Method, device and system for realizing PDA connection release

Abstract

The invention provides a method for realizing PDA connection release, which comprises the following steps that: when the subscription data of a user in an HSS changes, the HSS informs an MME to trigger the release of PDA connection; according to the information of the HSS, the MME requests a Severing GW and a PDN GW to delete all loads under the PDN connection; and the MME requests a user terminal to activate the all loads under the PDN connection. The invention also provides a device and a system for realizing PDA connection release. The method, the device and the system of the invention can solve the problem that UE fails to initiate a release process of PDN connection when the subscription data of the user changes and the problem of reestablishing DefaultAPN connection when the Default APN of the UE is deleted and make a few changes to the prior system and strengthens system functions.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method, device and system for realizing PDN connection release. Background technique [0002] In the current mobile communication system, when it is necessary to release the PDN (Packet Data Network, packet data network) Connection connection, the release process of the PDN connection is usually initiated by the UE (User Equipment, user terminal); this release process has been adopted by the standard TS23.401v8 .2.0 as defined in Section 5.10.3, as figure 1 shown, including the following steps: [0003] 1. The UE sends a PDN Disconnection Request (PDN Disconnection Request) (LBI) message to the MME (Mobility Management Entity, mobility management entity); where the LBI indicates the default bearer of the separated PDN; [0004] 2. After receiving the PDN separation request message, the MME sends a Delete Bearer Request (Delete BearerRequest) (TEID, LBI) m...

AI Technical Summary

Problems solved by technology

[0012] However, it should be noted that when the subscription data of the user in the HSS changes, especially when the APN currently used by the UE is deleted, and the UE is using this APN, according to the current method standard, the UE cannot initiate a PDN connection The release process, that is, the release of the PDN connection cannot be achieved, and a new solution is needed for this

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