Vehicle Function Control Using Wireless Position Verification
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Solution Overview
Problem
Existing vehicle function management systems face challenges in accurately and securely changing settings based on vehicle position, particularly due to GNSS spoofing attacks and weather/topography-induced inaccuracies, leading to inappropriate function settings.
Innovation Solution
A vehicle-function management device that utilizes short-range wireless communication and certificate data to determine vehicle position and enable/disable functions based on specific area settings, enhancing accuracy and security by combining GNSS positional information with position determination data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If GNSS positional information is used to determine vehicle position for function setting changes, then the system can operate with simple positioning, but the accuracy and reliability deteriorate due to spoofing attacks and weather/topography-induced inaccuracies
Solution Approach 1:
The patent combines multiple positioning methods (GNSS and short-range wireless communication) to determine vehicle position. By merging these different positioning systems, the patent achieves both simplicity and high accuracy, resolving the contradiction between device complexity and measurement precision.
Solution Approach 2:
The patent introduces certificate data as an intermediary that verifies and validates position information from multiple sources. This intermediary layer ensures accurate position determination by cross-checking data from GNSS and short-range wireless communication, preventing spoofing attacks while maintaining system simplicity.
2Device complexity
If only GNSS is used for position determination, then the system remains simple, but reliability deteriorates due to spoofing attacks and environmental factors
Solution Approach 1:
The patent merges GNSS positioning with short-range wireless communication positioning to create a redundant verification system. This combination maintains relative simplicity while significantly improving reliability by cross-validating position data from independent sources.
Solution Approach 2:
The patent prepares certificate data in advance that contains expected position information from multiple sources. This beforehand preparation cushions against spoofing attacks and environmental interference by having pre-validated position data to compare against real-time measurements.
3Adaptability or versatility
If function settings are changed based on position determination, then area-specific control is achieved, but security worsens due to potential false position determinations from spoofing attacks
Solution Approach 1:
The patent uses certificate data as an intermediary that mediates between position determination and function setting changes. The certificate data verifies that the determined position is authentic and not spoofed, enabling secure area-specific control while preventing security vulnerabilities.
Solution Approach 2:
The patent implements feedback by comparing real-time position data from multiple sources against expected position information in certificate data. This feedback mechanism detects false position determinations and prevents inappropriate function settings, maintaining security while enabling adaptability.
Data Source
AI summary
A vehicle-function management device includes one or more processors and a storage medium storing a program. The program includes one or more instructions that cause the one or more processors to acquire certificate data including contents of a function's setting of a vehicle in a specific area and effective-distance information regarding a change of the function's setting, acquire positional information of the vehicle, determine a position of the vehicle by short-range wireless communication, change the function's setting in accordance with the contents of the function's setting in the certificate data when it is determined that the vehicle is in the specific area designated by the certificate data, and terminate a state in which the function's setting has been changed when a travel distance of the vehicle in a state in which the function's setting has been changed exceeds a travel distance indicated by the effective-distance information.