H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/31
H04B 7/26 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 1143439
Abstract of the Disclosure There is provided a mobile transmission system wherein a plurality of radio zones, each including one radio base station, the base stations of all radio zones being controlled by a control center which controls a paging and an origination of a mobile, are arranged to form a service area, and each radio zone is provided with at least one mobile access channel and a single mobile paging channel assigned with a radio fre- quency common to all radio zones, thus enabling to establish speech channels for the mobiles. The frequency of the mobile access channel is made to be different for adjacent radio zones and one or more frequencies are allocated to each base station. The control center is provided with means for controlling an origination of the mobile for selecting at least one channel among available channels allocated to a radio base station associated with the mobile, circuit switching means operatively connected to the origination control means, for establishing the mobile access channel, and means for broadcasting a channel number of the established mobile access channel to all radio zones through the mobile paging channel. Each mobile is pro- vided with a receiver for receiving the channel number of the mobile access channel, means for updating and storing the received channel number, and means for sequentially receiving radio waves transmitted through the stored access channel and for comparing received field intensities to select a mobile access channel adapted to send out an origination signal of the mobile.
372615
Macrae & Co.
Nippon Electric Co. Ltd.
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