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EP 4 515 844 A1

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(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23713499.4 (22) Date of filing: 28.02.2023

(51) International Patent Classification (IPC):  H04L 47/125(2022.01) H04L 61/09(2022.01) H04L 67/1001(2022.01) H04L 12/46(2006.01) H04L 61/2503(2022.01) H04L 67/1006(2022.01) (52) Cooperative Patent Classification (CPC): H04L 67/1006; H04L 12/4633; H04L 47/125; H04L 67/63; H04L 69/22; H04L 2101/663; H04L 2101/622; H04L 61/2596; H04L 65/1046; H04L 65/75; H04L 65/80; H04L 65/1069 (86) International application number: PCT/US2023/014191 (87) International publication number: WO 2023/211568 (02.11.2023 Gazette 2023/44)

(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: 28.04.2022 GB 202206242 28.06.2022 US 202217852275 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)

(72) Inventors: DAY, Robert Keith Redmond, Washington 98052-6399 (US) TYLEE, Andrew John Redmond, Washington 98052-6399 (US) STEDMAN, Charles Richard Redmond, Washington 98052-6399 (US) REX, Sebastian Kenelm Redmond, Washington 98052-6399 (US) LUND, Christian Dominic Redmond, Washington 98052-6399 (US) MEREDITH, Matthew Gareth Peter Redmond, Washington 98052-6399 (US) (74) Representative: CMS Cameron McKenna Nabarro Olswang LLP  Cannon Place 78 Cannon Street London EC4N 6AF London EC4N 6AF (GB)