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Method and device for user plane reselection

A user plane and receiving user technology, applied in the field of communication, can solve the problems of increasing delay and signaling resource consumption

Active Publication Date: 2020-08-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current solution includes the release process and the establishment process. These two processes require a large amount of signaling interaction between the mobile terminal and network elements such as the SMF, the original UPF, and the new UPF, which increases the delay and the consumption of signaling resources.

Method used

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  • Method and device for user plane reselection
  • Method and device for user plane reselection
  • Method and device for user plane reselection

Examples

Experimental program
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Effect test

Embodiment Construction

[0041] A PDU session is established in the user equipment (Use Equipment, UE). Currently, when the UE moves out of the service range of the UPF corresponding to the PDU session, in order to provide better services to the UE, the SMF on the network side sends a reestablishment request message to the UE. Trigger UE to perform user plane reselection. Triggered by the re-establishment request message, the UE executes a release procedure for releasing the path between the UE and the UPF, and then executes an establishment procedure for establishing a path between the UE and another UPF, so as to realize user plane reselection.

[0042] When the UE performs the release process and the establishment process, a large amount of signaling interaction between the UE and the network side is required. According to rough statistics, the number of interaction steps between the UE and the network side for signaling interaction in these two processes exceeds 20 steps, which increases the delay....

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PUM

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Abstract

The invention discloses a method and a device for user plane reselection, and belongs to the field of communication. The method comprises the steps of receiving a position of user equipment (UE) and asession identifier of a packet data unit (PDU) session of the UE by a session management function (SMF); and modifying a user plane path of the PDU session into a path between the UE and a second UPF(User Plane Function) by the SMF when the session mode of the PDU session corresponding to the session identifier is a preset mode and the position of the UE or the service capacity needed by the UEis beyond the service range of the first UPF corresponding to the PDU session. The method and device for user plane reselection can reduce time delay and consumption of signal resources.

Description

technical field [0001] The present application relates to the communication field, in particular to a method and device for user plane reselection. Background technique [0002] With the development of communication technology, users can use mobile terminals to surf the Internet or send and receive short messages. Wherein, in the signaling plane, the session management function (Session Management Function, SMF) located in the core network can allocate resources such as the user plane function (User Plane Function, UPF) to the mobile terminal. In the user plane, a path (also called a connection) may be established between the mobile terminal and the UPF, and the mobile terminal may send or receive service data through the path. However, the mobile terminal sometimes moves greatly and leaves the service range of the UPF. In order to provide better services for the mobile terminal, it is necessary to reselect the user plane at this time. The so-called reselecting the user pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/32
CPCH04W36/0016H04W36/0033H04W36/32
Inventor 孙德奎周汉吴问付
Owner HUAWEI TECH CO LTD