(19)

(11)

EP 2 425 336 A1

(12)

(43) Date of publication: 07.03.2012 Bulletin 2012/10 (21) Application number: 10730207.7 (22) Date of filing: 15.04.2010

(51) International Patent Classification (IPC):  G06F 9/445(2006.01) H04W 12/06(2009.01) H04M 1/725(2006.01) (86) International application number: PCT/IB2010/001281 (87) International publication number: WO 2010/125473 (04.11.2010 Gazette 2010/44)

(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 MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 30.04.2009 WO PCT/CN2009/071580 (71) Applicant: France Telecom 75015 Paris (FR)	(72) Inventors: LI, Yinghua Beijing 100025 (CN) WANG, Hao Beijing 100054 (CN) ZHAO, Jianguang Beijing 100101 (CN) (74) Representative: Coda, Sandrine et al France Telecom R & D / PIV / Brevets 38-40, rue du Général Leclerc 92794 Issy les Moulineaux Cedex 9 92794 Issy les Moulineaux Cedex 9 (FR)