PREDICTION OF UPLINK INTERFERENCE POTENTIAL GENERATED BY AN ANCILLARY TERRESTRIAL NETWORK AND/OR RADIOTERMINALS

• US 20100041394A1
• Filed: 09/30/2009
• Published: 02/18/2010
• Est. Priority Date: 12/16/2004
• Status: Active Grant

• Current Assignee: ATC Technology Corporation (FedEx Corporation)
• Original Assignee: ATC Technology Corporation (FedEx Corporation)
• Inventors: Karabinis, Peter D.
• Granted Patent: US 8,073,394 B2
• Time in Patent Office: Days
• US Class Current: 455/427
• CPC Class Codes: H04B 7/18513 Transmission in a satellite or space-based system
• CPC Class Codes: H04B 7/18523 Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service arrangements specially adapted for satellite broadcast receiving H04H40/90; picture transmission via satellite H04N1/00103; television transmission via satellite H04N7/20
• CPC Class Codes: H04B 7/18563 Arrangements for interconnecting multiple systems data switching networks H04L12/00
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04H 2201/70 characterised in that receivers can be addressed
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
• CPC Class Codes: H04H 60/51 of receiving stations
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Methods are provided for predicting uplink interference potential to a mobile satellite system (MSS) generated by ancillary terrestrial components (ATCs) of an ancillary terrestrial network (ATN) and/or ATC radioterminals that are configured to terrestrially use/reuse satellite frequencies that are used and/or authorized for use by a MSS. The methods include measuring power transmitted by and/or received at one or more radioterminals communicating with one or more terrestrial networks and/or transmitted by and/or received at the one or more terrestrial networks communicating with the one or more radioterminals using terrestrial frequencies that are at least partially outside a range of the satellite frequencies. Uplink interference potential to the MSS generated by terrestrial use/reuse of satellite frequencies by the ATN and/or the ATC radioterminals is predicted responsive to the measured power. Related ancillary terrestrial networks are also described.

Claims

1. A radioterminal comprising:

a transceiver that is configured to communicate with at least one base station using frequencies of a satellite band; and

a controller that is configured to regulate communications between the radioterminal and the at least one base station in response to a level of interference potential that the communications between the radioterminal and the at least one base station causes to a satellite system,

wherein the level of interference potential that the communications between the radioterminal and the at least one base station causes to the satellite system is based upon at least one measurement of a transmitted and/or received power level that is associated with a device that is communicating with at least one base station using at least some frequencies that are not frequencies of the satellite band.

2. The radioterminal of claim 1, wherein the transceiver communicates with the at least one base station using a vocoder that is substantially the same as and/or is based upon a vocoder that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

3. The radioterminal of claim 2, wherein the controller is configured to select a vocoder from a plurality of different vocoders responsive to the level of interference potential.

4. The radioterminal of claim 3, wherein the plurality of different vocoders are substantially the same as and/or are based upon a respective plurality of vocoders that are used by the terrestrial wireless system.

5. The radioterminal of claim 1, wherein the controller is configured to limit a transmission power of the radioterminal responsive to the level of interference potential.

6. The radioterminal of claim 1, wherein the controller is configured to select a range of satellite frequencies to be used by the transceiver responsive to the level of interference potential.

7. The radioterminal of claim 6, wherein the controller is configured to increase the transmission power in response to the level of interference potential being less than a threshold value, and is configured to decrease the transmission power in response to the level of interference potential being greater than a threshold value.

8. The radioterminal of claim 1, wherein the transceiver communicates with the at least one base station using a data mode that is substantially the same as and/or is based upon a data mode that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

9. The radioterminal of claim 8, wherein the controller is configured to select a data mode from a plurality of different data modes responsive to the level of interference potential.

10. The radioterminal of claim 9, wherein the plurality of different data modes are substantially the same as and/or are based upon a respective plurality of data modes that are used by the terrestrial wireless system.

11. The radioterminal of claim 1, wherein the transceiver communicates with the at least one base station using an air interface protocol that is substantially the same as and/or is based upon an air interface protocol that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

12. The radioterminal of claim 11, wherein the controller is configured to select an air interface protocol from a plurality of different an air interface protocols responsive to the level of interference potential.

13. The radioterminal of claim 12. wherein the plurality of different an air interface protocols are substantially the same as and/or are based upon a respective plurality of an air interface protocols that are used by the terrestrial wireless system.

14. A system comprising:

at least one base station that is configured to communicate with at least one radioterminal using frequencies of a satellite band; and

an interference controller that is configured to regulate communications between the at least one base station and the at least one radioterminal in response to a level of interference potential that the communications between the at least one base station and the at least one radioterminal causes to a satellite system;

wherein the level of interference potential that the communications between the at least one base station and the at least one radioterminal causes to the satellite system is based upon at least one measurement of a transmitted and/or received power level that is associated with a device that is communicating with at least one base station using at least some frequencies that are not frequencies of the satellite band.

15. The system of claim 14, wherein:

the interference controller is configured to limit a number of radioterminals that are allowed to simultaneously communicate with the at least one base station to a maximum number of radioterminals in response to the level of interference potential.

16. The system of claim 14, wherein:

the interference controller is configured to initiate a hand off of a radioterminal from a base station to a satellite in response to the level of interference potential.

17. The system of claim 14, wherein:

the interference controller is configured to initiate a hand off of a radioterminal from a satellite to a base station in response to the level of interference potential.

18. The system of claim 14, wherein:

the at least one base station communicates with the at least one radioterminal using a vocoder that is substantially the same as and/or is based upon a vocoder that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

19. The system of claim 18, wherein:

the interference controller is configured to select a vocoder from a plurality of different vocoders responsive to the level of interference potential.

20. The system of claim 19, wherein:

the plurality of different vocoders are substantially the same as and/or are based upon a respective plurality of vocoders that are used by the terrestrial wireless system.

21. The system of claim 20, wherein the selected vocoder is used by the at least one base station and/or by the at least one radioterminal to encode voice for transmission.

22. The system of claim 14, wherein:

the interference controller is configured to limit a power level transmitted by the at least one base station and/or with the at least one radioterminal responsive to the level of interference potential.

23. The system of claim 14, wherein:

the interference controller is configured to control a range of frequencies that are used by the at least one base station and/or by the at least one radioterminal responsive to the level of interference potential.

24. The system of claim 14, wherein:

the interference controller is configured to select a first vocoder and/or a first data mode in response to the level of interference potential being less than a threshold value, and is configured to select a second vocoder and/or a second data mode in response to the level of interference potential being greater than the threshold value.

25. The system of claim 14, wherein:

the at least one base station communicates with the at least one radioterminal using a data mode that is substantially the same as and/or is based upon a data mode that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

26. The system of claim 25, wherein:

the interference controller is configured to select a data mode, which is to be used by the at least one base station and/or by the at least one radioterminal, from a plurality of different data modes responsive to the level of interference potential.

27. The system of claim 26, wherein:

the plurality of different data modes are substantially the same as and/or are based upon a respective plurality of data modes that are used by the terrestrial wireless system.

28. The system of claim 14, wherein the at least one base station communicates with the at least one radioterminal using an air interface protocol that is substantially the same as and/or is based upon an air interface protocol that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

29. The system of claim 28, wherein:

the interference controller is configured to select the air interface protocol from among a plurality of different air interface protocols responsive to the level of interference potential.

30. The system of claim 14, wherein the at least one base station is substantially co-located with and/or is using a tower of at least one base station of at least one terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

31. A wireless communications method comprising:

generating a level of interference potential in response to at least one measurement of a transmitted and/or received power level that is associated with a device that is communicating with at least one base station using at least some frequencies that are not frequencies of a satellite band;

transmitting information using frequencies of the satellite band; and

regulating the transmitting responsive to a level of interference potential that the transmitting causes to a satellite system.

32. The method of claim 31, wherein transmitting comprises using a vocoder that is substantially the same as and/or is based upon a vocoder that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

33. The method of claim 32, wherein regulating comprises selecting the vocoder from a plurality of different vocoders responsive to the level of interference potential.

34. The method of claim 33, wherein the plurality of different vocoders are substantially the same as and/or are based upon a respective plurality of vocoders that are used by the terrestrial wireless system.

35. The method of claim 31, wherein regulating comprises limiting a transmission power responsive to the level of interference potential.

36. The method of claim 35, wherein regulating further comprises increasing the transmission power in response to the level of interference potential being less than a threshold value, and decreasing the transmission power in response to the level of interference potential being greater than a threshold value.

37. The method of claim 31, wherein regulating comprises selecting a range of satellite frequencies that are used for the transmitting responsive to the level of interference potential.

38. The method of claim 31, wherein transmitting information comprises using a data mode that is substantially the same as and/or is based upon a data mode that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

39. The method of claim 38. wherein regulating comprises selecting the data mode from a plurality of different data modes responsive to the level of interference potential.

40. The method of claim 39, wherein the plurality of different data modes are substantially the same as and/or are based upon a respective plurality of data modes that are used by the terrestrial wireless system.

41. The method of claim 31, wherein transmitting information comprises using an air interface protocol that is substantially the same as and/or is based upon an air interface protocol that is used by a terrestrial wireless system that communicates with radioterminals using frequencies that are substantially different from the frequencies of the satellite band.

42. The method of claim 41, wherein regulating comprises selecting the air interface protocol from a plurality of different air interface protocols responsive to the level of interference potential.

43. The method of claim 42, wherein the plurality of different air interface protocols are substantially the same as and/or are based upon a respective plurality of air interface protocols that are used by the terrestrial wireless system.