MediaWiN 2008

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Keynote Speakers

July 6, 2008
Prof. Azzadine Boukerche (Bio)
Full Professor SITE
University of Ottawa
Prof. Azzadine Boukerche biography

The Next Generation Wireless Network Challenges for an Emergency Preparedness and Response Class of Applications: A Necessary Public Safty and Security.

Wireless sensor network and wireless multimedia network technologies combined with interactive 3D virtual visualization can converge into really interesting and functional applications such as detailed real-time monitoring of environments, emergency response and preparedness, distributed collaborative training, and remote walkthroughs, just to name a few examples. With the recent advances in wireless communication, and the proliferation of portable computer and micro-sensor devices, we are witnessing a growing interest in using wireless multimedia sensor networks and collaborative virtual environment technologies for safety and security class of applications.

In the first part of this talk, we will give an overview of some research projects related to emergency preparedness and response that are currently being investigated at the PARADISE Research Laboratory at the uOttawa. We will show how collaborative virtual environment, context aware computing, wireless multimedia, and wireless ad hoc and sensor networks can be used to ensure public safety and security. We will focus upon the design of large-scale distributed simulation system for applications that require critical condition monitoring using both location/context aware computing and wireless sensor technologies.

The second part of the talk will focus on the coverage problem in wireless sensor networks. How well a given area can be monitored by wireless multimedia sensor networks is a critical issue whose solution is required for successful deployment of many important applications on such networks. I will discuss some new results on coverage mechanisms, and show their effectiveness in identifying fully covered sensors, discovering blind holes and reaching reasonable coverage quality.

Lastly, and as time permits, the talk will conclude by presenting two testbeds that are currently under development at PARADISE: the LIVE testbed, and the SWiMNet testbed. LIVE is a testbed for applications that require emergency preparedness and response. LIVE's architecture integrates wireless sensor networks with wireless multimedia and virtual environment technologies. SWiMNet is a testbed of a high performance simulation system that supports very detailed and realistic model specifications to enable the design and evaluation of new protocols and applications for future generations of mobile ad hoc networks, as well as sensor networks.


Prof. Azzadine Boukerche biography

Dr. A. Boukerche, is a Full Professor of Computer Science and holds a Canada Research Chair Position at the University of Ottawa Prior to this, he was Faculty Member at the Dept. of Computer Sciences, University of North Texas. He also worked as a Senior Research Scientist at Metron Corp. located in San Diego, California, where he was leading several DoD projects on data distribution management for large-scale distributed and interactive systems. He also worked as a visiting scientist at Caltech/JPL-NASA, where he contributed to a project centered on the specification and verification of the software used to control interplanetary spacecraft operated by JPL/NASA Laboratory. He is the Founding Director of PARADISE Research Lab at uOttawa. His current research interests include Wireless Networks and Mobile Computing, Wireless Ad hoc and Sensor Networks, Wireless Multimedia, distributed management and security system for wireless and mobile networks, and large-scale distributed interactive simulations and collaborative virtual environment. He serves as an Associate Editor for the IEEE Transaction Distributed Systems, IEEE Transactions on Vehicular Technology, IEEE Wireless Communication Magazine, ACM/Springer Wireless Networks, Elsevier Ad Hoc Networks Journal, ELsevier Int'l Journal on Pervasive and Mobile Computing, Wiley Wireless Communication and Mobile Computing, Int'l Journal of Parallel and Distributed Computing (JPDC), and SCS Transactions on Simulation. He serves as a Program Co-Chair for Globecom 2008-Ad Hoc and Sensor Networking Symposium, and the Steering Committee Chair for ACM/IEEE MSWiM symposium. He is the recipient of several awards, including IEEE/ACM PADS Best Paper Award, The Ontario Distinguished Researcher Award, the prestigious Premier's Ontario Research Excellence (PREA) Award, and the George S. Glinski Award for Excellence in Research.



July 6, 2008
Ph.D. Saad Biaz (Bio)
Assistant Professor at the Department of Computer Science and Software Engineering Auburn University
Assistant Professor Ph.D. Saad Biaz

Success and Failures of "De-Randomized" Congestion losses

TCP congestion control is based on the premiss that a packet loss is an indicator of congestion. This design assumption is valid on most wired networks, but extremely detrimental on wireless networks: for all wireless losses, TCP unduly decreases its sending "rate". Therefore, researchers in the last 15 years tried to design loss discriminators that could diagnose the cause of a loss and appropriately react to each kind of loss (congestion or wireless). The key obstacle to END TO END diagnostic tools is that congestion losses appear as random as wireless losses: no pure end to end diagnostic tool accurately diagnoses the cause of a loss. A promising idea was to "de-randomize" congestion losses. In this talk, the "de-randomization" technique will be presented. This technique is very efficient and accurate on wired networks with one wireless (last) hop or on networks with no consecutive wireless links. But, on IEEE 802.11 ad hoc networks, this technique does not bring any improvement, and sometimes yields a lower performance than plain TCP (without loss diagnostic tool). The speaker will share the failures of de-randomizing congestions losses on IEEE 802.11 networks and describe how this work led him to focus first on improving the network and MAC layers in order for the de-randomization to work better. Finally, Dr. Biaz will outline the current trends in research on the network layer and MAC layers.


Prof. Saad Biaz biography

Prof. Saad Biaz biography Saad Biaz received a Ph.D. in Computer Science in 1999 from Texas A & M University and a Ph.D. in Electrical Engineering in 1989 from the University Henri Poincare in Nancy (France). He is presently an Associate Professsor of Computer Science and Software Engineering at Auburn University. He has held faculty positions at the Ecole Superieure de Technologie de Fes and Al Akhawayn University in Ifrane (Morocco). His current research is in the areas of distributed systems, wireless networking, and mobile computing. His research is funded by the National Science Foundation. Saad Biaz is a recipient in 1995 of the Excellence Fulbright Scholarship. Saad has served on the committees of several conferences and as editor for several journals. For more information, please visit



Last update: 26/6/2008

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