Multi-lane optical transport network recovery

• US 10,623,090 B2
• Filed: 05/24/2018
• Issued: 04/14/2020
• 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
• Primary Examiner(s): Sanchez, Dibson J
• Application Number:
  US15/988,377
• Publication Number:
  US 20190363787A1
• Time in Patent Office: 691 Days
• Field of Search: 398 9- 38, 398 43-103, 398135-139
• 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 a 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, 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 to the optical interruption event;

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

throttling bandwidth of the multi-lane optical path to below a bandwidth minimum threshold while maintaining connection along the multi-lane optical path by routing data through the plurality of optical lanes that do not correspond with the optical interruption event,

maintaining power to an optical transmitter corresponding to the optical lane that corresponds with the optical interruption event while not routing data through the optical lane corresponding with the optical interruption event so as to determine whether the optical interruption event is occurring due to the optical transmitter or due to the optical lane corresponding with the optical interruption event within the multi-lane optical path, and

routing power to a reserve optical transmitter to activate the reserve optical transmitter so as to provide optical transmission along a reserve optical lane using a wavelength that was associated with the optical lane corresponding with the optical interruption event.

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

3. 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.

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

5. 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.

6. The method of claim 1, wherein the optical protocol alarm comprises at least one of a description of the optical interruption event, an identifier of the multi-lane optical transceiver, an identifier of the optical lane corresponding to the optical interruption event, an amount of bandwidth provided by the optical lane corresponding to the optical interruption event, or an indication of whether the optical protocol message was generated in response to the optical interruption event.

7. The method of claim 1, further comprising providing the optical protocol alarm to a network management system.

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, 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 to the optical interruption event,

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

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

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

throttling bandwidth of the multi-lane optical path to below a bandwidth minimum threshold while maintaining connection along the multi-lane optical path by routing data through the plurality of optical lanes that do not correspond with the optical interruption event,

maintaining power to an optical transmitter corresponding to the optical lane that corresponds with the optical interruption event while not routing data through the optical lane corresponding with the optical interruption event so as to determine whether the optical interruption event is occurring due to the optical transmitter or due to the optical lane corresponding with the optical interruption event within the multi-lane optical path, and

routing power to a reserve optical transmitter to activate the reserve optical transmitter so as to provide optical transmission along a reserve optical lane using a wavelength that was associated with the optical lane corresponding with the optical interruption event.

9. 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 stored on the controller of the peer multi-lane optical transceiver.

10. 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.

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

12. 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.

13. The multi-lane optical transceiver of claim 8, wherein the optical protocol alarm comprises at least one of a description of the optical interruption event, an identifier of the multi-lane optical transceiver, an identifier of the optical lane corresponding to the optical interruption event, an amount of bandwidth provided by the optical lane corresponding to the optical interruption event, or an indication of whether the optical protocol message was generated in response to the optical interruption event.

14. The multi-lane optical transceiver of claim 8, wherein the operations further comprise providing the optical protocol alarm to a network management system.

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, 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 to the optical interruption event;

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

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

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

throttling bandwidth of the multi-lane optical path to below a bandwidth minimum threshold while maintaining connection along the multi-lane optical path by routing data through the plurality of optical lanes that do not correspond with the optical interruption event,

maintaining power to an optical transmitter corresponding to the optical lane associated that corresponds with the optical interruption event while not routing data through the optical lane corresponding with the optical interruption event so as to determine whether the optical interruption event is occurring due to the optical transmitter or due to the optical lane corresponding with the optical interruption event within the multi-lane optical path, and

routing power to a reserve optical transmitter to activate the reserve optical transmitter so as to provide optical transmission along a reserve optical lane using a wavelength that was associated with the optical lane corresponding with the optical interruption event.

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

17. 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.

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

19. The computer storage medium of claim 15, wherein the optical protocol alarm comprises at least one of a description of the optical interruption event, an identifier of the multi-lane optical transceiver, an identifier of the optical lane corresponding to the optical interruption event, an amount of bandwidth provided by the optical lane corresponding to the optical interruption event, or an indication of whether the optical protocol message was generated in response to the optical interruption event.

20. The computer storage medium of claim 15, wherein the operations further comprise providing the optical protocol alarm to a network management system.