Mobile switching centre built in video gateway and method for realizing multimedia interconnection

Abstract

A mobile exchange center inserted a video gateway includes two portion of a media gateway and a media gateway controller, in which said media gateway is embedded with a video gateway unit for realizing multimedia intercommunication between the 3G and the fixed communication network. A method is used for realizing intercommunication between the 3G and fixed communication network by said mobile exchange center. The multimedia intercommunication is realized by using said mobile exchange center and method without increasing additional cost of building network, running and maintenance. And it can avoid a waste of system source and increase the communication quality of the multimedia service, because of existing circuitous route in the course of a call.

Description

technical field [0001] The present invention relates to multimedia intercommunication technology, in particular to a mobile switching center (MSC) with a built-in video gateway (VIG), and a method for realizing multimedia intercommunication between a third generation (3G) network and a fixed communication network by using the mobile switching center method. Background technique [0002] With the upcoming commercial use of 3G networks, mobile multimedia services, as a characteristic service of 3G networks, have also begun to attract widespread attention. If the characteristics of mobility and roaming of the mobile network are combined with the multimedia services of the traditional fixed communication network, the development of integrated multimedia services based on the multimedia resources of the two networks will undoubtedly bring greater convenience to users. [0003] However, the multimedia services of the fixed communication network are mainly carried by the Internet ...

AI Technical Summary

Problems solved by technology

[0009] 1. The above-mentioned method of realizing the intercommunication between the 3G network and the fixed communication network needs to install VIG equipment between the two networks, which results in high investment, operation and maintenance costs;

[0010] 2. For some special services such as multimedia CRBT service, when a mobile user calls a mobile user who subscribes to the CRBT service, MSC needs to route the call to VIG first, and then VIG realizes the intercommunication with the multimedia CRBT platform, so as to Call the user to play the color ring tone, and when the calling user and the called user are connected, although the VIG is no longer needed during the call process, the VIG will always exist as a call relay, thus causing a detour route for the call and occupying the VIG. resources, resulting in waste of resources;

[0011] 3. In the above process, VIG can negotiate capabilities with MRS first, and then negotiate capabilities with 3G mobile terminals. In this case, if the two negotiation results are inconsistent, VIG needs to negotiate capabilities with MRS again, so that Complicated call processing procedures; however, if MRS does not support renegotiation, VIG needs to complete capability negotiation with 3G mobile terminals first, but this situation usually leads to errors in MSC billing

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