Vehicle Message Processing Device Priority-Based Security Checking
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Solution Overview
Problem
Message processing devices in vehicles face high computational demands and storage requirements due to the large volume of wireless short messages (WSM) received from other vehicles and infrastructure sensors, particularly in verifying digital signatures for security checking.
Innovation Solution
A method and device that determine a characteristic variable for message priority based on content, authentication elements, and contextual factors, allowing for optimized processing sequences and resource allocation, prioritizing security checks for messages related to imminent hazards, known transmitters, and geographic relevance, and reducing processing for less critical messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security checking is performed on all incoming messages, then reliability of message processing is improved, but computing power consumption increases
Solution Approach 1:
The patent applies preliminary action by determining the characteristic variable of priority for security checking before actually performing the security checking. The message content is analyzed in advance to assign priority levels, and only high-priority messages undergo full security checking, while lower-priority messages are processed differently. This pre-classification approach ensures that computational resources are allocated efficiently based on message importance.
Solution Approach 2:
The patent implements local quality by applying different security checking strategies to different messages based on their priority levels. High-priority messages receive comprehensive security checking, while low-priority messages receive reduced or deferred checking. This differentiated approach allows the system to maintain high security for critical messages while reducing overall computational burden.
2Reliability
If all incoming messages are processed sequentially, then processing completeness is improved, but processing time increases
Solution Approach 1:
The system performs preliminary classification of messages into priority levels before sequential processing. By determining the characteristic variable of priority in advance based on message content, the system can then process messages in an optimized sequence, handling high-priority messages first and low-priority messages later or differently, thus reducing overall processing time while maintaining completeness.
Solution Approach 2:
The patent introduces dynamic processing by adjusting the processing sequence based on message priority levels. Instead of a fixed sequential processing order, the system dynamically reorders message processing based on the characteristic variable of priority, allowing high-priority messages to be handled immediately while lower-priority messages are deferred, thereby optimizing processing time.
3Reliability
If comprehensive security checking is performed on all messages, then message authentication reliability is improved, but storage capacity requirements increase
Solution Approach 1:
The system performs preliminary priority determination before storing and processing messages. By classifying messages into priority levels in advance based on content analysis, the system can store only necessary message data and authentication elements for high-priority messages, reducing the amount of data that needs to be retained in storage while maintaining authentication reliability for critical messages.
Solution Approach 2:
The patent applies local quality by storing and processing authentication elements selectively based on message priority. High-priority messages have their authentication elements stored and verified comprehensively, while low-priority messages may have reduced storage retention or alternative verification methods, thereby reducing overall storage capacity requirements while maintaining security for important messages.
Data Source
AI summary
A message processing device for processing messages has at least one reception buffer, a message includes at least one authentication element and one message content. The message is received and stored in the reception buffer. A characteristic variable of a priority for security checking of the message is determined as a function of the message content. A processing sequence for further message processing for the security checking, taking into account the at least one authentication element of the messages in the reception buffer is defined and carried out as a function of the characteristic variable.