Comparison of routing methods in optical multicast WDM ring networks

Comparison of routing methods in optical multicast WDM ring networks Multicast routing and wavelength assignment (MC-RWA) is an important issue when designing multicast WDM ring networks. Two heuristic multicast routing methods, minimum spanning tree (MST) and shortest path routing (SPT), have been studied extensively. However, the comparison of those two heuristics in terms of the number of required wavelengths is still an open issue because of the lack of efficient optimization methods for MC-RWA. In this paper, using a recently developed optimization algorithm, we compare the two multicast routing methods and optimal MC-RWA. The results show that SPT requires about 1–12% more wavelengths than MST. Moreover, the number of required wavelengths under MST routing is shown to be very close to that of the optimal solution. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Comparison of routing methods in optical multicast WDM ring networks

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Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer Science+Business Media, LLC
Subject
Computer Science; Electrical Engineering; Computer Communication Networks; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-011-0305-3
Publisher site
See Article on Publisher Site

Abstract

Multicast routing and wavelength assignment (MC-RWA) is an important issue when designing multicast WDM ring networks. Two heuristic multicast routing methods, minimum spanning tree (MST) and shortest path routing (SPT), have been studied extensively. However, the comparison of those two heuristics in terms of the number of required wavelengths is still an open issue because of the lack of efficient optimization methods for MC-RWA. In this paper, using a recently developed optimization algorithm, we compare the two multicast routing methods and optimal MC-RWA. The results show that SPT requires about 1–12% more wavelengths than MST. Moreover, the number of required wavelengths under MST routing is shown to be very close to that of the optimal solution.

Journal

Photonic Network CommunicationsSpringer Journals

Published: Mar 12, 2011

References

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