Realizing method for broadcasting service in CDMA digital cluster system

A technology of digital trunking system and broadcasting service, which is applied in the direction of code division multiplexing system, branch office providing special service device, data exchange details, etc., and can solve the problem that the trunking communication system cannot realize broadcasting service, etc.

Inactive Publication Date: 2008-03-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the shortcoming that the existing CDMA standard trunking communication system cannot realize the broadcasting service, in order to propose a method for realizing the broadcasting service function in the CDMA standard digital trunking system

Method used

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  • Realizing method for broadcasting service in CDMA digital cluster system
  • Realizing method for broadcasting service in CDMA digital cluster system

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Embodiment Construction

[0022] The method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0023] Broadcasting service is an important service feature in a trunking system. It can make full use of limited wireless resources. In an emergency, it can command and dispatch a relatively concentrated group of people, and the number of users receiving information is relatively large. The broadcast service works in a half-duplex mode, that is, the initiator of the broadcast can speak, while all other users in the system can only answer and have no right to speak.

[0024] In the process of realizing the broadcast service, a dedicated broadcast service channel BFCH (Broadcast Fundamental Channel) is used to transmit broadcast information. In each cell that needs to establish a broadcast service, a BFCH is established, and all broadcast users in the cell use this A BFCH is used to receive broadcast information. This broadcast tr...

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Abstract

The method includes following steps: 1) dispatching desk originates a broadcast request to trunking dispatching server; 2) the trunking dispatching sever transmits the broadcast request message to dispatching client-side; 3) the trunking dispatching client-side originates broadcast request to base station; 4) the base station builds broadcast channel at each sector; 5) the base station informs the trunking dispatching client-side that the channel is established; 6) the trunking dispatching client-side transmits channel distribution message to base station; 7) the base station informs channel parameter of channel; 8) the terminal captures broadcast channel and starts to monitor.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a method for realizing a broadcast service in a trunked mobile communication system of CDMA (Code Division Multiplex Access, Code Division Multiple Access) system. Background technique [0002] With the increasingly widespread application of mobile communication systems in various fields such as economy and social life, mobile communication system technology itself is also developing rapidly, from the second-generation mobile communication system that is currently widely used to the mature and perfect third-generation mobile communication system. The development of technology is increasingly meeting the needs of users for communication systems. More and more effectively meet the needs of value-added services including video, audio, and real-time multimedia service interaction, so that mobile communication systems play an increasingly important role in people's lives and wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/28H04L12/18H04J13/02
Inventor 蔡安刘金龙薛育红
Owner ZTE CORP
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