Channel capacity adaptive repeater

• US 8,254,304 B2
• Filed: 12/10/2009
• Issued: 08/28/2012
• Est. Priority Date: 12/14/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Carmel, Yuval
• Primary Examiner(s): Han, Clemence
• Application Number:
  US12/635,594
• Publication Number:
  US 20100150166A1
• Time in Patent Office: 992 Days
• Field of Search: None
• US Class Current: 370/315
• CPC Class Codes: H04H 20/02 Arrangements for relaying broadcast information
• CPC Class Codes: H04H 20/423 Transmitter side
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for increasing data rate in a signal. In one aspect, a method includes receiving a mobile broadcast signal including inner code and outer code information; generating an adjusted mobile broadcast signal by adjusting a bit rate of the mobile broadcast signal through modifying at least one of: a modulation scheme associated with the mobile broadcast signal, the inner code information, and the outer code information; and transmitting the adjusted mobile broadcast signal.

Claims

1. A method performed by data processing apparatus, the method comprising:

receiving a mobile broadcast signal including inner code and outer code information;

generating an adjusted mobile broadcast signal by adjusting a bit rate of the mobile broadcast signal through modifying the outer code information by reducing outer code bits without modifying a modulation scheme associated with the mobile broadcast signal;

combining additional content with the adjusted mobile broadcast signal, wherein the additional content is inserted in bit space vacated by the modifying of the outer code information; and

transmitting the adjusted mobile broadcast signal combined with the additional content.

2. The method of claim 1, wherein transmitting the adjusted mobile broadcast signal occurs in a different frequency than a frequency associated with the received mobile broadcast signal.

3. The method of claim 1, wherein the combining the additional content with the adjusted mobile broadcast signal comprises multiplexing the additional content with the adjusted mobile broadcast signal.

4. The method of claim 1, further comprising modifying the inner code information.

5. The method of claim 4, wherein the modifying the inner code information comprises increasing a ratio of data bits to total bits transmitted.

6. The method of claim 5, wherein increasing the ratio of data bits to the total bits transmitted comprises reducing redundant inner code bits.

7. The method of claim 1, further comprising modifying the modulation scheme associated with the mobile broadcast signal by switching to a subcarrier modulation scheme supporting a higher bit rate.

8. The method of claim 7, wherein switching to the subcarrier modulation scheme includes switching from a QPSK subcarrier modulation scheme to a 16-QAM subcarrier modulation scheme.

9. The method of claim 1, wherein modifying the outer code information by reducing the outer code bits comprises increasing a ratio of data bits to the total bits transmitted.

10. The method of claim 1, wherein the mobile broadcast signal includes at least one of:

a wide area operational infrastructure signal, and

a local area operational infrastructure signal.

11. The method of claim 1, wherein transmitting the adjusted mobile broadcast signal occurs in an area smaller than an area associated with the received mobile broadcast signal.

12. A non-transitory computer storage medium encoded with a computer program, the program comprising instructions that when executed by data processing apparatus cause the data processing apparatus to perform operations comprising:

receiving a mobile digital broadcast signal including inner code and outer code information;

generating an adjusted mobile digital broadcast signal by adjusting a bit rate of the mobile digital broadcast signal through modifying the outer code information to increase a ratio of data bits to the total bits transmitted;

determining an amount of additional content that can be combined with the adjusted mobile broadcast signal based on the increased ratio of data bits to the total bits transmitted;

combining the determined amount of the additional content with the adjusted mobile digital broadcast signal; and

transmitting the adjusted mobile digital broadcast signal combined with the determined amount of the additional content.

13. The computer storage medium encoded with a computer program of claim 12, wherein transmitting the adjusted mobile digital broadcast signal occurs in a different frequency than a frequency associated with the received mobile digital broadcast signal.

14. The computer storage medium encoded with a computer program of claim 12, wherein the combining the determined amount of the additional content with the adjusted mobile digital broadcast signal further comprises multiplexing the additional content with the adjusted mobile digital broadcast signal.

15. The computer storage medium encoded with a computer program of claim 14, wherein the multiplexed additional content is inserted in bit space vacated by the modifying the outer code information.

16. The computer storage medium encoded with a computer program of claim 12, further comprising modifying a modulation scheme associated with the mobile digital broadcast signal by switching to a subcarrier modulation scheme supporting a higher bit rate.

17. The computer storage medium encoded with a computer program of claim 16, wherein switching to the subcarrier modulation scheme includes switching from a QPSK subcarrier modulation scheme to a 16-QAM subcarrier modulation scheme.

18. The computer storage medium encoded with a computer program of claim 12 further comprising modifying the inner code information to increase a ratio of data bits to total bits transmitted.

19. The computer storage medium encoded with a computer program of claim 18, wherein the modifying the inner code information to increase the ratio of data bits to the total bits transmitted comprises reducing redundant inner code bits.

20. The computer storage medium encoded with a computer program of claim 12, wherein the modifying the outer code information to increase the ratio of data bits to the total bits transmitted comprises reducing redundant outer code bits.

21. The computer storage medium encoded with a computer program of claim 12, wherein the mobile digital broadcast signal includes at least one of:

a wide area operational infrastructure signal, and

a local area operational infrastructure signal.

22. The computer storage medium encoded with a computer program of claim 12, wherein transmitting the adjusted digital mobile broadcast signal occurs in an area smaller than an area associated with the received mobile digital broadcast signal.

23. An electronic device for adjusting data rate in a digital signal, the electronic device comprising:

a receiver operable to receive a wide area broadcast signal including inner code and outer code information;

a processor operable to generate a local area signal by adjusting a bit rate of the wide area broadcast signal through modifying the outer code information to change a ratio of data bits to the total bits transmitted; and

a transmitter operable to transmit the local area broadcast signal.

24. The electronic device of claim 23, wherein the transmitter is further operable to transmit the local area broadcast signal at a different frequency than a frequency associated with the received wide area broadcast signal.

25. The electronic device of claim 23, further comprising a multiplexer operable to multiplex local content with the local area broadcast signal.

26. The electronic device of claim 25, wherein the multiplexed local content is inserted in bit space vacated by the modifying the outer code information.

27. The electronic device of claim 23 further comprising modifying a modulation scheme associated with the wide area broadcast signal by switching to a subcarrier modulation scheme supporting a higher bit rate.

28. The electronic device of claim 27, wherein switching to the subcarrier modulation scheme includes switching from a QPSK subcarrier modulation scheme to a 16 QAM subcarrier modulation scheme.

29. The electronic device of claim 23 further comprising modifying the inner code information to increase a ratio of data bits to total bits transmitted.

30. The electronic device of claim 29, wherein the modifying the inner code information to increase the ratio of data bits to the total bits transmitted comprises reducing redundant inner code bits.

31. The electronic device of claim 23, wherein modifying the outer code information to change the ratio of data bits to the total bits transmitted comprises reducing redundant outer code bits.

32. The electronic device of claim 23, wherein the wide area broadcast signal includes at least one of:

wide area operational infrastructure content, and

local area operational infrastructure content.

33. The electronic device of claim 23, wherein transmitting the wide area broadcast signal occurs in an area smaller than an area associated with the local area broadcast signal.

34. An apparatus for adjusting data rate in a digital signal, comprising:

means for receiving a wide area broadcast signal including inner code and outer code information;

means for generating a micro-venue broadcast signal by adjusting a bit rate of the wide area broadcast signal through means for modifying at least one of;

a modulation scheme associated with the wide area broadcast signal,

the inner code information, and

the outer code information;

means for determining an amount of additional content that can be combined with the micro-venue broadcast signal based on the adjusted bit rate of the wide area broadcast signal;

means for combining the determined amount of the additional content with the micro-venue broadcast signal; and

means for transmitting the micro-venue broadcast signal combined with the determined amount of the additional content.

35. The apparatus of claim 34, wherein the means for transmitting the micro-venue broadcast signal includes means for transmitting the micro-venue broadcast signal at a different frequency than a frequency associated with the received wide area broadcast signal.

36. The apparatus of claim 34, wherein the means for combining the determined amount of the additional content with the micro-venue broadcast signal further comprises means for multiplexing the determined amount of the additional content with the micro-venue broadcast signal.

37. The apparatus of claim 36, wherein the multiplexed additional content is inserted in bit space vacated by the means for modifying at least one of:

the inner code information, and

the outer code information.

38. The apparatus of claim 34, wherein the means for modifying the modulation scheme associated with the wide area broadcast signal includes means for switching to a subcarrier modulation scheme supporting a higher bit rate.

39. The apparatus of claim 38, wherein the means for switching to the modulation subcarrier modulation scheme includes switching from a QPSK subcarrier modulation scheme to a 16-QAM subcarrier modulation scheme.

40. The apparatus of claim 34, wherein modifying the inner code information comprises increasing a ratio of data bits to total bits transmitted.

41. The apparatus of claim 40, wherein increasing the ratio of data bits to the total bits transmitted comprises reducing redundant inner code bits.

42. The apparatus of claim 34, wherein modifying the outer code information comprises increasing a ratio of data bits to the total bits transmitted.

43. The apparatus of claim 42, wherein increasing the ratio of data bits to the total bits transmitted comprises reducing redundant outer code bits.

44. The apparatus of claim 34, wherein the wide area broadcast signal includes at least one of:

wide area operational infrastructure content, and

local area operational infrastructure content.

45. The apparatus of claim 34, wherein transmitting the micro-venue broadcast signal occurs in an area smaller than an area associated with the received wide area broadcast signal.

46. A system for increasing data rate in a mobile signal, the system comprising:

an electronic device, in communication with one or more communication devices, the electronic device including one or more processors configured to perform operations comprising;

receiving a local area broadcast signal including inner code and outer code data;

generating a micro-venue broadcast signal by adjusting a bit rate of the local area broadcast signal through modifying at least one of;

a modulation scheme associated with the local area broadcast signal,

the inner code information, and

the outer code information by changing a number of bits associated with the outer code information; and

transmitting the micro-venue broadcast signal to at least one of the one or more communication devices.

47. The system of claim 46, wherein transmitting the micro-venue broadcast signal to at least one of the one or more communication devices occurs in a different frequency than a frequency associated with the received local area broadcast signal.

48. The system of claim 46, wherein the operations further comprise determining an amount of additional content that can be combined with the micro-venue broadcast signal based on the changed number of bits associated with the outer code information and multiplexing the determined amount of the additional content with the micro-venue broadcast signal.

49. The system of claim 48, wherein the multiplexed local content is inserted in bit space vacated by the changing the number of bits associated with the outer code information.

50. The system of claim 46, wherein modifying the modulation scheme associated with the local area broadcast signal comprises switching to a subcarrier modulation scheme supporting a higher bit rate.

51. The system of claim 50, wherein switching to the subcarrier modulation scheme includes switching from a QPSK subcarrier modulation scheme to a 64 QAM subcarrier modulation scheme.

52. The system of claim 46, wherein modifying the inner code information comprises increasing a ratio of data bits to total bits transmitted.

53. The system of claim 52, wherein increasing the ratio of data bits to the total bits transmitted comprises reducing redundant inner code bits.

54. The system of claim 46, wherein changing the number of bits associated with the outer code information comprises increasing a ratio of data bits to the total bits transmitted.

55. The system of claim 54, wherein increasing the ratio of data bits to the total bits transmitted comprises reducing redundant outer code bits.

56. The system of claim 46, wherein the local area broadcast signal includes at least one of:

a wide area operational infrastructure signal, and

a local area operational infrastructure signal.

57. The system of claim 46, wherein transmitting the micro-venue broadcast signal occurs in an area smaller than an area associated with the received local area broadcast signal.