Ethernet Vehicle Network Data Message Encoding for IT Service Support
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Solution Overview
Problem
Existing vehicle networks, such as CAN and FlexRay-based networks, fail to support the higher transmission rates and system expandability required by emerging IT services like navigation and streaming services, and implementing MOST-based networks is costly.
Innovation Solution
An Ethernet-based vehicle network method that generates and transmits data messages with indicators for data type and encoding schemes, allowing for efficient transmission and reception of text and image data, including a processor and memory to manage these messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If MOST-based network is applied to vehicle networks, then transmission rate is improved (up to 150 Mbps), but cost increases
Solution Approach 1:
The patent changes the network protocol parameter from MOST to Ethernet, achieving high transmission rates (up to 10 Gbps) while reducing cost. Ethernet infrastructure is more widely available and cost-effective compared to MOST, while still meeting the high-speed requirements of new IT services
2Ease of manufacture
If CAN or FlexRay-based network is used, then cost is reduced, but transmission rate and system expandability are insufficient for new IT services
Solution Approach 1:
The patent changes the network protocol parameter from CAN/FlexRay to Ethernet, achieving high transmission rates (up to 10 Gbps) and improved system expandability while maintaining cost-effectiveness. Ethernet provides both the required performance and affordability
3Device complexity
If existing vehicle network is used, then device complexity is reduced, but adaptability to new IT services deteriorates
Solution Approach 1:
The patent implements a universal Ethernet-based network that can support both traditional vehicle communication requirements and new IT services simultaneously. Ethernet's versatility allows it to handle various data types (text, image, video, audio) and protocols, making the network adaptable to diverse applications without increasing complexity
Data Source
AI summary
An operation method of a first communication node in an Ethernet-based vehicle network includes: generating a data message including data when there is data to be transmitted to a second communication node belonging to the Ethernet-based vehicle network; and transmitting the data message to the second communication node. The data message further includes a first indicator indicating a type of the data and a second indicator indicating an encoding scheme applied to the data, such that a vehicle network even in an existing vehicle can support transmission and reception of information for the new IT service, and the performance of the vehicle network can be improved.