System and method for transmission and detection of frame including bursts of pulses

• US 8,804,483 B2
• Filed: 02/08/2010
• Issued: 08/12/2014
• Est. Priority Date: 07/31/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Shi, Jun, Julian, David Jonathan, Ekbal, Amal
• Primary Examiner(s): Wong, Warner
• Application Number:
  US12/702,017
• Publication Number:
  US 20110038309A1
• Time in Patent Office: 1,646 Days
• Field of Search: 370/205, 370/212, 370/213, 370310-350, 370/533
• US Class Current: 370/213
• 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 to a remote apparatus by a first apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the first apparatus and the remote apparatus, and wherein the plurality of bursts of pulses are arranged in a defined pattern; and

not transmitting the first signal by the first apparatus during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined 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 defined 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 defined transmission frame is situated within a preamble of the defined transmission frame.

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

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

9. The method of claim 1, wherein the defined pseudo-random sequence of pulses comprises N pulses sent in a time hopping fashion.

10. The method of claim 1, wherein the defined pseudo-random sequence of pulses comprises N pulses sent in a pulse position modulation fashion.

11. The method of claim 1, wherein the pseudo-random sequence of pulses is used across multiple bursts within a preamble of the defined transmission frame.

12. 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.

13. 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.

14. The method of claim 1, further comprising transmitting the data payload within the second portion of the defined transmission frame.

15. An apparatus for wireless communications, comprising:

means for transmitting a first signal to a remote apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the apparatus and the remote apparatus, and wherein the bursts of pulses are arranged in a defined pattern; and

means for not transmitting the first signal during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined transmission frame.

16. The apparatus of claim 15, wherein the means for not transmitting the first signal comprises means for maintaining one or more silence periods for the second portion of the defined transmission frame.

17. The apparatus of claim 15, wherein the means for not transmitting the first signal comprises means for transmitting a second signal distinct from the first signal.

18. The apparatus of claim 17, wherein a first frequency spectrum of the first signal is substantially distinct from a second frequency spectrum of the second signal.

19. The apparatus of claim 18, wherein the first frequency spectrum of the first signal comprises an ultra-wideband (UWB) spectrum.

20. The apparatus of claim 15, wherein the first portion of the defined transmission frame is situated within a preamble of the defined transmission frame.

21. The apparatus of claim 15, wherein the second portion of the defined transmission frame comprises a portion of the defined transmission frame remaining from the first portion.

22. The apparatus of claim 15, wherein the second portion of the defined transmission frame is situated within a preamble of the defined transmission frame.

23. The apparatus of claim 15, wherein the defined pseudo-random sequence of pulses comprises N pulses sent in a time hopping fashion.

24. The apparatus of claim 15, wherein the defined pseudo-random sequence of pulses comprises N pulses sent in a pulse position modulation fashion.

25. The apparatus of claim 15, wherein the pseudo-random sequence of pulses is used across multiple bursts within a preamble of the defined transmission frame.

26. The apparatus of claim 16, 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.

27. The apparatus of claim 16, 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.

28. The apparatus of claim 15, further comprising means for transmitting the data payload within the second portion of the defined transmission frame.

29. An apparatus for wireless communications, comprising:

a transmitter adapted to;

transmit a first signal to a remote apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the apparatus and the remote apparatus, and wherein the bursts of pulses are arranged in a defined pattern; and

not transmit the first signal during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined transmission frame.

30. The apparatus of claim 29, wherein the transmitter is adapted to maintain one or more silence periods for the second portion of the defined transmission frame.

31. The apparatus of claim 29, wherein the transmitter is adapted to transmit a second signal distinct from the first signal during the second portion of the defined transmission frame.

32. The apparatus of claim 31, wherein a first frequency spectrum of the first signal is substantially distinct from a second frequency spectrum of the second signal.

33. The apparatus of claim 31, wherein the first frequency spectrum of the first signal comprises an ultra-wideband (UWB) spectrum.

34. The apparatus of claim 29, wherein the first portion of the defined transmission frame is situated within a preamble of the defined transmission frame.

35. The apparatus of claim 29, wherein the second portion of the defined transmission frame comprises a portion of the defined transmission frame remaining from the first portion.

36. The apparatus of claim 29, wherein the second portion of the defined transmission frame is situated within a preamble of the defined transmission frame.

37. The apparatus of claim 29, wherein the defined pseudo-random sequence of pulses comprises N pulses sent in a time hopping fashion.

38. The apparatus of claim 29, wherein the defined pseudo-random sequence of pulses comprises N pulses sent in a pulse position modulation fashion.

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

40. The apparatus of claim 30, 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.

41. The apparatus of claim 30, 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.

42. The apparatus of claim 30, wherein the transmitter is adapted to transmit the data payload within the second portion of the defined transmission frame.

43. A computer program product including a computer readable storage device comprising instructions executable by an apparatus to:

transmit a first signal to a remote apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the apparatus and the remote apparatus, and wherein the bursts of pulses are arranged in a defined pattern; and

not transmit the first signal during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined transmission frame.

44. A headset, comprising:

a transducer adapted to generate audio data; and

a transmitter adapted to;

transmit a first signal to a remote apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the headset and the remote apparatus, and wherein the bursts of pulses are arranged in a defined pattern;

not transmit the first signal during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined transmission frame; and

transmit the audio data as the data payload during the second portion of the defined transmission frame.

45. A user device, comprising:

a user interface adapted to generate data; and

a transmitter adapted to;

transmit a first signal to a remote apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the user device and the remote apparatus, and wherein the bursts of pulses are arranged in a defined pattern;

not transmit the first signal during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined transmission frame; and

transmit the data during the second portion of the defined transmission frame.

46. A sensing device, comprising:

a sensor adapted to generate data; and

a transmitter adapted to;

transmit a first signal to a remote apparatus, the first signal comprising a plurality of bursts of pulses during a first portion of a defined transmission frame, wherein each burst of pulses comprises a defined pseudo-random sequence of pulses, the pseudo-random sequence being known to the remote apparatus through the use of a seed shared between the sensing device and the remote apparatus, and wherein the bursts of pulses are arranged in a defined pattern;

not transmit the first signal during a second portion of the defined transmission frame, wherein the plurality of bursts of pulses are configured to allow the remote apparatus to identify the first and second portions of the defined transmission frame, and wherein the second portion is configured for including a data payload of the defined transmission frame; and

transmit the data during the second portion of the defined transmission frame.