This paper considers a challenging problem: to simultaneously optimize the cost and the quality of service in opaque wavelength division multiplexing (WDM) networks. An optimization problem is proposed that takes the information including network topology, traffic between end nodes, and the target level of congestion at each link/node in WDM networks. The outputs of this problem include routing, link channel capacities, and the optimum number of switch ports locally added/dropped at all switch nodes. The total network cost is reduced to maintain a minimum congestion level on all links, which provides an efficient trade-off solution for the network design problem. The optimal information is utilized for dynamic traffic in WDM networks, which is shown to achieve the desired performance with the guaranteed quality of service in different networks. It was found that for an average link blocking probability equal to 0.015, the proposed model achieves a net channel gain in terms of wavelength channels ( ) equal to 35.72 , 39.09 , and 36.93 compared to shortest path first routing and equal to 29.41 , 37.35 , and 27.47 compared to alternate routing in three different networks.

中文翻译：

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光网络中动态流量的联合路由、链路容量尺寸和交换机端口优化

本文考虑了一个具有挑战性的问题：在不透明波分复用 (WDM) 网络中同时优化成本和服务质量。提出了一个优化问题，该优化问题包含网络拓扑、端节点之间的流量以及 WDM 网络中每个链路/节点的目标拥塞水平等信息。这个问题的输出包括路由、链路通道容量和在所有交换机节点本地添加/删除的交换机端口的最佳数量。降低总网络成本以在所有链路上保持最小拥塞水平，这为网络设计问题提供了有效的权衡解决方案。最佳信息用于 WDM 网络中的动态流量，这表明可以在不同网络中保证服务质量的情况下实现所需的性能。 ）等于35.72 ，39.09 ，和36.93 相比最短路径第一路由和等于29.41 ，37.35 ，27.47和 相比，在三个不同的网络迂回路由。