A novel wavelength assignment scheme in OBS network for contention avoidance

Conventional optical burst switching(OBS)technique adopts purely statistical multiplex mechanism so that the bursts collide with each other very easily.To address this problem,a novel proactive con- tention avoidance scheme is proposed,which assigns dedicated wavelengths to each ingress node,then st- numbering algorithm is used to construct the traffic load balanced spanning trees .In this way,contention can be eliminated at ingress nodes,and the amount of bursts that could be accommodated by ingress nodes ...