Satellite system utilizing a plurality of air interface standards and method employing same

• US 6,052,560 A
• Filed: 10/15/1997
• Issued: 04/18/2000
• Est. Priority Date: 10/15/1997
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Karabinis, Peter D.
• Primary Examiner(s): LOOMIS, PAUL A
• Application Number:
  US08/951,133
• Time in Patent Office: 916 Days
• Field of Search: 455/12.1, 455/426, 455/428, 455/427, 455/552, 455/553
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/18563 Arrangements for interconnecting multiple systems data switching networks H04L12/00

Abstract

A satellite system and method for facilitating communications of mobile terminal users operating in a satellite-based communications mode. In particular, the present invention is directed to a satellite system employing at least one satellite air interface standard modeled after at least one terrestrially-based, cellular air interface standard, forming a satellite/cellular mode pair such as ACeS/GSM. One or more of such pairs are utilized for communications within the satellite system.

Claims

1. In a satellite communications system having at least one satellite, at least one earth station, and a multiplicity of mobile terminals, said mobile terminals being at least dual mode, a first of said modes being a terrestrially-based mode and the second of said modes being a satellite-based mode, circuitry within said satellite communication system for supporting communication between said satellite, said earth station and said mobile terminals, said circuitry comprising:

a first air interface between a first plurality of said mobile terminals and at least one first cellular base station, said first air interface operable within said first plurality of mobile terminals when said first plurality of mobile terminals operate in said terrestrially-based mode;

a second air interface between said first plurality of mobile terminals and said at least one satellite, said second air interface operable within said first plurality of mobile terminals when said first plurality of mobile terminals operate in said satellite-based mode, said second air interface having a correspondence with said first air interface, said first and second air interfaces constituting a first communication class for said first plurality of said mobile terminals;

a third air interface between a second plurality of said mobile terminals and at least one second cellular base station, said third air interface operable within said second plurality of mobile terminals when said second plurality of mobile terminals operate in said terrestrially-based mode; and

a fourth air interface between said second plurality of mobile terminals and said at least one satellite, said fourth interface operable within said second plurality of mobile terminals when said second plurality of mobile terminals operate in said satellite-based mode, said fourth air interface having a correspondence with said third air interface, said third and fourth air interfaces constituting a second class for said second plurality of mobile terminals.

2. The satellite communication circuitry according to claim 1, wherein said first air interface is according to a terrestrial GSM protocol, said first plurality of mobile terminals being operable in a terrestrial GSM mode.

3. The satellite communication circuitry according to claim 2, wherein said second air interface is according to a satellite ACeS protocol, said first plurality of mobile terminals being operable in an ACeS satellite mode.

4. The satellite communications circuitry according to claim 1, wherein said first air interface is according to a terrestrial CDMA protocol, said first plurality of mobile terminals being operable in a terrestrial CDMA mode.

5. The satellite communications circuitry according to claim 1, wherein said first air interface is according to a terrestrial TDMA protocol, said first plurality of mobile terminals being operable in a terrestrial TDMA mode.

6. The satellite communication circuitry according to claim 1, wherein said first communication class comprises GSM and ACeS, wherein GSM is said first air interface and ACeS is said second air interface.

7. The satellite communication circuitry according to claim 1, wherein said second air interface of said first communication class is stored within a plurality of channel units of a channel unit bank, a channel unit controller governing communications between said bank and said first plurality of mobile terminals within said first communication class.

8. The satellite communications circuitry according to claim 4, wherein said second air interface is substantially according to a satellite CDMA protocol, said first plurality of mobile terminals being operable in a satellite CDMA mode.

9. The satellite communications circuitry according to claim 5, wherein said second air interface is substantially according to a terrestrial DMA protocol, said first plurality of mobile terminals being operable in a satellite TDMA mode.

10. The satellite communications circuitry according to claim 2, wherein said third air interface is according to a terrestrial CDMA protocol, said first plurality of mobile terminals being dually operable in said terrestrial GSM mode and a terrestrial CDMA mode.

11. The satellite communications circuitry according to claim 2, wherein said third air interface is according to a terrestrial TDMA protocol, said first plurality of mobile terminals being dually operable in said terrestrial GSM mode and a terrestrial TDMA mode.

12. The satellite communications circuitry according to claim 6, wherein said second communication class comprises a CDMA class, wherein said third air interface is according to a terrestrial CDMA protocol, and said fourth air interface is substantially according to a satellite CDMA protocol, said first plurality of mobile terminals being operable in a satellite GSM mode and a satellite CDMA mode.

13. The satellite communications circuitry according to claim 1, wherein in said first communication class said first air interface is according to a terrestrial CDMA protocol and said second air interface is substantially according to a satellite CDMA protocol, and wherein in said second communication class said third air interface is according to a terrestrial TDMA protocol and said fourth air interface is substantially according to a satellite TDMA protocol, said first plurality of mobile terminals being dually operable in a satellite CDMA mode and a satellite TDMA mode.

14. The satellite communications circuitry according to claim 6, wherein said second communication class comprises a TDMA class wherein said third air interface is according to a terrestrial TDMA protocol, and said fourth air interface is substantially according to a satellite TDMA protocol, said first plurality of mobile terminals being operable in a satellite GSM mode and a satellite TDMA mode.

15. The satellite communications circuitry according to claim 2, wherein said third air interface is according to a terrestrial CDMA protocol, said second plurality of mobile terminals being operable in a terrestrial CDMA mode.

16. The satellite communications circuitry according to claim 2, wherein said third air interface is according to a terrestrial TDMA protocol, said second plurality of mobile terminals being operable in a terrestrial TDMA mode.

17. The satellite communications circuitry according to claim 4, wherein said second air interface is a satellite CDMA air interface substantially according to said terrestrial CDMA protocol, said first plurality of mobile terminals being operable in a satellite CDMA mode.

18. The satellite communications circuitry according to claim 5, wherein said second air interface is a satellite TDMA air interface substantially according to a terrestrial TDMA protocol, said first plurality of mobile terminals being operable in a satellite TDMA mode.

19. The satellite communications circuitry according to claim 6, wherein said third air interface is according to a terrestrial CDMA protocol, and said fourth air interface is a satellite CDMA air interface substantially according to said terrestrial CDMA protocol.

20. The satellite communications circuitry according to claim 6, wherein said second communication class comprises a TDMA class, wherein said third air interface is according to a terrestrial TDMA protocol, and said fourth air interface is a satellite TDMA air interface substantially according to said terrestrial TDMA protocol.

21. The satellite communications circuitry according to claim 7, wherein said fourth air interface of said second communication class is stored within said plurality of channel units of said channel unit bank, said channel unit controller governing communications between said bank and said second plurality of mobile terminals within said second communication class.

22. The satellite communications circuitry according to claim 7, wherein said fourth air interface of said second communication class is stored within a plurality of other channel units of a second channel unit bank, a second channel unit controller governing communications between said second channel unit bank and said second plurality of mobile terminals within said second communication class.

23. The satellite communications circuitry according to claim 1, wherein in said first communication class said first air interface is according to a terrestrial CDMA protocol and said second air interface is a satellite air interface substantially according to said terrestrial CDMA protocol, and wherein in said second communication class said third air interface is according to a terrestrial TDMA protocol and said fourth air interface is a satellite air interface substantially according to said terrestrial TDMA protocol.

24. A satellite transponder in a satellite communications system, said system including at least one earth station and a multiplicity of mobile terminals, a plurality of said mobile terminals being at least dual mode, a first of said modes being a terrestrially-based mode and the second of said modes being a satellite-based mode, circuitry within said satellite transponder for supporting communication between said satellite transponder, said earth station and said mobile terminals, said circuitry comprising:

a first satellite air interface between a first plurality of said mobile terminals and said satellite transponder, said first satellite air interface operable within said first plurality of mobile terminals when operating in said satellite-based mode, said first satellite air interface having a correspondence with a first terrestrial air interface utilized by said first plurality of mobile terminals when operating in said terrestrially-based mode, said first satellite and first terrestrial air interfaces constituting a first communication class of said first plurality of said mobile terminals; and

a second satellite air interface between a second plurality of mobile terminals and said satellite transponder, said second satellite air interface operable within said second plurality of mobile terminals when operating in said satellite-based mode, said second satellite air interface having a correspondence with a second terrestrial air interface utilized by said second plurality of mobile terminals when operating in said terrestrially-based mode, said second satellite and second terrestrial air interfaces constituting a second communication class of said second plurality of said mobile terminals.

25. The satellite transponder according to claim 24, wherein said first terrestrial air interface is according to a terrestrial GSM protocol, said first plurality of mobile terminals being operable in a terrestrial GSM mode.

26. The satellite transponder according to claim 24, wherein said first satellite air interface is according to a satellite ACeS protocol, said first plurality of mobile terminals also being operable in a satellite ACeS mode.

27. The satellite transponder according to claim 24, wherein said first communication class comprises GSM and ACeS, wherein ACeS is said first satellite air interface and GSM is said first terrestrial air interface.

28. The satellite transponder according to claim 24, wherein said first satellite air interface is stored within a plurality of channel units of a channel unit bank, a channel unit controller governing communications between said bank and said first plurality of mobile terminals within said first communication class.

29. The satellite transponder according to claim 24, wherein in said first communication class said first terrestrial air interface is according to a terrestrial CDMA protocol and said first satellite air interface is substantially according to a satellite CDMA protocol, and wherein in said second communication class said second terrestrial air interface is according to a terrestrial TDMA protocol and said second satellite air interface is substantially according to a satellite TDMA protocol, said first plurality of mobile terminals being dually operable through said satellite transponder in a satellite CDMA mode and a satellite TDMA mode.

30. The satellite transponder according to claim 24, wherein said first satellite air interface is according to a terrestrial GSM protocol, said first plurality of mobile terminals being operable in a terrestrial GSM mode and a satellite GSM mode.

31. The satellite transponder according to claim 25, wherein said second satellite air interface is a satellite air interface substantially according to a terrestrial CDMA protocol, said second plurality of mobile terminals being operable in a terrestrial CDMA mode and a satellite CDMA mode.

32. The satellite transponder according to claim 25, wherein said second satellite air interface is according to a satellite CDMA protocol, said first plurality of mobile terminals being dually operable through said satellite transponder in a satellite GSM mode and a satellite CDMA mode.

33. The satellite transponder according to claim 25, wherein said second satellite air interface is according to a satellite TDMA protocol, said first plurality of mobile terminals being dually operable through said satellite transponder in a satellite GSM mode and a satellite TDMA mode.

34. The satellite transponder according to claim 27, wherein said second communication class comprises a CDMA class, wherein said second terrestrial air interface is according to a terrestrial CDMA protocol, and said second satellite air interface is substantially according to a satellite CDMA protocol, said first plurality of mobile terminals being operable through said satellite transponder in a satellite GSM mode and a satellite CDMA mode.

35. The satellite transponder according to claim 27 wherein said second communication class comprises a TDMA class, wherein said second terrestrial air interface is according to a terrestrial TDMA protocol, and said second satellite air interface is substantially according to a satellite TDMA protocol, said first plurality of mobile terminals being operable through said satellite transponder in a satellite GSM mode and a satellite TDMA mode.

36. The satellite transponder according to claim 28, wherein said second satellite air interface is stored within said plurality of channel units of said channel unit bank.

37. The satellite transponder according to claim 25, wherein said second satellite air interface is a satellite air interface substantially according to a terrestrial TDMA protocol, said second plurality of mobile terminals being operable in a terrestrial TDMA mode and a satellite TDMA mode.

38. The satellite transponder according to claim 27, wherein said second communication class comprises a CDMA class, wherein said second terrestrial air interface is according to a terrestrial CDMA protocol, and said second satellite air interface is a satellite air interface substantially according to said terrestrial CDMA protocol, said first plurality of mobile terminals being operable through said satellite transponder in a satellite GSM mode and said second plurality of mobile terminals being operable through said satellite transponder in a satellite CDMA mode.

39. The satellite transponder according to claim 27, wherein said second communication class comprises a TDMA class, wherein said second terrestrial air interface is according to a terrestrial TDMA protocol, and said second satellite air interface is substantially according to said terrestrial TDMA protocol, said first plurality of mobile terminals being operable through said satellite transponder in a satellite GSM mode and said second plurality of mobile terminals being operable through said satellite transponder in a satellite TDMA mode.

40. A satellite transponder according to claim 24, wherein in said first communication class said first terrestrial air interface is according to a terrestrial CDMA protocol and said first satellite air interface is a satellite air interface substantially according to said terrestrial CDMA protocol, and wherein in said second communication class said second terrestrial air interface is according to a terrestrial TDMA protocol and said second satellite air interface is a satellite air interface substantially according to a satellite TDMA protocol, said first plurality of mobile terminals being operable through said satellite transponder in a satellite CDMA mode and said second plurality of mobile terminals being operable through said satellite transponder in a satellite TDMA mode.

41. A method for supporting calls for a plurality of mobile terminals within a satellite communications system having at least one satellite and at least one earth station, a first and a second of said mobile terminals operating in respective dual modes, a first of said modes being a terrestrially-based mode and the second of said modes being a satellite-based mode, said method comprising the steps of:

transmitting first signals from said first mobile terminal to said satellite in a first satellite-based mode, said first satellite-based mode having a correspondence with a first terrestrially-based mode operable within said first mobile terminal, said first terrestrially-based and first satellite-based modes of said first mobile terminal constituting a first communication class; and

transmitting second signals from said second mobile terminal to said satellite in a second satellite-based mode, said second satellite-based mode having a correspondence with a second terrestrially-based mode operable within said second mobile terminal, said second terrestrially-based and second satellite-based modes of said second mobile terminal constituting a second communication class.

42. The method according to claim 41, wherein said first satellite-based mode of said first mobile terminal is according to a satellite ACeS protocol, said first mobile terminal being operable in a satellite ACeS mode.

43. The method according to claim 41, wherein said first terrestrially-based mode of said first mobile terminal is according to a terrestrial GSM protocol, said first mobile terminal being operable in a terrestrial GSM mode.

44. The method according to claim 41, wherein said signal transmission from said first mobile terminal to said satellite is in said second mode, said first and second mobile terminals being operable in at least two second modes.

45. The method according to claim 41, wherein said first terrestrially-based mode of said first mobile terminal is according to a terrestrial CDMA protocol, and wherein said second terrestrially-based mode of said second mobile terminal is according to a terrestrial TDMA protocol.

46. The method according to claim 41, wherein said first satellite-based mode of said first mobile terminal is according to a satellite CDMA protocol, and wherein said second satellite-based mode of said second mobile terminal is according to a satellite TDMA protocol.

47. The method according to claim 42, wherein said second satellite-based mode of said second mobile terminal is according to a satellite TDMA protocol.

48. The method according to claim 42, wherein said second satellite-based mode of said second mobile terminal is according to a satellite CDMA protocol.

49. The method according to claim 43, wherein said second terrestrially-based mode of said second mobile terminal is according to a terrestrial CDMA protocol.

50. The method according to claim 43, wherein said second terrestrially-based mode of said second mobile terminal is according to a terrestrial TDMA protocol.

51. The method according to claim 41, wherein said first mobile terminal is operable in a satellite GSM mode and a satellite CDMA mode.

52. The method according to claim 41, wherein said first mobile terminal is operable in a satellite CDMA mode and a satellite TDMA mode.

53. The method according to claim 44, wherein said second modes are selected from the group consisting of satellite GSM, satellite CDMA and satellite TDMA modes.

54. The method according to claim 41, wherein said first mobile terminal is operable in a terrestrial GSM mode and a satellite GSM mode.

55. The method according to claim 54, wherein said satellite GSM mode of said first mobile terminal is according to an ACeS protocol.

56. The method according to claim 54, wherein said second mobile terminal is operable in a terrestrial GSM mode and a satellite GSM mode.

57. The method according to claim 41, wherein said terrestrially-based air interface for said first mobile terminal is according to a terrestrial CDMA protocol, said first mobile terminal being operable in a terrestrial and a satellite CDMA mode.

58. The method according to claim 41, wherein said terrestrially-based air interface for said first mobile terminal is according to a terrestrial TDMA protocol, said first mobile terminal being operable in a terrestrial and a satellite TDMA mode.

59. A method for supporting calls between a plurality of mobile terminals within a satellite communications system having at least one satellite and at least one earth station, a first and a second of said mobile terminals operating in a dual mode, a first of said modes being a terrestrially-based mode and the second of said modes being a satellite-based mode, said method comprising the following steps:

transmitting signals from said first mobile terminal to said satellite, said signal transmission being in said second mode, said satellite including a transceiver therein, said transceiver employing a satellite air interface for receiving said signal transmission; and

transmitting said signal transmission, received by said satellite from said first mobile terminal, from said satellite to said second mobile terminal in said second mode, said satellite air interface having a correspondence with a terrestrially-based air interface of said second mobile terminal, said terrestrially-based air interface being used by said second mobile terminal when operating in said terrestrially-based mode, wherein said first mobile terminal is operable in a satellite GSM mode and said second mobile terminal is operable in a satellite CDMA mode.

60. A method for supporting calls between a plurality of mobile terminals within a satellite communications system having at least one satellite and at least one earth station, a first and a second of said mobile terminals operating in a dual mode, a first of said modes being a terrestrially-based mode and the second of said modes being a satellite-based mode, said method comprising the following steps:

transmitting signals from said first mobile terminal to said satellite, said signal transmission being in said second mode, said satellite including a transceiver therein, said transceiver employing a satellite air interface for receiving said signal transmission; and

transmitting said signal transmission, received by said satellite from said first mobile terminal, from said satellite to said second mobile terminal in said second mode, said satellite air interface having a correspondence with a terrestrially-based air interface of said second mobile terminal, said terrestrially-based air interface being used by said second mobile terminal when operating in said terrestrially-based mode, wherein said first mobile terminal is operable in a satellite CDMA mode and said second mobile terminal is operable in a satellite TDMA mode.

61. A method for supporting calls between a plurality of mobile terminals within a satellite communications system having at least one satellite and at least one earth station, a first and a second of said mobile terminals operating in a dual mode, a first of said modes being a terrestrially-based mode and the second of said modes being a satellite-based mode, said method comprising the following steps:

transmitting signals from said first mobile terminal to said satellite, said signal transmission being in said second mode, said satellite including a transceiver therein, said transceiver employing a satellite air interface for receiving said signal transmission; and

transmitting said signal transmission, received by said satellite from said first mobile terminal, from said satellite to said second mobile terminal in said second mode, said satellite air interface having a correspondence with a terrestrially-based air interface of said second mobile terminal, said terrestrially-based air interface being used by said second mobile terminal when operating in said terrestrially-based mode, wherein said signal transmission from said first mobile terminal to said satellite is in said second mode, at least one of said first and second mobile terminals being operable in at least two second modes.

62. The method according to claim 61, wherein said second modes are selected from the group consisting of satellite GSM, satellite CDMA and satellite TDMA modes.