A study of lightpath rerouting schemes in wavelength-routed WDM networks

Xiaowen CHU*, Tianming Bu, Xiang Yang Li

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference contributionpeer-review

32 Citations (Scopus)

Abstract

Rerouting is a viable and cost-effective approach to decrease the blocking probability in legacy circuit-switched networks. We study lightpath rerouting in optical WDM networks in this paper. We investigate two different lightpath rerouting strategies, namely, passive rerouting and intentional rerouting. Passive rerouting means rerouting established lightpaths to accommodate new lightpath requests which will otherwise be blocked. Intentional rerouting is to intentionally reroute existing lightpaths during their life period without affecting other lightpaths, so as to achieve a better load balancing. Through extensive simulation studies, we draw the following conclusions: 1) when there is wavelength conversion, passive rerouting works much better than intentional rerouting; 2) when there is no wavelength conversion, a naive-wavelength- retuning algorithm can achieve the most benefit of passive rerouting while path-adjusting does not help too much.

Original languageEnglish
Title of host publication2007 IEEE International Conference on Communications, ICC'07
Pages2400-2405
Number of pages6
DOIs
Publication statusPublished - 2007
Event2007 IEEE International Conference on Communications, ICC'07 - Glasgow, Scotland, United Kingdom
Duration: 24 Jun 200728 Jun 2007

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Conference

Conference2007 IEEE International Conference on Communications, ICC'07
Country/TerritoryUnited Kingdom
CityGlasgow, Scotland
Period24/06/0728/06/07

Scopus Subject Areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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