Vehicle Security Isolation via Mobile Terminal Reporting
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Solution Overview
Problem
When a vehicle-mounted communication unit is hacked, isolating it from the vehicle system prevents the transmission of abnormality information to an external server, making it difficult to upload security incident data, thus potentially allowing the security incident to influence vehicle behavior and hinder information reporting.
Innovation Solution
A vehicle system comprising a monitoring unit and a control unit that disconnects communication between the vehicle-mounted communication unit and the monitoring unit upon detecting an abnormality, and instructs a mobile communication terminal to report the issue via short-range wireless communication, allowing incident information to be sent to an external server even when the vehicle-mounted communication unit is isolated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle-mounted communication unit is isolated from the vehicle system when a security incident is detected, then the security incident is prevented from influencing vehicle behavior, but the transmission of abnormality information to the external server is blocked
Solution Approach 1:
The patent introduces a mobile communication terminal as an intermediary device. When the vehicle-mounted communication unit is isolated due to a security incident, the control unit uses short-range wireless communication to instruct the mobile terminal to report the abnormality information to the external server, thus mediating the information transmission path bypassing the isolated communication unit
Solution Approach 2:
The patent segments the information transmission function into two independent paths: (1) the primary path through the vehicle-mounted communication unit for normal operations, and (2) a backup path through short-range wireless communication to mobile terminals for security incident reporting. This segmentation allows the system to maintain information transmission capability even when one path is compromised
2Reliability
If the vehicle-mounted communication unit is isolated from the vehicle system when a security incident is detected, then the security incident is prevented from influencing vehicle behavior, but the communication capability for reporting incidents is lost
Solution Approach 1:
The patent makes the control unit multi-functional by enabling it to perform both its original control functions and an additional function of initiating security incident reporting through short-range wireless communication. This allows the system to adapt to security incidents using existing hardware resources
Solution Approach 2:
The patent introduces dynamic communication capability where the control unit can switch between normal operation mode and security incident reporting mode. The short-range wireless communication function is dynamically activated only when needed for incident reporting, providing adaptive communication capability without permanently altering the system architecture
Data Source
AI summary
A vehicle includes a vehicle-mounted communication unit capable of wirelessly communicating telematics information to and from an external server, a monitoring unit that monitors whether an abnormality has occurred in the vehicle-mounted communication unit because of a security incident, and a control unit that controls a vehicle-mounted device. When detecting occurrence of an abnormality in the vehicle-mounted communication unit, the monitoring unit disconnects communication between the vehicle-mounted communication unit and the monitoring unit and notifies the control unit of the abnormality. The control unit can wirelessly communicate with a mobile communication terminal in accordance with a certain profile of a short-range wireless communication standard for a function of the vehicle-mounted device. The control unit instructs, when being notified of the abnormality, the mobile communication terminal to perform an operation in accordance with the certain profile so as to report the abnormality to the external server via the mobile communication terminal.