Mobile Lightweight Wireless Systems : First International ICST Conference, MOBILIGHT 2009, Athens, Greece, May 18-20, 2009, Revised Selected Papers - Fabrizio Granelli, Charalabos Skianis, Periklis Chatzimisios, Yang Xiao, Simone Redana ((Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering))