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EP 4 437 673 A1

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(43) Date of publication: 02.10.2024 Bulletin 2024/40 (21) Application number: 21967692.1 (22) Date of filing: 16.12.2021

(51) International Patent Classification (IPC):  H04L 1/08(2006.01) H04L 1/1867(2023.01) H04W 72/12(2023.01) H04L 1/1825(2023.01) H04L 1/1829(2023.01) (52) Cooperative Patent Classification (CPC): H04L 1/08; H04W 72/23; H04L 1/1864; H04L 1/1825; H04L 1/1896 (86) International application number: PCT/CN2021/138877 (87) International publication number: WO 2023/108557 (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) Inventors: HAJRI, Salah Eddine 80992 Munich (DE) FENG, Shulan Shenzhen, Guangdong 518129 (CN) (74) Representative: Maiwald GmbH  Engineering Elisenhof Elisenstrasse 3 80335 München 80335 München (DE) (56) References cited: :