US 12,445,182 B2
Communication method and communications apparatus
Xueru Li, Beijing (CN); Mingxin Gong, Beijing (CN); and Bingyu Qu, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Dec. 15, 2022, as Appl. No. 18/066,478.
Application 18/066,478 is a continuation of application No. PCT/CN2021/099999, filed on Jun. 15, 2021.
Claims priority of application No. 202010546421.X (CN), filed on Jun. 16, 2020.
Prior Publication US 2023/0128138 A1, Apr. 27, 2023
Int. Cl. H04B 7/06 (2006.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0632 (2013.01); H04B 7/0639 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A communication method, comprising:
receiving, by a terminal device, first signaling, wherein the first signaling is used to configure K1 channel state information-reference signal CSI-RS resources; and
reporting, by the terminal device, channel state information CSI, wherein the CSI comprises a channel quality indicator CQI of a first codeword, a channel measurement part used to calculate the CQI of the first codeword is determined based on channel measurement results of K2 CSI-RS resources, and the K2 CSI-RS resources are resources in the K1 CSI-RS resources, wherein
both K1 and K2 are positive integers, K1 is greater than 1, and K2 is greater than 1 and less than or equal to K1;
wherein the COI of the first codeword is determined conditionally based on a precoding matrix indicator PMI, and a quantity of rows of a precoding matrix indicated by the PMI is equal to a sum of all or some port quantities of the K2 CSI-RS resources; and
wherein the CSI is determined based on a channel measurement result of a kth CSI-RS resource in the K2 CSI-RS resources, a kth first parameter and a reference precoding matrix.