Dynamic multi-hop multipath RMSA and traffic grooming in OFDM-based sliceable elastic optical networks

IF 0.7 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS Journal of High Speed Networks Pub Date : 2023-03-30 DOI:10.3233/jhs-222007

Hwa-Chun Lin, Wei-Te Tseng

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Abstract

In elastic optical networks (EON), routing, modulation selection, and spectrum assignment (RMSA) is crucial in provisioning connection requests. Multipath RMSA offers a number of benefits including provisioning of ultra-high bandwidth demands and better utilization of fragmented spectrum resource. By Combining with traffic grooming, multipath RMSA and traffic grooming is able to provide better utilization of network resource in provisioning connection requests. Adding multi-hop routing mechanism to multipath RMSA and traffic grooming increases the flexibility for selecting paths resulting in higher probability of successfully finding routing paths for connection requests. Dynamic multipath RMSA problem in EON has been investigated extensively in the literature. Dynamic multi-hop multipath RMSA and traffic grooming problem in EON is far from been well studied. This paper proposes an algorithm for the dynamic multi-hop multipath RMSA and traffic grooming problem in OFDM-based elastic optical networks with sliceable bandwidth-variable transponders. Performance of the proposed algorithm is studied via simulation. Our simulation results show that the proposed algorithm yields lower bandwidth blocking ratio than an existing algorithm.

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基于ofdm的可切片弹性光网络中动态多跳多径RMSA与业务量梳理

在弹性光网络(EON)中，路由、调制选择和频谱分配(RMSA)是提供连接请求的关键。多路径RMSA提供了许多好处，包括提供超高带宽需求和更好地利用碎片频谱资源。通过与流量疏导相结合，多路径RMSA和流量疏导能够在提供连接请求时更好地利用网络资源。向多路径RMSA和流量修饰添加多跳路由机制增加了选择路径的灵活性，从而提高了成功为连接请求找到路由路径的概率。EON中的动态多路径RMSA问题在文献中得到了广泛的研究。EON中的动态多跳多径RMSA和流量疏导问题还没有得到很好的研究。针对基于ofdm的可变带宽切片弹性光网络中动态多跳多径RMSA和业务量梳理问题，提出了一种算法。通过仿真研究了该算法的性能。仿真结果表明，该算法比现有算法的带宽阻塞率更低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of High Speed Networks Computer Science-Computer Networks and Communications

CiteScore

1.80

自引率

11.10%

发文量

期刊介绍： The Journal of High Speed Networks is an international archival journal, active since 1992, providing a publication vehicle for covering a large number of topics of interest in the high performance networking and communication area. Its audience includes researchers, managers as well as network designers and operators. The main goal will be to provide timely dissemination of information and scientific knowledge. The journal will publish contributed papers on novel research, survey and position papers on topics of current interest, technical notes, and short communications to report progress on long-term projects. Submissions to the Journal will be refereed consistently with the review process of leading technical journals, based on originality, significance, quality, and clarity. The journal will publish papers on a number of topics ranging from design to practical experiences with operational high performance/speed networks.