Systems and methods for codebook design and channel state information report

WO2026060696A1PCT designated stage Publication Date: 2026-03-26ZTE CORP
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Existing codebook designs for wireless communications, particularly in 5G NR, struggle to adapt to varying wavefront propagation characteristics due to increased antenna array sizes, leading to inefficiencies in channel state information reporting.

Method used

A 'spherical codebook' design is introduced, dividing the antenna array into groups and using DFT-based codebooks for each group, allowing for enhanced channel state information reporting by considering different propagation characteristics.

Benefits of technology

The spherical codebook effectively adapts to varying wavefront propagation, improving channel state information reporting accuracy and efficiency in diverse wireless communication scenarios.

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Abstract

Methods, apparatus, and a computer program product for wireless communications are provided. The method includes the following steps: identifying, by a wireless communication device, codebook-related configuration information; and reporting, by the wireless communication device to a wireless communication node, Channel State Information (CSI) including Precoding Matrix Indicator (PMI) to determine a selected codebook based on the codebook-related configuration.
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Citation Information

Patent Citations

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