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EP 4 569 796 A1

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(43) Date of publication: 18.06.2025 Bulletin 2025/25 (21) Application number: 22758127.9 (22) Date of filing: 09.08.2022

(51) International Patent Classification (IPC):  H04L 61/4511(2022.01) H04L 67/1021(2022.01) H04L 67/101(2022.01) (52) Cooperative Patent Classification (CPC): H04L 61/4511; H04L 67/101; H04L 67/1021; H04L 45/121; H04L 45/08; H04L 45/74; H04L 67/566; H04L 67/10 (86) International application number: PCT/CN2022/111156 (87) International publication number: WO 2024/031334 (15.02.2024 Gazette 2024/07)

(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 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)

(72) Inventors: ZHOU, Jinyang Redmond, Washington 98052 (US) MASKARA, Rajesh Redmond, Washington 98052 (US) YANG, Zhenguo Redmond, Washington 98052 (US) YU, Fangwen Redmond, Washington 98052 (US) LUTTINEN, Todd Carlyle Redmond, Washington 98052 (US) RUTKOWSKI, Bradley Redmond, Washington 98052 (US) (74) Representative: CMS Cameron McKenna Nabarro Olswang LLP  Cannon Place 78 Cannon Street London EC4N 6AF London EC4N 6AF (GB)