On the benefits of multi-path recovery in flexgrid optical networks
Photonic Network Communications, 2014 We propose a new recovery scheme, called multi-path recovery (MPR), specifically designed for flexgrid-based optical networks. It combines protection and restoration schemes to jointly recover, in part or totally, the bitrate requested by client demands in case of failure.
Castro Casales, Alberto +3 more
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How national IP/MPLS networks can benefit from flexgrid optical technology? [PDF]
, 2013 We design a 1113-node network and show that the optimum is a large Flexgrid core serving small metro areas.
Junyent Giralt, Gabriel +3 more
core +2 more sources
Performance Evaluation of Light-Tree Schemes in Flexgrid Optical Networks
IEEE Communications Letters, 2014 Peer ...
Ruiz Ramírez, Marc +1 more
openaire +3 more sources
Power Excursion Mitigation for Flexgrid Defragmentation With Machine Learning
Journal of Optical Communications and Networking, 2017 Flexgrid optical networking relies on spectrum defragmentation to groom channel wavelengths and improve spectral efficiency. Various defragmentation methods—hop, make-before-break, and sweep—interact with the power dynamics of erbium-doped fiber amplifiers (EDFA) differently and result in undesired power excursions that exacerbate the post-EDFA power ...
Yishen Huang +3 more
openaire +1 more source
Serving Multicast Requests on Single-Layer and Multilayer Flexgrid Networks
Journal of Optical Communications and Networking, 2015 Advanced services require a high bitrate, e.g., multigigabit, multicast connectivity beingprovided by core transport networks. Multicast services can be supported either by one single tree connecting the source to every destination of the multicast request or by a set of paths.
Ruiz Ramírez, Marc +1 more
openaire +3 more sources
Solving Large Instances of the RSA Problem in Flexgrid Elastic Optical Networks [PDF]
Journal of Optical Communications and Networking, 2016 We present an optimization procedure that mixes advanced large-scale optimization methods and heuristics to solve large instances (with over 1.7 million integer variables) of the routing and spectrum allocation (RSA) problem-a basic optimization problem in flexgrid elastic optical networks.
Miroslaw Klinkowski +5 more
openaire +3 more sources
An in-operation planning tool architecture for flexgrid network re-optimization
2014 16th International Conference on Transparent Optical Networks (ICTON), 2014 In-operation network planning consists in re-optimizing a network, currently being operated to transport traffic, either minimizing resource utilization or maximizing the transported traffic. In the context of flexgrid optical networks re-optimization includes spectrum defragmentation, virtual topology reconfiguration, etc.
Gifre Renom, Lluís +4 more
openaire +2 more sources
Multiple Fiber, Flexgrid Elastic Optical Network Design using MaxEnt Optimization
, 2015 We demonstrate how maximum entropy (MaxEnt) allocation strategies can optimally determine links within a flexgrid elastic optical network requiring multiple fiber-pairs to support 100% capacity growth with 34.3% improvement in the uniformity of spectrum ...
Andrew Lord +5 more
core +1 more source
First experimental demonstration of ABNO-driven in-operation flexgrid network re-optimization [PDF]
, 2014 The after failure repair optimization problem is used to experimentally validate in-operation planning using the ABNO architecture to control a flexgrid optical network.
Cugini, Filippo +15 more
core +1 more source
Mapping time-varying IP traffic to flexible optical paths in flexgrid optical networks [PDF]
, 2015 A spectrum slot is the frequency range allocated to a single channel within a flexible grid, and its width needs to be an integer multiple of the so-called slot width granularity.
Akar, N., Tunc C.
core +1 more source