Tijani Chahed is a professor in the Networks and Services department in Telecom SudParis, France. He holds BS and MS degrees in Electrical and Electronics Engineering from Bilkent University, Turkey, PhD and Habilitation a Diriger des Recherches (HDR) degrees in Computer Science from the University of Versailles and the University of Paris 6, France, respectively. His research interests are on quality of service and teletraffic engineering, notably in wireless networks.