Paging method using power shifted transmitters

Details Paging method using power shifted transmitters Paging method using power shifted transmitters

1995-09-05

1996-11-12

Faile, Andrew

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 511, 455 383, 455 331, H04B 726

Patent

active

055749755

ABSTRACT:
Transmitters (18) in a two-way radio communication system (10) transmit location inquiries to subscribing pagers (14), each transmission occurring at a given power output level. Each pager (14) is capable of responding with an acknowledgment signal identifying a particular transmitter whose signal was captured. Messages are sent to those pagers which respond with proper acknowledgments. To locate a pager which failed to acknowledge receipt of a signal from a particular transmitter, the power output level of at least one transmitter, and preferably a group of transmitters, is changed, and the transmitters re-transmit the location inquiry at the changed power output levels. A similar power-shifting technique is provided for transmitters in a one-way communication system.

REFERENCES:
patent: 5457808 (1995-10-01), Osawa et al.
patent: 5533094 (1996-07-01), Sanmugam

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