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EP 3 900 473 A1

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(43) Date of publication: 27.10.2021 Bulletin 2021/43 (21) Application number: 19902040.5 (22) Date of filing: 30.12.2019

(51) International Patent Classification (IPC):  H04W 74/08(2009.01) H04W 72/12(2009.01) H04L 1/00(2006.01) H04W 74/00(2009.01) H04W 72/14(2009.01) H04L 5/00(2006.01) (52) Cooperative Patent Classification (CPC): H04L 5/0091; H04L 5/0048; H04L 1/1861; H04W 74/002 (86) International application number: PCT/KR2019/018709 (87) International publication number: WO 2020/139053 (02.07.2020 Gazette 2020/27)

(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: 29.12.2018 CN 201811654158 25.02.2019 CN 201910141008 (71) Applicant: Samsung Electronics Co., Ltd. Suwon-si, Gyeonggi-do 16677 (KR)	(72) Inventors: XIONG, Qi Beijing 100028 (CN) YU, Bin Beijing 100028 (CN) SUN, Feifei Beijing 100028 (CN) WANG, Yi Beijing 100028 (CN) (74) Representative: Gulde & Partner  Patent- und Rechtsanwaltskanzlei mbB Wallstraße 58/59 10179 Berlin 10179 Berlin (DE)