Vehicle-to-X Communication Device Boot Time Optimization
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Solution Overview
Problem
Current vehicle-to-X communication devices are unable to meet the requirement of sending messages within 2 seconds of vehicle startup due to the time-consuming boot process of the microcontroller's operating system, which is necessary for compliance with existing standards.
Innovation Solution
A vehicle-to-X communication device is designed with two processing units: a first unit for receiving messages and a second, less resource-intensive unit for sending messages, allowing for immediate message transmission during the startup sequence by utilizing a separate, faster booting processing unit for sending protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single microcontroller is used to handle both receiving and sending vehicle-to-X messages, then device complexity is reduced and cost is lowered, but the boot time becomes too long to meet the 2-second readiness requirement
Solution Approach 1:
The patent divides the processing unit into two separate processing units: a first processing unit for receiving vehicle-to-X messages and a second processing unit for sending vehicle-to-X messages. This segmentation allows the second processing unit to have a shorter boot time specifically optimized for sending messages, while the first processing unit handles the more resource-intensive receiving operations. The separation resolves the contradiction by dedicating specific functions to specific units rather than requiring a single unit to handle all functions.
Solution Approach 2:
The patent extracts the sending function from the main receiving processing unit and places it in a separate second processing unit. This extraction allows the sending-specific processing unit to have minimal boot time requirements, as it only needs to handle outgoing messages rather than the full spectrum of vehicle-to-X communication tasks. The sending capability is taken out as an independent functional unit with optimized startup characteristics.
2Power
If a powerful operating system is used to facilitate extensive computational resources for processing received messages, then processing capability is improved, but boot process time increases
Solution Approach 1:
The patent segments the computational tasks by assigning different processing units to different message handling functions. The first processing unit is equipped with a powerful operating system and computational resources for handling the resource-intensive receiving and processing of incoming messages. The second processing unit has minimal computational requirements optimized for sending messages, allowing for faster boot time. This segmentation resolves the contradiction by matching computational power to specific functional requirements rather than requiring all functions to share the same high-power platform.
Solution Approach 2:
The patent applies local quality by giving different processing units different levels of computational power and resource allocation based on their specific functional needs. The receiving unit gets high computational power and a full operating system, while the sending unit gets minimal resources optimized for speed. This localized optimization allows each unit to be perfectly suited to its task without the overhead that would slow down the other function.
Data Source
AI summary
A vehicle-to-X communication device, including a first processing unit for the processing of received vehicle-to-X messages and a second processing unit, wherein the vehicle-to-X communication device is configured to send vehicle-to-X messages during a starting sequence of the first processing unit by the second processing unit. Furthermore, the invention refers to the use of the vehicle-to-X communication device in a vehicle.