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(11)

EP 3 516 775 A1

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(43) Date of publication: 31.07.2019 Bulletin 2019/31 (21) Application number: 16916483.7 (22) Date of filing: 22.09.2016

(51) International Patent Classification (IPC):  H03M 13/31(2006.01) H03M 13/11(2006.01) (86) International application number: PCT/CN2016/099689 (87) International publication number: WO 2018/053744 (29.03.2018 Gazette 2018/13)

(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 Designated Validation States: MA MD (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventors: JAYASINGHE, Keeth Saliya Piliyandala (LK) ZHANG, Yi Beijing 102218 (CN) SUN, Jingyuan Beijing 100101 (CN) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karaportti 3 02610 Espoo 02610 Espoo (FI)