CN-122029852-A - Information transmission method, core network device, communication system, and storage medium

Abstract

The present disclosure relates to an information transmission method, a core network device, a communication system, and a storage medium. The information transmission method comprises the steps that first core network equipment receives first information sent by second core network equipment, and the first information is associated with a user plane of a terminal. Therefore, the first core network device can actively acquire the user plane information of the terminal, and conditions are provided for the first core network device to reliably execute the service.

Inventors

• GONG YUBING
• TANG TINGFANG

Assignees

• 北京小米移动软件有限公司

Dates

Publication Date

20260512

Application Date

20240912

Claims (20)

1. An information transmission method, performed by a first core network device, the method comprising: and receiving first information sent by second core network equipment, wherein the first information is associated with a user plane of the terminal.
2. The method of claim 1, further comprising, prior to said receiving the first information sent by the second core network device, any of: And sending a first request to the second core network device, wherein the first request is used for subscribing to an event associated with the user plane of the terminal, or the first request is used for requesting to inquire information associated with the user plane of the terminal.
3. The method of claim 2, wherein the first request is for subscribing to an event associated with a user plane of the terminal, the method further comprising: And receiving a first response sent by the second core network device, wherein the first response is used for indicating a first subscription result.
4. A method according to claim 3, wherein the first response includes a report of a first event associated with the user plane of the terminal.
5. The method according to any one of claims 2-4, wherein the first request comprises at least one of an identification of the terminal, a data network name DNN, single network slice selection assistance information S-NSSAI, a packet data unit PDU session identification, a target event to which the first request is subscribed, an event identification, a filter of events, and event reporting information.
6. The method of claim 5, wherein the event identification is an identification of any one of: terminal user plane reachability; Terminal user plane availability; Terminal user plane status; Terminal reachability; The third generation partnership project 3GPP packet switched PS Data of the terminal closes the Data Off state; 3GPP PS Data Off state change of terminal; Terminal user plane state information; PDU session creation, modification, or release request.
7. The method of claim 5, wherein the type of parameter in the event filter is associated with a user plane, and wherein the parameter value in the event filter is used to indicate any of a change in reachability status of the user plane of the terminal, a change in user plane status, a change in 3GPP PS Data Off status for downstream traffic to the user plane of the terminal.
8. The method of any of claims 5-7, wherein the target event comprises at least one of: a reachability event for the terminal; An end user plane reachability event; An end user plane availability event; an end user plane state event; terminal user plane state information events; a 3GPP PS Data Off state change event for the terminal; The 3GPP PS Data Off state of the terminal, PDU session creation, modification, or release request.
9. The method according to any of claims 5-8, further comprising, prior to said sending the first request to the second core network device: determining to use a location service user plane protocol (LCS-UPP) to perform location service, and sending a second request to the terminal through the second core network equipment, wherein the second request is used for requesting to establish user plane connection; And receiving a second response sent by the terminal through the second core network equipment, wherein the second response is used for indicating the connection establishment failure of the user plane.
10. The method of claim 9, wherein the second response includes a user plane connection establishment failure cause, the user plane connection establishment failure cause being any of a PDU session failure, a transport layer security TLS connection failure, an LCS-UP connection binding failure, a user plane unavailability, a protocol error, and other causes.
11. The method of any of claims 5-10, wherein the first information comprises at least one of the event identification, the target event, third generation partnership project 3GPP packet switched PS data off state indication information, packet data unit PDU session identification, status of the PDU session, the PDU session status allowed, and a timestamp.
12. The method of any one of claims 1-11, wherein the method further comprises: The first information indicates any one of updating a stored user plane state of the terminal, changing the user plane state of the terminal, availability of the user plane of the terminal, changing 3GPP PS Data Off of the terminal, deactivating 3GPP PS Data Off of the terminal, establishing PDU session of the terminal, releasing PDU session of the terminal, and modifying PDU session of the terminal.
13. An information transmission method, performed by a second core network device, the method comprising: and sending first information to first core network equipment, wherein the first information is associated with a user plane of the terminal.
14. The method of claim 13, further comprising, prior to said sending the first information to the first core network device: And receiving a first request sent by the first core network device, wherein the first request is used for subscribing to an event associated with a user plane of the terminal, or requesting to inquire information associated with the user plane of the terminal.
15. The method of claim 14, wherein the first request is for subscribing to an event associated with a user plane of the terminal, the method further comprising: And sending a first response to the first core network device, wherein the first response is used for indicating a first subscription result.
16. The method of claim 15, wherein the first response includes a report of a first event associated with a user plane of the terminal.
17. The method according to any of the claims 13-16, wherein the first request comprises at least one of an identification of the terminal, a data network name DNN, single network slice selection assistance information S-NSSAI, a packet data unit PDU session identification, an identification of the target event to which the first request is subscribed, an event identification, an event filter, event report information.
18. The method of claim 17, wherein the event identification is an identification of any one of: terminal user plane reachability; Terminal user plane availability; Terminal user plane status; Terminal reachability; The third generation partnership project 3GPP packet switched PS Data of the terminal closes the Data Off state; 3GPP PS Data Off state change of terminal; Terminal user plane state information; PDU session creation, modification, or release request.
19. The method of claim 17, wherein the type of parameter in the event filter is associated with a user plane, and wherein the parameter value in the event filter is used to indicate any of a change in reachability status of the user plane, a change in user plane status, a change in 3GPP PS Data Off status for downstream traffic to the user plane of the terminal.
20. The method of any of claims 17-19, wherein the target event comprises at least one of: a reachability event for the terminal; An end user plane reachability event; An end user plane availability event; an end user plane state event; terminal user plane state information events; a 3GPP PS Data Off state change event for the terminal; The 3GPP PS Data Off state of the terminal, PDU session creation, modification, or release request.

Description

Information transmission method, core network device, communication system, and storage medium Technical Field The disclosure relates to the field of communication technologies, and in particular, to an information transmission method, a core network device, a communication system, and a storage medium. Background A User Plane in the communication system may be used for transmitting User data between the terminal and the core network device. When the terminal activates the third generation partnership project (3rd Generation Partnership Project,3GPP) packet switched (PACKET SWITCHING, PS) Data to close Off function, the user plane will no longer be used to transmit network protocol (Internet Protocol, IP) Data packets etc. related to the 3GPP network unless these Data belong to the 3GPP PS Data cancellation exempt service (3 GPP PS Data Off Exempt Services) related Data. Disclosure of Invention The embodiment of the disclosure provides an information transmission method, core network equipment, a chip system, a storage medium, a computer program and a computer program product, which can be applied to the technical field of communication and are used for solving the technical problem of how to acquire the reachability of a user plane of a terminal by an LMF (local mean square function) under the condition that the terminal does not request to establish the user plane connection. The disclosure provides an information transmission method, a core network device, a communication system and a storage medium. According to a first aspect of the embodiments of the present disclosure, an information transmission method is provided, which is executed by a first core network device, and includes receiving first information sent by a second core network device, where the first information is associated with a user plane of a terminal. According to a second aspect of the embodiments of the present disclosure, an information transmission method is provided, which is performed by a second core network device, comprising sending first information to a first core network device, the first information being associated with a user plane of a terminal. According to a third aspect of the embodiments of the present disclosure, an information transmission method is provided, including that a second core network device sends first information to a first core network device, where the first information is associated with a user plane of a terminal. According to a fourth aspect of the embodiments of the present disclosure, a first core network device is provided, which includes a transceiver module configured to receive first information sent by a second core network device, where the first information is associated with a user plane of a terminal. According to a fifth aspect of the embodiments of the present disclosure, a second core network device is provided, which includes a transceiver module configured to send first information to a first core network device, where the first information is associated with a user plane of a terminal. According to a sixth aspect of the embodiments of the present disclosure, a communication device is provided, including one or more processors, where the processor is configured to invoke an instruction to cause the communication device to perform the information transmission method of any of the first aspect, the second aspect, and the third aspect. According to a seventh aspect of the embodiments of the present disclosure, a communication system is provided, which is characterized by comprising a first core network device and a second core network device, where the first core network device is configured to implement the information transmission method of the first aspect, and the second core network device is configured to implement the information transmission method of the second aspect. According to an eighth aspect of an embodiment of the present disclosure, there is provided a storage medium storing instructions, characterized in that the instructions, when executed on a communication device, cause the communication device to perform the information transmission method as any one of the first aspect, the second aspect, the third aspect. According to a ninth aspect of the embodiments of the present disclosure, a computer program product is proposed, comprising a computer program, which when executed by a processor implements the information transmission method according to any one of the first, second and third aspects. Drawings In order to more clearly illustrate the technical solutions in the embodiments or the background of the present disclosure, the following description will explain the drawings that are required to be used in the embodiments or the background of the present disclosure. Fig. 1 is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure; FIG. 2 is an interactive schematic diagram of an information transm