Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Patent
1997-12-04
2000-10-31
Hsu, Alpus H.
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
455513, H04B 7216, H04B 1034
Patent
active
061413356
ABSTRACT:
In a cellular radio communication system including a plurality of base stations and a plurality of terminals in which one cell is divided into a plurality of sectors, each of the base stations transmits and receives control information by an omnidirectional beam and transmits and receives traffic information by a directional beam. Alternatively, each of the base stations transmits and receives control information by a directional beam with a time difference of the same control information in a plurality of sectors within one cell and transmits and receives traffic information by a directional beam.
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Doi Nobukazu
Hanaoka Seishi
Kuwahara Mikio
Uta Takaki
Hitachi , Ltd.
Ho Duc
Hsu Alpus H.
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