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All-Optical Unicast/Multicast Routing in WDM Networks
Sierra, Javier E.; Caro Pérez, Luis Fernando; Solano Donado, Fernando; Marzo i Lázaro, Josep Lluís; Fabregat Gesa, Ramon; Donoso Meisel, Yezid
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
Comunicacions òptiques
Multiplexatge per divisió de freqüència
Telecomunicació -- Tràfic
Optical communications
Telecommunication -- Traffic
Wavelength division multiplexing
Tots els drets reservats
Artículo
IEEE
         

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