Andreas Willig is a senior researcher with the Telecommunication networks group (TKN) at the Technical University of Berlin, Germany since April 2005. From 2002 to 2005 he was an assistant professor with the Hasso-Plattner-Institue at University of Potsdam (Germany). He obtained the Dr.-Ing. degree in electrical engineering in 2002, and the diploma degree in computer science in 1994.