Vehicle Onboard Network Monitoring via Selective Log Transmission
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Solution Overview
Problem
Onboard systems in vehicles face challenges in monitoring data effectively due to insufficient processing capabilities, and external systems struggle with the large amount of data transmitted from onboard systems, making it difficult to maintain an appropriate monitoring level while processing the data efficiently.
Innovation Solution
An information processing device installed in vehicles that periodically transmits a sampling log with a smaller data amount and a full log with a larger data amount only when abnormalities are detected, allowing external servers to use abundant resources for analysis, thereby reducing the overall data transmission while maintaining monitoring quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external system monitors all communication data from the onboard system, then the monitoring level is improved, but the data transmission amount increases significantly
Solution Approach 1:
The patent extracts only the necessary monitoring function from the complete data stream. The onboard system transmits communication data to the external system, which then selectively extracts and analyzes only the portions containing abnormalities or security-relevant information, rather than processing all transmitted data.
Solution Approach 2:
The onboard system performs preliminary filtering by transmitting all communication data to the external system before detailed analysis. The external system then performs preliminary sorting and identification of abnormal patterns, extracting only those specific data portions that require further investigation, thereby reducing the overall processing burden.
2Reliability
If the onboard system processes and monitors all communication data, then the monitoring capability is improved, but the device complexity increases
Solution Approach 1:
The patent introduces an external system as an intermediary between the onboard communication network and the monitoring analysis function. This intermediary receives communication data from the onboard system, performs abnormality detection and filtering, and only transmits relevant abnormal data portions to the final analysis system, thereby simplifying the onboard system's processing requirements.
Solution Approach 2:
The monitoring function is segmented into multiple stages: data collection by the onboard system, preliminary filtering and abnormality detection by the external system, and detailed analysis of only the extracted abnormal portions. This segmentation allows each component to perform its specific function with appropriate complexity levels.
Data Source
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AI summary
An information processing device includes an obtaining unit that obtains, from an abnormality detecting unit, abnormality detection results of whether or not there is an abnormality included in communication data on an onboard network of a vehicle, and an output unit that outputs a sampling log transmission instruction, to cause periodic transmission of a sampling log from a transmission unit installed in the vehicle to a server device provided outside of the vehicle. The output unit further outputs a full log transmission instruction, to cause transmission of a full log from the transmission unit to the server device in a case of the obtaining unit having obtained the abnormality detection results indicating that an abnormality is included in the communication data.