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(11)

EP 4 324 224 A1

(12)

(43) Date of publication: 21.02.2024 Bulletin 2024/08 (21) Application number: 22717414.1 (22) Date of filing: 14.04.2022

(51) International Patent Classification (IPC):  H04S 7/00(2006.01) H04R 5/027(2006.01) (52) Cooperative Patent Classification (CPC): H04S 7/302; H04S 7/304; H04S 2400/01; H04S 2400/11; H04S 2400/15; H04S 2420/11; H04S 2400/03; H04R 5/027 (86) International application number: PCT/EP2022/059973 (87) International publication number: WO 2022/219100 (20.10.2022 Gazette 2022/42)

(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 (30) Priority: 14.04.2021 US 202163174889 P (71) Applicant: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventors: FALK, Tommy 163 47 SPÅNGA (SE) DE BRUIJN, Werner 113 66 STOCKHOLM (SE) (74) Representative: Ericsson  Patent Development Torshamnsgatan 21-23 164 80 Stockholm 164 80 Stockholm (SE)