Satellite communications systems, components and methods for operating shared satellite gateways

• US 7,653,348 B2
• Filed: 11/16/2005
• Issued: 01/26/2010
• Est. Priority Date: 11/16/2004
• Status: Active Grant

• Current Assignee: ATC Technology Corporation (FedEx Corporation)
• Original Assignee: ATC Technology Corporation (FedEx Corporation)
• Inventors: Karabinis, Peter D.
• Primary Examiner(s): Maung; Nay A
• Assistant Examiner(s): Tran; Paul P
• Application Number:
  US11/280,621
• Publication Number:
  US 20060105707A1
• Time in Patent Office: 1,532 Days
• Field of Search: 455/3.02, 455/3.03, 455/3.04, 455/3.05, 455/427, 455/12.1, 455 131- 133, 455/550, 455/552.1, 455/553, 455/554.1, 455/118, 455/178.1, 455/179.1, 455/180.1, 455/187.1, 455/188, 455/191.1, 455/197.3, 455/311, 455/323, 455/102, 455/127.1, 455/422.1, 455/451, 455/456.2, 455/552, 455/553.1, 455/561, 455/575.7, 455/67.11, 455/69, 455/73, 455/78, 455/93, 455/428, 455/429, 455/430, 455/431, 455/450, 455/104, 455/168.1, 455/452.1, 455/454, 370/315, 370/16, 370/278, 370/316, 370/317, 370/320, 370/325, 370/334, 370/338, 370/401, 343/702, 342/375.16, 342/155, 342/26.A, 375/211, 375/267
• US Class Current: 455/12.1
• CPC Class Codes: B64G 1/1007 Communications satellites
• CPC Class Codes: H04B 7/18517 Transmission equipment in earth stations

Abstract

A shared satellite gateway can be configured to process at least first and second communications signals associated with respective at least first and second space-based components. The at least first and second communications signals are provided to/from the shared satellite gateway by respective at least first and second service links and respective at least first and second feeder links of the respective at least first and second space-based components.

Claims

1. A satellite communications system comprising:

a gateway configured to process first and second communications signals associated with respective first and second service links and respective first and second feeder links of respective first and second space-based components;

wherein the first and second service links are in different respective first and second satellite frequency bands, wherein each one of the first and second service links comprises a forward service link and a return service link both of which are in the first or second satellite frequency band, and wherein the first and second feeder links are in different satellite frequency bands.

2. The satellite communications system according to claim 1 further comprising:

respective first and second gateway antennas coupled to the gateway, wherein each of the respective first and second gateway antennas is configured to communicate with at least one of the respective first and second space-based components.

3. The satellite communications system according to claim 2 wherein the respective first and second gateway antennas are configured to communicate with the respective first and second space-based components via the respective first and second feeder links in respective first and second frequency bands.

4. The satellite communications system according to claim 2 wherein the gateway further comprises two circuits, each of which comprises:

a first filter coupled to a gateway antenna;

a low-noise amplifier coupled to an output of the first filter;

a mixer coupled to an output of the low-noise amplifier; and

a second filter coupled to an output of the mixer.

5. The satellite communications system according to claim 4 further comprising:

a gateway element responsive to an output of at least one second filter.

6. The satellite communications system according to claim 1 wherein the respective first and second service links are configured to provide service to wireless terminals via respective air-interfaces that are substantially the same.

7. The satellite communications system according to claim 1 further comprising:

a single gateway antenna coupled to the gateway, wherein the single gateway antenna is configured to communicate with the respective first and second space-based components.

8. The satellite communications system according to claim 7 wherein the single gateway antenna is configured to communicate with the respective first and second space-based components over separate feeder links which are respectively in different first and second satellite frequency bands.

9. The satellite communications system according to claim 7 wherein the respective first and second space-based components are substantially co-located.

10. The satellite communications system according to claim 1 wherein the respective first and second service links are configured to provide service to wireless terminals via respective different first and second air-interfaces.

11. The satellite communications system according to claim 1 wherein at least one element of the gateway is shared by the respective first and second space-based components to provide a processing of the first and second communications signals.

12. The satellite communications system according to claim 1 wherein the first service link comprises L-band frequencies and the second service link comprises S-band frequencies.

13. The satellite communications system according to claim 12 wherein both forward and return links included in the first service link comprise L-band frequencies and both forward and return links included in the second service link comprise S-band frequencies.

14. The satellite communications system according to claim 13 wherein the first feeder link comprises ku-band frequencies and wherein the second feeder link comprises C-band frequencies.

15. A satellite communications system comprising:

a first space-based component that is configured to communicate with a plurality of first wireless terminals over first bi-directional service links which use exclusively frequencies of a first satellite frequency band in both directions;

a second space-based component that is configured to communicate with a plurality of second wireless terminals over second bi-directional service links which use exclusively frequencies of a second satellite frequency band in both directions, the second satellite frequency band being different from the first satellite frequency band; and

a satellite gateway that is configured to communicate with the first space-based component over a first feeder link and to communicate with the second space-based component over a second feeder link using at least one common signal processing element that is used by the satellite gateway to communicate with the first space-based component and to communicate with the second space-based component, wherein the first and second feeder links are in different satellite frequency bands.

16. The satellite communications system according to claim 15 wherein the satellite gateway comprises:

a first gateway antenna that is configured to communicate with the first space-based component over the first feeder link;

a second gateway antenna that is configured to communicate with the second space-based component over the second feeder link; and

a common gateway electronics system that is responsive to the first gateway antenna and to the second gateway antenna.

17. The satellite communications system according to claim 16 wherein the first service links and the second service links use substantially the same air interface.

18. The satellite communications system according to claim 16 wherein the first service links and the second service links use different air interfaces.

19. The satellite communications system according to claim 16 wherein the first and second space-based components are substantially co-located.

20. The satellite communications system according to claim 19 wherein the satellite gateway comprises:

a common gateway antenna that is configured to communicate with the first space-based component and the second space-based component over the first and second feeder links; and

a common gateway electronics system that is responsive to the common gateway antenna.

21. The satellite communications system according to claim 15 wherein the first and second space-based components are configured to communicate with the respective pluralities of first and second wireless terminals over the respective first and second service links in the respective first and second satellite frequency bands using substantially the same air interface.

22. The satellite communications system according to claim 15 wherein the first service link comprises L-band frequencies and the second service link comprises S-band frequencies.

23. The satellite communications system according to claim 22 wherein both forward and return links included in the first service link comprise L-band frequencies and both forward and return links included in the second service link comprise S-band frequencies.

24. The satellite communications system according to claim 23 wherein the first feeder link comprises ku-band frequencies and wherein the second feeder link comprises C-band frequencies.

25. A method of providing satellite communications;

the method comprising;

processing at a satellite gateway first and second communications signals associated with respective first and second service links and respective first and second feeder links of respective first and second space-based components;

wherein the first and second service links are in different respective first and second satellite frequency bands, wherein each one of the first and second service links comprises a forward service link and a return service link both of which are in the first or second satellite frequency band, and wherein the first and second feeder links are in different satellite frequency bands.

26. The method according to claim 25 wherein the satellite communications are provided by the respective first and second space-based components via respective different first and second air-interfaces.

27. The method according to claim 25 wherein processing comprises relaying information to/from a first space-based component and to/from a second space-based component via the satellite gateway.

28. The method according to claim 27 wherein relaying information comprises relaying internet communications, video information, and/or audio information, via the satellite gateway.

29. The method according to claim 25 wherein the first service link comprises L-band frequencies and the second service link comprises S-band frequencies.

30. The method according to claim 29 wherein both forward and return links included in the first service link comprise L-band frequencies and both forward and return links included in the second service link comprise S-band frequencies.

31. The method according to claim 30 wherein the first feeder link comprises ku-band frequencies and wherein the second feeder link comprises C-band frequencies.