Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1996-11-21
1998-09-08
Louis-Jacques, Jacques H.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
455524, 455561, 455562, H04B 700
Patent
active
058060014
ABSTRACT:
A radio base station of a portable telephone system designed so as to establish a service area by transmission of radio waves so that radio communication is performed with a plurality of mobile stations existing in the service area, the radio base station comprising a plurality of antennas and control means for controlling transmission of a control data signal, which is to be time-divisionally transmitted at a predetermined interval, in a manner so as to transmit the control data signal by using the plurality of antennas into a plurality of directions in each of which a radiation beam of each antenna is made narrow to give directivity and in a condition that offset is given in transmission to the respective directions so as to transmit the control data signal into the directions in phases different from each other. Preferably, the offset for the respective directions is set to be N/m (msec.), where N (msec.) represents the predetermined interval and m represents the number of the plurality of directions.
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Arthur Gertrude
Kyocera Corporation
Louis-Jacques Jacques H.
LandOfFree
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