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(11)

EP 4 285 562 A1

(12)

(43) Date of publication: 06.12.2023 Bulletin 2023/49 (21) Application number: 22705198.4 (22) Date of filing: 14.01.2022

(51) International Patent Classification (IPC):  H04L 43/0811(2022.01) H04L 41/0866(2022.01) H04L 43/50(2022.01) (52) Cooperative Patent Classification (CPC): H04L 43/0811; H04L 43/50; H04L 41/0866 (86) International application number: PCT/US2022/012400 (87) International publication number: WO 2022/164653 (04.08.2022 Gazette 2022/31)

(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: 01.02.2021 US 202163144335 P 13.04.2021 US 202117229835 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)

(72) Inventors: DAVIES, Philip Joel Redmond, Washington 98052-6399 (US) PHILLIPS, Jonathan Redmond, Washington 98052-6399 (US) MADDEN, Stephen Christopher Redmond, Washington 98052-6399 (US) EDMONDS, Andrew Chrissie Redmond, Washington 98052-6399 (US) ORBELL, Steven Edward Redmond, Washington 98052-6399 (US) MCCURDY, Andrew Redmond, Washington 98052-6399 (US) GALLAGHER, Catherine Redmond, Washington 98052-6399 (US) DACKINS, Jason 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)