(19)

(11)

EP 2 484 056 A1

(12)

(43) Date of publication: 08.08.2012 Bulletin 2012/32 (21) Application number: 10759636.3 (22) Date of filing: 28.09.2010

(51) International Patent Classification (IPC):  H04L 12/28(2006.01) H04L 29/08(2006.01) (86) International application number: PCT/EP2010/064351 (87) International publication number: WO 2011/039179 (07.04.2011 Gazette 2011/14)

(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: 29.09.2009 ES 200930760 (71) Applicant: Telefónica, S.A. 28013 Madrid (ES)	(72) Inventor: PALACIOS VALVERDE, José, Manuel E-28013 Madrid (ES) (74) Representative: Carpintero Lopez, Francisco et al Herrero & Asociados, S.L. Alcalá, 35 28014 Madrid 28014 Madrid (ES)