V2X Message Verification Using Neighbor-Vehicle Confidence Checks
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Solution Overview
Problem
Inaccurate, corrupted, or intentionally falsified data in Vehicle-to-Everything (V2X) messages poses a significant risk to the efficiency and safety of intelligent transportation systems, potentially leading to reduced efficiency and endangering human safety.
Innovation Solution
A vehicle processing system verifies V2X messages by comparing information from a first vehicle with that received from neighbor vehicles, determining consistency, and performing security actions when inconsistencies exceed a confidence threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X messages are transmitted without verification, then communication efficiency is maintained, but data accuracy and safety are compromised
Solution Approach 1:
The patent introduces a verification system that acts as an intermediary between V2X message transmission and reception. This system compares information from multiple neighbor vehicles to verify the accuracy of received messages, thereby improving reliability without requiring fundamental changes to the existing V2X communication protocol structure
Solution Approach 2:
The verification system implements a feedback mechanism where received V2X messages are cross-checked against information from neighbor vehicles. When inconsistencies are detected beyond a confidence threshold, the system generates security actions or alerts, creating a closed-loop verification process that continuously improves message accuracy
2Measurement precision
If verification processes are implemented for all V2X messages, then data accuracy improves, but processing time increases
Solution Approach 1:
The verification system dynamically adjusts the confidence threshold parameter based on traffic conditions, message types, and environmental factors. By changing this parameter, the system can balance verification strictness against processing time requirements, performing more thorough verification only when necessary
Solution Approach 2:
The system performs verification selectively rather than uniformly on all messages. It applies full verification only when inconsistency exceeds the confidence threshold, while accepting messages that fall within acceptable parameters without extensive processing, thus reducing average processing time while maintaining accuracy
3Reliability
If information from multiple neighbor vehicles is collected and compared, then verification reliability improves, but system complexity and computational load increase
Solution Approach 1:
The verification system segments the verification process into distinct modules: receiving V2X information from multiple sources, comparing information consistency, determining confidence levels, and generating security actions. This segmentation allows each module to be optimized independently and simplifies the overall system architecture
Solution Approach 2:
The verification system is designed to handle multiple types of V2X messages and information formats universally. It can verify basic safety messages, cooperative awareness messages, and other V2X communications using the same core verification logic, reducing the need for message-specific verification code
Data Source
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AI summary
Various embodiments include method performed by a processor of a vehicle processing system for misbehavior detection, including receiving first vehicle-to-everything (V2X) information from a first vehicle, receiving second V2X information from neighbor vehicles of the first vehicle, determining a distribution of information in the second V2X information, and performing a security action in response to determining that information in the first V2X information is outside a confidence threshold of the distribution of information in the second V2X information.