Title: Periodically scheduled burst flows in optical burst switching networks

Authors: Li Lei, Srinivas Sampalli

Addresses: Faculty of Computer Science, Dalhousie University, 6050 University Avenue, Halifax, Nova Scotia B3H 1W5, Canada. ' Faculty of Computer Science, Dalhousie University, 6050 University Avenue, Halifax, Nova Scotia B3H 1W5, Canada

Abstract: Providing flexible quality of service (QoS) for multiple classes of traffics is one of the important challenges in the design of optical burst switching (OBS) networks. In this paper, we propose a novel bandwidth reservation scheme for periodically scheduled bursts. Multi-protocol label switching (MPLS) is used to construct reliable burst delivery channels across the network. Meanwhile, best effort bursts are transferred using one-way offset signalling to improve the wavelength efficiency. Our hybrid OBS architecture provides flow level QoS control without compromising the performance of best effort bursts. Simulation results show that our approach is better than early dropping schemes.

Keywords: quality of service; flexible QoS; optical burst switching; OBS networks; multi-protocol label switching; burst flows; channel scheduling; bandwidth reservation; periodically scheduled bursts; simulation.

DOI: 10.1504/IJCNDS.2008.020710

International Journal of Communication Networks and Distributed Systems, 2008 Vol.1 No.3, pp.262 - 281

Published online: 12 Oct 2008 *

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