Wireless ultra wideband network having frequency bin transmission level setting and related methods

• US 20050164642A1
• Filed: 10/12/2004
• Published: 07/28/2005
• Est. Priority Date: 01/28/2004
• Status: Active Grant

• Current Assignee: Lionra Technologies Limited (Atlantic IP Services Limited)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Roberts, Richard D.
• Granted Patent: US 7,263,333 B2
• Time in Patent Office: Days
• US Class Current: 455/67.130
• CPC Class Codes: H04B 1/719 Interference-related aspects
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/346 distributing total power among users or channels

Abstract

A wireless ultra wideband (UWB) network may include a plurality of UWB wireless devices communicating over a plurality of UWB frequency bins extending over a UWB frequency range. At least one of the UWB wireless devices may be for determining an existing interference level associated with at least one of the UWB frequency bins, and for setting a desired transmission level for use with the at least one UWB frequency bin. In particular, the desired transmission level may be set based upon the existing interference level to keep a predicted overall interference level of the at least one UWB frequency bin below an interference ceiling.

Claims

1. An ultra wideband (UWB) wireless network comprising:

a plurality of UWB wireless devices communicating over a plurality of UWB frequency bins extending over a UWB frequency range;

at least one of said UWB wireless devices for

determining an existing interference level associated with at least one of the UWB frequency bins, and

setting a desired transmission level for use with the at least one UWB frequency bin based upon the existing interference level to keep a predicted overall interference level of the at least one UWB frequency bin below an interference ceiling.

2. The UWB wireless network of claim 1 wherein the existing interference level comprises an existing interference noise temperature level, and wherein the interference ceiling comprises an interference noise temperature ceiling.

3. The UWB wireless network of claim 2 wherein said at least one UWB wireless device determines the existing interference noise temperature level by:

determining a plurality of successive signal levels associated with the at least one UWB frequency bin;

determining an interference noise floor based upon the successively determined signal levels; and

determining the interference noise temperature level based upon the interference noise floor.

4. The UWB wireless network of claim 3 wherein said at least one UWB wireless device determines the interference noise floor by:

generating a histogram based upon the successively determined signal levels; and

determining the interference noise floor based upon the histogram.

5. The UWB wireless network of claim 3 wherein said at least one UWB wireless device has a gain level and a noise level associated therewith;

and wherein said at least one UWB wireless device determines the existing interference noise temperature level based upon the interference noise floor and the gain and noise levels associated with said at least one UWB wireless device.

6. The UWB wireless network of claim 3 wherein said at least one UWB wireless device comprises a fast Fourier transform (FFT) module for determining the successive signal levels.

7. The UWB wireless network of claim 3 wherein said at least one UWB wireless device comprises a discrete Fourier transform (DFT) module for determining the actual signal levels.

8. The UWB wireless network of claim 1 wherein said at least one UWB wireless device communicates the desired transmission level to another UWB wireless device for use in communications therewith.

9. The UWB wireless network of claim 1 wherein said at least one UWB wireless device determines the existing interference level when it is not communicating with another UWB wireless device.

10. The UWB wireless network of claim 1 wherein the UWB frequency bins comprise orthogonal frequency division multiplexing (OFDM) frequency bins.

11. The UWB wireless network of claim 1 wherein said at least one UWB wireless device performs frequency hopping.

12. A ultra wideband (UWB) wireless network comprising:

a plurality of UWB wireless devices communicating over a plurality of UWB orthogonal frequency division multiplexing (OFDM) bins extending over a UWB frequency range;

at least one of said UWB wireless devices for

determining an existing interference noise temperature level associated with at least one of the OFDM frequency bins, and

setting a desired transmission level for use with the at least one OFDM frequency bin based upon the existing interference noise temperature level to keep a predicted overall interference noise temperature level of the at least one OFDM frequency bin below an interference noise temperature ceiling.

13. The UWB wireless network of claim 12 wherein said at least one UWB wireless device determines the existing interference noise temperature level by:

determining a plurality of successive signal levels associated with the at least one OFDM frequency bin;

determining an interference noise floor based upon the successively determined signal levels; and

determining the interference noise temperature level based upon the interference noise floor.

14. The UWB wireless network of claim 13 wherein determining the interference noise floor comprises:

generating a histogram based upon the successively determined signal levels; and

determining the interference noise floor based upon the histogram.

15. The UWB wireless network of claim 13 wherein said at least one UWB wireless device has a gain level and a noise level associated therewith;

and wherein said at least one UWB wireless device determines the existing interference noise temperature level based upon the interference noise floor and the gain and noise levels associated with said at least one UWB wireless device.

16. The UWB wireless network of claim 13 wherein said at least one UWB wireless device comprises a fast Fourier transform (FFT) module for determining the successive signal levels.

17. The UWB wireless network of claim 13 wherein said at least one UWB wireless device comprises a discrete Fourier transform (DFT) module for determining the actual signal levels.

18. The UWB wireless network of claim 12 wherein said at least one UWB wireless device communicates the desired transmission level to another UWB wireless device for use in communications therewith.

19. The UWB wireless network of claim 12 wherein said at least one UWB wireless device determines the existing interference noise temperature level when it is not communicating with another UWB wireless device.

20. The UWB wireless network of claim 12 wherein said at least one UWB wireless device performs frequency hopping.

21. A ultra wideband (UWB) wireless device comprising:

a UWB transceiver for communicating with at least one other UWB wireless device over a plurality of UWB frequency bins extending over a UWB frequency range;

a controller coupled to said UWB transceiver for

determining an existing interference level associated with at least one of the UWB frequency bins, and

setting a desired transmission level for use with the at least one UWB frequency bin based upon the existing interference level to keep a predicted overall interference level of the at least one UWB frequency bin below an interference ceiling.

22. The UWB wireless device of claim 21 wherein the existing interference level comprises an existing interference noise temperature level, and wherein the interference ceiling comprises an interference noise temperature ceiling.

23. The UWB wireless device of claim 22 wherein said controller determines the existing interference noise temperature level by:

determining a plurality of successive signal levels associated with the at least one frequency bin;

determining an interference noise floor based upon the successively determined signal levels; and

determining the interference noise temperature level based upon the interference noise floor.

24. The UWB wireless device of claim 23 wherein said controller determines the interference noise floor by:

generating a histogram based upon the successively determined signal levels; and

determining the interference noise floor based upon the histogram.

25. The UWB wireless device of claim 23 wherein said UWB transceiver has a gain level and a noise level associated therewith;

and wherein said controller determines the existing interference noise temperature level based upon the interference noise floor and the gain and noise levels associated with said UWB transceiver.

26. The UWB wireless device of claim 23 wherein said controller comprises a fast Fourier transform (FFT) module for determining the successive signal levels.

27. The UWB wireless device of claim 23 wherein said controller comprises a discrete Fourier transform (DFT) module for determining the actual signal levels.

28. The UWB wireless device of claim 21 wherein said controller cooperates with said UWB transceiver to communicate the desired transmission level to another UWB wireless device for use in communications therewith.

29. The UWB wireless device of claim 21 wherein said controller determines the existing interference level when said UWB transceiver is not communicating with another UWB wireless device.

30. The UWB wireless device of claim 21 wherein the frequency bins comprise orthogonal frequency division multiplexing (OFDM) frequency bins.

31. The UWB wireless device of claim 21 wherein said controller cooperates with said UWB transceiver to perform frequency hopping.

32. A ultra wideband (UWB) wireless communications method comprising:

using a plurality of UWB wireless devices to communicate over a plurality of UWB frequency bins extending over a UWB frequency range;

determining an existing interference level associated with at least one of the UWB frequency bins, and

setting a desired transmission level for use with the at least one UWB frequency bin based upon the existing interference level to keep a predicted overall interference level of the at least one UWB frequency bin below an interference ceiling.

33. The method of claim 32 wherein the existing interference level comprises an existing interference noise temperature level, and wherein the interference ceiling comprises an interference noise temperature ceiling.

34. The method of claim 33 wherein determining the existing interference noise temperature level comprises:

determining a plurality of successive signal levels associated with the at least one UWB frequency bin;

determining an interference noise floor based upon the successively determined signal levels; and

determining the interference noise temperature level based upon the interference noise floor.

35. The method of claim 34 wherein determining the interference noise floor comprises:

generating a histogram based upon the successively determined signal levels; and

determining the interference noise floor based upon the histogram.

36. The method of claim 34 wherein determining the successive signal levels comprises determining the successive signal levels using a fast Fourier transform (FFT) module.

37. The method of claim 34 wherein determining the successive signal levels comprises determining the successive signal levels using a discrete Fourier transform (DFT) module.

38. The method of claim 32 wherein the UWB frequency bins comprise orthogonal frequency division multiplexing (OFDM) frequency bins.