Bandwidth-ratio-based light-tree selection in dynamic multicast traffic grooming for optical WDM mesh networks

Bandwidth-ratio-based light-tree selection in dynamic multicast traffic grooming for optical WDM... This paper studies the dynamic multicast traffic grooming problem in optical WDM mesh networks. A key step in dynamic multicast traffic grooming is to select a subset of exiting light-trees to support a new multicast request. A number of selection rules have been used in algorithms proposed in the literature. This paper proposes to use the bandwidth usage per multicast destination called bandwidth ratio as the light-tree selection criterion and to employ a light-tree selection rule that chooses the shortest-path tree branch with the smallest bandwidth ratio. Based on the light-tree selection rule, this paper develops an effective dynamic multicast traffic grooming algorithm. A number of performance measures including request blocking ratio, bandwidth utilization factor, unnecessary bandwidth utilization factor, mean number of light-trees per accepted connection request, and computation time are used to compare the proposed algorithm with other algorithms in the literature that employ various light-tree selection rules. Simulation results show that the proposed algorithm is able to make efficient utilization of the bandwidth resource and yield significantly lower request blocking ratio. Photonic Network Communications Springer Journals

Bandwidth-ratio-based light-tree selection in dynamic multicast traffic grooming for optical WDM mesh networks

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Springer US
Copyright © 2014 by Springer Science+Business Media New York
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
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