(19)

(11)

EP 2 050 287 A2

(12)

(88) Date of publication A3: 04.12.2008 (43) Date of publication: 22.04.2009 Bulletin 2009/17 (21) Application number: 07840661.8 (22) Date of filing: 02.08.2007

(51) International Patent Classification (IPC):  H04Q 7/20(0000.00) (86) International application number: PCT/US2007/075087 (87) International publication number: WO 2008/017034 (07.02.2008 Gazette 2008/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 03.08.2006 US 821378 P 11.08.2006 US 822127 P 23.08.2006 US 823367 P 01.08.2007 US 832547 01.08.2007 US 832551 01.08.2007 US 832558 (71) Applicant: NTT DoCoMo Inc. Chiyoda-Ku Tokyo 100-6150 (JP)	(72) Inventors: GUVENC, Ismail Santa Clara, CA 95051 (US) CHONG, Chia-Chin Santa Clara, CA 95054 (US) (74) Representative: Skone James, Robert Edmund  Gill Jennings & Every LLP Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)