(19)

(11)

EP 4 183 053 A1

(12)

(43) Date of publication: 24.05.2023 Bulletin 2023/21 (21) Application number: 21745439.6 (22) Date of filing: 19.07.2021

(51) International Patent Classification (IPC):  H04B 3/54(2006.01) (52) Cooperative Patent Classification (CPC): H04B 3/54; H04B 2203/5458 (86) International application number: PCT/IB2021/056505 (87) International publication number: WO 2022/018614 (27.01.2022 Gazette 2022/04)

(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: 20.07.2020 CH 8932020 (71) Applicant: eSMART Technologies SA 1020 Renens (CH)	(72) Inventor: LO CONTE, Fabrizio 1020 Renens (CH) (74) Representative: P&TS SA (AG, Ltd.)  Avenue J.-J. Rousseau 4 P.O. Box 2848 2001 Neuchâtel 2001 Neuchâtel (CH)