Multicast Routing and Wavelength Assignment for Dynamic Multicast Sessions in WDM Network Using Minimum Δ

摘要

We propose a scheme of Multicast Routing and Wavelength Assignment (MC-RWA) to establish light-tree for dynamic multicast session for the Wavelength Division Multiplex (WDM) network by choosing the wavelength which leads to reduction of blocking probabilities by using a parameter Δ. Δ is denned as the overall reduction of connectivity of the nodes in the network caused by a wavelength assignment process when using a particular wavelength, and we assign wavelength resources to the multicast session by using the Δ to choose the wavelength which leads to lowest reduction of connectivity. Through computer simulation, we show that the proposed scheme has lower blocking probabilities when comparing with minimum cost scheme under the condition that wavelength conversion is not allowed.