Avoidance of wireless devices

• US 20070082633A1
• Filed: 11/16/2005
• Published: 04/12/2007
• Est. Priority Date: 10/06/2005
• Status: Abandoned Application

• Current Assignee: Staccato Communications Incorporated
• Original Assignee: Staccato Communications Incorporated
• Inventors: Kumar, Nishant, Carbone, Nicholas, Gallagher, Timothy
• Application Number:
  US11/281,260
• Publication Number:
  US 20070082633A1
• Time in Patent Office: Days
• US Class Current: 455/166.200
• CPC Class Codes: H04B 1/719 Interference-related aspects
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0068 by puncturing
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2634 Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks

Abstract

Avoiding a frequency spectrum in a wireless medium is disclosed. An identification of the frequency spectrum in the wireless medium to avoid is obtained. A set of subcarriers to suppress based at least on part on the frequency spectrum to avoid is determined. Information is reallocated in response to the set of subcarriers to suppress.

Claims

1. A method of avoiding a frequency spectrum in a wireless medium, comprising:

obtaining an identification of the frequency spectrum in the wireless medium to avoid;

determining a set of subcarriers to suppress based at least on part on the frequency spectrum to avoid; and

reallocating information in response to the set of subcarriers to suppress.

2. A method as recited in claim 1, wherein the method is performed by an ultrawideband (UWB) wireless device.

3. A method as recited in claim 1, wherein the frequency spectrum to avoid is associated with a narrowband wireless device.

4. A method as recited in claim 1, wherein at least one of the set of subcarriers to suppress does not overlap with a band used by another wireless device transmitting in the wireless medium.

5. A method as recited in claim 1, wherein obtaining the identification includes receiving a range of frequencies.

6. A method as recited in claim 1, wherein obtaining the identification includes identifying a band used by a wireless device transmitting in the wireless medium.

7. A method as recited in claim 1, wherein reallocating information is based at least in part on a data rate.

8. A method as recited in claim 1, wherein reallocating information includes evaluating a degree to which a potential reallocation of information affects performance.

9. A method as recited in claim 1, wherein reallocating information includes evaluating a degree to which a potential reallocation of information affects performance, including an error rate.

10. A method as recited in claim 1, wherein reallocating information includes evaluating a degree to which a potential reallocation of information affects performance, including a transmission rate.

11. A method as recited in claim 1, wherein reallocating information includes using a band that does not include the frequency spectrum to avoid.

12. A method as recited in claim 1, wherein reallocating information includes using a new band.

13. A method as recited in claim 1, wherein reallocating information includes setting values associated with the set of subcarriers to suppress to substantially zero values.

14. A method as recited in claim 1, wherein reallocating information includes not transmitting in the frequency spectrum to avoid.

15. A method as recited in claim 1, wherein:

reallocating information includes not transmitting in the set of subcarriers to suppress; and

a component associated with transmission is turned off during a non transmission period.

16. A method as recited in claim 1, wherein:

reallocating information includes discarding information associated with the set of subcarriers to suppress; and

the discarded information includes information generated using a relatively weak code.

17. A method as recited in claim 1, wherein:

reallocating information includes discarding information associated with the set of subcarriers to suppress; and

the discarded information includes information generated using a relatively weak code, including a weakest code.

18. A method as recited in claim 1, wherein:

reallocating information includes discarding information associated with the set of subcarriers to suppress; and

the discarded information is selected.

19. A method as recited in claim 1, wherein:

reallocating information includes discarding information associated with the set of subcarriers to suppress; and

the discarded information is selected by rearranging an ordering.

20. A method as recited in claim 1, wherein reallocating information includes:

storing data to transmit; and

assigning the stored data to at least one subcarrier other than the set of subcarriers to suppress.

21. A method as recited in claim 1, further including receiving a data rate associated with data to transmit, wherein reallocating information includes processing the data to transmit using processing associated with a data rate lower than the received data rate.

22. A method as recited in claim 1, wherein reallocating information includes discarding encoded data using an alternate puncturing scheme.

23. A method as recited in claim 1, wherein reallocating information includes discarding encoded data using an alternate puncturing scheme, such that the amount of encoded data discarded by the alternate puncturing scheme varies in accordance with the number of subcarriers to suppress.

24. A method as recited in claim 1, further including communicating information associated with the step of reallocating information to a receiver.

25. A method as recited in claim 1, further including communicating information associated with the step of reallocating information to a receiver using a PHY header.

26. A method as recited in claim 1, further including communicating information associated with the step of reallocating information to a receiver using an extended PHY header.

27. A method as recited in claim 1, further including communicating information associated with the step of reallocating information to a receiver using a frame.

28. A method as recited in claim 1, further including:

communicating information associated with the step of reallocating information to a receiver; and

using the communicated information at the receiver to process a signal received via the wireless medium.

29. A method as recited in claim 1, further including:

communicating information associated with the step of reallocating information to a receiver; and

using the communicated information at the receiver to process a signal received via the wireless medium, including using a neutral value instead of a received value.

30. A method as recited in claim 1, further including:

communicating information associated with the step of reallocating information to a receiver; and

using the communicated information at the receiver to process a signal received via the wireless medium, including discarding a received value.

31. A method as recited in claim 1, further including:

communicating information associated with the step of reallocating information to a receiver; and

using the communicated information at the receiver to process a signal received via the wireless medium, including rearranging an ordering.

32. A system for avoiding a frequency spectrum in a wireless medium, comprising:

a processor configured to;

obtain an identification of the frequency spectrum in the wireless medium to avoid;

determine a set of subcarriers to suppress based at least on part on the frequency spectrum to avoid; and

reallocate information in response to the set of subcarriers to suppress.

33. A computer program product for avoiding a frequency spectrum in a wireless medium, the computer program product being embodied in a computer readable medium and comprising computer instructions for:

obtaining an identification of the frequency spectrum in the wireless medium to avoid;

determining a set of subcarriers to suppress based at least on part on the frequency spectrum to avoid; and

reallocating information in response to the set of subcarriers to suppress.