UWB Gesture Identification with Adaptive OWR and TWR Ranging
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Solution Overview
Problem
Existing wireless communication systems lack effective methods for service initiation and user gesture input using Ultra-Wide Band (UWB) one-way ranging (OWR) and two-way ranging (TWR) techniques.
Innovation Solution
A method and device utilizing UWB OWR and TWR for identifying user gesture inputs by receiving UWB advertisement messages for angle of arrival (AoA) measurement, determining a scheme to identify user gestures through UWB OWR alone or in combination with TWR, and employing a transceiver and controller to facilitate this process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB OWR is used for gesture identification, then measurement precision is improved, but device complexity increases due to requiring AoA measurement capabilities
Solution Approach 1:
The system dynamically selects between two gesture identification schemes based on real-time conditions: OWR-based AoA measurement for high precision when available, and TWR-based distance measurement as a fallback. This dynamic adaptation resolves the contradiction by allowing the system to achieve high measurement precision when OWR capabilities are present while avoiding increased device complexity when using the simpler TWR approach.
Solution Approach 2:
The patent changes the measurement parameter from distance (TWR) to angle of arrival (OWR) based on system capabilities and requirements. By switching between these different parameters depending on whether AoA measurement hardware is available and what level of gesture identification precision is needed, the system resolves the contradiction between measurement precision and device complexity.
2Reliability
If both OWR and TWR are used for gesture identification, then reliability is improved, but use of energy increases
Solution Approach 1:
The system dynamically determines whether to use OWR alone, TWR alone, or both methods based on environmental conditions, device capabilities, and required reliability levels. When high reliability is needed and energy is available, both methods are used. When energy conservation is prioritized or conditions allow, only one method is used, thus resolving the contradiction between reliability and energy consumption.
3Measurement precision
If UWB advertisement messages are transmitted frequently for AoA measurement, then measurement precision is improved, but loss of energy increases due to continuous transmission
Solution Approach 1:
Instead of continuous transmission, the system uses periodic UWB advertisement messages at optimized intervals. This periodic transmission approach maintains sufficient AoA measurement precision for gesture identification while significantly reducing energy loss compared to continuous transmission, thus resolving the contradiction between measurement precision and energy consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate and efficient identification of user gestures using UWB communication, enhancing service initiation and user interaction in IoT environments.
Implementation Method 1
receiving a UWB advertisement message for measurement of an angle of arrival (AoA)
Implementation Method 2
UWB one-way ranging (OWR) and UWB two-way ranging (TWR)
Data Source
AI summary
The present disclosure provides a service beginning using a UWB OWR, and a user gesture input method. A method of an ultra-wide band (UWB) device, according to various embodiments of the present disclosure, comprises the steps of: receiving, from a second UWB device, a first UWB advertisement message for measurement of an angle of arrival (AoA) with a third UWB device, the UWB advertisement message being a message for UWB one-way ranging (OWR) and including information about a transmission period of the UWB advertisement message; and determining, on the basis of the information about the transmission period, a mode for identifying a user gesture input of the first UWB device, wherein the mode for identifying the user gesture input can be one of a first mode using the UWB OWR in order to identify the user gesture input and a second mode using both the UWB OWR and UWB two-way ranging (TWR) with the third UWB device in order to identify the user gesture input.