Zsehong Tsai（蔡志宏） received his B.S. degree in electrical engineering from National Taiwan University (NTU), Taipei, in 1983, and the M.S. and Ph.D. degrees from the University of California, Los Angeles, in 1985 and 1988, respectively. During 1988-1990, he worked as a Member of Technical Staff at AT&T Bell Laboratories, where he investigated performance aspects of network management systems. Since 1990, he has been with the Department of Electrical Engineering and Graduate Institute of Communication Engineering of NTU, where he is currently a professor.
During 1998-2004, he joined National Telecommunication Program Office (NTPO) of National Science Council (NSC), R.O.C. as the leader of the Broadband Internet Research Group. Dr. Tsai has been active in Telecommunication deregulations since Taiwan started the liberalization process of its telecomm market. For many years, he was a member of Telecommunications Advisory Board (TAB) of Ministry of Transportation and Communications (MOTC), Taiwan, R.O.C. During 2002-2004, he was assigned by MOTC to serve in the Board of Directors of Chunghwa Telecom(CHT). During 2004-2017, he then served as an independent director of CHT.
During 2004-2006, he was the Deputy Executive Secretary of STAG(Science and Technology Advisory Group) of the Executive Yuan. During 2009-2014, he also served as the Deputy Executive Officer of the Networked Communication Program of NSC. Starting 2017, he became the Executive Secretary of the Office of Science and Technology of the Executive Yuan.
Dr. Tsai's academic research interests include broadband network, performance analysis and network planning. His recent research directions also cover topics in spectrum planning, spectrum sharing and telecommunication policies. Dr. Tsai is a receipt of the CIE (Chinese Institute of Engineers) Technical Paper Award in 1997.