(19)

(11)

EP 2 225 856 A1

(12)

(43) Date of publication: 08.09.2010 Bulletin 2010/36 (21) Application number: 07870551.4 (22) Date of filing: 14.12.2007

(51) International Patent Classification (IPC):  H04L 12/56(2006.01) (86) International application number: PCT/IN2007/000592 (87) International publication number: WO 2009/078028 (25.06.2009 Gazette 2009/26)

(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 (71) Applicant: Alcatel Lucent 75007 Paris (FR)	(72) Inventors: KUHIKAR, Sanjay Bangalore 560035 Karnataka (IN) SIRUGUDI, Narendra, Kumar Bangalore 560047 Karnataka (IN) CHATTOPADHYAY, Subendu Bankura 722101 West Bengal (IN) (74) Representative: Sciaux, Edmond  Alcatel Lucent 32 Avenue Kléber 92700 Colombes 92700 Colombes (FR)