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(11)

EP 3 925 252 A1

(12)

(43) Date of publication: 22.12.2021 Bulletin 2021/51 (21) Application number: 20705928.8 (22) Date of filing: 13.02.2020

(51) International Patent Classification (IPC):  H04W 12/00(2021.01) H04W 36/00(2009.01) H04W 12/06(2021.01) H04W 76/19(2018.01) (52) Cooperative Patent Classification (CPC): H04W 12/06; H04W 76/19; H04W 12/75 (86) International application number: PCT/EP2020/053815 (87) International publication number: WO 2020/165372 (20.08.2020 Gazette 2020/34)

(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: 15.02.2019 WO PCT/CN2019/075236 (71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) 164 83 Stockholm (SE)	(72) Inventors: SHI, Nianshan 176 74 Järfälla (SE) LI, Xiaoming SHANGHAI 200335 (CN) RATHONYI, Bela 234 37 Lomma (SE) (74) Representative: Ericsson  Patent Development Torshamnsgatan 21-23 164 80 Stockholm 164 80 Stockholm (SE)