Wi-Fi Access Point Location Tracking for Time-Critical Shipments
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Solution Overview
Problem
Current logistics tracking systems for time-critical shipments are inadequate, often resulting in delays and errors due to lack of accurate real-time location tracking, especially in environments where GPS signals are blocked, and manual verification processes lead to mistakes such as packages being left behind or misrouted.
Innovation Solution
A system comprising a client device that communicates via Wi-Fi and GSM to determine its location by matching Wi-Fi access point data with a database, providing real-time location tracking and alerting mechanisms to ensure packages are on schedule, with features like battery-saving protocols and integration with flight tracking services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS tracking is used for real-time location monitoring, then location accuracy is improved, but power consumption increases significantly
Solution Approach 1:
The patent uses Wi-Fi access points as intermediary location references instead of direct GPS satellite signals. The tracking device captures Wi-Fi signal information (MAC addresses, signal strengths) and transmits it to a server that performs location triangulation, providing accurate indoor location data without requiring continuous GPS signal acquisition or high-power consumption.
Solution Approach 2:
The patent replaces the mechanical/electromagnetic GPS satellite positioning system with a wireless network-based location system. Instead of relying on GPS satellites for continuous positioning, the system uses Wi-Fi infrastructure (access points, routers) to establish location through signal strength measurements and triangulation algorithms, significantly reducing power requirements.
2Reliability
If continuous location tracking is implemented, then shipment reliability is improved, but device battery life decreases
Solution Approach 1:
The patent implements periodic location reporting instead of continuous tracking. The tracking device periodically checks for available Wi-Fi networks and reports location data at scheduled intervals or when specific events occur (e.g., flight takeoff, landing, or when entering/exiting designated areas). This periodic approach maintains reliable tracking while preserving battery life by keeping the device in low-power states between reports.
Solution Approach 2:
The system uses feedback mechanisms where the server receives location data, compares it against expected shipment progress, and provides feedback about shipment status. The device can adjust its reporting frequency based on this feedback - increasing reports when delays are detected and reducing frequency when on schedule, thereby optimizing both reliability and power consumption dynamically.
3Device complexity
If manual verification of package location is used, then system complexity is reduced, but measurement precision and reliability deteriorate
Solution Approach 1:
The tracking device automatically performs location determination using Wi-Fi signal detection without requiring manual intervention. The device autonomously captures Wi-Fi information, transmits it to the server, and receives location data back without human involvement in the measurement process. This self-service approach eliminates manual verification while providing precise automated location tracking.
Solution Approach 2:
The patent replaces manual location verification with an automated electronic system. Instead of relying on human operators to check package locations, the system uses wireless communication protocols (Wi-Fi, GSM) to automatically determine and transmit location data, substituting mechanical/manual processes with electronic automation that provides superior precision and reliability.
4Measurement precision
If location data is transmitted frequently, then real-time tracking accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic location reporting where the device transmits location data at scheduled intervals or triggered by specific events rather than continuously. The device can be configured to report at optimal times (e.g., during flight segments, when entering new geographic zones, or when Wi-Fi networks change) providing real-time accuracy when needed while minimizing unnecessary transmissions that would consume energy.
Solution Approach 2:
The system dynamically adjusts transmission parameters based on shipment conditions and location context. The reporting frequency and intensity can change based on factors such as flight status, geographic location, time of day, and network availability. This parameter adaptation allows the system to optimize the balance between real-time tracking accuracy and energy consumption by transmitting more frequently when critical and less frequently when stable.
Data Source
AI summary
A client-server system and method for calculating whether time-crucial shipment is located according to expectation comprising a device and a remote special purpose computer, the device comprising a non-lithium battery; a Wi-Fi receiver; a GSM module; an accelerometer; a Wi-Fi antenna; a GSM antenna; and a microcontroller programmed to store identification data of each Wi-Fi access point within range and time each Wi-Fi access point was accessed, to automatically turn off the GSM module when aircraft engine vibration is detected; and to automatically transmit via GSM protocol the Wi-Fi access point data when aircraft engine vibration is no longer detected.The remote special purpose computer uses a flight plans database and a Wi-Fi access point database to calculate location of the device based on the Wi-Fi access point data received via GSM and compare the calculated location to an expected location based on a flight plan.