1. http://autoidlabs.org/page.htm.
2. ITU Strategy and Policy Unit (SPU). ITU Internet Reports 2005: The Internet of Things[R]. Geneva: International Telecommunication Union (ITU), 2005.
3. Liu Yunjie. Internet industry development present situation and future prospects [C]. RFID and Internet of Summit Forum (Hong Kong), 2010.3.18.
4. ITU NGN-GSI Rapporteur Group. Requirements for support of USN applications and services in NGN environment[R]. Geneva: International Telecommunication Union (ITU), 2007.
5. Wang Zhongmin, Zhang Chenghai, Ma Lincong. EPC and Internet of things, China standard press, 2004.