(19)

(11)

EP 2 188 964 A1

(12)

(43) Date of publication: 26.05.2010 Bulletin 2010/21 (21) Application number: 08803942.5 (22) Date of filing: 10.09.2008

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) (86) International application number: PCT/EP2008/061975 (87) International publication number: WO 2009/034098 (19.03.2009 Gazette 2009/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 12.09.2007 US 971704 P (71) Applicant: Telefonaktiebolaget L M Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventor: KAMPMANN, Dirk NL-6291 Gp Vaals (NL) (74) Representative: Tonscheidt, Andreas et al Ericsson GmbH Ericsson Allee 1 D-52134 Herzogenrath D-52134 Herzogenrath (DE)