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EP 3 987 719 A1

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(43) Date of publication: 27.04.2022 Bulletin 2022/17 (21) Application number: 19734323.9 (22) Date of filing: 20.06.2019

(51) International Patent Classification (IPC):  H04L 12/24(2006.01) H04W 4/70(2018.01) H04L 12/26(2006.01) H04L 29/06(2006.01) (52) Cooperative Patent Classification (CPC): H04L 41/142; H04L 41/16; H04L 43/04 (86) International application number: PCT/EP2019/066395 (87) International publication number: WO 2020/253963 (24.12.2020 Gazette 2020/52)

(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: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventors: XIAO, Bin 41701 Göteborg (SE) TUDOR, Valentin 18371 Täby (SE) HERNANDEZ HERRANZ, Aitor 112 14 Stockholm (SE) (74) Representative: Ericsson  Patent Development Torshamnsgatan 21-23 164 80 Stockholm 164 80 Stockholm (SE)