UWB Anchor Positioning for Shared Mobility Services
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Solution Overview
Problem
Current shared mobility services face challenges in providing accurate vehicle and object positioning due to the limitations of GPS technology, which results in errors and inefficiencies, especially in areas with poor GPS reception.
Innovation Solution
The implementation of Ultra WideBand (UWB) technology, where anchors mounted on vehicles form links with IT devices carried by customers, using a smart anchor positioning algorithm to estimate positions and perform position-based security authentication, enabling precise location determination and service delivery even in GPS-unavailable areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If GPS-based positioning technology is used for shared mobility service, then the service can be provided over large areas, but the positioning precision deteriorates with an average error of 2 to 5 meters
Solution Approach 1:
The patent segments the positioning system into two parts: GPS for large-area coverage and UWB for precise localization. The UWB anchor nodes are deployed in the service area to create a high-precision positioning network that works in conjunction with GPS, allowing the system to maintain both wide coverage and high precision (within 0.5 meters) simultaneously.
Solution Approach 2:
UWB anchor nodes serve as intermediary elements between the GPS satellite system and the vehicle positioning system. These anchors receive GPS coordinates and UWB signals, then calculate precise vehicle positions through trilateration, acting as a mediator that transforms GPS-wide-area coverage into high-precision local positioning.
2Measurement precision
If UWB technology is used to improve positioning precision, then positioning accuracy improves to within 0.5 meters, but the device complexity increases due to additional anchor nodes and algorithms
Solution Approach 1:
The UWB anchor nodes perform self-positioning by receiving GPS coordinates from satellites and automatically calculating their own positions. This eliminates the need for manual positioning of each anchor node, significantly reducing installation and maintenance complexity while maintaining high positioning precision through automated GPS-UWB integration.
Solution Approach 2:
The patent merges GPS and UWB technologies into a unified positioning system. The GPS provides wide-area location data while UWB provides precise relative positioning, and the two systems are combined through anchor nodes that process both types of data, achieving high precision without requiring a completely separate complex UWB infrastructure.
3Measurement precision
If multiple anchors are deployed to improve positioning accuracy, then the positioning precision improves, but the link formation rate may deteriorate in areas with obstacles blocking signals
Solution Approach 1:
The patent applies local quality by deploying UWB anchor nodes at specific locations optimized for line-of-sight communication with high-frequency movement areas. Anchors are strategically positioned to maximize their effective coverage zones, ensuring reliable link formation in critical areas while maintaining positioning precision through localized high-quality signal coverage.
4Adaptability or versatility
If GPS is used for vehicle navigation, then the service can operate globally, but positioning errors of 2 to 5 meters cause inefficiencies in precise vehicle-customer matching
Solution Approach 1:
The system performs preliminary positioning using GPS to bring the vehicle into proximity with the customer location, then switches to UWB-based precise positioning for final vehicle-customer matching. This two-stage approach maintains global service capability through GPS while achieving the sub-meter precision needed for efficient service delivery in the final approach phase.
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 enhances the accuracy of vehicle and object positioning, improves link formation rates, and ensures secure and efficient shared mobility services by leveraging UWB pulse waves and smart anchor-based algorithms, effectively addressing GPS-related errors.
Implementation Method 1
The one or more anchors and the IT device transmit or receive UWB pulse waves
Data Source
AI summary
A mobility service providing method and apparatus are provided. The method includes: moving, by a vehicle, to a customer when the customer requests the vehicle to provide a mobility service and forming, by one or more anchors mounted on the vehicle, an Ultra-Wide Band (UWB) link with an information technology (IT) device carried by the customer when a determination is made that a distance between the vehicle and the customer is within a predetermined distance; performing a smart anchor positioning (SAP) algorithm to estimate a position of the IT device; performing position-based security authentication with the customer; and arriving, by the vehicle, at the customer, wherein the one or more anchors and the IT device transmit or receive UWB pulse waves.