LI ZHAO received his B.S. degree and Ph.D. degree from Tsinghua University, Beijing, China, in 1997 and 2002, respectively. He currently serves as an Associate Professor at the Research Institute of Information Technology, Tsinghua University, China. His current research interests include mobile computing, Internet of Things (IoT), e-health system, intelligent transportation systems (ITS), home networking, machine learning and digital multimedia.