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

Abstract

The invention relates to a mobile exchange center with internal video gateway, which comprises a media gateway and a media gateway controller, wherein the media gateway is arranged with a video gateway unit for communicating the multimedia between the third-generation network and the fixed communication network. The invention also discloses a relative communication method. With said invention, the multimedia communication can avoid additive network construction and operation cost, and the calling process can avoid alternative route, to effectively avoid resource waste and improve the communication quality of multimedia.

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 ...

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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 with MRS first, and then negotiate with 3G mobile terminals. In this case, if the results of the two negotiations are inconsistent, VIG needs to negotiate with MRS again. As a result, the call processing process is complicated; however, if the MRS does not support renegotiation, the VIG needs to complete the capability negotiation with the 3G mobile terminal first, but this situation usually leads to errors in MSC billing

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