Multiplex communications – Communication over free space – Repeater
Patent
1995-06-06
1997-06-17
Hsu, Alpus H.
Multiplex communications
Communication over free space
Repeater
370321, 342353, 375201, 455 121, 455 131, 455 74, H04B 7216, H04J 1302
Patent
active
056403860
ABSTRACT:
A system and method are disclosed for bidirectionally coupling a first satellite communication system to a second satellite communication system, wherein the first and second systems operate with different protocols. In a presently preferred embodiment of this invention the first system uses a spread spectrum (SS), code division multiple access (CDMA) technique wherein the satellites serve as simple `bent pipe` repeaters for relaying communications between a user and a gateway. The second satellite communication system may be any other type of system having at least one characteristic that precludes direct communication between the first and the second systems. In an exemplary embodiment the second system uses a time division multiple access (TDMA) technique, and furthermore enables direct satellite-to-satellite communication links. A ground-based protocol conversion unit (70) is positioned for receiving a communication from a satellite of either the first or the second system, and includes circuitry for converting the transmission into a transmission that is suitable for transmission into the other system.
REFERENCES:
patent: Re32905 (1989-04-01), Baran
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5008952 (1991-04-01), Davis et al.
patent: 5010317 (1991-04-01), Schwendeman et al.
patent: 5073900 (1991-12-01), Mallinckrodt
patent: 5081703 (1992-01-01), Lee
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5119225 (1992-06-01), Grant et al.
patent: 5216427 (1993-06-01), Yan et al.
patent: 5233626 (1993-08-01), Ames
patent: 5239670 (1993-08-01), Schwendeman et al.
patent: 5260967 (1993-11-01), Schilling
patent: 5287541 (1994-02-01), Davis et al .
patent: 5303286 (1994-04-01), Wiedeman
patent: 5339330 (1994-08-01), Mallinckrodt
patent: 5351269 (1994-09-01), Schilling
patent: 5410568 (1995-04-01), Schilling
patent: 5410728 (1995-04-01), Bertiger et al.
patent: 5415368 (1995-05-01), Horstein et al.
patent: 5422647 (1995-06-01), Hirshfield et al.
patent: 5433726 (1995-07-01), Horstein et al.
patent: 5439190 (1995-08-01), Horstein et al.
patent: 5446756 (1995-08-01), Mallinckrodt
patent: 5448623 (1995-09-01), Wiedeman et al.
patent: 5469468 (1995-11-01), Schilling
patent: 5481533 (1996-01-01), Honig e tal.
Petition of American Mobile Satellite Corporation Before the FCC, Washington, DC 20554, dated Jun. 3, 1991, pp. 1-15.
Application of Motorola Satellite Communications, Inc. for IRIDIUM A Low earth Orbit Mobile Satellite System before the FCC, Washington, D.C. Dec. 1990, pp. 49-96.
Before the FCC, Washington, D.C. 20554, Aries Constellation Low Earth Orbit Satellite System Proposal of Constellation Communications, Inc. Jun. 3, 1991, Appendix A, B, and C.
Application of TRW Inc. for Authority to Construct a New Communications Satellite System Odyssey before the FCC, Washington, D.C. 20554, May 31, 1991 pp. 33-51.
Application of Ellipsat Corporation Ellipsat for the Authority to Construct Ellipso I An Elliptical Orbit Satellite System, before the FCC, Washington, D.C. 20554, Nov. 2, 1990, pp. 5-34.
Application of Loral Cellular Systems, Corp., Globalstar Mobile Communications Wherever You Are, before the FCC, Washington, D.C. Jun. 3, 1991, pp. 94-187.
"An Integrated Satellite-Cellular Land Mobile System for Europe", E. Del Re, University of Florence, Dept. of Electronics Engineering, italy, Sep. 21, 1989.
"Current and Future Mobile Satellite Communication Systems", S. Kato et al., IEICE Trasactions, vol. F 74, No. 8 Aug. 1991, pp. 2201-2210.
"Digital Network Oriented Mobile Radio Satellite System as and Integrated Part of The GSM Cellular Radio System in Europe", P. Dondl, Deutsch Bundespost/Fernmeldetechniches Zentralmt/Darmstadt, Fed. Rep. Germ. Sep. 21, 1989.
"The OmniTRACS Mobile Satellite Communications and Positioning System ", E. Tiedemann, Jr. et al., Vehicle Electronics in the 90's; Proceedings of the In'l. Congress on Transporation Electronics, Oct. 1990.
"Software Implementation of a PN Spread Spectrum Receiver to Accommodate Dynamics", C. Cahn et al., IEEE Trans. on Comm., vol. COM-25, No. 8, Aug. 1977.
"A Communication Technique for Multipath Channels", R. Price, Proceedings of the IR, Mar. 1958, pp. 555-570.
"Increased Capacity Using CDMA for Mobile Satellite Communication", K. Gilhousen et al., IEEE Journal on Selected Areas in Communications, vol. 8, No. 4, May 1990, pp. 503-514.
"The Iridium System--A Revolutionary Satellite Communications System Developed with Innovative Applications of Technology", D. Sterling et al., IEEE, MILCOM 1991, Nov. 4-7.
"Iridium: Key to Worldwide Cellular Communications", J. Foley, Telecommunications, Oct. 1991, pp. 23-28.
Globalstar L.P.
Hsu Alpus H.
LandOfFree
Two-system protocol conversion transceiver repeater does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-system protocol conversion transceiver repeater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-system protocol conversion transceiver repeater will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2163316