波长转换稀疏的WDM网络中一种低成本时延约束路由与波长分配算法

Qiwu Wu, Xianwei Zhou, Jianping Wang, Zhizhong Yin, Ling-zhi Jiang
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引用次数: 5

摘要

本文提出了暂时可用波长的彩色多图模型。基于该彩色多图模型,提出了一种基于k最短路径策略的低成本延迟约束路由算法。该算法具有以下优点:(1)一步完成路由和波长分配;(2)光路总成本低;(3)源节点到目的节点的时延是有界的。仿真结果表明,该算法具有良好的工作性能,可以获得满意的阻塞概率。
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A Low-Cost Delay-Constrained Routing and Wavelength Assignment Algorithm in WDM Networks with Sparse Wavelength Conversions
In this paper, we propose a colored multigraph model for the temporarily available wavelengths. Based on this colored multigraph model, a low-cost delay-constrained routing algorithm is proposed by applying the K-shortest-path strategy. The proposed algorithm has the following advantages: (1) finish routing and wavelength assignment in one step; (2) the total cost of lightpath is low; (3) the delay from the source node to the destination node is bounded. Simulation results show that the proposed algorithm works well and achieves satisfactory blocking probability.
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