Prioritized scheduling for bufferless slotted WDM optical packet switch via wavelength conversion

This paper proposes a prioritized scheduling in associated with contention resolution schemes for bufferless, single stage, non-blocking fully connected optical packet switch in synchronous optical packet switching network. We introduce an untraditional technique that integrates prioritized scheduling with wavelength conversion that can be realized by tunable optical wavelength converter (TOWC). It comprises a set of preemptive selective policies for contention resolution. This proposed scheme ensures packet loss probability below 10(-10) that supports traffic load up to 50%, without suffering from conventional buffering delay. It guarantees real-time delivery for high priority packet with elimination of unnecessary wavelength conversion.