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(11)

EP 3 895 354 A1

(12)

(43) Date of publication: 20.10.2021 Bulletin 2021/42 (21) Application number: 18827080.5 (22) Date of filing: 20.12.2018

(51) International Patent Classification (IPC):  H04L 1/18(2006.01) H04W 88/04(2009.01) H04W 72/04(2009.01) H04L 5/00(2006.01) (52) Cooperative Patent Classification (CPC): H04L 1/1861; H04L 5/0055; H04L 2001/0093 (86) International application number: PCT/EP2018/086151 (87) International publication number: WO 2020/125990 (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 (71) Applicant: Huawei Technologies Co., Ltd. Longgang District, Shenzhen, Guangdong 518129, (CN)	(72) Inventors: STIRLING-GALLACHER, Richard 80992 Munich (DE) LUO, Jian 80992 Munich (DE) ZHOU, Chan 80992 Munich (DE) AYAZ, Serkan 80992 Munich (DE) LI, Zhongfeng 80992 Munich (DE) (74) Representative: Roth, Sebastian  Mitscherlich PartmbB Patent- und Rechtsanwälte Sonnenstraße 33 80331 München 80331 München (DE)