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(11)

EP 4 402 853 A1

(12)

(43) Date of publication: 24.07.2024 Bulletin 2024/30 (21) Application number: 22768538.5 (22) Date of filing: 18.08.2022

(51) International Patent Classification (IPC):  H04L 9/08(2006.01) G06F 8/656(2018.01) G06F 21/60(2013.01) (52) Cooperative Patent Classification (CPC): H04L 9/0891; G06F 21/602; G06F 8/656; H04L 9/088 (86) International application number: PCT/US2022/040673 (87) International publication number: WO 2023/043564 (23.03.2023 Gazette 2023/12)

(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: 15.09.2021 US 202163244710 P 17.12.2021 US 202117644846 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: CHEN, Yongyu Redmond, Washington 98052-6399 (US) DENG, Wei Redmond, Washington 98052-6399 (US) WU, Yizhong Redmond, Washington 98052-6399 (US) GUO, Minming Redmond, Washington 98052-6399 (US) (74) Representative: Goddar, Heinz J.  Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22 80336 München 80336 München (DE)