He received his B.S. degree and Ph.D degree from Nankai University in 1999 and Chinese Academy of Sciences in 2004, respectively. He is author or coauthor of more than 50 journal and conference papers. He also has fifteen patents in China and has published one book on trusted network protocol. From 2009 to 2010, he was a visiting scholar at University of California, Los Angeles (UCLA), USA. He has served in technical committees of several national and international conferences. His current research interests include mobile network, network protocol and architecture.