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EP 4 424 047 A1

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(43) Date of publication: 04.09.2024 Bulletin 2024/36 (21) Application number: 22813378.1 (22) Date of filing: 25.10.2022

(51) International Patent Classification (IPC):  H04W 12/08(2021.01) H04L 67/56(2022.01) H04L 12/46(2006.01) H04L 9/40(2022.01) H04L 61/103(2022.01) H04L 61/59(2022.01) (52) Cooperative Patent Classification (CPC): H04L 12/4633; H04L 61/103; H04L 61/59; H04L 63/0272 (86) International application number: PCT/US2022/047765 (87) International publication number: WO 2023/076301 (04.05.2023 Gazette 2023/18)

(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 (30) Priority: 25.10.2021 US 202163271437 P 28.10.2021 US 202163272985 P 29.10.2021 US 202163273306 P 13.04.2022 US 202217719921 (71) Applicant: Cisco Technology, Inc. San Jose, CA 95134 (US)

(72) Inventors: PARLA, Vincent, E. North Hampton, NH 03862-0831 (US) MESTERY, Kyle, Andrew Donald Woodbury, MN 55129 (US) (74) Representative: Warren, Caroline Elisabeth et al Mathys & Squire The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)