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Optimal Allocation of Fibre Delay Lines in Optical Burst Switched Networks

Authors:
Daniele Tafani
Conor McArdle
Liam Barry

Keywords: Optical Burst Switching, Fibre Delay Lines, Genetic Algorithms, Optimisation

Abstract:
The realisation of cost-efficient Optical Burst Switching (OBS) networks can be greatly facilitated from minimising the number of contention resolution resources required at congested network nodes. In this paper we present a Fibre Delay Line (FDL) optimal allocation scheme where the total cost associated to the employment of FDLs is minimised subject to performance requirements defined in terms of maximum tolerable end-to-end blocking probability. The optimal buffer configuration is achieved by means of a constraint-handling genetic algorithm. We additionally increase the accuracy of our analysis by considering the non-Poissonian traffic characteristics of the OBS network under study. Results show that our method permits to identify an optimal FDL configuration that minimises the total buffer installation cost and simultaneously satisfies the network blocking probability requirements.

Pages: 127 to 132

Copyright: Copyright (c) IARIA, 2012

Publication date: May 27, 2012

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-199-1

Location: Stuttgart, Germany

Dates: from May 27, 2012 to June 1, 2012