Reducing service outages in a multibeam satellite system

• US 7,599,657 B2
• Filed: 07/07/2005
• Issued: 10/06/2009
• Est. Priority Date: 06/25/2002
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Schiff, Leonard Norman
• Primary Examiner(s): GESESSE, TILAHUN
• Application Number:
  US11/177,616
• Publication Number:
  US 20050272370A1
• Time in Patent Office: 1,552 Days
• Field of Search: 375/200, 375/211, 370/318, 455/13.4, 455/10, 455/427, 455/429, 455/428, 455/431, 455/12.1, 455/13.1, 455/13.2
• US Class Current: 455/13.2
• CPC Class Codes: H04B 7/18513 Transmission in a satellite or space-based system
• CPC Class Codes: H04B 7/18534 for enhancing link reliablility, e.g. satellites diversity
• CPC Class Codes: H04B 7/2041 Spot beam multiple access

Abstract

A satellite is linked to a number of gateways by a number of feeder links. When a degraded link is detected among the feeder links, communications are switched from the degraded link to a diversity link shared among the feeder links. In one embodiment, the diversity link is connected to a diversity gateway located outside a service area of the satellite. In another embodiment, the diversity link comprises channels distributed among the feeder links within the service area.

Claims

1. A system for reducing service outages in a geosynchronous multibeam satellite system, the system comprising;

a plurality of feeder links to a single geosynchronous multibeam satellite of the geosynchronous multibeam satellite system, each feeder link comprising a predetermined number of channels, the predetermined number of channels comprising active channels and diversity channels;

a means for detecting at least one degraded feeder link from the plurality of feeder links; and

a recoverable network routing protocol apparatus for switching the active channels of the at least one degraded feeder link to the diversity channels of at least one unaffected feeder link from the plurality of feeder links, said unaffected feeder link being located in a remote location from the affected feeder link to serve at least one user as the affected feeder link.

2. The system of claim 1 further comprising:

a plurality of gateways, each gateway corresponding to each feeder link; and

the recoverable network routing protocol apparatus comprising a means to switch a first gateway corresponding to the at least one degraded feeder link to at least one second gateway corresponding to the at least one unaffected feeder link.

3. The system of claim 2 where in the recoverable network routing protocol apparatus comprises a network commanded switching apparatus.

4. The system of claim 2 wherein the at least one second gateway comprises at least one second gateway outside of a service region.

5. The system of claim 2 wherein the at least one second gateway comprises at least one second gateway inside of a service region.

6. The system of claim 2 wherein the at least one second gateway comprises a combination of at least one second gateway inside of a service region and at least one gateway outside of the service region.

7. The system of claim 1 wherein the recoverable network routing protocol apparatus comprises a means for redirecting traffic from the active channels of the degraded feeder link to the diversity channels of the feeder link or feeder links that the traffic is redirected to.

8. The system of claim 1 wherein the recoverable network routing protocol apparatus comprises an internet system.

9. The system of claim 1 wherein the recoverable network routing protocol apparatus comprises an intranet system.

10. A method for reducing service outages in a geosynchronous multibeam satellite system, the method comprising the steps of:

providing a plurality of feeder links to a single geosynchronous multibeam satellite of the geosynchronous multibeam satellite system, each feeder link comprising a predetermined number of channels, the predetermined number of channels comprising active channels and diversity channels;

detecting at least one degraded feeder link from the plurality of feeder links; and

switching the active channels of the at least one degraded feeder link to the diversity channels of at least one unaffected feeder link from the plurality of feeder links via a recoverable network routing protocol apparatus, said unaffected feeder link being located in a remote location from the affected feeder link to serve a same at least one user as the affected feeder link.

11. The method of claim 10 further comprising:

providing a plurality of gateways, each gateway corresponding to each feeder link; and

switching a first gateway corresponding to the at least one degraded feeder link to at least one second gateway corresponding to the at least one unaffected feeder link via the recoverable network routing protocol apparatus.

12. The method of claim 11 wherein the step of switching via a recoverable network routing protocol apparatus comprises switching via a network commanded switching apparatus.

13. The method of claim 11 further comprising locating the at least one second gateway outside of a service region.

14. The method of claim 11 further comprising locating the at least one second gateway inside of a service region.

15. The method of claim 11 further comprising locating the at least one second gateway inside of a service region and locating at least one second gateway outside of the service region.

16. The method of claim 10 further comprising redirecting traffic from the active channels of the degraded feeder link to the diversity channels of the feeder link or feeder links that the traffic is redirected to, by the recoverable network routing protocol apparatus.

17. The method of claim 10 wherein the recoverable network routing protocol apparatus comprises an internet system.

18. The method of claim 10 wherein the recoverable network routing protocol apparatus comprises an intranet system.

19. A storage media comprising program instructions which are computer-executable to implement a reduction of service. outages in a geosynchronous multibeam satellite system, the storage media comprising:

program instructions that cause a plurality of feeder links to be associated to a single geosynchronous multibeam satellite of the geosynchronous multibeam satellite system, each feeder link comprising a predetermined number of channels, the predetermined number of channels comprising active channels and diversity channels;

program instructions that cause at least one degraded feeder link from the plurality of feeder links to be detected; and

program instructions that cause the active channels of the at least one degraded feeder link to the diversity channels of at least one unaffected feeder link to be switched from the plurality of feeder links via a recoverable network routing protocol, said unaffected feeder link being located in a remote location from the affected feeder link to serve a same at least one user as the affected feeder link.

20. The storage media of claim 19 further comprising:

program instructions that cause a provision of a plurality of gateways, each gateway corresponding to each feeder link; and

program instructions that cause a first gateway corresponding to the at least one degraded feeder link to be switched to at least one second gateway corresponding to the at least one unaffected feeder link via the recoverable network routing protocol.

21. The storage media of claim 20 wherein the program instructions to switch via the recoverable network routing protocol comprises program instructions to switch via a network commanded switching apparatus.

22. The storage media of claim 20 wherein the at least one second gateway is located outside of a service region.

23. The storage media of claim 20 wherein the at least one second gateway is located inside of a service region.

24. The storage media of claim 20 further wherein he at least one second gateway comprises a combination of at least one second gateway located inside of a service region and at least one second gateway located outside of the service region.

25. The storage media of claim 19 further comprising program instructions that cause traffic from the active channels of the degraded feeder link to be redirected to the diversity channels of the feeder link or feeder links that the traffic is redirected to, by the recoverable network routing protocol.

26. The storage media of claim 19 wherein the recoverable network routing protocol comprises an internet system.

27. The storage media of claim 19 wherein the recoverable network routing protocol comprises an intranet system.