RF Sensing Channel Switching for Accuracy-Energy Balance
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Solution Overview
Problem
Existing RF-based sensing technologies face challenges in achieving accurate and efficient sensing with optimal energy consumption, as blindly switching between single and multi-channel communication technologies does not necessarily improve performance.
Innovation Solution
A RF-based sensing device that dynamically selects a multi-channel communication technology based on the detection results of a single-channel technology, optimizing bandwidth, energy, and calculation effort, and coordinating frequency hopping to enhance accuracy and verification of sensing events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-channel communication technology is used continuously for RF-based sensing, then measurement precision is improved, but use of energy and calculation effort increase significantly
Solution Approach 1:
The system performs RF-based sensing periodically by alternating between single-channel and multi-channel communication technologies. The sensing device uses single-channel technology for routine operations and switches to multi-channel technology only when sensing events are detected, thereby reducing overall energy consumption while maintaining measurement precision when needed.
Solution Approach 2:
The system dynamically adapts its communication technology based on detected sensing events. It transitions from a static single-channel mode to a dynamic multi-channel mode when events are detected, optimizing the balance between measurement precision and energy consumption according to real-time conditions.
2Use of energy by moving object
If single-channel communication technology is used continuously for RF-based sensing, then energy consumption is reduced, but measurement precision deteriorates
Solution Approach 1:
The system periodically switches between single-channel and multi-channel communication technologies based on detected sensing events. Single-channel technology is used for routine low-energy operations, while multi-channel technology is activated periodically when sensing events occur, ensuring measurement precision is maintained when needed without continuous high energy consumption.
3Measurement precision
If multi-channel communication technology is used without coordination, then sensing coverage is improved, but device complexity increases
Solution Approach 1:
The system uses feedback from single-channel sensing detection to control the activation of multi-channel communication technology. When sensing events are detected by the single-channel technology, this feedback triggers the selection and activation of appropriate multi-channel communication technologies, coordinating their use to improve sensing accuracy while managing device complexity through event-driven activation.
Solution Approach 2:
The system performs preliminary sensing using single-channel communication technology before activating multi-channel technology. This preliminary action identifies sensing events that require further investigation, allowing the system to prepare and coordinate multi-channel technology activation only when necessary, thereby reducing overall device complexity while maintaining sensing coverage.
4Use of energy by moving object
If single-channel communication technology is used for detecting sensing events, then energy consumption is reduced, but reliability of detection decreases
Solution Approach 1:
The system uses feedback from single-channel sensing detection to trigger verification using multi-channel communication technology. When sensing events are detected by the energy-efficient single-channel technology, this feedback initiates a verification process using multi-channel technology, thereby improving detection reliability while maintaining low overall energy consumption through selective verification.
Solution Approach 2:
The system performs preliminary detection using single-channel communication technology to identify potential sensing events with low energy consumption. This preliminary action is followed by verification using multi-channel technology only when events are detected, thereby improving overall detection reliability while maintaining energy efficiency through the preliminary screening approach.
Data Source
AI summary
The present invention relates to performing radio frequency (RF)-based sensing. RF-based sensing is performed by a single-channel communication technology in order to detect a sensing event. Upon detecting the sensing event, a multi-channel communication technology is selected in dependence of the single-channel communication technology used for detecting the sensing event. RF-based sensing is then performed based on the multi-channel communication technology. This allows to first perform a coarse detection of a sensing event using the single-channel communication technology and orchestrate a subsequent RF-based sensing using the multi-channel communication technology in order to improve accuracy of the RF-based sensing. The frequency channels (412) used by the multi-channel communication technology can be selected in dependence of the frequency channel (402) used by the single-channel communication technology in order to improve the RF-based sensing, e.g., by maximizing or minimizing an overlap between the frequency channels (402, 412).