Calling end and called end quick calling establishment method for mobile communication system

Abstract

The invention provides the fast call method between the calling and the being called in a mobile communications system, simplifying the NAS signaling order between the UE and the CN in the call process, omitting authentication, encryption, security patterns and TMSI re-allocation process in the call setting process. As we have completed the authentication encryption, safe mode orders when users switch on the machine, cyclical location updating and routing updates, so the encrypted authentication, security model are not needed in call setup time. For the business itself, data can be encrypted at the operational level, which would guarantee the safety of operations, and save the time. By optimizing the non-Signaling access layer, the invention achieves reducing the time of call setting. The method can reduce call, set up delay and increase users' terminal satisfaction.

Description

technical field

[0001] The invention relates to a call establishment method in a mobile communication system, in particular to a quick call / session establishment method for a calling terminal and a called terminal in a third-generation mobile communication system (UMTS). Background technique

[0002] In a communication system, the duration of call setup (also called call setup delay or connection delay) is an important factor affecting the user's service quality. At present, the call setup delay in the UMTS system is relatively long (generally 6-10 seconds), this kind of call establishment delay cannot meet the quality of service of the delay-sensitive business. For example, VOIP service, PoC service is a typical VoIP service. When PoC is applied to TD-SCDMA or WCDMA system, the delay in call establishment will lead to the degradation of service quality, or even become unacceptable. The purpose of the invention is to reduce the call establishment delay and improve user sati...

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