In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network
The demands of precise time/phase synchronization have been increasing recently due to the next generation of telecommunication synchronization. This paper studies the issues that are relevant to distributing accurate time/phase over optical transport network (OTN). Each node and link can introduce...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/408613 |
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| author | Sammy Siu Wen-Hung Tseng Hsiu-fang Hu Shinn-Yan Lin Chia-Shu Liao Yi-Liang Lai |
| author_facet | Sammy Siu Wen-Hung Tseng Hsiu-fang Hu Shinn-Yan Lin Chia-Shu Liao Yi-Liang Lai |
| author_sort | Sammy Siu |
| collection | DOAJ |
| description | The demands of precise time/phase synchronization have been increasing recently due to the next generation of telecommunication synchronization. This paper studies the issues that are relevant to distributing accurate time/phase over optical transport network (OTN). Each node and link can introduce asymmetry, which affects the adequate time/phase accuracy over the networks. In order to achieve better accuracy, protocol level full timing support is used (e.g., Telecom-Boundary clock). Due to chromatic dispersion, the use of different wavelengths consequently causes fiber link delay asymmetry. The analytical result indicates that it introduces significant time error (i.e., phase offset) within 0.3397 ns/km in C-band or 0.3943 ns/km in L-band depending on the wavelength spacing. With the proposed scheme in this paper, the fiber link delay asymmetry can be compensated relying on the estimated mean fiber link delay by the Telecom-Boundary clock, while the OTN control plane is responsible for processing the fiber link delay asymmetry to determine the asymmetry compensation in the timing chain. |
| format | Article |
| id | doaj-art-632de1ebb0ab4f56b2db637eb4d23abe |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-632de1ebb0ab4f56b2db637eb4d23abe2025-02-03T05:52:10ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/408613408613In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport NetworkSammy Siu0Wen-Hung Tseng1Hsiu-fang Hu2Shinn-Yan Lin3Chia-Shu Liao4Yi-Liang Lai5Telecommunication Laboratories, Chunghwa Telecom Co., Ltd., No. 99, Dianyan Road, Taoyuan County, Yangmei City 32601, TaiwanTelecommunication Laboratories, Chunghwa Telecom Co., Ltd., No. 99, Dianyan Road, Taoyuan County, Yangmei City 32601, TaiwanTelecommunication Laboratories, Chunghwa Telecom Co., Ltd., No. 99, Dianyan Road, Taoyuan County, Yangmei City 32601, TaiwanTelecommunication Laboratories, Chunghwa Telecom Co., Ltd., No. 99, Dianyan Road, Taoyuan County, Yangmei City 32601, TaiwanTelecommunication Laboratories, Chunghwa Telecom Co., Ltd., No. 99, Dianyan Road, Taoyuan County, Yangmei City 32601, TaiwanTelecommunication Laboratories, Chunghwa Telecom Co., Ltd., No. 99, Dianyan Road, Taoyuan County, Yangmei City 32601, TaiwanThe demands of precise time/phase synchronization have been increasing recently due to the next generation of telecommunication synchronization. This paper studies the issues that are relevant to distributing accurate time/phase over optical transport network (OTN). Each node and link can introduce asymmetry, which affects the adequate time/phase accuracy over the networks. In order to achieve better accuracy, protocol level full timing support is used (e.g., Telecom-Boundary clock). Due to chromatic dispersion, the use of different wavelengths consequently causes fiber link delay asymmetry. The analytical result indicates that it introduces significant time error (i.e., phase offset) within 0.3397 ns/km in C-band or 0.3943 ns/km in L-band depending on the wavelength spacing. With the proposed scheme in this paper, the fiber link delay asymmetry can be compensated relying on the estimated mean fiber link delay by the Telecom-Boundary clock, while the OTN control plane is responsible for processing the fiber link delay asymmetry to determine the asymmetry compensation in the timing chain.http://dx.doi.org/10.1155/2014/408613 |
| spellingShingle | Sammy Siu Wen-Hung Tseng Hsiu-fang Hu Shinn-Yan Lin Chia-Shu Liao Yi-Liang Lai In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network The Scientific World Journal |
| title | In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network |
| title_full | In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network |
| title_fullStr | In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network |
| title_full_unstemmed | In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network |
| title_short | In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network |
| title_sort | in band asymmetry compensation for accurate time phase transport over optical transport network |
| url | http://dx.doi.org/10.1155/2014/408613 |
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