Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks

Akihiro KADOHATA; Atsushi WATANABE; Akira HIRANO; Hiroshi HASEGAWA; Ken-ichi SATO

doi:10.1587/transcom.E98.B.2014

Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks

Akihiro KADOHATA, Atsushi WATANABE, Akira HIRANO, Hiroshi HASEGAWA, Ken-ichi SATO

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We propose a new extension to reconfiguration algorithms used to address wavelength defragmentation to enhance the path accommodation efficiency in optical transparent wavelength division multiplexing networks. The proposed algorithm suppresses the number of fibers employed to search for a reconfigurable wavelength channel by combining routes between the target path and the existing path in a reconfigured wavelength channel. This paper targets three main phases in reconfiguration: i) the reconfiguration trigger; ii) redesign of the wavelength path; and iii) migrating the wavelength paths. The proposed and conventional algorithms are analyzed from the viewpoints of the number of fibers, accommodation rate and the number of migrating sequences. Numerical evaluations show that the number of fibers is suppressed by 9%, and that the accommodation efficiency is increased by approximately 5%-8% compared to when reconfiguration is not performed.

Publication: IEICE TRANSACTIONS on Communications Vol.E98-B No.10 pp.2014-2021

Publication Date: 2015/10/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E98.B.2014

Type of Manuscript: PAPER

Category: Fiber-Optic Transmission for Communications

Authors

Akihiro KADOHATA
  NTT Corporation
Atsushi WATANABE
  NTT Corporation
Akira HIRANO
  NTT Corporation
Hiroshi HASEGAWA
  Nagoya University
Ken-ichi SATO
  Nagoya University

Keyword

optical transparent wdm networks, reconfiguration, defragmentation

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Akihiro KADOHATA, Atsushi WATANABE, Akira HIRANO, Hiroshi HASEGAWA, Ken-ichi SATO, "Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks" in IEICE TRANSACTIONS on Communications, vol. E98-B, no. 10, pp. 2014-2021, October 2015, doi: 10.1587/transcom.E98.B.2014.
Abstract: We propose a new extension to reconfiguration algorithms used to address wavelength defragmentation to enhance the path accommodation efficiency in optical transparent wavelength division multiplexing networks. The proposed algorithm suppresses the number of fibers employed to search for a reconfigurable wavelength channel by combining routes between the target path and the existing path in a reconfigured wavelength channel. This paper targets three main phases in reconfiguration: i) the reconfiguration trigger; ii) redesign of the wavelength path; and iii) migrating the wavelength paths. The proposed and conventional algorithms are analyzed from the viewpoints of the number of fibers, accommodation rate and the number of migrating sequences. Numerical evaluations show that the number of fibers is suppressed by 9%, and that the accommodation efficiency is increased by approximately 5%-8% compared to when reconfiguration is not performed.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.2014/_p

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@ARTICLE{e98-b_10_2014,
author={Akihiro KADOHATA, Atsushi WATANABE, Akira HIRANO, Hiroshi HASEGAWA, Ken-ichi SATO, },
journal={IEICE TRANSACTIONS on Communications},
title={Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks},
year={2015},
volume={E98-B},
number={10},
pages={2014-2021},
abstract={We propose a new extension to reconfiguration algorithms used to address wavelength defragmentation to enhance the path accommodation efficiency in optical transparent wavelength division multiplexing networks. The proposed algorithm suppresses the number of fibers employed to search for a reconfigurable wavelength channel by combining routes between the target path and the existing path in a reconfigured wavelength channel. This paper targets three main phases in reconfiguration: i) the reconfiguration trigger; ii) redesign of the wavelength path; and iii) migrating the wavelength paths. The proposed and conventional algorithms are analyzed from the viewpoints of the number of fibers, accommodation rate and the number of migrating sequences. Numerical evaluations show that the number of fibers is suppressed by 9%, and that the accommodation efficiency is increased by approximately 5%-8% compared to when reconfiguration is not performed.},
keywords={},
doi={10.1587/transcom.E98.B.2014},
ISSN={1745-1345},
month={October},}

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TY - JOUR
TI - Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 2014
EP - 2021
AU - Akihiro KADOHATA
AU - Atsushi WATANABE
AU - Akira HIRANO
AU - Hiroshi HASEGAWA
AU - Ken-ichi SATO
PY - 2015
DO - 10.1587/transcom.E98.B.2014
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2015
AB - We propose a new extension to reconfiguration algorithms used to address wavelength defragmentation to enhance the path accommodation efficiency in optical transparent wavelength division multiplexing networks. The proposed algorithm suppresses the number of fibers employed to search for a reconfigurable wavelength channel by combining routes between the target path and the existing path in a reconfigured wavelength channel. This paper targets three main phases in reconfiguration: i) the reconfiguration trigger; ii) redesign of the wavelength path; and iii) migrating the wavelength paths. The proposed and conventional algorithms are analyzed from the viewpoints of the number of fibers, accommodation rate and the number of migrating sequences. Numerical evaluations show that the number of fibers is suppressed by 9%, and that the accommodation efficiency is increased by approximately 5%-8% compared to when reconfiguration is not performed.
ER -