Chi (Harold) Liu is a Full Professor and Assistant Dean at the School of Software, Beijing Institute of Technology, China. Before that, he was a staff researcher and project manager of wireless and internet of things (IoT) at IBM Research - China. He holds a PhD degree from Imperial College, UK, and a B.Eng. degree from Tsinghua University, China. Before joining IBM Research, he worked as a postdoctoral researcher at the Deutsche Telekom AG in Berlin, Germany, and a visiting researcher at IBM T.J. Watson Research Center, Hawthorne, NY.

Yan Zhang received his PhD degree from the School of Electrical and Electronic Engineering at Nanyang Technological University, Singapore, and is employed by Simula Research Laboratory, Lysaker, Norway. He is on the editorial board of many international journals and currently serves as the ＂Wireless Networks and Mobile Communications＂ book series editor. He also is serving as co-editor for several books. His research interests include resource, mobility, energy, and security management in wireless networks and mobile computing. He is a member of IEEE and IEEE ComSoc.