Virtual-node-based multicast routing and wavelength assignment in sparse-splitting optical networks

Abstract

This paper investigates several problems associated with optical multiicast routing and wavelegnth assignment n sparse-splitting optical networks for interactive real time media distribution. Unfortunatedly, the constrained multicast routing with optimized wavelength assignment leads to NP complete condition. Thus, in this paper, a virtual node based multicast routing algorithm is first proposed to satisfy thr requirements of interactive real time multicasting