Telecommunications – Transmitter and receiver at separate stations
Patent
1992-08-28
1996-08-27
Faile, Andrew
Telecommunications
Transmitter and receiver at separate stations
455 331, 455 333, 455 541, 455 62, 379 59, 343890, H04B 700
Patent
active
055510604
ABSTRACT:
A re-use partition of cells in a mobile communication system has an outer cell (30) and an inner cell (20) which is provided in the outer cell (30). An interval of cells using the same channel or the same frequency in the inner cells is shorter than an interval in the outer cells, which is the nature of a re-use partition. Communication between a base station and a mobile station is carried out by using a channel having a higher received level of an outer cell channel or an inner cell channel. A base station has a first beam tilt antenna having tilt angle (.THETA..sub.out) for an outer cell (30), and a second beam tilt antenna having tilt angle (.THETA..sub.in) so that .THETA..sub.in is larger than .THETA..sub.out. A speech channel and a control channel are provided for each of the first antenna and the second antenna.
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Fujii Teruya
Sakamoto Masayuki
Faile Andrew
Nippon Telegraph and Telephone Corporation
To Doris
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