Repeater trunking system

Details Repeater trunking system Repeater trunking system

H - Electricity

04

B

325/9

H04B 7/155 (2006.01)

Patent

CA 1185326

REPEATER TRUNKING SYSTEM ABSTRACT OF THE DISCLOSURE Arrangement for establishing communication between a first mobile radio station and a second mobile radio station through a repeater over a radio frequency channel selected from a plurality of such channels. In an idle mode, a mobile station searches the channels for a pre- determined group signal identifying it as belonging to a particular group of mobile stations. When that predeter- mined group signal is received on a channel, the mobile station is enabled on that channel so that it can communicate with a call originating mobile station belonging to the same group. In a call originate mode, a mobile station searches for an idle or unused channel identified by the absence of a busy signal. When an idle channel is found, the call originating station transmits a busy signal. The repeater, hearing the busy signal, transmits an acquisition signal. This acquisition signal is detected by the call originating mobile station which thereafter transmits a predetermined group signal for enabling other mobile stations in the common group on that same channel.

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