(19)
(11) EP 4 740 311 A1

(12)

(43) Date of publication:
13.05.2026 Bulletin 2026/20

(21) Application number: 23776223.2

(22) Date of filing: 09.08.2023
(51) International Patent Classification (IPC): 
H04B 7/0417(2017.01)
H04L 5/00(2006.01)
 H04B 7/06(2006.01)
(52) Cooperative Patent Classification (CPC):
H04L 5/0051; H04L 5/0016; H04L 5/0094; H04L 5/0023; H04B 7/0626; H04L 5/0048; H04L 5/0057
(86) International application number:
PCT/CN2023/111881
(87) International publication number:
WO 2025/030408 (13.02.2025 Gazette 2025/07)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(71) Applicant: Google LLC
Mountain View, CA 94043 (US)

(72) Inventors:
  • LIOU, Jia-Hong
    Taipei City, Taiwan 10548 (TW)
  • ZHANG, Yushu
    Beijing 100190 (CN)

(74) Representative: Marks & Clerk GST 
1 New York Street
Manchester M1 4HD
Manchester M1 4HD (GB)

   


(54) OVERHEAD REDUCTION FOR CHANNEL STATE INFORMATION REFERENCE SIGNAL WITH LARGE NUMBER OF ANTENNA PORTS