Method and apparatus for determining channel state information, and terminal device and network-side device
By using the codebooks of antenna arrays and subarrays to construct beamforming precoding information in the channel state information, the feedback problem of spatial non-stationary channels is solved, and a more accurate channel state description is achieved.
WO2026145549A1PCT designated stage Publication Date: 2026-07-09VIVO MOBILE COMM CO LTD
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- VIVO MOBILE COMM CO LTD
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing channel state information feedback methods are not applicable to spatially non-stationary channels, resulting in inaccurate channel state descriptions.
Method used
By feeding back the codewords of the first codebook corresponding to the antenna array and the second codebook corresponding to the antenna subarray in the channel state information, beamforming precoding information is constructed to more accurately describe the spatial non-stationary channel.
Benefits of technology
It enables a more accurate description of spatially non-stationary channels and improves the feedback accuracy of channel state information.
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Abstract
The present application belongs to the technical field of communications. Disclosed are a method and apparatus for determining channel state information, and a terminal device and a network-side device. The method for determining channel state information in the embodiments of the present application comprises: a terminal device receiving first configuration information sent by a network-side device, wherein the first configuration information is used for indicating configuration parameters of an antenna sub-array; the terminal device performing channel measurement on the basis of a reference signal sent by the network-side device; and the terminal device reporting channel state information to the network-side device, wherein the channel state information comprises beamforming precoding information, and the beamforming precoding information is composed of codewords in a first codebook and / or codewords in a second codebook, the first codebook is a set of precoding vectors corresponding to an antenna array of the network-side device, and the second codebook is a set of precoding vectors corresponding to the antenna sub-array of the network-side device.
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