Towards Elastic and Fine-Granular Bandwidth Allocation in Spectrum-Sliced Optical Networks

Wang, Yan; Cao, Xiaojun; Hu, Qian; Pan, Yi

doi:10.1364/jocn.4.000906

Cited by 76 publications

(35 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because of the lack of information regarding traffic demand, all resource allocation must be done online, as quickly as possible while clients wait for an answer. Therefore, the processing time of algorithms cannot be too high, and as the RMSA problem is NP-Hard, usually heuristics are used [6], [30]. Because of this more unstable environment, it is easily visualized that fragmentation losses will happen more often than in static scenarios.…”

Section: A Routing Modulation and Spectrum Assignmentmentioning

confidence: 99%

A Defragmentation-Ready Simulation Framework For Elastic Optical Networks

Tessinari

Colle

Garcia

2017

JCIS

View full text Add to dashboard Cite

Abstract-In this paper we explore in details the framework ElasticO++, which is a simulation framework for Elastic Optical Networks using OMNeT++. ElasticO++ is the first software available capable of working with spectrum defragmentation in dynamic network scenarios. The flexibility offered by the discussed tool allows both academia and industry to develop and evaluate new algorithms and techniques for Elastic Optical Networks. In this paper, we focus on ElasticO++ architecture, algorithms, and the features which we consider makes our framework unique. Additionally, we present a simulation case study and the newer features we are currently developing.

show abstract

Section: A Routing Modulation and Spectrum Assignmentmentioning

confidence: 99%

A Defragmentation-Ready Simulation Framework For Elastic Optical Networks

Tessinari

Colle

Garcia

2017

JCIS

View full text Add to dashboard Cite

show abstract

“…The model resulting from adding constraints (7), (8), (9) and (10) to Model A will be called Model A + .…”

Section: Valid Inequalitiesmentioning

confidence: 99%

“…In this paper, we focus on the second problem, and in particular on optimizing the S-BVTs configurations at the EON nodes. The reason is that, contrary to the RSA problem which is very well investigated (see [8], [9], [6], [10], [11]), the EON dimensioning problem has not, to our knowledge, been treated to the sufficient detail so far, specially when node dimensioning is considered. Although the node equipment, including S-BVTs, has been treated in the literature on EON design, e.g., in [12], [5], the considerations have been focussed on the EOP reconfiguration in existing S-BVT configurations rather than on dimensioning.…”

Section: Introductionmentioning

confidence: 99%

Bin-packing based optimisation of EON Networks with S-BVTs

Sousa

Tomaszewski

Pióro

2016

2016 International Conference on Optical Network Design and Modeling (ONDM)

View full text Add to dashboard Cite

In the paper we address an important problem in minimum cost design of Elastic Optical Networks (EON), namely the problem of optimizing the configurations of Sliceable-Bandwidth Variable Transceivers (S-BVT) at the EON nodes. We first show how this optimization problem can be viewed and modeled as a combination of three bin-packing subproblems, with additional constraints ensuring feasibility of the solution. Then, we propose various valid inequalities and symmetry breaking constraints to strengthen the introduced model. Finally, we show, through computational results, that the strengthening techniques very effectively enable achieving near-optimal solutions.Index Terms-Elastic Optical Networks, network design, integer linear programming, valid inequalities.

show abstract

“…Sub-wavelength accommodation can be achieved in the optical domain by using sub-carriers that have a lower data rate than one wavelength of WDM networks. For super-wavelength traffic demands, spectrum paths can be created by assigning multiple consecutive sub carriers, which can save the reserved guard-band required by WDM technology [2].…”

Section: Problem Descriptionmentioning

confidence: 99%

“…However, each wavelength in WDM networks is separated from adjacent wavelengths by reserved guard-band frequencies, ensuring the signal quality at the receivers. Currently, some works have proved that this spectral inefficiency can be improved by Orthogonal Frequency Division Multiplexing (OFDM) technology [2]. Besides that, nowadays, the traffic demands are still lower speed than WDM fixed high-capacity channels.…”

Section: Introductionmentioning

confidence: 99%

ILP model and effective genetic algorithm for routing and spectrum allocation in elastic optical networks

Capucho

Resendo

2013

2013 SBMO/IEEE MTT-S International Microwave &Amp; Optoelectronics Conference (IMOC)

View full text Add to dashboard Cite

This paper proposes an integer linear programming (ILP) formulation and an effective heuristic based on genetic algorithm (GA) for static routing and spectrum allocation (RSA) problem in spectrum-sliced elastic optical path network (SLICE� The RSA problem belongs to the class of problems called NP-Hard, and then approaches to achieve optimal solutions are limited to solve only small instances. For real networks optimal methods cannot give a solution in viable time, hence heuristic approaches are required. Then, we propose an ILP model and Genetic Algorithm (GA) to optimize the RSA problem in SLICE network. In spite of scalability problem an integer linear programming (ILP) formulation is presented, with the goal of attaining optima solutions for small networks andascertaining our heuristic's efficiency. In addition, it is presented a detailed analysis for G A's parameters.

show abstract

Towards Elastic and Fine-Granular Bandwidth Allocation in Spectrum-Sliced Optical Networks

Cited by 76 publications

References 14 publications

A Defragmentation-Ready Simulation Framework For Elastic Optical Networks

A Defragmentation-Ready Simulation Framework For Elastic Optical Networks

Bin-packing based optimisation of EON Networks with S-BVTs

ILP model and effective genetic algorithm for routing and spectrum allocation in elastic optical networks

Contact Info

Product

Resources

About