DEPARTMENT OF BUSINESS DATA NETWORKS AND TELECOMMUNICATIONS

Professor Jean-Pierre ARNAUD

Research

Mobile ad-hoc networks

The research concerns the OLSR (Optimized Link State Routing) routing protocol compared with AODV and DSR routing protocols. Based on static and mobile topologies, the simulations allow us to focus on new parameters (power conservation, optimal routing) into ad-hoc routing protocols.

Mobile IPv6

Due to the frequent change of the location of the mobile nodes, Mobile IP handover causes evident signalling overhead, handover latency and packet loss, which in turn leads to the service degradation of real time constrained traffic. Our works focus on a new solution - Extended of the Handover Control Function - that would support fast handover and low packet loss. In addition of handover issues, quality-of-service (QoS) and security are also our open research issues that should be addressed in future wireless networks.

IEEE 802.11e

In order to support voice service where and when users want, we assert that wire/wireless LAN networks can be of great interest.However, QoS for real time application (voice, video ...) is not supported at moment. The goal of these studies aim at evaluating existent IEEE 802.11e performance with a new dynamical register user list.

Mesh networks

Current works deal with Community-based multi-hop wireless networks via embedded systems. The connectios rely on IEEE 802.11 and DSL being deployed in individual groups, for example, a group dedicated to an event/meeting... It is important because it allows free flow of information without any moderation or selective rate control. Compared to some classical networks that are centrally managed, mesh networks allow everyone in the neighborhood to contribute to the network ressources and to cooperate.

WiMAX IEEE 802.16

Current works deal with a better understanding of WiMAX technology: protocols, behaviour at each level, interactions between layers, performance, number of users, uses for applications. Right now, our work focuses on low layers of Wimax based architectures. As IEEE 802.16-2005 technology supports both MAC and Physical layers, we expect to evaluate the influence of radio communication on its performance. This study will be based on an existing physical simulator that we are looking for. We will experiment the "connection" of the results provided by the physical simulator to the Wimax Opnet software. Next, we wish to study the functionalities at MAC layer such as QoS support, WiMax MAC protocol and security.

Teaching

In the context of computer network design teaching course Ingénierie de réseaux d'entreprise ( RSX207 / RSX208 ), students have to write a study and explainationabout Wifi interference and technical behaviour of multiple mixed TCP/UDP flows with different kinds of physical technology with/without Quality-of-Service (QoS): 802.3 (switch, hub) and 802.11 (infrastructure, ad hoc, mixed). They generate traffic and collect statistics with the open source tools iperf and gnuplot on those physical media. Afterwards, they repeat the same experience with OPNET and compare the results obtained by observation and simulation. The students must do six noted exercises:

Authored papers

H. Costantini, S. Boumerdassi. "Social Mobility Models Realism versus Real Traces". In the 2012 IEEE Wireless Communications and Networking Conference (WCNC 2012). "En cours de publication" (to be published shortly). apr. 2012. Paris, France.

L. Harfouche, H. Costantini, S. Boumerdassi. "Social Mobility Models with ACS and Implementation in OLSR and AODV". In the 22nd IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). pp. 2279-2283. sep. 2011. Toronto, Canada.

P. Krzanik. "Dimensionnement de réseaux WiMAX avec le simulateur OPNET". Mémoire d'ingénieur. sep. 2010. Conservatoire National des Arts et Métiers. Paris. France.

L. Harfouche, S. Boumerdassi, É. Renault. "Weighted Social Manhattan: Modeling and Performance Analysis of a Mobility Model". In the 21st IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). pp. 2019-2023. sep. 2010. Istambul. Turkey.

L. Harfouche, S. Boumerdassi. "Towards an Environment Aware Formalization for Mobility Modelling in MANET." The 2009 International Conference on Wireless Networks (ICWN09). Las Vegas.

H. Costantini et S. Boumerdassi, "802.11e standard in ad hoc network: QoS, Disabling Acknowlegment, " In IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, Victoria, Canada, Au, pp. 588-593, IEEE publisher, aug.2009.

P. Krzanik, A. Wei, E. Gressier-Soudan, "Communication WiMAX en milieu maritime - Supervision de champs d’éoliennes, " In OCOSS'07 (Innovation dans les techniques pour l'observation des côtes et des océans : senseurs, modélisations et systèmes), Paris, France, 26-27 June, 2007.

Dehoey, Laurent; Carcelle, Xavier; Boumerdassi, Selma, "Performances and Limits of an Experimental Implementation of Mobile Ad-Hoc Networks Using Standardized Protocols, " In Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on Volume , Issue , 21-25 Sept. 2007 Page(s):1475 - 1478.

G.Z. Wei, A. Wei, B. Geller and G. Dupeyrat, “Fast MIP Handover Amelioration in Wireless Networks by Cross-layer Solution, ” In Proceedings of IEEE NGMAST 2008 (Next Generation Mobile Applications, Services and Technologies), Cardiff, Wales, UK, 16-19 September 2008.

A. Wei, G.Z. Wei and B. Geller, “Improving Mobile Ipv6 Handover in Wireless Network with E-HCF, ” In Proceedings of IEEE Vehicular Technology Conference, VTC'08, Calgare, Canada, 21-24 September 2008.

OPNET Technologies, Inc.

OPNET Technologies, Inc. is a leading provider of solutions for managing networks and applications. OPNET's best-in-class solutions address application troubleshooting, application monitoring, network monitoring, network configuration management, capacity management, and network simulation. OPNET’s solutions have been operationally proven in thousands of customer environments worldwide, including corporate and government enterprises, government and defense agencies, network service providers, and network equipment manufacturers. For more information about OPNET and its products, visit www.opnet.com.