IP Library › Granted Patent US 12,445,196
Granted Patent B2
US 12,445,196 · App. 18/256,031 · Granted Oct 14, 2025

Messaging channel in a coherent optical DSP frame

Inventors: Sebastien Gareau (Ottawa, CA); Timothy James Creasy (Manotick, CA)
Assignee: Ciena Corporation
H04B10/07H04B10/40H04B10/616H04J3/14H04L25/4908H04L49/9057H04J2203/006
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Quick Facts
Patent No.
US 12,445,196
App. No.
18/256,031
Granted
Oct 14, 2025
Kind
B2
Abstract

Systems and methods include receiving ( 102 ) a plurality of symbols that are part of a defined Digital Signal Processing (DSP) frame for coherent optical communication, wherein the DSP frame structure has a messaging channel incorporated therein that includes a subset of the plurality of symbols; capturing ( 104 ) multiple samples of the messaging channel; and determining ( 106 ) a message in the messaging channel based on analysis of the multiple samples. The method can further include transmitting ( 108 ), in the messaging channel, a reply to the message with the reply being repeated multiple times. The analysis is performed prior to Forward Error Correction (FEC) decoding on the data path.

Claims (30)

1. A coherent optical transmitter comprising circuitry configured to:

obtain information for a message to be transmitted to an adjacent coherent optical receiver,

modulate the information on a plurality of symbols that are part of a defined Digital Signal Processing (DSP) frame structure, and

cause transmission, to the adjacent coherent optical receiver, of the DSP frame with the information modulated on the plurality of symbols, wherein the transmission includes repeating the information for reception at the adjacent coherent optical receiver prior to Forward Error Correction decoding in a data path.

2. The coherent optical transmitter of claim 1 , wherein the plurality of symbols are one or more of reserved symbols, padding symbols, and undefined symbols in the DSP frame structure.

3. The coherent optical transmitter of claim 1 , wherein the repeating is via one or more of different polarizations, different DSP frames, and different symbols in a same DSP frame.

4. The coherent optical transmitter of claim 1 , wherein the transmission further includes utilizing any of parity and Cyclic Redundancy Check (CRC) for the plurality of symbols.

5. The coherent optical transmitter of claim 1 , wherein the transmission, to the adjacent coherent optical receiver, is configured for reception pre-Forward Error Correction.

6. The coherent optical transmitter of claim 1 , wherein the information relates to hardware details of the coherent optical transmitter.

7. The coherent optical transmitter of claim 1 , wherein the information relates to I/Q tributary mapping information.

8. A coherent optical receiver comprising circuitry configured to:

receive symbols of a defined Digital Signal Processing (DSP) frame structure from an adjacent coherent transmitter,

analyze a plurality of symbols of the received symbols, wherein the plurality of symbols includes repetition of the messages for prior to Forward Error Correction in a data path, and

determine a message from the adjacent coherent transmitter based on the analysis of the plurality of symbols.

9. The coherent optical receiver of claim 8 , wherein the plurality of symbols are one or more of reserved symbols, padding symbols, and undefined symbols in the DSP frame structure.

10. The coherent optical receiver of claim 8 , wherein the repetition is in one or more of different polarizations, different DSP frames, and different symbols in a same DSP frame.

11. The coherent optical receiver of claim 8 , wherein the plurality of symbols include any of parity and Cyclic Redundancy Check (CRC).

12. The coherent optical receiver of claim 8 , wherein the message is determined pre-Forward Error Correction.

13. The coherent optical receiver of claim 8 , wherein the information relates to hardware details of the coherent optical transmitter.

14. The coherent optical receiver of claim 8 , wherein the information relates to I/Q tributary mapping information.

15. A method comprising:

obtaining information for a message to be transmitted to an adjacent coherent optical receiver;

modulating the information on a plurality of symbols that are part of a defined Digital Signal Processing (DSP) frame structure; and

transmitting the DSP frame with the information modulated on the plurality of symbols, wherein the transmitting includes repeating the information for reception at the adjacent coherent optical receiver, prior to Forward Error Correction decoding in a data path.

16. The method of claim 15 , further comprising

receiving symbols of a defined Digital Signal Processing (DSP) frame structure from an adjacent coherent transmitter;

analyzing a second plurality of symbols of the symbols; and

determining a second message based on analyzing the second plurality of symbols.

17. The method of claim 15 , wherein the plurality of symbols and the second plurality of symbols are one or more of reserved symbols, padding symbols, and undefined symbols in the DSP frame structure.

18. The method of claim 15 , wherein the information relates to one or more of hardware details of the coherent optical transmitter and I/Q tributary mapping information.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 5, 2023
From: GAREAU, SEBASTIEN; CREASY, TIMOTHY JAMES
To: CIENA CORPORATION
Reel/Frame 063858/0746 →
Continuity (3)
Continuation 17383897 · Jul 23, 2021
Continuation 17117289 · Dec 10, 2020
Related Publication 20240048235A1 · Feb 8, 2024
References Cited (124)
US RE38619E · Paratore et al. · 2004 [cited by applicant]
US 6839858B1 · James et al. · 2005 [cited by applicant]
US 6868092B1 · Bell et al. · 2005 [cited by applicant]
US 6986097B1 · Ireland et al. · 2006 [cited by applicant]
US 7003708B1 · Ireland et al. · 2006 [cited by applicant]
US 7039854B1 · Ireland et al. · 2006 [cited by applicant]
US 7058876B1 · Ireland et al. · 2006 [cited by applicant]
US 7073117B1 · Ireland et al. · 2006 [cited by applicant]
US 7085281B2 · Thomas et al. · 2006 [cited by applicant]
US 7096408B1 · Ireland et al. · 2006 [cited by applicant]
US 7181545B2 · Dziawa et al. · 2007 [cited by applicant]
US 7835366B2 · Aweya et al. · 2010 [cited by applicant]
US 8306420B2 · Conklin et al. · 2012 [cited by applicant]
US 8331793B2 · Takeuchi et al. · 2012 [cited by applicant]
US 8356233B2 · Nichols et al. · 2013 [cited by applicant]
US 8370704B2 · Ganga et al. · 2013 [cited by applicant]
US 8458560B2 · Nichols · 2013 [cited by applicant]
US 8594018B2 · Richards et al. · 2013 [cited by applicant]
US 8630315B2 · Rivaud et al. · 2014 [cited by applicant]
US 8718471B2 · Prakash et al. · 2014 [cited by applicant]
US 8732358B2 · Nichols et al. · 2014 [cited by applicant]
US 8737389B2 · Chiesa et al. · 2014 [cited by applicant]
US 8830993B1 · Dublin et al. · 2014 [cited by applicant]
US 8848533B1 · Stuart et al. · 2014 [cited by applicant]
US 8867913B2 · Gareau et al. · 2014 [cited by applicant]
US 9264139B2 · Young et al. · 2016 [cited by applicant]
US 9432144B2 · Gareau et al. · 2016 [cited by applicant]
US 9825883B2 · Nichols et al. · 2017 [cited by applicant]
US 9980021B2 · Oltman et al. · 2018 [cited by applicant]
US 10014937B1 · Di Mola et al. · 2018 [cited by applicant]
US 10063336B1 · Moynihan et al. · 2018 [cited by applicant]
US 10097480B2 · Gareau et al. · 2018 [cited by applicant]
US 10135760B2 · Gareau · 2018 [cited by applicant]
US 10193688B2 · Gareau et al. · 2019 [cited by applicant]
US 10218823B2 · Gareau · 2019 [cited by applicant]
US 10225037B2 · Gareau · 2019 [cited by applicant]
US 10256909B2 · Gareau et al. · 2019 [cited by applicant]
US 10313103B1 · Perras et al. · 2019 [cited by applicant]
US 10382167B2 · Gareau et al. · 2019 [cited by applicant]
US 10396972B1 · Gareau et al. · 2019 [cited by applicant]
US 10397088B2 · Gareau · 2019 [cited by applicant]
US 10425177B2 · Gareau et al. · 2019 [cited by applicant]
US 10498476B2 · Gareau et al. · 2019 [cited by applicant]
US 10567352B2 · Gareau et al. · 2020 [cited by applicant]
US 10594395B2 · Abdullah et al. · 2020 [cited by applicant]
US 10673782B2 · Gareau et al. · 2020 [cited by applicant]
US 10750260B1 · Gareau · 2020 [cited by applicant]
US 10826600B2 · Ibach et al. · 2020 [cited by applicant]
US 10868662B2 · Gareau et al. · 2020 [cited by applicant]
US 11368229B2 · Hueda · 2022 [cited by examiner]
US 11387929B1 · Zhang · 2022 [cited by examiner]
US 11658737B2 · Gareau · 2023 [cited by examiner]
US 20040006645A1 · Dziawa et al. · 2004 [cited by applicant]
US 20050102419A1 · Popescu et al. · 2005 [cited by applicant]
US 20060007943A1 · Fellman · 2006 [cited by applicant]
US 20060109805A1 · Malamal Vadakital et al. · 2006 [cited by applicant]
US 20070071456A1 · Chen et al. · 2007 [cited by applicant]
US 20080069248A1 · Heise et al. · 2008 [cited by applicant]
US 20090060511A1 · Toyoshima · 2009 [cited by examiner]
US 20090297164A1 · Horiuchi · 2009 [cited by applicant]
US 20100042883A1 · Heise · 2010 [cited by applicant]
US 20100150243A1 · Kure et al. · 2010 [cited by applicant]
US 20100238836A1 · Diab et al. · 2010 [cited by applicant]
US 20110019681A1 · Gazier et al. · 2011 [cited by applicant]
US 20110252265A1 · Iwami et al. · 2011 [cited by applicant]
US 20110255546A1 · Pallee et al. · 2011 [cited by applicant]
US 20110274149A1 · Xu et al. · 2011 [cited by applicant]
US 20120213508A1 · Moynihan · 2012 [cited by applicant]
US 20120219005A1 · Durve et al. · 2012 [cited by applicant]
US 20120224846A1 · Swanson et al. · 2012 [cited by applicant]
US 20130045005A1 · Nakura et al. · 2013 [cited by applicant]
US 20130129345A1 · Meng et al. · 2013 [cited by applicant]
US 20130136218A1 · Kure et al. · 2013 [cited by applicant]
US 20130266312A1 · Prakash et al. · 2013 [cited by applicant]
US 20130272143A1 · Schoppmeier · 2013 [cited by applicant]
US 20130301634A1 · Ehlers et al. · 2013 [cited by applicant]
US 20130308349A1 · Young et al. · 2013 [cited by applicant]
US 20130308943A1 · Young et al. · 2013 [cited by applicant]
US 20140079409A1 · Ruffini et al. · 2014 [cited by applicant]
US 20140093235A1 · Gareau et al. · 2014 [cited by applicant]
US 20140177653A1 · Tzeng · 2014 [cited by applicant]
US 20140219651A1 · Ruffini et al. · 2014 [cited by applicant]
US 20140269778A1 · Yang et al. · 2014 [cited by applicant]
US 20140348184A1 · Kure · 2014 [cited by applicant]
US 20150055664A1 · Kanonakis et al. · 2015 [cited by applicant]
US 20160323164A1 · Cao · 2016 [cited by applicant]
US 20190190648A1 · Reimer et al. · 2019 [cited by applicant]
US 20190305854A1 · Campos et al. · 2019 [cited by applicant]
US 20200028585A1 · Abdullah et al. · 2020 [cited by applicant]
US 20200153529A1 · Su et al. · 2020 [cited by applicant]
US 20200177361A1 · Gareau et al. · 2020 [cited by applicant]
US 20200358722A1 · Gareau et al. · 2020 [cited by applicant]
US 20200396050A1 · Perras et al. · 2020 [cited by applicant]
US 20210119894A1 · DeAndrea et al. · 2021 [cited by applicant]
EP 0212701A1 · 1987 [cited by applicant]
EP 2983314A1 · 2016 [cited by applicant]
EP 2996270A1 · 2016 [cited by applicant]
Roberts, et al., “Flexible Transceivers,” ECOC Technical Digest, 2012 OSA, pp. 1-3. [cited by applicant]
Roberts, et al., “100G and Beyond with Digital Coherent Signal Processing,” IEEE Communications Magazine, Jul. 2010, pp. 62-69. [cited by applicant]
Garner, “IEEE 1588 Version 2,” ISPCS, Sep. 24, 2008, slides 1-89. [cited by applicant]
Gho, et al., “Rate-Adaptive Coding for Optical Fiber Transmission Systems,” Journal of Lightwave Technology, vol. 29, No. 2, Jan. 15, 2011, pp. 222-233. [cited by applicant]
ITU-T, Telecommunication Standardization Sector of ITU, “Precision time protocol telecom profile for frequency synchronization,” International Telecommunication, Jul. 2014, pp. 1-28. [cited by applicant]
Jan. 8, 2016 European Search Report for European Patent Application No. EP 15 18 2272. [cited by applicant]
Gustlin et al., “What is FlexEthernet?” Ethernet Technology Summit. [cited by applicant]
Vusirikala, “FlexEthernet (FlexE) Use Cases,” TEF: The Rate Debate. [cited by applicant]
Gustlin, “FlexEthernet—Protocols and Components,” XILINX All Programmable, Oct. 16, 2014. [cited by applicant]
OIF Optical Internetworking Forum, “FlexE Implementation Agreement—Draft 1.1,” Optical Internetworking Forum, Jul. 2015. [cited by applicant]
ITU, Telecommunication Standardization Sector of ITU, “Architecture of Ethernet layer networks,” International Telecommunication Union, Feb. 2004. [cited by applicant]
Stephen J. Trowbridge, Alcatel-Lucent USA, Mapping, of Flex Ethernet Clients over OTN, International Telecommunication Union, COM 15-C 1213-E, Study Period 2013-2016, vol. 11/15, Jun. 2015, pp. 1-7. [cited by applicant]
Marteen Vissers, Huawei Technologies Co., Ltd., Considerations on the mapping of FlexE Client and Subrate signals into OTN, International Telecommunication Union, COM 15-C 1195-E, Study Period 2013-2016, vol. 11/15, Jun… [cited by applicant]
OIF Optical Internetworking Forum, IA OIF-MLG-02.0, Multi-Link Gearbox Implementation Agreement, Apr. 2013, pp. 1-40. [cited by applicant]
European Search Report Issued in European Application EP 16177286, dated Oct. 21, 2016. [cited by applicant]
Aug. 6, 2018 European Search Report issued for International Application No. EP18176943. [cited by applicant]
Li Xueqiao et al., “Implementation and research of hardware time stamping techniques based on IEEE1588,” May 27, 2011, pp. 6-9. [cited by applicant]
Sluyski et al., OIF, Implementation Agreement 400ZR, OIF-400ZR-01.0, Mar. 10, 2020, pp. 1-100. [cited by applicant]
Sluyski, Open ROADM, Open ROADM MSA 3.01 W-Port Digital Specification (200G-400G), Open ROADM-Draft document, MSA_3.01 W-Port Digital Specification, Jun. 25, 2019, pp. 1-56. [cited by applicant]
Srivastava et al., Open ZR+ MSA, Technical Specification, version 1.0, Sep. 4, 2020, pp. 1-74. [cited by applicant]
ITU-T, Telecommunication Standardization Sector of ITU, Flexible OTN long-reach interfaces, G.709.3/Y.1331.3, Jun. 2018, pp. 1-34. [cited by applicant]
ITU-T, Telecommunication Standardization Sector of ITU, Flexible OTN long-reach interfaces, Amendment 1, G.709.3/Y.1331.3, Nov. 2018, pp. 1-74. [cited by applicant]
Mike A. Sluyski, “Open ROADM MSA 3.01 W-Port Digital Specification (200G-400G)”, Open ROADM—Draft document , Jun. 25, 2019, pp. 1-56. [cited by applicant]
Atul Srivastava et al.,, “Open ZR+ MSA”, Technical Specification, Version 1.0, Sep. 4, 2020, pp. 1-74. [cited by applicant]
Telecommunication Standardization Sector of ITU, ITU-T G.709.3/Y.1331.3, “Flexible OTN long-reach interfaces”, Jun. 2018, pp. 1-34. [cited by applicant]
Mike A. Sluyski et al., OIF, “Implementation Agreement 400ZR,” OIF-400ZR-01.0, Mar. 10, 2020, pp. 1-100. [cited by applicant]
Apr. 4, 2022, International Search Report for International Patent Application No. PCT/US2021/062597. [cited by applicant]