Pulse arbitration for network communications

• US 8,553,744 B2
• Filed: 01/06/2009
• Issued: 10/08/2013
• Est. Priority Date: 01/06/2009
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jia, Zhanfeng, Julian, David Jonathan, Ekbal, Amal
• Primary Examiner(s): FILE, ERIN M
• Application Number:
  US12/349,430
• Publication Number:
  US 20100172393A1
• Time in Patent Office: 1,736 Days
• Field of Search: 375/132
• US Class Current: 375/132
• CPC Class Codes: H04B 1/719 Interference-related aspects
• CPC Class Codes: H04B 2001/7154 with means for preventing interference
• CPC Class Codes: H04B 2201/709709 Methods of preventing interference

Abstract

An apparatus for communications configured to support first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence. The apparatus further configured to select one of the first and second channels for communications to avoid a collision of information that would otherwise occur based on their pseudorandom sequences.

Claims

1. An apparatus for communications, comprising:

a processing system configured to;

support first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence;

determine whether a collision of information on the first and second channels would occur based on the pseudorandom sequences; and

select, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications.

2. The apparatus of claim 1 wherein the processing system is further configured to use frequency hopping to spread the spectrum of the first and second channels, wherein the frequency hopping for each of the first and second channels is based on its a respective one of the pseudorandom sequences.

3. The apparatus of claim 1 wherein the processing system is further configured to use time hopping to spread the spectrum of the first and second channels, wherein the time hopping for each of the first and second channels is based on its a respective one of the pseudorandom sequences.

4. The apparatus of claim 3 wherein the processing system is further configured to use time hopping with binary pulse position modulation to spread the spectrum of the first and second channels.

5. The apparatus of claim 1 wherein the processing system is further configured to select the first channel if the first channel is scheduled to transmit and the second channel is scheduled to receive when the information on the first and second channels would otherwise collide.

6. The apparatus of claim 1 wherein the processing system is further configured to select the first channel if the first channel has a higher quality of service requirement than the second channel.

7. The apparatus of claim 1 wherein the processing system is further configured to select the first channel if the first channel contains voice and the second channel contains data when the information on the first and second channels would otherwise collide.

8. The apparatus of claim 1 wherein the processing system is further configured to select the first channel if the first channel contains an acknowledgement of a transmission and the second channel does not contain an acknowledgement of a transmission.

9. The apparatus of claim 1 wherein the processing system is further configured to select one of the first and second channels based on at least one fairness criterion.

10. The apparatus of claim 1 wherein the processing system is further configured to select the first channel if the first channel has a higher priority than the second channel.

11. The apparatus of claim 1 wherein the processing system is further configured to randomly select one of the first and second channels based on a determination that a collision of information would occur.

12. The apparatus of claim 1 wherein the processing system is further configured to:

use time hopping with pulse position modulation to spread the spectrum of the first and second channels; and

determine whether the collision would occur by determining whether pulses are scheduled on the first and second channels in a common time slot number in different portions of a symbol frame, wherein the different portions of the symbol frame correspond to different values for the pulse position modulation.

13. A method for communications for an apparatus, comprising:

supporting first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence;

determining whether a collision of information on the first and second channels would occur based on the pseudorandom sequences; and

selecting, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications.

14. The method of claim 13 further comprising using frequency hopping to spread the spectrum of the first and second channels, wherein the frequency hopping for each of the first and second channels is based on its a respective one of the pseudorandom sequences.

15. The method of claim 13 further comprising using time hopping to spread the spectrum of the first and second channels, wherein the time hopping for each of the first and second channels is based on its a respective one of the pseudorandom sequences.

16. The method of claim 15 wherein time hopping is used with binary pulse position modulation to spread the spectrum of the first and second channels.

17. The method of claim 13 wherein the first channel is selected if the first channel is scheduled to transmit and the second channel is scheduled to receive when the information on the first and second channels would otherwise collide.

18. The method of claim 13 wherein the first channel is selected if the first channel has a higher quality of service requirement than the second channel.

19. The method of claim 13 wherein the first channel is selected if the first channel contains voice and the second channel contains data when the information on the first and second channels would otherwise collide.

20. The method of claim 13 wherein the first channel is selected if the first channel contains an acknowledgement of a transmission and the second channel does not contain an acknowledgement of a transmission.

21. The method of claim 13 wherein one of the first and second channels is selected based on at least one fairness criterion.

22. The method of claim 13 wherein the first channel is selected if the first channel has a higher priority than the second channel.

23. The method of claim 13 further comprising randomly selecting one of the first and second channels based on a determination that a collision of information would occur.

24. The method of claim 13 further comprising:

using time hopping with pulse position modulation to spread the spectrum of the first and second channels; and

determining whether the collision would occur by determining whether pulses are scheduled on the first and second channels in a common time slot number in different portions of a symbol frame, wherein the different portions of the symbol frame correspond to different values for the pulse position modulation.

25. An apparatus for communications, comprising:

means for supporting first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence;

means for determining whether a collision of information on the first and second channels would occur based on the pseudorandom sequences; and

means for selecting, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications.

26. The apparatus of claim 25 wherein the means for supporting first and second spread-spectrum channels is configured to use frequency hopping to spread the spectrum of the first and second channels, wherein the frequency hopping for each of the first and second channels is based on its a respective one of the pseudorandom sequences.

27. The apparatus of claim 25 wherein the means for supporting first and second spread-spectrum channels is configured to use time hopping to spread the spectrum of the first and second channels, wherein the time hopping for each of the first and second channels is based on a respective one of the pseudorandom sequences.

28. The apparatus of claim 27 wherein the means for supporting first and second spread-spectrum channels is further configured to use time hopping with binary pulse position modulation to spread the spectrum of the first and second channels.

29. The apparatus of claim 25 wherein the means for selecting one of the first and second channels is configured to select the first channel if the first channel is scheduled to transmit and the second channel is scheduled to receive when the information on the first and second channels would otherwise collide.

30. The apparatus of claim 25 wherein the means for selecting one of the first and second channels is configured to select the first channel if the first channel has a higher quality of service requirement than the second channel.

31. The apparatus of claim 25 wherein the means for selecting one of the first and second channels is configured to select the first channel if the first channel contains voice and the second channel contains data when the information on the first and second channels would otherwise collide.

32. The apparatus of claim 25 wherein the means for selecting one of the first and second channels is configured to select the first channel if the first channel contains an acknowledgement of a transmission and the second channel does not contain an acknowledgement of a transmission.

33. The apparatus of claim 25 wherein the means for selecting one of the first and second channels is configured to select sftone of the first and second channels based on at least one fairness criterion.

34. The apparatus of claim 25 wherein the means for selecting one of the first and second channels is configured to select the first channel if the first channel has a higher priority than the second channel.

35. The apparatus of claim 25 wherein means for selecting one of the first and second channels is configured to randomly select one of the first and second channels based on a determination that a collision of information would occur.

40. The apparatus of claim 25 wherein:

the means for supporting first and second spread-spectrum channels is configured to use time hopping with pulse position modulation to spread the spectrum of the first and second channels; and

the means for determining whether a collision of information on the first and second channels would occur is configured to determine whether pulses are scheduled on the first and second channels in a common time slot number in different portions of a symbol frame, wherein the different portions of the symbol frame correspond to different values for the pulse position modulation.

36. A computer-program product for wireless communications, comprising:

non-transitory computer-readable medium comprising codes executable by at least one processor to;

support first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence;

determine whether a collision of information on the first and second channels would occur based on the pseudorandom sequences; and

select, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications.

37. A headset, comprising:

a processing system configured to;

support first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence,

determine whether a collision of information on the first and second channels would occur based on the pseudorandom sequences, and

select, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications; and

a transducer configured to provide an audio output based on information from at least one of the first and second channels.

38. A watch comprising:

a processing system configured to;

support first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence,

determine whether a collision of information on the first and second channels would occur based on the pseudorandom sequences, and

select, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications; and

a user interface configured to provide an indication based on information from at least one of the first and second channels.

39. A sensing device for wireless communications, comprising:

a processing system configured to;

support first and second spread-spectrum channels, each of the first and second channels being based on a different pseudorandom sequence,

determine whether a collision of information on the first and second channels would occur based on the pseudorandom sequences, and

select, based on the collision determination, between using one of the first and second channels for communications or using both of the first and second channels for communications; and

a sensor configured to provide information to at least one of the first and second channels.