Method and system for providing satellite communications using on-orbit payload configuration and reconfiguration

• US 7,327,698 B1
• Filed: 06/03/1999
• Issued: 02/05/2008
• Est. Priority Date: 06/03/1999
• Status: Expired due to Fees

• Current Assignee: Hughes Electronics Corporation (AT&T, Inc.)
• Original Assignee: The DIRECTV Group, Inc. (AT&T, Inc.)
• Inventors: Anselmo, Carl S.
• Primary Examiner(s): Urban; Edward F.
• Assistant Examiner(s): CHOW, CHARLES CHIANG
• Application Number:
  US09/325,110
• Time in Patent Office: 3,169 Days
• Field of Search: 370/316, 370/330, 370/329, 370/468, 370/319, 370/321, 370/323, 370/203, 370/400, 370/328, 370/238, 370/351, 370/325, 370/394, 370/389, 370/474, 370/315, 342/354, 342/359, 342/368, 342/371, 342/372, 342/373, 342/457, 455/12.1, 455/418, 455/98, 455/265, 455/275, 455/3.02, 455/575.1, 455/550.1, 455/63.1, 455/67.11, 455/256, 455/165.1, 455/136, 455/516, 455/515, 455/450, 455/13.2, 455/183.1, 455/179.1, 455/180.1, 455/13.3, 455255-260, 455/13.1, 455/427, 455/428, 455/429, 455/430, 455/431, 455/196.1, 244/176, 244/158.R, 244/164, 244/171, 343/388, 343/356, 343/100, 343/103, 343/105.R
• US Class Current: 370/316
• CPC Class Codes: H04B 7/18515 Transmission equipment in satellites or space-based relays

Abstract

A system for providing high frequency data communications in a satellite-based communications network includes a plurality of communications satellites each having uplink and downlink antennas capable of receiving and transmitting a plurality of signals. Each of said satellites have a communication control circuit. At least one of said satellites is reconfigurable. The reconfigurable satellite has a programmable frequency synthesizer coupled to the communications control circuit. A controller is located on the satellite and is coupled to the communications control circuit. The controller controls a frequency reconfiguration of the communications control circuit through the programmable frequency synthesizer.

Claims

1. A system for providing high frequency data communications in a satellite-based communications network, the system comprising:

a plurality of communications satellites each having uplink and downlink antennas capable of receiving and transmitting a plurality of signals, each of said satellites having a communication control circuit;

at least one of said satellites being a reconfigurable satellite having a programmable frequency synthesizer coupled to an up converter and a down converter of a communications control circuit;

a routing table storing tuning information therein;

a controller located on said satellite coupled to said communications control circuit, said controller controlling a frequency reconfiguration of said communications control circuit from a first frequency range to a second frequency range through said programmable frequency synthesizer in response to said tuning information.

2. A system as recited in claim 1 wherein each of said satellites further comprising a beam forming network coupled to said uplink and downlink antennas.

3. A system as recited in claim 1 wherein said communications control circuit comprises an up converter and a down converter.

4. A system as recited in claim 1 wherein said communications control circuit comprises a transponder.

5. A system as recited in claim 4 wherein said transponder comprises an up converter and a down converter.

6. A system as recited in claim 1 wherein said communications control circuit comprises a time division multiple access switch.

7. A system as recited in claim 1 wherein said communications control circuit comprises a packet switch.

8. A system as recited in claim 1 wherein said plurality of communications satellites have an orbit selected from the group consisting of a LEO, MEO and GSO.

9. A payload circuit for a satellite comprising:

a receive array;

a receive beam forming network;

a transmit array;

a transmit beam forming network;

a communications control circuit for controlling communications of said satellite, said communications control circuit being an up converter and a down converter; and

a reconfiguration circuit coupled to the communications control circuit for reconfiguring the communications control circuit, said reconfiguration circuit comprising a programmable frequency synthesizer coupled to the up converter and down converter, an on-board computer and a routing table having tuning information stored therein, said on-board computer controlling a reconfiguration of said communications control circuit from a first frequency range to a second frequency range through said programmable frequency synthesizer in response to said tuning information.

10. A payload circuit as recited in claim 9 wherein said communications control circuit comprises a transponder.

11. A payload circuit as recited in claim 10 wherein said transponder comprises the up converter and the down converter.

12. A payload circuit as recited in claim 9 wherein said communications control circuit comprises a time division multiple access switch.

13. A payload circuit as recited in claim 9 wherein said communications control circuit comprises a packet switch.

14. A method of configuring a satellite system having a plurality of satellites comprising the steps of:

deploying a reconfigurable satellite;

transmitting reconfiguration instructions to said satellite;

reconfiguring the frequency configuration of the payload of the reconfigurable satellite in response to the tuning information in a routing table by changing an up converter frequency and down converter frequency from a first frequency range to a second frequency range using a programmable frequency synthesizer;

repositioning a satellite from a network position; and

moving the reconfigurable satellite into the network position.

15. A method as recited in claim 14 wherein the step of reconfiguring a satellite comprises changing the amplitude or phase coefficients of a transmit and receive beam.

16. A method as recited in claim 14 further comprising storing tuning information in a routing table.

17. A method as recited in claim 14 wherein the step of reconfiguring the payload comprises changing the amplitude or phase coefficients of a beam in response to the tuning information in the routing table.

18. A method as recited in claim 14 wherein moving the reconfigurable satellite is performed using east/west station keeping.

19. A method as recited in claim 14 wherein moving the reconfigurable satellite is performed using north/south station keeping.

20. A method as recited in claim 14 further comprising updating the routing table from an order wire.

21. A method as recited in claim 14 further comprising updating the routing table from an RF control channel.

22. A method of configuring a satellite comprising:

deploying a reconfigurable satellite;

storing frequency tuning information in a routing table;

transmitting reconfiguration instructions to said satellite;

reconfiguring the frequency configuration of the payload of the reconfigurable satellite in response to the tuning information in the routing table by changing an up converter frequency and down converter frequency from a first frequency range to a second frequency range using a programmable frequency synthesizer.

23. A method as recited in claim 22 wherein the step of reconfiguring the payload comprises changing the amplitude or phase coefficients of a beam in response to the tuning information in the routing table.

24. A method as recited in claim 22 further comprising updating the routing table from an order wire.

25. A method as recited in claim 22 further comprising updating the routing table from an RF control channel.