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Start Over Author "E. Le Rouzic" Topic 0202 electrical engineering, electronic engineering, information engineering
9 results on '"E. Le Rouzic"'

1. Demonstration of a Multivendor Path Computation with Optical Feasibility Combining GMPLS and Open Source

Author

Julien Meuric, Cédric Ware, Jean-Luc Auge, E. Le Rouzic, K. Ndiaye, and Luay Alahdab

Subjects
Optical amplifier, Computer science, Computation, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 02 engineering and technology, 01 natural sciences, 010309 optics, 020210 optoelectronics & photonics, Open source, 0103 physical sciences, Path (graph theory), 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Protocol (object-oriented programming)
Abstract

Openness and interoperability are a challenge in optical networks, especially when it comes to lightpath optical performance estimation. We propose to use a vendor-agnostic open-source tool and extend the OSPF-TE protocol with the required parameters.

Published
2019

2. Easy Optical Defragmentation with SDN Controlled Tunable Transmitter

Author

Patricia Layec, B. Haentjens, E. Le Rouzic, L. Brameriet, Arnaud Carer, Dominique Verchere, Arnaud Dupas, Q. Pham Van, Nokia Bell Labs [Nozay], Institut des Fonctions Optiques pour les Technologies de l'informatiON (Institut FOTON), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Algorithmes et architectures adaptatifs pour les systèmes sans-fils efficaces en énergie (GRANIT), ARCHITECTURE (IRISA-D3), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Vectrawave, Orange Labs, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)

Subjects
Service (systems architecture), Computer science, business.industry, Transmitter, 020206 networking & telecommunications, 02 engineering and technology, 01 natural sciences, 010309 optics, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Defragmentation, business, Computer hardware
Abstract

International audience; To ease automatic optical spectrum defragmentation, we present a programmable SDN controlled 100Gbit/s transmitter prototype with a fast wavelength and bitrate switching capabilities. It can be tuned in 0.5 ms over all C-band and used for service hitless defragmentation application.

Published
2018

3. Optical Power Control to Efficiently Handle Flex-Grid Spectrum Gain over Existing Fixed-Grid Network Infrastructures

Author

Djamel Amar, E. Le Rouzic, Bernard Cousin, Jean-Luc Auge, Nicolas Brochier, Mohamad Kanj, Institut de Recherche Technologique b-com (IRT b-com), Orange Labs [Lannion], France Télécom, Advanced technologies for operated networks (ADOPNET), Université de Rennes (UR)-Télécom Bretagne-RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES (IRISA-D2), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Télécom Bretagne-RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES (IRISA-D2), CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), and Université de Rennes (UNIV-RENNES)

Subjects
Engineering, Optical power budget, Grid network, Optical power, 02 engineering and technology, 01 natural sciences, 010309 optics, Networking, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], 020210 optoelectronics & photonics, Path Computation Algorithm, Optical networks, 0103 physical sciences, Power Control, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Optical amplifier, business.industry, Amplifier, Spectral efficiency, Optical performance monitoring, Link Design, Flex-Grid, GMPLS, business, Power control
Abstract

International audience; The exponential traffic growth in optical networks has triggered the evolution from Fixed-Grid to Flex-Grid technology. This evolution allows better spectral efficiency and spectrum usage over current networks in order to facilitate dynamic and huge traffic demands. The integration of Flex-Grid technology increases the number of optical channels established over optical links, leading, however, to an increase in amplification power and possibly saturating optical amplifiers. In this work, we propose a power adaptation process that takes advantage of link optical signal to noise ratio (OSNR) margins to allow network operators to support this power increase while maintaining the use of legacy amplifiers. Results show that controlling channel optical power benefits from the Flex-Grid in terms of spectrum and capacity gain using in-place amplifier infrastructure.

Published
2016

4. An integrated view on monitoring and compensation for dynamic optical networks: from management to physical layer

Author

E. Le Rouzic, Jose A. Lazaro, Antônio Lúcio Teixeira, Lourena E. Costa, Carmen Vázquez, Ioannis Tomkos, Kyriakos Vlachos, Siamak Azodolmolky, Philippe Gravey, Szilard Zsigmond, T. Loukina, Julio Montalvo, Gerald Franzl, G.M. Tosi-Beleffi, and Tibor Cinkler

Subjects
Dynamic network analysis, Dynamic networks, Computer Networks and Communications, Computer science, Reliability (computer networking), Network management and routing, 02 engineering and technology, Optical performance monitoring, 020210 optoelectronics & photonics, 0202 electrical engineering, electronic engineering, information engineering, Network performance, Electrical and Electronic Engineering, Network architecture, business.industry, Physical layer, 020206 networking & telecommunications, Network layer, Impairment compensation, Atomic and Molecular Physics, and Optics, Reliability engineering, Network management, Hardware and Architecture, Electrónica, business, Software, Computer network
Abstract

A vertical perspective, ranging from management and routing to physical layer options, concerning dynamic network monitoring and compensation of impairments (M&C), is given. Feasibility, reliability, and performance improvements on reconfigurable transparent networks are expected to arise from the consolidated assessment of network management and control specifications, as a more accurate evaluation of available M&C techniques. In the network layer, physical parameters aware algorithms are foreseen to pursue reliable network performance. In the physical layer, some new M&C methods were developed and rating of the state-of-the-art reported in literature is given. Optical monitoring implementation and viability is discussed. Publicado

Published
2009

5. Building a low-energy, transparent optical wide areanetwork with multipaths

Author

R-M Indre, James Roberts, E. Le Rouzic, Davide Cuda, Télécom ParisTech, Orange Labs [Meylan], Orange Labs, Networks, Algorithms and Probabilities (RAP), Inria Paris-Rocquencourt, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Laboratory of Information, Network and Communication Sciences (LINCS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut Mines-Télécom [Paris] (IMT)

Subjects
Circuit switching, Engineering, Dynamic bandwidth allocation, Computer Networks and Communications, business.industry, Distributed computing, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Overlay network, 020206 networking & telecommunications, 02 engineering and technology, Optical burst switching, Network traffic control, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], 020210 optoelectronics & photonics, Packet switching, Burst switching, Wide area network, 0202 electrical engineering, electronic engineering, information engineering, Computer Science::Networking and Internet Architecture, business, Computer network
Abstract

International audience; We propose an all-optical networking solution for a wide area network built on shared multipoint-to-multipoint lightpaths that, for short, we call "multipaths." A multipath concentrates the traffic of a group of source nodes on a wavelength channel using an adapted medium access control protocol and multicasts this traffic to a group of destination nodes that extract their own data from the confluent stream. The proposed network can be built using existing components and appears less complex and more efficient in terms of energy consumption than alternatives like optical packet switching and optical burst switching. The paper presents the multipath architecture and compares its energy consumption to that of a classical router-based Internet service provider network. A flow-aware dynamic bandwidth allocation algorithm is proposed and shown to have excellent performance in terms of throughput and delay.

Published
2013

6. Physical layer aware network architecture for the future internet

Author

Antonio Serrador, T. Frantti, Luis M. Correia, E. Le Rouzic, P. Mannersalo, G. Nunzi, Filipe D. Cardoso, and N. Genay

Subjects
Computer Networks and Communications, Network security, Computer science, 050801 communication & media studies, 02 engineering and technology, computer.software_genre, 0508 media and communications, 0202 electrical engineering, electronic engineering, information engineering, Wireless, Electrical and Electronic Engineering, Internet, Network architecture, Access network, business.industry, Physical layer aware, 05 social sciences, Physical layer, 020206 networking & telecommunications, Virtualization, Computer Science Applications, Information and Communications Technology, The Internet, business, Telecommunications, computer, Computer network
Abstract

In this article, physical layer awareness inaccess, core, and metro networks is addressed,and a Physical Layer Aware Network Architec-ture Framework for the Future Internet is pre-sented and discussed, as proposed within theframework of the European ICT Project4WARD. Current limitations and shortcomingsof the Internet architecture are driving researchtrends at a global scale toward a novel, secure,and flexible architecture. This Future Internetarchitecture must allow for the co-existence andcooperation of multiple networks on commonplatforms, through the virtualization of networkresources. Possible solutions embrace a fullrange of technologies, from fiber backbones towireless access networks. The virtualization ofphysical networking resources will enhance thepossibility of handling different profiles, whileproviding the impression of mutual isolation.This abstraction strategy implies the use of wellelaborated mechanisms in order to deal withchannel impairments and requirements, in bothwireless (access) and optical (core) environ-ments. info:eu-repo/semantics/publishedVersion

Published
2012

7. Enhancing GMPLS Signaling Protocol for Encompassing Quality of Transmission (QoT) in All-Optical Networks

Author

Nicola Sambo, Alessio Giorgetti, E. Le Rouzic, Filippo Cugini, Piero Castoldi, J. Poirrier, Nicola Andriolli, and Luca Valcarenghi

Subjects
Routing protocol, Computer science, Resource Reservation Protocol, computer.internet_protocol, business.industry, Distributed computing, Quality of service, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020206 networking & telecommunications, Multiprotocol Label Switching, 02 engineering and technology, Network topology, Blocking (statistics), Atomic and Molecular Physics, and Optics, Signaling protocol, 020210 optoelectronics & photonics, Transmission (telecommunications), 0202 electrical engineering, electronic engineering, information engineering, business, computer, Computer network
Abstract

In this paper, quality of transmission (QoT)-aware lightpath provisioning schemes for transparent optical networks are proposed and assessed. The main idea is to overcome lightpath blocking due to excessive physical impairments (i.e., unacceptable QoT) by means of successive lightpath set up attempts performed by generalized multiprotocol label switching (GMPLS) signaling protocol along alternate routes. The schemes are enabled by the introduction into current GMPLS signaling protocol [i.e., resource reservation protocol with traffic engineering (RSVP-TE)] of extensions which encompass the QoT parameters that characterize the optical layer. Differently from previous approaches, the proposed GMPLS-based schemes are still distributed but they do not imply the introduction of additional extensions into the routing protocol (e.g., OSPF-TE). The QoT-aware provisioning schemes are first validated by simulations performed on a WDM mesh network. Results show that only few successive set up attempts are required to complete the lightpath establishment. In addition, an experimental demonstration where the proposed RSVP-TE extensions are implemented in the control plane of a transparent metro network is reported showing that impairment-aware lightpath provisioning is achieved on a time scale of few milliseconds.

Published
2008

8. Probe-based schemes to guarantee lightpath quality of transmission (QoT) in transparent optical networks

Author

E. Le Rouzic, Piero Castoldi, J. Poirrier, Isabella Cerutti, Nicola Sambo, Filippo Cugini, C. Pinart, and Luca Valcarenghi

Subjects
Routing protocol, Engineering, business.industry, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020206 networking & telecommunications, Data_CODINGANDINFORMATIONTHEORY, 02 engineering and technology, Blocking (statistics), 020210 optoelectronics & photonics, Atmospheric measurements, Quality (physics), Transmission (telecommunications), 0202 electrical engineering, electronic engineering, information engineering, Bit error rate, business, Computer network
Abstract

Two probe-based schemes are proposed to dynamically guarantee lightpath QoT in transparent optical networks. Low blocking and fast set up times are achieved within few lightpath set up attempts.

Published
2008
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9. Algorithms for the Multi-Period Power-Aware Logical Topology Design With Reconfiguration Costs

Author

Luca Chiaraviglio, Edoardo Bonetto, E. Le Rouzic, and Filip Idzikowski

Subjects
Engineering, Optimization problem, Computer Networks and Communications, business.industry, Distributed computing, Logical topology, Control reconfiguration, 020206 networking & telecommunications, 02 engineering and technology, Network topology, Passive optical network, Power (physics), Set (abstract data type), 020210 optoelectronics & photonics, 0202 electrical engineering, electronic engineering, information engineering, Heuristics, business, Algorithm
Abstract

We tackle the problem of reducing power consumption in IP-over-WDM networks, targeting the power-aware logical topology design (LTD). Unlike the previous work in the literature, our solution reduces the power consumption with consideration of the cost (in terms of reconfigured traffic) incurred when the network is reconfigured. We first formulate the LTD with reconfiguration costs as an optimization problem. Then, we present three heuristics to effectively solve it. We compare our algorithms over an extensive set of networks and scenarios. Results indicate that our algorithms are effective in reducing power consumption while limiting the amount of traffic that is reconfigured. Moreover, we show that the input parameters are intuitive and easy to set, which makes our algorithms more practical.

Published
2013

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