Performance of a Partial Burst Retransmission Mechanism in OBS Networks

We investigate the effects on performance of using a partial retransmission mechanism in Optical Burst Switched (OBS) networks. In our scheme, the lost segments of a burst are retransmitted in the OBS layer. We also propose an optical resource reservation using the partial retransmission mechanism. Our scheme attempts to improve the burst contention resolution and optical channel utilization. Simulation results indicate that the link utilization of the OBS network is improved markedly at the expense of signaling and ingress buffers.