Wei Gong: He received the B.S. degree from the Department of Computer Science and Technology, Huazhong University of Science and Technology, and the M.S. and Ph.D. degrees from the School of Software and Department of Computer Science and Technology, Tsinghua University. He is currently a Professor with the School of Computer Science and Technology, University of Science and Technology of China. His research interests include backscatter networks, edge systems, and the IoT applications. Jiangchuan Liu: He received the B.Eng. degree (cum laude) in computer science from Tsinghua University, Beijing, China, in 1999, and the Ph.D. degree in computer science from The Hong Kong University of Science and Technology in 2003. He is currently a University Professor with the School of Computing Science, Simon Fraser University, BC, Canada. He is also a NSERC E.W.R. Steacie Memorial Fellow. He was a co-recipient of the Inaugural Test of Time Paper Award of IEEE INFOCOM in 2015, the ACM SIGMM TOMCCAP Nicolas D. Georganas Best Paper Award in 2013, and the ACM Multimedia Best Paper Award in 2012. He has served on the Editorial Boards of IEEE/ACM TRANSACTIONS ON NETWORKING, IEEE TRANSACTIONS ON BIG DATA, IEEE TRANSACTIONS ON MULTIMEDIA, IEEE COMMUNICATIONS SURVEYS AND TUTORIALS, and IEEE INTERNET OF THINGS JOURNAL. He is also a Steering Committee Member of IEEE TRANSACTIONS ON MOBILE COMPUTING. Weiqi Wu: He received the B.S. degree from the Department of Computer Science and Technology, Anhui University of Science and Technology (AUST). He is currently pursuing the Ph.D. degree with the Department of Computer Science and Technology, University of Science and Technology of China. His research interests include ambient backscatter communication and wireless sensor networks.