The aim of CHINACOM is to bring together Chinese and international players in networking and communications under one roof, building a showcase in communications and networking research in China. Following the big successes of CHINACOM'06-'08, CHINACOM'09 will be held in Xi'an, China, one of the most ancient cities in China, on Aug. 26-28 2009. The conference will be technically sponsored by Stat Key Lab. of ISN(Xidian University) and Xi'an Jiaotong University.CHINACOM is being positioned as a premier international annual conference for the presentation of original and fundamental research advances in the field of communications,networking and Internet applications. The conference will consist of technical symposia, panels, and workshops. The technical sessions will present original and fundamental research advances while the panels and workshops will focus on development, application, and related business issues.