Light-trail based Hierarchy - The Optimal Multicast Route in WDM Networks Without Splitters and Converters

Dinh Danh Le, Massinissa Merabet

2014

Abstract

Multicasting in WDM core networks is known as an efficient way of communications in high-speed multimedia applications. However, costly and complicated fabrication prevents multicast capable switches (splitters) from deploying in the proposed architectures. Besides, in practical routing cases, the state of the network is given by a directed graph. Accordingly, this paper investigates the multicast routing without splitters in directed asymmetric topologies. The objective is to minimize the number of wavelengths used and then find the best cost solution among those requiring the same number of wavelengths. In the case of no splitters, a set of light-paths starting from the multicast source covering all the destinations is known as the traditional solution. In this paper, we introduce two new concepts namely light-trail based hierarchy and light-path based hierarchy, and develop two ILP formulations for them. Theoretical analysis and simulation results show that the optimal solution is a set of light-trail based hierarchies. Particularly, our light-trail based solution achieves fewer wavelengths required (up to 21.95% saved) while keeping slightly lower cost (up to 3.79% saved) compared to light-path based solution.

Paper Citation

in Harvard Style

Le D. and Merabet M. (2014). Light-trail based Hierarchy - The Optimal Multicast Route in WDM Networks Without Splitters and Converters . In Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-008-6, pages 66-73. DOI: 10.5220/0004705300660073

in Bibtex Style

@conference{photoptics14,
author={Dinh Danh Le and Massinissa Merabet},
title={Light-trail based Hierarchy - The Optimal Multicast Route in WDM Networks Without Splitters and Converters},
booktitle={Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2014},
pages={66-73},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004705300660073},
isbn={978-989-758-008-6},
}

in EndNote Style

TY - CONF
JO - Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Light-trail based Hierarchy - The Optimal Multicast Route in WDM Networks Without Splitters and Converters
SN - 978-989-758-008-6
AU - Le D.
AU - Merabet M.
PY - 2014
SP - 66
EP - 73
DO - 10.5220/0004705300660073