Techniques for parameter reporting of elements in an optical transmission system using high loss loopback (HLLB) data and a line monitoring system implementing the same

Patent metadata

Field	Value
Publication number	US-10637565-B2
Application number	US-201916452817-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	Jan 12, 2018
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A system and method consistent with the present disclosure provides for automated line monitoring system (LMS) baselining that enables capturing and updating of operational parameters specific to each repeater and associated undersea elements based on high loss loopback (HLLB) data. The captured operational parameters may then be utilized to satisfy queries targeting specific undersea elements in a Command-Response (CR) fashion. Therefore, command-response functionality may be achieved without the added cost, complexity and lifespan issues related to deploying undersea elements with on-board CR circuitry. As generally referred to herein, operational parameters include any parameter that may be derived directly or indirectly from HLLB data. Some example non-limiting examples of operational parameters include span gain loss, input power, output power, gain, and gain tilt.

First claim

What is claimed is:

1. A line monitoring equipment (LME) comprising:
at least one controller operable to execute stored instructions, that when executed, cause the at least one controller to:
transmit one or more LME test signals on an optical transmission path;
receive LME loopback data in response to the transmitted one or more LME test signals, wherein the LME loopback data comprises a peak corresponding to a location of each high loss loopback (HLLB) path in the optical transmission path;
generate a plurality of operational parameters based on the LME loopback data, wherein each operational parameter corresponds to a repeater coupled to the optical transmission path and are stored in a table in a memory, the table associating each repeater with the corresponding operational parameter;
store the LME loopback data as a current baseline loopback data in the memory;
receive additional LME loopback data in response to one or more additional LME test signals transmitted on the optical transmission path;
compare the additional LME loopback data to the current baseline loopback data to identify any change in the plurality of operational parameters; and

a processor operable to execute stored instructions, that when executed, cause the processor to:
perform analysis on the LME loopback data; and
perform the identification of any change in the plurality of operational parameters based at least in part on the performed analysis on the LME loopback data.

2. The LME of claim 1 , wherein the at least one controller is further caused to send a reporting message to a remote computer, the reporting message including a representation of one or more operational parameters of the plurality of operational parameters associated with each of the selected repeaters.

3. The LME of claim 2 , wherein the reporting message is sent in response to the at least one controller receiving a Command-Response (CR) message from a user.

4. The LME of claim 3 , wherein the CR message includes at least one repeater identifier.

5. The LME of claim 1 , wherein the plurality of operational parameters includes one or more of the following: (i) an output power value, (ii) a gain value, and (iii) amplifier accumulated gain tilt value.

6. The LME of claim 1 , wherein the at least one controller is further caused to
update one or more operational parameters of the plurality of operational parameters based on the identified change.

7. The LME of claim 6 , wherein the updated one or more operational parameters is updated based on an output of an amplifier model.

8. The LME of claim 6 , wherein the at least one controller is further caused to send an alert message to a user based on the updated one or more operational parameters exceeding a predefined threshold.

9. The LME of claim 6 , further comprising wherein the processor is an automatic signature analysis (ASA) processor.

10. The LME of claim 1 , wherein the one or more LME test signals comprise a plurality of channel wavelengths, the plurality of channel wavelengths including (i) a low value corresponding to a minimum channel wavelength of a bandwidth associated with the optical transmission path and (ii) a high value corresponding with a maximum channel wavelength of the bandwidth associated with the optical transmission path.

11. A method comprising:
transmitting, via at least one controller, one or more LME test signals on an optical transmission path;
receiving, via the at least one controller, LME loopback data in response to the transmitted one or more LME test signals, wherein the LME loopback data comprises a peak corresponding to a location of each high loss loopback (HLLB) path in the optical transmission path;
generating, via the at least one controller, a plurality of operational parameters based on the LME loopback data, wherein each operational parameter corresponds to a repeater coupled to the optical transmission path and are stored in a table in a memory, the table associating each repeater with the corresponding operational parameter;
storing, via the at least one controller, the LME loopback data as a current baseline loopback data in the memory;
receiving, via the at least one controller, additional LME loopback data in response to one or more additional LME test signals transmitted on the optical transmission path;
comparing, via the at least one controller, the additional LME loopback data to the current baseline loopback data to identify any change in the plurality of operational parameters;
performing, via a processor, analysis on the LME loopback data; and
performing, via the processor, the identification of any change in the plurality of operational parameters based at least in part on the performed analysis on the LME loopback data.

12. The method of claim 11 , further comprising sending, via the at least one controller, a reporting message to a remote computer, the reporting message including a representation of one or more operational parameters of the plurality of operational parameters associated with each of the selected repeaters.

13. The method of claim 12 , wherein the reporting message is sent in response to the at least one controller receiving a Command-Response (CR) message from a user.

14. The method of claim 13 , wherein the CR message includes at least one repeater identifier.

15. The method of claim 14 , further comprising
updating, via the at least one controller, one or more operational parameters of the plurality of operational parameters based on the identified change.

16. The method of claim 15 , wherein the updated one or more operational parameters is updated based on an output of an amplifier model.

17. The method of claim 15 , further comprising sending, via the at least one controller, an alert message to a user based on the updated one or more operational parameters exceeding a predefined threshold.

18. The method of claim 15 , wherein the processor is
an automatic signature analysis (ASA) processor.

19. The method of claim 11 , wherein the plurality of operational parameters includes one or more of the following: (i) an output power value, (ii) a gain value, and (iii) amplifier accumulated gain tilt value.

20. The method of claim 11 , wherein the one or more LME test signals comprise a plurality of channel wavelengths, the plurality of channel wavelengths including (i) a low value corresponding to a minimum channel wavelength of a bandwidth associated with the optical transmission path and (ii) a high value corresponding with a maximum channel wavelength of the bandwidth associated with the optical transmission path.

Assignees

• Subcom Llc

Inventors

• Richardson Lee
• Mohs Georg Heinrich
• Xu Yunlu
• Kram Richard
• Garrett Lara Denise
• Liss Jonathan M
• Kovsh Dmitriy

Classifications

• H04B10/0777

  Monitoring line amplifier or line repeater equipment · CPC title

• H04B10/071 Primary

  using a reflected signal, e.g. using optical time domain reflectometers [OTDR] · CPC title

• H04B10/035 Primary

  using loopbacks · CPC title

• H04B10/29

  Repeaters · CPC title

• H04B10/0795

  Performance monitoring; Measurement of transmission parameters · CPC title