Network comprising base stations for selectivity calling mobile

Details Network comprising base stations for selectivity calling mobile Network comprising base stations for selectivity calling mobile

1997-05-14

1999-08-10

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

455524, 455 312, 370312, H04B 726

Patent

active

059373571

ABSTRACT:
For selective call of mobile units operable at different bit rates, a central station announces a launch start instant of each signal frame to a plurality of base stations based on phase coincident clocks used individually in the central and the base stations. Responsive to call requests of the different bit rates, their time sequential order in each signal frame, and a switching instants of switching one of the bit rates to another, the base stations transmit the call radio signals starting simultaneously in phase coincidence at the launch start instant Preferably, the central and the base stations deal with the requests as packets. Any one of the base stations can reduce its transmission power of the call radio signals if a failure is found therein in one of the call requests delivered thereto.

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