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(11)

EP 4 154 233 A1

(12)

(43) Date of publication: 29.03.2023 Bulletin 2023/13 (21) Application number: 21732742.8 (22) Date of filing: 20.05.2021

(51) International Patent Classification (IPC):  G08B 21/14(2006.01) G08B 25/00(2006.01) (52) Cooperative Patent Classification (CPC): G08B 21/14; G08B 17/117; G08B 25/007 (86) International application number: PCT/US2021/033496 (87) International publication number: WO 2021/236986 (25.11.2021 Gazette 2021/47)

(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: 21.05.2020 US 202063028397 P 19.05.2021 US 202117324825 (71) Applicant: QUALCOMM INCORPORATED San Diego, California 92121-1714 (US)

(72) Inventors: CHILLA, Rajashekar San Diego, California 92121-1714 (US) SHAH, Abhi Umeshkumar San Diego, California 92121-1714 (US) PANDIT, Sanjeet San Diego, California 92121-1714 (US) GARIMELLA SRIVENKATA, Lakshmi Bhavani San Diego, California 92121-1714 (US) TAVEIRA, Michael Franco San Diego, California 92121-1714 (US) (74) Representative: Loveless, Ian Mark  Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street London E1 8QS London E1 8QS (GB)