Jin-Ghoo Choi received the B.S., M.S., and Ph. D. degree in the school of Electrical Engineering \& Computer Science, Seoul National University in 1998, 2000, and 2005, respectively. From 2006 to 2007, he worked for Samsung Electronics as a senior engineer. In 2009, he was with the Department of Electrical \& Computer Engineering in The Ohio State University as a visiting scholar. He joined the Department of Information and Communication Engineering in Yeungnam University as a faculty member in 2010. His research interests include performance analysis of communication networks, packet scheduling policy in wireless networks, and wireless sensor network.