I am an Assistant Professor in the Department of Computer Science and Engineering at the Ohio State University. I received my Ph.D in Computer Science at University of California, Los Angeles in 2013. Prior to UCLA, I had worked as an associate/assistant researcher in the Wireless and Networking Group at Microsoft Research Asia (MSRA) between 2005 and 2009. My research interests are in the broad areas of mobile networking, system and security, with a focus on 3G/4G mobile networks, wireless networking, mobile sensing systems, and network security.