Infrastructure Edge Proxy Safety Message Validation
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Solution Overview
Problem
The accuracy of dynamic characteristics in vehicle-to-everything communication (V2X) messages is difficult to validate due to varying technologies used by different vehicle manufacturers, leading to incomplete or inaccurate reception of basic safety messages (BSMs) and personal safety messages (PSMs) by vehicles and infrastructure devices.
Innovation Solution
A method and system that utilize roadside sensors to detect and calculate dynamic characteristics of moving objects, generating proxy safety messages which are then authenticated and validated by infrastructure edge devices and vehicles, ensuring the accuracy and authenticity of the data transmitted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different vehicle manufacturers use different technologies for determining dynamic characteristics, then device complexity and adaptability are improved, but measurement precision and reliability of safety messages deteriorate
Solution Approach 1:
The patent introduces an infrastructure control device as an intermediary that receives dynamic characteristic data from multiple vehicle manufacturers, validates the data against predetermined criteria, and generates standardized safety messages. This mediator resolves the contradiction by enabling compatibility across different manufacturers while maintaining measurement precision through centralized validation.
Solution Approach 2:
The system changes the validation parameters by establishing predetermined accuracy thresholds and validation criteria for dynamic characteristics. The infrastructure control device compares received data against these parameters, ensuring that only data meeting the precision requirements is transmitted, thus maintaining measurement precision while accommodating different manufacturer technologies.
2Device complexity
If V2X communication systems are not fully realized, then device complexity is reduced, but loss of information and reliability of safety message reception worsen
Solution Approach 1:
The infrastructure control device serves as a central intermediary that collects, validates, and redistributes safety messages to all vehicles in the area. This approach reduces the complexity of peer-to-peer communication between vehicles while ensuring that all vehicles receive complete and accurate safety information, eliminating information loss without requiring full V2X implementation at the vehicle level.
Solution Approach 2:
The infrastructure control device performs multiple functions including receiving data from vehicles, validating dynamic characteristics, generating safety messages, and broadcasting to all vehicles. This multi-functional approach consolidates complex V2X communication tasks into a single centralized system, reducing overall device complexity while maintaining complete information distribution.
3Ease of operation
If dynamic characteristics are estimated rather than directly measured, then ease of operation and adaptability improve, but measurement precision and reliability worsen
Solution Approach 1:
The infrastructure control device implements feedback validation by comparing estimated dynamic characteristics against predetermined criteria and consistency checks. The system provides feedback to vehicles about data quality and requests corrections when estimates fall outside acceptable ranges, thus maintaining ease of data collection while improving reliability through iterative validation.
Solution Approach 2:
The system establishes predetermined parameter thresholds and validation rules for estimated dynamic characteristics. By changing the approach from direct measurement to parameter-based validation, the system accepts estimated data while ensuring reliability through structured parameter checking and consistency validation against established criteria.
Data Source
AI summary
An infrastructure edge device is configured to generate and broadcast a proxy safety message regarding a moving object. A method for a subject vehicle to process the proxy safety message includes determining whether data provided in the proxy safety message is valid based on sensor data from one or more sensors disposed about the subject vehicle, content of the proxy safety message, or a combination thereof. The method further discards the proxy safety message in response to the proxy safety message including invalid data.