(19)

(11)

EP 1 730 882 A2

(12)

(88) Date of publication A3: 06.04.2006 (43) Date of publication: 13.12.2006 Bulletin 2006/50 (21) Application number: 04821441.5 (22) Date of filing: 17.03.2004

(51) International Patent Classification (IPC):  H04L 12/00(2006.01) (86) International application number: PCT/EP2004/002754 (87) International publication number: WO 2005/091556 (29.09.2005 Gazette 2005/39)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) 164 83 Stockholm (SE)	(72) Inventors: JÖNSSON, Ulf, Fredrik S- 169 68 Solna (SE) WEI, Zhao S-104 05 Stockholm (SE) AYADURAI, Vicknesan S-192 78 Sollentuna (SE) (74) Representative: Sjöberg, Mats Hakan  Ericsson AB Patent Unit IP Networks Box 1505 125 25 Älvsjö 125 25 Älvsjö (SE)