A simple and efficient RWA algorithm based on priority of edge disjoint paths

Soon Bin Yim, Min Young Chung, Hyunseung Choo, Tae Jin Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Routing and wavelength assignment (RWA) is an important issue in WDM optical transport networks. The objective is to find lightpaths for given demands with minimal use of wavelengths. It is typically solved using combination of linear programming and graph coloring, or heuristic path selection algorithms. Such methods are complex or yield sub-optimal paths. In this paper, we propose an efficient algorithm, RWA based on Priorities of Shortest Path (RPSP). The proposed algorithm utilizes the lengths of the shortest paths for the source-destination demand pairs and assigns disjoint lightpaths to the ordered demands. The computer simulation shows that our proposed algorithm indeed requires up to 34% fewer wavelengths with almost identical running time than the previously proposed effective BGAforEDP algorithm.

Original languageEnglish
Title of host publicationComputational Science and Its Applications - ICCSA 2006
Subtitle of host publicationInternational Conference, Proceedings - Part II
PublisherSpringer Verlag
Pages1121-1130
Number of pages10
ISBN (Print)3540340726, 9783540340720
DOIs
StatePublished - 2006
EventICCSA 2006: International Conference on Computational Science and Its Applications - Glasgow, United Kingdom
Duration: 8 May 200611 May 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3981 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

ConferenceICCSA 2006: International Conference on Computational Science and Its Applications
Country/TerritoryUnited Kingdom
CityGlasgow
Period8/05/0611/05/06

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