Inceptive filtering criterion process method of optimized IP multimedia subsystem

Abstract

The invention discloses a method for optimizing iFC processing in IMS, which comprises the following steps: the invention increases mark ID on iFC of HSS, DSAI is explicitly connected with iFC throughiFC mark ID; and DSAI determines whether the correlation iFC is downloaded into S-CSCF or not; if DSAI is activated, the correlation iFC will be downloaded into S-CSCF, otherwise the correlation iFCcan not be downloaded into S-CSCF. AS modifies user service information and judges whether the corresponding iFC of AS of the user exists in local memory or not, if the iFC is not existed, the methodreads iFC corresponding to AS and correlation DSAI. AS device orderly judges whether every iFC relating to all service is activated or not, if yes, the DSAI value is activated, and if not, the DSAI value is not activated; and then the method judges whether reading DSAI value is in line with the DSAI value, if not in line with the DSAI value, then the method will modify the correlation DSAI value from HSS. The user registers S-CSCF and requests to download user data. HSS judges DSAI value relative to every iFC, if DSAI value is activated, the correlation iFC is downloaded to S-CSCF, and otherwise the correlation iFC can not be downloaded to S-CSCF. The invention overcomes defects of DSAI treatment in 3 GPP protocol. The explicit correlation between DSAI and iFC can improve the applicabilityof net unit application. The method reduces redundancy and improves operational efficiency.

Description

technical field [0001] The present invention relates to an IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) in the field of telecommunication, and in particular to a method for initial filter criterion (initial Filter Critic, iFC) processing. Background technique [0002] In the IP multimedia subsystem, control and business are separated, and the Serving-Call Session Control Function (S-CSCF) controls the call session, and the business logic is implemented by the application server (Application Server, AS) Yes, the basic configuration information of the user is stored in the home subscriber server (Home Subscriber Server, HSS), which includes the user's initial filter criteria (iFC), which is mainly composed of the AS name and the corresponding trigger conditions. The S-CSCF triggers the service in the AS through the iFC. During the IMS user registration process, the iFC is downloaded from the HSS to the S-CSCF. During the IMS user registration and session process, if...

AI Technical Summary

Problems solved by technology

[0012] The technical problem solved by the present invention is to provide a method for optimizing the initial filtering standard processing in the IP multimedia subsystem, so as to solve how to improve the association mode and processing method of the initial filtering standard of the dynamic service activation information, and overcome the dynamic service activation information on the 3GPP protocol (DSAI) processing method defects, reduce operational redundancy and improve processing efficiency

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