Distributed queue optical burst switched ring-A MAC protocol withzero blocking for OBS ring networks

摘要

Optical burst switching is a switching technology that is able to provide viable switching for optical inter-net with the present day technology. This paper presents a new medium access protocol for wavelengthdivision multiplexing based optical burst switched metro ring network namely distributed queue opticalburst switched ring (DQOBSR). It is a slotted, distributed queue access protocol with fixed bus structureand simple wavelength assignment. The topology consists of two unidirectional, counter rotating ringsand the medium access protocol is based on distributed queuing. The protocol provides zero blockingwith acceptable access delays. A mathematical model is also presented to determine the mean accessdelay which is the important performance parameter for the protocol. The simulation and model basedresults are compared and found to be in good agreement.