A new wavelength scheduling algorithm for achieving fairness in OBS networks

As a burst travels through OBS networks, its residual offset time decreases, and the blocking probability increases. This phenomenon has adverse effects on fairness and throughout of OBS networks. In this paper, we propose a new wavelength scheduling algorithm giving priority to the bursts with more network resources which they have already reserved to resolve the unfairness problem. The simulation results show when offered load is 0.6, the ratio of blocking probability of bursts with longest route lengths to that of bursts with shortest route lengths is 1700 and 2 respectively for standard JET and our algorithm. The results also show the algorithm can significant reduce the blocking probability with burst duration weighting.