Apparatus and method for controlling signal transmission between BSC and MSC servers

Abstract

The invention provides a signal transmission method for controlling between a plurality of BSCs and a plurality of MSC servers in the MSC media gateway of the mobile soft switching network. According to the invention, a media gateway includes a plurality of groups of ports, namely divided into a plurality of virtual media gateways logically, wherein the virtual media gateways share the function and the resource of the media gateway, thereby realizing the communication between the plurality of BSCs and the plurality of MSC servers. According to the method and the device of the invention, the resource sharing and the load balance are effectively realized, the number of the mobile management is reduced, the position updating and switching are reduced, the complexity of the network planning is reduced, and the networking is convenient without changing the MSC server and the BSC.

Description

technical field [0001] The invention relates to a mobile communication network, in particular to a media gateway in a soft-switch-based mobile communication network. Background technique [0002] For the existing mobile operators, the introduction of softswitch technology into the mobile local network provides an opportunity to solve the problems existing in the 2G switching network. In the most original mobile softswitch network structure, it is assumed that there are two MSC (Mobile Switching Center, Mobile Switching Center) servers, each MSC server is connected to two media gateways (MGW, Media Gateway), and each media gateway is connected to two BSC (Base Station Controller), in real-life scenarios, each MSC server can be connected to multiple media gateways, and each media gateway can be connected to multiple BSCs. Each MSC server covers a different service area. Once one of the MSC servers fails, the BSCs in the service area covered by the MSC server cannot communicat...

AI Technical Summary

Problems solved by technology

[0007] Although the MSC server pool solution has certain advantages, it still has the following disadvantages: For the first mode, it is necessary to make great changes to the MSC and BSC of the existing mobile softswitch network during networking: in the MSC pool technology , since a BSC is connected to multiple MSC servers, the MSC server must be able to assign a temporary subscriber identity (TMSI) containing the network resource identifier (NRI) of the local office to the user. When an uplink call comes in, the BSC can obtain the network Resource identifier (NRI), find out the serving MSC server according to the corresponding relationship between the NRI and the MSC server saved by itself, and can distribute the initial non-access stratum message to the serving MSC server; if the user's NRI cannot be obtained, the BSC can Using the load balancing algorithm, select one of the MSC servers in the MSC pool that is not offloaded and the signaling point is reachable, as the user's service MSC server, and can distribute the initial non-access layer message to the service MSC server

At the same time, because a BSC is connected to multiple media gateways in this mode, it will lead to excessive configuration of time division multiplexing (TDM) resources between the BSC and the media gateways

[0009] In addition, for the above two modes, there are at least the following common disadvantages: for the downlink, once the user location information data is lost due to the MSC server failure, it is necessary to do global paging to find the location of the user, so that will cause a large amount of signaling

MSC pool technology has many technical solutions that are not very mature, which brings great risks to the use

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