(19)

(11)

EP 3 622 733 A1

(12)

(43) Date of publication: 18.03.2020 Bulletin 2020/12 (21) Application number: 18797817.6 (22) Date of filing: 07.05.2018

(51) International Patent Classification (IPC):  H04W 4/50(2018.01) H04W 36/38(2009.01) H04L 29/08(2006.01) H04M 15/00(2006.01) H04W 28/10(2009.01) H04W 48/18(2009.01) H04L 12/14(2006.01) H04L 29/06(2006.01) (86) International application number: PCT/FI2018/050333 (87) International publication number: WO 2018/206844 (15.11.2018 Gazette 2018/46)

(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: KH MA MD TN (30) Priority: 08.05.2017 US 201762502906 P (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventor: RÄSÄNEN, John 02660 Espoo (FI) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karakaari 7 02610 Espoo 02610 Espoo (FI)