User's device attaching method

Abstract

The present invention provides 3 GPP evolution network user equipment attachment method, suitable for mobile communication field, which contains when user equipment user equipment originating attachment request to core network, indicating whether needing calling session control proxy functional entity P- CSCF IP address. The present invention obtains P- CSCF IP address in UE attachment process, after attachment completing UE capable of making IMS registry, for simplifying subscriber service connection establishment signaling process and reducing service connection time delay.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a user equipment attachment method. Background technique [0002] The existing GPRS (General Package Radio Service, General Packet Radio Service) / UMTS (Universal Mobile Telecommunications System, Universal Mobile Telecommunications System) network structure is as follows: figure 1 As shown, a structure similar to that of the second generation mobile communication system is adopted, including UMTS (Universal Mobile Telecommunications System, universal mobile communication system) terrestrial radio access network (UMTSTerritorial Radio Access Network, UTRAN), GSM / EDGE radio access network ( GSM / EDGE Radio Access Network, GERAN), core network (Core Network, CN) and user equipment (User Equipment, UE). Among them, GERAN / UTRAN is used to implement all wireless-related functions, while CN handles all voice calls and data connections in the GPRS / UMTS system, and is used to impleme...

AI Technical Summary

Problems solved by technology

[0029] The purpose of the present invention is to provide a user equipment attachment method in the 3GPP evolved network, aiming at solving the problem in the prior art that the UE cannot know the IP address of the P-CSCF during the attachment process, resulting in the inability to register in the IMS after the attachment is completed

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