He is actively involved in the research of high speed networks, network control and management, and network applications. He has about 60 publications in peer reviewed journals and conferences. He is involved in the standardization of Generalized Multi-Protocol Label Switching (GMPLS) performance measurement in IETF, and co-authors RFC 6777 and RFC 5814. He has served as an invited speaker on many international conferences and is member of Technical Program Committee of a number of technical conferences, and organizer of the Sino-Korea Workshop on IPTV and NGN (2007-2010).