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Method for determining user plane links, MME (mobile management entity) and eNodeB

A user plane and link technology, applied in the field of communication, can solve problems that affect the normal communication of the UE, do not know whether the link is reachable, and the UE cannot successfully attach, etc.

Inactive Publication Date: 2017-07-07
CHINA MOBILE GROUP SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Among them, the link established between the eNodeB and the SGW is called the S1-U user plane link in the LTE system (abbreviated as the user plane link). It does not know whether the link established between the selected SGW and the eNodeB is reachable. If the link between the eNodeB and the SGW selected by the MME is not reachable, the radio bearer resource establishment fails , the UE cannot attach successfully, seriously affecting the normal communication of the UE

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  • Method for determining user plane links, MME (mobile management entity) and eNodeB
  • Method for determining user plane links, MME (mobile management entity) and eNodeB
  • Method for determining user plane links, MME (mobile management entity) and eNodeB

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no. 1 example

[0093] The present invention provides a first embodiment of a method for determining a user plane link, and the method is applied in an MME. Such as figure 2 As shown, the method includes:

[0094] Step 201: Obtain the identities of the evolved base station eNodeB and the serving gateway SGW whose user plane link is abnormal;

[0095] Here, when the terminal fails to attach, the eNodeB where the terminal resides will send a terminal attach failure message to the MME. The message carries an attach failure cause value, and the cause value is used to indicate the eNodeB and SGW that sent the attach failure message The user plane link established between them is abnormal.

[0096] Since the SGW is the SGW provided by the MME for the eNodeB during the failed attach process, the MME can learn the identity of the SGW provided by itself to the eNodeB. Before the UE learns that the current attach request fails, the UE first initiates an attach request to the network, and the MME re...

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Abstract

The invention discloses a method for determining user plane links. The method includes the following steps that: the identifiers of eNodeBs and SGWs (Serving Gate Way) of which the user plane links are abnormal are obtained; a first list is obtained according to the identifiers of the eNodeBs and the SGWs; and when an attachment request of a terminal is received, an SGW which can establish a normal user plane link with a first eNodeB is determined based on the first list, wherein the first eNodeB is an eNodeB in which the terminal resides. The invention also discloses an MME (mobile management entity), another method for determining user plane links and an eNodeB. The corresponding relations of the identifiers of the eNodeBs and the SGWs of which the user plane links are abnormal are recorded in the first list; the SGW which can establish the normal user plane link with the first eNodeB is determined based on the first list; and therefore, the accessibility of S1-U user plane links can be ensured at least.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for determining a user plane link, a Mobility Management Entity (MME, Mobility Management Entity) and an evolved base station eNodeB. Background technique [0002] In a Long Term Evolution (LTE, Long Term Evolution) network, before a terminal (UE, User Equipment) performs a communication service, network attachment needs to be performed first. Such as figure 1 As shown, the attachment process is: [0003] Step 101: The terminal initiates an attach request to the MME; [0004] Step 102: The MME completes the UE's authentication, location registration and other processes with the user's home server (HSS, Home Subscriber Server); [0005] Step 103: MME selects a matching Serving Gateway (SGW, Serving Gate Way) / public data network (PDN, PublicData Network) gateway (PGW, PDN Gate Way) for the eNodeB through the Domain Name System (DNS, Domain Name System), a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04
CPCH04W24/04
Inventor 樊士杨
Owner CHINA MOBILE GROUP SICHUAN
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