In-Vehicle Relay Authentication with Parallel Network Setup
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Solution Overview
Problem
Existing in-vehicle relay devices do not consider starting communication through the in-vehicle network until authentication with the in-vehicle device is completed, leading to delayed network setup.
Innovation Solution
An in-vehicle relay device that relays authentication communication data in parallel with transmitting and receiving setting data, allowing it to acquire network setting information before authentication is complete, and initiates communication based on this information after authentication is finished.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay device waits for authentication to complete before starting communication, then authentication security is ensured, but network setup time increases
Solution Approach 1:
The relay device performs preliminary actions by acquiring network setting information and preparing communication parameters during the authentication process itself, rather than waiting for authentication to complete. This allows the system to have communication-ready settings prepared in advance, reducing the delay between authentication completion and actual communication start.
Solution Approach 2:
The authentication communication data relay process and the network setting information acquisition process are executed in parallel continuously, rather than sequentially. This continuous parallel operation ensures that both authentication and network setup proceed simultaneously, maximizing resource utilization and minimizing total setup time while maintaining security.
2Loss of time
If authentication communication data is relayed in parallel with setting data, then network setup time is reduced, but communication protocol complexity increases
Solution Approach 1:
The communication data is segmented into distinct types: authentication communication data and network setting data. Each segment is handled through dedicated processing paths within the relay device, allowing parallel operation while maintaining clear separation of concerns. This segmentation reduces protocol complexity by organizing the parallel processes into manageable, distinct data streams with specific handling rules.
Solution Approach 2:
The relay device acts as an intermediary that manages the parallel communication streams. It mediates between the authentication process and network setup process, coordinating the parallel data relay and setting acquisition while ensuring proper timing and sequencing. This intermediary role simplifies the overall system architecture by centralizing the complexity management within the relay device rather than requiring complex coordination between multiple components.
Data Source
AI summary
An in-vehicle relay device to be connected to a plurality of in-vehicle devices mounted on a vehicle and an authentication device performing authentication of the in-vehicle device, to relay communication between the plurality of in-vehicle devices, the device including a control unit controlling the relay of the communication, in which the control unit relays authentication communication data for the authentication between the in-vehicle device and the authentication device before the authentication of the in-vehicle device connected to the in-vehicle relay device is completed, transmits and receives setting data for setting an in-vehicle network with the authentication device and the in-vehicle device, in parallel with the relay of the authentication communication data, acquires setting information of the in-vehicle network according to the transmitted setting data, from the authentication device, and starts relay based on the acquired setting information after the authentication is completed.