Neural CSI Bit Encoding for Low-Overhead Multi-Antenna Feedback
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently reporting channel state information due to high uplink resource overhead and complexity in multi-antenna environments, particularly in 5G and future communication systems.
Innovation Solution
A method involving terminals measuring channel state information, generating a bit sequence through encoding, and sending it to a base station, along with a base station receiving and decoding this bit sequence to acquire channel state information, utilizing encoding and decoding models based on neural networks to optimize resource usage and reduce complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel state information is reported in traditional multi-antenna systems, then the base station can acquire channel state information for scheduling and beamforming, but the uplink resource overhead increases significantly
Solution Approach 1:
The patent extracts only the essential channel state information parameters needed for base station scheduling and beamforming decisions, rather than reporting complete channel matrices. The terminal measures reference signals and generates compact channel state information reports containing only the most critical parameters, significantly reducing uplink resource overhead while maintaining sufficient accuracy for multi-antenna operations.
Solution Approach 2:
The channel state information reporting is segmented into different components that can be reported selectively. The patent divides channel state information into multiple parts including channel quality indicators, precoding matrix indicators, and rank indicators, allowing the terminal to report only the necessary segments based on current channel conditions and base station requirements, thereby optimizing resource usage.
2Reliability
If detailed channel state information is reported for multi-antenna systems, then the base station can optimize beamforming and scheduling, but the system complexity increases
Solution Approach 1:
The patent applies local quality by reporting channel state information at different granularities for different frequency resources and antenna ports. Instead of uniformly reporting detailed information across all resources, the system adapts the reporting detail to local channel conditions and requirements, reducing overall system complexity while maintaining beamforming optimization capability where needed.
3Reliability
If complete channel state information is fed back from terminal to base station, then the base station can make accurate scheduling decisions, but the uplink transmission time increases
Solution Approach 1:
The patent implements partial action by reporting channel state information at optimized intervals and only when significant channel changes occur. Instead of continuous complete reporting, the terminal monitors channel conditions and triggers reports only when necessary, reducing uplink transmission time while maintaining scheduling decision accuracy through event-driven reporting mechanisms.
Data Source
AI summary
Provided are a channel state information sending method and receiving method, a device, and a storage medium. The channel state information sending method includes: measuring, by a terminal, a reference signal from a base station, to determine channel state information; generating, by the terminal, a bit sequence according to the channel state information; and sending, by the terminal, the bit sequence to the base station.