Method for transmitting local area/wide area messages and select

Details Method for transmitting local area/wide area messages and select Method for transmitting local area/wide area messages and select

1996-02-26

1998-04-14

Faile, Andrew

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

455 63, H04B 7005, H04B 701, H04B 7015, H04B 1500

Patent

active

057405417

ABSTRACT:
A method in a communication system (100) having a high power transmitter (104) for transmitting messages to selective call receivers (102) located within a wide coverage area (114), and having at least one low power transmitter (108) for transmitting messages to selective call receivers (102) located within a smaller, overlapping coverage area (112). The transmitters (104,108) transmit on the same frequency but during different time intervals, except that mutually remote, low power transmitters can transmit simultaneously. A selective call receiver (102), adapted to operate in the communication system, and having a special arrangement of canned messages (412), can determine its location based, at least in part, on the time interval during which it received a message.

REFERENCES:
patent: 3836974 (1974-09-01), Wells
patent: 4506384 (1985-03-01), Lucas

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