Vehicle-Mounted Apparatus Selective Wireless Connection Based on Roadside Position

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Solution Overview

Problem

Existing communication systems for vehicles face challenges in connecting with appropriate roadside access points, leading to unnecessary wireless connections and network congestion, which can result in reduced communication rates and ineffective information transfer.

Innovation Solution

A communication system that acquires position and detection range information from roadside devices and selectively performs wireless connections based on relevance to the vehicle's planned route, allowing for efficient connection with appropriate access points and reducing network load.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If the vehicle connects with all roadside access points to ensure comprehensive information reception, then the information completeness is improved, but the network congestion increases and communication rate decreases

Engineering Contradiction:

Improveinformation completenessVSAvoidcommunication rate

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The system performs preliminary actions by acquiring position information of roadside devices and the vehicle's planned route before making connection decisions. This allows the vehicle to pre-identify relevant roadside devices along its route and establish connections proactively, avoiding the need to connect to all access points while ensuring comprehensive information reception from relevant sources.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the vehicle selectively connects only to relevant roadside devices based on position information, then the network load is reduced, but the risk of missing relevant information increases

Engineering Contradiction:

Improvenetwork efficiencyVSAvoidinformation completeness

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the vehicle's position, planned route, and received information to dynamically adjust connection decisions. By incorporating feedback from position updates and route changes, the system ensures that it maintains connections with relevant roadside devices while avoiding unnecessary connections, thus balancing network efficiency with information completeness.

Inventive Principle:

Principle #23Feedback

3Reliability

If the vehicle performs authentication and connection procedures with multiple access points, then the reliability of information reception is improved, but the time consumption and processing load increase

Engineering Contradiction:

Improveconnection reliabilityVSAvoidconnection establishment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by acquiring position information of roadside devices and the vehicle's planned route before making connection decisions. This allows the vehicle to pre-identify relevant roadside devices along its route and establish connections proactively, reducing the number of authentication and connection procedures needed while maintaining reliable information reception from relevant sources.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3396648B1Communication system, vehicle-mounted apparatus, and recording medium recording program

Publication Date: 2023.10.04 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

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AI summary

A vehicle-mounted apparatus that is capable of wireless connection with a roadside device is provided. The roadside device is on, above, or below a road. The vehicle-mounted apparatus is on a vehicle and acquires position information broadcast from the roadside device by wireless communication. The position information is about a position of the roadside device. The vehicle-mounted apparatus decides whether individual wireless connection is performed between the roadside device and the vehicle-mounted apparatus based on roadside device information. The roadside device information includes the position information about the position of the roadside device. Connection or disconnection of individual wireless connection is performed between the vehicle-mounted apparatus and the roadside device based on the decision. Periphery information of the roadside device is acquired from the roadside device during the individual wireless connection in response to the individual wireless connection being connected.