On-Vehicle Device Predicts Line Speed for V2X Transmission

Solution Overview

Problem

In a cellular V2X system with 5G and LTE communication lines, frequent switching between lines occurs, leading to unpredictable line speeds, which limits data transmission from vehicles to servers, especially when vehicles move out of 5G coverage areas, and existing technologies fail to address these changes effectively.

Innovation Solution

An on-vehicle device that collects sensor information, predicts line speed changes by receiving data on expected communication line speeds, and adjusts transmission parameters accordingly, ensuring efficient and uninterrupted data transmission to servers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the vehicle switches between 5G and LTE communication lines, then the communication coverage is improved, but the line speed becomes unpredictable and transmission efficiency deteriorates

Engineering Contradiction:

Improvecommunication coverage areaVSAvoidline speed stability

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The system performs preliminary actions by predicting future line speeds before actual transmission occurs. The prediction unit forecasts line speeds at expected future positions, and the control unit pre-adjusts transmission parameters based on these predictions, ensuring smooth transitions during communication line switching without waiting for actual speed changes to occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements dynamic adaptation by continuously adjusting transmission parameters based on predicted line speeds. The control unit modifies transmission power, data rates, and other parameters in real-time according to the predicted communication conditions at future vehicle positions, making the transmission system flexible and adaptive to changing network environments.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the transmission parameters are adjusted based on current line speed, then the immediate transmission efficiency is improved, but the future transmission performance deteriorates due to unpredictable line speed changes

Engineering Contradiction:

Improvecurrent transmission efficiencyVSAvoidfuture transmission delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by predicting future line speeds before actual transmission occurs. The prediction unit forecasts line speeds at expected future positions, and the control unit pre-adjusts transmission parameters based on these predictions, ensuring smooth transitions during communication line switching without waiting for actual speed changes to occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements dynamic adaptation by continuously adjusting transmission parameters based on predicted line speeds. The control unit modifies transmission power, data rates, and other parameters in real-time according to the predicted communication conditions at future vehicle positions, making the transmission system flexible and adaptive to changing network environments.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If the vehicle moves out of 5G coverage area, then the adaptability to different communication environments is improved, but the line speed drops and transmission reliability deteriorates

Engineering Contradiction:

Improvecommunication environment adaptabilityVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary actions by predicting future line speeds before actual transmission occurs. The prediction unit forecasts line speeds at expected future positions, and the control unit pre-adjusts transmission parameters based on these predictions, ensuring smooth transitions during communication line switching without waiting for actual speed changes to occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements dynamic adaptation by continuously adjusting transmission parameters based on predicted line speeds. The control unit modifies transmission power, data rates, and other parameters in real-time according to the predicted communication conditions at future vehicle positions, making the transmission system flexible and adaptive to changing network environments.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11941975B2Driving assistance system, onboard device, method, and computer program

Publication Date: 2024.03.26 SUMITOMO ELECTRIC INDUSTRIES LTD

AI summary

The system includes a server and an on-vehicle device of a vehicle. The on-vehicle device includes a collecting unit for collecting sensor information detected by a sensor on the vehicle, a transmission unit for transmitting the sensor information collected by the collecting unit, to the server via a communication line, a reception unit for receiving data including a line speed of the communication line in an expected traveling area of the vehicle, from outside of the vehicle, a line management unit for determining, as a predicted line speed, the line speed of the communication line at an expected traveling position of the vehicle in a future, on the basis of the data received by the reception unit, and a control unit for determining a parameter relevant to transmission of the sensor information collected by the collecting unit to the server, on the basis of the predicted line speed.