Challenges in the Design of Energy-aware Real-time Systems
A number of energy-constrained embedded and mobile systems are designed for real-time use. It is then necessary to guarantee the correct operation of the system by jointly managing two types of constraints: time and energy. Dynamic voltage and frequency scaling (DVFS) and Dynamic power management (DPM) are two major techniques for reducing energy consumption in such embedded systems. We will give an overview of the state-of-the-art on energy-aware scheduling algorithms proposed for real-time systems. A special emphasis will be placed on new generation embedded systems such as wireless sensor nodes that have been proliferating in recent years. For many of these systems, not only energy minimization but also energy autonomy is a key issue. The technology of energy harvesting, which consists of capturing energy from the environment to power a system, makes it possible in particular to provide these resource-constrained embedded systems with the capacity for energy self-sufficiency.
Audrey Queudet is an Associate Professor in computer engineering at Nantes Université (France) since 2007. She graduated in computer engineering at Polytechnic School of the University of Nantes (France) in 2002. She obtained her Ph.D. in computer science from the University of Nantes in 2006. From october 2006 to august 2007, she held a post-doctoral researcher position at Polytechnic University of Valencia, Spain. She obtained the degree of Habilitation à Diriger des Recherches in Computer Science in 2021.
She is conducting her research within the Real-Time System Research group at Laboratoire des Sciences du Numérique de Nantes (LS2N, UMR CNRS n°6004), France. Her research interests include real-time scheduling theory, quality of service mechanisms, energy-constrained embedded systems, and Linux-based real-time operating systems and applications.