Using Forward Error Correction with Generic Stream Encapsulation in a Digital Broadcast Network

• US 20080225892A1
• Filed: 03/15/2007
• Published: 09/18/2008
• Est. Priority Date: 03/15/2007
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Vesma, Jussi, Auranen, Tommi, Vare, Jani, Pekonen, Harri J.
• Application Number:
  US11/686,650
• Publication Number:
  US 20080225892A1
• Time in Patent Office: Days
• US Class Current: 370/473
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control

Abstract

Aspects of the invention are directed to using forward error correaction in a digital broadcast network that supports generic stream encapsulation. According to an embodiment, error correaction data is calculated over application data, and the application data and error correaction data are encapsulated in generic stream encapsulation packets. In another embodiment, error correaction data is calculated over generic stream encapsulation packets. In yet another embodiment, error correaction data is calculated over, and encapsulated within, generic stream encapsulation packets. In still another embodiment, error correaction data is calculated over application data packets.

Claims

1. A method comprising:

calculating error correaction data based on application data-carrying datagrams;

encapsulating the application data-carrying datagrams and the calculated error correaction data into generic stream encapsulation packets;

encapsulating the generic stream encapsulation packets into data stream protocol packets; and

scheduling the data stream packets into transmission frame slots.

2. The method of claim 1, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

3. The method of claim 1, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

4. A method comprising:

encapsulating application data-carrying datagrams into generic stream encapsulation packets;

calculating error correaction data based on the generic stream encapsulation packets;

encapsulating the generic stream encapsulation packets and the error correaction data into data stream protocol packets; and

scheduling the data stream protocol packets into transmission frame slots.

5. The method of claim 4, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

6. The method of claim 4, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

7. A method comprising:

encapsulating application data-carrying datagrams and error correaction data into generic stream encapsulation packets;

calculating additional error correaction data based on the generic stream encapsulation packets and making the additional error correaction data available for encapsulation into additional generic stream encapsulation packets;

encapsulating generic stream encapsulation packets into data stream protocol packets; and

scheduling the data stream protocol packets into transmission frame slots.

8. The method of claim 7, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

9. The method of claim 7, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

10. A method comprising:

calculating error correaction data based on application data-carrying datagrams;

encapsulating the application data-carrying datagrams into generic stream encapsulation packets;

encapsulating the generic stream encapsulation packets and the error correaction data into data stream encapsulation packets; and

scheduling the data stream encapsulation packets into slots of the transmission frames.

11. The method of claim 10, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

12. The method of claim 10, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

13. A method comprising:

receiving data stream protocol packets;

parsing the received data stream protocol packets;

parsing generic stream encapsulation packets encapsulated within the data stream protocol packets; and

if the generic stream encapsulation packets contain errors and/or are missing data, using error correaction data from the data stream protocol packets to correct the errors and/or replace the missing data.

14. The method of claim 13, further comprising:

parsing error correaction data encapsulated within the generic stream encapsulation packets.

15. The method of claim 13, wherein the error correaction data is Reed-Solomon data.

16. The method of claim 13, wherein the error correaction data is low density parity check data.

17. The method of claim 13, further comprising:

if the data stream protocol packets are missing generic stream encapsulation packets, using error correaction data from the generic stream encapsulation packets to replace the missing generic stream encapsulation packets

18. A system comprising:

a transmitter containing a generic stream encapsulation encapsulator, a forward error correaction encoder, and a data stream protocol encapsulator and configured to receive application data and to transmit data stream protocol packets; and

a receiver containing a data stream protocol decapsulator, a generic stream encapsulation decapsulator, and a forward error correaction decoder and configured to receive the transmitted data stream protocol packets.

19. The system of claim 18, wherein the data stream protocol packets contain error correaction data calculated by the forward error correcting encoder over application data.

20. The system of claim 18, wherein the data stream packets contain error correaction data calculated by the forward error correcting encoder over generic stream encapsulation packets.

21. The system of claim 18, wherein the data stream protocol packets contain generic stream encapsulation packets that encapsulate error correaction data.

22. The system of claim 18, wherein the data stream packets contain generic stream encapsulation packets and error correaction data calculated over application data packets.

23. An apparatus having a computer readable medium that contains computer executable instructions for causing the apparatus to perform operations comprising:

calculating error correaction data based on application data-carrying datagrams;

encapsulating the application data-carrying datagrams and the calculated error correaction data into generic stream encapsulation packets;

encapsulating generic stream encapsulation packets into data stream protocol packets; and

scheduling data stream packets into transmission frame slots.

24. The apparatus of claim 23, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

25. The apparatus of claim 23, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

26. An apparatus having a computer readable medium that contains computer executable instructions for causing the apparatus to perform operations comprising:

encapsulating application data-carrying datagrams into generic stream encapsulation packets;

calculating error correaction data based on the generic stream encapsulation packets;

encapsulating the generic stream encapsulation packets and the error correaction data into data stream protocol packets; and

scheduling the data stream protocol packets into transmission frame slots.

27. The apparatus of claim 26, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

28. The apparatus of claim 26, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

29. An apparatus having a computer readable medium that contains computer executable instructions for causing the apparatus to perform operations comprising:

encapsulating application data-carrying datagrams and error correaction data into generic stream encapsulation packets;

calculating additional error correaction data based on the generic stream encapsulation packets and making the additional error correaction data available for encapsulation into additional generic stream encapsulation packets;

encapsulating generic stream encapsulation packets into data stream protocol packets; and

scheduling the data stream protocol packets into transmission frame slots.

30. The apparatus of claim 29, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

31. The apparatus of claim 29, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

32. An apparatus having a computer readable medium that contains computer executable instructions for causing the apparatus to perform operations comprising:

calculating error correaction data based on application data-carrying datagrams;

encapsulating application data-carrying datagrams into generic stream encapsulation packets;

encapsulating the generic stream encapsulation packets and the error correaction data into data stream encapsulation packets; and

scheduling the data stream encapsulation packets into slots of the transmission frames.

33. The apparatus of claim 32, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is Reed-Solomon data.

34. The apparatus of claim 32, wherein the application data-carrying datagrams are Internet Protocol datagrams and the error correaction data is low density parity check data.

35. An apparatus having a computer readable medium that contains computer executable instructions for causing the apparatus to perform operations comprising:

receiving data stream protocol packets;

parsing the received data stream protocol packets;

parsing generic stream encapsulation packets encapsulated within the data stream protocol packets; and

if the generic stream encapsulation packets contain errors and/or are missing data, using error correaction data from the data stream protocol packets to correct the errors and/or replace the missing data.

36. The apparatus of claim 35, wherein the computer readable medium contains further computer executable instructions for causing the apparatus to perform operations comprising:

parsing error correaction data encapsulated within the generic stream encapsulation packets.

37. The apparatus of claim 35, wherein the error correaction data is Reed-Solomon data.

38. The apparatus of claim 35, wherein the error correaction data is low density parity check data.

39. The apparatus of claim 35, wherein the computer readable medium contains further computer executable instructions for causing the apparatus to perform operations comprising:

if the data stream protocol packets are missing generic stream encapsulation packets, using error correaction data from the generic stream encapsulation packets to replace the missing generic stream encapsulation packets