Title: A load balanced approach of multicast routing and wavelength assignment in WDM networks

Authors: Subhendu Barat; Ajit Pal; Tanmay De

Addresses: Department of Computer Science and Engineering, NSHM Knowledge Campus Durgapur Group of Institutions, Durgapur, India ' Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur, India ' Department of Computer Science and Engineering, National Institute of Technology, Durgapur, India

Abstract: Multicast routing and wavelength assignment (MRWA) deals with the problem of one-to-many communication in a wavelength division multiplexed optical fibre networks. As physical optical networks are equipped with finite number of optical channels in each fibre cable, throughput of the network is treated as a major performance issue. The aim of this work is to maximise throughput in a finite wavelength WDM network. As to establish multicast session a single message may need to split into multiple messages fanning out of a node, the node must contain costly splitters. This work also considers the cost of splitting at the split nodes while establishing a light-tree for a particular multicast session request. Here a load-balancing technique is used to optimise the optical channel requirements to establish a multicast connection. The algorithm proposed here is compared with standard all-shortest path algorithm combined with first-fit wavelength assignment for multicasting by simulation on various network topologies and different network configurations. The simulation result shows that our proposed algorithm performs much better than the standard one.

Keywords: wavelength division multiplexing; WDM networks; multicast routing; wavelength assignment; light tree; load balancing; throughput; splitting; optical fibre networks; simulation.

DOI: 10.1504/IJCNDS.2015.070259

International Journal of Communication Networks and Distributed Systems, 2015 Vol.15 No.1, pp.1 - 21

Received: 10 Oct 2013
Accepted: 07 Sep 2014
Published online: 01 Jul 2015 *

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