Method, device and system of data acquisition in attachment process

Abstract

The invention relates to a data acquisition technology in the attachment process, which belongs to the technical field of mobile communication. The invention discloses a method, a device and a system of data acquisition in the attachment process, which are used for ensuring the continuity of service when the user device is switched to a 3GPP access system from a non-3GPP access system. The methodof data acquisition comprises the following steps: an attachment request message carried with an attachment type and transmitted by the user device is received; when the attachment type is a switchingattachment, a position update message is transmitted to a local user server belonging to the user device; and the grouped data network gateway address information used before switching the user device is obtained in the insert user data information returned back from the local user server.

Description

A data acquisition method, device and system in the attachment process technical field The present invention relates to the technical field of mobile communication, in particular to a data acquisition technology in an attachment process. Background technique The 3rd Generation Partnership Project (3GPP) access system of the Evolved Packet System (EPS) includes Universal Terrestrial Radio Access Network (UTRAN), GSM / EDGE Radio Access Network (GSM / EDGE Radio Access Network, GERAN), Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN), and so on. In the E-UTRAN initial attachment (InitialAttach) process defined in TS23.401, it is clearly pointed out that the new mobility management entity (MobilityManagementEntity, MME) sends a location update (UpdateLocation) message to the home subscriber server (HomeSubscriberServer, HSS). One of the following three conditions is met: 1) The new MME is different from the old M...

AI Technical Summary

Problems solved by technology

2) There is no valid subscription context (Context) for the UE in the new MME;

3) The terminal identity of the UE has not changed

Therefore, the IP connection of the UE cannot be reserved, and the continuity of the service is destroyed.

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