Single Locator AoA HADM Spatial Positioning
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Solution Overview
Problem
Current methods for determining the spatial position of a network device require multiple locator devices, which increases cost and complexity due to the need for communication between multiple locators to share information.
Innovation Solution
A system and method using a single locator device with an antenna array to calculate the direction and distance to a network device using AoX and HADM algorithms, respectively, allowing for the determination of the network device's spatial position without the need for multiple locator devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple locator devices are used to determine spatial position, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines angle of arrival (AoA) measurement and distance measurement (HADM) functions into a single locator device. The locator device simultaneously performs both AoA determination using antenna array signal processing and distance determination using HADM protocol, eliminating the need for multiple separate locator devices while maintaining spatial position determination capability
Solution Approach 2:
The locator device is designed with multi-functionality, serving both as an AoA measurement device and a distance measurement device. The same hardware platform executes both the AoA algorithm (using signals from multiple antennas) and the HADM algorithm (using signals from a single antenna), making the device universal and reducing system complexity
2Measurement precision
If multiple locator devices are used to determine spatial position, then measurement precision is improved, but loss of time increases due to communication requirements
Solution Approach 1:
The patent extracts the communication requirement between multiple locator devices and eliminates it by using a single locator device. The locator independently determines both the angle of arrival and distance to the wireless device, then calculates spatial position without needing to exchange information with other locators, thereby removing the time loss associated with inter-locator communication
3Measurement precision
If all antenna elements are used for HADM calculation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the antenna array into two functional groups: multiple antenna elements dedicated to AoA measurement and a single antenna element (or one polarization component) dedicated to HADM distance measurement. This segmentation allows each subset of antennas to be optimized for its specific function, simplifying the overall system configuration while maintaining both measurement capabilities
Data Source
AI summary
A system and method for determine the spatial position of a network device is disclosed. A locator device having an antenna array is used to perform an AoX calculation to find the direction to the network device. The AoX calculation utilizes a plurality of the antennas in the antenna array. The locator device also performs a high accuracy distance measurement (HADM). In certain embodiments, only one antenna in the antenna array is used for the HADM calculation. Using the direction and the distance to the network device, the locator is able to determine the spatial position of the network device. In some embodiments, the antenna array may a rotational symmetry array having a plurality of outer antenna elements and one central antenna element.