Zhang Haitao, received the B.S. degree in mathe- matics from Dalian University of Technology, China, in 2006, and the M .S. degree in computer science from Northeastern University, China, in 2008. He was a visiting Ph.D. student at theWireless Networking Laboratory, Department of Computer Science, Illinois Institute of Technology, USA (2010/10-2011/ 10). He is currently pursuing the Ph.D. degree in the School of Computer, Beijing University of Posts and Telecommunica- tions, China. His research interests include wireless sensor net- works, Intemet of Things, and multimedia technology. Email: zhht.83 @ gmail.com Ma Huadong, received the B.S. degree in Mathe- matics from Henan Normal University in 1984, the M .S. degree in Computer Science from Sheny- ang Institute of Computing Technology, Chinese Academy of Sciences in 1990 and the Ph.D. degree in Computer Science from Institute of Computing Tech- nology, Chinese Academy of Sciences in 1995. He is currently a professor and director of Beijing Key Laboratory of InteUi- gent Telecommunications Software and Multimedia, Executive Dean of School of Computer Science, Beijing University of Posts and Telecommunications, China. He visited UNU/IIST as research fellow in 1998 and 1999, respectively. From 1999 to 2000, he held a visiting position in the Department of Elec- trical Engineering and Computer Science, University of M ichigan, Ann Arbor, Michigan. He was a visiting Professor at Uni- versity of Texas at Arlington from July to September 2004, and a visiting Professor at Hong Kong University of Science and Technology from Dec. 2006 to Feb. 2007. His current re- search focuses on multimedia system and networking, Internet of Things and sensor networks, and he has published over 100 papers and 4 books on these fields. Email: mhd@bupt.edu.cn