(19)

(11)

EP 4 771 767 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24754730.0 (22) Date of filing: 13.08.2024

(51) International Patent Classification (IPC):  H04B 3/54(2006.01) (52) Cooperative Patent Classification (CPC): H04B 3/542; H04B 3/548 (86) International application number: PCT/EP2024/072812 (87) International publication number: WO 2025/045583 (06.03.2025 Gazette 2025/10)

(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: GE KH MA MD TN (30) Priority: 31.08.2023 WO PCT/CN2023/116318 21.09.2023 EP 23198722 (71) Applicant: Signify Holding B.V. 5656 AE Eindhoven (NL)	(72) Inventors: YU, Cheng 5656 AE Eindhoven (NL) YAO, Lijuan 5656 AE Eindhoven (NL) THIJSSEN, Johannes, Maria 5656 AE Eindhoven (NL) VAN KOOTEN, Patrick 5656 AE Eindhoven (NL) (74) Representative: Signify IP  High Tech Campus 7 5656 AE Eindhoven 5656 AE Eindhoven (NL)