Geographic-area selective low-earth satellite-based paging broad

Details Geographic-area selective low-earth satellite-based paging broad Geographic-area selective low-earth satellite-based paging broad

1992-08-24

1995-03-07

Eisenzopf, Reinhard J.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455 132, 455 381, 34082544, H04B 7185

Patent

active

053966430

ABSTRACT:
The present invention includes a low-earth satellite-based paging broadcast system (100) and method (200, 300) that maximizes spectral efficiency and minimizes power expenditure for the broadcast of paging messages by broadcasting the messages to terminator- or originator-selectable portions of the total system coverage area. The terminator selects a long-term preferred geographic area (LTPGA), and optionally, a short-term preferred geographic area (STPGA). The originator provides the terminator ID, the message, and optionally provides a customized preferred geographic area (CPGA). Terminators and originators can easily modify the selectable geographic areas (SGA(s)): LTPGA(s), STPGA(s), and CPGA(s). The gateway converts the SGA(s) to addressable coverage areas (ACA(s)), and transmits a signal including the paging information, and ACA(s) to at least a first communication satellite (COM SAT). The COM SAT(s) provide for crosslinking the signal to other COM SAT(s) and for broadcasting the paging information to the ACA(s).

REFERENCES:
patent: 5010317 (1991-04-01), Schwendeman
patent: 5239670 (1993-08-01), Schwendeman et al.

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