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首页> 外文期刊>Journal of Lightwave Technology >A Novel Survivable Routing Algorithm With Partial Shared-Risk Link Groups (SRLG)-Disjoint Protection Based on Differentiated Reliability Constraints in WDM Optical Mesh Networks
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A Novel Survivable Routing Algorithm With Partial Shared-Risk Link Groups (SRLG)-Disjoint Protection Based on Differentiated Reliability Constraints in WDM Optical Mesh Networks

机译：WDM光网状网络中基于差分可靠性约束的具有部分共享风险链路组（SRLG）不相交保护的可生存路由算法

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摘要

Previous research on survivability with differentiated reliability in wavelength-division-multiplexing (WDM) optical mesh networks mostly considered the failure probability of a fiber link with the link length that may not be a good solution for consideration of shared-risk link groups (SRLGs). In this paper, we propose a new model of failure probability with the SRLG constraints in WDM optical mesh networks. Based on this model, we present the backup resources assignment and the routing selection method with the differentiated reliable requirements of users. To evaluate the performances of this model, we propose a novel survivable routing algorithm called partial SRLG-disjoint protection (PSDP) to tolerate the single-SRLG failure. Compared with the previous algorithm, PSDP can obtain a better resource utilization ratio and lower blocking probability. Simulation results are shown to be promising.
机译：先前对波分复用（WDM）光网状网络中具有可区分性可靠性的生存能力的研究大多考虑了具有链路长度的光纤链路的故障概率，这可能不是考虑共享风险链路组（SRLG）的好解决方案。在本文中，我们提出了一种具有SRLG约束的WDM光网状网络故障概率模型。在此模型的基础上，我们提出了具有差异化用户需求的备用资源分配和路由选择方法。为了评估该模型的性能，我们提出了一种新颖的可生存路由算法，称为局部SRLG-不相交保护（PSDP），以容忍单SRLG故障。与以前的算法相比，PSDP可以获得更好的资源利用率和更低的阻塞概率。仿真结果表明是有希望的。

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