Methods, systems and computer program products for error correction by retransmitting errored packets over a data link

• US 20060133355A1
• Filed: 11/08/2005
• Published: 06/22/2006
• Est. Priority Date: 12/22/2004
• Status: Abandoned Application

• Current Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Original Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Inventors: Anschutz, Thomas
• Application Number:
  US11/269,286
• Publication Number:
  US 20060133355A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/56 Packet switching systems

Abstract

Methods, systems and computer program products are provided for providing error correction in a communication network. A frame including a retransmission class of service indication in associated network layer forwarding information is received. It is determined if the received frame has been corrupted. Retransmission of the received frame is requested if it is determined that it the received framed has been corrupted. An uncorrupted version of the received frame is retransmitted responsive to the retransmission request, over a data link.

Claims

1. A method of providing error correction in a communication network, comprising:

receiving a frame including a retransmission class of service indication in associated network layer forwarding information;

determining if the received frame has been corrupted;

requesting retransmission of the received frame if it is determined that it the received framed has been corrupted; and

receiving an uncorrupted version of the received frame, responsive to the retransmission request, over a data link.

2. The method of claim 1, wherein receiving a frame is preceded by:

storing at least one frame including the retransmission class of service indication in a dedicated buffer or queue and wherein the method further comprising;

selecting the at least one frame stored in the dedicated buffer or queue to be transmitted; and

transmitting the selected at least one frame over the data link.

3. The method of claim 2, wherein requesting retransmission is followed by retransmitting the received frame over the data link responsive to the retransmission request.

4. The method of claim 3, wherein selecting, transmitting and retransmitting are performed by a transmitting modem and receiving a frame, determining, requesting and receiving an uncorrupted frame are performed by a receiving modem.

5. The method of claim 1, wherein the network layer forwarding information comprises a packet marking and/or a virtual circuit label.

6. The method of claim 5, wherein the network layer forwarding information is assigned by a ADSL transceiver unit or a VDSL transceiver unit.

7. The method of claim 1, wherein the retransmission class of service is associated with video data for use in internet protocol television (IPTV) applications.

8. A system for providing error correction in a communication network, comprising:

a receiving modem configured to;

receive a frame including a retransmission class of service indication in associated network layer forwarding information;

determine if the received frame has been corrupted;

request retransmission of the received frame if it is determined that it the received framed has been corrupted; and

receive an uncorrupted version of the received frame, responsive to the retransmission request, over a data link.

9. The system of claim 8, further comprising:

a dedicated queue and/or buffer configured to store at least one frame including the retransmission class of service indication.

10. The system of claim 9, further comprising:

a transmitting modem configured to;

select the at least one frame stored in the dedicated buffer or queue to be transmitted; and

transmit the selected at least one frame over the data link.

11. The system of claim 10, wherein the transmitting modem is further configured to retransmit the received frame over the data link responsive to the retransmission request.

12. The system of claim 8, wherein the network layer forwarding information comprises a packet marking and/or a virtual circuit label.

13. The system of claim 12, wherein the network layer forwarding information is assigned by a ADSL transceiver unit or a VDSL transceiver unit.

14. The system of claim 8, wherein the retransmission class of service is associated with video data for use in internet protocol television (IPTV) applications.

15. A computer program product for providing error correction in a communication network, the computer program product comprising:

a computer readable storage medium having computer readable program code embodied therein, the computer readable program code comprising;

computer readable program code configured to receive a frame including a retransmission class of service indication in associated network layer forwarding information;

computer readable program code configured to determine if the received frame has been corrupted;

computer readable program code configured to request retransmission of the received frame if it is determined that it the received framed has been corrupted; and

computer readable program code configured to receive an uncorrupted version of the received frame, responsive to the retransmission request, over a data link.

16. The computer program product of claim 15, further comprising:

computer readable program code configured to store at least one frame including the retransmission class of service indication in a dedicated buffer or queue;

computer readable program code configured to select the at least one frame stored in the dedicated buffer or queue to be transmitted; and

computer readable program code configured to transmit the selected at least one frame over the data link.

17. The computer program product of claim 16, further comprising computer readable program code configured to retransmit the received frame over the data link responsive to the retransmission request.

18. The computer program product of claim 15, wherein the network layer forwarding information comprises a packet marking and/or a virtual circuit label.

19. The computer program product of claim 18, wherein the network layer forwarding information is assigned by a ADSL transceiver unit or a VDSL transceiver unit.

20. The computer program product of claim 15, wherein the retransmission class of service is associated with video data for use in internet protocol television (IPTV) applications.