METHODS AND APPARATUS FOR ADAPTIVE ERROR CORRECTION IN NETWORKS

• US 20100142522A1
• Filed: 12/04/2008
• Published: 06/10/2010
• Est. Priority Date: 12/04/2008
• Status: Abandoned Application

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Gardner, James
• Application Number:
  US12/328,611
• Publication Number:
  US 20100142522A1
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 69/26 Special purpose or proprietary protocols or architectures network applications for proprietary or special purpose networking environments H04L67/12
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

Methods and apparatus for adaptive error correction in networks are described. Some example methods to transmit data in a network include generating a first number of redundant data packets from a data file at a first location, wherein any first subset of the generated data packets is sufficient to reconstruct the data file. The example methods further include obtaining a variable representative of network conditions associated with a network configured to carry the data packets to a second location, and transmitting a second subset of the data packets based on the variable, wherein the number of packets of the second subset is at least as large as the first subset.

Claims

1. A method to transmit data in a network, comprising:

generating a first number of redundant data packets from a data file at a first location, wherein a first subset of the generated data packets may be used to reconstruct the data file;

obtaining a variable representative of network conditions associated with a network configured to carry the data packets to a second location; and

transmitting a second subset of the generated data packets based on the variable, wherein the number of packets of the second subset is greater than or equal to a number of data packets in the first subset.

2. A method as defined in claim 1, wherein the number of packets of the second subset is less than or equal to the first number of generated data packets.

3. A method as defined in claim 1, wherein obtaining the variable representative of the network conditions comprises obtaining at least one of packet loss data or packet delay data.

4. A method as defined in claim 1, wherein transmitting the second subset of data packets comprises determining a number of data packets that are likely to be lost or delayed based on the variable representative of network conditions.

5. A method as defined in claim 1, further comprising determining the first number and the first subset based on at least one of a size of the data file, the network conditions, a minimum data packet size, or a maximum data packet size.

6. A method as defined in claim 1, wherein the second subset of data packets contains a minimum number of data packets plus a number of data packets that are expected to be lost or delayed.

7. A method as defined in claim 1, wherein the network conditions comprise at least one of historical network conditions, current network conditions, or predicted network conditions.

8. An apparatus to transmit data in a network, comprising:

a packet generator to generate a first number of redundant data packets from a data file at a first location, wherein a first subset of the generated data packets are sufficient to reconstruct the data file;

a network monitor to obtain a variable representative of network conditions associated with a network configured to carry the data packets to a second location; and

a packet transmitter to transmit a second subset of the generated data packets based on the variable, wherein the second subset is at least as large as the first subset.

9. An apparatus as defined in claim 8, wherein a number of packets of the second subset is less than or equal to the first number of generated data packets.

10. An apparatus as defined in claim 8, wherein the variable representative of the network conditions represents at least one of packet loss data or packet delay data.

11. An apparatus as defined in claim 8, wherein transmitting the second subset of data packets comprises determining a number of data packets that are likely to be lost or delayed based on the variable representative of network conditions.

12. An apparatus as defined in claim 8, wherein the packet generator further determines the first number and the first subset based on at least one of a size of the data file, the network conditions, a minimum data packet size, or a maximum data packet size.

13. An apparatus as defined in claim 8, wherein the second subset of data packets comprises a minimum number of data packets to reconstruct the data file and a buffer number of data packets that are expected to be lost or delayed.

14. An article of manufacture comprising machine readable instructions, which, when executed, cause a machine to:

generate a first number of redundant data packets from a data file at a first location, wherein a first subset of the generated data packets are sufficient to reconstruct the data file;

obtain a variable representative of network conditions associated with a network configured to carry the data packets to a second location; and

transmit a second subset of the generated data packets based on the variable, wherein the second subset is at least as large as the first subset.

15. An article of manufacture as defined in claim 14, wherein the number of packets of the second subset is less than or equal to the first number of generated data packets.

16. An article of manufacture as defined in claim 14, wherein obtaining the variable representative of the network conditions comprises obtaining at least one of packet loss data or packet delay data.

17. An article of manufacture as defined in claim 14, wherein transmitting the second subset of data packets comprises determining a number of data packets that are likely to be lost or delayed based on the variable representative of network conditions.

18. An article of manufacture as defined in claim 14, wherein the machine readable instructions further cause the machine to determine the first number and the first subset based on at least one of a size of the data file, the network conditions, a minimum data packet size, or a maximum data packet size.

19. An article of manufacture as defined in claim 14, wherein the network conditions comprise at least one of historical network conditions, current network conditions, or predicted network conditions.

20. An article of manufacture as defined in claim 14, wherein the second subset of data packets comprises the minimum number of data packets to reconstruct the data file and a buffer number of data packets that are expected to be lost or delayed.