Cellular type mobile communication system capable of efficiently

Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers

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455 62, 455 63, 455453, H04Q 720

Patent

active

060352086

ABSTRACT:
In a mobile communication system comprising base stations (11, 12) covering microcells (16, 17) and a base station (13) covering a macrocell (18), each of the base stations (11, 12) monitors utilization conditions in speech channels to produce a monitored result indicative of the utilization conditions and controls transmission power on the basis of the monitored result. Responsive to a communication request, each base station (11, 12, 13) selects, as a selected speech channel, one of the speech channels and assigns the selected speech channel when the selected speech channel has a power ratio of a desired wave to an interference wave that is not less than a predetermined level.

REFERENCES:
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patent: 5499395 (1996-03-01), Doi et al.
patent: 5579373 (1996-11-01), Jang
patent: 5666654 (1997-09-01), Kanai
patent: 5771454 (1998-06-01), Ohsawa
patent: 5787358 (1998-07-01), Takahashi
patent: 5828948 (1998-10-01), Almgren et al.
patent: 5828963 (1998-10-01), Grandhi et al.

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