He received B.S from Korea University and received his master’s degree in 2002 and Ph.D in 2008, both from Columbia University. There he studied with Prof. Henning Schulzrinne on VoIP in IEEE 802.11 Wireless Networking.

He worked at LG for three years and Samsung for six years. He also worked at ON.Lab as a visiting scholar and contributed to developing Segment Routing use case (CORD Fabric) using ONOS, which is shown at ONS '15. Now, he is working for SK Telecom in Korea and leading the SDN project at SW Research Lab.

His interests are Wireless Networking, SDN, and Home Networking. He published many papers on top conference and journals, including IEEE Infocomm, globcom, and TMC