In-Vehicle Server Fallback for Driving Support Continuity
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Solution Overview
Problem
Existing in-vehicle systems face challenges when connection with external servers is suspended, as they do not efficiently utilize cloud services and struggle to adapt to new services, leading to insufficient service realization due to limited information processing resources.
Innovation Solution
An in-vehicle device with an in-vehicle server capable of executing sub-functions of external servers, a function selection unit that prioritizes sub-functions based on traffic environments, and a vehicle inside-outside collaboration device to provide subset information, ensuring flexible operation even when external server connection is suspended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle relies on external servers for driving support functions, then the driving support device can provide comprehensive services, but the system becomes useless when communication with the server is suspended
Solution Approach 1:
The in-vehicle device is equipped with an in-vehicle server that can independently execute sub-functions of external servers. When communication with external servers is suspended, the in-vehicle server activates and provides driving support functions using locally stored data and algorithms, enabling the system to serve itself without external assistance.
Solution Approach 2:
The in-vehicle server is pre-configured with sub-functions and data necessary for driving support operations. These functions are prepared in advance and can be immediately activated when external server communication fails, ensuring continuous service availability without waiting for external assistance.
2Reliability
If the in-vehicle server executes all sub-functions, then service continuity is maintained during communication suspension, but information processing resources are insufficient
Solution Approach 1:
The server functions are divided into main functions executed by external servers and sub-functions executed by the in-vehicle server. This segmentation allows the in-vehicle server to handle only essential driving support tasks during communication suspension, reducing the burden on information processing resources while maintaining service continuity.
Solution Approach 2:
The in-vehicle server executes only the necessary sub-functions required for basic driving support during communication suspension, rather than all possible functions. This partial action approach ensures that limited information processing resources are sufficient to maintain critical services.
3Adaptability or versatility
If the in-vehicle server executes multiple sub-functions simultaneously, then comprehensive driving support is provided, but available information processing resources are exceeded
Solution Approach 1:
The in-vehicle server dynamically selects and executes sub-functions based on the current traffic environment and available information processing resources. The function selection unit adjusts which sub-functions to execute according to real-time conditions, ensuring that the system adapts to changing resource availability while providing comprehensive driving support when resources permit.
Solution Approach 2:
The system changes the execution parameters of sub-functions based on available resources. When information processing resources are sufficient, more sub-functions are executed with higher priority. When resources are constrained, the system adjusts execution priorities and selects only the most critical sub-functions, maintaining productivity while providing essential driving support.
Data Source
AI summary
This in-vehicle device includes: an in-vehicle server capable of executing one or a plurality of sub-functions forming a subset of a function of an external server, the in-vehicle server being configured to use data received from outside and output subset information capable of replacing a part of the information; a function selection unit configured to select, in response to a fact that reception of the information from the external server has been suspended, at least one of the sub-functions executed by the in-vehicle server, in accordance with a priority based on a traffic environment; a reception determination unit configured to determine that the reception of the information from the external server has been suspended; and a vehicle inside-outside collaboration device configured to provide, in accordance with determination by the reception determination unit that the reception has been suspended, the subset information from the in-vehicle server to the driving support device.