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All-Optical Unicast/Multicast Routing in WDM Networks

Optical transport networks (OTN) must be prepared in terms of better resource utilization, for accommodating unicast and multicast traffic together. Light-trees have been proposed for supporting multicast connections in OTN. Nevertheless when traffic grooming is applied in light-trees, resources can be underutilized as traffic can be routed to undesirable destinations in order to avoid optical-electrical-optical (OEO) conversions. In this paper, a novel architecture named S/G light- tree for supporting unicast/multicast connections is proposed. The architecture allows traffic dropping and aggregation in different wavelengths without performing OEO conversions. A heuristic that routes traffic demands using less wavelengths by taking advantage of the proposed architecture is designed as well. Simulation results show that the architecture can minimize the number of used wavelengths and OEO conversions when compared to light-trees

IEEE

Author: Sierra, Javier E.
Caro Pérez, Luis Fernando
Solano Donado, Fernando
Marzo i Lázaro, Josep Lluís
Fabregat Gesa, Ramon
Donoso Meisel, Yezid
Abstract: Optical transport networks (OTN) must be prepared in terms of better resource utilization, for accommodating unicast and multicast traffic together. Light-trees have been proposed for supporting multicast connections in OTN. Nevertheless when traffic grooming is applied in light-trees, resources can be underutilized as traffic can be routed to undesirable destinations in order to avoid optical-electrical-optical (OEO) conversions. In this paper, a novel architecture named S/G light- tree for supporting unicast/multicast connections is proposed. The architecture allows traffic dropping and aggregation in different wavelengths without performing OEO conversions. A heuristic that routes traffic demands using less wavelengths by taking advantage of the proposed architecture is designed as well. Simulation results show that the architecture can minimize the number of used wavelengths and OEO conversions when compared to light-trees
Document access: http://hdl.handle.net/2072/63027
Language: eng
Publisher: IEEE
Rights: Tots els drets reservats
Subject: Comunicacions òptiques
Multiplexatge per divisió de freqüència
Telecomunicació -- Tràfic
Optical communications
Telecommunication -- Traffic
Wavelength division multiplexing
Title: All-Optical Unicast/Multicast Routing in WDM Networks
Type: info:eu-repo/semantics/article
Repository: Recercat

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