Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1996-05-21
1998-02-24
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
455503, 375356, H04B 700
Patent
active
057220816
ABSTRACT:
The object of the present invention is to perform synchronizing adjustment of reception timings of radio waves at a reception point without the necessity of an approach line and a receiving station from an exchange to a receiver and without being influenced by a condition of approach lines to all radio base stations. Exchange 10 is connected to GPS 20 and includes, in the inside thereof, approach line supervision unit 75 for supervising a condition of the approach lines and calculating transmission delay times from the condition of the approach lines, transmission time setting unit 15 for setting a time at which transmission radio waves should arrive at an overlap zone, data base 30 in which position information of the overlap zone is stored, and a controller 35 for transmitting information to the radio base stations. Radio base station 40-1 is connected to GPS 50-1 and includes, in the inside thereof, controller 46-1 for outputting a transmission message, and delay calculation unit 45-1 for calculating a radio wave arrival time from a transmitter to the overlap zone.
REFERENCES:
patent: 4696051 (1987-09-01), Breeden
patent: 5287550 (1994-02-01), Fennell et al.
Eisenzopf Reinhard J.
Le Thanh
NEC Corporation
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