WiFi CSI
Overview
Wi-Fi CSI (Channel State Information) is a technology that perceives environmental states by analyzing signal propagation variations during wireless transmission, enabling applications such as health monitoring, activity recognition, and intelligent security.
Realtek WiFi chips support capturing high-precision CSI data from multiple Wi-Fi packet types (e.g., data/management/control frames), including both unicast and broadcast communication modes. Combined with network topologies such as STA/SoftAP/hybrid networks, this enables highly adaptable scenario-specific solutions.
Advantages
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Rich Configuration Interfaces
Realtek Wi-Fi CSI enables standardized API interfaces and customizable configurations (e.g., subcarrier selection, sampling rate adjustment), supporting STA/SoftAP/hybrid-network topologies to deliver highly flexible scenario-based solutions for developers
Low Deployment Costs
Reuses existing Wi-Fi infrastructure without additional sensors.
Lightweight computing architecture allows edge devices to perform real-time processing (e.g., compact machine learning models).
Non-Line-of-Sight Penetration
Capable of penetrating walls and furniture to detect activities in obscured scenarios (e.g., human presence through barriers).
Privacy Protection
Relies on analyzing wireless signal fluctuations instead of capturing images/videos, eliminating privacy risks associated with cameras.