Method and system for providing wideband communications to mobile users in a satellite-based network
First Claim
1. A global wideband satellite-based communications system, comprising:
- a plurality of GEO satellites in a geostationary earth orbit constellation, and a plurality of MEO satellites in a medium earth orbit, each one of said GEO satellites having at least two intersatellite links, a first link for communicating with one of said plurality of MEO satellites and a second link for communicating with another one of said GEO satellites, and each one of said GEO and MEO satellites having uplink and downlink antennas for receiving and transmitting signals from and to earth, a full digital packet switch, a bent-pipe repeater, and a hybrid switch, controlled by said controller, for routing traffic from one beam that is destined for another beam through said full digital packet switch bypassing said bent-pipe repeater.
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Abstract
A satellite-based communications system operating at high data rates includes a plurality of satellites each having uplink and downlink antennas for transmitting and receiving a plurality of signal utilizing a plurality of spot beams to and from a plurality of coverage areas at a predetermined range of frequencies. The system also includes a plurality of user terminals for transmitting and receiving signals to and from the plurality of communications satellites at the predetermined range of frequencies and at one of the first plurality of data rates. Each of the user terminals having a steerable antenna for tracking relative movement of each of the user terminals with respect to each of the plurality of communications satellites are for tracking movement of each of the plurality of communications satellites in order to maintain communications with the plurality of communications satellite.
393 Citations
16 Claims
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1. A global wideband satellite-based communications system, comprising:
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a plurality of GEO satellites in a geostationary earth orbit constellation, and a plurality of MEO satellites in a medium earth orbit, each one of said GEO satellites having at least two intersatellite links, a first link for communicating with one of said plurality of MEO satellites and a second link for communicating with another one of said GEO satellites, and each one of said GEO and MEO satellites having uplink and downlink antennas for receiving and transmitting signals from and to earth, a full digital packet switch, a bent-pipe repeater, and a hybrid switch, controlled by said controller, for routing traffic from one beam that is destined for another beam through said full digital packet switch bypassing said bent-pipe repeater. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A global wideband satellite-based communications system, comprising:
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a plurality of GEO satellites in a geostationary earth orbit constellation, and a plurality of IGSO satellites in inclined geosynchronous orbit, each one of said GEO satellites having at least two intersatellite links, a first link for communicating with one of said plurality of IGSO satellites and a second link for communicating with another one of said GEO satellites, and each one of said GEO and IGSO satellites having uplink and downlink antennas for receiving and transmitting signals from and to earth, a full digital packet switch;
a bent-pipe repeater, and a hybrid switch, controlled by said controller, for routing traffic from one beam that is destined for another beam through said full digital packet switch bypassing said bent-pipe repeater.- View Dependent Claims (12, 13, 14, 15, 16)
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Specification