Transmission Enhancements for Physical Layer Transmission

• US 20100086087A1
• Filed: 10/02/2008
• Published: 04/08/2010
• Est. Priority Date: 10/02/2008
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Vesma, Jussi, Pekonen, Harri, Jokela, Tero
• Application Number:
  US12/244,404
• Publication Number:
  US 20100086087A1
• Time in Patent Office: Days
• US Class Current: 375/346
• CPC Class Codes: H04L 1/004 by using forward error control H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/0079 Formats for control data H04L1/16 takes precedence; training sequences H04L25/00 and H04L27/00
• CPC Class Codes: H04L 1/0086 Unequal error protection H04L27/00 and H04L1/004 take precedence for layer 1/2 aspects, e.g. bit loading

Abstract

Aspects of the invention provide apparatuses, computer media, and methods for supporting the broadcast of signaling data over a network. Error detection and protection as well as modulation mechanisms enhance the flexibility and robustness of signaling data for digital video broadcasting. A first error detection code for a first portion of signaling data and a second error detection code for a second portion of the signaling data are determined. The signaling data is combined with data and transmitted as a digital stream through a digital terrestrial television broadcasting system. A portion of the signaling data may include a configurable part and a dynamic part or may include different dynamic parts of the signaling data. Different portions of the signaling data may be separately modulated and encoded. A portion of the signaling data may be divided over a plurality of code words and evenly distributed over a transmission period.

Claims

1. A method comprising:

receiving data symbols for transmission in a data frame;

generating signaling information that identifies transmission parameters for the data frame, wherein the signaling information includes a first signaling portion and a second signaling portion;

generating a first error detection code for the first signaling portion;

generating a second error detection code for the second signaling portion; and

assembling the data frame comprising the first signaling portion, the first error detection code, the second signaling portion, the second error detection code, and the data symbols.

2. The method of claim 1, further comprising:

transmitting the data frame through a digital broadcasting system, wherein the signaling information comprises physical layer signaling data.

3. The method of claim 2, wherein the first signaling portion comprises a static part and the second signaling portion comprises a dynamic part.

4. The method of claim 2, wherein the first signaling portion comprises a first dynamic part and the second signaling portion comprises a second dynamic part.

5. The method of claim 1, further comprising:

using different modulation schemes to modulate the first signaling portion and the second signaling portion.

6. The method of claim 1, further comprising:

separately encoding the first signaling portion and the second signaling portion.

7. The method of claim 1, further comprising:

dividing the first signaling portion into a plurality of code words.

8. The method of claim 7, further comprising:

evenly distributing the plurality of code words over a transmission period.

9. An apparatus comprising:

a memory; and

a processor configured to retrieve computer-executable instructions from the memory and to perform;

receiving data symbols for transmission in a data frame;

generating signaling information that identifies transmission parameters for the data frame, wherein the signaling information includes a first signaling portion and a second signaling portion;

generating a first error detection code for the first signaling portion;

generating a second error detection code for the second signaling portion; and

assembling the data frame comprising the first signaling portion, the first error detection code, the second signaling portion, the second error detection code, and the data symbols.

10. The apparatus of claim 9, further comprising:

a transmitter configured to transmit the data frame through a digital broadcasting system, wherein the signaling information comprises physical layer signaling data.

11. The apparatus of claim 10, wherein the first signaling portion comprises a static part and the second signaling portion comprises a dynamic part.

12. The apparatus of claim 10, wherein the first signaling portion comprises a first dynamic part and the second signaling portion comprises a second dynamic part.

13. The apparatus of claim 9, wherein the processor is further configured to:

use different modulation schemes to modulate the first signaling portion and the second signaling portion.

14. The apparatus of claim 9, wherein the processor is further configured to:

separately encode the first signaling portion and the second signaling portion.

15. The apparatus of claim 9, wherein the processor is further configured to:

divide the first signaling portion into a plurality of code words.

16. The apparatus of claim 15, wherein the processor is further configured to:

evenly distribute the plurality of code words over a transmission period.

17. A computer-readable medium having computer-executable instructions that when executed perform:

receiving data symbols for transmission in a data frame;

generating signaling information that identifies transmission parameters for the data frame, wherein the signaling information includes a first signaling portion and a second signaling portion;

generating a first error detection code for the first signaling portion;

generating a second error detection code for the second signaling portion; and

assembling the data frame comprising the first signaling portion, the first error detection code, the second signaling portion, the second error detection code, and the data symbols.

18. The computer-readable medium of claim 17, wherein the instructions further perform:

transmitting the data frame through a digital broadcasting system, wherein the signaling information comprises physical layer signaling data.

19. The computer-readable medium of claim 18, wherein the first signaling portion comprises a static part and the second signaling portion comprises a dynamic part.

20. The computer-readable medium of claim 18, wherein the first signaling portion comprises a first dynamic part and the second signaling portion comprises a second dynamic part.

21. The computer-readable medium of claim 17, wherein the instructions further perform:

using different modulation schemes to modulate the first signaling portion and the second signaling portion.

22. The computer-readable medium of claim 17, wherein the instructions further perform:

separately encoding the first signaling portion and the second signaling portion.

23. The computer-readable medium of claim 17, wherein the instructions further perform:

dividing the first signaling portion into a plurality of code words.

24. The computer-readable medium of claim 23, wherein the instructions further perform:

evenly distributing the plurality of code words over a transmission period.

25. A method comprising:

receiving a data frame, wherein the data frame contains signaling information that identifies transmission parameters for the data frame and wherein the signaling information includes a first signaling portion and a second signaling portion;

determining whether a first error has occurred for the first signaling portion from a first error detecting code and whether a second error has occurred for the second signaling portion from a second error detecting code;

when the first error has occurred, discarding the first portion of the signaling data and when the second error has occurred, discarding the second portion of the signaling data; and

extracting data symbols from the data frame.

26. The method of claim 25, further comprising:

receiving the data frame through a digital broadcasting system, wherein the signaling information comprises physical layer signaling data.

27. The method of claim 26, wherein the first signaling portion comprises a static part and the second signaling portion comprises a dynamic part.

28. The method of claim 26, wherein the first signaling portion comprises a first dynamic part and the second signaling portion comprises a second dynamic part.

29. The method of claim 25, further comprising:

separately demodulating the first signaling portion and the second signaling portion.

30. The method of claim 25, further comprising:

separately decoding the first signaling portion and the second signaling portion.

31. The method of claim 25, further comprising:

obtaining the first signaling portion from a plurality of code words.

32. An apparatus comprising:

a memory; and

a processor configured to retrieve computer-executable instructions from the memory and to perform;

receiving a data frame, wherein the data frame contains signaling information that identifies transmission parameters for the data frame and wherein the signaling information includes a first signaling portion and a second signaling portion;

determining whether a first error has occurred for the first signaling portion from a first error detecting code and whether a second error has occurred for the second signaling portion of from a second error detecting code;

when the first error has occurred, discarding the first portion of the signaling data and when the second error has occurred, discarding the second portion of the signaling data; and

extracting data symbols from the data frame.

33. The apparatus of claim 32, further comprising:

a communications interface configured to receive the data frame through a digital broadcasting system, wherein the signaling information comprises physical layer signaling data.

34. The apparatus of claim 33, wherein the first signaling portion comprises a static part and the second signaling portion comprises a dynamic part.

35. The apparatus of claim 33, wherein the first signaling portion comprises a first dynamic part and the second signaling portion comprises a second dynamic part.

36. The apparatus of claim 32, wherein the processor is further configured to:

separately demodulate the first signaling portion and the second signaling portion.

37. The apparatus of claim 32, wherein the processor is further configured to:

separately decode the first signaling portion and the second signaling portion.

38. The apparatus of claim 32, wherein the processor is further configured to:

obtain the first signaling portion from a plurality of code words.

39. A computer-readable medium having computer-executable instructions that when executed perform:

receiving a data frame, wherein the data frame contains signaling information that identifies transmission parameters for the data frame and wherein the signaling information includes a first signaling portion and a second signaling portion;

determining whether a first error has occurred for the first signaling portion from a first error detecting code and whether a second error has occurred for the second signaling portion from a second error detecting code;

when the first error has occurred, discarding the first portion of the signaling data and when the second error has occurred, discarding the second portion of the signaling data; and

extracting data symbols from the data frame.

40. The computer-readable medium of claim 39, wherein the instructions further perform:

receiving the data frame through a digital broadcasting system, wherein the signaling information comprises physical layer signaling data.

41. The computer-readable medium of claim 40, wherein the first signaling portion of the comprises a static part and the second signaling portion comprises a dynamic part.

42. The computer-readable medium of claim 40, wherein the first signaling portion comprises a first dynamic part and the second signaling portion comprises a second dynamic part.

43. The computer-readable medium of claim 39, wherein the instructions further perform:

separately demodulating the first signaling portion and the second signaling portion.

44. The computer-readable medium of claim 39, further comprising:

separately decoding the first signaling portion and the second signaling portion.

45. The computer-readable medium of claim 39, further comprising:

obtaining the first signaling portion from a plurality of code words.