US 12,255,718 B2
CSI feedback and receiving methods, apparatus, device, and storage medium
Hao Wu, Shenzhen (CN); Yijian Chen, Shenzhen (CN); Guozeng Zheng, Shenzhen (CN); Yong Li, Shenzhen (CN); Zhaohua Lu, Shenzhen (CN); and Yu Ngok Li, Shenzhen (CN)
Assigned to ZTE Corporation, Shenzhen (CN)
Filed by ZTE Corporation, Guangdong (CN)
Filed on Oct. 30, 2023, as Appl. No. 18/497,539.
Application 18/497,539 is a continuation of application No. 17/244,724, filed on Apr. 29, 2021, granted, now 11,804,886.
Application 17/244,724 is a continuation of application No. PCT/CN2019/114977, filed on Nov. 1, 2019.
Claims priority of application No. 201811302880.2 (CN), filed on Nov. 2, 2018.
Prior Publication US 2024/0080079 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/06 (2006.01); H04B 7/0417 (2017.01); H04B 7/0456 (2017.01); H04W 72/0453 (2023.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0417 (2013.01); H04B 7/0456 (2013.01); H04B 7/0639 (2013.01); H04W 72/0453 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A channel state information (CSI) feedback method, comprising:
determining, by a terminal, precoding matrix indication information (PMI), wherein:
the PMI comprises:
first base vector information associated with first base vectors;
second base vector information associated with second base vectors; and
second coefficient information, used to derive first coefficients and second coefficients, the second coefficient information comprising second coefficient amplitude information and second coefficient phase information; and
a CSI feedback band comprises a plurality of frequency domain units, each frequency domain unit having a plurality of frequency domain resources and the frequency domain units respectively belong to a plurality of frequency domain unit sets; and
feeding back, by the terminal, CSI containing the PMI to a base station.