Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1994-05-02
1995-09-19
Pham, Chi H.
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455 132, 455 331, 455 334, 455 342, 455 62, 455 63, 379 59, H04B 726, H04B 7185, H04Q 738
Patent
active
054524717
ABSTRACT:
A hierarchical communication network includes primary, secondary, and tertiary communication systems. The primary system uses orbiting satellites as communication nodes and forms a pattern of cells that may cover the entire earth and that move over the earth. A given spectrum is divided among the cells in accordance with a reuse plan. Any number of secondary, terrestrial-based systems have secondary region areas of coverage that are substantially smaller than the distance to the orbits of the satellites used by the primary system. Secondary systems monitor the primary system to determine which channels of the spectrum are available for use in their secondary regions. Any number of tertiary, terrestrial-based systems reside within a secondary region and have tertiary region areas of coverage that are substantially confined within buildings. Tertiary systems use channels concurrently used by the primary system in the same area where their tertiary regions are located.
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Leopold Raymond J.
Vatt Gregory B.
Zancho William F.
Gorrie Gregory J.
Handy Robert M.
Motorola Inc.
Pham Chi H.
Wisler Mark D.
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