Testbeds and Research Infrastructure. Development of Networks and Communities 7th International ICST Conference,TridentCom 2011, Shanghai, China, April 17-19, 2011, Revised Selected Papers - Korakis, Thanasis; Li, Hongbin; Tran-Gia, Phuoc; Park, Hong-Shik (Springer Berlin Heidelberg : Imprint: Springer, 2012)