Vehicle Data Usability Control for Mixed Real-Time Driving
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Solution Overview
Problem
Existing systems waste data by ensuring real-time delivery, failing to effectively utilize data with mixed real-time needs in cooperative driving scenarios.
Innovation Solution
A vehicle-mounted apparatus determines real-time requirements, calculates elapsed and estimation periods, and assesses data usability based on these factors, converting or discarding data as necessary to optimize data use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If real-time delivery is ensured for all data, then data freshness is improved, but data waste increases due to discarding potentially usable non-real-time data
Solution Approach 1:
The patent changes the parameter of time evaluation by introducing a dual-period assessment mechanism: calculating both the elapsed period (how long data has been in transit) and the estimation period (how long until data is needed). This allows the system to dynamically adjust the real-time requirement threshold, converting a binary real-time/non-real-time classification into a continuous evaluation spectrum, thereby reducing unnecessary data discarding while maintaining data freshness where critical.
2Productivity
If all received data is processed, then data utilization is improved, but processing efficiency decreases due to handling unusable data
Solution Approach 1:
The patent applies preliminary action by performing usability assessment before full data processing. The control unit calculates the elapsed period and estimation period upfront, determines whether the received data meets real-time requirements, and only then proceeds to process and output the data. This preliminary filtering mechanism prevents wasteful processing of unusable data while ensuring that all potentially usable data is properly handled, thus improving both data utilization and processing efficiency.
Data Source
AI summary
A vehicle-mounted apparatus that includes a processor configured to: determine a real-time requirement relating to received data that has been received from outside the vehicle; calculate an elapsed period that is a time from generation of original data for the received data until the received data is received by the vehicle-mounted apparatus; calculate an estimation period from reception of the received data until usage of the received data commences; and determine whether the received data is usable based on the real-time requirement, the elapsed period, and the estimation period, wherein: the real-time requirement indicates a tolerated delay from generation of the original data to the usage of the received data, the received data has been appended with time information for specifying a time when the original data was generated, and the processor calculates the elapsed period based on a reception time of the received data and the time information.