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(11)

EP 3 895 335 A1

(12)

(43) Date of publication: 20.10.2021 Bulletin 2021/42 (21) Application number: 19719327.9 (22) Date of filing: 26.04.2019

(51) International Patent Classification (IPC):  H04B 7/06(2006.01) H04W 52/24(2009.01) H04W 52/42(2009.01) H04B 7/08(2006.01) H04W 52/38(2009.01) (52) Cooperative Patent Classification (CPC): H04B 7/086; H04W 52/42; H04W 52/383; H04B 7/0617; H04W 52/242 (86) International application number: PCT/EP2019/060792 (87) International publication number: WO 2020/126114 (25.06.2020 Gazette 2020/26)

(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 (30) Priority: 21.12.2018 WO PCT/EP2018/086659 (71) Applicant: Huawei Technologies Co., Ltd. Longgang District, Shenzhen, Guangdong 518129, (CN)	(72) Inventors: CASTANEDA, Mario 80809 Munich (DE) LI, Zhongfeng 80992 Munich (DE) STIRLING-GALLACHER, Richard 80992 Munich (DE) (74) Representative: Isarpatent  Patent- und Rechtsanwälte Barth Charles Hassa Peckmann & Partner mbB Friedrichstrasse 31 80801 München 80801 München (DE)