ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,272, issued on Sept. 23, was assigned to BEIJING XIAOMI MOBILE SOFTWARE Co. LTD. (Beijing).

"Channel estimation method and apparatus, communication device, and storage medium" was invented by Yuanyuan Li (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided by an example of the disclosure is a channel estimation method, the method being applied by a sending end and including: sending demodulation reference signals (DMRSs) on a comb resource; where after the demodulation reference signals (DMRSs) transmitted on different frequency bands of the comb resource are transformed to a time domain, pilot sequences that are equivalent are obtained...