Tridental Resource Assignment Algorithm for Spectrally-Spatially Flexible Optical Networks
Tridental Resource Assignment Algorithm for Spectrally-Spatially Flexible Optical Networks
复制标题
频谱空间灵活光网络的 Tridental 资源分配算法
DOI：
10.1109/icc42927.2021.9500340
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Subramaniam, Suresh
中科院分区：
文献类型：
--
作者：
Petale, Shrinivas;Zhao, Juzi;Subramaniam, Suresh
频谱-空间柔性光网络（SS-FONs）的最新进展通过利用弹性光传输、细粒度和灵活的频率网格、多空间模式（光纤芯）和各种先进的调制格式（MFs）来增加光纤容量，从而增强了业务供应。ss - fon中一个重要的光路资源分配问题是路由、调制、核心和频谱分配（RMCSA）问题。不同核连接之间的串扰（XT）会降低传输质量，RMCSA算法必须确保在实现性能最大化的同时满足XT约束。在本文中，我们提出了一种RMCSA算法，称为Tridental Resource Assignment algorithm (TRA)，因为它平衡了影响网络性能的网络容量、频谱利用率和频谱碎片。我们的资源分配方法包括离线/静态网络规划组件和在线/动态供应组件。在前者中，MFs和频谱利用率用于计算光路的路径优先级。然后，动态供应组件使用TRA在选定的路径上分配资源。在现实网络场景中进行的大量仿真实验表明，TRA通过保持频谱利用率和XT之间的良好平衡，显著降低了各种场景下的带宽阻塞概率（BBP）。
Recent advances in Spectrally-Spatially Flexible Optical Networks (SS-FONs) have enhanced service provisioning by leveraging elastic optical transmission with a fine-grained and flexible frequency grid, multiple spatial modes (fiber cores), and a variety of advanced modulation formats (MFs) to increase the capacity of optical fiber. An important lightpath resource assignment problem in SS-FONs is the routing, modulation, core, and spectrum assignment (RMCSA) problem. Crosstalk (XT) between connections on different cores degrades the quality of transmission, and the RMCSA algorithm must ensure that XT constraints are met while maximizing performance. In this paper, we propose an RMCSA algorithm called Tridental Resource Assignment algorithm (TRA), as it balances network capacity, spectrum utilization and spectrum fragmentation that affect network performance. Our resource assignment approach includes both an offline/static network planning component and an online/dynamic provisioning component. In the former, MFs and spectrum utilization are used to compute path priorities for a lightpath. The dynamic provisioning component then allocates the resources on a selected path using TRA. Extensive simulation experiments performed in realistic network scenarios indicate that TRA significantly reduces the bandwidth blocking probability (BBP) in a variety of scenarios by maintaining a good balance between spectrum utilization and XT.
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DOI：
--
发表时间：
2019
期刊：
International Conference on Optical Network Design and Modelling
影响因子：
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作者：
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DOI：
10.1364/jocn.11.000213
发表时间：
2019-04
期刊：
IEEE/OSA Journal of Optical Communications and Networking
影响因子：
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作者：
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通讯作者：
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影响因子：
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