中文摘要：

Liu Kai, received his B.S., M.S. and Ph.D. degree from Xidian University, China in 1994, 1997 and 2001, respectively. From Mar. 2000 to Feb. 2001, he was a visiting researcher at Shizuoka University, Hamamatsu, Japan. From Jan. 2002 to Feb.2004, he was a senior research associate at Illinois Institute of Technology, Chicago, USA. He is currently an associate professor at School of Electronics and Information Engineering, Beihang University, China. He is also a member of IEEE and senior member of CIE. His research interests include mobile ad hoc networks, wireless sensor networks, satellite networks, cognitive networks, cooperative networks and Intemet of Things. Email： liuk@buaa.edu.cn Wang Dongdong, received his B.S. degree of electronic and inforrmtion engineering in July 2011 from Jinan University, Guangzhou, China, He is currently a graduate student at School of Electronic and Information Engineering, Beihang Uni-versity, Beijing, China. His research interests include Medium Access Control （MAC） and cooperative MAC protocol in wireless networks and mobile ad hoc networks. Email： Boywang2007@ 163.com Liu Feng, received his M.S. and Ph.D. degree in control science and engineering from Xi＇an Jiaotong University, China in 1997 and 2000, respec- tively. Now he is a professor in School of Electronics and Information Engineering, Beihang University, China. His research interests include network and comrmnication theory, wireless sensor network and complex network. Email： liuf@buaa.edu.cn Wang Xin, received his B.S. degree in information theory and M.S. degree in conanunieation and electronic systems from Xidian University, China, in 1994 and 1997, respectively. He received his Ph. D. degree in cont0uter science fi-om Shizuoka University, Japan in 2002. He is currently a professor in the School of Computer Science at Fudan University, China. His research interests include wireless networks, peer-to-peer networks, and network architecture. Email： xinw@ fudan.edu.cn