Abdallah Makhoul : "Energy Efficient Data Collection and Processing..."

Defense Research Habilitation : "Energy Efficient Data Collection and Processing for Large-Scale Wireless Sensor Networks."

Abstract : Wireless sensor networks (WSN) produce a huge amount of data that needs to be gathered, processed, and transmitted according to the application objectives. This document describes data collection and processing in large scale WSN from data acquisition to data fusion and survivability. Our main objectives are to reduce the amount of data traffic, filter redundant measurements, and make predictions and inferences in a WSN with energy, storage capacity, computing power and communications bandwidth resource constraints. Data collection and prediction algorithms are proposed which significantly reduce the size of the collected and transmitted data by adapting the sampling  and transmission rates of the sensors. Then, we present three data aggregation techniques to eliminate redundant data sets generated by neighbouring nodes. In addition, we provide information fusion techniques by exploiting the synergy among the collected data. They are based on fuzzy logic and aim to obtain information of greater quality and make accurate decisions. An epidemic model based approach for data survivability is then studied. It consists on preserving data for a long period of time in unattended WSN. Finally, the proposed methods were evaluated on real-world data sets collected at our laboratory and compared to recent related approaches. The results were promising in quality of data collection and transmission reduction.

 Composition of the Jury: Pr. Lynda Mokdad, Université Paris-Est Val de Marne (Rapporteur), Pr. Ye-Qiong Song, Université de Lorraine (Rapporteur),Pr. Djamal Benslimane, Université Claude Bernard Lyon 1 (Rapporteur), Pr. Congduc Pham, Université de Pau (Examinateur), Pr. Hamamache Kheddouci, Université Claude Bernard Lyon 1 (Examinateur), Pr Jacques Bahi, Université de Bourgogne Franche-Comté (Examinateur), Pr Raphaël Couturier, Université de Bourgogne Franche Comté (Examinateur)

Localisation : Amphi 3 du Bâtiment D - Génie Civil de l'IUT Belfort-Montbéliard, 19 avenue du Maréchal Juin à Belfort.