Apparatus and method for transmitting LAN signals over a transport system

• US 8,223,795 B2
• Filed: 02/25/2005
• Issued: 07/17/2012
• Est. Priority Date: 04/08/2002
• Status: Expired due to Term

• Current Assignee: Winterspring Digital LLC
• Original Assignee: Pivotal Decisions LLC (Intellectual Ventures LLC)
• Inventors: Cox, Jeffrey Lloyd, Sheth, Samir Satish
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): Javaid, Jamal
• Application Number:
  US11/066,374
• Publication Number:
  US 20060002419A1
• Time in Patent Office: 2,699 Days
• Field of Search: 370/445, 370/465, 370/46, 370/389, 370/392, 370/393, 370/394, 370/395, 370/467, 370/230, 370/400, 370/401, 370/350, 370/250, 370/423, 370/469, 370/539, 370/404, 359/152, 359/179, 359/143, 359/158, 359/173, 398/175, 398/25, 398/177, 398/58, 398/59, 398/66
• US Class Current: 370/466
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge

Abstract

A computer system and method for transmitting LAN signals over transport systems. LAN signals are generated in any client LAN compliant interface. A transceiver receives the client LAN signal in the LAN format. The client LAN signals are not converted to a SONET transmission format at any time before reaching the transceiver. The transceiver then converts the client LAN signal to an internal electrical LAN signal before re-clocking the internal electrical LAN signal. The re-clocked internal electrical LAN signal is then re-modulated into a second LAN signal. The second LAN signal is then transmitted to a transport system.

Claims

1. An optical communication system, comprising:

a first optical signal transceiver;

a second optical signal transceiver, wherein the first optical signal transceiver is configured to be communicatively coupled to the second optical signal transceiver via a plurality of optical transport systems arranged serially between the first optical signal transceiver and the second optical signal transceiver; and

one or more optical signal regenerators each connected between two of the plurality of optical transport systems, wherein a first optical signal regenerator of the one or more optical signal regenerators is configured to;

receive an optical signal in a LAN format from the first optical signal transceiver,

convert the received optical signal in the LAN format to an electrical signal in the LAN format,

recover corrupted data in the electrical signal using forward error correction data in the electrical signal in the LAN format,

add new forward error correction data to the recovered electrical signal in the LAN format,

regenerate the optical signal in the LAN format based on the electrical signal in the LAN format containing the new forward error correction data, and

transmit the regenerated optical signal in the LAN format to the second optical signal transceiver.

2. The optical communication system of claim 1, wherein the plurality of optical transport systems is further configured to transport one or more optical signals in the LAN format from the second optical signal transceiver to the first optical signal transceiver.

3. The optical communication system of claim 1, wherein the first optical signal transceiver is connected to a first end of a first optical transport system, wherein the first optical signal regenerator is connected to a second end of the first optical transport system, and wherein the first optical signal regenerator is connected to a first end of a second optical transport system.

4. The optical communication system of claim 3, wherein the second optical signal transceiver is connected to a second end of the second optical transport system.

5. The optical communication system of claim 3, wherein a second optical signal regenerator is connected to a second end of the second optical transport system, wherein the second optical signal regenerator is connected to a first end of a third optical transport system, and wherein the second optical signal transceiver is connected to a second end of the third optical transport system.

6. The optical communication system of claim 1, wherein the first optical signal transceiver is configured to receive the optical signal in the LAN format from a first client system.

7. The optical communication system of claim 6, wherein the first client system comprises one of the group consisting of a switch and a router.

8. The optical communication system of claim 6, wherein the second optical signal transceiver is configured to transmit the regenerated optical signal in the LAN format to a second client system.

9. The optical communication system of claim 8, wherein the second client system comprises one of the group consisting of a switch and a router.

10. A method of transporting optical signals in an optical communication system, the optical communication system comprising a first optical signal transceiver, a second optical signal transceiver, a plurality of optical transport systems arranged serially between the first optical signal transceiver and the second optical signal transceiver and configured to transport one or more optical signals in a LAN format from the first optical signal transceiver to the second optical signal transceiver, and one or more optical signal regenerators each connected between two of the plurality of optical transport systems, the method comprising:

receiving, at a first optical signal regenerator of the one or more optical signal regenerators, an optical signal in the LAN format from the first optical signal transceiver;

converting, at the first optical signal regenerator, the received optical signal in the LAN format to an electrical signal in the LAN format;

recovering, at the first optical signal regenerator, corrupted data in the electrical signal using forward error correction data in the electrical signal in the LAN format;

adding, at the first optical signal regenerator, new forward error correction data to the recovered electrical signal in the LAN format;

regenerating, at the first optical signal regenerator, the optical signal in the LAN format based on the electrical signal in the LAN format containing the new forward error correction data; and

transmitting the regenerated optical signal in the LAN format from the first optical signal regenerator to the second optical signal transceiver.

11. The method of claim 10, wherein the plurality of optical transport systems is further configured to transport one or more optical signals in the LAN format from the second optical signal transceiver to the first optical signal transceiver.

12. The method of claim 10, wherein the first optical signal transceiver is connected to a first end of a first optical transport system, wherein the first optical signal regenerator is connected to a second end of the first optical transport system, and wherein the first optical signal regenerator is connected to a first end of a second optical transport system.

13. The method of claim 12, wherein the second optical signal transceiver is connected to a second end of the second optical transport system.

14. The method of claim 12, wherein a second optical signal regenerator is connected to a second end of the second optical transport system, wherein the second optical signal regenerator is connected to a first end of a third optical transport system, and wherein the second optical signal transceiver is connected to a second end of the third optical transport system.

15. The method of claim 12, the method further comprising:

receiving, at the first optical signal transceiver, the optical signal in the LAN format from a first client system.

16. The method of claim 15, wherein the first client system comprises one of the group consisting of a switch and a router.

17. The method of claim 15, further comprising:

transmitting the regenerated optical signal in the LAN format from the second optical signal transceiver to a second client system.

18. The method of claim 17, wherein the second client system comprises one of the group consisting of a switch and a router.