A packet pre-classification CSMA/CA MAC protocol for IP over WDM ring networks

A packet pre-classification MAC (media access control) protocol based on carrier sense multiple access with collision avoidance (CSMA/CA) scheme has been investigated for supporting IP packet over the all-optical WDM ring networks. The intention of the protocol is to increase throughput of IP over optical networks in metropolitan area network (MAN). This protocol avoids both packet collision and packet fragmentation. In order to improve the utilization of network, the packets transmitted from local area network (LAN) are pre-classified into various class queues of access point (AP) according their length. Simulations had been done to evaluate the performance of the protocol, and the simulation results show extraordinarily good network efficiency.