(19)

(11)

EP 2 308 235 A1

(12)

(43) Date of publication: 13.04.2011 Bulletin 2011/15 (21) Application number: 09800123.3 (22) Date of filing: 01.06.2009

(51) International Patent Classification (IPC):  H04N 7/66(2006.01) H04L 1/22(2006.01) H04N 7/16(2011.01) H04L 12/56(2006.01) (86) International application number: PCT/IB2009/005794 (87) International publication number: WO 2010/010432 (28.01.2010 Gazette 2010/04)

(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 TR Designated Extension States: AL BA RS (30) Priority: 25.07.2008 US 83710 P 23.12.2008 US 342174 (71) Applicant: Nortel Networks Limited St. Laurent, QC H4S 2A9 (CA)	(72) Inventors: RAHRER, Timothy, J. Ottawa Ontario K1S 0T8 (CA) GUNDUZHAN, Emre Bethesda MD 20814 (US) SOUKUP, Martin, Jan Ottawa Ontario K1V 1Y3 (CA) (74) Representative: Boyce, Conor  FRKelly 27 Clyde Road Ballsbridge Dublin 4 Dublin 4 (IE)