Method and system for gracefully closing registration

Abstract

The invention discloses a method and a system for gracefully closing registration. The method comprises the following steps: AGCF carrying the PUI of a corresponding subscriber initiates a graceful registration closing request to the home service calling conversation control function (S-CSCF) of the corresponding subscriber and carries graceful closing state parameters in a registration request signaling; and the S-CSCF transmits the graceful registration closing request carrying the graceful closing state parameters to an AS, and the AS sets the corresponding subscriber as the graceful closing state. The method and the system enable the management mode of the subscriber state to be more efficient and reasonable, optimize the performance of the control level and enhance the perception of the subscriber.

Description

technical field [0001] The present invention relates to the field of IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) of Next Generation Network (NGN, Next Generation Network), especially the traditional access gateway accessing the IMS network through Access Gateway Control Function (AGCF, Access Gateway Control Function) A method and system for realizing graceful shutdown registration. Background technique [0002] IMS is a subsystem supporting IP multimedia services proposed by the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) in the Release5 version. Its core feature is that it adopts the Session Initiation Protocol (SIP, Session Initiation Protocol) and has nothing to do with access sex. Under the development trend of network convergence, 3GPP, European Telecommunications Standards Institute (ETSI, European Telecommunications Standards Institute) and International Telecommunications Union Telecommunication Standardization Sector (I...

AI Technical Summary

Problems solved by technology

It can be seen that the existing technology has the following obvious defects: first, under the IMS network, the call flow is controlled in the CSCF and the AS, and the AGCF is unreasonable as an access device to control the call flow; second, in the figure 2 In the topological structure diagram of , on the AGCF1 side, when user 1 (USER1) in the graceful shutdown state is called, the call service can be continued from the AS to the CSCF, and the call is not rejected until the call enters the AGCF. At this time, the call has entered a very deep level, so the efficiency is relatively poor, and because the service is not rejected immediately, the user perception is also relatively poor, from the perspective of performance, rejection is not the best solution at this time

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