(19)

(11)

EP 2 414 979 A2

(12)

(88) Date of publication A3: 02.12.2010 (43) Date of publication: 08.02.2012 Bulletin 2012/06 (21) Application number: 10725498.9 (22) Date of filing: 15.03.2010

(51) International Patent Classification (IPC):  G06F 21/00(2006.01) (86) International application number: PCT/IB2010/001119 (87) International publication number: WO 2010/113040 (07.10.2010 Gazette 2010/40)

(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: 31.03.2009 WO PCT/CN2009/071086 (71) Applicant: France Telecom 75015 Paris (FR)	(72) Inventors: LIAN, Shiguo Beijing 100080 (CN) DONG, Yuan Beijing 100080 (CN) (74) Representative: Coda, Sandrine  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)