IST E-NEXT project @ RUN
ULg IST E-NEXT project RUN
Network of Excellence in Emerging Networking Experiments and Technologies


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Network of Excellence on Emerging Networking Experiments and Technologies

The E-NEXT Network of Excellence targets a key area of Information Society Technologies, namely computer networking.

E-NEXT aims to integrate a critical mass of expertise and to re-structure research practice such that Europe can take a lead in computer networking and act as a world force in this area. The main objectives of this NoE will be: the development of a virtual research centre to integrate the world-class research of the members and to stimulate the exchange of personnel, the education and training of personnel inside and outside the network, the dissemination of research results and in general the spreading of excellence, and the stimulation of innovation by appropriate technology transfer into existing and new companies, both large and small.

E-NEXT will achieve these objectives through its management structure consisting of network and country coordination committees, and six workpackages: network coordination, joint research, integration and training, distributed work environment, spreading excellence, and dissemination.

Project home page

http://www.ist-e-next.net/

Our Unit is involved in all research WGs and is co-chairing the task force on Traffic Engineering in WG4 (Self-Aware Networking).

Current research topics of ULg/RUN (under construction)

1. Traffic Engineering

2. Active/programmable networks

3. Wireless and mobile networks

4. Congestion control (for video, multicast, wireless, fairness)

Publicly available tools (under construction)

Jahmm

This is a Java implementation of Hidden Markov Model (HMM) related algorithms. It has been designed to be easy to use and general purpose.

Activated Jsim

This is a modified version of j-sim (formerly known as 'javasim') to support RUN Active Network Simulator (see below). The main differences are in the information availability within OSPF package and the modification at the Core Switch Layer to log routing decision in packets histories

RANS: RUN Active Network Simulator

This is a collection of packages that allow ANTS capsules to be processed on simulated nodes within j-sim (and ssf-net). It comes with a collection of tools to ease topology generation and results lookup through a tiny HTTP server using graphviz:dot as backend. It also comes with dRADAR, the neighbours discovery service which can be activated separately on any active nodes and will ease the work on automatically-generated heterogeneous topologies.

Publications

* Enhancement of TCP over wired/wireless networks with packet loss classifiers inferred by supervised learning
I. El Khayat, P. Geurts and G. Leduc
Wireless Networks, vol. 16, nb. 2, Feb. 2010, pp. 273-290
(ISI IF 2008 = 1.194)
* Traffic Engineering an Operational Network with the TOTEM Toolbox
S. Balon, J. Lepropre, O. Delcourt, F. Skivée and G. Leduc
Keywords : BGP, IP, MPLS, TE, TOTEM, Traffic Engineering
Read the abstract
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IEEE Transactions on Network and Service Management (TNSM), vol. 4, nb. 1, Jun. 2007, pp. 51-61
* Predictable Disruption Tolerant Networks and Delivery Guarantees
J.-M. François and G. Leduc
Keywords : Predictable Disruption Tolerant Network
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Technical Report, published on arXiv (cs.NI/0612034 v1)
* The Interaction of IGP Weight Optimization with BGP
S. Cerav-Erbas, O. Delcourt, Bernard Fortz and Bruno Quoitin
Keywords : BGP, IGP, Traffic Engineering
Read the abstract
Proc. of ICISP (International Conference on Internet Surveillance and Protection), 29-31 Aug. 2006, Cap Esterel, France
* Prédiction de mobilité par le mobile ou par le point d'accès: comparaison sur base de traces réelles
J.-M. François and G. Leduc
Keywords : Mobile Networks, Mobility prediction, QoS
Mots-clés : Prédiction de mobilité, QoS, Réseaux mobiles
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Lisez le résumé
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Actes de Colloque Francophone sur l'Ingénierie des Protocoles (CFIP 2006), 30 Oct.-3 Nov. 2006, Tozeur, Tunisie
(Acceptance ratio = 28/75 = 37%)
* Transport Protocols for Next Generation Networks
Congduc Pham and G. Leduc
Annals of Telecommunications, nbs. 1-2, Jan-Feb 2006, pp. 2-4
Guest editors of this special issue
* Dividing the Traffic Matrix to Approach Optimal Traffic Engineering
S. Balon and G. Leduc
Keywords : IP, MPLS, Optimal Routing, Traffic Engineering
Read the abstract
Proc. of 14th IEEE International Conference on Networks (ICON 2006), 13-15 Sep. 2006, Singapore, Singapore
(Acceptance ratio = 101/261 = 38%)
* A scalable heuristic for hybrid IGP/MPLS traffic engineering - Case study on an operational network
F. Skivée, S. Balon and G. Leduc
Keywords : hybrid IP/MPLS, MPLS, Simulated Annealing, TOTEM, Traffic Engineering
Read the abstract
Proc. of 14th IEEE International Conference on Networks (ICON 2006), 13-15 Sep. 2006, Singapore, Singapore
(Acceptance ratio = 101/261 = 38%)
* TOTEM: A TOolbox for Traffic Engineering Methods
J. Lepropre, S. Balon and G. Leduc
Read the abstract
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Demonstration at INFOCOM'06, 23-29 April 2006, Barcelona, Spain.
* On the accuracy of analytical models of TCP throughput
I. El Khayat, P. Geurts and G. Leduc
Proc. of IFIP International Networking Conference, 15-19 May 2006, Coimbra, Portugal, LNCS, 3976, pp. 488-500
(Acceptance ratio = 88/440 = 20%, Best Paper Award)
* How Well Do Traffic Engineering Objective Functions Meet TE Requirements?
S. Balon, F. Skivée and G. Leduc
Keywords : Objective Function, Traffic Engineering
Proc. of IFIP International Networking Conference, 15-19 May 2006, Coimbra, Portugal, LNCS, 3976, pp. 75-86
(Acceptance ratio = 88/440 = 20%)
* The Critical Neighbourhood Range for Asymptotic Overlay Connectivity in Ad Hoc Networks
S. Calomme and G. Leduc
Keywords : ad hoc networks, connectivity, overlay, topology control
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Ad Hoc & Sensor Wireless Networks, vol. 2, nb. 2, 2006, pp. 169-187
* Providing public intradomain traffic matrices to the research community
Steve Uhlig, Bruno Quoitin, J. Lepropre and S. Balon
Keywords : intra-domain traffic matrices, traffic statistics
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ACM SIGCOMM Computer Communication Review, vol. 36, nb. 1, Jan 2006, pp. 83-86
(ISI IF 2006 = 0.578)
* A scalable and decentralized fast-rerouting scheme with efficient bandwidth sharing
S. Balon, L. Mélon and G. Leduc
Keywords : Backup LSP, Fast Recovery, MPLS, Resource Sharing
Read the abstract
Computer Networks, vol. 50, nb. 16, Nov. 2006, pp. 3043-3063
(ISI IF 2006 = 0.631)
* A survey of optimal network congestion control for unicast and multicast transmission
N. Bonmariage and G. Leduc
Computer Networks, vol. 50, nb. 3, Feb. 2006, pp. 448-468
(ISI IF 2006 = 0.631)
* An Open Source Traffic Engineering Toolbox
G. Leduc, H. Abrahamsson, S. Balon, S. Bessler, M. D'Arienzo, O. Delcourt, J. Domingo-Pascual, S. Cerav-Erbas, I. Gojmerac, X. Masip, A. Pescapè, B. Quoitin, S. P. Romano, E. Salvadori, F. Skivée, H. T. Tran, S. Uhlig and H. Ümit
Computer Communications, vol. 29, nb. 5, March 2006, pp. 593-610
(ISI IF 2006 = 0.444)
* Interpreted Active Packets for Ephemeral State Processing Routers
S. Martin and G. Leduc
Keywords : active network, ephemeral state, network processor
Mots-clés : état éphémère, network processor, réseaux actifs
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Proc. of 7th IFIP International Working Conference on Active and Programmable Networks (IWAN), 21-23 Nov. 2005, Sophia Antipolis, France, D. Hutchison, S. Denazis, L. Lefevre, G. J. Minden (eds.), Active and Programmable Networks, LNCS, 4388, pp. 156-167, Springer
(Acceptance ratio for full papers = 13/72 = 18%, ISI IF 2005 LNCS = 0.402)
* Comparing traffic engineering objective functions
S. Balon, F. Skivée and G. Leduc
Keywords : Objective Function, Traffic Engineering
Read the abstract
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Proc. of Co-Next 2005, Student Workshop, 24-27 Oct. 2005, Toulouse, France, pp. 224-225
* Entropy-based knowledge spreading and application to mobility prediction
J.-M. François and G. Leduc
Keywords : Entropy, Information Theory, Mobility Prediction, QoS
Mots-clés : Entropie, prédiction de mobilité, QoS, théorie de l'Information
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Proc. of ACM International conference on Emerging Network Experiments and Technologies (Co-Next), 24-27 Oct. 2005, Toulouse, France, pp. 10-20, ACM Press
(Acceptance ratio = 21/110 = 19%)
* The Critical Neighbourhood Range for Asymptotic Overlay Connectivity in Dense Ad Hoc Networks
S. Calomme and G. Leduc
Read the abstract
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Proc. of Fourth Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net), 21-24 Jun. 2005, Porquerolles, France, IFIP book series, 197/2006, pp. 179-188, Springer Boston
* An Active Platform as Middleware for Services and Communities Discovery
S. Martin and G. Leduc
Keywords : Active networks, Platform, Service discovery
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Proc. of 2nd International Workshop on Active and Programmable Grids Architectures and Components (APGAC), 22-25 May 2005, Atlanta, USA, V. S. Sunderam, G. Dick van Albada, P. M. A. Sloot, et al. (eds.), Computational Science – ICCS 2005, Part III, LNCS, 3516, pp. 237-245, Springer-Verlag
(ISI IF 2005 LNCS = 0.402)
* Improving TCP in wireless networks with an adaptive machine-learnt classifier of packet loss causes
I. El Khayat, P. Geurts and G. Leduc
Keywords : Machine Learning, TCP, Wireless
Mots-clés : Apprentissage automatique, Réseaux sans fil, TCP
Read the abstract
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Proc. of IFIP International Networking Conference, 2-6 May 2005, Waterloo, Ontario, Canada, R. Boutaba, K. Almeroth, R. Puigjaner, S. Shen, J. Black (eds.), Networking 2005, LNCS, 3462, pp. 549-560, Springer-Verlag
(Acceptance ratio = 24%, ISI IF 2005 LNCS = 0.402)
* Architecture d'une boîte à outils d'algorithmes d'ingénierie de trafic et application au réseau GEANT
F. Skivée, S. Balon, O. Delcourt, J. Lepropre and G. Leduc
Mots-clés : MPLS, Boîte à outils, DAMOTE, Géant, Ingénierie de trafic
Read the abstract
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Actes de Colloque Francophone sur l'Ingénierie des Protocoles (CFIP), 29 Mar.-1 Avr. 2005, Bordeaux, France, Richard Castanet (ed.), Ingénierie des protocoles - Qualité de service, multimédia et mobilité, pp. 317-332, Hermès Lavoisier
(Acceptance ratio = 33/108 = 30.6%)
* Mobility prediction's influence on QoS in wireless networks: a study on a call admission algorithm
J.-M. François and G. Leduc
Keywords : admission control, call blocking, mobility prediction
Read the abstract
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Proc. of 3rd International Symposium on Modeling and Optimization in Mobile, Ad-hoc and Wireless Networks (WiOpt), 3-7 Apr. 2005, Trentino, Italy, Ravi R. Mazumdar, Ioannis Stavrakakis (eds.), pp. 238-247, IEEE press
(Acceptance ratio = 31 %)
* Techniques d'apprentissage dans le contrôle de congestion : Amélioration de TCP et conception de protocoles multipoints, dans les réseaux filaires et hybrides
I. El Khayat
Doctoral Thesis, University of Liège
Collection des Publications de la Faculté des Sciences Appliquées de l'Université de Liège, nr. 257, 2005, 207 pp.
Download the PDF document
* A Machine Learning Approach to Improve Congestion Control over Wireless Computer Networks
P. Geurts, I. El Khayat and G. Leduc
Read the abstract
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Proc. of The Fourth IEEE International Conference on Data Mining (ICDM 2004), 1-4 Nov. 2004, Brighton, UK, R. Rastogi, K. Morik, M. Bramer et X. Wu (eds.), pp. 383-386, IEEE Press
* Performance Study of an Overlay Approach to Active Routing in Ad Hoc Networks
S. Calomme and G. Leduc
Keywords : active, ad hoc, overlay
Read the abstract
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Proc. of The Third Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2004), 28-30 Jun. 2004, Bodrum, Turkey, I.F. Akyildiz, E. Cayirci, E. Ekici and G. Morabito (eds.), pp. 24-35
* A Distributed Algorithm for Weighted Max-Min Fairness in MPLS Networks
F. Skivée and G. Leduc
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Proc. of 11th IEEE International Conference on Telecommunications (ICT'2004), 1-6 Aug. 2004, Fortaleza, Brazil, J. Neuman de Souza, P. Dini, P. Lorenz (eds.), Telecommunications and Networking, LNCS, 3124, pp. 644-653, Springer Verlag
(ISI IF 2004 LNCS = 0.513)
* TCP Vegas-like algorithm for layered multicast transmission
O. Ait-Hellal and G. Leduc
Read the abstract
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Proc. of International Conference on Communications in Computing (CIC 2004), 21-24 Jun. 2004, Las Vegas, Nevada, USA, pp. 58-64, CSREA Press
* Learning movement patterns in mobile networks: a generic approach
J.-M. François, G. Leduc and S. Martin
Keywords : Hidden Markov Model, Mobility prediction
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Proc. of European Wireless 2004, 24-27 Feb. 2004, Barcelona, Spain, pp. 128-134

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