Dr. Cheng has been actively involved in professional activities. He was the System Administrator of IEEE Transactions on Vehicular Technology from April 2008 to December 2009. He has served on the Technical Program Committee (TPC) as member in a number of international conferences including IEEE International Conference on Communications (ICC) 2011, IEEE International Congress on Ultra Modern Telecommunications and Control Systems (ICUMT) 2010, IEEE International Workshop on Internet and Distributed Computing Systems (IDCS) 2010, IEEE Vehicular Technology Conference (VTC)-Fall 2010, International Wireless Communications & Mobile Computing Conference (IWCMC) 2010, Workshop on Cognitive Wireless Communications and Networking (CWCN) 2009, and IEEE Global Communications Conference (GLOBECOM) 2008. He has also served as a Technical Session Chair in various IEEE Conferences such as IEEE WCNC 2010, IEEE GLOBECOM 2009, and IEEE GLOBECOM 2008. Since May 2010, he has been serving on the Editorial Board of Journal of Computing and Applications (JCA) as Regional Editor.