UWB Angle of Approach via Intermediary Measurement Reports
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Solution Overview
Problem
Incorporating multiple ultra-wideband (UWB) devices or transceivers into individual devices for determining the angle of approach (AoA) is cost-prohibitive and space-consuming, as it requires complex hardware.
Innovation Solution
A system where a first device with simplified hardware, including a compass and accelerometer, leverages measurement reports from a second device with multiple UWB devices to calculate its AoA, using UWB measurements and sensor data to determine azimuth and elevation angles, thereby reducing the need for multiple UWB antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple UWB devices or transceivers are incorporated into a device for determining AoA, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces an intermediary approach where a first device with simplified hardware determines AoA by leveraging measurement reports from a second device with multiple UWB transceivers. The second device acts as a mediator that performs the complex multi-antenna measurements and provides the results to the first device, allowing accurate AoA determination without requiring the first device to have complex multi-antenna hardware.
Solution Approach 2:
The first device obtains AoA measurement data by receiving measurement reports from the second device. Instead of performing complex multi-antenna measurements itself, the first device copies or leverages the measurement data generated by the second device's multiple UWB transceivers, achieving the same measurement precision benefit without the hardware complexity.
2Measurement precision
If multiple UWB devices or transceivers are incorporated into a device for determining AoA, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The system architecture allows a first device with simpler, cheaper hardware to achieve accurate AoA measurements by using measurement reports from a second device. This intermediary approach enables manufacturers to produce cheaper devices that still provide accurate AoA functionality by leveraging the capabilities of another device in the system.
Solution Approach 2:
The first device copies the measurement capabilities of the second device by receiving and processing its measurement reports. This allows the first device to achieve the same measurement precision as a multi-antenna device would provide, without incurring the high manufacturing costs of incorporating multiple UWB transceivers.
3Measurement precision
If multiple UWB devices or transceivers are incorporated into a device for determining AoA, then measurement precision is improved, but device volume increases
Solution Approach 1:
The first device maintains a compact form factor by using simplified hardware and obtaining AoA measurements through measurement reports from the second device. The intermediary measurement report mechanism allows the first device to achieve accurate AoA determination without needing to accommodate multiple large UWB transceiver components.
Solution Approach 2:
The first device achieves the measurement precision of a multi-antenna system by copying the measurement data from the second device's measurement reports, rather than physically incorporating multiple antennas. This virtual copying approach maintains the compact size of the first device while providing accurate AoA measurements.
Data Source
AI summary
Disclosed herein are related to a system and a method for determining an Angle of Approach (AoA) of a device. A first device may receive a report from a second device having a plurality of ultra-wideband (UWB) devices. The report may include a plurality of values comprising an elevation component and an azimuth component of the AoA from the first device. At least some of the plurality of values may be obtained according to measurements between the plurality of UWB devices of the second devices and the at least one UWB device of the first device. The first device may determine an AoA from the second device, using the plurality of values from the report received from the second device.