(19)

(11)

EP 3 906 734 A1

(12)

(43) Date of publication: 10.11.2021 Bulletin 2021/45 (21) Application number: 19907738.9 (22) Date of filing: 31.12.2019

(51) International Patent Classification (IPC):  H04W 56/00(2009.01) (52) Cooperative Patent Classification (CPC): H04L 5/001; H04L 5/0078; H04W 56/00; H04L 27/26025; H04W 56/0045; H04J 11/0056; H04L 5/0048; H04L 5/0026; H04L 25/03821; H04L 27/2607; H04L 27/261; H04L 5/1469; H04L 5/0091; H04L 5/0073 (86) International application number: PCT/CN2019/130365 (87) International publication number: WO 2020/140888 (09.07.2020 Gazette 2020/28)

(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: 03.01.2019 WO PCT/CN2019/070192 (71) Applicant: QUALCOMM INCORPORATED San Diego, California 92121-1714 (US)	(72) Inventors: XU, Huilin San Diego, California 92121-1714 (US) JI, Tingfang San Diego, California 92121-1714 (US) CAO, Yiqing San Diego, California 92121-1714 (US) REN, Yuwei San Diego, California 92121-1714 (US) MANOLAKOS, Alexandros San Diego, California 92121-1714 (US) (74) Representative: Dunlop, Hugh Christopher et al Maucher Jenkins 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)