Wu Xiaobo, Ph.D. candidate with the Department of Communication Engineering. School of Computer and Tclecommunication Engineering, University of Science and Technology Beijing, China. His research interests include space commununications and satellite networks routing protocol. Email:wuxiaobo1980@163.com Zhou Xianwei, professor with the Department of Communication Engineering, School of Computer and Communication Engineering, University of Science and Technology Beijing, China. He received his B.S. degree in Department of Mathematics from Southwest Normal University, China in 1986 and his M.S. degree in Department of System Science and Mathematics from Zhengzhou University, China in 1992, and in 1999 he obtained the Ph.D. degree in Department of Transportation Engineering from the Southwest Jiaotong University, China. He was engaged in postdoctoral study at School of Electronic and Information Engineering of Beijing Jiaotong University, China, from 1999 to 2001. His current research interests include space communications, wisdom networks, network security and intelligent transportation system. The corresponding author. Email: xwzhouli@ sina.com Lin Fuhong, post doctoral student at the School of Computer and Commnunication Enginecring, University of Science and Technology Beijing, China. His research interests include wisdom network, network architecture and Social network. Email: dr.lin.bjtu@ 139.com