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EP 4 090 995 A1

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(43) Date of publication: 23.11.2022 Bulletin 2022/47 (21) Application number: 20710125.4 (22) Date of filing: 06.03.2020

(51) International Patent Classification (IPC):  G01S 17/89(2020.01) G01S 7/4863(2020.01) G02B 26/10(2006.01) G01S 7/481(2006.01) G01S 17/42(2006.01) G01S 7/48(2006.01) (52) Cooperative Patent Classification (CPC): G01S 17/89; G01S 7/4814; G01S 7/4817; G01S 7/4863; G01S 17/42; G02B 26/12 (86) International application number: PCT/EP2020/056039 (87) International publication number: WO 2021/175440 (10.09.2021 Gazette 2021/36)

(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: MUUKKI, Mikko 16440 Kista (SE) BILCU, Radu Ciprian 16440 Kista (SE) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)