ftw. Technical Report FTW-TR-2006-006 Printed February 2006 On the Impact of Unwanted Traffic onto a 3G Network Fabio Ricciato, Philipp Svoboda, Eduard Hasenleithner, Wolfgang Fleischer ftw. Forschungszentrum Telekommunikation Wien Donaucitystraße 1, 1220 Vienna, AUSTRIA funded by the Austrian Kplus Program