CSI Precoding Matrix Feedback Under Constrained Reporting Overhead
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Solution Overview
Problem
The accuracy of channel state information (CSI) affects data transmission efficiency, while excessive overhead in reporting CSI reduces system performance, and insufficient overhead decreases accuracy.
Innovation Solution
A method to control the overhead for reporting precoding matrix information within a constrained range by using configuration information to ensure accurate CSI feedback without compromising system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the overhead for reporting channel state information is increased, then the accuracy of channel state information is improved, but the performance of the wireless system is reduced
Solution Approach 1:
The patent segments the channel state information into different components (channel quality indicator, precoding matrix indicator, rank indicator) and applies different overhead constraints to different parts. The base station configures specific overhead limits for precoding matrix information reporting, allowing selective optimization of different CSI components to balance accuracy and system performance.
Solution Approach 2:
The patent changes the parameter of overhead size for precoding matrix information reporting by configuring it within a constrained range. The base station adjusts the overhead parameter dynamically based on channel conditions and system requirements, optimizing the balance between CSI accuracy and wireless system performance through parameter tuning.
2Productivity
If the overhead for reporting channel state information is decreased, then the performance of the wireless system is improved, but the accuracy of channel state information is reduced
Solution Approach 1:
The patent applies partial action by reporting only the most critical precoding matrix information within the constrained overhead range, rather than reporting complete CSI. The terminal selectively reports precoding matrix indicators that provide sufficient accuracy for data transmission while staying within the overhead limits configured by the base station.
3Measurement precision
If the overhead for reporting precoding matrix information is increased, then the accuracy of precoding matrix information is improved, but the system complexity is increased
Solution Approach 1:
The patent extracts only the essential precoding matrix information from the complete channel state information and reports it separately with dedicated overhead constraints. By taking out the precoding matrix indicator as a distinct component with controlled overhead, the system achieves accurate precoding while managing overall complexity through selective extraction and separate handling of critical parameters.
Data Source
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AI summary
Provided are a channel state information reporting and receiving method, a communication node, and a storage medium. The method includes acquiring configuration information for channel state information; and reporting the channel state information to a second communication node according to the configuration information. The channel state information includes precoding matrix information. The overhead for reporting the precoding matrix information is within a constrained range.