Interface Device Recognition Message Handling for SDN User Integration
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Solution Overview
Problem
Existing network technologies, such as Software Defined Networking (SDN), face challenges in efficiently integrating new users into vehicle networks without causing network overload, particularly due to redundant message forwarding, which is critical in time- and safety-sensitive automotive environments.
Innovation Solution
A method that involves a central software-based controller logically separating the data plane from the control plane, using recognition messages to check for previous message receipt times, and employing a broadcast message with no addressing to integrate new users, thereby reducing redundant forwardings and maintaining network operability, specifically operating at the OSI model's second layer to minimize software complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If broadcast messages are used to integrate new users in SDN network, then new users can be efficiently integrated, but network overload occurs due to redundant message forwarding
Solution Approach 1:
The patent applies preliminary action by recording the reception time of recognition messages before forwarding them. When a recognition message is received, the interface device checks whether a previous message was received within a predefined time period by comparing timestamps. This pre-check mechanism prevents redundant forwardings before they occur, thereby maintaining user integration efficiency while avoiding network overload from duplicate messages
2Adaptability or versatility
If recognition messages are forwarded to all network users, then new users are integrated into the network, but software complexity increases due to addressing requirements
Solution Approach 1:
The patent applies homogeneity by using uniform broadcast messages without individual addressing for all recognition messages. Instead of creating complex addressing logic for different user types or scenarios, the system uses a standardized approach where all recognition messages are handled identically through timestamp comparison. This reduces software complexity while maintaining the ability to integrate any new user into the network
Data Source
AI summary
A method for integrating interface devices into a network, the network including at least one central software-based controller, which logically separates a data plane from a control plane using multiple interface devices. The method includes: a receiving of a first recognition message of the central controller at a terminal of an interface device; a checking of whether a previous recognition message has been received at another terminal of the interface device within a predefined time period prior to the receipt of the first recognition message; and a forwarding of the first recognition message to all network users connected to the interface device, if no previous recognition message has been received at another terminal within the predefined time period.