Title:
ROUTING AND WAVELENGTH ASSIGNMENT METHOD AND APPARATUS BASED ON ALL-OPTICAL WAVELENGTH CONVERSION
Document Type and Number:
WIPO Patent Application WO/2023/029127
Kind Code:
A1
Abstract:
Disclosed in the present invention is a routing and wavelength assignment method based on all-optical wavelength conversion. The method comprises the following steps: introducing an all-optical wavelength converter into a network; placing a corresponding number of all-optical wavelength converters in each network node according to a sparse wavelength converter placement principle; and establishing an optical channel for a service, wherein establishing an optical channel comprises the following steps: establishing an OSNR sensing routing and wavelength assignment algorithm model, wherein the OSNR sensing routing and wavelength assignment algorithm model comprises a transmission loss, ASE noise, and OSNR damage; calculating an OSNR of each route by using the OSNR sensing routing and wavelength assignment algorithm model; and establishing the optical channel by using the routing with the highest OSNR, so as to complete wavelength assignment. By means of the present invention, the cost of all-optical wavelength conversion and the effect of OSNR damage on the improvement of network performance can be reduced.
Inventors:
SHEN GANGXIANG (CN)
BU XINXIN (CN)
BU XINXIN (CN)
Application Number:
PCT/CN2021/120148
Publication Date:
March 09, 2023
Filing Date:
September 24, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
H04B10/50; H04Q11/00
Foreign References:
| US20170134089A1 | 2017-05-11 | |||
| US7218851B1 | 2007-05-15 | |||
| CN107948766A | 2018-04-20 | |||
| CN101217827A | 2008-07-09 |
Other References:
T. DE ; A.K. PATHAK ; A. PAL: "An efficient heuristic-based algorithm for wavelength converter placement in all-optical networks", TELECOMMUNICATIONS AND MALAYSIA INTERNATIONAL CONFERENCE ON COMMUNICATIONS, 2007. ICT-MICC 2007. IEEE INTERNATIONAL CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 14 May 2007 (2007-05-14), Piscataway, NJ, USA , pages 186 - 190, XP031228728, ISBN: 978-1-4244-1093-4
SHEN, GANGXIANG ET AL.: "Impairment-Aware Lightpath Routing and Regenerator Placement in Optical Transport Networks With Physical-Layer Heterogeneity", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 29, no. 18, 15 September 2011 (2011-09-15), XP011359077, DOI: 10.1109/JLT.2011.2162939
WU TAO, SUN JUNQIANG, LIU DEMING, HUANG DEXIU: "The Optimal Placement of Sparse Wavelength Converters in WDM Networks Based on Genetic Algorithms", HUAZHONG KEJI DAXUE XUEBAO (ZIRAN KEXUE BAN)/JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (NATURAL SCIENCE EDITION), HUAZHONG KEJI DAXUE, CN, vol. 29, no. 8, 31 August 2001 (2001-08-31), CN , pages 10 - 11+14, XP009544184, ISSN: 1671-4512, DOI: 10.13245/j.hust.2001.08.004
JI, LING: "Placement of Wavelength Converter in Wavelength-Routed All-Optical Networks Using Ant Colony System", JISUANJI-FANGZHEN = COMPUTER SIMULATION, ZHONGGUO HANGTIAN GONGYE ZONGGONGSI, CN, vol. 27, no. 1, 31 January 2010 (2010-01-31), CN , pages 202 - 205+270, XP009544185, ISSN: 1006-9348
SHEN, GANGXIANG ET AL.: "Impairment-Aware Lightpath Routing and Regenerator Placement in Optical Transport Networks With Physical-Layer Heterogeneity", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 29, no. 18, 15 September 2011 (2011-09-15), XP011359077, DOI: 10.1109/JLT.2011.2162939
WU TAO, SUN JUNQIANG, LIU DEMING, HUANG DEXIU: "The Optimal Placement of Sparse Wavelength Converters in WDM Networks Based on Genetic Algorithms", HUAZHONG KEJI DAXUE XUEBAO (ZIRAN KEXUE BAN)/JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (NATURAL SCIENCE EDITION), HUAZHONG KEJI DAXUE, CN, vol. 29, no. 8, 31 August 2001 (2001-08-31), CN , pages 10 - 11+14, XP009544184, ISSN: 1671-4512, DOI: 10.13245/j.hust.2001.08.004
JI, LING: "Placement of Wavelength Converter in Wavelength-Routed All-Optical Networks Using Ant Colony System", JISUANJI-FANGZHEN = COMPUTER SIMULATION, ZHONGGUO HANGTIAN GONGYE ZONGGONGSI, CN, vol. 27, no. 1, 31 January 2010 (2010-01-31), CN , pages 202 - 205+270, XP009544185, ISSN: 1006-9348
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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