An Accurate Model for Optical Burst Switching Core Node Equipped with Wavelength Converter Pool

This paper pays a great attention to resolving the contention problem in Optical Burst Switching (OBS) net works using wavelength converters. Not only the traffic load that leads to burst collision, but also other factors are incorporated. In order to calculate the blocking accurately, a time-slot analytical method is presented. Numerical results for the steady state throughput and the average burst loss probability are presented under different traffic scenarios. Due to the high cost of the wavelength converters, optimum values for the wavelength conversion capability in the node are reached which provide minimum burst loss probability