US 12,445,338 B2
Frequency offset estimation method and apparatus, electronic device, and computer-readable storage medium
Lijuan Zhao, Guangdong (CN); and Qing Bian, Guangdong (CN)
Assigned to SANECHIPS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 18/692,824
Filed by SANECHIPS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Mar. 21, 2022, PCT No. PCT/CN2022/081933
§ 371(c)(1), (2) Date Mar. 17, 2024,
PCT Pub. No. WO2023/040225, PCT Pub. Date Mar. 23, 2023.
Claims priority of application No. 202111112962.2 (CN), filed on Sep. 18, 2021.
Prior Publication US 2024/0372768 A1, Nov. 7, 2024
Int. Cl. H04L 27/26 (2006.01); H04L 27/00 (2006.01)
CPC H04L 27/266 (2013.01) [H04L 27/0014 (2013.01); H04L 2027/0026 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A frequency offset estimation method, comprising:
adopting a first frequency offset estimation method to perform frequency offset estimation on a demodulation reference signal (DMRS) sent from a terminal, to obtain a first frequency offset estimated value;
adopting a second frequency offset estimation method to perform frequency offset estimation on the DMRS sent from the terminal, to obtain a second frequency offset estimated value; and
determining a confidence factor according to the first frequency offset estimated value and the second frequency offset estimated value, and calibrating the second frequency offset estimated value according to the confidence factor to obtain a final frequency offset estimated value.