Analysis of multicast traffic grooming algorithms in WDM mesh networks

Grooming the low-speed traffic to reduce the blocking probability and improve throughput in optical layer multicast routing tree is a more complex joint optimization problem.The paper analyzes the methods and results of the optical multicast traffic grooming problem in WDM networks.Also,the multicast static traffic and dynamic traffic grooming algorithms are analyzed and compared in the paper respectively.Furthermore,the authors discuss the performance,characteristics and the existing problems of those algorithms for optical multicast traffic grooming.Finally,we summarize the future research ideas about the methods of dynamic multicast traffic grooming.