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R & D
- R & D activities
- Papers in Traffic Modelling Theory
- Papers in Network Optimisation/Design and Network Control
- Papers in Parallelism and Distributed Systems
Description of R & D activities:
With the support of senior researchers and high level consultants, QoS Design will offer you the best skills for R&D studies and research projects.
Multiple Research domains are covered :
- Signal Processing- Estimation
Non-Linear filtering, Hybrid Sensor, System Identification and Modelling, Turbo Coding, Particle Technics,
- Multidisciplinary Optimisation
Large Scale Optimisation, Non-Linear, Linear & Mixt exact Optimisation Methods, Combinatoric Optimisation, Direct Search Approches, Stochastic Dynamic Programming, Metaheuristics, Metamodels, Graph Theory,
- Modelling & Control Applied to Large Scale Systems
Automatic Control, Hierarchical & Multilayer Control, System Modelling, Dynamic Resource Management, Stochastic Modelling, Queueing Theory, Simulation Technics, Structural Design, Robustness Analysis, Finite Elements, Structural Dynamics, Aeroelasticity & Aerodynamics, reliability ...
Several Application Fields are Concerned:
- Telecommunications
Network Performance Modelling (Circuit & Packet Switched Systems), Traffic Simulation, Traffic Engineering, Network Design & Optimisation, Traffic estimation, Optimal Receivers,
- Aeronautics & Space Systems
Aircraft Maintenance, Aircraft Stability, Fligth-test Processing, Aircraft Fault Detection, Aircraft Engine Reliability & Maintenance Modelling, Optimal Trajectories for Aircrafts and Satellites, Aircraft Strength & Stress Computation, Orbital Station Keeping and Orbital Rendez-vous Problems, Constellation of Satellites, Interplanetary Trajectories,
- Computing
Grid Computing, ASP, Environments for Parallelism, Message Passing Communications, Client/server Implementation, Scientific Computing,
- Defense
Navigation Systems (GPS, Galiléo, LORAN-C), Detection Systems (RADAR, SONAR, ...), Control Problems ... For more information, please contact us by email at info@qosdesign.com
Modélisation du Trafic dans les réseaux de Télécommunications:
Publications scientifiques de l'équipe de recherche du LAAS-CNRS associée aux activités de la société QoS Design
J.M.GARCIA, J.C.HENNET, A.TITLI Optimization of routing in interurban telephone networks. Rapport LAAS N. 2492 Large Scale Systems Theory and Applications, Vol.2, N.4, pp.257-267, Novembre 1981.
B.GOPINATH, J.M.GARCIA, P.VARAIYA Blocking probability in a switching center with arbitrary routing policy. Rapport LAAS N. 3170 Bell Laboratories Technical Journal, Vol.63, N.5, pp.709-720, Juin 1984.
J.M.GARCIA, F.LE GALL, J.BERNUSSOU A model for telephone networks and its use for routing optimization purposes. Rapport LAAS N. 85259 IEEE Journal on Selected Areas in Communications. Special Issue on Communication Network Performance Evaluation,Vol.4, N.6, pp.966-974, Septembre 1986.
O. BRUN, JM GARCIA Analytical Solution of Finite Capacity M/D/1 Queues Journal of Applied Probability, Vol. 37, No 4, Décembre 2000
JM GARCIA, D. GAUCHARD, O. BRUN, P. BACQUET, J. SEXTON, E. LAWNESS Modélisation Différentielle et Simulation Hybride Distribuée Calculateurs Parallèles, Réseaux et Systèmes Répartis, 2002.
JM GARCIA, O. BRUN et D. GAUCHARD Transient Analytical Solution of M/D/1/N Queues, Journal of Applied Probability, Vol. 39, No 4, pp 853-864, Décembre 2002
O. BRUN , JM GARCIA. C. BOCKSTAL Hyperexponential Approximation for GPS Systems with an Arbitrary Number of Traffic Classes En soumission
J.BERNUSSOU, J.M.GARCIA, I.BONATTI, F.LE GALL Modelling and control of a large scale telecommunication network. Rapport LAAS N. 2390 8th Triennal World Congress IFAC, Kyoto (Japon), 24-28 Août 1981, pp.1471-1477.
F.LE GALL, J.M.GARCIA, J.BERNUSSOU A one moment model for telephone traffic. Application to blocking estimation and resource allocation. Rapport LAAS N. 3014 Second International Symposium on the Performance of Computer Communications Systems, Zurich (Suisse), 21-23 Mars 1984. Performance of Computer-Communication Systems, eds. H.Rudin, W.Bux, North Holland, 1984, pp.159-171 .
F.LE GALL, J.BERNUSSOU, J.M.GARCIA A one moment model for telephone networks with dependence on link blocking probabilities. Rapport LAAS N. 3196 10th Anniversary Symposium IFIP WG 7.3 "Performance'84", Paris (France), 19-21 Décembre 1984, pp.449-458.
F.LE GALL, J.BERNUSSOU, J.M.GARCIA A state dependant one moment model for grade of service and traffic evaluation in circuit-switched networks. Rapport LAAS N. 85230 11th International Teletraffic Congress, Kyoto (Japon), 4-11 Septembre 1985, pp.5.2B/2.1-5.2B/2.6.
O. BRUN, JM . GARCIA, Modélisation Dynamique du Trafic dans les Réseaux MultiServices (MSR'2001), Toulouse, Septembre 2001, Juanole G. et Valette R. Eds, Hermes.
JM . GARCIA, P. BACQUET Technique Avancées de Simulation ECOTEL 2002, Golf Juan, décembre 2002
JM. GARCIA HA-DUC Le, D. GAUCHARD, O. BRUN, Modélisation Analytique Du Protocole Tcp New Reno Et Etude Comparative Avec Le Simulateur Ns (Network Simulator), Congrès RIF'03, Hanoi, Vietnam, 10 au 13 Février 2003
F. CHAUVET & JM. GARCIA, Optimisation de Coeur de Réseau IP/DiffServ/MPLS, Conférence invitée, Algotel 2003, Banyuls sur mer, 12-14 mai 2003.
P. BACQUET, O. BRUN, J.M. GARCIA, T. MONTEIL, P. PASCAL & S. RICHARD, Telecommunication Network Modeling and Planning Tool on ASP clusters, International Conference on Computational Science 2003 (ICCS'2003), Saint Petersbourg, Russie et Melbourne, Australie, 2 au 4 Juin 2003.
Optimisation/Design and Control of Telecommunication Networks:
Publications scientifiques de l'équipe de recherche du LAAS-CNRS associée aux activités de la société QoS Design
J.M.GARCIA, J.C.HENNET, A.TITLI Optimization of routing in interurban telephone networks. Rapport LAAS N. 2492 Large Scale Systems Theory and Applications, Vol.2, N.4, pp.257-267, Novembre 1981.
J.M.GARCIA, B.GOPINATH, P.VARAIYA Routing traffic in telephone networks. Rapport LAAS N. 2622 20th IEEE Conference on Decision and Control, San Diego (USA), 16 Décembre 1981.
J.BERNUSSOU, J.M.GARCIA, I.BONATTI, F.LE GALL Modelling and control of a large scale telecommunication network. Rapport LAAS N. 2390 8th Triennal World Congress IFAC, Kyoto (Japon), 24-28 Août 1981, pp.1471-1477.
G.BEL, P.CHEMOUIL, J.M.GARCIA, F.LE GALL, J.BERNUSSOU Adaptive traffic routing in telephone networks. Rapport LAAS N. 85181 Large Scale Systems, Vol.8, N.3, pp.267-282, Juin 1985.
P.CHEMOUIL, P.GAUTHIER, J.BERNUSSOU, J.M.GARCIA, F.LE GALL, G.BEL, C.CASTEL Acheminement adaptatif dans les réseaux téléphoniques : méthodes et évaluation de performances. Rapport LAAS N. 87099 Annales des Télécommunications, Vol.42, N.1-2, pp.53-75, Février 1987.
J.BERNUSSOU, J.M.GARCIA Switching networks: real time management. Rapport LAAS N. 87329 Systems and Control Encyclopedia: Theory, Technology, Applications, Ed.Pergamon Press, 1987, pp.4733-4741 (Vol.7).
F.LE GALL, J.M.GARCIA, J.BERNUSSOU Dynamic routing for telephone networks: an overview. Rapport LAAS N. 2933 First International Workshop on "Methodologies and Applications of Complex System Theory", Le Caire (Egypte), 15-17 Novembre 1983.
J.BERNUSSOU, F.LE GALL, J.M.GARCIA Optimisation et acheminement dynamique dans les réseaux téléphoniques. Rapport LAAS N. 3073 Conférence invitée. 6ème Conférence Internationale sur l'Analyse et l'Optimisation des Systèmes, INRIA, Nice (France), 19-22 Juin 1984.
J.M.GARCIA, F.LE GALL, C.CASTEL, P.CHEMOUIL, P.GAUTHIER, G.LECHERMEIER Comparative evaluation of centralized/distributed traffic routing policies in telephone networks. Rapport LAAS N. 85229 11th International Teletraffic Congress, Kyoto (Japon), 4-11 Septembre 1985, pp.5.1A/4.1-5.1A/4.6. J.M.GARCIA, F.LE GALL, J.BERNUSSOU Adaptive traffic routing in telephone networks centralized and decentralized approaches. Rapport LAAS N. 85350 Second IASTED International Conference Telecommunication and Control (TELECON'85), Rio de Janeiro (Brésil), 10-13 Décembre 1985, pp.6-10. G. AUTHIE, JM. GARCIA, O. BRUN Dimensionnement et Routage Optimal dans les Réseaux Haut-Débit SDH 2ème Ecole d'Hiver des Télécommunications de Sophia Antipolis (ECOTEL'99), 6-10 Décembre 1999. O. BRUN, JM . GARCIA, Resource Allocation in Communication Networks 5th International Conference on High-Speed Networks and Multimedia Communications, Jeju Island, Corée, 3 au 5 Juillet 2002. JM. GARCIA, A. RACHDI et O. BRUN, Optimal LSP Placement with QoS Constraints in DiffServ/MPLS Networks, 18th International Teletraffic Congress (ITC'18), Haus am Köllnischen Park, Berlin, Allemagne, 31 Août au 5 Septembre 2003. G. Authié Multicommodity network flow optimization : centralized and distributed algorithms, chapter 6 in Bernussou J. / Titli A. : "Interconnected Dynamical Systems : Stability, Decomposition and Decentralisation", North Holland, 1982, pp. 253-327. J. Bernussou, G. Authié, J.L. Calvet et D. El Baz, Routage distribué dans les réseaux de communication, RAIRO Automatique, vol. 18, no. 2, 1984, pp. 161-172.
F. Daniel and G. Authié, Shortest Paths Multiplicity in Generalized De Bruijn and Kautz Networks, Parallel Processing Letters, vol. 3, no. 4, 1994, pp. 363-374.
G. Authié, J. Bernussou and D. El Baz, Distributed asynchronous iterative control algorithms. Optimal routing application, IFAC Symposium CIDCS, Paris, december 9-11, 1982.
D. El Baz and G. Authié, Distributed algorithms for optimal routing in a packet-switched computer network : shortest path and non linear flow problems, First International Workshop on Methodologies and Applications of Complex System Theory, Cairo, november 15-17, 1983.
J. Bernussou and G. Authié, Distributed adaptive routing algorithms for communication networks, IFAC/IMACS International Symposium "Distributed Intelligence Systems. Methods and Applications", Varna, Bulgaria, june 27-july 1, 1988.
J.M. Garcia and G. Authié, Issues on Parallel Architectures and Parallel Computing, Tutorial, ASI'96 : Advanced Summer Institute in Life Cycle Approaches to Production Systems : Management, Control, Supervision, Toulouse, France, June 2-6, 1996, rapport LAAS 96387.
G. Authié, E. Landes, J.F. Ereau et F. Adolphe Resource Management in Low Earth Orbit Satellite Systems ECCO XIII Conference (European Chapter on Combinatorial Optimization), Capri, Italy, May 18-20, 2000, pp. 63-64.
C. M.F. Carlson, G. Authié Optimized Design of LMDS Cells: Site Location, Equipment Sizing and Users Homing, MWCN2001: Third IEEE International Conference on Mobile and Wireless Communications Networks, Recife, Brazil, 14-17 august 2001, pp. 111-118.
C. M.F. Carlson, G. Authié A model with link-efficiency parameters for optimal location and sizing of LMDS sites, DRCN2001: Third IEEE International Workshop on Design of reliable Communication Networks, Budapest, Hungary, 7-10 october 2001, pp. 42-49. G. Authié, E. Landes, J.F. Ereau et F. Roussel Frequency assignment in a low-earth orbit satellite constellation ECCO XV Conference (Conference of the European Chapter on Combinatorial Optimization), Lugano, Switzerland, 30 May - 1 June 2002.
G. Authié, E. Landes, J.F. Ereau et F. Adolphe Allocation Dynamique de Liens dans une Constellation de Satellites à Orbite Basse ALGOTEL'2000, Actes des deuxièmes rencontres francophones sur les Aspects Algorithmiques des Télécommunications, La Rochelle, France, 10-12 mai 2000, pp. 143-148.
G. Authié, E. Landes, J.F. Ereau et F. Adolphe Une méthode appeochée pour la planification des canaux de communication dans une constellation de satellites Actes de l'école d'hiver iHPerf2000 (Applications Parallèles Hautes Performances), Aussois, 4-8 décembre 2000, pp. 207-214.
Parallelism and Distributed Systems:
Publications scientifiques de l'équipe de recherche du LAAS-CNRS associée aux activités de la société QoS Design J.L.CALVET, J.DANTAS DE MELO, J.M.GARCIA Parallelism in dynamic programming and control Rapport LAAS N°88334 Numerical Linear Algebra Digital Signal Processing and Parallel Algorithms, Vol.70, NATO ASI Series F : Computer and Systems Sciences, Ed. GH.Golub, PV.Dooren, Springer Verlag, 1991, pp.435-441 NATO Advanced Study Institute on Linear Algebra, Digital Signal Processing and Parallel Algorithms, Louvain (Belgique), 1-12 Août 1988 (Résumé) J.M.GARCIA, F.LACASSAGNE Programmation Dynamique Rapport LAAS N°94398 Almgorithmes Parallèles. Analyse et conception, Hermès, 1994, pp.312-321 J.M.GARCIA, F.LACASSAGNE Optimisation du speed-up et équilibrage dynamique de méthodes itératives partitionnées Rapport LAAS N°95482 Parallélisme et applications irrégulières, Hermès, 1995, pp.158-166 J.M.GARCIA, T. MONTEIL Un modèle d'observation et de prédiction de charge pour le placement de tâches du système Network-Analyser Ouvrage: Placement dynamique et répartition de charge: application aux systèmes répartis et parallèles. Coordonné par G. Bernard, J. Chassin de Kergommeaux, B. Folliot, C. Roucairol, Collection didactique INRIA, Décembre 1996. J.M.GARCIA, G.AUTHIE Tutorial: issues on parallel architectures and parallel computing Rapport LAAS N°96387 Conférence invitée, 1996 Advanced Summer Institute (ASI'96), Toulouse (France), 2-6 Juin 1996, 9p. T.MONTEIL, J.M.GARCIA Task Allocation Strategies on Workstations using Processor Load Prediction Rapport LAAS N° 97217 Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, PDPTA'97, Las Vegas (USA), 30 juin-3 juillet 1997, Vol.1, pp. 416-421. JM. GARCIA, D. GAUCHARD, T. MONTEIL, O. BRUN Processor Mapping given by Processor and Network Load Prediction 5th International Euro-Par Conference, Europar'99, Toulouse, France, Septembre 1999, pp. 291-294. Lecture notes in computer science 1685, Europar'99 Parallel Processing, Eds P. Amestoy, P. Berger, M. Daydé, I. Duff, V. Frayssé, L. Giraud, D. Ruiz, Springer, ISBN N°3-540-66443-2. Rapport LAAS N°99243. JM. GARCIA, D. GAUCHARD, T. MONTEIL, O. BRUN Communication Kernel for High Speed Networks in the Parallel Environment LANDA-HSN 1st IEEE Computer Society International Workshop on Cluster Computing (IWCC'99), Rajkumar Butta et al. Eds,2-3 Décembre 1999, Melbourne, Australie. Rapport LAAS N° 99365. D. GAUCHARD, C. FOURNIE, T. MONTEIL, JM GARCIA, B. LECUSSAN, O. BRUN Communication mechanisms for Myrinet and MPC in the parallel environment LANDA-HSN 1st Myrinet User Group Conference (MUG'2000), Lyon, 28-29 Septembre 2000. T. MONTEIL, P. PASCAL Task allocation using processor load prediction on multiprocessors cluster NATO Advanced Research Workshop. Advanced environments, Tools and Applications for Cluster Computing, Mangalia (Roumanie), 1-6 Septembre 2001, 9p . P. PASCAL, T. MONTEIL Modélisation d'un réseau haut débit pour la gestion de ressources en calcul haute performance 5ièmes Journées Doctorales Informatique et Réseaux (JDIR'2002), Toulouse (France), 4-6 Mars 2002, pp.251-260 G. AUTHIE, J.M. GARCIA, T. MONTEIL, P. PASCAL, S. RICHARD, G. GAYOLA, B. LECOINTE, P. BACQUET, J.M. PAROT Projet CASP : Cluster for Application Service Provider Congrès RNTL, Toulouse, octobre 2002. J.M. GARCIA, T. MONTEIL, CASP : Cluster for Application Service Provider Workshop Grille de Calcul, LAAS-CNRS, décembre 2002. J.M. GARCIA, T. MONTEIL CASP : Cluster for Application Service Provider Workshop Grille de Calcul, LAAS-CNRS, décembre 2002 P. PASCAL, T. MONTEIL influence of deterministic customers in time sharing Scheduler Operating Systems Review, Vol.37, No1, pp.34-45, Janvier 2003 P. BACQUET, O. BRUN, J.M. GARCIA, T. MONTEIL, P. PASCAL & S. RICHARD, Telecommunication Network Modeling and Planning Tool on ASP clusters, International Conference on Computational Science 2003 (ICCS'2003), Saint Petersbourg, Russie et Melbourne, Australie, 2 au 4 Juin 2003. J. BERNUSSOU, F. LE GALL and G. AUTHIE, About some iterative synchronous and asynchronous methods for Markov chain distribution computation, IFAC 87 10th World Congress, 27-31th july, 1987. T. GAYRAUD and G. AUTHIE, A parallel algorithm for the all pairs shortest path problem, Proceedings of the International Conference on Parallel Computing'91, Advances in Parallel Computing, p. 107-114, Elsevier Science Publishers, 1992. T. GAYRAUD and G. AUTHIE, A parallel algorithm for the minimum spanning tree problem, Proceedings of the PDCom'91 International Conference on Parallel and Distributed Computing in Engineering Systems, p. 91-96, Elsevier Science Publishers, 1992.
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