(19)

(11)

EP 2 449 830 A1

(12)

(43) Date of publication: 09.05.2012 Bulletin 2012/19 (21) Application number: 10728391.3 (22) Date of filing: 10.06.2010

(51) International Patent Classification (IPC):  H04W 52/32(2009.01) H04W 52/36(2009.01) H04W 52/24(2009.01) (86) International application number: PCT/JP2010/003859 (87) International publication number: WO 2011/001607 (06.01.2011 Gazette 2011/01)

(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 SE SI SK SM TR (30) Priority: 30.06.2009 EP 09164186 (71) Applicant: NEC Corporation Tokyo 108-8001 (JP)	(72) Inventor: MOUHOUCHE, Belkacem Massy 91300 (FR) (74) Representative: MacDougall, Alan John Shaw et al Mathys & Squire LLP 120 Holborn London EC1N 2SQ London EC1N 2SQ (GB)