Placement of Multicast Capable Nodes in Power Constrained All-Optical WDM Networks

In this paper, we propose a topology-based Multicast-Capable (MC) nodes placement heuristic - Power Attenuation Constrained Placement (PACP) in amplifier-less power attenuation constrained all- optical metropolitan area network (AL-MAN). We define a selection function in our algorithm to find the ´best´ locations in the network for a given number of MC nodes to achieve good performance in overall cost competitiveness (CC) while ensuring that power constraint is always satisfied. Through our simulation studies, we show that PACP is able to construct power constrained trees with cost close to the optimal cost, and also able to improve the CC as high as 6% compared to latest topology-based algorithm. The simulation results conclude that PACP is cost-resilient for amplifier-less optical multicast networks with small number of MC nodes, and with multicast sessions with low source power output.