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EP 4 316 187 A1

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(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 21933746.6 (22) Date of filing: 31.03.2021

(51) International Patent Classification (IPC):  H04W 76/30(2018.01) (52) Cooperative Patent Classification (CPC): H04W 76/18; H04W 76/23; H04W 76/34; H04L 5/0048; H04L 1/0026; H04L 2001/0097 (86) International application number: PCT/CN2021/084418 (87) International publication number: WO 2022/205070 (06.10.2022 Gazette 2022/40)

(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: Apple Inc. Cupertino, CA 95014 (US)	(72) Inventors: ZHANG, Dawei Cupertino, California 95014 (US) XU, Fangli Cupertino, California 95014 (US) HU, Haijing Cupertino, California 95014 (US) WU, Zhibin Cupertino, California 95014 (US) CHEN, Yuqin Cupertino, California 95014 (US) (74) Representative: Zacco Denmark A/S  Arne Jacobsens Allé 15 2300 Copenhagen S 2300 Copenhagen S (DK)