Vehicular Communication Device Anomaly Detection
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Solution Overview
Problem
Existing vehicular communication systems face challenges in accurately determining anomalies in wide area communicators due to dynamic communication environments, such as those encountered in tunnels or near other vehicles with communication devices, which can degrade communication performance without indicating an actual fault in the wide area communicator.
Innovation Solution
A vehicular communication device that receives communication performance indices from surrounding vehicles, sets a reference value based on these indices, and uses this reference to accurately determine anomalies in targeted wide area communicators, distinguishing between performance degradation caused by anomalies and environmental influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If anomaly determination is based only on communication performance of the wide area communicator, then the determination process is simple, but the accuracy of anomaly determination deteriorates due to environmental factors like tunnels and periphery vehicles
Solution Approach 1:
The patent introduces periphery vehicles as intermediary elements to mediate the anomaly determination process. Instead of directly determining anomaly based solely on the wide area communicator's performance, the system uses communication performance indices from multiple periphery vehicles as reference data. This intermediary reference data helps distinguish between actual anomalies and environmental degradation, thereby improving determination accuracy without significantly increasing system complexity.
Solution Approach 2:
The system implements feedback by continuously collecting communication performance indices from periphery vehicles and using this feedback to improve anomaly determination. The reference value setup section accumulates performance data from multiple vehicles over time, creating a feedback loop that refines the anomaly detection process. This feedback mechanism enables the system to adapt to changing environmental conditions while maintaining simple operation.
2Adaptability or versatility
If the wide area communicator is used in dynamic vehicle environments, then the service coverage is expanded, but the communication performance degrades due to environmental factors like tunnels and interference from other vehicles
Solution Approach 1:
The patent applies parameter changes by monitoring communication performance indices from multiple periphery vehicles and comparing these parameters against established reference values. When the wide area communicator's performance parameters deviate significantly from the reference values derived from periphery vehicles, the system identifies this as an anomaly rather than environmental degradation. This parameter-based approach allows the system to maintain reliability in diverse environments while preserving the adaptability and expanded service coverage of wide area communication.
3Measurement precision
If reference values are set based on communication performance indexes from multiple periphery vehicles, then the anomaly determination accuracy is improved, but the information processing complexity increases
Solution Approach 1:
The patent applies universality by having periphery vehicles perform multiple functions: they not only provide wide area communication services but also serve as reference nodes for anomaly determination. Each periphery vehicle's communication performance index contributes to the collective reference data set. This multi-functional approach distributes the information gathering burden across multiple vehicles rather than requiring a complex centralized collection system, thereby improving accuracy while managing processing complexity through distributed participation.
Data Source
AI summary
A vehicular communication device is provided. The vehicular communication device includes a reception section that, from a periphery vehicle equipped with a wide area communicator, receives a communication performance index representing performance of the wide area communicator, and a controller. The controller includes a reference value setup section that successively settles a reference value as a criterion based on the communication performance indexes received from multiple periphery vehicles, an acquisition section that acquires the communication performance index for a targeted wide area communicator which is the wide area communicator targeted at anomaly determination, and an anomaly determination section that determines an anomaly of the targeted wide area communicator based on comparison between the reference value settled by the reference value setup section and the communication performance index acquired by the acquisition section for the targeted wide area communicator.