Selected Professional Services
Referee for Journals
IEEE Transactions on Computers, IEEE/ACM Transactions on Networking, IEEE Transactions on Communications, IEEE Transactions on Mobile Computing, IEEE Transactions on Wireless Communications, IEEE Transactions on Vehicular Technology, IEEE Communications Letters, Elsevier Computer Networks, Elsevier Communications, International Journal of Distributed Sensor Networks, International Journal of Security and Networks .Member of Technical Program Committees for Conferences/Workshops
IEEE INFOCOM, 2008-2010
IEEE Conference on Distributed Computing Systems (ICDCS), 2010
IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2010
IEEE Symposium on Reliable Distributed Systems (SRDS), 2009
IEEE International Conference on Mobile Ad Hoc and Sensor Systems (MASS), 2008
ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness (QShine), 2008, 2009
International Conference on Parallel Processing (ICPP), 2007
IEEE Global Telecommunications Conference (GLOBECOM), 2007
IEEE International Performance Computing and Communications Conference (IPCCC), 2007
International Conference on Computer Communications and Networks (ICCCN), 2007- 2009
International Conference on Scalable Information Systems (Infoscale), 2007
International Wireless Communications and Mobile Computing Conference (IWCMC), 2007-2009
International Workshop on Wireless Sensor Network Architecture (WSNA), 2007
International Workshop on Security, Privacy, and Trust for Pervasive Applications (SPTPA), 2006 - 2009
International Conference on Wireless Algorithms, Systems, and Applications (WASA), 2006, 2009
International Conference on Information Technology (CIT), 2006
ACM Workshop on Security of Ad Hoc and Sensor Networks (SASN), 2006
International Workshop on Wireless and Sensor Networks Security (WSNS), 2006, 2007
Member of Organization Committee for Conferences/Workshops
Co-chair, IEEE International Workshop on Wireless and Sensor Network Security (WSNS), 2008,2009
Publicity Co-chair, International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (Mobiquitous), 2007.
US NSF Panelist: 2008.
Korean NSF Reviewer: 2009.
Guest Editor: Ad Hoc Network Journal (Elsvier), 2009.