Autonomous Driving Map Update Control Under Communication Load

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Solution Overview

Problem

Current communication systems face high communication loads when continuously transmitting sensor information from vehicles to update map information for autonomous driving, particularly in dynamic environments, without effectively managing the transmission of surrounding area information.

Innovation Solution

A server device and terminal device system that selectively transmits state information based on autonomous driving conditions, preventing unnecessary data transmission by requesting state information only when autonomous driving is possible, thereby reducing communication load.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sensor information is constantly transmitted to update map information, then map information can be updated frequently, but communication load becomes enormous

Engineering Contradiction:

Improvemap information update frequencyVSAvoidcommunication load

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent applies partial action by selectively transmitting sensor information only when autonomous driving is impossible, rather than constantly transmitting all sensor data. The server determines whether transmission is necessary based on the autonomous driving possibility flag, sending information only in partial cases where map updates are actually needed, thus reducing communication load while maintaining map information freshness.

Inventive Principle:

Principle #16Partial or excessive action

2Loss of information

If request for state information is transmitted to all movable bodies, then complete data can be collected, but unnecessary data transmission occurs when autonomous driving is possible

Engineering Contradiction:

Improvecompleteness of map dataVSAvoiddata transmission volume

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The server performs partial action by transmitting requests only to movable bodies where autonomous driving is determined to be impossible. The server checks the autonomous driving possibility flag and selectively sends requests only in cases where map information update is actually needed, avoiding unnecessary data transmission while ensuring complete map data is collected where required.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system uses feedback through the autonomous driving possibility flag to control information transmission. The server receives feedback about whether autonomous driving is possible from each movable body, and based on this feedback, dynamically decides whether to request state information, creating a closed-loop control mechanism that optimizes communication efficiency.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11402836B2Server device, terminal device, communication system, information reception method, information transmission method, information reception program, information transmission program, recording medium, and data structure

Publication Date: 2022.08.02 PIONEER IP

AI summary

A server device efficiently acquires information of a surrounding area of a movable body for updating map information while suppressing communication load. Condition information indicating a condition of autonomous driving is received from a first movable body capable of autonomous driving based on a state of a surrounding area of the first movable body and a map, and a request for state information is transmitted to a second movable body capable of transmitting the state information indicating a state of a place where the first movable body has moved, and when the received condition information indicates that the autonomous driving has been possible, transmission of the request is prevented.