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2009 Sixth International Conference on Broadband Communications, Networks, and Systems. Broadnets 2009 (2009)
Madrid
Sept. 14, 2009 to Sept. 16, 2009
ISSN: 2150-4903
ISBN: 978-963-9799-49-3
pp: 1-8
Cristina Cervello-Pastor , Department of Telematics Engineering, Universitat Politècnica de Catalunya (UPC), Esteve Terradas 7, 08860 Castelldefels, Spain
Joan Triay , Department of Telematics Engineering, Universitat Politècnica de Catalunya (UPC), Esteve Terradas 7, 08860 Castelldefels, Spain
Sebastia Sallent , Department of Telematics Engineering, Universitat Politècnica de Catalunya (UPC), Esteve Terradas 7, 08860 Castelldefels, Spain
ABSTRACT
The amount of bursty Internet traffic leads to develop new architectures and technologies, such as Optical Burst Switching (OBS), to efficiently satisfy future bandwidth requirements. Burst loss probability is an important quality of service metric for OBS due to its bufferless characteristic, even more critical without wavelengths converters. So, resource assignment is an important issue to solve in OBS networks. In this paper, two distributed resources assignment schemes without wavelength conversion capability are proposed. Whereas the first one is applied at the edge nodes to achieve a loss-free core network, the second is an enhanced routing and wavelength assignment scheme applied at core nodes. Simulation results indicate that the first scheme offers a loss-free solution with blocking probability only at ingress nodes and high traffic load. The second one reduces the network-wide burst loss probability significantly compared with other schemes.
INDEX TERMS
Internet, optical burst switching, optical fibre networks, resource allocation, telecommunication network routing, telecommunication traffic, wavelength assignment
CITATION

C. Cervello-Pastor, J. Triay and S. Sallent, "Distributed resources assignment for Optical Burst Switching without wavelength conversion (Invited Paper)," 2009 Sixth International Conference on Broadband Communications, Networks, and Systems. Broadnets 2009(BROADNETS), Madrid, 2009, pp. 1-8.
doi:10.4108/ICST.BROADNETS2009.7792
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