公开(公告)号：US20250132790A1

公开(公告)日：2025-04-24

申请号：US19002155

申请日：2024-12-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Li FAN ,  Qibo QIN ,  Shujing CHEN ,  Zhimeng ZHONG ,  Huangping JIN

IPC: H04B7/0417 ,  H04B7/06

Abstract: Embodiments of this application provide a channel state information (CSI) reporting method and a communications apparatus. In the method, a receiving device obtains first CSI and second CSI, and determines reference information based on the first CSI and the second CSI. The first CSI is correlated with the second CSI, the reference information includes first quantization information including projection quantization information of a common subspace and second quantization information including projection quantization information of a first non-common subspace, the common subspace includes an intersection of a first space used to quantize the first CSI and a second space used to quantize the second CSI, and the first non-common subspace includes a subspace other than the common subspace in the first space. The receiving device sends the reference information to a sending device, and the sending device determines the first CSI based on the reference information and the second CSI.