Analytical Blocking Model for Generalized Light-tree in Optical WDM Networks

The manycast communication paradigm is becoming increasingly important in today’s optical networks, wherein connection requests from a source node can be routed to a subset of a candidate destination set. This flexibility in choosing different destinations from a larger candidate destination set helps improve the network performance. In this paper, we develop a new analytical model to compute the network-wide blocking performance for generalized manycast routing and wavelength assignment (MRWA) in optical wavelength division multiplexed (WDM) networks. Specifically, we calculate the request blocking on full-wavelength convertible optical networks based on Markov chains and conditional probability analysis. Performance results show that our model is accurate and is verified by extensive simulation results.