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(11)

EP 3 888 405 A1

(12)

(43) Date of publication: 06.10.2021 Bulletin 2021/40 (21) Application number: 21733880.5 (22) Date of filing: 18.01.2021

(51) International Patent Classification (IPC):  H04W 72/04(2009.01) H04W 72/12(2009.01) H04W 72/02(2009.01) H04L 1/18(2006.01) (52) Cooperative Patent Classification (CPC): H04L 5/0042; H04L 25/03866; H04W 72/1257; H03M 13/09; H04L 5/0044; H04L 27/26025 (86) International application number: PCT/KR2021/000677 (87) International publication number: WO 2021/149987 (29.07.2021 Gazette 2021/30)

(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: 20.01.2020 KR 20200007549 06.04.2020 KR 20200041581 (71) Applicant: Samsung Electronics Co., Ltd. Gyeonggi-do 16677 (KR)

(72) Inventors: PARK, Sungjin Suwon-si, Gyeonggi-do 16677 (KR) KIM, Taehyoung Suwon-si, Gyeonggi-do 16677 (KR) YEO, Jeongho Suwon-si, Gyeonggi-do 16677 (KR) OH, Jinyoung Suwon-si, Gyeonggi-do 16677 (KR) RYU, Hyunseok Suwon-si, Gyeonggi-do 16677 (KR) BANG, Jonghyun Suwon-si, Gyeonggi-do 16677 (KR) SHIN, Cheolkyu Suwon-si, Gyeonggi-do 16677 (KR) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)