H - Electricity – 04 – B
Patent
H - Electricity
04
B
344/18, 325/30
H04B 7/26 (2006.01) H04Q 7/26 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 1310097
25307-204 ABSTRACT The present invention is a channel changing system in a mobile unit communication system comprising a plurality of radio base stations making communication with movable stations through radio channels and a center station for accommodating such base stations and connecting these base stations with the public telephone network. The center station is configured comprising a private branch exchange for accommodating the public telephone network and the lines extending from a plurality of base stations and a controller for controlling changing of communication channels by supervising the signal receiving condition between a movable station and a plurality of base stations. The controller is configured so that it issues a channel changing command by detecting, based on the signal receiving condition, that a movable station has transferred to the radio zone of an adjacent base station from the radio zone of a certain base station, while the private branch exchange conducts line changing depending on such command through the extension transfer to the line of adjacent base station from the line to the relevant base station.
588944
Fetherstonhaugh & Co.
Fujitsu Limited
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