Old Dominion University
A to Z Index   |   Directories

College of Sciences

Computer Science


Computer Science Department News

The Computer Science Department will be hosting a colloquium on Friday, November 30, 2010 in the E&CS Building first floor auditorium.


TIME: 10:00 (DONUTS) 10:10 (TALK)

Using Mobility in k-Covered Wireless Sensor Networks:A Curse or Blessing - or Blessing Curse?

Habib M. Ammari

Wireless Sensor and Mobile Ad-hoc Networks (WiSeMAN) Research Lab

Department of Computer and Information Science

University of Michigan-Dearborn

Abstract: The energy sink-hole problem is inherent to immobile wireless sensornetworks with constant data reporting. In this type of network, the sensorsnearer the sink are responsible for forwarding data on behalf of all othersensors, thus, suffering from a severe battery power depletion problem. In thistalk, we present our study of the energy sink-hole problem in k-coveredwireless sensor networks, where each point in a field of interest is covered byat least k sensors simultaneously. To remedy this type of problem, we introduceanother dimension - sensor mobility - so the neighbors of a sink change overtime. Specifically, we suggest the use of mobile proxy sinks to collect datafrom the sensors and deliver it to an immobile sink. Thus, our proposedthree-tier architecture has immobile sensors, immobile sinks, and mobile proxysinks. First, we present our fundamental results for the design of k-coveredwireless sensor networks. Second, we provide the first formal analysis of theperformance of joint mobility and routing in this type of network. Precisely,we investigate the best mobility strategy of mobile proxy sinks to minimize thetotal energy consumption due to data collection. Third, we describe our jointmobility and routing schemes based on the number of immobile sinks and mobileproxy sinks, and give a thorough analytical model for them. Finally, we discussour main question whether sink mobility in k-covered wireless sensor networksis a curse or blessing - or blessing curse.

Biosketch: Habib M. Ammari is an Associate Professor and the Founding Directorof Wireless Sensor and Mobile Ad-hoc Networks (WiSeMAN) Research Lab, in theDepartment of Computer and Information Science at the University ofMichigan-Dearborn, since September 2011. He obtained his second Ph.D. degree inComputer Science and Engineering from the University of Texas at Arlington, inMay 2008, and his first Ph.D. in Computer Science from the Faculty of Sciencesof Tunis, in December 1996. He published his first Springer book "Challengesand Opportunities of Connected k-Covered Wireless Sensor Networks: From SensorDeployment to Data Gathering," in August 2009. He received several prestigiousawards, including the Certificate of Appreciation Award at the ACM MobiCom2011, the Outstanding Leadership Award at the IEEE ICCCN 2011, the BestSymposium Award at the IEEE IWCMC 2011, the Lawrence A. Stessin Prize forOutstanding Scholarly Publication from Hofstra University in May 2010, theFaculty Research and Development Grant Award from Hofstra College of LiberalArts and Sciences in May 2009, the Best Paper Award at EWSN in 2008, and theBest Paper Award at the IEEE PerCom 2008 Google Ph.D. Forum. He is therecipient of the Nortel Outstanding CSE Doctoral Dissertation Award in February2009, and the John Steven Schuchman Award for 2006-2007 Outstanding Research bya PhD Student in February 2008. He received a three-year US National ScienceFoundation (NSF) Research Grant Award, in June 2009, and the US NSF CAREERAward, in January 2011. He serves as Associate Editor of several internationaljournals, including ACM TOSN and IEEE TC. Also, he has served asProgram/Publicity Chair of numerous IEEE and ACM conferences, symposia, andworkshops.