Research Article
Distributed resources assignment for Optical Burst Switching without wavelength conversion (Invited Paper)
@INPROCEEDINGS{10.4108/ICST.BROADNETS2009.7792, author={Cristina CerveI\^{o}-Pastor and Joan Triay and Sebasti\'{a} SalIent}, title={Distributed resources assignment for Optical Burst Switching without wavelength conversion (Invited Paper)}, proceedings={2nd International ICSTl Workshop on Optical Burst/Packet Switching}, publisher={IEEE}, proceedings_a={WOBS}, year={2009}, month={11}, keywords={Bandwidth Internet Optical buffering Optical burst switching Optical losses Optical wavelength conversion Quality of service Telecommunication traffic Wavelength assignment Wavelength routing}, doi={10.4108/ICST.BROADNETS2009.7792} }- Cristina CerveIó-Pastor
Joan Triay
Sebastià SalIent
Year: 2009
Distributed resources assignment for Optical Burst Switching without wavelength conversion (Invited Paper)
WOBS
IEEE
DOI: 10.4108/ICST.BROADNETS2009.7792
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.