Prof. Ban received his B.S. and M.S. degrees in the Department of Electronic Engineering, Kyungpook National University, Korea, in 1998 and 2000, respectively, and the Ph.D. degree in the Department of Electrical and Electronic Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, in 2010. He was researcher and network engineer in Korea Telecom (KT) from 2000 to 2012. In KT, he researched about 3G WCDMA, LTE , and Femto systems and contributed to the commercialization of them. He was also responsible for traffic engineering and spectrum strategy. He is currently an associate professor of Department of Information and Communication Engineering, Gyeongsang National University, Korea.