Novel dynamic impairment-aware algorithm for modulation, core, and spectrum assignment in SDM-EONs

IF 1.9 4区计算机科学 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS

Optical Switching and Networking Pub Date : 2023-11-03 DOI:10.1016/j.osn.2023.100763

Jurandir C. Lacerda Jr. , Adolfo V.T. Cartaxo , André C.B. Soares

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引用次数: 0

Abstract

Space-division multiplexed elastic optical networks (SDM-EONs) utilizing multi-core fiber (MCF) have been considered to address the growing traffic demand in transport networks. The quality of transmission (QoT) of MCF-based SDM-EONs is affected by inter-core and intra-core physical layer impairments (PLIs). This paper proposes an inter-core crosstalk-aware and intra-core impairment-aware algorithm for modulation, core, and spectrum assignment (CIA-MCSA) in MCF-based SDM-EONs. The CIA-MCSA considers PLI estimation in a dynamic traffic scenario and allocates new lightpaths using strategies to avoid blocking by insufficient QoT of the new lightpath and of already active lightpaths. Using numerical simulation, the performance of the CIA-MCSA is compared with five algorithms proposed by other authors, considering two distinct network topologies, heterogeneous traffic demands, and different levels of inter-core crosstalk. The results show that, when compared with the most competitive of the other algorithms, $(i)$ CIA-MCSA achieves an average reduction of the request blocking probability by at least 33.87%; $(i i)$ CIA-MCSA achieves an average reduction of the bandwidth blocking probability by at least 20.74%; and $(i i i)$ CIA-MCSA increases the network spectrum utilization by at least 3.04%.

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SDM EON中用于调制、核心和频谱分配的新的动态损伤感知算法

利用多芯光纤（MCF）的空分复用弹性光网络（SDM EON）已被认为是为了满足传输网络中日益增长的业务需求。基于MCF的SDM EON的传输质量（QoT）受到核心间和核心内物理层损伤（PLI）的影响。本文提出了一种用于基于MCF的SDM EON中的调制、核心和频谱分配（CIA-MCSA）的核心间串扰感知和核心内损伤感知算法。CIA-MCSA考虑动态业务场景中的PLI估计，并使用策略来分配新光路，以避免由于新光路和已经活动的光路的QoT不足而造成的阻塞。通过数值模拟，将CIA-MCSA的性能与其他作者提出的五种算法进行了比较，考虑到两种不同的网络拓扑、异构流量需求和不同级别的核间串扰。结果表明，与其他最具竞争力的算法相比，（i）CIA-MCSA实现了至少33.87%的请求阻塞概率的平均降低；（ii）CIA-MCSA实现带宽阻塞概率的平均降低至少20.74%；以及（iii）CIA-MCSA将网络频谱利用率提高至少3.04%。

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

Optical Switching and Networking COMPUTER SCIENCE, INFORMATION SYSTEMS-OPTICS

CiteScore

5.20

自引率

18.20%

发文量

审稿时长

77 days

期刊介绍： Optical Switching and Networking (OSN) is an archival journal aiming to provide complete coverage of all topics of interest to those involved in the optical and high-speed opto-electronic networking areas. The editorial board is committed to providing detailed, constructive feedback to submitted papers, as well as a fast turn-around time. Optical Switching and Networking considers high-quality, original, and unpublished contributions addressing all aspects of optical and opto-electronic networks. Specific areas of interest include, but are not limited to: • Optical and Opto-Electronic Backbone, Metropolitan and Local Area Networks • Optical Data Center Networks • Elastic optical networks • Green Optical Networks • Software Defined Optical Networks • Novel Multi-layer Architectures and Protocols (Ethernet, Internet, Physical Layer) • Optical Networks for Interet of Things (IOT) • Home Networks, In-Vehicle Networks, and Other Short-Reach Networks • Optical Access Networks • Optical Data Center Interconnection Systems • Optical OFDM and coherent optical network systems • Free Space Optics (FSO) networks • Hybrid Fiber - Wireless Networks • Optical Satellite Networks • Visible Light Communication Networks • Optical Storage Networks • Optical Network Security • Optical Network Resiliance and Reliability • Control Plane Issues and Signaling Protocols • Optical Quality of Service (OQoS) and Impairment Monitoring • Optical Layer Anycast, Broadcast and Multicast • Optical Network Applications, Testbeds and Experimental Networks • Optical Network for Science and High Performance Computing Networks