Terminal CSI Correction Reporting for Dynamic Interference
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately reporting channel state information (CSI) due to dynamic interference, which affects data transmission efficiency and quality, especially in multi-node systems where interference cancellation performance is critical.
Innovation Solution
A method and apparatus for reporting CSI by transmitting CSI correction information to a base station, indicating changes in channel state due to dynamic interference, allowing for improved downlink channel scheduling and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-node coordinated communication is used to increase data throughput, then system capacity and SINR are improved, but interference management complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device reports CSI correction information to the network device. This feedback loop allows the network to adaptively adjust interference cancellation parameters based on actual channel conditions, thereby managing interference complexity dynamically while maintaining high throughput in multi-node coordinated communication systems.
2Measurement precision
If CSI is reported frequently to capture dynamic interference changes, then channel state accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential correction information from the full CSI report. Instead of reporting complete CSI frequently, the terminal identifies and reports only the correction values that capture dynamic interference changes. This extraction approach maintains channel state accuracy while significantly reducing signaling overhead compared to frequent full CSI reporting.
3Reliability
If interference cancellation is performed to improve SINR, then transmission quality is improved, but processing complexity at terminal increases
Solution Approach 1:
The network device performs preliminary interference cancellation processing before transmission and provides cancellation reference information to the terminal. This preliminary action reduces the processing burden on the terminal, as the terminal only needs to perform residual interference cancellation using the provided reference information, rather than performing complete interference cancellation from scratch.
Data Source
AI summary
Disclosed is a method for reporting a channel state in a wireless communication system, the method performed by a terminal and including reporting channel state information (CSI) to a base station (BS), transmitting CSI correction information for correcting the reported CSI, to the BS, and receiving a downlink channel scheduled based on the CSI correction information, wherein the CSI correction information indicates a change in channel state due to dynamic interference.