Vehicle-to-Vehicle Communication Delay and Applicability
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Solution Overview
Problem
Conventional vehicle-to-vehicle communication systems do not consider the varying requirements of application programs for low transmission delay and high image quality, leading to moving image information not being applicable to all programs.
Innovation Solution
A vehicle-to-vehicle communication apparatus and system that determine the delay time and image quality of transmitted moving image information and use this data to determine its applicability to specific application programs, ensuring it is only applied to those that can productively use it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If moving image information is transmitted from one vehicle to another via vehicle-to-vehicle communication, then the image quality and transmission delay requirements vary depending on the application program, but conventional systems do not determine applicability leading to ineffective use of transmitted data
Solution Approach 1:
The patent applies preliminary action by determining the delay time of moving image information transmission in advance before the information is used by application programs. The system calculates transmission delay time based on communication distance and vehicle speed, and stores this information for subsequent applicability determination, allowing application programs to selectively use appropriate image data based on their specific requirements.
2Loss of time
If moving image information is transmitted with delay, then transmission time increases, but application programs requiring real-time data cannot effectively use the information
Solution Approach 1:
The patent implements feedback by having application programs provide their delay time requirements to the determination unit, which then compares these requirements with the actual transmission delay time. This feedback mechanism allows the system to selectively apply moving image information only to programs that can tolerate the observed delay, ensuring reliable operation of real-time applications while still enabling non-real-time applications to utilize the transmitted data.
3Adaptability or versatility
If moving image information is transmitted to all application programs, then versatility is improved, but many programs cannot productively use the information due to mismatched requirements
Solution Approach 1:
The patent applies local quality by making the applicability determination specific to each application program's requirements. Instead of uniformly transmitting moving image information to all programs, the system evaluates each program's delay tolerance and other specific needs, then selectively applies the information only to programs for which it is appropriate, ensuring that each program receives data with the right characteristics for its specific function.
Data Source
AI summary
In a vehicle-to-vehicle communication system, when moving image information is transmitted between vehicles, a delay time acquisition unit determines a delay time that occurs when the moving image information is transmitted from a first vehicle to a second vehicle, and an applicability determination unit determines whether the moving image information transmitted with such a delay time is applicable to an application program running on an in-vehicle apparatus installed in the second vehicle. This makes it possible to transmit only moving image information which is usable by the in-vehicle apparatus.