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(11)

EP 4 427 426 A1

(12)

(43) Date of publication: 11.09.2024 Bulletin 2024/37 (21) Application number: 21839085.4 (22) Date of filing: 13.12.2021

(51) International Patent Classification (IPC):  H04L 45/00(2022.01) H04L 41/40(2022.01) H04L 45/64(2022.01) H04L 67/50(2022.01) (52) Cooperative Patent Classification (CPC): H04L 45/64; H04L 45/38; H04L 41/0806; H04L 41/0896; H04L 41/0816; H04L 41/5041; H04L 43/0888; H04L 43/0864 (86) International application number: PCT/EP2021/085485 (87) International publication number: WO 2023/110056 (22.06.2023 Gazette 2023/25)

(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: Huawei Technologies Co., Ltd. Shenzhen, Guangdong 518129 (CN)	(72) Inventor: TROSSEN, Dirk 80992 Munich (DE) (74) Representative: Roth, Sebastian  Mitscherlich PartmbB Patent- und Rechtsanwälte Karlstraße 7 80333 München 80333 München (DE)