Multi-Lane Optical Transport Network Recovery

• US 20190363787A1
• Filed: 05/24/2018
• Published: 11/28/2019
• Est. Priority Date: 05/24/2018
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Edwards, Andrew, Birk, Martin, Tse, Kathleen, Armiento, Gary
• Granted Patent: US 10,623,090 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 10/032 using working and protection systems H04J14/0287 takes precedence
• CPC Class Codes: H04B 10/038 using bypasses
• CPC Class Codes: H04B 10/0791 Fault location on the transmission path
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04J 14/0287 Protection in WDM systems
• CPC Class Codes: H04L 41/0661 by reconfiguring faulty entities
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 43/0847 Transmission error
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 45/243 using M+N parallel active paths
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering

Abstract

Concepts and technologies for multi-lane optical transport network recovery are provided herein. In an embodiment, a system includes multi-lane optical transceiver. The multi-lane optical transceiver can include a transmitter optical sub-assembly, a receiver optical sub-assembly, and a controller that includes a processor and a memory that stores computer-executable instructions that, in response to execution by the processor, cause the processor to perform operations. The operations can include detecting an optical interruption event corresponding to an optical lane within a multi-lane optical path. The operations can further include instantiating an optical protocol alarm based on the optical interruption event. The operations can further include generating an optical protocol message based on the optical protocol alarm. The operations can further include instructing a peer multi-lane optical transceiver to alter optical transmission along the multi-lane optical path based on the optical protocol message.

Claims

1. A method comprising:

detecting, by a multi-lane optical transceiver, an optical interruption event corresponding to an optical lane within a multi-lane optical path;

instantiating, by the multi-lane optical transceiver, an optical protocol alarm based on the optical interruption event;

generating, by the multi-lane optical transceiver, an optical protocol message based on the optical protocol alarm; and

instructing, by the multi-lane optical transceiver, a peer multi-lane optical transceiver to alter optical transmission along the multi-lane optical path, based on the optical protocol message, by

throttling bandwidth of the multi-lane optical path to below a bandwidth minimum threshold while maintaining connection along the multi-lane optical path, and

instructing the peer multi-lane optical transceiver to maintain power to an optical transmitter corresponding to the optical lane associated with the optical interruption event so as to determine whether the optical interruption event corresponds to the optical transmitter or corresponds to the optical lane within the multi-lane optical path.

2. The method of claim 1, wherein the multi-lane optical path comprises the optical lane corresponding to the optical interruption event and a plurality of optical lanes that do not correspond with the optical interruption event.

3. The method of claim 2, wherein the optical protocol message instructs the peer multi-lane optical transceiver to alter optical transmission by routing data through the plurality of optical lanes that do not correspond with the optical interruption event.

4. The method of claim 1, wherein the optical protocol message instructs the peer multi-lane optical transceiver to update a latency mapping on a controller communicatively coupled to the peer multi-lane optical transceiver.

5. The method of claim 1, wherein the detecting the optical interruption event includes determining that a data transmission via the optical lane is interrupted for at least a time period.

6. The method of claim 1, wherein the detecting the optical interruption event includes determining that a wavelength is not detected for the optical lane from the multi-lane optical path.

7. The method of claim 1, wherein the optical protocol message comprises an optical transmission command that alters a transmission configuration implemented by the peer multi-lane optical transceiver.

8. A multi-lane optical transceiver comprising:

a transmitter optical sub-assembly;

a receiver optical sub-assembly; and

a controller comprising a processor and a memory that stores computer-executable instructions that, in response to execution by the processor, cause the processor to perform operations comprising;

detecting an optical interruption event corresponding to an optical lane within a multi-lane optical path,

instantiating an optical protocol alarm based on the optical interruption event,

generating an optical protocol message based on the optical protocol alarm, and

instructing a peer multi-lane optical transceiver to alter optical transmission along the multi-lane optical path, based on the optical protocol message, by

throttling bandwidth of the multi-lane optical path to below a bandwidth minimum threshold while maintaining connection along the multi-lane optical path, and

instructing the peer multi-lane optical transceiver to maintain power to an optical transmitter corresponding to the optical lane associated with the optical interruption event so as to determine whether the optical interruption event corresponds to the optical transmitter or corresponds to the optical lane within the multi-lane optical path.

9. The multi-lane optical transceiver of claim 8, wherein the multi-lane optical path comprises the optical lane corresponding to the optical interruption event and a plurality of optical lanes that do not correspond with the optical interruption event.

10. The multi-lane optical transceiver of claim 9, wherein the optical protocol message instructs the peer multi-lane optical transceiver to alter optical transmission by routing data through the plurality of optical lanes that do not correspond with the optical interruption event.

11. The multi-lane optical transceiver of claim 8, wherein the optical protocol message instructs the peer multi-lane optical transceiver to update a latency mapping on the controller of the peer multi-lane optical transceiver.

12. The multi-lane optical transceiver of claim 8, wherein the detecting the optical interruption event includes determining that a data transmission via the optical lane is interrupted for at least a time period.

13. The multi-lane optical transceiver of claim 8, wherein the detecting the optical interruption event includes determining that a wavelength is not detected for the optical lane from the multi-lane optical path.

14. The multi-lane optical transceiver of claim 8, wherein the optical protocol message comprises an optical transmission command that alters a transmission configuration implemented by the peer multi-lane optical transceiver.

15. A computer storage medium having computer-executable instructions stored thereon that, in response to execution by a processor of a multi-lane optical transceiver, cause the processor to perform operations comprising:

detecting an optical interruption event corresponding to an optical lane within a multi-lane optical path;

instantiating an optical protocol alarm based on the optical interruption event;

generating an optical protocol message based on the optical protocol alarm; and

instructing a peer multi-lane optical transceiver to alter optical transmission along the multi-lane optical path, based on the optical protocol message, by

throttling bandwidth of the multi-lane optical path to below a bandwidth minimum threshold while maintaining connection along the multi-lane optical path, and

instructing the peer multi-lane optical transceiver to maintain power to an optical transmitter corresponding to the optical lane associated with the optical interruption event so as to determine whether the optical interruption event corresponds to the optical transmitter or corresponds to the optical lane within the multi-lane optical path.

16. The computer storage medium of claim 15, wherein the multi-lane optical path comprises the optical lane corresponding to the optical interruption event and a plurality of optical lanes that do not correspond with the optical interruption event.

17. The computer storage medium of claim 16, wherein the optical protocol message instructs the peer multi-lane optical transceiver to alter optical transmission by routing data through the plurality of optical lanes that do not correspond with the optical interruption event.

18. The computer storage medium of claim 15, wherein the optical protocol message instructs the peer multi-lane optical transceiver to update a latency mapping on a controller communicatively coupled to the peer multi-lane optical transceiver.

19. The computer storage medium of claim 15, wherein the detecting the optical interruption event includes determining that a data transmission via the optical lane is interrupted for at least a time period.

20. The computer storage medium of claim 15, wherein the detecting the optical interruption event includes determining that a wavelength is not detected for the optical lane from the multi-lane optical path.