UWB AoA Positioning with Range-Specific Phase Correction
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Solution Overview
Problem
Existing positioning technologies using ultra-wideband (UWB) communication face challenges in accurately calculating the angle of arrival (AoA) due to signal interference, process deviation, and measurement errors, leading to inaccuracies in determining the location of external electronic devices.
Innovation Solution
An electronic device equipped with a communication module, memory, and processor applies different correction values corresponding to specific angle ranges between antennas and external devices, dividing data ranges to enhance AoA calculation accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single correction value is applied to all angle ranges in AoA calculation, then the calculation process is simple, but the accuracy is insufficient in some angle ranges
Solution Approach 1:
The patent divides the angle range into multiple segments (e.g., −30° to 30°, 30° to 60°, −60° to −30°, 60° to 90°, etc.) and applies different correction values to each segment. This segmentation allows the system to achieve high accuracy across all angle ranges by using range-specific correction values rather than a single universal correction value.
Solution Approach 2:
The patent implements local quality by using different correction values for different angle ranges. Each angle range has its own optimized correction value that is specifically tailored to the characteristics of that range, thereby improving measurement precision locally in each segment while maintaining overall system accuracy.
2Measurement precision
If multiple correction values are applied for different angle ranges, then the AoA calculation accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing correction values for different angle ranges in a lookup table or memory structure. During runtime, the system only needs to determine the current angle range and retrieve the corresponding correction value, rather than performing complex real-time calculations. This preliminary preparation reduces the computational burden during actual AoA measurements.
Solution Approach 2:
The system implements self-service by automatically determining which angle range the current measurement falls into and selecting the appropriate correction value without requiring manual intervention. The processor autonomously manages the selection and application of correction values based on the measured phase difference and predefined range criteria.
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
This approach enables precise AoA calculations within specified errors and accuracies, improving the reliability of positioning external devices using UWB communication.
Implementation Method 1
An electronic device supporting ultra-wideband (UWB) communication from among various wireless communication schemes can provide a precise positioning function
Implementation Method 2
the angle of arrival of the signal can be calculated using a distance between two or more antennas receiving the signal and a phase difference of arrival (PDoA) of the signal received at each of the antennas
Data Source
AI summary
An electronic device may include: a communication module that supports ultra-wideband communication; a memory that stores correction values respectively corresponding to a plurality of data ranges divided according to a specified condition, in relation to data for positioning of an external electronic device; a processor operatively connected to the communication module and the memory; and a location determination module operatively connected to the processor. The location determination module may be configured to: acquire a phase difference of arrival of a signal calculated on the basis of the signal received from the external electronic device via the communication module; determine a data range corresponding to the acquired phase difference of arrival of the signal from among the plurality of data ranges; and calculate the angle of arrival of the signal by using a correction value corresponding to the determined data range from among the correction values. Various other embodiments are possible.