(19)

(11)

EP 2 586 234 A1

(12)

(43) Date of publication: 01.05.2013 Bulletin 2013/18 (21) Application number: 11730756.1 (22) Date of filing: 14.06.2011

(51) International Patent Classification (IPC):  H04W 24/08(2009.01) (86) International application number: PCT/IB2011/052582 (87) International publication number: WO 2011/161585 (29.12.2011 Gazette 2011/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 13.10.2010 US 392553 P 24.06.2010 US 358095 P (71) Applicant: Telefonaktiebolaget L M Ericsson (PUBL) 164 83 Stockholm (SE)	(72) Inventor: RÁCZ, András H-1148 Budapest (HU) (74) Representative: Röthinger, Rainer  Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 81541 München 81541 München (DE)