Method of transmitting data to reduce bit errors in communication systems

• US 20040240464A1
• Filed: 05/30/2003
• Published: 12/02/2004
• Est. Priority Date: 05/30/2003
• Status: Abandoned Application

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Fite, Wayne Charles
• Application Number:
  US10/448,126
• Publication Number:
  US 20040240464A1
• Time in Patent Office: Days
• US Class Current: 370/438
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

A method of transmitting data so as to avoid bit errors in a communication system is described. In the method, overhead data of a data packet may be apportioned to a first set of bins, and payload data in the data packet may be apportioned to a second set of bins. The first set of bins may be transmitted over an overhead channel, and the second set of bins may be transmitted in a payload channel. In order to reduce bit errors in the payload, the first set of bins may be assigned a first signal to noise ratio (SNR) margin that exceeds a second SNR margin assigned to the second set of bins. Alternatively, additional forward error correction bytes may be assigned to the overhead channel, so that any errors cause only a payload bit to be corrupted, instead of an entire packet or cell.

Claims

1. A method of transmitting data in a communication system, comprising:

transmitting overhead data and payload data over separate channels.

2. The method of claim 1, wherein said transmitting includes transmitting said overhead data in an overhead channel and said payload data in a payload channel.

3. The method of claim 2, further comprising:

assigning additional forward error correction bytes to said overhead channel.

4. The method of claim 1, further comprising:

apportioning said overhead data to a first set of bins and said payload data to a second set of bins.

5. The method of claim 4, wherein said transmitting includes transmitting said first set of bins in an overhead channel and said second set of bins in a payload channel.

6. The method of claim 4, wherein said first set of bins and said second set of bins are Discrete Multi-tone Modulation (DMT) bins.

7. The method of claim 4, further comprising:

assigning said first set of bins a first signal to noise ratio (SNR) margin and said second set of bins a second SNR margin.

8. The method of claim 7, wherein said first SNR margin exceeds said second SNR margin.

9. The method of claim 8, wherein said transmitting includes transmitting said first set of bins in an overhead channel and said second set of bins in a payload channel.

10. The method of claim 1, wherein said communication system is an Asymmetric Digital Subscriber Line (ADSL) system.

11. The method of claim 1, wherein said communication system is at least one of a packet switched data network (PSDN) and an xDSL system.

12. A method of reducing bit errors when transmitting a data packet in a communication system, comprising:

apportioning overhead data in said data packet to a first set of bins and payload data in said data packet to a second set of bins; and

transmitting said first set of bins in an overhead channel and said second set of bins in a payload channel.

13. The method of claim 12, further comprising:

assigning said first set of bins a first signal to noise ratio (SNR) margin and said second set of bins a second SNR margin.

14. The method of claim 13, wherein said first SNR margin exceeds said second SNR margin.

15. The method of claim 12, wherein said communication system is an Asymmetric Digital Subscriber Line (ADSL) system.

16. The method of claim 12, wherein said communication system is at least one of a packet switched data network (PSDN) and an xDSL system.

17. A method of configuring a data packet for transmission with reduced bit errors in a communication system, comprising:

apportioning overhead data in said data packet to a first set of bins and payload data in said data packet to a second set of bins, said first set of bins to be transmitted in an overhead channel and said second set of bins to be transmitted in a separate payload channel, and

assigning additional forward error correction bytes to said overhead channel.

18. The method of claim 17, wherein said communication system is an Asymmetric Digital Subscriber Line (ADSL) system.

19. The method of claim 17, wherein said communication system is at least one of a packet switched data network (PSDN) and an xDSL system.