Heterogeneous Vehicle Network Protocol Conversion Error Detection
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Solution Overview
Problem
Conventional communication protocol conversion apparatuses in vehicle networks fail to detect conversion errors between heterogeneous communication protocols, leading to potential vehicle malfunctions and unnecessary network bandwidth waste.
Innovation Solution
A communication protocol conversion apparatus that stores a copy of an input frame, converts it to a different protocol, inversely converts it back, and compares the original and converted frames to detect errors, issuing a notification if they do not match.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication protocol conversion is performed between heterogeneous networks without error detection, then conversion speed is maintained, but conversion errors occur leading to vehicle malfunctions and network bandwidth waste
Solution Approach 1:
The patent creates a copy of the original communication frame before conversion and uses this copy for verification. The copying mechanism allows the system to compare the original frame with the converted-and-reconverted frame without affecting the main conversion flow, thereby detecting errors while maintaining system efficiency.
Solution Approach 2:
The patent performs preliminary error detection by reconverting the converted frame back to the original protocol and comparing it with the copied original frame. This preliminary verification step identifies conversion errors before they propagate through the network, preventing vehicle malfunctions and bandwidth waste.
2Reliability
If error detection mechanisms are added to protocol conversion apparatus, then conversion errors are detected preventing malfunctions, but device complexity and processing time increase
Solution Approach 1:
By working on a copy of the original frame rather than the original itself, the verification process can proceed in parallel or without blocking the main conversion path. This copying approach minimizes the time impact of error detection while ensuring frame conversion reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the converted frame is reconverted and compared with the original copy. This feedback loop provides automatic error detection and notification, ensuring reliable conversion while keeping the processing time impact minimal through efficient comparison operations.
3Reliability
If all converted frames are verified through inverse conversion, then conversion errors are prevented from transmitting, but network bandwidth is consumed by verification traffic
Solution Approach 1:
The verification process operates on local copies of frames rather than transmitting verification traffic across the network. This approach prevents error frames from being transmitted while consuming minimal network bandwidth, as the comparison is performed locally at the gateway device.
Solution Approach 2:
The protocol conversion apparatus performs self-verification by reconverting its own output and comparing it with the stored copy. This self-service mechanism ensures error prevention without requiring additional network resources or external verification systems, thereby conserving network bandwidth.
Data Source
AI summary
Disclosed are a communication protocol conversion method and apparatus for detecting communication protocol conversion errors between heterogeneous automobile communication networks. The communication protocol conversion method includes: storing a copy of a first communication network frame received, converting the received first communication network frame into a second communication network frame through a first conversion module, inversely converting the converted second communication network frame into a first communication network frame through a second conversion module, comparing the stored copy of the first communication network frame and the inversely converted first communication network frame, and detecting conversion errors between the first and second communication network frames according to a comparison result.