(19)

(11)

EP 4 364 374 A1

(12)

(43) Date of publication: 08.05.2024 Bulletin 2024/19 (21) Application number: 21739045.9 (22) Date of filing: 30.06.2021

(51) International Patent Classification (IPC):  H04L 41/5009(2022.01) H04L 41/0866(2022.01) (52) Cooperative Patent Classification (CPC): H04L 41/5009; H04L 41/0866 (86) International application number: PCT/EP2021/067942 (87) International publication number: WO 2023/274515 (05.01.2023 Gazette 2023/01)

(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 (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventor: BAJZIK, Lajos 1027 Budapest (HU) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karakaari 7 02610 Espoo 02610 Espoo (FI)