(19)

(11)

EP 2 638 720 A1

(12)

(43) Date of publication: 18.09.2013 Bulletin 2013/38 (21) Application number: 11701213.8 (22) Date of filing: 07.01.2011

(51) International Patent Classification (IPC):  H04W 16/14(2009.01) (86) International application number: PCT/EP2011/050155 (87) International publication number: WO 2012/062483 (18.05.2012 Gazette 2012/20)

(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: 11.11.2010 WO PCT/EP2010/067264 (71) Applicant: Nokia Siemens Networks Oy 02610 Espoo (FI)	(72) Inventors: HULKKONEN, Jari Yrjana FI-90630 Oulu (FI) TIIROLA, Esa Tapani FI-90450 Kempele (FI) SAILY, Mikko FI-04130 Sipoo (FI) VESTERINEN, Seppo Ilmari FI-90460 Oulunsalo (FI)