1 A Carrier Preemption Access Control Protocol for Supporting IP Packets over WDM Ring Networks

In this paper, a carrier preemption access control protocol based on carrier sense multiple access schemes has been investigated for supporting IP packets over all optical WDM ring networks. The intention of our protocol design is to reduce the communication overhead of IP packets over optical networks for local/metropolitan area. To facilitate spatial reuse on the bandwidth of all optical ring networks, a special design is made for the carrier preemption scheme. Simulation has been done to evaluate the performance of our protocol. The simulation results display extraordinary good network efficiency