Satellite-band spectrum utilization for reduced or minimum interference

• US 8,145,126 B2
• Filed: 05/10/2011
• Issued: 03/27/2012
• Est. Priority Date: 08/11/2004
• Status: Active Grant

• Current Assignee: ATC Technology Corporation (FedEx Corporation)
• Original Assignee: ATC Technology Corporation (FedEx Corporation)
• Inventors: Dutta, Santanu, Karabinis, Peter D.
• Primary Examiner(s): Alam, Fayyaz
• Application Number:
  US13/104,117
• Publication Number:
  US 20110212694A1
• Time in Patent Office: 322 Days
• Field of Search: 455 111- 131
• US Class Current: 455/11.1
• CPC Class Codes: H04B 7/18513 Transmission in a satellite or space-based system
• CPC Class Codes: H04B 7/18563 Arrangements for interconnecting multiple systems data switching networks H04L12/00

Abstract

A first and/or a second communications system may provide communications service over a geographic area. A method of operating the first and/or the second communications systems may include generating a measure of aggregate interference reaching a satellite of the second communications system substantially from devices of the first communications system. The measure of aggregate interference reaching the satellite of the second communications system may be transmitted to an element of the first communications system.

Claims

1. A method of operating first and second radioterminal communications systems including respective first and second elements providing communications service to a plurality of radioterminals over a geographic area, the method comprising:

providing communications between a radioterminal and the second element of the second radioterminal communications system;

generating a measure of interference from the first radioterminal communications system including the first element to the radioterminal of the second radioterminal communications system including the second element, wherein the first radioterminal communications system is a source of the interference to the radioterminal of the second radioterminal communications system;

transmitting the measure of interference to an element of the second radioterminal communications system via the second element; and

transmitting the measure of interference from the second radioterminal communications system including the second element to the first radioterminal communications system including the first element.

2. A method according to claim 1 wherein the measure of interference comprises a bit error rate.

3. A method according to claim 1 further comprising:

increasing a power of transmission from an element of the second radioterminal communications system to the radioterminal when the measure of interference exceeds a threshold.

4. A method according to claim 1 further comprising:

changing a frequency for communications between the radioterminal and an element of the second radioterminal communications system when the measure of interference exceeds a threshold.

5. A method according to claim 1 wherein the first and second radioterminal communications systems are operated by different entities.

6. A method according to claim 1 wherein the first and second radioterminal communications systems are operated by a same entity.

7. A method according to claim 1 wherein the second radioterminal communications system comprises at least one element and wherein the radioterminal of the second radioterminal communications system is configured to communicate with the at least one element of the second radioterminal communications system.

8. A method according to claim 1 wherein the first radioterminal communications system comprises at least one element and/or at least one terrestrial component, wherein the at least one element and/or the at least one terrestrial component of the first radioterminal communications system is/are configured to communicate with at least one radioterminal.

9. A method according to claim 1 wherein the first and second radioterminal communications systems are both configured for communication using L band and/or S band frequencies.

10. A method according to claim 1 wherein transmitting the measure of interference from the second radioterminal communications system including the second element to the first radioterminal communications system including the first element comprises transmitting the measure of interference via ground based infrastructure.

11. A method according to claim 10 wherein the measure of interference from the first radioterminal communications system to the radioterminal of the second radioterminal communications system comprises a measure of interference from the first element of the first radioterminal communications system and/or from a terrestrial infrastructure component of the first radioterminal communications system.

12. A method according to claim 10 wherein transmitting the measure of interference comprises transmitting the measure of interference via an element gateway of the second radioterminal communications system, via the ground based infrastructure, and via an element gateway of the first radioterminal communications system.

13. A method according to claim 1 wherein the radioterminal comprises a mobile radioterminal.

14. A method according to claim 1 wherein transmitting the measure of interference to an element of the second radioterminal communications system via the second element comprises transmitting the measure of interference to a ground based element of the second radioterminal communications system.

15. A method of operating first and second radioterminal communications systems including respective first and second elements providing communications service to a plurality of radioterminals over a geographic area, the method comprising:

providing communications between a radioterminal and the second element of the second radioterminal communications system;

generating a measure of interference from the first radioterminal communications system including the first element to the radioterminal of the second radioterminal communications system including the second element, wherein the first radioterminal communications system is a source of the interference to the radioterminal of the second radioterminal communications system;

transmitting the measure of interference to a ground based element of the second radioterminal communications system via the second element; and

transmitting the measure of interference from the second radioterminal communications system including the second element to the first radioterminal communications system including the first element.

16. A method according to claim 15 further comprising:

increasing a power of transmission from an element of the second radioterminal communications system to the radioterminal when the measure of interference exceeds a threshold.

17. A method according to claim 15 further comprising:

changing a frequency for communications between the radioterminal and an element of the second radioterminal communications system when the measure of interference exceeds a threshold.

18. A method according to claim 15 wherein the first and second radioterminal communications systems are operated by different entities.

19. A method according to claim 15 wherein the first and second radioterminal communications systems are operated by a same entity.

20. A method according to claim 15 wherein the second radioterminal communications system comprises at least one element and wherein the radioterminal of the second radioterminal communications system is configured to communicate with the at least one element of the second radioterminal communications system.

21. A method according to claim 15 wherein the first radioterminal communications system comprises at least one element and/or at least one terrestrial component, wherein the at least one element and/or the at least one terrestrial component of the first radioterminal communications system is/are configured to communicate with at least one radioterminal.

22. A method according to claim 15 wherein the first and second radioterminal communications systems are both configured for communication using L band and/or S band frequencies.

23. A method according to claim 15 wherein the measure of interference comprises a bit error rate.

24. A method according to claim 15 wherein the first element comprises a first satellite of the first radioterminal communications system, wherein the second element comprises a second satellite of the second radioterminal communications system, wherein transmitting the measure of interference from the second radioterminal communications system including the second element to the first radioterminal communications system including the first element comprises transmitting the measure of interference via ground based infrastructure.

25. A method according to claim 24 wherein the measure of interference from the first radioterminal communications system to the radioterminal of the second radioterminal communications system comprises a measure of interference from the first satellite of the first radioterminal communications system and/or from a terrestrial infrastructure component of the first radioterminal communications system.

26. A method according to claim 24 wherein transmitting the measure of interference comprises transmitting the measure of interference via a terrestrial gateway of the second radioterminal communications system for the second satellite, via the ground based infrastructure, and via a terrestrial gateway of the first radioterminal communications system for the first satellite.

27. A method according to claim 15 wherein the radioterminal comprises a mobile radioterminal.

28. A method according to claim 15 wherein generating the measure of interference to the radioterminal of the second radioterminal communications system comprises generating the measure of interference based on signals received at the radioterminal.