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EP 4 771 993 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 23764898.5 (22) Date of filing: 01.09.2023

(51) International Patent Classification (IPC):  H05K 1/02(2006.01) G02B 6/35(2006.01) H05K 1/18(2026.01) G02B 6/43(2006.01) G02B 6/42(2006.01) (52) Cooperative Patent Classification (CPC): H05K 1/0274; H05K 2201/10121; H05K 2201/09072; H05K 1/183; G02B 6/43; G02B 6/428; G02B 6/3546; G02B 6/4204 (86) International application number: PCT/EP2023/074090 (87) International publication number: WO 2025/045382 (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: KH MA MD TN (71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) 164 83 Stockholm (SE)	(72) Inventors: BIGONGIARI, Alessandra 56100 Pisa (IT) DEBENEDETTI, Paolo 16152 Genova (IT) CAVALIERE, Fabio 56100 Pisa (IT) MOSTI, Sergio 16152 Genova (IT) (74) Representative: Ericsson  Patent Development Torshamnsgatan 21-23 164 80 Stockholm 164 80 Stockholm (SE)