波长路由网络中阻塞概率估计的一种新的分析方法

H. Waldman, Divanilson R. Campelo, R. C. Almeida
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引用次数: 13

摘要

介绍了一种新的全光网络阻塞概率估计分析方法。讨论了经典李氏近似的假设,并对其影响进行了评价。本文提出了一种较好的替代独立链路假设的方法。新的假设将所有活动路径和所有自由链路作为网络拓扑上的独立对象。新模型被证明可以精确地拟合通过使用泊松空间均匀流量在线性拓扑上模拟得到的阻塞概率。给出了正则网格的一种扩展,该扩展对于极小和极大节点度都是渐近有效的。最后,对两种不同波长分配算法的独立波长假设进行了评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new analytical approach for the estimation of blocking probabilities in wavelength-routing networks
The paper introduces a new analytical approach for estimating blocking probabilities in all-optical networks. The assumptions of the classical Lee approximation are discussed and their effects are evaluated. The paper proposes a better substitute for the independent link assumption. The new assumption takes all active paths, as well as all free links, as independent objects on the network topology. The new model is shown to generate estimates that fit exactly the blocking probabilities obtained through simulations on linear topologies using Poissonian, spatially homogeneous traffic. An extension to regular meshes is presented that is asymptotically good for very small and very large nodal degrees. Finally, the independent wavelength assumption is also evaluated for two different wavelength assignment algorithms.
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