SYSTEM AND METHOD FOR TRANSMISSION AND DETECTION OF FRAME INCLUDING BURSTS OF PULSES

• US 20110038309A1
• Filed: 02/08/2010
• Published: 02/17/2011
• Est. Priority Date: 07/31/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Shi, Jun, Ekbal, Amal, Julian, David Jonathan
• Granted Patent: US 8,804,483 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04B 2001/6908 using time hopping
• CPC Class Codes: H04L 25/00 Baseband systems
• CPC Class Codes: H04L 25/493 by transition coding, i.e. the time-position or direction of a transition being encoded before transmission

Abstract

A method of transmitting and receiving data frames using pulses is disclosed. According to the transmitting method, a first signal is transmitted including one or more bursts of pulses during a first portion of a transmission frame, and not transmitting the first signal during a second portion of the transmission frame. The not transmitting the first signal may include maintaining one or more silence periods for the second portion of the transmission frame, or transmitting a second signal distinct from the first signal. According to the receiving method, a signal including one or more bursts of pulses is received during a first portion of a transmission frame, an analysis of the one or more bursts of pulses is performed, and the transmission frame is detected based on the analysis of the one or more bursts of pulses.

Claims

1. A method of wireless communications, comprising:

transmitting a first signal by a first apparatus comprising one or more bursts of pulses during a first portion of a transmission frame; and

not transmitting the first signal by the first apparatus during a second portion of the transmission frame.

2. The method of claim 1, wherein not transmitting the first signal comprises maintaining one or more silence periods for the second portion of the transmission frame.

3. The method of claim 1, wherein not transmitting the first signal comprises transmitting a second signal distinct from the first signal.

4. The method of claim 3, wherein a first frequency spectrum of the first signal is substantially distinct from a second frequency spectrum of the second signal.

5. The method of claim 4, wherein the first frequency spectrum of the first signal comprises an ultra-wideband (UWB) spectrum.

6. The method of claim 1, wherein the first portion of the transmission frame is situated within a preamble of the transmission frame.

7. The method of claim 1, wherein the second portion of the transmission frame comprises a portion of the transmission frame remaining from the first portion.

8. The method of claim 1, wherein the second portion of the transmission frame is situated within a preamble of the transmission frame.

9. The method of claim 1, wherein the one or more bursts of pulses each comprises N substantially uniformly-spaced pulses with a pulse repetition period of T_P.

10. The method of claim 1, wherein the one or more bursts of pulses each comprises N pulses sent in a time hopping fashion.

11. The method of claim 1, wherein the one or more burst of pulses each comprises N pulses sent in a pulse position modulation fashion.

12. The method of claim 1, wherein the one or more burst of pulses each comprises a pseudo-random sequence of pulses.

13. The method of claim 12, wherein the same pseudo-random sequence of pulses is used across multiple bursts within a preamble of the transmission frame.

14. The method of claim 12, wherein the pseudo-random sequence of pulses is generated from a seed shared with a second apparatus that will use the seed to detect the pseudo-random sequence.

15. The method of claim 2, wherein a length of at least one silence period is at least 10 times greater than a length of at least one burst of pulses.

16. The method of claim 2, wherein a length of at least one silence period is greater than 700 us and the length of at least one burst of pulses is less than 60 us.

17. The method of claim 1, further comprising transmitting a data payload within a third portion of the transmission frame.

18. An apparatus for wireless communications, comprising:

means for transmitting a first signal comprising one or more burst of pulses during a first portion of a transmission frame; and

means for not transmitting the first signal during a second portion of the transmission frame.

19. The apparatus of claim 18, wherein the means for not transmitting the first signal comprises means for maintaining one or more silence periods for the second portion of the transmission frame.

20. The apparatus of claim 18, wherein the means for not transmitting the first signal comprises means for transmitting a second signal distinct from the first signal.

21. The apparatus of claim 20, wherein a first frequency spectrum of the first signal is substantially distinct from a second frequency spectrum of the second signal.

22. The apparatus of claim 21, wherein the first frequency spectrum of the first signal comprises an ultra-wideband (UWB) spectrum.

23. The apparatus of claim 18, wherein the first portion of the transmission frame is situated within a preamble of the transmission frame.

24. The apparatus of claim 18, wherein the second portion of the transmission frame comprises a portion of the transmission frame remaining from the first portion.

25. The apparatus of claim 18, wherein the second portion of the transmission frame is situated within a preamble of the transmission frame.

26. The apparatus of claim 18, wherein the one or more bursts of pulses each comprises N substantially uniformly-spaced pulses with a pulse repetition period of T_P.

27. The apparatus of claim 18, wherein the one or more bursts of pulses each comprises N pulses sent in a time hopping fashion.

28. The apparatus of claim 18, wherein the one or more burst of pulses each comprises N pulses sent in a pulse position modulation fashion.

29. The apparatus of claim 18, wherein the one or more burst of pulses each comprises a pseudo-random sequence of pulses.

30. The apparatus of claim 29, wherein the same pseudo-random sequence of pulses is used across multiple bursts within a preamble of the transmission frame.

31. The apparatus of claim 29, wherein the pseudo-random sequence of pulses is generated from a seed shared with a second apparatus that will use the seed to detect the pseudo-random sequence.

32. The apparatus of claim 19, wherein a length of at least one silence period is at least 10 times greater than a length of at least one burst of pulses.

33. The apparatus of claim 19, wherein a length of at least one silence period is greater than 700 us and the length of at least one burst of pulses is less than 60 us.

34. The apparatus of claim 18, further comprising means for transmitting a data payload within a third portion of the transmission frame.

35. An apparatus for wireless communications, comprising:

a transmitter adapted to transmit a first signal comprising one or more bursts of pulses during a first portion of a transmission frame, and not transmit the first signal during a second portion of the transmission frame.

36. The apparatus of claim 35, wherein the transmitter is adapted to maintain one or more silence periods for the second portion of the transmission frame.

37. The apparatus of claim 35, wherein the transmitter is adapted to transmit a second signal distinct from the first signal during the second portion of the transmission frame.

38. The apparatus of claim 37, wherein a first frequency spectrum of the first signal is substantially distinct from a second frequency spectrum of the second signal.

39. The apparatus of claim 37, wherein the first frequency spectrum of the first signal comprises an ultra-wideband (UWB) spectrum.

40. The apparatus of claim 35, wherein the first portion of the transmission frame is situated within a preamble of the transmission frame.

41. The apparatus of claim 35, wherein the second portion of the transmission frame comprises a portion of the transmission frame remaining from the first portion.

42. The apparatus of claim 35, wherein the second portion of the transmission frame is situated within a preamble of the transmission frame.

43. The apparatus of claim 35, wherein the one or more bursts of pulses each comprises N uniformly-spaced pulses with a pulse repetition period of T_P.

44. The apparatus of claim 35, wherein the one or more bursts of pulses each comprises N pulses sent in a time hopping fashion.

45. The apparatus of claim 35, wherein the one or more bursts of pulses each comprises N pulses sent in a pulse position modulation fashion.

46. The apparatus of claim 35, wherein the one or more bursts of pulses each comprises a pseudo-random sequence of pulses.

47. The apparatus of claim 46, wherein the same pseudo-random sequence of pulses is used across multiple bursts within a preamble of the transmission frame.

48. The apparatus of claim 46, wherein the pseudo-random sequence of pulses is generated from a seed shared with a second apparatus that will use the seed to detect the pseudo-random sequence.

49. The apparatus of claim 36, wherein a length of at least one silence period is at least 10 times greater than a length of at least one burst of pulses.

50. The apparatus of claim 36, wherein a length of at least one silence period is greater than 700 us and the length of at least one burst of pulses is less than 60 us.

51. The apparatus of claim 36, wherein the transmitter is adapted to transmit a data payload within a third portion of the transmission frame.

52. A computer program product, comprising:

a computer readable medium comprising instructions executable by an apparatus to;

transmit a first signal comprising one or more bursts of pulses during a first portion of a transmission frame; and

not transmit the first signal during a second portion of the transmission frame.

53. A headset, comprising:

a transducer adapted to generate audio data; and

a transmitter adapted to;

transmit a first signal comprising one or more bursts of pulses during a first portion of a transmission frame;

not transmit the first signal during a second portion of the transmission frame; and

transmit the audio data during a third portion of the transmission frame.

54. A user device, comprising:

a user interface adapted to generate data; and

a transmitter adapted to;

transmit a first signal comprising one or more bursts of pulses during a first portion of a transmission frame;

not transmit the first signal during a second portion of the transmission frame; and

transmit the data during a third portion of the transmission frame.

55. A sensing device, comprising:

a sensor adapted to generate data; and

a transmitter adapted to;

transmit a first signal comprising one or more burst of pulses during a first portion of a transmission frame;

not transmit the first signal during a second portion of the transmission frame; and

transmit the data during a third portion of the transmission frame.