BTLE Mobile Tag Positioning via Server Calculation
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Solution Overview
Problem
Bluetooth Low Energy (BTLE) technology faces challenges in accurately determining the position of mobile tags within indoor environments due to the need for multiple array antennas and complex hardware infrastructure, which increases implementation complexity and cost.
Innovation Solution
A method and apparatus utilizing BTLE messages where a mobile tag receives signals from multiple fixed tags, measures radio parameters, and transmits these along with its identifier to a server, allowing the server to calculate the mobile tag's position using pre-stored position data and radio signal strength, enabling accurate indoor positioning without the need for extensive hardware infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple array antennas and complex hardware infrastructure are used for indoor positioning, then positioning accuracy is improved, but device complexity and implementation cost increase
Solution Approach 1:
The patent replaces complex mechanical hardware infrastructure (multiple array antennas) with a software-based solution using Bluetooth Low Energy message handling and radio parameter measurement. The positioning system uses standard BTLE devices with simple antennas, and achieves accuracy through signal processing algorithms that measure radio parameters from multiple fixed tags, substituting hardware complexity with computational methods
Solution Approach 2:
The patent introduces mobile tags as intermediaries that receive BTLE messages from fixed tags and relay information to a server. These mobile tags act as mediators between the fixed tag infrastructure and the positioning calculation system, enabling accurate position determination without requiring complex receiving hardware at the mobile device end
2Measurement precision
If multiple array antennas and complex hardware infrastructure are used for indoor positioning, then positioning accuracy is improved, but implementation cost increases
Solution Approach 1:
The patent employs inexpensive Bluetooth Low Energy tags (both fixed and mobile) that can be manufactured at low cost using standard BTLE technology. These tags replace expensive specialized positioning hardware, leveraging widely available, low-cost wireless communication components to achieve accurate indoor positioning without requiring proprietary or specialized equipment
Solution Approach 2:
The patent substitutes expensive hardware infrastructure with software-based positioning methods using standard BTLE devices. By using off-the-shelf Bluetooth components and processing radio parameters through a server, the system eliminates the need for costly specialized positioning hardware while maintaining 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 approach simplifies the implementation of indoor positioning systems by leveraging existing BTLE hardware, providing accurate location calculation of mobile tags relative to fixed tags, thereby reducing implementation complexity and costs while maintaining high accuracy.
Implementation Method 1
a mobile tag receiving at least one first Bluetooth Low Energy message transmitted from each of at least two fixed tags... the mobile tag measuring a radio parameter for each of the received first Bluetooth Low Energy messages
Data Source
AI summary
A method comprises: a mobile tag receiving at least one first Bluetooth Low Energy message transmitted from each of at least two fixed tags, each first Bluetooth Low Energy message including at least an identifier corresponding to the respective fixed tag; the mobile tag measuring a radio parameter for each of the received first Bluetooth Low Energy messages; and the mobile tag transmitting a second Bluetooth Low Energy message including the identifiers of each of the fixed tags, the measured radio parameters associated with each of the received first Bluetooth Low Energy messages, and an identifier corresponding to the mobile tag, said second Bluetooth Low Energy message enabling the calculation of a position of the mobile tag by a server apparatus. A further method comprises: a Bluetooth receiver device receiving at least one second Bluetooth Low Energy message from a mobile tag; the Bluetooth receiver device decoding from the message identifiers of at least two fixed tags from which first Bluetooth Low Energy messages have been transmitted; the Bluetooth receiver device decoding from the message measured radio parameters associated with the first Bluetooth Low Energy messages; and the Bluetooth receiver device decoding from the message an identifier corresponding to the mobile tag; server apparatus retrieving position data corresponding to each of the fixed tags using their respective identifiers; and the server apparatus using the position data and the radio parameters included in the second Bluetooth Low Energy message to calculate a position of the mobile tag.