(19)

(11)

EP 1 771 989 A1

(12)

(43) Date of publication: 11.04.2007 Bulletin 2007/15 (21) Application number: 05739663.2 (22) Date of filing: 11.05.2005

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) G06F 17/30(2006.01) (86) International application number: PCT/FI2005/050151 (87) International publication number: WO 2005/109820 (17.11.2005 Gazette 2005/46)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 12.05.2004 FI 20045174 (71) Applicant: Nokia Corporation 02150 Espoo (FI)	(72) Inventor: SIMELIUS, Kim FI-33720 Tampere (FI) (74) Representative: Smolander, Jouni Juhani  Kolster Oy Ab Iso Roobertinkatu 23 PO Box 148 FIN-00121 Helsinki FIN-00121 Helsinki (FI)