Modile communicatoin system and its group service realizing method

Abstract

The mobile communication system includes base station receiver and transmitter, base station controller, mobile switching center / visiting location register and attribute location register / authority identifying center, as well as group server for group service control and dispatching stage. The group service is connected to mobile switching center via Map interface or E interface in IS41 to used as one part of the mobile switching center. The present invention has the advantages of low construction cost, capacity of group service of hetero network including various mobile communication networkand fixed communication network, capacity of full duplex group call and dispatching, etc.

Description

technical field [0001] The invention relates to a mobile communication system, provides a mobile communication system and a method for realizing trunking services, and is applicable to other types of public communication systems. Background technique [0002] The most important feature of trunking business is the ability to dispatch and group call. The function of dispatching means that the dispatching station calls up a certain number of terminals (wired or wireless) at the same time, so that these terminals can talk at the same time; Call up and talk at the same time, so as to achieve the effect of "one call, one hundred responses". Cluster services are widely used by private network users, such as the military, railways, and public security. [0003] In order to realize the trunking service, the traditional wireless system centrally modulates the called channels onto one channel, and all terminals listen to this channel, and only one terminal can occupy the channel to s...

AI Technical Summary

Problems solved by technology

In this way, multiple terminals can answer at the same time, but this can only be half-duplex. If one of the terminals needs to talk, it needs to apply to occupy the channel

Moreover, the existing mobile communication network does not have the functions of dispatching and group calling. If it is necessary to realize trunking services, the terminals and base stations in the mobile communication network will have to undergo major changes, and the signaling will also need to be changed. The terminal roaming in the medium also has the function of dispatching and group calling, which faces the problem of changing all base stations in the network

Therefore, according to the principle of trunking in traditional wireless systems, it is difficult for operators and users to accept trunking services in existing mobile communication networks.

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