Gateway Conversion Message Generation for CAN to Ethernet Routing

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Solution Overview

Problem

The existing communication network systems face delays in data routing due to the need for additional algorithms to convert CAN messages into SOME/IP messages for Ethernet communication.

Innovation Solution

A communication network system that includes a CAN controller, a gateway that generates a conversion message based on preset conversion determination data, and an Ethernet controller, which eliminates the need for payload modification and reduces data routing delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If data conversion process is performed to convert CAN message to SOME/IP message, then Ethernet communication compatibility is improved, but data routing delay increases

Engineering Contradiction:

ImproveEthernet communication compatibilityVSAvoiddata routing delay

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The gateway stores conversion determination data (Service-ID, Method-ID, payload length) in advance in its memory, mapped to CAN message IDs. When a CAN message arrives, the gateway performs a simple table lookup based on the message ID to retrieve pre-configured conversion parameters, eliminating the need for real-time payload conversion algorithms and reducing routing delay while maintaining Ethernet compatibility

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If payload conversion algorithm is implemented, then protocol compatibility is improved, but processing complexity increases

Engineering Contradiction:

Improveprotocol compatibilityVSAvoidprocessing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Conversion parameters including Service-ID, Method-ID, and payload length are pre-configured and stored in the gateway's memory before operation. The gateway only needs to perform simple parameter retrieval and message header construction based on stored data, eliminating complex real-time payload conversion algorithms and reducing processing complexity

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The gateway copies the original CAN message payload directly into the SOME/IP message without modification. By using the same payload data for both CAN and SOME/IP protocols and only changing the message header format, the system achieves protocol compatibility while minimizing processing complexity

Inventive Principle:

Principle #26Copying

Data Source

PatentUS12237944B2Communication network system and method of operating same

Publication Date: 2025.02.25 HYUNDAI MOTOR CO LTD

AI summary

A communication network system and a method of operating the same are disclosed. The communication network system includes a controller area network (CAN) controller that generates a CAN message, a gateway that receives the CAN message and generates a conversion message for Ethernet communication based on that preset conversion determination data is included in the CAN message, and an Ethernet controller that receives the conversion message.