Taesang Choi received his M.S. and Ph.D. degrees in computer science and telecommunications from the University of Missouri-Kansas City in 1990 and 1995, respectively. In 1996, he joined ETRI, where he is currently a Principal Research Staff. He has been actively involved in the research and development of traffic engineering, traffic measurement and analysis, SDN/NFV management, 5G network slice management, 5G management data analytics, and 5G multi-access load balancing. He has also actively contributed in various SDOs and open source activities, such as IETF, ITU-T, ONF, and ONOS. He is currently acting as ITU-T SG13 Question 6 (QoS for Future Networks) Rapporteur and International IT Standardization Expert representing South Korea.