CSI Reporting with Segmented Precoding Matrix Feedback
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Solution Overview
Problem
The challenge in wireless communication systems is to improve the accuracy of channel state information, reduce resource overhead, and decrease system complexity in data transmission.
Innovation Solution
A method for reporting channel state information that involves configuring communication nodes to selectively report precoding matrix indicators using a combination of coefficients and vectors, and employing bitmaps and amplitude/phase quantization sets to optimize the reporting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional channel state information reporting methods are used, then the system complexity is high and resource overhead is large, but the accuracy of channel state information is insufficient
Solution Approach 1:
The precoding matrix is segmented into multiple vectors (first group of vectors and second group of vectors), where the first group represents dominant spatial directions and the second group provides additional refinement. This segmentation allows the system to report only essential components, reducing complexity while maintaining accuracy.
Solution Approach 2:
The patent extracts only the most critical components of the channel state information - specifically the dominant spatial directions represented by the first group of vectors and their corresponding coefficients. By taking out only these essential elements for reporting, the system achieves accurate channel representation with reduced overhead and complexity.
2Productivity
If traditional channel state information reporting methods are used, then the system complexity is high and resource overhead is large, but the data transmission efficiency is insufficient
Solution Approach 1:
The patent extracts and reports only the essential components of precoding matrix information - the first group of vectors representing dominant spatial directions and their coefficients - while omitting redundant information. This extraction approach reduces resource overhead for CSI reporting while maintaining sufficient accuracy for efficient data transmission.
Solution Approach 2:
Instead of reporting the complete precoding matrix information, the patent applies partial action by reporting only the first group of vectors and their coefficients, which capture the dominant characteristics of the channel. This partial reporting is sufficient for achieving good data transmission efficiency while significantly reducing resource overhead.
Data Source
AI summary
Provided are an information transmission method and device, and a storage medium. An information transmission method applied to a first communication node includes that: configuration information of a second communication node is received; and channel state information is reported to the second communication node according to the configuration information. The channel state information includes a precoding matrix indicator, a precoding matrix corresponding to the precoding matrix indicator includes a combination of a first coefficient and a first group of vectors or a combination of a first coefficient, a first group of vectors and a second group of vectors.