Vehicle-to-x Message Processing Module for Data Traffic Reduction
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Solution Overview
Problem
The verification-on-demand approach for vehicle-to-x communication faces challenges in distributed designs due to a lack of security solutions in control units, leading to inefficiencies in computing power usage and message verification processes.
Innovation Solution
A method that involves receiving and buffering vehicle-to-x messages in a processing module, where only necessary messages are verified, with the option to preprocess and prioritize them, and utilize low system load phases for verification, reducing data traffic and computing power by sending only identifiers and verification results to the control module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all incoming vehicle-to-x messages are verified using cryptographic checksums, then security against manipulation is ensured, but computing power requirements become excessively high
Solution Approach 1:
The patent implements verification-on-demand where only selected messages are verified cryptographically instead of all messages. The control module determines which messages require verification based on their importance for applications, performing cryptographic checks only when necessary rather than universally
Solution Approach 2:
The processing module acts as an intermediary between the transceiver and control modules. It buffers incoming messages, receives verification requests from control modules, performs the cryptographic verification using the security unit, and returns results, thereby separating the security verification function from application control
2Adaptability or versatility
If a distributed design is used with existing control units, then integration ease is improved, but security solution availability deteriorates
Solution Approach 1:
The system is segmented into distinct functional modules: a transceiver for message reception, a processing module with buffer memory for message management, control modules for application logic, and a security unit for cryptographic operations. This segmentation allows existing control units to be integrated while security functions are handled by the dedicated processing module
Solution Approach 2:
The processing module serves multiple functions: it buffers incoming messages, manages message queues, receives verification requests from multiple control modules, performs cryptographic verification, and returns results. This multi-functionality allows a single module to support multiple control units without requiring each to have dedicated security capabilities
3Use of energy by moving object
If verification-on-demand is implemented in a distributed design, then computing power usage is reduced, but message verification efficiency deteriorates
Solution Approach 1:
The processing module pre-buffers incoming messages before control modules need them. When a control module requests verification, the message is already available in the buffer, eliminating the need to request the original message from the transceiver and reducing verification latency
Solution Approach 2:
The system implements a feedback mechanism where control modules provide verification requests to the processing module based on their assessment of message importance. The processing module uses this feedback to prioritize verification tasks and manage the verification queue efficiently
Data Source
AI summary
A method for processing vehicle-to-x messages in a processing module and a method for processing vehicle-to-x messages in a control module. In this way, the data traffic between processing module and control module can be considerably reduced.