A Distributed Contention Resolution Scheme to Reduce Blocking Probability in Optical Burst Switching Networks

In this paper, we propose a distributed contention resolution scheme to reduce blocking probability in optical burst-switching networks. The scheme takes priority, propagation delay from the ingress router, and the burst-size into account to resolve contention, and guarantees that at least one of the bursts succeeds when contention occurs. We use a control packet to delay transmission of the contending burst at ingress router. We compare the performance of our scheme, by simulation, and show that the proposed scheme outperforms the earlier scheme in reducing the blocking probability. For simulation, we generated bursty traffic using an M/Pareto distribution.