Map Update Request Control for Autonomous Driving Communication Load

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Solution Overview

Problem

Existing systems face significant communication load issues when vehicles constantly transmit sensor information to update map information for autonomous driving, which is not addressed by existing technologies.

Innovation Solution

A server device that receives condition information from movable bodies and selectively requests state information only when autonomous driving is possible, preventing unnecessary transmission and optimizing communication load.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sensor information is constantly transmitted to update map information, then map information can be kept up-to-date, but communication load becomes enormous

Engineering Contradiction:

Improvemap information currencyVSAvoidcommunication load

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system transmits only a subset of sensor information (specifically, information indicating whether autonomous driving is possible) rather than all sensor data. This partial transmission approach maintains map information currency while significantly reducing communication load, as the server can determine map updates are needed only when autonomous driving capability is affected

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system performs preliminary filtering of sensor information at the terminal device before transmission. By pre-processing sensor data to extract only the essential autonomous driving possibility indicator, the system avoids transmitting redundant information, thereby reducing communication load while ensuring map information can be updated when necessary

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3594922B1Server device, terminal device, communication system, information receiving method, information sending method, program for receiving information, program for sending information, recording medium, and data structure

Publication Date: 2025.12.03 PIONEER IP

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Figure 3A~3B

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.