RAZAFINDRALAMBO , Tahiry

Anytime and anywhere network access can be provided by Unmanned Aerial Vehicles (UAV) with air-to-ground and air-to-air communications using directional antennas for targets located on the ground. Deploying these Unmanned Aerial Vehicles to cover targets is a complex problem since each target should be covered, while minimizing (i) the...

Dans cet article, nous étudions le problème de couverture de cibles au sol par des drones. Le but est de minimiser le nombre de drones déployés et de maximiser la qualité des communications radio afin de collecter efficacement l'information des cibles au sol jusqu'à une station de base centrale. Nous modélisons ce problème à l'aide d'un...

In this paper, we tackle the optimal energy replenishment problem (OERP) using a given number of flying drones, in order to efficiently recharge wireless sensor nodes. We present a linear program that maximizes the amount of harvested energy to the sensors. We show that the model is solved to optimality in a few seconds for sensor networks with...

Data collection is an important mechanism for wireless sensor networks to be viable. This paper addresses the Aerial Data Collection Problem (ADCP) from a set of mobile wireless sensors located on the ground, using a fleet of flying devices. The objective is i) to deploy a set of Unmanned Aerial Vehicles (UAVs) in a 3D space to cover and...

In this work, we address the optimization problem of covering a set of mobile sensors with a fleet of flying devices. The goal is to deploy a connected set of Unmanned Aerial Vehicles (UAVs) continuously monitoring the mobile sensors and reporting information to a fixed base station for efficient data collection. We propose an effective...

Dans cette article, nous présentons un modèle d'optimisation pour le problème de couverture de capteurs mobiles par des drones. Le but est de déployer des drones de manière à collecter efficacement des données depuis des capteurs mobiles vers une station de base au cours du temps. Nous proposons un modèle se résolvant par génération de...

International audience

Lifetime is the main issue of wireless sensors net-works. Since the nodes are often placed in inaccessible places, thereplacement of their battery is not an easy task. Moreover, thenode maintenance is a costly and time consuming operation whenthe nodes are high in numbers. Energy harvesting technologieshave recently ...