UWB Positioning Handover via BLE Mediator
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Solution Overview
Problem
Ultra-wide band (UWB) communication systems face disruptions in metal-enclosed vehicles, leading to inaccurate location tracking and navigation due to signal blocking, especially in vehicles like cars.
Innovation Solution
An electronic device equipped with both UWB and Bluetooth Low Energy (BLE) communication circuits, which dynamically switches between UWB and BLE communication based on signal strength and user proximity to maintain accurate location measurement and navigation by handover and resumption of communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB communication is used for position detection, then positioning accuracy is improved, but signal blocking by metal structures causes communication disruption
Solution Approach 1:
The patent introduces a second external electronic device as an intermediary to perform UWB communication with anchors on behalf of the portable electronic device when inside a vehicle. This mediator device communicates with the external anchors to obtain positioning information, bypassing the metal shielding problem while maintaining positioning accuracy.
Solution Approach 2:
The system dynamically switches between two communication modes: direct UWB communication when outside vehicles and indirect communication through a second device when inside vehicles. The portable electronic device determines whether it is inside a vehicle and adjusts the communication path accordingly, making the system adaptable to different environmental conditions.
2Duration of action of stationary object
If direct UWB communication is maintained, then positioning continuity is improved, but metal shielding causes signal blockage and measurement failure
Solution Approach 1:
The second external electronic device serves as a mediator that maintains positioning continuity by performing UWB communication with anchors when the portable device is inside a vehicle. This intermediary approach ensures uninterrupted positioning service despite metal shielding.
Solution Approach 2:
The system performs preliminary determination of whether the portable device is inside a vehicle and proactively switches to the indirect communication mode before positioning failure occurs. This preliminary action prevents signal blockage issues by adjusting the communication path in advance.
Data Source
AI summary
An electronic device includes a first wireless communication circuit configured to perform ultra wide band (UWB) communication; a second wireless communication circuit configured to perform different wireless communication; and a processor configured to: perform first UWB communication for position detection through a first UWB communication channel with a plurality of first external electronic devices using the first wireless communication circuit, detect a first event corresponding to a handover of the position detection to a second external electronic device while the first UWB communication is performed, and based on the first event, stop the position detection through the first UWB communication channel, and transmit communication information to the second external electronic device using the second wireless communication circuit, wherein the communication information is used by the second external electronic device to perform a second UWB communication with the plurality of first external electronic devices.