2021 International Conference on Optical Network Design and Modeling (ONDM)最新文献_第4页

Minimum Disturbance Rerouting to Optimize Bandwidth Usage 最小干扰重路由以优化带宽使用

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492388

H. Duong, B. Jaumard, D. Coudert

引用次数: 0

Inter-Band GSNR Degradations and Leading Impairments in C+L Band 400G Transmission C+L波段400G传输的带间GSNR退化和前导损伤

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492485

A. D’Amico, E. London, E. Virgillito, A. Napoli, V. Curri

引用次数: 7

Challenges in Extending Optical Fibre Transmission Bandwidth Beyond C+L Band and How to Get There 将光纤传输带宽扩展到C+L波段以外的挑战及实现方法

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492434

H. Buglia, E. Sillekens, A. Vasylchenkova, Wenting Yi, R. Killey, P. Bayvel, L. Galdino

引用次数: 6

Evaluation of Lightpath Deployment Strategies in Flexible-Grid Optical Networks 柔性网格光网络光路部署策略评估

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492493

Amir Varasteh, S. Patri, A. Autenrieth, C. M. Machuca

{"title":"Evaluation of Lightpath Deployment Strategies in Flexible-Grid Optical Networks","authors":"Amir Varasteh, S. Patri, A. Autenrieth, C. M. Machuca","doi":"10.23919/ONDM51796.2021.9492493","DOIUrl":"https://doi.org/10.23919/ONDM51796.2021.9492493","url":null,"abstract":"With the recent advances in elastic optical networks, a significant increase in throughput is promised with the use of bandwidth variable transponders. These transponders support different lightpath configurations, in terms of data rate, modulation format, and bandwidth. Considering the ever-increasing traffic in the core optical networks, routing, configuration, and spectrum assignment (RCSA) algorithms are crucial to increase the network throughput over the planning periods. To do this, lightpaths should be configured with enough data rate, while guaranteeing the signal quality at the receiver.In this work, we present a detailed evaluation of different lightpath deployment strategies in the context of multi-period elastic optical network planning. We show that in our RCSA algorithm, a multi-objective optimization can cope with the increasing traffic by deploying up to 31% fewer lightpaths while reducing the over-provisioning by 9% compared with the greedy approaches. Further, our simulation results indicate that our proposed approach can lead up to 16% higher power-efficiency.","PeriodicalId":163553,"journal":{"name":"2021 International Conference on Optical Network Design and Modeling (ONDM)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127905877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Adaptive Link-by-Link Band Allocation: A Novel Adaptation Scheme in Multi-Band Optical Networks 自适应逐链路频带分配:一种新的多波段光网络自适应方案

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492502

M. Nakagawa, H. Kawahara, T. Seki, T. Miyamura

引用次数: 9

Traffic Protection in Multilayer Core Networks by Optimum Thinning of MPLS Tunnel Capacities 基于MPLS隧道容量优化细化的多层核心网流量保护

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492463

R. Reyes, Shkurte Esati, T. Bauschert

{"title":"Traffic Protection in Multilayer Core Networks by Optimum Thinning of MPLS Tunnel Capacities","authors":"R. Reyes, Shkurte Esati, T. Bauschert","doi":"10.23919/ONDM51796.2021.9492463","DOIUrl":"https://doi.org/10.23919/ONDM51796.2021.9492463","url":null,"abstract":"In this paper we study a cost-efficient multilayer restoration (MR) approach for IP/MPLS-Optical networks. In these networks, the capacity of the IP links is reduced by optical link failures that include fibre cuts and lightpath signal-to-noise ratio (SNR) degradations. For instance, when a fibre is cut, the lightpaths that traverse the fibre are rerouted. In most cases, these lightpaths must reduce their line-rates to adapt to the new path lengths, which reduces the capacity of the IP links carried by the lightpaths. This causes a failure state in the IP/MPLS layer characterized by multiple IP links with reduced capacities. When this occurs, the solution used today is to shut off these IP links and restore the traffic by applying IP/MPLS rerouting. This method is costly as it increases the network spare capacity. We study an alternative strategy based on adjustable robust optimization. By this approach, the affected IP links are not torn down. Instead, the MPLS tunnels routed over these links thin their capacities to adapt to the reduced IP link capacities. Then the stranded IP traffic is routed through MPLS tunnels set up on alternative paths. The thinning and routing of MPLS tunnels is planned for foreseen optical link failures. Robustness against unforeseen failures is provided by adjustable decision rules. The efficiency of the strategy is assessed for a German backbone network. The capacity requirements attained by the method are compared with selected MR strategies. The results show that the proposed approach yields capacity savings of least 22% w.r.t the traditional shut off IP links method.","PeriodicalId":163553,"journal":{"name":"2021 International Conference on Optical Network Design and Modeling (ONDM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128776391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

SD-WAN: how the control of the network can be shifted from core to edge SD-WAN:如何将网络的控制从核心转移到边缘

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492375

Sebastian Troia, L. M. M. Zorello, G. Maier

引用次数: 4

Parameter Optimisation for Ultra-Wideband Optical Networks in the Presence of Stimulated Raman Scattering Effect 存在受激拉曼散射效应的超宽带光网络参数优化

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492367

Sam Nallaperuma, N. Shevchenko, S. Savory

引用次数: 2

Spectrum Defragmentation with Improved Lightpath Migration Scheme in Flex-grid Networks 基于改进光路迁移方案的柔性网格网络频谱碎片整理

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492359

N. Khai, R. Reyes, T. Bauschert

{"title":"Spectrum Defragmentation with Improved Lightpath Migration Scheme in Flex-grid Networks","authors":"N. Khai, R. Reyes, T. Bauschert","doi":"10.23919/ONDM51796.2021.9492359","DOIUrl":"https://doi.org/10.23919/ONDM51796.2021.9492359","url":null,"abstract":"The currently deployed fixed-grid Wavelength Division Multiplexing (WDM) technology is expected to be replaced by the more dynamic flex-grid WDM, which requires advanced methods for connection management and control (e.g., lightpath set-up and (re)configuration). The dynamic arrivals and departures of lightpaths often leave behind spectrum holes, causing fragmentation. In addition, reconfiguration of lightpaths often entails lightpath migrations that might cause disruptions of existing connections. Lightpath disruptions are expensive, as penalties will result as compensation for the violation of the service level agreements. In this paper, we analyze and identify the deficiencies of some existing work that tackles this problem. In particular, we show that the minimization of High-slot Marks might still lead to some fragmentation. Besides, these approaches neglect the lightpath configuration delays in the migration process. We develop optimization models that evidently better cope with these deficiencies. The performance improvements of the models are validated in a selected network scenario. The results also open up further research possibilities to better understand and model the trade-off between defragmentation gain and the degree of lightpath disruptions.","PeriodicalId":163553,"journal":{"name":"2021 International Conference on Optical Network Design and Modeling (ONDM)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123687730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Efficient Resource Allocation Scheme in Multi-User LiFi Networks Based on Angle Oriented Transceiver 基于角度定向收发器的多用户LiFi网络高效资源分配方案

2021 International Conference on Optical Network Design and Modeling (ONDM) Pub Date : 2021-06-28 DOI: 10.23919/ONDM51796.2021.9492348

H. Selmy, H. Elsayed, R. Badr, Hossien B. Eldeeb, M. Uysal

{"title":"Efficient Resource Allocation Scheme in Multi-User LiFi Networks Based on Angle Oriented Transceiver","authors":"H. Selmy, H. Elsayed, R. Badr, Hossien B. Eldeeb, M. Uysal","doi":"10.23919/ONDM51796.2021.9492348","DOIUrl":"https://doi.org/10.23919/ONDM51796.2021.9492348","url":null,"abstract":"In this paper, an efficient resource allocation scheme in multi-user LiFi networks is proposed using the angle oriented (AO) technology at the receiver and transmitter sides. To cope with the inter-symbol and inter-user interferences and to further enhance the fairness between the users, we efficiently allocate the resources by choosing the most suitable LED for each AO transmitter (i.e., user) to be ON. The none-selected LEDs are switched OFF to maximize the received signal-to-interference-plus-noise-ratios (SINRs). The resource allocation problem under consideration is a discrete non-convex one with multi-objective optimizations. To obtain the optimal solution, the exhaustive-search (ES) method is used while to reduce the complexity, a suboptimal method is proposed using genetic algorithm (GA) scheme. Our results confirm the accuracy of the proposed sub-optimal solution where less than 0.5 dB difference in the SINR value is noticed. Also, the proposed LiFi system with AO technology shows a superior performance compared to the conventional systems with single transmitter (ST) scheme.","PeriodicalId":163553,"journal":{"name":"2021 International Conference on Optical Network Design and Modeling (ONDM)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115880345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2