Wireless Tracking System With Management Unit For Privacy-Preserving Positioning
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Solution Overview
Problem
Current wireless tracking systems face challenges with privacy concerns, slow detection speed, and high costs due to reliance on periodically broadcasted radio signals and discovery modes, which are not suitable for large-scale use and are inefficient in indoor/outdoor environments.
Innovation Solution
A tracking system with a management unit that selectively controls tracking stations to 'ping' devices, allowing them to remain hidden and reducing overall traffic, using existing technologies like Bluetooth, while scheduling device pinging based on previous sightings, movement patterns, and Quality of Service (QoS) requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If devices use discovery mode to allow tracking, then tracking accuracy is improved, but user privacy is compromised and security risks increase
Solution Approach 1:
Instead of having devices broadcast their presence in discovery mode (traditional approach), the tracking system actively pings devices to detect their presence. This inverts the detection mechanism: rather than devices announcing themselves, the system queries them, allowing devices to remain invisible and preserve privacy while still enabling tracking when needed.
Solution Approach 2:
The system introduces an intermediary management unit that coordinates tracking activities between tracking stations and devices. This mediator manages the ping operations, controls which devices are tracked, and handles the communication overhead, separating the tracking function from the device's core operations and reducing privacy risks.
2Measurement precision
If periodic radio signal scanning is used to track devices, then device position can be determined, but detection speed is slow and system resources are consumed
Solution Approach 1:
The system implements periodic ping operations managed by a management unit, which schedules tracking activities at optimized intervals rather than continuous scanning. This periodic approach reduces system resource consumption and detection latency while maintaining adequate tracking accuracy, as pings are sent only when needed based on movement patterns and QoS requirements.
Solution Approach 2:
The management unit performs preliminary actions by predicting device movement patterns and proactively scheduling ping operations before devices actually move to new locations. This preliminary detection approach reduces detection latency and improves response time compared to waiting for periodic scans to naturally detect position changes.
3Area of stationary object
If multiple tracking stations scan for radio signals simultaneously, then tracking coverage is improved, but overall network traffic increases and system complexity grows
Solution Approach 1:
The system merges the tracking functions of multiple tracking stations under a centralized management unit that coordinates their activities. Instead of each station operating independently with full scanning capabilities, the management unit consolidates control, assigning specific ping tasks to appropriate stations based on device location and tracking requirements, reducing redundant operations and system complexity.
Solution Approach 2:
The management unit segments the tracking task distribution across multiple tracking stations, assigning specific devices or geographic areas to individual stations based on predicted device locations and QoS requirements. This segmentation reduces overall network traffic by eliminating redundant pings from multiple stations and simplifies system management through divided responsibilities.
Data Source
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AI summary
For allowing a reliable and fast determination of the position of devices with a high degree of privacy preservation a tracking system for determination of the position of devices within a wireless network is claimed, wherein the tracking system is comprising a number of tracking stations, each tracking station being adapted for wireless communication with at least one device. The system is characterized by a management unit for control of a tracking activity of the tracking stations. Further, an according method for tracking the position of a device within a wireless network is claimed, preferably for use with the above mentioned tracking system.