Service call session control function entity backup method and system thereof

Abstract

The invention discloses an S-CSCF alternate method and system, which is characterized by the following: building AS in the S-CSCF; sending user information to other S-CSCF working with S-CSCF at load share pattern at successful registering time; reserving other S-CSCF in the user information to realize the third registering for user; duplicating the needed dynamic data of S-CSCF in the HSS; transferring the business request of accident S-CSCF at network side to other S-CSCF at S-CSCF accident time; downloading the dynamic data and practice information from HSS according to the third registering information if S-CSCF receives the business request of the third part registered user; providing service for user continually.

Description

Technical field [0001] The invention relates to a SIP multimedia subsystem, and particularly relates to a backup technology inside the SIP multimedia subsystem. Background technique [0002] The mobile communication system can meet people's requirements for communication anytime and anywhere, and it has developed rapidly since its appearance. With the introduction and further development of the third generation mobile communication (The Third Generation, "3G") technology, the bandwidth of mobile networks has greatly increased. Mobile communication will not only be limited to traditional voice communication, but also combine audio, video, pictures, and Multimedia services such as texts and other media types will gradually develop. The combination of mobile communication and data services such as presence, short message, web browsing, location information, push service (PUSH), and file sharing can provide users with more service options. For example, instant messaging, chat rooms, ...

AI Technical Summary

Problems solved by technology

[0007] In practical applications, the above solution has the following problems: when the S-CSCF fails, the services of the relevant users cannot be restored in time, so the continuity of services cannot be maintained, which affects the user experience

[0008] The main reason for this situation is that, in the prior art, once an S-CSCF fails, users served by the failed S-CSCF will not be able to continue to obtain services until these users who cannot continue to obtain services register again , to resume normal session handling for these users

However, since a short registration interval will generate a large amount of communication traffic, the interval between user registrations is generally longer, about tens of minutes

That is to say, if the user registration interval is several tens of minutes, then the user who cannot continue to obtain services due to the faulty S-CSCF will still be unable to resume normal sessions within the user registration interval of tens of minutes Processing, which affects the user experience

Moreover, even after the faulty S-CSCF recovers, if these users do not re-register, service may not be restored immediately

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