An efficient preemption-based service differentiation scheme for OBS networks

Abstract

In this paper, we propose a preemption-based service differentiation scheme for optical burst switching (OBS) networks based on combining a preemption channel selection algorithm and a channel partitioning algorithm. The proposed preemption channel selection algorithm minimizes the length of preempted bursts to improve channel efficiency, while the channel partitioning algorithm controls the degree of service differentiation between service classes. Performance evaluation results showed that the proposed scheme can improve channel efficiency and effectively provide controllable service differentiation. © Springer-Verlag Berlin Heidelberg 2004.