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EP 4 771 775 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 23797641.0 (22) Date of filing: 28.09.2023

(51) International Patent Classification (IPC):  H04B 7/0456(2017.01) H04L 5/00(2006.01) H04B 7/06(2006.01) (52) Cooperative Patent Classification (CPC): H04B 7/0628; H04B 7/0691; H04B 7/0473; H04B 7/0469; H04L 5/0023; H04L 5/0044; H04L 5/0055; H04L 5/0051; H04L 5/0016 (86) International application number: PCT/CN2023/122684 (87) International publication number: WO 2025/065544 (03.04.2025 Gazette 2025/14)

(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: Google LLC Mountain View, CA 94043 (US)	(72) Inventors: LIOU, Jia-Hong Taipei City Taiwan 10548 (CN) ZHANG, Yushu Beijing 100190 (CN) (74) Representative: Marks & Clerk GST  1 New York Street Manchester M1 4HD Manchester M1 4HD (GB)