Wi-Fi CSI Threshold Signaling for Selective Reporting
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Solution Overview
Problem
Current Wi-Fi technologies lack an efficient method to indicate Channel State Information (CSI) thresholds during wireless local area network (WLAN) sensing measurements, which affects the accuracy and efficiency of CSI reporting.
Innovation Solution
A communication method and apparatus that determine and send a target radio frame containing a CSI threshold, allowing responders to decide whether to report CSI measurement values based on the threshold, thereby optimizing CSI reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If responders report CSI measurement values continuously without threshold comparison, then the completeness of CSI information is improved, but the signaling overhead and network resource consumption increase
Solution Approach 1:
The patent introduces a CSI threshold parameter that changes the reporting condition from continuous to conditional. The responder compares the CSI measurement value against the threshold and only reports when the condition is met, thereby reducing signaling overhead while maintaining essential information completeness.
Solution Approach 2:
Instead of requiring continuous CSI reporting (excessive action), the patent implements partial reporting based on threshold comparison. This selective reporting approach reduces unnecessary signaling while ensuring that significant CSI changes are captured.
2Measurement precision
If responders report CSI measurement values frequently, then the real-time accuracy of channel state information is improved, but the network processing load and resource consumption increase
Solution Approach 1:
The patent changes the reporting frequency parameter from fixed/frequent to conditional/threshold-based. By comparing CSI values against a threshold, the system maintains measurement precision for significant changes while reducing processing load during stable channel conditions.
Solution Approach 2:
The patent implements periodic threshold comparison rather than continuous reporting. The responder periodically measures CSI and compares it against the threshold, creating a rhythm of reporting only when necessary, thus balancing accuracy with processing efficiency.
3Loss of information
If responders always send CSI measurement values to initiators, then the information availability for network optimization is improved, but the communication overhead and latency increase
Solution Approach 1:
The patent changes the reporting parameter from unconditional to conditional based on threshold comparison. This reduces the number of reporting events, thereby decreasing overall latency while maintaining data availability for significant channel state changes.
Solution Approach 2:
The patent extracts only the necessary CSI information that meets the threshold condition, rather than transmitting all measured values. This selective extraction reduces communication overhead and latency while preserving essential information for network optimization.
Data Source
AI summary
A communication method includes: determining a target radio frame, the target radio frame including a channel state information (CSI) threshold, and the CSI threshold being configured for a responder to send a CSI measurement value to an initiator according to the CSI threshold; and sending the target radio frame.