(19)

(11)

EP 4 420 319 A1

(12)

(43) Date of publication: 28.08.2024 Bulletin 2024/35 (21) Application number: 21835684.8 (22) Date of filing: 09.12.2021

(51) International Patent Classification (IPC):  H04L 27/34(2006.01) (52) Cooperative Patent Classification (CPC): H04L 27/3411 (86) International application number: PCT/EP2021/085015 (87) International publication number: WO 2023/104310 (15.06.2023 Gazette 2023/24)

(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: BOCHERER, Georg 80992 Munich (DE) (74) Representative: Goddar, Heinz J.  Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22 80336 München 80336 München (DE)