Liao Jianxin was born in 1965, obtained his PhD degree at University of Electronics Science and Technology of China in 1996. He is presently a professor of Beijing Uni- versity of Posts and Telecommunications. He has published hundreds of papers in different journals and conferences. His research interests are mobile intelligent network, broadband intelligent network and 3G core networks. Li Yuanzhen was born in 1979, obtained his B.S. degree from Nanjing University of Science and Technology, 2004. He is cur- rently working toward the Ph.D. degree at the State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications. His research interests include communications software, Next Generation Network, and multimedia communication. Li Tonghong was born in 1968, obtained his PhD degree from Beijing University of Posts and Telecommunications in 1999. He is currently an assistant professor with the department of computer science, Techni- cal University of Madrid, Spain. His main research interests include resource management, distributed system, middleware, wireless networks, and sensor networks. Zhu Xiaomin was born in 1974, obtained his PhD degree from Beijing University of Posts and Telecommunications in 2001. Now he is an associate professor in Beijing University of Posts and Telecommunica- tions. His major is Telecommunications and Information Systems. His research interests span the area of intelligent networks and next-generation networks with a focus on 3G core network and protocol conversion. He has published over 110 papers, among which there are more than 30 first-authored ones, in different journals and conferences. Zhang Lei was born in 1974, obtained his PhD degree from Beijing University of Posts and Telecommunications in 2004. He is currently a lecturer in Beijing University of Posts and Telecommunications. His main research interests include mobile intelligent network, 3G network and services.