System and method for wireless transmission of signals using multiple channels assigned in response to signal type

• US 20040196798A1
• Filed: 04/01/2003
• Published: 10/07/2004
• Est. Priority Date: 04/01/2003
• Status: Abandoned Application

• Current Assignee: General Dynamics C4 Systems Incorporated (General Dynamics Corporation)
• Original Assignee: General Dynamics C4 Systems Incorporated (General Dynamics Corporation)
• Inventors: Abousleman, Glen P.
• Application Number:
  US10/404,791
• Publication Number:
  US 20040196798A1
• Time in Patent Office: Days
• US Class Current: 370/316
• CPC Class Codes: H04B 7/185 Space-based or airborne stations; Stations for satellite systemsH04B7/204 takes precedence
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 84/06 Airborne or Satellite Networks space-based or airborne stations H04B7/185

Abstract

A method of utilizing low-data-rate wireless channels (46) in a satellite-based wireless communication network (20) detects a transmit signal (64) and determines a data type (120, 122, 124) for the transmit signal (64). A quantity of the wireless channels (46) are assigned for transmission of the transmit signal (64) in response to the data type (120, 122, 124). An inverse multiplexing system (50) selectively splits the transmit signal (64) into multiple subsectional signals for transmission over separate wireless channels (46) to facilitate the transmission of large data files and real-time video imagery over the low-data-rate wireless channels (46).

Claims

1. A method for utilizing wireless channels in a wireless communication system, said wireless communication system including a first communication station and a second communication station, and said method comprising:

detecting a transmit signal at said first communication station;

determining a data type of said transmit signal;

assigning a quantity of said wireless channels for transmission of said transmit signal in response to said data type; and

enabling transmission of said transmit signal toward said second communication station over said quantity of said wireless channels.

2. A method as claimed in claim 1 wherein said enabling operation comprises establishing a circuit-switched connection using said quantity of said wireless channels between said first and second communication stations.

3. A method as claimed in claim 1 wherein said wireless communication system is a satellite-based communication network that includes earth-orbiting satellites, and said method further comprises transmitting said transmit signal over said quantity of said wireless channels between said first communication station and one of said earth-orbiting satellites.

4. A method as claimed in claim 1 wherein said wireless communication system is a satellite-based communication network and said wireless channels are wireless voice channels managed by said satellite-based communication network.

5. A method as claimed in claim 1 wherein:

said determining operation comprises identifying said data type as being a time-critical class having a data rate corresponding to a predetermined data rate of one of said wireless channels; and

said assigning operation assigns said quantity as being one of said wireless channels.

6. A method as claimed in claim 5 wherein said transmit signal is a voice signal.

7. A method as claimed in claim 1 wherein:

said determining operation comprises identifying said data type as being a time-noncritical class; and

said assigning operation comprises;

ascertaining an available number of said wireless channels; and

allocating said available number of said channels to be said quantity of said wireless channels, said quantity of said wireless channels being greater than one.

8. A method as claimed in claim 7 further comprising transmitting said transmit signal in an acknowledged mode.

9. A method as claimed in claim 8 wherein said wireless communication system is an earth-orbiting satellite-based communication network, and said acknowledged mode is a communication service provided by said network.

10. A method as claimed in claim 1 wherein:

said determining operation comprises identifying said data type as being a time-critical class having a data rate that exceeds a predetermined data rate of each of said wireless channels; and

said assigning operation comprises;

ascertaining an available number of said wireless channels; and

allocating said available number of said channels to be said quantity of said wireless channels, said quantity of channels being greater than one.

11. A method as claimed in claim 10 wherein said transmit signal is a video signal.

12. A method as claimed in claim 10 further comprising transmitting said transmit signal in an unacknowledged mode.

13. A method as claimed in claim 12 wherein said wireless communication system is an earth-orbiting satellite-based communication network, and said unacknowledged mode is a communication service provided by said network.

14. A method as claimed in claim 1 wherein when said quantity of said wireless channels is more than one, said enabling operation comprises:

splitting said transmit signal into a number of subsectional signals, said number corresponding to said quantity of said wireless channels;

allocating one each of said number of said subsectional signals for transmission over one each of said quantity of said wireless channels; and

transmitting said number of said subsectional signals over said quantity of said wireless channels.

15. A method as claimed in claim 14 further comprising:

receiving said subsectional signals at said second communication station; and

combining said subsectional signals to form said transmit signal.

16. A method as claimed in claim 14 wherein said transmit signal is a first transmit signal, and said method further comprises:

detecting a second transmit signal at said first communication station;

determining said data type of said second transmit signal as being a time critical class having a data rate corresponding to a predetermined data rate of one of said wireless channels; and

reassigning one of said quantity of said wireless channels for transmission of said second transmit signal.

17. A method as claimed in claim 16 further comprising reallocating remaining ones of said quantity of said wireless channels for transmission of said first transmit signal.

18. A method as claimed in claim 17 wherein said reallocating operation comprises:

splitting said first transmit signal into a second number of said subsectional signals, said second number corresponding to said remaining ones of said quantity of said wireless channels;

allocating one each of said second number of said subsectional signals for transmission over said remaining ones of said quantity of said wireless channels; and

transmitting said second number of said subsectional signals over said remaining ones of said quantity of said wireless channels to said second communication station.

19. In a wireless communication system, an apparatus for selectively utilizing wireless channels, said apparatus comprising:

a data input/output (I/O) port for receiving a data signal;

an inverse multiplexer in communication with said data I/O port;

a voice port for receiving a voice signal;

transceivers in selective communication with each of said voice port and an output of said inverse multiplexer, one each of said transceivers supporting one each of said wireless channels; and

a processor in communication with said inverse multiplexer, said voice port, and said transceivers for enabling transmission of said data signal and said voice signal via said transceivers over said wireless channels, said processor performing operations including;

when said data signal is received, determining a data type for said data signal, ascertaining an available number of said wireless channels, and allocating said available number of said channels to be a quantity of said wireless channels for transmission of said data signal, said quantity of said wireless channels being greater than one; and

when said voice signal is received, assigning one of said wireless channels for transmission of said voice signal.

20. An apparatus as claimed in claim 19 wherein said transceivers supporting said quantity of said wireless channels establish a circuit-switched connection for transmission of said data signal.

21. An apparatus as claimed in claim 19 wherein said transceiver supporting said one of said wireless channels establishes a circuit-switched connection for transmission of said voice signal.

22. An apparatus as claimed in claim 19 wherein said wireless communication system is a satellite-based communication network that includes earth-orbiting satellites, and said transceivers transmit said data signal and said voice signal to ones of said earth-orbiting satellites.

23. An apparatus as claimed in claim 19 wherein said wireless communication system is a satellite-based communication network and said wireless channels are wireless voice channels managed by said satellite-based communication network.

24. An apparatus as claimed in claim 19 wherein when said data type of said data signal is a time-noncritical class, said processor enables transmission of said data signal in an acknowledged mode.

25. An apparatus as claimed in claim 24 wherein said wireless communication system is an earth-orbiting satellite-based communication network, and said acknowledged mode is a communication service provided by said network.

26. An apparatus as claimed in claim 19 wherein when said data type of said data signal is a time-critical class, said processor enables transmission of said data signal in an unacknowledged mode.

27. An apparatus as claimed in claim 26 wherein said wireless communication system is an earth-orbiting satellite-based communication network, and said unacknowledged mode is a communication service provided by said network.

28. An apparatus as claimed in claim 19 wherein:

when said quantity of said wireless channels is more than one, said inverse multiplexer splits said data signal into a number of subsectional signals, said number corresponding to said quantity of said wireless channels;

said processor allocates one each of said number of said subsectional signals for transmission over one each of said quantity of said wireless channels via corresponding ones of said transceivers; and

said transceivers transmit said number of said subsectional signals over said quantity of said wireless channels.

29. An apparatus as claimed in claim 19 wherein when said voice signal is detected, said processor reassigns one of said quantity of said wireless channels for transmission of said voice signal.

30. An apparatus as claimed in claim 29 wherein said processor reallocates remaining ones of said quantity of said wireless channels for transmission of said data signal.

31. In a satellite-based communication network that includes earth-orbiting satellites, a method for utilizing wireless channels of said network to communicate between a first communication station and a second communication station comprising:

detecting a transmit signal at said first communication station;

determining, at said first communication station, a data type of said transmit signal;

assigning, at said first communication station, a quantity of said wireless channels for transmission of said transmit signal in response to said data type;

transmitting said transmit signal over said quantity of said wireless channels between said first communication station and one of said earth-orbiting satellites;

forwarding said transmit signal from said one of said earth-orbiting satellites toward said second communication station; and

receiving, at said second communication station, said transmit signal from said first communication station.

32. A method as claimed in claim 31 further comprising establishing a circuit-switched connection for said transmit signal between said first and second communication stations, said circuit-switched connection utilizing said quantity of said wireless channels between said first communication station and said one earth-orbiting satellite and said quantity of said wireless channels between said one earth-orbiting satellite and said second communication station.

33. A method as claimed in claim 31 wherein said satellite-based communication network includes a gateway for directing communication between said earth-orbiting satellites and a public switched telephone network (PSTN), said second communication station is in communication with said gateway via said PSTN, and said forwarding operation forwards said transmit signal for receipt at said gateway.

34. A method as claimed in claim 31 wherein said wireless channels are voice channels.

35. A method as claimed in claim 31 wherein:

when said quantity of said wireless channels is more than one, said first communication station performs further operations comprising;

splitting said transmit signal into a number of subsectional signals, said number corresponding to said quantity of said wireless channels; and

allocating one each of said number of said subsectional signals for transmission over one each of said quantity of said wireless channels; and

said receiving operation performed at said second communication station comprises;

receiving said subsectional signals over said quantity of said wireless channels; and

combining said subsectional signals to form said transmit signal.

36. A method as claimed in claim 31 wherein:

when said quantity of said wireless channels is more than one, said first communication station performs further operations comprising;

splitting said transmit signal into a number of subsectional signals, said number corresponding to said quantity of said wireless channels; and

allocating one each of said number of said subsectional signals for transmission over one each of said quantity of said wireless channels; and

said receiving operation performed at said second communication station comprises;

receiving said subsectional signals over a number of PSTN links, said number of PSTN links corresponding to said quantity of said wireless channels; and

combining said subsectional signals to form said transmit signal.

37. A method as claimed in claim 31 wherein:

said determining operation identifies said transmit signal as a voice signal whose said data type is a time-critical class; and

said assigning operation assigns said quantity as being one of said wireless channels.

38. A method as claimed in claim 31 wherein:

said determining operation identifies said transmit signal as a data signal whose said data type is a time-noncritical class; and

said assigning operation comprises;

ascertaining an available number of said wireless channels; and

allocating said available number of said channels to be said quantity of said wireless channels, said quantity of said wireless channels being greater than one.

39. A method as claimed in claim 38 wherein said data signal is transmitted in an acknowledged mode, said acknowledged mode being a communication service provided by said satellite-based communication network.

40. A method as claimed in claim 31 wherein:

said determining operation identifies said transmit signal as a video signal whose said data type is a time-critical class having a data rate that exceeds a predetermined data rate of each of said wireless channels;

said assigning operation comprises;

ascertaining an available number of said wireless channels; and

allocating said available number of said channels to be said quantity of said wireless channels, said quantity of channels being greater than one.

41. A method as claimed in claim 40 wherein said video signal is transmitted in an unacknowledged mode, said unacknowledged mode being a communication service provided by said satellite-based communication network.

42. A method as claimed in claim 31 wherein said satellite-based communication network includes a gateway for directing communication between said earth-orbiting satellites and a public switched telephone network (PSTN) and said second communication station is incorporated in said gateway.

43. In a satellite-based global communication network that supports communication over wireless voice channels via earth-orbiting satellites, a system for utilizing said wireless voice channels to convey a data signal from a first terminal to a second terminal, said system comprising:

a first communication station including;

a first data input/output (I/O) port for detecting said data signal from said first terminal;

a first inverse multiplexer in communication with said first data I/O port, said inverse multiplexer splitting said data signal into a number of subsectional signals, said number corresponding to a quantity of said wireless voice channels that are available for transmitting said data signal; and

first transceivers in communication with an output of said inverse multiplexer, one each of said first transceivers supporting one each of said wireless voice channels, said first transceivers transmitting said number of said subsectional signals over said quantity of said wireless channels to one of said earth-orbiting satellites; and

a second communication station including;

receiving elements for receiving said subsectional signals forwarded from said one of said earth-orbiting satellites;

a second inverse multiplexer in communication with said receiving elements for reverse inverse multiplexing said subsectional signals to form said data signal; and

a second data I/O port in communication with said second inverse multiplexer for passing said data signal to said second terminal.

44. A system as claimed in claim 43 wherein said first communication station further includes:

a voice port for detecting a voice signal; and

a processor in communication with said voice port, said inverse multiplexer, and said first transceivers, such that when said voice signal is detected, said processor reassigns one of said quantity of said wireless voice channels for transmission of said voice signal, and enables a corresponding one of said first transceivers to transmit said voice signal over said one of said quantity of said wireless voice channels.

45. A system as claimed in claim 44 wherein:

said first inverse multiplexer splits said data signal into a second number of said subsectional signals, said second number corresponding to a remaining quantity of said wireless voice channels that are available for transmitting said data signal; and

remaining ones of said first transceivers supporting said remaining quantity said wireless channels transmit said second number of said subsectional signals over said remaining quantity of said wireless voice channels to said one of said earth-orbiting satellites.

46. A system as claimed in claim 44 wherein said receiving elements are transceivers configured to communicate with said earth-orbiting satellites using said wireless voice channels.

47. A system as claimed in claim 43 wherein said satellite-based communication network includes a gateway for directing communication between said earth-orbiting satellites and a public switched telephone network (PSTN), and said receiving elements of said second communication station are modems configured to communicate with said earth-orbiting satellites via said PSTN and said gateway using individual PSTN links.