Wireless Channel Sounding for In-Cabin Device Occupancy Detection
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Solution Overview
Problem
Conventional techniques for wireless device location and identity verification in operational environments, such as automobiles, are inefficient and often require additional hardware resources like button presses or biometric techniques.
Innovation Solution
Utilizing channel sounding features of wireless connections, combined with application data, to perform location and identity determination operations, enabling efficient identification and localization of wireless devices within operational environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional techniques are used for wireless device location and identity verification, then basic detection functionality is provided, but additional hardware resources and verification operations are required
Solution Approach 1:
The patent applies multi-functionality by enabling existing wireless communication hardware to perform both data transmission and occupancy detection functions. The wireless device's communication module is used to transmit channel sounding signals that simultaneously serve communication purposes and enable occupancy detection, eliminating the need for separate detection hardware.
Solution Approach 2:
The system uses the wireless device's own communication signals for self-detection. The device transmits channel sounding signals and processes the reflected signals to determine occupancy status, allowing the same hardware to serve both communication and detection purposes without additional components.
2Reliability
If conventional techniques are used for wireless device location and identity verification, then basic detection is possible, but verification operations become more complex
Solution Approach 1:
The patent changes the parameters used for verification from traditional biometric data to channel sounding signal characteristics. By analyzing properties such as signal reflection patterns, time of flight, and channel impulse response, the system achieves reliable identity verification through wireless channel features rather than complex biometric operations.
3Measurement precision
If additional hardware resources are used for occupancy detection, then detection accuracy may improve, but device complexity and cost increase
Solution Approach 1:
The patent enables existing wireless communication hardware to perform dual functions: data transmission and occupancy detection. The same antenna and transceiver used for communication are utilized to transmit and receive channel sounding signals, achieving detection functionality without additional hardware components.
Solution Approach 2:
The patent introduces channel sounding signals as an intermediary mechanism that enables occupancy detection through existing communication hardware. These specialized signals serve as a mediator that allows the communication system to extract occupancy information without requiring dedicated detection equipment.
Data Source
AI summary
Systems, methods, and devices locate and identify wireless devices within operational environments such as automobile environments. Methods include determining, using one or more processors of a central wireless device, one or more identifiers associated with a peripheral wireless device, and performing, using the one or more processors, a wireless exchange with the peripheral wireless device, the wireless exchange comprising one or more channel sounding operations compatible with a wireless communications protocol. Methods further include determining a plurality of estimated distances based on channel sounding data obtained by the central wireless device and received from a plurality of remote wireless devices based on the wireless exchange, and determining a location and identity of the peripheral wireless device within an operational environment based on the plurality of estimated distances and the one or more identifiers.