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EP 4 393 138 A1

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(43) Date of publication: 03.07.2024 Bulletin 2024/27 (21) Application number: 22860689.3 (22) Date of filing: 24.08.2022

(51) International Patent Classification (IPC):  H04L 65/75(2022.01) G06V 20/52(2022.01) H04L 45/00(2022.01) H04N 21/234(2011.01) H04W 24/02(2009.01) H04W 4/38(2018.01) (52) Cooperative Patent Classification (CPC): H04L 65/80; H04L 65/612; H04L 67/52 (86) International application number: PCT/FI2022/050543 (87) International publication number: WO 2023/025987 (02.03.2023 Gazette 2023/09)

(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: 25.08.2021 FI 20215896 (71) Applicant: Lempea Oy 00100 Helsinki (FI)	(72) Inventor: LAGERSPETZ, Eemil 00100 Helsinki (FI) (74) Representative: Primrose Oy  Unioninkatu 24 00130 Helsinki 00130 Helsinki (FI)