(19)

(11)

EP 2 810 369 A1

(12)

(43) Date of publication: 10.12.2014 Bulletin 2014/50 (21) Application number: 12708754.2 (22) Date of filing: 30.01.2012

(51) International Patent Classification (IPC):  H03D 7/12(2006.01) (86) International application number: PCT/EP2012/051405 (87) International publication number: WO 2013/113352 (08.08.2013 Gazette 2013/32)

(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 RS SE SI SK SM TR Designated Extension States: BA ME (71) Applicant: Telefonaktiebolaget LM Ericsson (Publ) 164 83 Stockholm (SE)	(72) Inventor: BAO, Mingquan S-426 54 Västra Frölunda (SE) (74) Representative: Vejgaard, Christian  Ericsson AB Patent Unit GL Lindholmspiren 11 417 56 Göteborg 417 56 Göteborg (SE)