operations:

[0631] receiving a request message sent by the first RAN node;

[0632] According to the request message, a response message is sent to the first RAN node; wherein the response message carries the sensor node switching related information, and the sensor node switching related information is used by the first RAN node to perform the sensor node switching.

[0633] Optionally, the perception node switching related information includes perception capability information supported by at least one second RAN node, and the perception capability information supported by the second RAN node is used by the first RAN node to perform perception RAN node switching.

[0634] Among them, Fig.16 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 163 and various circuits of memory represented by memory 161 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 162 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and the like. The processor 163 is responsible for managing the bus architecture and general processing, and the memory 161 may store data used by the processor 163 when performing operations.

[0635] The processor 163 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0636] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned core network network element side method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0637] like Fig.17 As shown, an embodiment of the present application provides a perception node switching device, including a memory 171, a transceiver 172, and a processor 173; wherein the memory 171 is used to store computer programs; the transceiver 172 is used to send and receive data under the control of the processor 173; such as the transceiver 172 is used to receive and send data under the control of the processor 173.

[0638] Specifically, as an embodiment, the processor 173 is used to read the computer program in the memory 171 and perform the following operations:

[0639] Determine the target sensing node according to the relevant information of the sensing node switching;

[0640] For the target sensing node, a sensing node switching process is performed.

[0641] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0642] Optionally, when the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following:

[0643] Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0644] Terminal mobility analysis information;

[0645] Perception information measurement report;

[0646] Fourth indication information, used to indicate switching perception nodes;

[0647] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0648] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0649] receiving the perception node switching related information sent by the second RAN node; wherein the perception node switching related information sent by the second RAN node includes perception capability related information of the second RAN node;

[0650] Receiving the perception node switching related information sent by the terminal; wherein the perception node switching related information sent by the terminal includes: a perception information measurement report and / or perception capability related information of at least one second RAN node;

[0651] Receive the perception node switching related information sent by the third core network network element; wherein the perception node switching related information sent by the third core network includes the mobility analysis information of the terminal.

[0652] Optionally, the sensory capability-related information includes at least one of the following:

[0653] Sixth indication information, used to indicate whether the second RAN node supports the sensing capability;

[0654] The sensing capability information supported by the second RAN node.

[0655] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0656] When the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability, sending a request message to the first core network element;

[0657] Receive a response message sent by the first core network element; wherein the response message carries perception capability information supported by the second RAN node.

[0658] Optionally, when the target-aware node includes a target-aware RAN node, the processor is configured to read a computer program in the memory and perform the following operations:

[0659] Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following:

[0660] Perceived resolution;

[0661] Perceptual accuracy;

[0662] Frame rate;

[0663] Perception of time;

[0664] Target area information;

[0665] Delay;

[0666] Perceived target information.

[0667] Optionally, when the target sensing node includes a target sensing terminal, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0668] Determine the sensing node switching related information according to the obtained terminal sensing related information;

[0669] The sensing node switching related information sent by the source sensing terminal is received.

[0670] Optionally, when the target sensing node includes a target sensing terminal, the processor is configured to read a computer program in the memory and perform the following operations:

[0671] In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node;

[0672] and / or,

[0673] When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0674] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0675] In addition, as yet another embodiment, the processor is configured to read the computer program in the memory and perform the following operations:

[0676] Sending the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

[0677] Among them, Fig.17 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 173 and various circuits of memory represented by memory 171 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 172 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and the like. The processor 173 is responsible for managing the bus architecture and general processing, and the memory 171 may store data used by the processor 173 when performing operations.

[0678] The processor 173 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0679] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment on the wireless access network side, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be described in detail here.

[0680] like Fig.18 As shown, this embodiment provides a perception node switching device, including a memory 181, a transceiver 182, and a processor 183; wherein the memory 181 is used to store computer programs; the transceiver 182 is used to send and receive data under the control of the processor 183; such as the transceiver 182 is used to receive and send data under the control of the processor 183.

[0681] Specifically, as an embodiment, the processor 183 is used to read the computer program in the memory 181 and perform the following operations:

[0682] Sending the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

[0683] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0684] Optionally, the sensing node switching related information includes at least one of the following:

[0685] The first indication information is used to indicate the switching perception node;

[0686] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0687] Perception information measurement report.

[0688] In addition, as yet another embodiment, the processor is configured to read the computer program in the memory and perform the following operations:

[0689] The terminal sends the perception node handover related information to the first RAN node; wherein the perception node handover related information is used by the first RAN node to perform the perception node handover, and the perception node handover related information includes: a perception information measurement report and / or perception capability related information of at least one second RAN node. .

[0690] Among them, Fig.18In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 183 and various circuits of memory represented by memory 181 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 182 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 184 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0691] The processor 183 is responsible for managing the bus architecture and general processing, and the memory 181 can store data used by the processor 183 when performing operations.

[0692] Optionally, the processor 183 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0693] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0694] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned terminal side method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0695] The embodiment of the present application further provides a core network network element, wherein the core network network element is a first core network network element, including:

[0696] A receiving unit, used to receive information related to the switching of the sensing node;

[0697] A determination unit, configured to determine a target sensing node according to the sensing node switching related information;

[0698] The processing unit is used to execute a sensing node switching process for the target sensing node.

[0699] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0700] Optionally, the sensing node switching related information includes at least one of the following:

[0701] The first indication information is used to indicate the switching perception node;

[0702] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0703] Perception information measurement report;

[0704] Identification information of the target sensing node;

[0705] Terminal mobility analysis information;

[0706] The location information of the terminal;

[0707] The terminal senses the contract information.

[0708] Optionally, the receiving unit is further used for at least one of the following:

[0709] Receiving the sensing node switching related information sent by the source sensing RAN node or the terminal;

[0710] Receiving the sensing node switching related information sent by the second core network network element;

[0711] Receiving the sensing node switching related information sent by the third core network element. ;

[0712] Optionally, the perception node switching related information sent by the source perception RAN node or the terminal includes at least one of the following:

[0713] The first indication information is used to indicate a handover-aware RAN node;

[0714] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement;

[0715] Perception information measurement report;

[0716] identification information of the target sensing RAN node;

[0717] The source sensing RAN node provides the mobility analysis information of the sensing terminal;

[0718] The mobility analysis information of the sensed terminal provided by the source sensing RAN node;

[0719] Optionally, the sensing node switching related information sent by the second core network element includes: location information of the sensing terminal, and / or location information of the sensed terminal;

[0720] Optionally, the perception node switching related information sent by the third core network network element includes: mobility analysis information of the perception terminal, and / or mobility analysis information of the perceived terminal.

[0721] Optionally, the core network element further includes at least one of the following:

[0722] A first sending unit, configured to send a first subscription message to the source sensing RAN node or terminal; wherein the first subscription message is used to instruct the source sensing RAN node or terminal to send the sensing node switching related information;

[0723] A second sending unit, configured to send a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information;

[0724] The third sending unit is used to send a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information.

[0725] Optionally, when the target aware node includes a target aware RAN node, the processing unit is further configured to:

[0726] Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following:

[0727] Perceived resolution;

[0728] Perceptual accuracy;

[0729] Frame rate;

[0730] Perception of time;

[0731] Target area information;

[0732] Delay;

[0733] Perceived target information.

[0734] Optionally, the receiving unit is further used for at least one of the following:

[0735] Receiving the sensing node switching related information sent by the source sensing terminal or the RAN node;

[0736] Receive the perception node switching related information sent by the fourth core network network element.

[0737] Optionally, the sensing node switching related information sent by the source sensing terminal or the RAN node includes at least one of the following:

[0738] The first indication information is used to indicate the handover perception terminal;

[0739] The second indication information is used to indicate whether the source sensing terminal meets the sensing requirement;

[0740] Optionally, the perception node switching related information sent by the fourth core network network element includes the terminal perception subscription information, and the perception subscription information includes at least one of the following:

[0741] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0742] Perception of time;

[0743] Perceptual accuracy;

[0744] Perception area.

[0745] Optionally, the core network element further includes at least one of the following:

[0746] A fourth sending unit is used to send a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information.

[0747] Optionally, when the target sensing node includes a target sensing terminal, the processing unit is further configured to:

[0748] In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node;

[0749] and / or,

[0750] When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0751] The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

[0752] The embodiment of the present application further provides a wireless access network node, including:

[0753] A sending unit is used to send the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

[0754] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0755] Optionally, the sensing node switching related information includes at least one of the following:

[0756] The first indication information is used to indicate the switching perception node;

[0757] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0758] Identification information of the target sensing node;

[0759] Mobility analysis information of the terminal.

[0760] The present application also provides a terminal, including:

[0761] A sending unit is used to send the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

[0762] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0763] Optionally, the sensing node switching related information includes at least one of the following:

[0764] The first indication information is used to indicate the switching perception node;

[0765] The second indication information is used to indicate whether the source sensing node meets the sensing requirement;

[0766] Perception information measurement report.

[0767] The embodiment of the present application further provides a radio access network node, where the radio access network node is a first RAN node, including:

[0768] A first determining unit, configured to determine a target sensing node according to sensing node switching related information;

[0769] The processing unit is used to execute a sensing node switching process for the target sensing node.

[0770] Optionally, the perception node includes: a perception RAN node, and / or a perception terminal.

[0771] Optionally, when the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following:

[0772] Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0773] Terminal mobility analysis information;

[0774] Perception information measurement report;

[0775] Fourth indication information, used to indicate switching perception nodes;

[0776] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0777] Optionally, the wireless access network node further includes at least one of the following:

[0778] A first receiving unit, configured to receive the sensing node switching related information sent by a second RAN node;

[0779] A second receiving unit, configured to receive the sensing node switching related information sent by a terminal;

[0780] The third receiving unit is used to receive the perception node switching related information sent by the third core network element.

[0781] Optionally, the perception node switching related information sent by the second RAN node includes perception capability related information of the second RAN node;

[0782] Optionally, the perception node handover related information sent by the terminal includes: a perception information measurement report and / or perception capability related information of at least one second RAN node;

[0783] Optionally, the perception node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0784] Optionally, the sensory capability-related information includes at least one of the following:

[0785] Sixth indication information, used to indicate whether the second RAN node supports the sensing capability;

[0786] The sensing capability information supported by the second RAN node.

[0787] Optionally, the wireless access network node further includes:

[0788] A sending unit, configured to send a request message to a first core network element when the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability;

[0789] The fourth receiving unit is used to receive a response message sent by the first core network element; wherein the response message carries the perception capability information supported by the second RAN node.

[0790] Optionally, when the target-aware node includes a target-aware RAN node, the processing unit is further configured to:

[0791] Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following:

[0792] Perceived resolution;

[0793] Perceptual accuracy;

[0794] Frame rate;

[0795] Perception of time;

[0796] Target area information;

[0797] Delay;

[0798] Perceived target information.

[0799] Optionally, when the target sensing node includes a target sensing terminal, the wireless access network node further includes at least one of the following:

[0800] A second determining unit, configured to determine the sensing node switching related information according to the obtained terminal sensing related information;

[0801] The fifth receiving unit is used to receive the perception node switching related information sent by the source perception terminal.

[0802] Optionally, when the target sensing node includes a target sensing terminal, the processing unit is further configured to:

[0803] In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node;

[0804] and / or,

[0805] When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal;

[0806] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0807] The embodiment of the present application further provides a core network network element, wherein the core network network element is a first core network network element, including:

[0808] A receiving unit, configured to receive a request message sent by the first RAN node;

[0809] A sending unit is configured to send a response message to the first RAN node according to the request message; wherein the response message carries the sensor node switching related information, and the sensor node switching related information is used by the first RAN node to perform the sensor node switching.

[0810] Optionally, the perception node switching related information includes perception capability information supported by at least one second RAN node, and the perception capability information supported by the second RAN node is used by the first RAN node to perform perception RAN node switching.

[0811] The present application also provides a terminal, including:

[0812] A sending unit, configured to send the sensing node handover related information to the first RAN node; wherein the sensing node handover related information is used by the first RAN node to perform the sensing node handover, and the sensing node handover related information includes: a sensing information measurement report and / or sensing capability related information of at least one second RAN node. .

[0813] It should be noted here that the above-mentioned core network network element provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned core network network element side method embodiment, the above-mentioned wireless access network node provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned wireless access network node side method embodiment, and the above-mentioned terminal provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned terminal side method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0814] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0815] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0816] An embodiment of the present application also provides a processor-readable storage medium, which stores a computer program. The computer program is used to enable the processor to execute the steps of the above-mentioned method for perceiving node switching, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0817] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0818] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0819] The present application is described with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box in the flowchart and / or block diagram can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the function specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0820] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0821] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0822] In addition, it should be noted that in the device and method of the present application, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present application. In addition, the steps of performing the above-mentioned series of processes can be naturally performed in chronological order according to the order of description, but it is not necessary to perform in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it is possible to understand that all or any steps or components of the method and device of the present application can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices with hardware, firmware, software or a combination thereof, which can be realized by those of ordinary skill in the art using their basic programming skills after reading the description of the present application.

[0823] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A sensing node switching method, characterized in that: include: The first core network element receives information related to the switching of the sensing node; The first core network element determines a target sensing node according to the sensing node switching related information; The first core network element performs a perception node switching process for the target perception node.

2. The sensing node switching method according to claim 1, characterized in that: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

3. The sensing node switching method according to claim 1 or 2, characterized in that: The sensing node switching related information includes at least one of the following: The first indication information is used to indicate the switching perception node; The second indication information is used to indicate whether the source sensing node meets the sensing requirement; Perception information measurement report; Identification information of the target sensing node; Terminal mobility analysis information; The location information of the terminal; The terminal senses the contract information.

4. The sensing node switching method according to claim 1 or 3, characterized in that: The first core network element receives the information related to the switching of the sensing node, including at least one of the following: The first core network element receives the sensing node switching related information sent by the source sensing RAN node or the terminal; The first core network element receives the sensing node switching related information sent by the second core network element; The first core network element receives the perception node switching related information sent by the third core network element.

5. The sensing node switching method according to claim 4, characterized in that: The sensing node handover related information sent by the source sensing RAN node or the terminal includes at least one of the following: The first indication information is used to indicate a handover-aware RAN node; The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement; Perception information measurement report; identification information of the target sensing RAN node; The source sensing RAN node provides the mobility analysis information of the sensing terminal; The mobility analysis information of the sensed terminal provided by the source sensing RAN node; The sensing node switching related information sent by the second core network element includes: location information of the sensing terminal and / or location information of the sensed terminal; The perception node switching related information sent by the third core network element includes: mobility analysis information of the perception terminal and / or mobility analysis information of the perceived terminal.

6. The sensing node switching method according to claim 4 or 5, characterized in that: Before the first core network element receives the information related to the switching of the sensing node, at least one of the following is also included: The first core network element sends a first subscription message to the source perception RAN node or terminal; wherein the first subscription message is used to instruct the source perception RAN node or terminal to send the perception node switching related information; The first core network element sends a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information; The first core network element sends a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information.

7. The sensing node switching method according to claim 1, characterized in that: In a case where the target perception node includes a target perception RAN node, the first core network element performs a perception node switching process for the target perception node, including: The first core network element sends the perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following: Perceived resolution; Perceptual accuracy; Frame rate; Perception of time; Target area information; Delay; Perceived target information.

8. The sensing node switching method according to claim 1 or 3, characterized in that: The first core network element receives the information related to the switching of the sensing node, including at least one of the following: The first core network element receives the sensing node switching related information sent by the source sensing terminal or the RAN node; The first core network element receives the perception node switching related information sent by the fourth core network element.

9. The sensing node switching method according to claim 8, characterized in that: The sensing node handover related information sent by the source sensing terminal or the RAN node includes at least one of the following: The first indication information is used to indicate the handover perception terminal; The second indication information is used to indicate whether the source sensing terminal meets the sensing requirement; The perception node switching related information sent by the fourth core network network element includes terminal perception subscription information, and the terminal perception subscription information includes at least one of the following: The third indication information is used to indicate whether the terminal is allowed to be sensed; Perception of time; Perceptual accuracy; Perception area.

10. The sensing node switching method according to claim 8 or 9, characterized in that: Before the first core network element receives the information related to the switching of the sensing node, at least one of the following is also included: The first core network element sends a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information.

11. The sensing node switching method according to claim 1 or 8, characterized in that: In a case where the target perception node includes a target perception terminal, the first core network element performs a perception node switching process for the target perception node, including: The first core network element determines a target RAN node when determining that a RAN node serving the target perception terminal needs to be switched, and sends relevant information of the target perception terminal to the target RAN node; and / or, The first core network element sends the relevant information of the target perception terminal to the first RAN node when determining that there is no need to switch to the RAN node serving the target perception terminal; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal; The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

12. A sensing node switching method, characterized in that: include: The radio access network RAN ​​node sends the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

13. The sensing node switching method according to claim 12, characterized in that: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

14. The sensing node switching method according to claim 12 or 13, characterized in that: The sensing node switching related information includes at least one of the following: The first indication information is used to indicate the switching perception node; The second indication information is used to indicate whether the source sensing node meets the sensing requirement; Identification information of the target sensing node; Mobility analysis information of the terminal.

15. A sensing node switching method, characterized in that: include: The terminal sends the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

16. The sensing node switching method according to claim 15, characterized in that: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

17. The sensing node switching method according to claim 15 or 16, characterized in that: The sensing node switching related information includes at least one of the following: The first indication information is used to indicate the switching perception node; The second indication information is used to indicate whether the source sensing node meets the sensing requirement; Perception information measurement report.

18. A sensing node switching method, characterized in that: include: The first radio access network RAN ​​node determines a target perception node according to the perception node handover related information; The first RAN node performs a sensor node switching process for the target sensor node.

19. The sensing node switching method according to claim 18, characterized in that: The perception node includes: a perception RAN node and / or a perception terminal.

20. The sensing node switching method according to claim 18 or 19, characterized in that: When the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following: Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node; Terminal mobility analysis information; Perception information measurement report; Fourth indication information, used to indicate switching perception nodes; The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

21. The sensing node switching method according to claim 18 or 20, characterized in that: Before the first radio access network RAN ​​node determines the target perception node according to the perception node handover related information, the method further includes at least one of the following: The first RAN node receives the sensing node switching related information sent by the second RAN node; The first RAN node receives the sensing node switching related information sent by the terminal; The first RAN node receives the perception node switching related information sent by the third core network element.

22. The sensing node switching method according to claim 21, characterized in that: The sensing node switching related information sent by the second RAN node includes sensing capability related information of the second RAN node; The sensing node handover related information sent by the terminal includes: a sensing information measurement report and / or sensing capability related information of at least one second RAN node; The perception node switching related information sent by the third core network element includes mobility analysis information of the terminal.

23. The sensing node switching method according to claim 20 or 22, characterized in that: The sensory capability related information includes at least one of the following: Sixth indication information, used to indicate whether the second RAN node supports the sensing capability; The sensing capability information supported by the second RAN node.

24. The sensing node switching method according to claim 23, characterized in that: Before the first radio access network RAN ​​node determines the target perception node according to the perception node handover related information, the method includes: When the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability, the first RAN node sends a request message to the first core network element; The first RAN node receives a response message sent by the first core network element; wherein the response message carries perception capability information supported by the second RAN node.

25. The sensing node switching method according to claim 18, characterized in that: When the target perception node includes a target perception RAN node, the first RAN node performs a perception node switching process for the target perception node, including: The first RAN node sends perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following: Perceived resolution; Perceptual accuracy; Frame rate; Perception of time; Target area information; Delay; Perceived target information.

26. The sensing node switching method according to claim 18 or 20, characterized in that: In the case where the target perception node includes a target perception terminal, the first radio access network RAN ​​node determines the target perception node according to the perception node handover related information, including at least one of the following: The first RAN node determines the perception node switching related information according to the obtained terminal perception related information; The first RAN node receives the perception node switching related information sent by the source perception terminal.

27. The sensing node switching method according to claim 18 or 26, characterized in that: In a case where the target perception node includes a target perception terminal, the first RAN node performs a perception node switching process for the target perception node, including: The first RAN node determines a target RAN node when determining that a RAN node serving the target perception terminal needs to be switched, and sends relevant information of the target perception terminal to the target RAN node; and / or, The first RAN node sends the relevant information of the target perception terminal to the first RAN node when determining that there is no need to switch to the RAN node serving the target perception terminal; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal; The relevant information of the target perception terminal is used to provide services for the target perception terminal.

28. A sensing node switching device, characterized in that: Including memory, transceiver, processor; The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Receive information related to the switching of sensing nodes; Determine a target sensing node according to the sensing node switching related information; For the target sensing node, a sensing node switching process is performed.

29. The sensing node switching device according to claim 28, characterized in that: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

30. The sensing node switching device according to claim 28 or 29, characterized in that: The sensing node switching related information includes at least one of the following: The first indication information is used to indicate the switching perception node; The second indication information is used to indicate whether the source sensing node meets the sensing requirement; Perception information measurement report; Identification information of the target sensing node; Terminal mobility analysis information; The location information of the terminal; The terminal senses the contract information.

31. The sensing node switching device according to claim 28 or 30, characterized in that: The processor is configured to read the computer program in the memory and perform at least one of the following operations: Receiving the sensing node switching related information sent by the source sensing RAN node or the terminal; Receiving the sensing node switching related information sent by the second core network network element; Receiving the sensing node switching related information sent by the third core network element; The sensing node switching related information sent by the source sensing RAN node or the terminal includes at least one of the following: The first indication information is used to indicate a handover-aware RAN node; The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirement; Perception information measurement report; identification information of the target sensing RAN node; The source sensing RAN node provides the mobility analysis information of the sensing terminal; The mobility analysis information of the sensed terminal provided by the source sensing RAN node; The sensing node switching related information sent by the second core network element includes: location information of the sensing terminal and / or location information of the sensed terminal; Among them, the perception node switching related information sent by the third core network network element includes: mobility analysis information of the perception terminal, and / or mobility analysis information of the perceived terminal.

32. The sensing node switching device according to claim 31, characterized in that: The processor is configured to read the computer program in the memory and perform at least one of the following operations: Sending a first subscription message to the source sensing RAN node or terminal; wherein the first subscription message is used to instruct the source sensing RAN node or terminal to send the sensing node switching related information; Sending a second subscription message to the second core network element; wherein the second subscription message is used to instruct the second core network element to send the sensing node switching related information; Send a third subscription message to the third core network element; wherein the third subscription message is used to instruct the third core network element to send the perception node switching related information.

33. The sensing node switching device according to claim 28, characterized in that: In the case where the target aware node comprises a target aware RAN node, the processor is configured to read the computer program in the memory and perform the following operations: Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the perception assistance information includes at least one of the following: Perceived resolution; Perceptual accuracy; Frame rate; Perception of time; Target area information; Delay; Perceived target information.

34. The sensing node switching device according to claim 28 or 30, characterized in that: The processor is configured to read the computer program in the memory and perform at least one of the following operations: Receiving the sensing node switching related information sent by the source sensing terminal or the RAN node; Receiving the sensing node switching related information sent by the fourth core network network element; The sensing node switching related information sent by the source sensing terminal or the RAN node includes at least one of the following: The first indication information is used to indicate the handover perception terminal; The second indication information is used to indicate whether the source sensing terminal meets the sensing requirement; The perception node switching related information sent by the fourth core network network element includes terminal perception subscription information, and the terminal perception subscription information includes at least one of the following: The third indication information is used to indicate whether the terminal is allowed to be sensed; Perception of time; Perceptual accuracy; Perception area.

35. The sensing node switching device according to claim 34, characterized in that: The processor is configured to read the computer program in the memory and perform at least one of the following operations: Send a fourth subscription message to the source perception terminal or the RAN node; wherein the fourth subscription message is used to instruct the source perception terminal or the RAN node to send the perception node switching related information.

36. The sensing node switching device according to claim 28 or 34, characterized in that: In the case where the target sensing node includes a target sensing terminal, the processor is configured to read the computer program in the memory and perform the following operations: In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node; and / or, When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal; The relevant information of the target perception terminal is used for the target RAN node and / or the first RAN node to establish a communication connection with the target perception terminal.

37. A core network element, characterized in that: The core network element is a first core network element, including: A receiving unit, used to receive information related to the switching of the sensing node; A determination unit, configured to determine a target sensing node according to the sensing node switching related information; The processing unit is used to execute a sensing node switching process for the target sensing node.

38. A sensing node switching device, characterized in that: Including memory, transceiver, processor; The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Sending the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

39. The sensing node switching device according to claim 38, characterized in that: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

40. The sensing node switching device according to claim 38 or 39, characterized in that: The sensing node switching related information includes at least one of the following: The first indication information is used to indicate the switching perception node; The second indication information is used to indicate whether the source sensing node meets the sensing requirement; Identification information of the target sensing node; Mobility analysis information of the terminal.

41. A wireless access network node, characterized in that: include: A sending unit is used to send the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

42. A sensing node switching device, characterized in that: Including memory, transceiver, processor; The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Sending the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform the perception node switching.

43. The sensing node switching device according to claim 42, characterized in that: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

44. The sensing node switching device according to claim 42 or 43, characterized in that: The sensing node switching related information includes at least one of the following: The first indication information is used to indicate the switching perception node; The second indication information is used to indicate whether the source sensing node meets the sensing requirement; Perception information measurement report.

45. A terminal, characterized in that: include: A sending unit is used to send the perception node switching related information to the first core network element; wherein the perception node switching related information is used by the first core network element to perform perception node switching.

46. ​​A sensing node switching device, characterized in that: Including memory, transceiver, processor; The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Determine the target sensing node according to the relevant information of the sensing node switching; For the target sensing node, a sensing node switching process is performed.

47. The sensing node switching device according to claim 46, characterized in that: The perception node includes: a perception RAN node and / or a perception terminal.

48. The sensing node switching device according to claim 46, characterized in that: When the target perception node includes a target perception RAN node, the perception node handover related information includes at least one of the following: Information related to the sensing capability of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node; Terminal mobility analysis information; Perception information measurement report; Fourth indication information, used to indicate switching perception nodes; The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

49. The sensing node switching device according to claim 46 or 48, characterized in that: The processor is configured to read the computer program in the memory and perform at least one of the following operations: receiving the perception node switching related information sent by the second RAN node; wherein the perception node switching related information sent by the second RAN node includes perception capability related information of the second RAN node; Receiving the perception node switching related information sent by the terminal; wherein the perception node switching related information sent by the terminal includes: a perception information measurement report and / or perception capability related information of at least one second RAN node; Receive the perception node switching related information sent by the third core network network element; wherein the perception node switching related information sent by the third core network includes the mobility analysis information of the terminal.

50. The sensing node switching device according to claim 48 or 49, characterized in that: The sensory capability related information includes at least one of the following: Sixth indication information, used to indicate whether the second RAN node supports the sensing capability; The sensing capability information supported by the second RAN node.

51. The sensing node switching device according to claim 50, characterized in that: The processor is configured to read the computer program in the memory and perform the following operations: When the sixth indication information in the sensing capability related information indicates that the second RAN node supports the sensing capability, sending a request message to the first core network element; Receive a response message sent by the first core network element; wherein the response message carries perception capability information supported by the second RAN node.

52. The sensing node switching device according to claim 46, characterized in that: In a case where the target-aware node includes a target-aware RAN node, the processor is configured to read a computer program in the memory and perform the following operations: Sending perception assistance information to the target perception RAN node; wherein the perception assistance information is used by the target perception RAN node to provide a perception service, and the assistance information includes at least one of the following: Perceived resolution; Perceptual accuracy; Frame rate; Perception of time; Target area information; Delay; Perceived target information.

53. The sensing node switching device according to claim 46 or 48, characterized in that: In the case where the target sensing node includes a target sensing terminal, the processor is configured to read the computer program in the memory and perform at least one of the following operations: Determine the sensing node switching related information according to the obtained terminal sensing related information; The sensing node switching related information sent by the source sensing terminal is received.

54. The sensing node switching device according to claim 46 or 53, characterized in that: In the case where the target sensing node includes a target sensing terminal, the processor is configured to read the computer program in the memory and perform the following operations: In the case where it is determined that a RAN node serving the target perception terminal needs to be switched, determining a target RAN node, and sending relevant information of the target perception terminal to the target RAN node; and / or, When it is determined that there is no need to switch to the RAN node serving the target perception terminal, sending relevant information of the target perception terminal to the first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before switching the perception terminal; The relevant information of the target perception terminal is used to provide services for the target perception terminal.

55. A wireless access network node, characterized in that: The radio access network node is a first radio access network RAN ​​node, including: A first determining unit, configured to determine a target sensing node according to sensing node switching related information; The processing unit is used to execute a sensing node switching process for the target sensing node.

56. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the steps of the perception node switching method according to any one of claims 1 to 27.

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