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EP 4 817 327 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 23959846.9 (22) Date of filing: 30.11.2023

(51) International Patent Classification (IPC):  H04W 52/02(2009.01) (52) Cooperative Patent Classification (CPC): H04W 52/0216; H04W 52/0235; H04W 52/0245; H04B 7/0695; H04L 5/005; H04L 5/0091; H04W 56/0015 (86) International application number: PCT/CN2023/135425 (87) International publication number: WO 2025/111929 (05.06.2025 Gazette 2025/23)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (71) Applicant: Apple Inc. Cupertino, CA 95014 (US)

(72) Inventors: HE, Hong Cupertino, California 95014 (US) ZHANG, Dawei Cupertino, California 95014 (US) ZENG, Wei Cupertino, California 95014 (US) WU, Dan Cupertino, California 95014 (US) YE, Chunxuan Cupertino, California 95014 (US) YE, Sigen Cupertino, California 95014 (US) CUI, Jie Cupertino, California 95014 (US) (74) Representative: Zacco Denmark A/S  Arne Jacobsens Allé 15 2300 Copenhagen S 2300 Copenhagen S (DK)