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EP 4 045 958 A1

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(43) Date of publication: 24.08.2022 Bulletin 2022/34 (21) Application number: 19831617.6 (22) Date of filing: 12.12.2019

(51) International Patent Classification (IPC):  G02B 7/02(2021.01) G02B 15/20(2006.01) G02B 13/00(2006.01) G02B 7/10(2021.01) H02K 41/02(2006.01) (52) Cooperative Patent Classification (CPC): G02B 7/102; G02B 7/021; G02B 15/20; G02B 13/009; H02K 41/0356; H02K 16/00 (86) International application number: PCT/EP2019/084948 (87) International publication number: WO 2021/115606 (17.06.2021 Gazette 2021/24)

(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: EROMAKI, Marko 16440 Kista (SE) (74) Representative: MERH-IP Matias Erny Reichl Hoffmann Patentanwälte PartG mbB  Paul-Heyse-Strasse 29 80336 München 80336 München (DE)