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L. Velasco, M. Klinkowski, M. Ruiz, V. López, G. Junyent (2012)
Elastic spectrum allocation for variable traffic in flexible-grid optical networksOFC/NFOEC
M. Klinkowski, K. Walkowiak (2011)
Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Path NetworkIEEE Communications Letters, 15
(2002)
1: Spectral grids for WDM applications: DWDM frequency grid
O. Pedrola, Luis Velasco, Alberto Castro, Juan Fernandez-Palacios, Davide Careglio, G. Junyent (2012)
CAPEX study for grid dependent multi-layer IP/MPLS-over-EON using relative BV-WSS costsOFC/NFOEC
Yang Wang, Xiaojun Cao, Yi Pan (2011)
A study of the routing and spectrum allocation in spectrum-sliced Elastic Optical Path networks2011 Proceedings IEEE INFOCOM
K. Christodoulopoulos (2010)
Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks - (Invited Paper)
M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, S. Matsuoka (2009)
Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologiesIEEE Communications Magazine, 47
M. Pióro, D. Medhi (2004)
Routing, flow, and capacity design in communication and computer networks
CPLEX http://www-01.ibm.com/software/integration/optimizat ion
(1989)
he joined Telefónica of Spain and was involved in the specifications and first office application of the Telefónica's SDH transport network
M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, Takafumi Tanaka, A. Hirano (2010)
Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network [Topics in Optical Communications]IEEE Communications Magazine, 48
His research interests include characterization, design and reoptimization of next-generation multilayer optical networks
SNDlib
Y. Sone, A. Watanabe, W. Imajuku, Y. Tsukishima, B. Kozicki, H. Takara, M. Jinno (2011)
Bandwidth Squeezed Restoration in Spectrum-Sliced Elastic Optical Path Networks (SLICE)IEEE/OSA Journal of Optical Communications and Networking, 3
K. Christodoulopoulos, I. Tomkos, E. Varvarigos (2011)
Elastic bandwidth allocation in flexible OFDM based optical networksIEEE J. Lightwave Technol., 29
M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, A. Hirano (2010)
Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path networkIEEE Commun. Mag., 48
C. Pavan, R. Morais, J. Rocha, A. Pinto (2010)
Generating Realistic Optical Transport Network TopologiesIEEE/OSA Journal of Optical Communications and Networking, 2
Flexgrid optical networks are attracting huge interest due to their higher spectrum efficiency and flexibility in comparison with traditional wavelength switched optical networks based on the wavelength division multiplexing technology. To properly analyze, design, plan, and operate flexible and elastic networks, efficient methods are required for the routing and spectrum allocation (RSA) problem. Specifically, the allocated spectral resources must be, in absence of spectrum converters, the same along the links in the route (the continuity constraint) and contiguous in the spectrum (the contiguity constraint). In light of the fact that the contiguity constraint adds huge complexity to the RSA problem, we introduce the concept of channels for the representation of contiguous spectral resources. In this paper, we show that the use of a pre-computed set of channels allows considerably reducing the problem complexity. In our study, we address an off-line RSA problem in which enough spectrum needs to be allocated for each demand of a given traffic matrix. To this end, we present novel integer lineal programming (ILP) formulations of RSA that are based on the assignment of channels. The evaluation results reveal that the proposed approach allows solving the RSA problem much more efficiently than previously proposed ILP-based methods and it can be applied even for realistic problem instances, contrary to previous ILP formulations.
Photonic Network Communications – Springer Journals
Published: Apr 27, 2012
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