Mobile Wireless Device Path Verification via Location Certificates
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Solution Overview
Problem
Existing methods for tracking and verifying the paths of mobile wireless devices in monitored spaces are inefficient, especially in closed environments, and lack high-resolution accuracy due to reliance on GPS and network connectivity, which can be unreliable or impractical in restricted areas.
Innovation Solution
A system utilizing limited-range wireless transceivers and receivers to transmit and receive location certificates, allowing mobile devices to verify their paths by collecting and transmitting these certificates to verification units, which estimate and validate the paths against approved routes, enhancing security and disinfection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If GPS and network connectivity are used for path tracking, then coverage area is improved, but measurement precision deteriorates in closed environments
Solution Approach 1:
The system divides the monitored space into multiple zones, each covered by wireless transceivers at predefined locations. Instead of relying on a single global positioning system that fails in closed environments, the space is segmented into local coverage areas where each transceiver provides precise location verification within its range, collectively achieving both wide coverage and high precision.
Solution Approach 2:
Wireless transceivers deployed at predefined locations act as intermediaries between the mobile device and the verification system. These transceivers receive location information from mobile devices and provide location certificates, serving as mediators that enable accurate path tracking in closed environments without requiring direct GPS connectivity.
2Measurement precision
If wireless transceivers are deployed at predefined locations with limited range, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The wireless transceivers are designed to perform multiple functions: receiving device IDs, determining device locations, issuing location certificates, and communicating with verification units. This multi-functionality reduces the need for separate specialized components, thereby managing system complexity while maintaining high measurement precision through the standardized transceiver design.
Solution Approach 2:
Mobile wireless devices autonomously collect location certificates from transceivers along their paths and transmit these certificates to verification units. The system enables self-verification where the mobile device itself gathers the necessary location data without requiring complex centralized tracking infrastructure, simplifying the overall system architecture.
3Reliability
If location certificates are collected and transmitted for path verification, then reliability is improved, but loss of time increases due to data transmission and verification processing
Solution Approach 1:
Location certificates are collected continuously as mobile devices move through the monitored space, rather than being generated and transmitted only when verification is needed. This preliminary collection ensures that verification data is already available when required, reducing verification processing time while maintaining high reliability through pre-validated location information.
Solution Approach 2:
The system uses location certificates that contain copies of location verification data issued by transceivers. Instead of transmitting raw sensor data or requiring complex real-time analysis, the system exchanges standardized certificate copies that encapsulate verified location information, streamlining the verification process and reducing processing time while maintaining authentication reliability.
Data Source
AI summary
Provided herein are methods and systems for verifying a path in a monitored space, comprising transmitting a device identification (ID) of the mobile wireless device while the mobile wireless device moves through a monitored space, receiving one or more location certificates transmitted, in response to reception of the device ID, by one or more wireless transceivers deployed at a predefined location in the monitored space and having a limited transmission range, each location certificate comprising at least the device ID and a transceiver ID of the respective wireless transceiver, storing the one or more location certificates, and transmitting the one or more location certificates to one or more verification units configured to verify a path of the mobile wireless device in the monitored space estimated according to the predefined location of the one or more wireless transceivers identified by the transceiver ID extracted from the one or more location certificates.