Low earth orbit communication satellite gateway-to-gateway relay system (US5758261)


	Parent Case:			This is a continuation of application Ser. No. 08/465,938 filed on Jun. 6, 1995, U.S. Pat. No. 5,634,190.
	Designated Country:			AU BR MX RU SG UA DE FI FR GB IT
	Family:			Show 10 known family members
	First Claim: Show all 21 claims			What is claimed is: 1. A communication system, comprising: at least first and second earth orbiting satellites individual ones of which comprise means for transceiving first communication signals with terrestrially located user terminals and for transceiving second communication signals with terrestrially located stations, said first communication signals being within a first band of frequencies and said second communication signals being within a second band of frequencies, said at least two earth orbiting satellites having first and second terrestrial coverage areas, respectively; and at least one terrestrial repeater station that is located within an overlapped region between said first and second terrestrial coverage areas, said at least one terrestrial repeater station being comprised of a transceiver for receiving a first communication signal in said first band of frequencies from a first one of said satellites associated with said first satellite coverage area and for transmitting in said first band of frequencies said received first communication signal to a second one of said satellites associated with said second satellite coverage area, whereby a communication forward link is established between a first station located within said first satellite coverage area and a second station located within said second satellite coverage area.
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	Forward References:			Show 42 U.S. patent(s) that reference this one

U.S. References:

Go to Result Set: All U.S. references | Forward references (42) | Backward references (27) | Citation Link

Patent	Pub.Date	Inventor	Assignee	Title
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US5410728	1995-04	Bertiger et al.	Motorola, Inc.	Satellite cellular telephone and data communication system
US5415368	1995-05	Horstein et al.	TRW Inc.	Medium-earth-altitude satellite-based cellular telecommunications
US5422647	1995-06	Hirshfield et al.	Space Systems/Loral, Inc.	Mobile communication satellite payload
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US5439190	1995-08	Horstein et al.	TRW Inc.	Medium-earth-altitude satellite-based cellular telecommunications
US5446756	1995-08	Mallinckrodt	Celsat America, Inc.	Integrated cellular communications system
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USRE32905	1989-04	Baran	Equatorial Communications Company	Satellite communications system and apparatus
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Foreign References:

Publication	Date	IPC Code	Assignee	Title
EP0421698A3	1991-10	H04B 7/185	MOTOROLA, INC.	Method of predicting cell-to-cell hand-offs for a satellite cellular communications system
WO9013186	1990-11	G01S 5/00	GEOSTAR CORPORATION	COMMUNICATION SYSTEM EMPLOYING MULTIPLE RELAY SATELLITES OPERATING ON COMMON DOWNLINK FREQUENCY
WO9109473	1991-06	H04B 7/185	MOTOROLA INC	SATELLITE BASED ACKNOWLEDGE-BACK PAGING SYSTEM