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EP 4 237 975 A1

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(43) Date of publication: 06.09.2023 Bulletin 2023/36 (21) Application number: 20835841.6 (22) Date of filing: 22.12.2020

(51) International Patent Classification (IPC):  G06F 21/55(2013.01) H04L 9/40(2022.01) (52) Cooperative Patent Classification (CPC): G06F 21/55; H04L 63/1416 (86) International application number: PCT/EP2020/087720 (87) International publication number: WO 2022/135706 (30.06.2022 Gazette 2022/26)

(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: JEPSEN, Bent 80992 Munich (DE) GJORUP, Karsten 80992 Munich (DE) (74) Representative: Epping - Hermann - Fischer  Patentanwaltsgesellschaft mbH Schloßschmidstraße 5 80639 München 80639 München (DE)