(19)

(11)

EP 4 573 715 A1

(12)

(43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 22962534.8 (22) Date of filing: 07.11.2022

(51) International Patent Classification (IPC):  H04L 27/00(2006.01) (52) Cooperative Patent Classification (CPC): H04L 5/0055; H04L 1/1861 (86) International application number: PCT/CN2022/130429 (87) International publication number: WO 2024/082355 (25.04.2024 Gazette 2024/17)

(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 (71) Applicant: Lenovo (Beijing) Limited Beijing 100085 (CN)	(72) Inventor: LEI, Haipeng Beijing 100094 (CN) (74) Representative: Openshaw & Co.  8 Castle Street Farnham, Surrey GU9 7HR Farnham, Surrey GU9 7HR (GB)