Base Station Location Verification for GPS Spoofing
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Solution Overview
Problem
GPS spoofing attacks can lead to satellite signal loss and incorrect location determination in mobile communication devices like drones and smart cars, compromising their navigation reliability.
Innovation Solution
A location verification method and system that involves broadcasting a location verification request with a random number and mobility ID, generating a signature-verified location verification message using public and private keys, and re-verifying the device's location based on GPS information and current time from multiple base stations, which are periodically updated and managed efficiently to prevent spoofing attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS information is used for location verification, then navigation capability is improved, but vulnerability to GPS spoofing attacks increases
Solution Approach 1:
The patent introduces base stations as intermediary entities that mediate between GPS satellites and mobile communication devices. The base stations receive GPS signals, verify their authenticity, and forward verified location information to mobile devices. This intermediary layer filters out spoofed GPS signals, resolving the contradiction by maintaining navigation capability while blocking harmful spoofing attacks.
Solution Approach 2:
The patent implements a feedback mechanism where base stations continuously monitor GPS signals, compare them against known legitimate satellite patterns, and provide verification feedback to mobile devices. This feedback loop enables real-time detection and rejection of spoofed signals, enhancing location verification reliability without compromising navigation functionality.
2Reliability
If multiple base stations are deployed for location verification, then anti-spoofing capability is improved, but system complexity increases
Solution Approach 1:
The patent divides the location verification system into segmented functional components: GPS signal reception at base stations, independent verification processes at each base station, and centralized coordination through key management servers. This segmentation allows multiple base stations to operate independently with standardized protocols, improving anti-spoofing capability through distributed verification while managing system complexity through modular architecture.
Solution Approach 2:
The patent creates universal base station units that can perform multiple functions: GPS signal reception, signal verification, location calculation, and communication with mobile devices. Each base station is designed as a multi-functional entity that can operate independently or in coordination with other base stations, reducing overall system complexity through standardized universal components.
3Reliability
If public keys are stored in mobile communication devices, then verification security is improved, but memory usage increases
Solution Approach 1:
The patent extracts the heavy cryptographic key storage burden from mobile communication devices and places it in base stations and key management servers. Mobile devices only store minimal verification data needed for operational security, while comprehensive public key infrastructure is maintained in dedicated infrastructure elements. This extraction resolves the contradiction by maintaining verification security through distributed key management while minimizing memory usage in resource-constrained mobile devices.
Data Source
AI summary
A location verification system according to an embodiment of the present disclosure includes a plurality of base stations located in respective preset areas and transmitting, to an adjacent mobile communication device, location verification information obtained by signing GPS information on the base stations with a private key. It is possible to expect an effect of re-verifying a location of a mobile communication device, such as a drone or a smart car, at a destination, when the mobile communication device has moved to the destination based on GPS information.