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Performance of routing and spectrum allocation approaches for multicast traffic in elastic optical networks

机译:弹性光网络中多播流量路由和频谱分配方法的性能

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摘要

In this paper, we investigate routing and spectrum allocation (RSA) approaches in elastic optical networks for multicast traffic demands. We consider that a light-tree is constructed for each multicast traffic demand and spectrum is allocated to this light-tree using the first-fit spectrum allocation policy. We present an approximation based Steiner tree approach for RSA (STA-RSA) and compare it with the shortest path tree based routing and spectrum allocation (SPT-RSA) to show the benefits of STA-RSA over SPT-RSA. The numerical results show that the presented approach outperforms the traditional approaches in terms of bandwidth blocking probability.
机译:在本文中,我们研究了用于组播流量需求的弹性光网络中的路由和频谱分配(RSA)方法。我们认为,为每个多播地区建造一个光树,使用第一匹配频谱分配策略将频谱分配给该光图。我们为RSA(STA-RSA)提供了一种基于近似的静脉树方法,并将其与基于最短路径树的路由和频谱分配(SPT-RSA)进行比较,以显示STA-RSA在SPT-RSA上的好处。数值结果表明,在带宽阻塞概率方面,呈现的方法优于传统方法。

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