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PDU session information recovery method and terminal

A technology of session information and recovery method, applied in the field of 5G network communication, can solve problems such as large processing pressure of 5G core network, and achieve the effect of reducing processing pressure

Active Publication Date: 2022-06-24
FUJIAN SUNNADA NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this recovery method, when there are many user equipments, a large number of user equipments re-apply to establish PDU sessions, which will cause great processing pressure on the 5G core network.

Method used

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  • PDU session information recovery method and terminal
  • PDU session information recovery method and terminal
  • PDU session information recovery method and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Please refer to figure 1 , the first embodiment of the present invention is:

[0067] A recovery method of PDU session information, such as figure 1 shown, including steps:

[0068] S1. The SMF network element receives the PDU session establishment request initiated by the user equipment, generates PDU session information, and sends it to the UPF network element;

[0069] S2. The UPF network element solidifies and stores the PDU session information;

[0070] S3. When the UPF network element restarts, automatically acquire the stored PDU session information.

[0071] That is, in this embodiment, the PDU session information delivered by the SMF network element is stored in a fixed manner through the UPF network element. When the UPF network element fails and restarts, the PDU session information stored in the UPF network element can be restored locally by itself, and the user can continue to serve the user. The equipment provides business services, and the user equipm...

Embodiment 2

[0072] Please refer to figure 2 and image 3 , the second embodiment of the present invention is:

[0073] A method for restoring PDU session information, on the basis of the above-mentioned first embodiment, in this embodiment, the establishment, storage and restoration process of PDU session information is as follows figure 2 shown. The UPF network element side is divided into three functional modules: PDU session application module, PDU session management module and PDU session solidification storage module.

[0074] In this embodiment, step S2 is specifically:

[0075] S21. The PDU session management module of the UPF network element receives and parses the PDU session information;

[0076] S22. The PDU session management module sends the parsed PDU session information to the PDU session application module and the PDU session solidification storage module respectively.

[0077] That is, the session information is managed uniformly by the PDU session management modul...

Embodiment 3

[0087] Please refer to Figure 4 , the third embodiment of the present invention is:

[0088] A recovery terminal 1 for PDU session information, comprising a memory 2, a processor 3, and a computer program stored in the memory 2 and running on the processor 3, and the processor 3 implements the above-mentioned embodiment 1 or Steps in a method for recovering PDU session information in the second embodiment.

[0089]To sum up, the present invention provides a method and terminal for recovering PDU session information. The three functional modules divided in the UPF network element respectively parse and distribute the PDU session information delivered by the SMF network element, establish and communicate with the user equipment. The data transmission channel is used for packet forwarding and storage of PDU session information in the local memory. The division of labor is clear. When the UPF NE fails and restarts, the PDU session information stored in the UPF NE can be restored...

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Abstract

The invention provides a PDU session information recovery method and a terminal, and the method comprises the steps: an SMF network element receives a PDU session establishment request initiated by user equipment, generates PDU session information, and sends the PDU session information to a UPF network element; the UPF network element carries out solidification storage on the PDU session information; and when the UPF network element is restarted, automatically acquiring the PDU session information which is stored in a solidified manner. The PDU session information issued by the SMF network element is solidified and stored through the UPF network element, the PDU session information solidified and stored through the UPF network element can be automatically and locally recovered after the UPF network element is restarted due to a fault, and the recovered PDU session information is reported to the SMF network element for verification, so that the accuracy of the recovered PDU session information is ensured, business service is continuously provided for user equipment, and the user experience is improved. And the user equipment does not need to re-establish the PDU session, so that the processing pressure of the 5G core network is greatly reduced.

Description

technical field [0001] The present invention relates to the technical field of 5G network communication, in particular to a method and terminal for recovering PDU session information. Background technique [0002] In the fifth generation mobile communication (5G) network, in order to communicate with the data network (DN), a user equipment (UE) needs to establish a PDU session, that is, a data transmission channel between the user equipment and the data network. [0003] In the 5G system architecture, the user plane functional entity (UPF) is the data forwarding plane of the 5G core network system, which is used to forward and process user data service packets in the 5G network. [0004] The PDU session of the user equipment is mainly managed and maintained by the session management function (SMF) of the 5G core network. After the PDU session is established, the SMF network element will create data detection and forwarding rules for the PDU session and other PDU session info...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W76/16H04W76/19H04L67/14
CPCH04W36/0011H04W76/16H04W76/19H04L67/14
Inventor 宋永磊
Owner FUJIAN SUNNADA NETWORK TECH CO LTD