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

Abstract

The present disclosure relates to the technical field of communications. Provided are a sensing node switching method, a core network element, a radio access network node, and a terminal. The method comprises: a first core network element receiving information related to sensing node switching; the first core network element determining a target sensing node on the basis of the information related to sensing node switching; and the first core network element executing a sensing node switching process for the target sensing node.

Description

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

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on August 29, 2023, with application number 202311103231.0 and application name “Perception node switching method, core network network element, wireless access network node and terminal”, the entire contents of which are incorporated by reference in this disclosure. Technical Field

[0002] The present disclosure 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

[0003] To ensure interawareness service continuity, it may be necessary to switch perception nodes. For example, perception nodes can be Radio Access Network (RAN) nodes or terminals. However, current communication technologies do not support the network side's reselection of appropriate perception nodes that meet perception requirements. Therefore, it is impossible to ensure interawareness service continuity by switching perception nodes.

[0004] Summary of the Invention

[0005] The present disclosure 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 ensure the continuity of the interawareness service.

[0006] An embodiment of the present disclosure provides a sensing node switching method, including:

[0007] The first core network element receives information related to the switching of the sensing node;

[0008] The first core network element determines a target sensing node according to the sensing node handover related information;

[0009] The first core network element performs a perception node switching process for the target perception node.

[0010] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0011] In some embodiments, the sensing node handover related information includes at least one of the following:

[0012] The first indication information is used to instruct the switching perception node;

[0013] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0014] Perception information measurement report;

[0015] Identification information of the target sensing node;

[0016] Terminal mobility analysis information;

[0017] Terminal location information;

[0018] The terminal perceives the contract information.

[0019] In some embodiments, the first core network element receives the information related to the sensor node handover, including at least one of the following:

[0020] The first core network element receives the perception node handover related information sent by the source perception RAN node or the terminal;

[0021] The first core network element receives the sensing node switching related information sent by the second core network element;

[0022] The first core network element receives the perception node switching related information sent by the third core network element.

[0023] In some embodiments, the sensing node handover related information sent by the source sensing RAN node or terminal includes at least one of the following:

[0024] The first indication information is used to indicate the handover-aware RAN node;

[0025] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirements;

[0026] Perception information measurement report;

[0027] identification information of the target sensing RAN node;

[0028] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0029] The source perceives the mobility analysis information of the perceived terminal provided by the RAN node.

[0030] In some embodiments, the sensing node handover related information sent by the second core network element includes: location information of the sensing terminal and / or location information of the sensed terminal;

[0031] In some embodiments, the perception node handover 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.

[0032] In some embodiments, before the first core network element receives the sensing node switching related information, the process further includes at least one of the following:

[0033] 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 handover related information;

[0034] 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;

[0035] 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.

[0036] In some embodiments, 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:

[0037] The first core network element 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 perception assistance information includes at least one of the following:

[0038] Perceived resolution;

[0039] Perceptual accuracy;

[0040] Frame rate;

[0041] Perception of time;

[0042] Target area information;

[0043] Delay;

[0044] Perceived target information.

[0045] In some embodiments, the first core network element receives the information related to the sensor node handover, including at least one of the following:

[0046] The first core network element receives the perception node handover related information sent by the source perception terminal or the RAN node;

[0047] The first core network element receives the perception node switching related information sent by the fourth core network element.

[0048] In some embodiments, the sensing node handover related information sent by the source sensing terminal or RAN node includes at least one of the following:

[0049] The first indication information is used to instruct the handover perception terminal;

[0050] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0051] In some embodiments, the perception node handover related information sent by the fourth core network element includes terminal perception subscription information, and the terminal perception subscription information includes at least one of the following:

[0052] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0053] Perception of time;

[0054] Perceptual accuracy;

[0055] Perception area.

[0056] In some embodiments, before the first core network element receives the sensing node switching related information, the process further includes at least one of the following:

[0057] 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.

[0058] In some embodiments, when the target sensing node includes a target sensing terminal, the first core network element performs a sensing node switching process for the target sensing node, including:

[0059] The first core network element determines a target RAN node when determining that a handover is required to the RAN node serving the target perception terminal, and sends relevant information of the target perception terminal to the target RAN node;

[0060] and / or,

[0061] 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 the switching of the perception terminal;

[0062] 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.

[0063] The present disclosure provides a method for switching a sensing node, including:

[0064] 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.

[0065] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0066] In some embodiments, the sensing node handover related information includes at least one of the following:

[0067] The first indication information is used to instruct the switching perception node;

[0068] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0069] Identification information of the target sensing node;

[0070] Mobility analysis information of the terminal.

[0071] The present disclosure provides a method for switching a sensing node, including:

[0072] 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.

[0073] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0074] In some embodiments, the sensing node handover related information includes at least one of the following:

[0075] The first indication information is used to instruct the switching perception node;

[0076] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0077] Perception information measurement report.

[0078] The present disclosure provides a method for switching a sensing node, including:

[0079] The first RAN node determines a target sensing node based on the sensing node handover related information;

[0080] The first RAN node performs a perception node switching process for the target perception node.

[0081] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0082] In some embodiments, when the target sensing node includes a target sensing RAN node, the sensing node handover related information includes at least one of the following:

[0083] Information related to sensing capabilities of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0084] Terminal mobility analysis information;

[0085] Perception information measurement report;

[0086] Fourth indication information, used to instruct the switching perception node;

[0087] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0088] In some embodiments, before the first RAN node determines the target perception node based on the perception node handover related information, the method further includes at least one of the following:

[0089] The first RAN node receives the sensing node handover related information sent by the second RAN node;

[0090] The first RAN node receives the sensing node handover related information sent by the terminal;

[0091] The first RAN node receives the perception node switching related information sent by the third core network element.

[0092] In some embodiments, the sensing node handover related information sent by the second RAN node includes sensing capability related information of the second RAN node.

[0093] In some embodiments, 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.

[0094] In some embodiments, the sensing node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0095] In some embodiments, the sensory capability-related information includes at least one of the following:

[0096] Sixth indication information, used to indicate whether the second RAN node supports sensing capability;

[0097] Sensing capability information supported by the second RAN node.

[0098] In some embodiments, before the first RAN node determines the target perception node based on the perception node handover related information, the method includes:

[0099] 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;

[0100] 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.

[0101] In some embodiments, when the target perception node includes a target perception RAN node, the first RAN node performs a perception node handover process for the target perception node, including:

[0102] 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:

[0103] Perceived resolution;

[0104] Perceptual accuracy;

[0105] Frame rate;

[0106] Perception of time;

[0107] Target area information;

[0108] Delay;

[0109] Perceived target information.

[0110] In some embodiments, when the target perception node includes a target perception terminal, the first RAN node, before determining the target perception node based on the perception node handover related information, includes at least one of the following:

[0111] The first RAN node determines the perception node handover related information based on the obtained terminal perception related information;

[0112] The first RAN node receives the perception node handover related information sent by the source perception terminal.

[0113] In some embodiments, when the target perception node includes a target perception terminal, the first RAN node performs a perception node handover process for the target perception node, including:

[0114] The first RAN node determines a target RAN node when determining that a switch is required to the RAN node serving the target perception terminal, and sends relevant information of the target perception terminal to the target RAN node;

[0115] and / or,

[0116] 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 the switching of the perception terminal;

[0117] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0118] The embodiment of the present disclosure provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0119] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0120] Receive information related to sensor node switching;

[0121] Determining a target sensing node based on the sensing node switching related information;

[0122] A sensing node switching process is performed for the target sensing node.

[0123] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0124] In some embodiments, the sensing node handover related information includes at least one of the following:

[0125] The first indication information is used to instruct the switching perception node;

[0126] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0127] Perception information measurement report;

[0128] Identification information of the target sensing node;

[0129] Terminal mobility analysis information;

[0130] Terminal location information;

[0131] The terminal perceives the contract information.

[0132] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0133] Receiving the sensing node handover related information sent by the source sensing RAN node or the terminal;

[0134] Receiving the sensing node switching related information sent by the second core network network element;

[0135] Receive the perception node switching related information sent by the third core network network element.

[0136] In some embodiments, the sensing node handover related information sent by the source sensing RAN node or terminal includes at least one of the following:

[0137] The first indication information is used to indicate the handover-aware RAN node;

[0138] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirements;

[0139] Perception information measurement report;

[0140] identification information of the target sensing RAN node;

[0141] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0142] The source perceives the mobility analysis information of the perceived terminal provided by the RAN node.

[0143] In some embodiments, the sensing node handover related information sent by the second core network element includes: location information of the sensing terminal and / or location information of the sensed terminal;

[0144] In some embodiments, the perception node handover 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.

[0145] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0146] 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 handover related information;

[0147] 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;

[0148] 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.

[0149] In some embodiments, when 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:

[0150] 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:

[0151] Perceived resolution;

[0152] Perceptual accuracy;

[0153] Frame rate;

[0154] Perception of time;

[0155] Target area information;

[0156] Delay;

[0157] Perceived target information.

[0158] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0159] Receiving the sensing node handover related information sent by the source sensing terminal or the RAN node;

[0160] Receive the perception node switching related information sent by the fourth core network network element.

[0161] In some embodiments, the sensing node handover related information sent by the source sensing terminal or RAN node includes at least one of the following:

[0162] The first indication information is used to instruct the handover perception terminal;

[0163] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0164] In some embodiments, the perception node handover related information sent by the fourth core network element includes terminal perception subscription information, and the terminal perception subscription information includes at least one of the following:

[0165] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0166] Perception of time;

[0167] Perceptual accuracy;

[0168] Perception area.

[0169] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0170] 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.

[0171] In some embodiments, when the target-aware node includes a target-aware terminal, the processor is configured to read the computer program in the memory and perform the following operations:

[0172] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0173] and / or,

[0174] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0175] 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.

[0176] An embodiment of the present disclosure provides a core network element, wherein the core network element is a first core network element, including:

[0177] A receiving unit, configured to receive information related to a sensing node switching;

[0178] A determination unit, configured to determine a target sensing node according to the sensing node switching related information;

[0179] The processing unit is configured to execute a sensing node switching process for the target sensing node.

[0180] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0181] In some embodiments, the sensing node handover related information includes at least one of the following:

[0182] The first indication information is used to instruct the switching perception node;

[0183] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0184] Perception information measurement report;

[0185] Identification information of the target sensing node;

[0186] Terminal mobility analysis information;

[0187] Terminal location information;

[0188] The terminal perceives the contract information.

[0189] In some embodiments, the receiving unit is further configured to:

[0190] Receiving the sensing node handover related information sent by the source sensing RAN node or the terminal;

[0191] Receiving the sensing node switching related information sent by the second core network network element;

[0192] Receive the perception node switching related information sent by the third core network network element.

[0193] In some embodiments, the sensing node handover related information sent by the source sensing RAN node or terminal includes at least one of the following:

[0194] The first indication information is used to indicate the handover-aware RAN node;

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

[0196] Perception information measurement report;

[0197] identification information of the target sensing RAN node;

[0198] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0199] The source perceives the mobility analysis information of the perceived terminal provided by the RAN node.

[0200] In some embodiments, the perception node switching related information sent by the second core network element includes: location information of the perception terminal, and / or location information of the perceived terminal.

[0201] In some embodiments, the perception node handover 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.

[0202] In some embodiments, the core network element further includes at least one of the following:

[0203] A first sending unit is 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 handover related information;

[0204] A second sending unit is 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;

[0205] The third sending unit is configured 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.

[0206] In some embodiments, when the target-aware node includes a target-aware RAN node, the processing unit is further configured to:

[0207] 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:

[0208] Perceived resolution;

[0209] Perceptual accuracy;

[0210] Frame rate;

[0211] Perception of time;

[0212] Target area information;

[0213] Delay;

[0214] Perceived target information.

[0215] In some embodiments, the receiving unit is further configured to:

[0216] Receiving the sensing node handover related information sent by the source sensing terminal or the RAN node;

[0217] Receive the perception node switching related information sent by the fourth core network network element.

[0218] In some embodiments, the sensing node handover related information sent by the source sensing terminal or RAN node includes at least one of the following:

[0219] The first indication information is used to instruct the handover perception terminal;

[0220] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0221] In some embodiments, the perception node handover related information sent by the fourth core network element includes the terminal perception subscription information, and the perception subscription information includes at least one of the following:

[0222] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0223] Perception of time;

[0224] Perceptual accuracy;

[0225] Perception area.

[0226] In some embodiments, the core network element further includes at least one of the following:

[0227] 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.

[0228] In some embodiments, when the target sensing node includes a target sensing terminal, the processing unit is further configured to:

[0229] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0230] and / or,

[0231] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0232] 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.

[0233] The embodiment of the present disclosure provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0234] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0235] 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.

[0236] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0237] In some embodiments, the sensing node handover related information includes at least one of the following:

[0238] The first indication information is used to instruct the switching perception node;

[0239] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0240] Identification information of the target sensing node;

[0241] Mobility analysis information of the terminal.

[0242] An embodiment of the present disclosure provides a wireless access network node, including:

[0243] The sending unit is configured 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.

[0244] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0245] In some embodiments, the sensing node handover related information includes at least one of the following:

[0246] The first indication information is used to instruct the switching perception node;

[0247] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0248] Identification information of the target sensing node;

[0249] Mobility analysis information of the terminal.

[0250] The embodiment of the present disclosure provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0251] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0252] 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.

[0253] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0254] In some embodiments, the sensing node handover related information includes at least one of the following:

[0255] The first indication information is used to instruct the switching perception node;

[0256] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0257] Perception information measurement report.

[0258] An embodiment of the present disclosure provides a terminal, including:

[0259] The sending unit is configured 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.

[0260] The embodiment of the present disclosure provides a sensing node switching device, including a memory, a transceiver, and a processor;

[0261] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0262] Determine the target sensing node based on the relevant information of the sensing node switching;

[0263] A sensing node switching process is performed for the target sensing node.

[0264] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0265] In some embodiments, when the target sensing node includes a target sensing RAN node, the sensing node handover related information includes at least one of the following:

[0266] Information related to sensing capabilities of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0267] Terminal mobility analysis information;

[0268] Perception information measurement report;

[0269] Fourth indication information, used to instruct the switching perception node;

[0270] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0271] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0272] receiving the perception node handover related information sent by the second RAN node; wherein the perception node handover related information includes perception capability related information of the second RAN node;

[0273] Receiving the sensing node handover related information sent by the terminal; wherein 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;

[0274] Receive the sensing node switching related information sent by a third core network element; wherein the sensing node switching related information includes mobility analysis information of the terminal.

[0275] In some embodiments, the sensory capability-related information includes at least one of the following:

[0276] Sixth indication information, used to indicate whether the second RAN node supports sensing capability;

[0277] Sensing capability information supported by the second RAN node.

[0278] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0279] 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 network element;

[0280] 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.

[0281] In some embodiments, when the target-aware node includes a target-aware RAN node, the processor is configured to read the computer program in the memory and perform the following operations:

[0282] 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 perception services, and the assistance information includes at least one of the following:

[0283] Perceived resolution;

[0284] Perceptual accuracy;

[0285] Frame rate;

[0286] Perception of time;

[0287] Target area information;

[0288] Delay;

[0289] Perceived target information.

[0290] In some embodiments, when the target-aware node includes a target-aware terminal, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0291] Determine the sensing node switching related information according to the obtained terminal sensing related information;

[0292] Receive the sensing node switching related information sent by the source sensing terminal.

[0293] In some embodiments, when the target-aware node includes a target-aware terminal, the processor is configured to read the computer program in the memory and perform the following operations:

[0294] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0295] and / or,

[0296] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0297] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0298] An embodiment of the present disclosure provides a radio access network node, where the radio access network node is a first RAN node, including:

[0299] A first determining unit is configured to determine a target sensing node based on sensing node switching related information;

[0300] The processing unit is configured to execute a sensing node switching process for the target sensing node.

[0301] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0302] In some embodiments, when the target sensing node includes a target sensing RAN node, the sensing node handover related information includes at least one of the following:

[0303] Information related to sensing capabilities of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0304] Terminal mobility analysis information;

[0305] Perception information measurement report;

[0306] Fourth indication information, used to instruct the switching perception node;

[0307] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0308] In some embodiments, the wireless access network node further includes at least one of the following:

[0309] a first receiving unit, configured to receive the sensing node handover related information sent by the second RAN node;

[0310] A second receiving unit, configured to receive the sensing node switching related information sent by the terminal;

[0311] The third receiving unit is configured to receive the sensing node switching related information sent by a third core network element.

[0312] In some embodiments, the sensing node handover related information sent by the second RAN node includes sensing capability related information of the second RAN node.

[0313] In some embodiments, 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.

[0314] In some embodiments, the sensing node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0315] In some embodiments, the sensory capability-related information includes at least one of the following:

[0316] Sixth indication information, used to indicate whether the second RAN node supports sensing capability;

[0317] Sensing capability information supported by the second RAN node.

[0318] In some embodiments, the radio access network node further includes:

[0319] 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;

[0320] The fourth receiving unit is configured 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.

[0321] In some embodiments, when the target-aware node includes a target-aware RAN node, the processing unit is further configured to:

[0322] 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 perception services, and the assistance information includes at least one of the following:

[0323] Perceived resolution;

[0324] Perceptual accuracy;

[0325] Frame rate;

[0326] Perception of time;

[0327] Target area information;

[0328] Delay;

[0329] Perceived target information.

[0330] In some embodiments, when the target sensing node includes a target sensing terminal, the wireless access network node further includes at least one of the following:

[0331] A second determining unit is configured to determine the sensing node switching related information based on the obtained terminal sensing related information;

[0332] The fifth receiving unit is configured to receive the sensing node switching related information sent by the source sensing terminal.

[0333] In some embodiments, when the target sensing node includes a target sensing terminal, the processing unit is further configured to:

[0334] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0335] and / or,

[0336] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0337] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0338] An embodiment of the present disclosure 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 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.

[0339] The beneficial effects of the above technical solution disclosed in the present invention are:

[0340] In the disclosed embodiment, a first core network element receives a first message carrying information related to a perception node handover, determines a target perception node based on the first message, and performs a perception node handover process for the target perception node. Specifically, when a perception node handover is required, the first core network element can select a suitable target perception RAN node and / or target perception terminal as the perception node. This ensures perception management within a specific area based on the mobility of the terminal, thereby ensuring continuity of communication perception services. This addresses the current issue of the network side not supporting reselection of a perception node that meets perception requirements and failing to guarantee continuity of communication perception services. BRIEF DESCRIPTION OF THE DRAWINGS

[0341] Figure 1a shows one of the schematic diagrams of the tightly coupled synaesthesia network architecture;

[0342] Figure 1b shows the second schematic diagram of the tightly coupled synaesthesia network architecture;

[0343] Figure 2 shows the loosely coupled synaesthesia network architecture;

[0344] Figure 3a shows one of the schematic diagrams of the sensing method;

[0345] Figure 3b shows the second schematic diagram of the sensing method;

[0346] Figure 3c shows the third schematic diagram of the sensing method;

[0347] Figure 3d shows the fourth schematic diagram of the sensing method;

[0348] Figure 3e shows the fifth schematic diagram of the sensing method;

[0349] Figure 3f shows the sixth schematic diagram of the sensing method;

[0350] Figure 4a shows one of the schematic diagrams of sensing node switching;

[0351] FIG4 b shows a second schematic diagram of sensing node switching;

[0352] Figure 4c shows the third schematic diagram of the sensing node switching;

[0353] Figure 5 shows a flowchart of the perception service continuity;

[0354] FIG6 shows a flow chart of a method for switching a sensing node according to an embodiment of the present disclosure;

[0355] FIG7 shows a second flowchart of the sensing node switching method according to an embodiment of the present disclosure;

[0356] FIG8 shows a third flowchart of the sensing node switching method according to an embodiment of the present disclosure;

[0357] FIG9 shows one of the interactive schematic diagrams of the sensing node switching according to an embodiment of the present disclosure;

[0358] FIG10 shows a second interactive diagram of sensing node switching according to an embodiment of the present disclosure;

[0359] FIG11 shows a fourth flowchart of the sensing node switching method according to an embodiment of the present disclosure;

[0360] FIG12 shows a fifth flowchart of the sensing node switching method according to an embodiment of the present disclosure;

[0361] FIG13 shows a sixth flowchart of the sensing node switching method according to an embodiment of the present disclosure;

[0362] FIG14 shows a third interactive diagram of sensing node switching according to an embodiment of the present disclosure;

[0363] FIG15 shows a fourth interactive diagram of sensing node switching according to an embodiment of the present disclosure;

[0364] FIG16 shows a block diagram of a sensing node switching device according to an embodiment of the present disclosure;

[0365] FIG17 shows a second block diagram of the sensing node switching device according to an embodiment of the present disclosure;

[0366] FIG18 shows a third block diagram of the sensing node switching device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0367] To make the technical problems, technical solutions, and advantages to be solved by the present disclosure more clear, a detailed description will be given below 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 present disclosure. 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 present disclosure. In addition, for the sake of clarity and brevity, descriptions of known functions and configurations have been omitted.

[0368] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present disclosure. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0369] In the various embodiments of the present disclosure, 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 disclosure.

[0370] Additionally, the terms "system" and "network" are often used interchangeably herein.

[0371] The technical solution provided by the embodiment of the present disclosure can be applied to various systems, especially the fifth generation (5 th Generation, 5G) system, 6th generation (6 thThe present invention relates to a 5G network comprising a plurality of 5G LTE networks, a 6G network, a 10G network, and a 20G network. The 5G network comprises a plurality of 5G LTE networks, a 10G network, and a 20G network. The 5G network comprises a plurality of 5G LTE networks, a 10G network, and a 20G network. The 5G network comprises a plurality of 5G LTE networks, a 10G network, and a 20G network. The 5G network comprises a plurality of 5G LTE networks, a 10G network, and a 20G network. The 5G network comprises a plurality of 5G LTE networks, a 10G network, and a 20G network.

[0372] 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 configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, full-dimensional MIMO (FD-MIMO), or massive MIMO. It can also use diversity transmission, precoding, or beamforming.

[0373] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0374] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0375] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0376] The following is an introduction to the relevant technologies involved in this disclosure:

[0377] 1. 5G synaesthesia fusion

[0378] Communication-perception fusion achieves unified design of communication and perception functions through joint signal design and / or hardware sharing. The perception in communication-perception fusion can be understood as a wireless perception technology based on communication systems. This technology transmits wireless signals to target areas or objects and analyzes the received wireless signals to obtain corresponding perception measurement information. Therefore, wireless communication networks naturally possess wireless perception capabilities. Base stations and terminals will have both communication and perception capabilities, providing perception services for perception applications, including intelligent transportation, drone monitoring, national railway perimeter security inspections, smart homes, public safety, health monitoring, and environmental monitoring.

[0379] 2. Network Architecture

[0380] Considering the degree of coupling between perception functions and functional modules in the 5G Core Network (5GC), the synaesthesia network architecture can be roughly divided into two types: tight coupling and loose coupling. New functional network elements for perception can be added to the 5GC, such as the sensing function (SF) network element, which is primarily responsible for perception control and perception measurement data calculation. The SF network element can include two logical perception functions: the sensing function-control plane function (SF-C) and the sensing function-user plane function (SF-U). Control signaling between the SF-C and the user equipment (UE) and RAN can be transmitted through the 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 integrated with the location management function (LMF) network element, or the LMF network element can be directly enhanced to implement this function, etc., but the embodiments of the present disclosure are not limited to this.

[0381] As shown in Figure 1a, a tightly coupled synaesthesia network architecture is given, in which SF-C and SF-U are logically not separated. As shown in Figure 1b, another tightly coupled synaesthesia network architecture is given, in which SF-C and SF-U are logically separated. As shown in Figure 2, a loosely coupled synaesthesia network architecture is given. In which:

[0382] AMF network element, used for registration and connection management.

[0383] User Plan Function (UPF) network element: used for external protocol data unit (PDU) session node interconnected with the data network, message routing and forwarding.

[0384] Session Management Function (SMF) network element: used for session establishment and deletion, user plane selection and control, UE IP allocation, etc.

[0385] Application Function (AF) network elements: These elements interact with the 3GPP core network to provide services. Based on operator deployment, trusted AF network elements can interact directly with related Network Function (NF) network elements. However, untrusted AF network elements cannot interact directly with NF network elements and must instead use a public framework through the Network Exposure Function (NEF).

[0386] 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.

[0387] Network Repository Function (NRF) network element: used to support service discovery function.

[0388] Unified Data Management (UDM) network element: used to store terminal information, such as contract information, information about established PDU sessions, etc.

[0389] NEF network element: used to provide functions related to securely exposing the services and capabilities provided by the 3GPP network to external networks.

[0390] 3. Perception

[0391] As shown in Figures 3a to 3f, six basic sensing methods are provided, including: base station self-transmission and self-reception (as shown in Figure 3a), base station A transmits and base station B receives (as shown in Figure 3b), UE transmits and base station receives (as shown in Figure 3c), UE self-transmission and self-reception (as shown in Figure 3d), UE-A transmits and UE-B receives (as shown in Figure 3e), and base station transmits and UE receives (as shown in Figure 3f). In addition, in the actual sensing process, a combination of the above six sensing methods can be used for sensing according to different sensing scenarios, sensing environments, sensing service requirements, etc., but the embodiments of the present disclosure are not limited to this.

[0392] 4. Perceive scenarios and needs

[0393] Perception needs are ubiquitous across all industries and can be broadly categorized into per-area and per-object sensing. Per-area sensing primarily targets objects within a specific geographic area. For example, unmanned aerial vehicle (UAV) regulation at civil aviation airports requires sensing and detecting a specific, large airspace to identify unauthorized UAV intrusions. Another example is vehicle-to-everything (V2X) dynamic mapping applications, which require real-time sensing and detection of entire road sections to update dynamic maps for assisted driving. Per-object sensing, on the other hand, primarily targets individual objects and may even require continuous tracking of these objects. Target objects can lack a UE identity (such as animals or buildings); they can also possess a UE identity, including both the object itself and the UE identity (such as a car with a UE module); or they can be coupled to the UE identity (such as a person carrying a mobile phone). Examples include regulatory agencies continuously tracking suspicious vehicles or UAVs; and the collaborative detection of human breathing and heartbeats through base stations and UE terminals.

[0394] To ensure service continuity and quality of service (QoS) for integrated communication and perception, the network may need to switch perception nodes. Furthermore, given the varying perception capabilities of different perception nodes and their uneven distribution, the switching of perception nodes may also involve switching between different perception methods.

[0395] Taking the example of a base station transmitting downlink sensing signals and a UE receiving them, and measuring the distance and speed of moving vehicles in the sensing area (the same applies to uplink sensing), Figure 4a illustrates a scenario where a sensing node UE undergoes handover. When a target vehicle moves from near UE1 to near UE2, the quality of the sensing signal reflected by the target vehicle may significantly decrease due to the increased distance between UE1 and the target vehicle or a change in the target vehicle's radar cross section (RCS), leading to a degradation in the performance of the sensing or interawareness service, or even service interruption. Based on the UE information it possesses in the area, the base station or sensing function network element can schedule UE2 as the sensing node after the handover. Figure 4b illustrates a scenario where a sensing node base station undergoes handover. Similarly, base station 1 (the source sensing node) or the sensing function network element can schedule base station 2 (the target sensing node) as the sensing node after the handover, continuing to perform sensing or interawareness services with the UE. Figure 4c illustrates a scenario where both the base station and the UE undergo handover. Before the handover, base station 1 and UE1 perceive the target vehicle, while after the handover, base station 2 and UE2 perceive the target vehicle.

[0396] 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 the AF network element or the application server (AS)) 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.

[0397] 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; alternatively, it can also be sent to the AF network element or AS through the control plane. For example, the UE sends the data to the SF network element through the RAN node and the AMF network element, or directly to the SF network element through the RAN node, and then to the AF network element or AS through the NEF network element.

[0398] As shown in Figure 5, a flowchart of business continuity awareness is given. Specifically, the following steps are included:

[0399] Step 1: The UE starts measurement, collects information about surrounding base stations, generates a measurement report, and sends it to the source base station.

[0400] Step 2: The source base station selects a suitable base station as the target base station based on the received UE measurement report, and sends the sensing detection related parameters to the target base station.

[0401] There are three ways to ensure business continuity:

[0402] Step 3a: If the UE uses traditional user plane transmission of perception measurement data, the user plane path is switched to the target base station using the current Xn- or N2-based handover process. The UE can send the perception data to the AF network element or AS via the target base station. If the UE or base station uses user plane transmission of perception measurement data to the SF network element, the user plane path is switched to the target base station using the current Xn- or N2-based handover process. The UE can first send the perception measurement data to the SF network element via the target base station or the target base station, and the SF network element then opens it to the perception server (such as the AF network element or AS) via the NEF network element.

[0403] 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.

[0404] If the UE is not participating in the sensing operation or the target being sensed is not a UE, the base station is performing sensing detection. The sensing data obtained by the base station can be sent to the SF network element through the user plane and then made available to the sensing server (such as the AF network element or AS) through the NEF network element. Alternatively, it can be sent to the AF network element or AS through the control plane. For example, the RAN node sends the data to the SF network element through the AMF network element, or the RAN node directly to the SF network element and then to the AF network element or AS through the NEF network element. If the sensing target moves from RAN1 to RAN2, no UE handover is involved. The SF network element can obtain continuous sensing measurement data of the sensing target based on the sensing measurement data of RAN1 and RAN2.

[0405] Currently, because the source RAN node does not have information about the perception capabilities of other RAN nodes, it is unable to select a target RAN node that meets the perception requirements and ensure the continuity of perception services. In addition, current communication technologies cannot ensure perception management within a specific area based on the mobility of UEs (such as perception node UEs, target UEs, or perceived UEs), and do not consider how to ensure the continuity of perception services when the UE, acting as a perception node, needs to switch.

[0406] The embodiments of the present disclosure provide a perception node switching method, device, core network element, access network node, and terminal, which solve the problem that the current network side does not support reselection of a perception node that meets the perception requirements and cannot ensure the continuity of interawareness services. Among them, the method and device (or core network element or access network node or terminal) are based on the same application concept. Since the principles of solving the problem are similar, the implementation of the method and device (or core network element or access network node or terminal) can refer to each other, and the repeated parts will not be repeated.

[0407] As shown in FIG6 , an embodiment of the present disclosure provides a sensing node switching method, which specifically includes the following steps:

[0408] Step 61: The first core network element receives information related to the switching of the sensing node.

[0409] In some embodiments, a first core network element receives a first message; wherein the first message carries information related to sensor node switching.

[0410] In some embodiments, the sensing node includes: a sensing RAN node and / or a sensing terminal. That is, the sensing node switching in the embodiments of the present disclosure includes: a sensing RAN node and / or a sensing terminal switching.

[0411] In some embodiments, 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 the perception node needs to be switched, relevant information used to determine the target perception node to be switched to, etc. The embodiments of the present disclosure are not limited to this.

[0412] In some embodiments, the first core network element may be an AS or an 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.

[0413] Step 62: The first core network element determines a target sensing node according to the sensing node switching related information.

[0414] In some embodiments, the target-aware node includes: a target-aware RAN node, and / or a target-aware terminal.

[0415] In some embodiments, when a RAN node as a sensing node needs to be switched, for example, due to terminal mobility, the sensing RAN node cannot meet the sensing service requirements. The terminal can be a sensing terminal or a sensed terminal participating in the sensing operation. In this scenario, the sensing terminal does not need to be switched and needs to reselect the sensing RAN node to ensure the continuity of the sensing service. Specifically, the solution where the RAN node (taking a base station as an example) needs to be switched as a sensing node covers the following scenarios:

[0416] 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 perception target is a terminal with communication capabilities (such as per-object perception), due to the mobility of the target terminal (or perceived terminal) or because the base station sensing node cannot meet the perception service requirements, it is necessary to switch the base station.

[0417] Scenario 2: When the terminal is in the mode of sending and the base station is receiving, or the base station is sending and the terminal is receiving, and the sensing target is a specific area (such as per-area sensing), the base station needs to be switched because the base station sensing node cannot meet the sensing service requirements.

[0418] 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.

[0419] Scenario 4: When the terminal is sending and the base station is receiving, or the base station is sending and the terminal is receiving, and the 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 sensing node terminal and the target terminal.

[0420] In some embodiments, when a 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 the 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 scenario where the terminal needs to be reselected as a perception node covers the following scenarios:

[0421] 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 example, for Per-Area perception), and the sensing terminal cannot meet the sensing service requirements, it is necessary to reselect the sensing terminal (at this time, it may be necessary to switch base stations or not).

[0422] 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).

[0423] Step 63: The first core network element performs a sensing node switching process for the target sensing node.

[0424] In some embodiments, when a RAN node serving as a perception node requires handover, the first core network element provides the source RAN node with relevant information about the selected target RAN node (in some embodiments, the first core network element may also send a perception termination indication to the source RAN node). The source RAN node determines the target RAN node to which it needs to handover based on the received relevant information about the target RAN node. The source RAN node establishes an association with the target RAN node and performs the handover process. Furthermore, the first core 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 (e.g., configuring the perception distance, speed, angular resolution and accuracy, frame rate, perception time, and perception measurement data reporting period required for measurement).

[0425] In some embodiments, when a terminal needs to be reselected as a perception node, the first core network element determines a target perception terminal and sends relevant information of the target perception terminal to the serving RAN node of the target perception terminal (in some embodiments, the first core network element may send a perception end indication to the source perception terminal). The first core 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.

[0426] In the above solution, the first core network element receives a first message carrying information related to perception node handover, determines a target perception node based on the first message, and executes a perception node handover process for the target perception node. Specifically, when a perception node handover is required, the first core network element can select an appropriate target perception RAN node and / or target perception terminal as the perception node. This ensures perception management within a specific area based on the mobility of the terminal, thereby ensuring continuity of communication perception services. This addresses the current issue of the network side not supporting reselection of a perception node that meets perception requirements and failing to guarantee communication service continuity.

[0427] In some embodiments, the sensing node handover related information includes at least one of the following:

[0428] The first indication information is used to indicate a switch to a perception node. For example, a perception node includes, but is not limited to, a perception RAN node and / or a perception terminal. The first indication information is used to indicate a switch to the perception RAN node, and / or the first indication information is used to indicate a switch to the perception terminal. In this way, the first core network element can learn that a switch to the perception node is required based on the first indication information.

[0429] 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. 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, when the first core network element learns, based on the second indication information, that the current perception node (i.e., the source perception node) does not meet the perception requirement, it can perform perception node switching.

[0430] Perception information measurement reports; for example, perception information measurement reports may include, but are not limited to, at least one of the following: signal measurement reports (e.g., communication signal measurement reports between a terminal and a RAN node), perception accuracy, latency, etc., although the present disclosure is not limited thereto. Thus, the first core network element can decide whether to switch perception nodes based on the perception information measurement reports.

[0431] Identification information of the target perception node. For example, when a source perception RAN node or terminal requests a first core network element to switch perception nodes, 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 based on the identification information of the target perception node and can perform the perception node switching process based on the identification information of the target perception node.

[0432] Terminal mobility analysis information; for example, the terminal mobility analysis information may be provided by a Network Data Analytics Function (NWDAF) network element or a source RAN node, but the present disclosure is not limited thereto. Thus, the first core network element may decide whether to switch the sensing node based on the terminal mobility analysis information.

[0433] The location information of the terminal; for example, the location information of the terminal can be provided by the AMF network element. 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 disclosure are not limited to this.

[0434] Terminal perception subscription information; for example, the terminal perception subscription information may be provided by a UDM network element, etc., but the embodiments of the present disclosure 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 subscription information obtained from the UDM network element when determining that a perception terminal needs to be switched.

[0435] In some embodiments, when the sensing node includes a sensing RAN node, the first core network element receives the sensing node handover related information, including at least one of the following:

[0436] The first core network element receives the perception node handover related information sent by the source perception RAN node or the terminal;

[0437] The first core network element receives the sensing node switching related information sent by the second core network element;

[0438] The first core network element receives the perception node switching related information sent by the third core network element.

[0439] That is, the first core network element receives a first message including at least one of the following:

[0440] The first core network element receives the first message sent by the source perception RAN node or terminal; wherein the first message carries perception node handover related information;

[0441] 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 sensing node;

[0442] 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.

[0443] 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 by the source-aware RAN node, the terminal, the second core network element, and the third core network element.

[0444] In some embodiments, the first message sent by the source sensing RAN node or terminal may be a handover request message. For example, when the terminal moves or the RAN node cannot meet the sensing service requirements (e.g., QoS requirements such as latency cannot be met), the source sensing 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 sensing node. The sensing node handover related information sent by the source sensing RAN node or terminal, that is, the first message sent by the source sensing RAN node or terminal, may carry at least one of the following:

[0445] The first indication information is used to indicate the handover-aware RAN node;

[0446] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirements;

[0447] Perception information measurement report;

[0448] identification information of the target sensing RAN node;

[0449] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0450] Mobility analysis information of the sensed terminal provided by the source sensing RAN node;

[0451] In some embodiments, the sensing node handover-related information sent by the second core network element includes: location information of the sensing terminal and / or location information of the sensed terminal. That is, the first message sent by the second core network element carries: location information of the sensing terminal and / or location information of the sensed terminal. In some embodiments, the second core network element may be an AMF element, etc., but the embodiments of the present disclosure are not limited thereto.

[0452] In some embodiments, the sensing node handover-related information sent by the third core network element includes: mobility analysis information of the sensing terminal and / or mobility analysis information of the sensed terminal. That is, the first message sent by the third core network element carries: mobility analysis information of the sensing terminal and / or mobility analysis information of the sensed terminal. In some embodiments, the third core network element may be an NWDAF element, etc., but the embodiments of the present disclosure are not limited thereto.

[0453] In this embodiment, the first core network network element can determine the target perception RAN node based on a handover request message received from the 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 called the perceived target), the perception capability of the RAN node, the location of the perception node, the load, authentication or authorization information, etc.

[0454] In some embodiments, before the first core network element receives the information related to the sensor node handover, that is, before the first core network element receives the first message, at least one of the following is further included:

[0455] 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 handover related information, that is, the first message is sent by the source perception RAN node or terminal according to the first subscription message;

[0456] 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;

[0457] 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.

[0458] In some embodiments, the first core 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 information related to perception node handover. Specifically, the source perception RAN node or terminal may report information related to perception node handover in an event-triggered manner. 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. The source perception RAN node or terminal may report information related to perception node handover in a periodic manner, for example, in the form of a periodic reporting of perception information measurement reports. The first core network element may send the first subscription message to the AMF element, which then sends the message to the terminal via the N1 interface, or the first core network element may send the first subscription message to the RAN node, which then sends the message to the terminal via the Uu interface. In some embodiments, the first subscription message may be a Radio Resource Control (RRC) message.

[0459] In some embodiments, the first core network element sends a second subscription message to the second core network element, specifically subscribing 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 radio 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.

[0460] In some embodiments, 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 to the NWDAF element (such as subscribing to the mobility analysis information of the sensing terminal or the sensed terminal, etc.).

[0461] In some embodiments, 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:

[0462] The first core network element 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 perception assistance information includes at least one of the following:

[0463] Perceived resolution;

[0464] Perceptual accuracy;

[0465] Frame rate; for example, Frame rate = 25fps, indicating the number of frames per second;

[0466] Perception time; for example, perception time includes but is not limited to at least one of the following: perception duration (i.e., the duration of perception), perception start time, perception cycle (i.e., the interval between perceptions), feedback cycle (i.e., the interval between perception data feedback), and feedback duration (i.e., the time required to feedback perception data);

[0467] 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 (TAIs), and one or more cell identifiers;

[0468] Delay; for example: the delay includes but is not limited to at least one of the following: perception delay (i.e., the delay generated by the perception node performing the perception operation), the delay generated by the perception node from performing the perception operation to the SF network element receiving the perception data, etc.

[0469] 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 disclosure are not limited thereto.

[0470] In some embodiments, 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.

[0471] In some embodiments, when the sensing node includes a sensing terminal, the first core network element receives the sensing node handover related information, including at least one of the following:

[0472] The first core network element receives the perception node handover related information sent by the source perception terminal or the RAN node;

[0473] The first core network element receives the perception node switching related information sent by the fourth core network element.

[0474] That is, the first core network element receives the first message, including at least one of the following:

[0475] 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 perception node handover;

[0476] 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 sensor node switching.

[0477] In some embodiments, the sensing node handover related information sent by the source sensing terminal or RAN node, that is, the first message sent by the source sensing terminal or RAN node, carries at least one of the following:

[0478] The first indication information is used to instruct the handover perception terminal;

[0479] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0480] 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.

[0481] In some embodiments, 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:

[0482] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0483] Perception time; for example, perception time includes but is not limited to at least one of the following: perception duration (i.e., the duration of perception), perception start time, perception cycle (i.e., the interval between perceptions), feedback cycle (i.e., the interval between perception data feedback), and feedback duration (i.e., the time required to feedback perception data);

[0484] 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.

[0485] 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.

[0486] For example, the first core network element receives the first message, or update message, sent by the source perception terminal or RAN node. 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 perception requirements such as perception accuracy and latency, the terminal will be offline or overloaded). This update message is used to indicate that the source perception terminal cannot meet the perception requirements or needs to reselect a perception terminal.

[0487] For example, the first core network element receives the first message sent by the fourth core network element, which may be a first message sent by the UDM network element to the first core network element, carrying the terminal perception subscription information. The UDM network element stores sensing service data, which includes: whether the terminal is allowed to be perceived, the perception time, the perception accuracy, the perception area, etc. The sensing service data may be included in the access and mobility subscription data.

[0488] In this embodiment, when the first core 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.

[0489] In some embodiments, before the first core network element receives the information related to the sensor node handover, that is, before the first core network element receives the first message, at least one of the following is further included:

[0490] The first core network 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.

[0491] 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 event-triggered reporting, for example, where the event triggering condition may be that the source perception terminal cannot meet perception service requirements, or the target terminal (or perceived terminal) moves out of a specific area. The update information may also be periodically reported, for example, reporting the perception status and / or communication status of the source perception terminal.

[0492] In some embodiments, the first core network element may send a fourth subscription message to the AMF element, which then sends the message to the terminal via the N1 interface. Alternatively, the first core network element may send a fourth subscription message to the RAN node, which then sends the message to the terminal via the Uu interface (for example, the fourth subscription message may be an RRC message). In addition, the update information may further include the information in the handover request message of the above-mentioned embodiment for use in handover of the RAN node, etc., but the embodiments of the present disclosure are not limited thereto.

[0493] In some embodiments, when the target sensing node includes a target sensing terminal, the first core network element performs a sensing node switching process for the target sensing node, including:

[0494] The first core network element determines a target RAN node when determining that a handover is required to the RAN node serving the target perception terminal, and sends relevant information of the target perception terminal to the target RAN node;

[0495] and / or,

[0496] 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 the switching of the perception terminal;

[0497] 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.

[0498] In this embodiment, when the first core network network element determines that the perception terminal needs to be switched, it may 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 serve the target perception terminal), the first core network network element may 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 may reselect the target RAN node based on one or more of the target area information, target object location information, RAN node perception capability, perception node location, load, 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.

[0499] The wireless access network node involved in the embodiments of the present disclosure may also be referred to as a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, it may be a device in the access network that communicates with a wireless terminal device via one or more sectors on the air interface, or may be named by another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management of the air interface. For example, the wireless access network node involved in the embodiments of the present disclosure may be a wireless access network node (Base Transceiver Station, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a wireless access network node (NodeB) in Wide-band Code Division Multiple Access (WCDMA), an evolved wireless access network node (eNB or e-NodeB) in the Long Term Evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. 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 geographically separated.

[0500] As shown in FIG7 , an embodiment of the present disclosure provides a sensing node switching method, including the following steps:

[0501] Step 71: The radio access network RAN ​​node sends the perception node handover related information to the first core network element; wherein the perception node handover related information is used by the first core network element to perform perception node handover.

[0502] In some embodiments, the RAN node sends a first message to the first core network element; wherein the first message carries information related to the sensor node switching.

[0503] In some embodiments, the sensing node includes: a sensing radio access network RAN ​​node, and / or a sensing terminal.

[0504] In some embodiments, the sensing node handover related information includes at least one of the following:

[0505] The first indication information is used to instruct the switching perception node;

[0506] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0507] Identification information of the target sensing node;

[0508] Mobility analysis information of the terminal.

[0509] It should be noted that the perception node switching method on the RAN node side in the embodiment of the present disclosure 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.

[0510] As shown in FIG8 , an embodiment of the present disclosure provides a sensing node switching method, including the following steps:

[0511] Step 81: 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.

[0512] In some embodiments, 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.

[0513] In some embodiments, the sensing node includes: a sensing radio access network RAN ​​node, and / or a sensing terminal.

[0514] In some embodiments, the sensing node handover related information includes at least one of the following:

[0515] The first indication information is used to instruct the switching perception node;

[0516] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0517] Perception information measurement report.

[0518] It should be noted that the perception node switching method on the terminal side in the embodiment of the present disclosure 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.

[0519] The terminal involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with 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 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 "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 voice and / or data with a radio 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, or a user device, but is not limited in the embodiments of the present disclosure.

[0520] The following describes the sensing node switching method according to the embodiment of the present disclosure in conjunction with specific embodiments:

[0521] Example 1:

[0522] As shown in Figure 9, a RAN node as a sensing node requires handover, for example, if the sensing node cannot meet the sensing service requirements due to UE mobility. The UE can be a sensing node UE participating in the sensing operation or a target UE being sensed. In this scenario, the sensing node UE does not need to be handed over, but needs to reselect a RAN node to ensure the continuity of the sensing service. Specifically, taking the RAN node as a base station as an example, the implementation plan covers the following scenarios:

[0523] 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 perception target is a UE with communication capabilities (for Per-Object perception), it is necessary to switch base stations due to the mobility of the target UE or because the base station sensing node cannot meet the perception service requirements.

[0524] Scenario 2: When in the UE-transmitting and base station-receiving mode or the base station-transmitting and UE-receiving mode, the perception target is a specific area (for Per-Area perception). Since the base station perception node cannot meet the perception service requirements, it is necessary to switch the base station.

[0525] Scenario 3: When in the UE-transmitting and base station-receiving mode or the base station-transmitting and UE-receiving mode, 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.

[0526] Scenario 4: When in the UE-transmitting and base station-receiving mode or the base station-transmitting and UE-receiving mode, 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.

[0527] In this embodiment, the SF network element selects a target perception RAN node based on the acquired information as an example.

[0528] Step 0a: The SF network element obtains sensing capabilities from the RAN node and / or UE (perceiving UE), including supported sensing modes (base station self-transmitting and self-receiving mode, and the "receiving" capability in the UE transmitting and base station receiving mode), sensing accuracy in each supported sensing mode, and sensing latency. For example, sensing accuracy includes but is not limited to at least one of the following: sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, and angle resolution.

[0529] 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 via a control plane or user plane path.

[0530] Step 1a: In some embodiments, the SF network element requests a subscription to handover information from the source RAN node or UE (perceiving UE). The handover information may be reported based on an event trigger, for example, the event trigger condition may be that the source perceiving RAN node cannot meet the perceiving service requirement, or that the UE measurement signal falls below a certain threshold. The handover information may also be reported periodically, for example, by periodically reporting a perceiving information measurement report.

[0531] Specifically, the SF network element can send a subscription request message to the AMF network element, and the AMF network element then sends it to the UE through N1, or the SF network element sends a subscription request message to the RAN, and the RAN node then sends it to the UE through the Uu port (for example, the subscription request message can be an RRC message).

[0532] Step 1b: In some embodiments, the SF network element subscribes to the UE location (e.g., including the sensing UE or 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.

[0533] Step 1c: In some embodiments, the SF network element subscribes to the NWDAF network element for the mobility analysis information of the UE (sensing UE or target UE).

[0534] 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 (e.g., 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 can be one or more of the following:

[0535] The first indication information is used to indicate the handover-aware RAN node;

[0536] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirements;

[0537] Perception information measurement report;

[0538] identification information of the target sensing RAN node;

[0539] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0540] The source perceives the mobility analysis information of the perceived terminal provided by the RAN node.

[0541] 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, target object location information, RAN node perception capability, perception node location, load, authentication or authorization information, etc. The SF network element provides the source RAN node with information related to the selected target perception RAN node (e.g., the target perception RAN node identifier).

[0542] Step 4: The source-aware RAN node determines the target-aware RAN node to be handed over to based on the received target-aware RAN node identifier, and then establishes an association with the target-aware RAN node. In some embodiments, the source-aware RAN node can perform the RAN node handover process based on existing technologies.

[0543] 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, and perceived target information. This perception assistance information can be used in per-object perception scenarios.

[0544] 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.

[0545] For Xn-based handover, the source sensing RAN node can send a HANDOVER REQUEST message via XnAP to send the sensing assistance information to the target sensing RAN node.

[0546] In some embodiments, 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.

[0547] 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).

[0548] In some embodiments, the SF network element sends a sensing end indication to the source sensing RAN node.

[0549] Example 2:

[0550] As shown in Figure 10, if the UE is used as the sensing node and needs to be reselected (for example, if the sensing UE cannot meet the sensing service requirements), and the RAN node is used as the sensing node, it can be switched or not. In this scenario, how to reselect the UE (and RAN node) to ensure the continuity of communication sensing services? Specifically, the implementation plan covers the following scenarios:

[0551] 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 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 be necessary to switch the base station or it may not be necessary to switch the base station).

[0552] 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 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 be necessary to switch the base station or it may not be necessary to switch the base station).

[0553] In this embodiment, the SF network element selects a target perception terminal based on the acquired information as an example.

[0554] In step 0a, the SF network element obtains sensing capabilities from the RAN node and / or UE, including supported sensing modes (such as UE self-transmitting and self-receiving mode, and the "receiving" capability in the UE transmitting and receiving mode), sensing accuracy in each supported sensing mode, sensing latency, etc. For example, sensing accuracy includes but is not limited to at least one of the following: sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, and angle resolution.

[0555] Step 0b: The RAN node and / or UE performs perception measurement and transmits the measurement data to the SF network element and / or AF network element via a control plane or user plane path.

[0556] Step 1. In some embodiments, the SF network element requests subscription update information from the sensing UE or RAN node. The update information can be reported via an event trigger, for example, when the sensing UE cannot meet the sensing service requirements or when the target UE moves out of a specific area. The update information can also be reported periodically, for example, to report the current sensing status and / or communication status of the sensing UE.

[0557] Specifically, the SF network element may send a subscription request message to the AMF network element, which then sends it to the UE via N1, or the SF network element may send a subscription request message to the RAN node, which then sends it to the UE via the Uu interface (for example, the subscription request message may be an RRC message). In addition, the update information may also include the handover information in step 1a of embodiment 1 for handover of the RAN node.

[0558] 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.

[0559] 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.

[0560] The SF network element can request the UE's sensing subscription information from the UDM network element. For example, the UDM network element stores Sensing Service Data, which includes information such as whether the UE is allowed to be sensed, the sensing time, the sensing accuracy, and the sensing area. Sensing Service Data can also be included in Access and Mobility Subscription data.

[0561] Step 4: In some embodiments, the SF network element or the source RAN node (eg, the serving RAN node of the source-aware UE) determines whether a RAN node needs to be switched.

[0562] 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.

[0563] Step 4b: If the RAN node needs to be switched (for example, the RAN node serving the source-aware UE cannot serve the target-aware 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-aware UE to the target RAN node for the target RAN node to establish a communication connection with the target-aware UE.

[0564] Step 5: The SF network element sends a sensing control request to the target sensing UE (and RAN node) to control it to initiate detection and acquisition of sensing measurement data. In some embodiments, the SF network element may send a sensing end indication to the source sensing UE (and source RAN node).

[0565] 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.

[0566] As shown in FIG11 , an embodiment of the present disclosure provides a sensing node switching method, which specifically includes the following steps:

[0567] Step 111: The first RAN node determines a target sensing node according to the sensing node handover related information;

[0568] In some embodiments, the sensing node includes: a sensing RAN node and / or a sensing terminal. That is, the sensing node switching in the embodiments of the present disclosure includes: a sensing RAN node and / or a sensing terminal switching.

[0569] In some embodiments, 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 the perception node needs to be switched, relevant information used to determine the target perception node to be switched to, etc. The embodiments of the present disclosure are not limited to this.

[0570] In some embodiments, the target-aware node includes: a target-aware RAN node, and / or a target-aware terminal.

[0571] In some embodiments, when a RAN node as a sensing node needs to be switched, for example, due to terminal mobility, the sensing RAN node cannot meet the sensing service requirements. The terminal can be a sensing terminal or a sensed terminal participating in the sensing operation. In this scenario, the sensing terminal does not need to be switched, but needs to reselect the sensing RAN node to ensure the continuity of the sensing service. Specifically, the solution where the RAN node as a sensing node needs to be switched covers the following scenarios:

[0572] 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 perception target is a terminal with communication capabilities (for Per-Object perception), it is necessary to switch base stations due to the mobility of the target terminal (or the perceived terminal) or because the base station sensing node cannot meet the perception service requirements.

[0573] Scenario 2: When the terminal is in the mode of sending and the base station is receiving, or the base station is sending and the terminal is receiving, and the target of perception is a specific area (for Per-Area perception), since the base station perception node cannot meet the perception service requirements, it is necessary to switch the base station.

[0574] 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, the perceived target is a terminal with communication capabilities (for per-object perception). Due to the mobility of the target terminal, the base station needs to be switched.

[0575] Scenario 4: When the terminal is transmitting and the base station is receiving, or the base station is transmitting and the terminal is receiving, the target being sensed is a terminal with communication capabilities (per-object perception). Due to the mobility of the sensing node terminal and the target terminal, the base station needs to be switched.

[0576] In some embodiments, when a 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 the 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 scenario where the terminal needs to be reselected as a perception node covers the following scenarios:

[0577] 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 (which may or may not require switching base stations).

[0578] 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 be necessary to switch base stations or not).

[0579] Step 112: The first RAN node performs a sensor node handover process for the target sensor node.

[0580] In some embodiments, the first RAN node may perform a sensing node handover based on a terminal request, or may determine whether a sensing node handover is required. After performing the sensing node handover, for example, when the sensing node is a sensing RAN node, the SF network element may send a sensing control request to the target sensing RAN node to control the target sensing RAN node to initiate detection and acquisition of sensing measurement data (for example, configuring the sensing distance, sensing speed, sensing angle, distance resolution, speed resolution, angle resolution, frame rate, sensing time, and sensing measurement data reporting period required for measurement). Alternatively, when the sensing node is a sensing terminal, the SF network element may send a sensing control request to the target sensing terminal (and RAN node) to control it to initiate detection and acquisition of sensing measurement data.

[0581] In this embodiment, the first RAN node determines a target perception node based on the perception node handover-related information and executes a perception node handover process for the target perception node. Specifically, when a perception node handover is required, the RAN node can select an appropriate target perception RAN node and / or target perception terminal as the perception node. This ensures perception management within a specific area based on the mobility of the terminal, thereby ensuring continuity of communication perception services. This addresses the current issue of the network side not supporting reselection of a perception node that meets perception requirements and failing to guarantee communication perception service continuity.

[0582] In some embodiments, when the target sensing node includes a target sensing RAN node, the sensing node handover related information includes at least one of the following:

[0583] Information related to the perception capabilities 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 perception capability information of the second RAN node can be obtained from a system message of the second RAN node, or, if the terminal is capable of supporting reporting of the perception capability information of at least one second RAN node, can also be obtained through terminal reporting, etc., but the embodiments of the present disclosure are not limited thereto. In this way, when the first RAN node determines that a perception RAN node needs to be switched, the target perception RAN node can be determined based on the perception capability information of the at least one second RAN node;

[0584] Terminal mobility analysis information; for example, the terminal mobility analysis information may be provided by a Network Data Analytics Function (NWDAF) network element, etc., although the present disclosure is not limited thereto. Thus, the first RAN node may decide whether to switch to a sensing node based on the terminal mobility analysis information.

[0585] 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., but the embodiments of the present disclosure 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;

[0586] 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.

[0587] 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.

[0588] In some embodiments, before the first RAN node determines the target perception node based on the perception node handover related information, the method further includes at least one of the following:

[0589] The first RAN node receives the sensor node handover 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 handover related information;

[0590] The first RAN node receives the sensing node handover related information sent by the terminal; for example, the first RAN node receives a second message sent by the terminal; wherein the second message carries the sensing node handover related information;

[0591] The first RAN node receives the perception node handover 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 handover related information.

[0592] For example, the first RAN node receives a system message sent by the second RAN node, which may be a system broadcast message (for example, a system information block (SIB) message) carried by each RAN node.

[0593] In some embodiments, the sensing node handover related information sent by the second RAN node includes sensing capability related information of the second RAN node.

[0594] In some embodiments, 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.

[0595] In some embodiments, the sensing node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0596] In some embodiments, the sensory capability-related information includes at least one of the following:

[0597] Sixth indication information is used to indicate whether the second RAN node supports the awareness capability; for example, if the awareness capability support indication bit corresponding to the second RAN node is set to "TRUE", it indicates that the awareness capability is supported; or if the awareness capability support indication bit includes a list of RAN node identifiers or a list of cell identifiers, it indicates that the second RAN node corresponding to the list of RAN node identifiers or the list of cell identifiers supports the awareness capability.

[0598] 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.

[0599] In this embodiment, when a source sensing RAN node (i.e., a first RAN node) determines that a sensing node needs to be switched, for example, when the UE moves or the RAN node cannot meet sensing service requirements (e.g., QoS requirements such as latency cannot be met), the source sensing RAN node determines a target sensing RAN node based on received sensing information measurement reports, sensing capability information of other RAN nodes, UE mobility analysis information received from the NWDAF network element, and one or more of target area information and target object location information.

[0600] In some embodiments, before the first RAN node determines the target perception node based on the perception node handover related information, the method includes:

[0601] 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;

[0602] 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.

[0603] For example, if the sensing capability-related information received by the source sensing RAN node (i.e., the first RAN node) indicates the capability of supporting the sensing function, i.e., whether the second sensing node supports the sensing capability (e.g., indicating that RAN node_1 supports the sensing capability), the source sensing RAN node may request the SF network element to obtain the sensing capability of the RAN node (e.g., sensing mode, sensing accuracy, etc.), and the request information sent by the source sensing RAN node may include the RAN node identifier of the RAN node.

[0604] In some embodiments, when the target perception node includes a target perception RAN node, the first RAN node performs a perception node handover process for the target perception node, including:

[0605] 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:

[0606] Perceived resolution;

[0607] Perceptual accuracy;

[0608] Frame rate; for example: Frame rate = 25fps, which means the number of frames per second;

[0609] Perception time; for example, perception time includes but is not limited to at least one of the following: perception duration (i.e., the duration of perception), perception start time, perception cycle (i.e., the interval between perceptions), feedback cycle (i.e., the interval between perception data feedback), and feedback duration (i.e., the time required to feedback perception data);

[0610] 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 (TAIs), and one or more cell identifiers;

[0611] Delay; for example: the delay includes but is not limited to at least one of the following: perception delay (i.e., the delay generated by the perception node performing the perception operation), the delay generated by the perception node from performing the perception operation to the SF network element receiving the perception data, etc.

[0612] 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 disclosure are not limited thereto.

[0613] 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 scenarios oriented to Per-Object perception. For example: for NG-based handover, the AMF network element sends a HANDOVER REQUEST message via 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 REQUEST message via 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 handover process, the source AMF network element can send the perception assistance information to the target AMF network element.

[0614] In some embodiments, when the target perception node includes a target perception terminal, the first RAN node, before determining the target perception node based on the perception node handover related information, includes at least one of the following:

[0615] The first RAN node determines the perception node handover related information based on the obtained terminal perception related information;

[0616] The first RAN node receives the perception node handover related information sent by the source perception terminal; for example, the first RAN node receives a fourth message sent by the source perception terminal; wherein the fourth message carries the perception node handover related information, and the perception node handover related information includes but is not limited to at least one of the following:

[0617] Information related to sensing capabilities of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0618] Perception information measurement report;

[0619] Fourth indication information, used to instruct the switching perception node;

[0620] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0621] In some embodiments, the terminal perception related information includes but is not limited to: UE location, whether the UE can meet the perception requirements (perception accuracy, latency, etc.).

[0622] In this embodiment, the first RAN node may determine that a perception terminal needs to be reselected based on the information it has about terminal perception within the area, and may determine a target perception terminal. The first RAN node may send the target perception terminal information to the SF network element. Alternatively, the source perception terminal and / or the target terminal may proactively request the RAN node to switch perception nodes, i.e., 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 perception nodes, etc., although the embodiments of the present disclosure are not limited to this.

[0623] In some embodiments, when the target perception node includes a target perception terminal, the first RAN node performs a perception node handover process for the target perception node, including:

[0624] The first RAN node determines a target RAN node when determining that a switch is required to the RAN node serving the target perception terminal, and sends relevant information of the target perception terminal to the target RAN node;

[0625] and / or,

[0626] 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 the switching of the perception terminal;

[0627] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0628] In this embodiment, when the first RAN node determines that a perception terminal needs to be handed over, it may further determine whether a RAN node handover is required. If the RAN node does not require handover (for example, the RAN node serving the source perception node can serve the target perception terminal), the first RAN node may obtain relevant information about the target perception terminal (for example, by requesting it from an SF network element) for use in establishing a communication connection between the first RAN node and the target perception terminal. If the RAN node requires handover (for example, the RAN node serving the source perception node cannot serve the target perception terminal), the first RAN node may reselect a target RAN node based on one or more of target area information, target object location information, RAN node perception capabilities, perception node location, load, authentication or authorization information, and the like, and send relevant information about the target perception terminal to the target RAN node for use in establishing a communication connection between the target RAN node and the target perception terminal.

[0629] As shown in FIG12 , an embodiment of the present disclosure provides a sensing node switching method, which specifically includes the following steps:

[0630] Step 121: The first core network element receives a request message sent by the first RAN node;

[0631] 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 handover, and the information related to the sensor node handover is used by the first RAN node to perform the sensor node handover.

[0632] In some embodiments, the sensing node handover related information includes sensing capability information supported by at least one second RAN node, where the sensing capability information supported by the second RAN node is used by the first RAN node to perform sensing RAN node handover.

[0633] It should be noted that the perception node switching method on the first core network element side in the embodiment of the present disclosure 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.

[0634] As shown in FIG13 , an embodiment of the present disclosure provides a sensing node switching method, which specifically includes the following steps:

[0635] Step 131: The terminal sends 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 perception node handover, and the perception node handover related information includes: perception information measurement report and / or perception capability related information of at least one second RAN node.

[0636] In some embodiments, 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.

[0637] It should be noted that the perception node switching method on the terminal side in the embodiment of the present disclosure 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.

[0638] The following describes the sensing node switching method according to the embodiment of the present disclosure in conjunction with specific embodiments:

[0639] Example 3:

[0640] As shown in Figure 14, the RAN node is used as the sensing node and needs to be switched, and the scenario is the same as in 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 in the selection.

[0641] In step 0a, the SF network element obtains sensing capabilities from the RAN node and / or UE (sensing node UE), including supported sensing modes (such as base station self-transmit and self-receive mode, and the "receive" capability in the UE-transmit and base station-receive mode), sensing accuracy for each supported sensing mode, and sensing latency. For example, sensing accuracy includes but is not limited to sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, and angle resolution.

[0642] Step 0b: The source sensing RAN node and / or UE (eg, sensing UE) performs sensing measurement and transmits the measurement data to the SF network element and / or AF network element via a control plane or user plane path.

[0643] Step 1a: Each RAN node carries information related to the RAN node's sensing capability in a system broadcast message (e.g., a SIB message). For example, the information related to the sensing capability may include at least one of the following:

[0644] Sixth indication information is used to indicate whether the second RAN node supports the awareness capability; for example, if the awareness capability support indication bit corresponding to the second RAN node is set to "TRUE", it indicates that the awareness capability is supported; or if the awareness capability support indication bit includes a list of RAN node identifiers or a list of cell identifiers, it indicates that the second RAN node corresponding to the list of RAN node identifiers or the list of cell identifiers supports the awareness capability.

[0645] 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.

[0646] Step 1b: In some embodiments, the source sensing RAN node subscribes to the NWDAF network element for mobility analysis information of the UE (eg, sensing UE or target UE).

[0647] Step 2: The UE sends a perception information measurement report to the source perception RAN node, including information related to the perception capabilities of each RAN node (e.g., the perception capability information 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 (e.g., a communication signal measurement report between the terminal and the RAN node), perception accuracy, latency, etc., although the embodiments of the present disclosure are not limited thereto.

[0648] Step 3a: If the sensing capability-related information received by the source sensing RAN in step 2 is sixth indication information, indicating that it supports sensing functionality (for example, indicating that RAN node_1 supports sensing capabilities), the source sensing RAN node may request the SF network element to obtain the sensing capabilities supported by the RAN node_1 (for example, sensing mode, sensing accuracy, etc.). The request information sent by the source sensing RAN node may include the RAN node identifier of the RAN node_1.

[0649] Step 3b: The source perception RAN node determines that a 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 (e.g., QoS requirements such as latency cannot be met), the source perception RAN node determines the target perception RAN node based on received perception information measurement reports, information related to perception capabilities of other RAN nodes, UE mobility analysis information received from the NWDAF network element, and one or more of target area information and target object location information.

[0650] Step 4: The source-aware RAN node may perform a RAN node handover process based on existing technologies, establish an association with the target-aware RAN node, and so on.

[0651] 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, and perceived target information. This perception assistance information can be used in per-object perception scenarios.

[0652] 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.

[0653] For Xn-based handover, the source sensing RAN node can send a HANDOVER REQUEST message via XnAP to send the sensing assistance information to the target sensing RAN node.

[0654] 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.

[0655] In some embodiments, the AMF network element or the source sensing RAN node or the target sensing RAN node sends a RAN handover indication to the SF network element, instructing the switching of the sensing node to the target sensing RAN node. In some embodiments, the RAN handover indication may include an identifier of the target sensing RAN node.

[0656] 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., configuring the sensing distance / speed / angle resolution and accuracy, frame rate, sensing time, and sensing measurement data reporting period required for measurement). In some embodiments, the SF sends a sensing end indication to the source RAN node.

[0657] Example 4:

[0658] As shown in Figure 15, the UE needs to be reselected as the sensing node. Meanwhile, the RAN node, acting as the sensing node, can be switched or not. The scenario is the same as in Example 1. The difference is that in this embodiment, the RAN node selects the target sensing UE.

[0659] Step 0a: The SF network element obtains sensing capabilities from the RAN node and / or UE, including supported sensing modes (such as UE self-transmitting and self-receiving mode, and the "receiving" capability in the UE transmitting and receiving mode), sensing accuracy in each supported sensing mode, sensing latency, etc. For example, sensing accuracy includes but is not limited to sensing distance, distance resolution, sensing speed, speed resolution, sensing angle, angle resolution, etc.

[0660] Step 0b: The RAN node and / or UE performs perception measurement and transmits the measurement data to the SF network element and / or AF network element via a control plane or user plane path.

[0661] Step 1: If the RAN node determines that a new sensing UE needs to be selected based on the UE sensing-related information it has in the area, it determines the target sensing UE. The UE sensing-related information includes but is not limited to: UE location and whether the UE can meet sensing requirements (sensing accuracy, latency, etc.).

[0662] Step 2: The RAN node sends the information of the target sensing UE to the SF network element.

[0663] Step 3: In some embodiments, the SF network element and / or the RAN node determines whether a RAN node needs to be switched.

[0664] If the RAN node does not need to be switched (for example, the RAN node serving the source-aware UE can serve 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.

[0665] If the RAN node needs to be switched (for example, the RAN node serving the source-aware UE cannot serve the target-aware 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-aware UE to the target RAN node, so that the target RAN node can establish a communication connection with the target-aware UE.

[0666] Step 4: The RAN node sends the target sensing UE information to the AMF network element.

[0667] Step 5: The SF network element sends a sensing control request to the target sensing UE (and RAN node) to control it to initiate detection and acquisition of sensing measurement data. In some embodiments, the SF network element sends a sensing end indication to the source sensing UE (and source RAN node).

[0668] 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.

[0669] The above embodiments illustrate the perception node switching method disclosed herein. The corresponding apparatus, core network element, access network element, and terminal will be described below with reference to the accompanying drawings.

[0670] In order to better achieve the above-mentioned purpose, as shown in Figure 16, an embodiment of the present disclosure 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; for example, the transceiver 162 is used to receive and send data under the control of the processor 163.

[0671] Specifically, as an embodiment, the processor 163 is configured to read the computer program in the memory 161 and perform the following operations:

[0672] Receive information related to sensor node switching;

[0673] Determining a target sensing node based on the sensing node switching related information;

[0674] A sensing node switching process is performed for the target sensing node.

[0675] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0676] In some embodiments, the sensing node handover related information includes at least one of the following:

[0677] The first indication information is used to instruct the switching perception node;

[0678] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0679] Perception information measurement report;

[0680] Identification information of the target sensing node;

[0681] Terminal mobility analysis information;

[0682] Terminal location information;

[0683] The terminal perceives the contract information.

[0684] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0685] Receiving the sensing node handover related information sent by the source sensing RAN node or the terminal;

[0686] Receiving the sensing node switching related information sent by the second core network network element;

[0687] Receiving the sensing node switching related information sent by the third core network element;

[0688] In some embodiments, the sensing node handover related information sent by the source sensing RAN node or terminal includes at least one of the following:

[0689] The first indication information is used to indicate the handover-aware RAN node;

[0690] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirements;

[0691] Perception information measurement report;

[0692] identification information of the target sensing RAN node;

[0693] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0694] Mobility analysis information of the sensed terminal provided by the source sensing RAN node;

[0695] In some embodiments, the sensing node handover related information sent by the second core network element includes: location information of the sensing terminal and / or location information of the sensed terminal;

[0696] In some embodiments, the perception node handover 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.

[0697] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0698] 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 handover related information;

[0699] 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;

[0700] 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.

[0701] In some embodiments, when 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:

[0702] 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:

[0703] Perceived resolution;

[0704] Perceptual accuracy;

[0705] Frame rate;

[0706] Perception of time;

[0707] Target area information;

[0708] Delay;

[0709] Perceived target information.

[0710] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0711] receiving the sensing node handover related information sent by the source sensing terminal or the RAN node;

[0712] Receiving the sensing node switching related information sent by the fourth core network network element;

[0713] In some embodiments, the sensing node handover related information sent by the source sensing terminal or RAN node includes at least one of the following:

[0714] The first indication information is used to instruct the handover perception terminal;

[0715] The second indication information is used to indicate whether the source sensing terminal meets the sensing requirement;

[0716] 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:

[0717] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0718] Perception of time;

[0719] Perceptual accuracy;

[0720] Perception area.

[0721] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0722] 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.

[0723] In some embodiments, when the target-aware node includes a target-aware terminal, the processor is configured to read the computer program in the memory and perform the following operations:

[0724] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0725] and / or,

[0726] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0727] 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.

[0728] Furthermore, as yet another embodiment, the processor is configured to read the computer program in the memory and perform the following operations:

[0729] receiving a request message sent by the first RAN node;

[0730] According to the request message, a response message is sent to the first RAN node; wherein the response message carries the sensing node handover related information, and the sensing node handover related information is used by the first RAN node to perform the sensing node handover.

[0731] In some embodiments, the sensing node handover related information includes sensing capability information supported by at least one second RAN node, where the sensing capability information supported by the second RAN node is used by the first RAN node to perform sensing RAN node handover.

[0732] In FIG16 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits linking together one or more processors represented by processor 163 and memory represented by memory 161. The bus architecture may also link together various other circuits such as peripheral devices, 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, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or 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.

[0733] 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.

[0734] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in 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.

[0735] As shown in Figure 17, an embodiment of the present disclosure 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; for example, the transceiver 172 is used to receive and send data under the control of the processor 173.

[0736] Specifically, as an embodiment, the processor 173 is configured to read the computer program in the memory 171 and perform the following operations:

[0737] Determine the target sensing node based on the relevant information of the sensing node switching;

[0738] A sensing node switching process is performed for the target sensing node.

[0739] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0740] In some embodiments, when the target sensing node includes a target sensing RAN node, the sensing node handover related information includes at least one of the following:

[0741] Information related to sensing capabilities of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0742] Terminal mobility analysis information;

[0743] Perception information measurement report;

[0744] Fourth indication information, used to instruct the switching perception node;

[0745] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0746] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0747] receiving the perception node handover related information sent by the second RAN node; wherein the perception node handover related information sent by the second RAN node includes perception capability related information of the second RAN node;

[0748] Receiving the perception node handover related information sent by the terminal; wherein 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;

[0749] 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.

[0750] In some embodiments, the sensory capability-related information includes at least one of the following:

[0751] Sixth indication information, used to indicate whether the second RAN node supports sensing capability;

[0752] Sensing capability information supported by the second RAN node.

[0753] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0754] 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 network element;

[0755] 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.

[0756] In some embodiments, when the target-aware node includes a target-aware RAN node, the processor is configured to read the computer program in the memory and perform the following operations:

[0757] 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 perception services, and the assistance information includes at least one of the following:

[0758] Perceived resolution;

[0759] Perceptual accuracy;

[0760] Frame rate;

[0761] Perception of time;

[0762] Target area information;

[0763] Delay;

[0764] Perceived target information.

[0765] In some embodiments, when the target-aware node includes a target-aware terminal, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0766] Determine the sensing node switching related information according to the obtained terminal sensing related information;

[0767] Receive the sensing node switching related information sent by the source sensing terminal.

[0768] In some embodiments, when the target-aware node includes a target-aware terminal, the processor is configured to read the computer program in the memory and perform the following operations:

[0769] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0770] and / or,

[0771] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0772] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0773] Furthermore, as yet another embodiment, the processor is configured to read the computer program in the memory and perform the following operations:

[0774] 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.

[0775] In FIG17 , 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. The bus architecture may also link together various other circuits such as peripheral devices, 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, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as 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.

[0776] 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.

[0777] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure 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 of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0778] As shown in Figure 18, 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; for example, the transceiver 182 is used to receive and send data under the control of the processor 183.

[0779] Specifically, as an embodiment, the processor 183 is configured to read the computer program in the memory 181 and perform the following operations:

[0780] 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.

[0781] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0782] In some embodiments, the sensing node handover related information includes at least one of the following:

[0783] The first indication information is used to instruct the switching perception node;

[0784] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0785] Perception information measurement report.

[0786] Furthermore, as yet another embodiment, the processor is configured to read the computer program in the memory and perform the following operations:

[0787] The terminal sends 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 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.

[0788] In FIG18 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits linking together one or more processors represented by processor 183 and memory represented by memory 181. The bus architecture may also link together various other circuits such as peripheral devices, 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, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 184 may also be an interface capable of connecting external or internal devices as required, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0789] 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.

[0790] Optionally, the processor 183 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), and the processor may also adopt a multi-core architecture.

[0791] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0792] It should be noted here that the above-mentioned device provided by the embodiment of the present disclosure 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 the method embodiment will not be described in detail here.

[0793] The embodiment of the present disclosure further provides a core network element, wherein the core network element is a first core network element, including:

[0794] A receiving unit, configured to receive information related to a sensing node switching;

[0795] A determination unit, configured to determine a target sensing node according to the sensing node switching related information;

[0796] The processing unit is configured to execute a sensing node switching process for the target sensing node.

[0797] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0798] In some embodiments, the sensing node handover related information includes at least one of the following:

[0799] The first indication information is used to instruct the switching perception node;

[0800] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0801] Perception information measurement report;

[0802] Identification information of the target sensing node;

[0803] Terminal mobility analysis information;

[0804] Terminal location information;

[0805] The terminal perceives the contract information.

[0806] In some embodiments, the receiving unit is further configured to:

[0807] Receiving the sensing node handover related information sent by the source sensing RAN node or the terminal;

[0808] Receiving the sensing node switching related information sent by the second core network network element;

[0809] Receive the perception node switching related information sent by the third core network network element.

[0810] In some embodiments, the sensing node handover related information sent by the source sensing RAN node or terminal includes at least one of the following:

[0811] The first indication information is used to indicate the handover-aware RAN node;

[0812] The second indication information is used to indicate whether the source sensing RAN node meets the sensing requirements;

[0813] Perception information measurement report;

[0814] identification information of the target sensing RAN node;

[0815] Mobility analysis information of the sensing terminal provided by the source sensing RAN node;

[0816] The source perceives the mobility analysis information of the perceived terminal provided by the RAN node.

[0817] In some embodiments, the perception node switching related information sent by the second core network element includes: location information of the perception terminal, and / or location information of the perceived terminal.

[0818] In some embodiments, the perception node handover 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.

[0819] In some embodiments, the core network element further includes at least one of the following:

[0820] A first sending unit is 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 handover related information;

[0821] A second sending unit is 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;

[0822] The third sending unit is configured 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.

[0823] In some embodiments, when the target-aware node includes a target-aware RAN node, the processing unit is further configured to:

[0824] 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:

[0825] Perceived resolution;

[0826] Perceptual accuracy;

[0827] Frame rate;

[0828] Perception of time;

[0829] Target area information;

[0830] Delay;

[0831] Perceived target information.

[0832] In some embodiments, the receiving unit is further configured to:

[0833] Receiving the sensing node handover related information sent by the source sensing terminal or the RAN node;

[0834] Receive the perception node switching related information sent by the fourth core network network element.

[0835] In some embodiments, the sensing node handover related information sent by the source sensing terminal or RAN node includes at least one of the following:

[0836] The first indication information is used to instruct the handover perception terminal;

[0837] The second indication information is used to indicate whether the source perception terminal meets the perception requirements.

[0838] In some embodiments, the perception node handover related information sent by the fourth core network element includes the terminal perception subscription information, and the perception subscription information includes at least one of the following:

[0839] The third indication information is used to indicate whether the terminal is allowed to be sensed;

[0840] Perception of time;

[0841] Perceptual accuracy;

[0842] Perception area.

[0843] In some embodiments, the core network element further includes at least one of the following:

[0844] 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.

[0845] In some embodiments, when the target sensing node includes a target sensing terminal, the processing unit is further configured to:

[0846] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0847] and / or,

[0848] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0849] 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.

[0850] The present disclosure also provides a wireless access network node, including:

[0851] The sending unit is configured 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.

[0852] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0853] In some embodiments, the sensing node handover related information includes at least one of the following:

[0854] The first indication information is used to instruct the switching perception node;

[0855] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0856] Identification information of the target sensing node;

[0857] Mobility analysis information of the terminal.

[0858] The present disclosure also provides a terminal, including:

[0859] The sending unit is configured 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.

[0860] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0861] In some embodiments, the sensing node handover related information includes at least one of the following:

[0862] The first indication information is used to instruct the switching perception node;

[0863] The second indication information is used to indicate whether the source sensing node meets the sensing requirements;

[0864] Perception information measurement report.

[0865] An embodiment of the present disclosure further provides a radio access network node, where the radio access network node is a first RAN node, including:

[0866] A first determining unit is configured to determine a target sensing node based on sensing node switching related information;

[0867] The processing unit is configured to execute a sensing node switching process for the target sensing node.

[0868] In some embodiments, the sensing node includes: a sensing RAN node, and / or a sensing terminal.

[0869] In some embodiments, when the target sensing node includes a target sensing RAN node, the sensing node handover related information includes at least one of the following:

[0870] Information related to sensing capabilities of at least one second RAN node; wherein the target sensing RAN node is determined from the at least one second RAN node;

[0871] Terminal mobility analysis information;

[0872] Perception information measurement report;

[0873] Fourth indication information, used to instruct the switching perception node;

[0874] The fifth indication information is used to indicate whether the source sensing node meets the sensing requirements.

[0875] In some embodiments, the wireless access network node further includes at least one of the following:

[0876] a first receiving unit, configured to receive the sensing node handover related information sent by the second RAN node;

[0877] A second receiving unit, configured to receive the sensing node switching related information sent by the terminal;

[0878] The third receiving unit is configured to receive the sensing node switching related information sent by a third core network element.

[0879] In some embodiments, the sensing node handover related information sent by the second RAN node includes sensing capability related information of the second RAN node.

[0880] In some embodiments, 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.

[0881] In some embodiments, the sensing node switching related information sent by the third core network element includes mobility analysis information of the terminal.

[0882] In some embodiments, the sensory capability-related information includes at least one of the following:

[0883] Sixth indication information, used to indicate whether the second RAN node supports sensing capability;

[0884] Sensing capability information supported by the second RAN node.

[0885] In some embodiments, the radio access network node further includes:

[0886] 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;

[0887] The fourth receiving unit is configured 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.

[0888] In some embodiments, when the target-aware node includes a target-aware RAN node, the processing unit is further configured to:

[0889] 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 perception services, and the assistance information includes at least one of the following:

[0890] Perceived resolution;

[0891] Perceptual accuracy;

[0892] Frame rate;

[0893] Perception of time;

[0894] Target area information;

[0895] Delay;

[0896] Perceived target information.

[0897] In some embodiments, when the target sensing node includes a target sensing terminal, the wireless access network node further includes at least one of the following:

[0898] A second determining unit is configured to determine the sensing node switching related information based on the obtained terminal sensing related information;

[0899] The fifth receiving unit is configured to receive the sensing node switching related information sent by the source sensing terminal.

[0900] In some embodiments, when the target sensing node includes a target sensing terminal, the processing unit is further configured to:

[0901] In the case of determining that a handover is required to the RAN node serving the target perception terminal, determining a target RAN node and sending relevant information of the target perception terminal to the target RAN node;

[0902] and / or,

[0903] If 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 a first RAN node; wherein the first RAN node is the RAN node serving the source perception terminal before the switching of the perception terminal;

[0904] The relevant information of the target perception terminal is used to provide services for the target perception terminal.

[0905] The embodiment of the present disclosure further provides a core network element, wherein the core network element is a first core network element, including:

[0906] a receiving unit, configured to receive a request message sent by the first RAN node;

[0907] 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 perception node handover related information, and the perception node handover related information is used by the first RAN node to perform the perception node handover.

[0908] In some embodiments, the sensing node handover related information includes sensing capability information supported by at least one second RAN node, where the sensing capability information supported by the second RAN node is used by the first RAN node to perform sensing RAN node handover.

[0909] The present disclosure also provides a terminal, including:

[0910] a sending unit, configured to send perception node handover related information to a first RAN node; wherein the perception node handover related information is used by the first RAN node to perform 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.

[0911] It should be noted here that the above-mentioned core network network element provided by the embodiment of the present disclosure 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 by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned wireless access network node side method embodiment, and the above-mentioned terminal provided by the embodiment of the present disclosure 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.

[0912] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0913] 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 disclosure is essentially or the part that contributes to the relevant technology 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 for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0914] An embodiment of the present disclosure 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.

[0915] 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 (MO)), etc.), optical storage (such as compact discs (CD), digital video discs (DVD), Blu-ray discs (BD), high-definition versatile discs (HVD), etc.), and semiconductor memory (such as ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.

[0916] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0917] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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 functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0918] 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.

[0919] 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.

[0920] In addition, it should be noted that, in the apparatus and method of the present invention, 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 invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them 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 will be understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0921] It should be noted that it should be understood that the division of the above modules is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; or they can all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, the determination module can be a separately established processing element, or it can be integrated into a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called by a processing element of the above-mentioned device to perform the functions of the above-mentioned determination module. The implementation of other modules is similar. In addition, these modules can all or partly be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed by the hardware integrated logic circuit in the processor element or by instructions in the form of software.

[0922] For example, each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above method, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code through a processing element, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0923] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein may be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units need not be limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, for example, A and / or B and / or C, means that seven situations are included: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and all A, B, and C present. Similarly, the use of "at least one of A and B" in the specification and claims should be understood to mean "A alone, B alone, or both A and B present."

[0924] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A sensing node switching method, comprising: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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 switch is required to be made to a RAN node serving the target perception terminal, and sends the target RAN node to the target RAN node. Perceive relevant information of the terminal; 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, comprising: 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, wherein: 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, wherein: 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, comprising: 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, wherein: 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, wherein: 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, comprising: 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 perception node switching process for the target perception node.

19. The sensing node switching method according to claim 18, wherein: 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, wherein: 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, wherein: 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, wherein: 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 sensing node switching related information sent by the third core network element includes the mobile Sexual analysis information.

23. The sensing node switching method according to claim 20 or 22, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, comprising a memory, a transceiver, and a processor; in, The memory is used to store the computer program; 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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 the perception assistance information to the target perception RAN node; wherein the perception assistance information Used for the target sensing RAN node to provide a sensing service, the sensing 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, wherein: 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, wherein: 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, wherein: 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, wherein the core network element is a first core network element, comprising: 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. The core network element according to claim 37, wherein: The perception node includes: a perception RAN node and / or a perception terminal.

39. The core network element according to claim 37 or 38, wherein: 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.

40. The core network element according to claim 37 or 39, wherein: The receiving unit is further configured to: 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.

41. The core network element according to claim 40, wherein: The core network element further includes at least one of the following: 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; 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; 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.

42. The core network element according to claim 37, wherein: In a case where the target aware node includes a target aware RAN node, the processing unit is further configured to: 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.

43. The core network element according to claim 37 or 39, wherein: The receiving unit is further configured to: 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 the terminal perception subscription information, and the 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.

44. The core network element according to claim 43, wherein: The core network element further includes at least one of the following: 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.

45. The core network element according to claim 37 or 43, wherein: In the case where the target sensing node includes a target sensing terminal, the processing unit is further configured to: In the case where it is determined that a switch is required to the RAN node serving the target perception terminal, determining the target a target RAN node, and sending relevant information of the target sensing 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.

46. ​​A sensing node switching device, comprising a memory, a transceiver, and a processor; in, The memory is used to store the computer program; 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.

47. The sensing node switching device according to claim 46, wherein: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

48. The sensing node switching device according to claim 46 or 47, wherein: 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.

49. A wireless access network node, comprising: 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.

50. A sensing node switching device, comprising a memory, a transceiver, and a processor; in, The memory is used to store the computer program; 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.

51. The sensing node switching device according to claim 50, wherein: The perception node includes: a perception radio access network RAN ​​node, and / or a perception terminal.

52. The sensing node switching device according to claim 50 or 51, wherein: 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.

53. A terminal, comprising: 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.

54. A sensing node switching device, comprising a memory, a transceiver, and a processor; in, The memory is used to store the computer program; 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.

55. The sensing node switching device according to claim 54, wherein: The perception node includes: a perception RAN node and / or a perception terminal.

56. The sensing node switching device according to claim 54, wherein: 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.

57. The sensing node switching device according to claim 54 or 56, wherein: The processor is configured to read the computer program in the memory and perform at least one of the following operations: Receive 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 the perception node of the second RAN node Capacity-related information; 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.

58. The sensing node switching device according to claim 56 or 57, wherein: 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.

59. The sensing node switching device according to claim 58, wherein: 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.

60. The sensing node switching device according to claim 54, wherein: 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.

61. The sensing node switching device according to claim 54 or 56, wherein: 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.

62. The sensing node switching device according to claim 54 or 61, wherein: 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.

63. A radio access network node, the radio access network node being a first radio access network RAN ​​node, comprising: 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.

64. The radio access network node according to claim 63, wherein: The perception node includes: a perception RAN node and / or a perception terminal.

65. The radio access network node according to claim 63 or 64, wherein: 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.

66. The radio access network node according to claim 63 or 65, wherein: The wireless access network node further includes at least one of the following: A first receiving unit, configured to receive the sensing node switching related information sent by a second RAN node; A second receiving unit, configured to receive the sensing node switching related information sent by a terminal; The third receiving unit is used to receive the perception node switching related information sent by the third core network element.

67. The radio access network node according to claim 66, wherein: 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.

68. The radio access network node according to claim 65 or 67, wherein: 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.

69. The radio access network node according to claim 68, wherein: The wireless access network node also includes: 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; 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.

70. The radio access network node according to claim 63, wherein: When the target-aware node includes a target-aware RAN node, the processing unit is further configured to: 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.

71. The radio access network node according to claim 63 or 65, wherein: In the case where the target perception node includes a target perception terminal, the wireless access network node further includes at least one of the following: A second determining unit, configured to determine the sensing node switching related information according to the obtained terminal sensing related information; The fifth receiving unit is used to receive the perception node switching related information sent by the source perception terminal.

72. The radio access network node according to claim 63 or 71, wherein: In the case where the target sensing node includes a target sensing terminal, the processing unit is further configured to: 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.

73. A processor-readable storage medium storing a computer program, wherein the computer program is used to cause 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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