CSI Reporting Timing for AI-Based Beam Management
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beamforming and reducing the number of channel state information-reference signals (CSI-RSs) while maintaining high beamforming gain and beam receive sensitivity.
Innovation Solution
A method for configuring and reporting CSI based on predicted application times, allowing for reduced CSI-RSs without compromising beam management performance, by using configuration information to estimate and report CSI with specific application times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the number of CSI-RSs is reduced to lower overhead and complexity, then device complexity and signal overhead are reduced, but beam management performance and measurement precision deteriorate
Solution Approach 1:
The patent applies preliminary action by having the terminal predict the application time of CSI before actual reporting. The terminal uses configuration information to estimate when CSI will be applied, and reports based on this prediction. This allows the system to reduce the number of CSI-RS measurements needed while maintaining beam management performance, as measurements are performed only when predicted to be most useful rather than continuously.
2Quantity of substance
If CSI-RSs are reduced for resource efficiency, then resource overhead is reduced, but data rate and reliability may be compromised
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the CSI reporting behavior based on predicted application time. Instead of using a fixed number of CSI-RSs, the system changes the reporting parameters adaptively - reporting CSI when prediction indicates it will be applied, and reducing or skipping reports when application is not expected. This maintains reliability while reducing the quantity of CSI-RSs needed.
3Reliability
If continuous CSI reporting is performed to maintain beam quality, then beamforming gain is maintained, but resource overhead and energy consumption increase
Solution Approach 1:
The patent applies periodic action by replacing continuous CSI reporting with periodic reporting based on predicted application times. Instead of reporting CSI continuously or at fixed intervals, the terminal predicts when CSI will be applied and reports only at those predicted moments. This creates an adaptive periodic reporting scheme that maintains beam quality when needed while reducing energy consumption during periods when beam updates are not required.
Data Source
AI summary
The present disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data rate. The present disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, and security and safety related services) based on 5G communication technology and IoT related technology. The present disclosure relates to a method and apparatus for performing channel state information (CSI) measurement and reporting for artificial intelligence (AI)-based beam management in a wireless communication system.