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.
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[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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