AR Device Antenna Array Segmentation for Indoor AoA Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In indoor environments, the accuracy of angle of arrival (AoA) estimation for target devices in augmented reality (AR) systems is compromised due to multi-path data communication links, requiring a large number of antennas which is impractical due to power consumption, design, size, and weight limitations.
Innovation Solution
An electronic device equipped with a display module, camera module, communication module, and processor, capable of transmitting images, receiving AR images, displaying them, recognizing target objects, and estimating the distance and direction of target devices using hybrid angle of arrival estimation algorithms, even with a limited number of antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of antennas are used to improve angle of arrival estimation accuracy in indoor environments, then measurement precision improves, but device complexity, size, weight, and power consumption increase
Solution Approach 1:
The patent segments the antenna array into multiple sub-arrays, where each sub-array independently estimates angle of arrival for signals from different spatial regions. This segmentation allows accurate AoA estimation across the full field of view without requiring a single large antenna array, thereby reducing overall device complexity while maintaining measurement precision.
Solution Approach 2:
The patent transitions from a one-dimensional linear antenna array to a two-dimensional planar antenna array configuration. This dimensional change enables the system to resolve angles of arrival in both azimuth and elevation dimensions, improving measurement precision without proportionally increasing the number of antennas required compared to a linear expansion.
2Reliability
If a large number of antennas are deployed to achieve reliable angle of arrival estimation, then reliability improves, but ease of manufacture deteriorates due to design and implementation constraints
Solution Approach 1:
By dividing the antenna array into manageable sub-arrays, the patent makes the system easier to manufacture and implement. Each sub-array can be designed, tested, and assembled independently, reducing manufacturing complexity and improving reliability through modular architecture while avoiding the need for a single large complex antenna system.
Solution Approach 2:
The patent employs dynamic beamforming techniques where the system can electronically steer and focus beams in different directions without physically moving antennas. This dynamic capability achieves reliable angle of arrival estimation across multiple directions using a fixed, manageable number of antennas, improving both reliability and ease of manufacture.
Data Source
AI summary
An electronic device may include a display, a camera, a communication circuitry, and a processor, wherein the processor may be configured to: control to transmit an image obtained through the camera to an external device through the communication circuitry, receive an AR image including at least one object from the external device through the communication circuitry and display same through the display, recognize a target object from among the at least one object, and map one of peripheral devices found on a data communication link through the communication circuitry to a target device corresponding to the recognized target object. Various embodiments are possible.