(19)

(11)

EP 3 942 731 A1

(12)

(43) Date of publication: 26.01.2022 Bulletin 2022/04 (21) Application number: 19716360.3 (22) Date of filing: 04.04.2019

(51) International Patent Classification (IPC):  H04L 9/08(2006.01) H04B 10/00(2013.01) (52) Cooperative Patent Classification (CPC): H04B 10/70; H04L 9/0852 (86) International application number: PCT/EP2019/058474 (87) International publication number: WO 2020/200451 (08.10.2020 Gazette 2020/41)

(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 Duesseldorf GmbH 40549 Düsseldorf (DE)	(72) Inventors: HILLERKUSS, David 80992 Munich (DE) COMANDAR, Lucian 80992 Munich (DE) (74) Representative: Grünecker Patent- und Rechtsanwälte PartG mbB  Leopoldstraße 4 80802 München 80802 München (DE)