Simulcast scheduler

Details Simulcast scheduler Simulcast scheduler

1993-07-16

1994-08-02

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 132, 455 561, H04B 7005, H04B 7185

Patent

active

053353579

ABSTRACT:
A selective call terminal receives selective call information from a message originator. A transmission time is scheduled for the selective call message by a selective call system controller. A plurality of simulcast schedulers coupled to the controller receive and store the selective call message and the transmission time. The simulcast schedulers have an equalization time stored therein, the equalization times for each of the simulcast schedulers calculated by the system controller using simulcast receivers for measuring signal time differences between transmitters. The simulcast schedulers provide the selective call message to corresponding transmitters at a time to transmit the selective call message, the time determined by the transmission time and the equalization time. Transmitter settings and code types defining signalling protocol, data bit rate, carrier frequency and transmitter power, for each message are varied in accordance with information received from the system controller. Each simulcast scheduler can also function as a selective call terminal for a local selective call system.

REFERENCES:
patent: 4696051 (1987-09-01), Breeden
patent: 4850032 (1989-07-01), Freeburg
patent: 5014344 (1991-05-01), Goldberg
patent: 5038403 (1991-08-01), Leitch

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