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An auxiliary-graph-based methodology for regenerator assignment problem optimization in translucent elastic optical networks

机译:基于辅助图的半透明弹性光网络中再生器分配问题优化方法

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摘要

In this article, we propose an auxiliary-graph-based methodology to best assess regenerator assignment choices in translucent elastic optical networks. The proposed methodology considers that each possible transparent segment in a route is represented by an edge in an auxiliary graph. Proper edge cost functions are designed and the decision on where to use regeneration resources is performed by a standard routing algorithm in the built auxiliary graph. We propose four different edge cost functions and compare the performance, in terms of blocking probability of call requests, of some networks using our proposed methodology and other heuristics available in the literature that tackle with regenerator assignment problem in translucent elastic optical networks. The simulation scenarios involved three different network physical topologies, amplified spontaneous emission noise as physical impairment generated by boosters, in-line amplifiers and pre-amplifiers, besides losses and gains observed by the optical signals along network lightpaths. By properly defining the respective edge cost function, our proposed methodology can not only replicate some heuristics previously proposed in the literature, but also create strategies that present superior performance in all analyzed scenarios and conditions.
机译:在本文中,我们提出了一种基于辅助图的方法,以最好地评估半透明弹性光网络中的再生器分配选择。所提出的方法认为,路线中的每个可能的透明段都由辅助图中的一条边表示。设计了适当的边成本函数,并通过构建的辅助图中的标准路由算法来决定在何处使用再生资源。我们提出了四个不同的边缘成本函数,并使用我们提出的方法和文献中提供的其他启发式方法(根据呼叫请求的阻塞概率)比较了某些网络的性能,这些方法可解决半透明弹性光网络中的再生器分配问题。仿真场景涉及三种不同的网络物理拓扑,除了由沿网络光路的光信号观察到的损耗和增益外,还增强了放大器,在线放大器和前置放大器产生的作为物理损害的自发发射噪声。通过适当定义各自的边缘成本函数,我们提出的方法不仅可以复制文献中先前提出的一些启发式方法,而且可以创建在所有分析的场景和条件下均能表现出卓越性能的策略。

著录项

  • 来源
    《Optical fiber technology》 |2019年第12期|102008.1-102008.9|共9页
  • 作者

  • 作者单位

    Univ Fed Campina Grande Elect Engn & Informat Ctr Elect Engn Dept Campina Grande Paraiba Brazil;

    Univ Pernambuco Polytech Sch Pernambuco Comp Engn Dept Recife PE Brazil;

    Univ Fed Pernambuco Technol Ctr & Geosci Elect & Syst Dept Photon Grp Recife PE Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dynamic traffic; Elastic optical network; Physical impairment; Regenerator assignment; Regenerator placement;

    机译:动态流量;弹性光网络;身体障碍;再生器分配;再生器放置;

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