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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 Global Telecommunications Conference : 2008 : IEEE GLOBECOM 2008, 2008, p. 1-5

IEEE

Author: Sierra, Javier E.
Caro Pérez, Luis Fernando
Solano Donado, Fernando
Marzo i Lázaro, Josep Lluís
Fabregat Gesa, Ramon
Donoso Meisel, Yezid
Date: 2008
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
Format: application/pdf
Citation: Sierra, J.E., Caro, L.F., Solano, F., Marzo, J.L., Fabregat, R., i Donoso, Y. (2008). All-Optical Unicast/Multicast Routing in WDM Networks. IEEE Global Telecommunications Conference : 2008 : IEEE GLOBECOM 2008, p.1-5. Recuperat 01 maig 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4698268
ISBN: 978-1-4244-2324-8
ISSN: 1930-529X
Document access: http://hdl.handle.net/10256/2471
Language: eng
Publisher: IEEE
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.1109/GLOCOM.2008.ECP.493
Articles publicats (D-ATC)
Is part of: © IEEE Global Telecommunications Conference : 2008 : IEEE GLOBECOM 2008, 2008, p. 1-5
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: DUGiDocs

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