RF Sensing Mode Selection Based on Surface Environment
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Solution Overview
Problem
Existing radiofrequency sensing methods, such as RSSI-based and CSI-based sensing, face challenges in achieving reliable and accurate sensing due to environmental interactions, with CSI being inaccurate and RSSI providing less detailed information.
Innovation Solution
A system that adapts radiofrequency sensing modes based on environmental information, such as material, texture, and location of surfaces, to select and modify sensing modes like CSI, RSSI, or Doppler, enhancing accuracy and reliability by simulating signal propagation paths and applying rules for optimal mode selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CSI-based sensing is used, then measurement precision is improved, but reliability deteriorates due to environmental interactions
Solution Approach 1:
The system dynamically switches between CSI-based and RSSI-based sensing modes based on environmental conditions. The selecting unit determines the current environment type (e.g., multipath-rich or attenuation-prone) and adapts the sensing mode accordingly, making the system flexible rather than static.
Solution Approach 2:
The system changes the sensing parameter (measurement type) based on environmental characteristics. When environmental information indicates favorable conditions, CSI measurements are used for high precision; when conditions deteriorate, the system switches to RSSI measurements for reliable performance.
2Reliability
If RSSI-based sensing is used, then reliability is improved, but measurement precision deteriorates due to less detailed information
Solution Approach 1:
The system dynamically selects between RSSI and CSI modes based on real-time environmental assessment. The selecting unit evaluates environmental information and transitions between sensing modes to optimize performance for current conditions.
Solution Approach 2:
The system adjusts the measurement parameter (RSSI vs CSI) according to environmental suitability. RSSI is selected for reliable broad coverage, while CSI is selected when environmental conditions support high-precision measurements.
3Reliability
If environmental information processing is added, then sensing reliability and accuracy are improved, but device complexity increases
Solution Approach 1:
The system segments the sensing function into distinct modules: an environmental information providing unit, a selecting unit, and a controlling unit. Each module has a specific function, making the overall complex system manageable through functional decomposition.
Solution Approach 2:
The selecting unit acts as an intermediary between environmental information and the sensing execution. It processes environmental data and determines the appropriate sensing mode, serving as a mediator that simplifies the decision-making process.
Data Source
AI summary
The invention refers to a system for controlling a radiofrequency sensing of a network 100. The network is adapted to perform different radiofrequency sensing modes, e.g. RSSI-, CSSI- or Doppler based modes. The system 130 comprises a providing unit 131 for providing environmental information, wherein the environmental information is indicative of a physical property of one or more surfaces in an environment of the network. A selecting unit 132 is adapted for selecting and/or modifying a radiofrequency sensing mode to be performed by the network, wherein the radiofrequency sensing mode is selected and/or modified based on the environmental information, and a controlling unit 133 is adapted for controlling the network 100 to perform the selected and/or modified sensing mode Taking the physical properties of surfaces in an environment into account and modifying and/or selecting the utilized radiofrequency sensing mode accordingly increases the reliability and the accuracy of the radiofrequency sensing.