Dual Communication Processor Architecture for Vehicle Data Security
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Solution Overview
Problem
Vehicle computing systems face challenges in securely managing data communication between vehicle networks and remote servers, particularly in preventing unauthorized data transmission from unknown networks.
Innovation Solution
A dual communication processor configuration is implemented, where a first processor communicates with a remote secured network via a private cellular carrier virtual network, and a second processor handles communication with public servers and connected devices through an internet connection, with limited data exchange between the processors to ensure security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single communication processor is used to handle all data communication, then device complexity is reduced, but security against unauthorized data transmission from unknown networks deteriorates
Solution Approach 1:
The communication processor is divided into two separate processors: a first communication processor dedicated to vehicle network data and a second communication processor dedicated to infotainment data. This segmentation allows each processor to handle specific data types through dedicated interfaces, preventing unauthorized data transmission while maintaining manageable system complexity
Solution Approach 2:
A vehicle processor acts as an intermediary between the two communication processors and the vehicle network. It receives data from the first communication processor directly, while data from the second communication processor must pass through the vehicle processor which validates it through a predefined application program interface before allowing access to the vehicle network
2Reliability
If separate communication processors are used for different data types, then data security is improved, but device complexity increases
Solution Approach 1:
The vehicle processor serves multiple functions: it processes data from the first communication processor, validates data from the second communication processor through the predefined interface, and manages output to displays. This multi-functionality consolidates control logic and reduces overall system complexity despite having separate communication processors
3Ease of operation
If all data is transmitted through a single interface, then ease of operation is improved, but security against unauthorized networks deteriorates
Solution Approach 1:
The data transmission interface is segmented into two separate communication processors with dedicated interfaces. The first communication processor handles vehicle network data through one interface, while the second handles infotainment data through another interface, preventing unauthorized networks from accessing the vehicle network through a single unprotected interface
Solution Approach 2:
The vehicle processor acts as an intermediary that enforces security policies at the interface level. It validates data from the second communication processor through a predefined application program interface before allowing transmission to the vehicle network, blocking unauthorized data while maintaining ease of operation for legitimate data
Data Source
AI summary
A vehicle system has a first communication processor connected to a vehicle network, a second communication processor connected to the first communication processor, and a vehicle processor configured to communicate with the first and second communication processors. The vehicle processor is programmed to, in response to received vehicle data via the vehicle network, communicate the vehicle data to a server via the first communication processor. The vehicle processor is further programmed to, in response to received infotainment data via the second communication processor, output the infotainment data to a display.