(19)

(11)

EP 4 211 860 A1

(12)

(43) Date of publication: 19.07.2023 Bulletin 2023/29 (21) Application number: 21882194.0 (22) Date of filing: 25.10.2021

(51) International Patent Classification (IPC):  H04L 5/00(2006.01) (52) Cooperative Patent Classification (CPC): H04L 5/0055; H04L 5/0094; H04L 5/0078 (86) International application number: PCT/CN2021/126134 (87) International publication number: WO 2022/083782 (28.04.2022 Gazette 2022/17)

(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: 23.10.2020 US 202063104915 P (71) Applicant: FG INNOVATION COMPANY LIMITED Hong Kong (HK)	(72) Inventor: WANG, Haihan Taipei 114 (TW) (74) Representative: Müller Hoffmann & Partner  Patentanwälte mbB St.-Martin-Strasse 58 81541 München 81541 München (DE)