Design and Provisioning of WDM Networks With Many-to-Many Traffic Grooming

The authors have considered and analyzed four different WDM network architectures for many-to-many traffic grooming. For NSOWDM and NSTWDM networks, they have introduced light-path cycles as the optimal virtual topology for single and multiple many-to-many sessions in certain special cases. Based on light-path cycles, efficient near-optimal heuristics were developed for the general case. For the SHWDM network, they have introduced a novel approach that combines optical splitting and network coding to provision many-to-many sessions and they derived an optimal as well as a heuristic solution. They have concluded that each of the four networks proposed is the most cost-effective choice for a certain range of traffic granularities.