US 12,244,381 B2
Channel information feedback method and communication apparatus
Xiang Ren, Shanghai (CN); Huangping Jin, Shanghai (CN); Xiaohan Wang, Shanghai (CN); Shibin Ge, Shanghai (CN); and Yiling Yuan, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jun. 29, 2022, as Appl. No. 17/852,957.
Application 17/852,957 is a continuation of application No. PCT/CN2019/130991, filed on Dec. 31, 2019.
Prior Publication US 2022/0329305 A1, Oct. 13, 2022
Int. Cl. H04B 7/06 (2006.01)
CPC H04B 7/0626 (2013.01) [H04B 7/063 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A channel information feedback method, comprising:
receiving, by a communication apparatus, first configuration information from a network device, wherein the first configuration information is used to configure a feedback mode indicating that to-be-fed-back information is a predicted PMI;
determining, by the communication apparatus, the predicted PMI based on a time offset T, window duration, and a time domain feedback granularity, wherein the time offset T is a period of time starting from a slot for channel information feedback, the time domain feedback granularity is N slots, and the window duration is Q*N slots, the Q*N slots are associated with predicted channel matrices used for determining the predicted PMI, wherein N and Q are integers; and
feeding back, by the communication apparatus, predicted PMI to the network device.