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Cross-Layer Adaptive Elastic Optical Networks
Journal of Optical Communications and Networking, 2018Optical networks are designed to be operated statically: lightpaths are provisioned for uninterrupted operation for several years using high margins to anticipate the deterioration of their quality of transmission (QoT) from various factors (equipment aging, malfunctioning, and maintenance operations).
Ippokratis Sartzetakis +2 more
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Scalable elastic optical path networking models
2016 18th International Conference on Transparent Optical Networks (ICTON), 2016In order to face the steady growth of the optical networks, network operators are now moving to elastic optical networking, with the challenge of optimizing the spectrum usage through the so-called routing and spectrum assignment (RSA) problem. It is a much more difficult problem than the classical routing and wavelength assignment (RWA) problem, for ...
Brigitte Jaumard, Maryam Daryalal
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Complex Elastic Optical Network Simulator (CEONS)
2015 17th International Conference on Transparent Optical Networks (ICTON), 2015This paper presents the features of an advanced software simulator for the Elastic Optical Network (EON) - Complex Elastic Optical Networks Simulator (CEONS). The CEONS is as a test environment for solving three main issues addressed in EON: Routing and Spectrum Assignment (RSA) problems; Routing, Modulation and Spectrum Assignment (RMSA) problems, and
Michal Aibin, Mateusz Blazejewski
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Application of Machine Learning in Elastic Optical Networks
2018 European Conference on Optical Communication (ECOC), 2018Machine learning (ML) techniques have been adopted in elastic optical networks to enable automated operations and extract more capacity from the physical layer. We review and discuss various applications of ML in link monitoring, link modeling, link provisioning and network control.
Qunbi Zhuge, Weisheng Hu
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On the worthiness of flexible grid in elastic optical networks
2015 European Conference on Optical Communication (ECOC), 2015Elastic networks are agreed as the right solution to improve optical networks performance. This work discusses about flexible grid usage value, supported by extensive simulations. Elastic connections using fixed grid spectrum allocation can actually lead to better network performance.
Jaume Comellas, Gabriel Junyent
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QoT Aware Adaptive Elastic Optical Networks
Optical Fiber Communication Conference, 2017Operating Elastic Optical Networks with low margins increases their efficiency but suffers from soft-failures, rendering the QoT of lightpaths unacceptable. We present a toolkit that leverages the flexibility dimensions to survive against QoT problems.
Sartzetakis, I. +2 more
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Energy efficiency in elastic-bandwidth optical networks
2011 International Conference on the Network of the Future, 2011The forecasted growth in the Internet traffic has made the operators and industry to be concerned about the power consumption of the networks, and to become interested in alternatives to plan and operate the networks in a more energy efficient manner. The introduction of OFDM, and its property of elastic bandwidth allocation, opens new horizons in the ...
Jorge López Vizcaíno +2 more
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Toward Deeply Virtualized Elastic Optical Networks
Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013, 2013We discuss the virtualization in optical networks from the elastic networking level to sliceable equipment level. We propose a novel transport system architecture based on equipment level virtualization that achieves fine granular sub-port level grooming in the optical domain.
Masahiko Jinno, Akira Hirano
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Spectrum defragmentation algorithms in elastic optical networks
Optical Switching and Networking, 2019Abstract Fragmentation in Elastic Optical Networks is an issue caused by isolated, non-aligned, and non-contiguous frequency slots that cannot be used to allocate new connection requests to the network, due to the optical layer restrictions imposed to the Routing and Spectrum Assignment (RSA) algorithms.
Sergio Fernández-Martínez +2 more
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