Vehicle Communication Management System for Data Availability
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Solution Overview
Problem
Existing vehicle communication management systems face challenges in ensuring continuous driver assistance or automated driving when traveling through areas with poor communication states, such as tunnels or wide areas with unsatisfactory electromagnetic waves.
Innovation Solution
A vehicle communication management system that includes a communicator, a vehicle position identifier, and a manager. The manager calculates the necessary amount of download data and accumulates downloadable data based on route data and communication states, triggering the communicator to start downloading data when the accumulated data exceeds the necessary amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If map data is downloaded from a server in response to demand, then data volume can be managed efficiently, but the vehicle may not receive necessary map data at appropriate locations in areas with poor communication states
Solution Approach 1:
The system predicts communication state deterioration in advance and initiates data download before the vehicle enters the poor communication area. The manager calculates the necessary download amount based on predicted communication state and vehicle route, then triggers the communicator to download map data proactively, ensuring data is available even when communication becomes unavailable.
2Reliability
If data download is initiated early to ensure availability in poor communication areas, then data reception reliability improves, but the device complexity increases due to prediction and calculation mechanisms
Solution Approach 1:
The manager component integrates multiple functions including communication state prediction, route calculation, download amount determination, and download timing control into a single system element. This multi-functional approach ensures reliable data reception while avoiding the need for separate complex prediction algorithms, route planning modules, and download management systems.
3Reliability
If the system continuously monitors and calculates download requirements, then data availability is ensured, but energy consumption increases
Solution Approach 1:
The system performs communication state prediction and download amount calculation periodically rather than continuously. The manager evaluates communication conditions at specific intervals along the predicted route and initiates downloads only when necessary, reducing computational load and energy consumption while maintaining data availability.
Data Source
AI summary
A vehicle communication management system includes a communicator, a vehicle position identifier, a storage, a first data amount calculator, and a second data amount calculator. The communicator communicates with the outside of a first vehicle to which the vehicle communication management system is to be applied. The first data amount calculator calculates an amount of download data necessary for the first vehicle. The second data amount calculator accumulates the amounts of the downloadable data until the first vehicle reaches a point where the communication state deteriorates. The communicator starts downloading the download data necessary for the first vehicle, at a point where a sum total of the amounts of the downloadable data accumulated by the second data amount calculator becomes larger than the amount of the download data calculated by the first data amount calculator as being necessary for the first vehicle.