Anchor-Based Wireless Positioning With Clock Error Compensation
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Solution Overview
Problem
Existing methods for obtaining location information in IoT environments rely on messages from master and initiator devices, which can be inefficient and may not be suitable for all scenarios.
Innovation Solution
An electronic device obtains location information by receiving initiation, response, and final messages from anchor devices, using time intervals between message transmissions to calculate distances, and compensating for clock errors to determine its position without relying on master or initiator devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing methods rely on messages from master and initiator devices for location information, then the positioning system can obtain location data, but the system becomes inefficient and less suitable for various scenarios
Solution Approach 1:
The electronic device performs self-localization by independently calculating its position based on time difference of arrival measurements from multiple anchor devices. The device autonomously receives initiation messages, response messages, and final messages, then computes location information without requiring master or initiator device coordination, enabling the system to serve itself and improving both efficiency and adaptability
2Measurement precision
If the electronic device uses time intervals between message transmissions to calculate distances, then positioning accuracy is improved, but clock errors between devices affect measurement precision
Solution Approach 1:
The system incorporates feedback mechanisms where the electronic device receives multiple types of messages (initiation, response, final) containing timing information from anchor devices. By analyzing the time intervals between these messages and comparing expected versus actual arrival times, the device can identify and compensate for clock synchronization errors, thereby maintaining measurement reliability while achieving positioning accuracy
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 method allows for accurate and efficient location determination using wireless communication with anchor devices, reducing reliance on external messaging and improving positioning accuracy.
Implementation Method 1
a ranging technique for measuring a distance between electronic devices by using ultra wide band (UWB)
Data Source
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AI summary
Provided is a method, performed by an electronic device, of obtaining location information. In detail, provided is a method, performed by an electronic device, of obtaining relative location information with respect to anchor devices by wirelessly communicating with the anchor devices.