BLE Beacon Location Tracking via Relay Segmentation
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Solution Overview
Problem
Existing systems lack an effective method to accurately locate mobile devices within a given area, particularly in environments like hospitals, care facilities, and commercial venues, where tracking individuals or assets is crucial for safety, security, and operational efficiency.
Innovation Solution
A system utilizing Bluetooth Low Energy (BLE) messages for mobile devices to transmit beacon signals, which are received by relay devices with known locations, and then relayed to a console device to decode and determine the approximate location of the mobile device, using signal strength and device identifiers to triangulate the position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional location tracking systems are used, then location accuracy can be achieved, but system complexity and infrastructure requirements increase significantly
Solution Approach 1:
The system segments the location tracking function by introducing relay devices that act as intermediaries between mobile devices and the central console. Each relay device independently receives BLE signals, processes location data, and forwards it to the console, distributing the system complexity across multiple simple nodes rather than requiring a complex centralized system.
Solution Approach 2:
Relay devices serve as intermediaries that simplify the communication between mobile devices and the console. These relay devices receive BLE beacon signals from mobile devices, encode the information with their own identifiers, and transmit to the console, which then decodes and determines location. This intermediary layer reduces the complexity at each individual component while maintaining location accuracy.
2Loss of information
If extensive infrastructure is deployed for location tracking, then location data can be collected, but installation and operational costs increase
Solution Approach 1:
The mobile devices perform self-tracking by autonomously transmitting their own location data via BLE beacon signals without requiring active participation from the infrastructure devices. The relay devices passively receive and forward these signals, and the console passively collects and processes the data, reducing the need for complex active infrastructure and lowering installation costs.
Solution Approach 2:
The system uses BLE (Bluetooth Low Energy) technology which changes the operational parameters from traditional high-power wireless communications to low-power, low-cost radio frequency signals. This parameter change enables location tracking with minimal infrastructure investment while maintaining effective range and accuracy for the intended applications.
3Reliability
If complex communication protocols are used for location tracking, then data transmission can be reliable, but processing time and energy consumption increase
Solution Approach 1:
The mobile devices transmit location data using periodic BLE beacon signals rather than continuous communication. This periodic transmission pattern maintains reliable location updates while significantly reducing energy consumption compared to continuous protocols, as the devices can enter low-power states between transmissions and the relay devices similarly operate in periodic listen-transmit cycles.
Data Source
AI summary
A system and method for locating a mobile device are presented. A mobile device is configured to transmit a beacon signal encoding an identifier of the mobile device. A relay device has a known location and is configured to receive the beacon signal from the mobile device, the beacon signal having a signal level, encode the identifier of the mobile device, the signal level, and an identifier of the relay device into a message, and transmit the message. A console device is configured to decode the message received from the relay device to identify an approximate location of the mobile device.