V2X Message Confidence Evaluation Using MAP Consistency Checks
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Solution Overview
Problem
Existing systems face challenges in determining the reliability of V2X-compliant messages received from other vehicles, as these messages may contain incorrect or unreliable information, which can lead to suboptimal or dangerous vehicle actions.
Innovation Solution
The system calculates a confidence score by comparing V2X-compliant messages from other vehicles to MAP-compliant messages from traffic control devices, evaluating consistency in behavior and position, and using this score to determine whether to perform specific actions on the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If V2X-compliant messages from other vehicles are used to control vehicle actions, then vehicle control responsiveness is improved, but reliability deteriorates due to potential incorrect or corrupted information
Solution Approach 1:
The patent introduces MAP-compliant messages from traffic control devices as an intermediary reference to verify V2X messages. The evaluation system acts as a mediator that compares V2X message content against MAP message content (such as traffic light states, intersection topology) to determine reliability before executing vehicle actions, thus maintaining responsiveness while filtering out corrupted information
Solution Approach 2:
The system implements a feedback mechanism where V2X messages are continuously evaluated against MAP messages, and the reliability determination feeds back into whether vehicle actions are executed. This closed-loop approach ensures that only verified reliable messages trigger vehicle responses, maintaining both speed and reliability
2Reliability
If message verification and confidence evaluation are performed, then reliability is improved, but processing time increases
Solution Approach 1:
The system performs partial verification by focusing evaluation on critical message elements (such as traffic light state consistency, intersection topology matching) rather than exhaustive verification of all message components. This selective approach maintains high reliability for safety-critical parameters while minimizing unnecessary processing time
Solution Approach 2:
The system pre-establishes evaluation criteria and confidence thresholds before message verification occurs. By having predetermined rules for comparing V2X and MAP messages and established confidence level thresholds, the system avoids complex real-time decision-making, thus reducing processing time while maintaining verification accuracy
Data Source
AI summary
A confidence score (or other measure) that is related to the reliability of map data (MAP) messages is received at a vehicle. Vehicle-to-everything (V2X) messages are received from other vehicles and compared to the MAP-compliant messages. For example, behavior and position of the other vehicles in view of the content of the MAP messages is evaluated for consistency and a numeric score or measure assigned to V2X messages associated with the other vehicles. The score is compared to a threshold and based upon the comparison, a determination can be made as to whether to use the V2X-compliant messages from the other vehicles to perform an action at the vehicle (e.g., control a component of the vehicle).