Onboard Network Management Device Dynamic Bandwidth Allocation

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Solution Overview

Problem

Existing techniques for managing onboard vehicle networks struggle to efficiently utilize limited bandwidth, particularly in scenarios where communication demand fluctuates due to changes in operational states of functional units or power supply states.

Innovation Solution

A management device and relay device system that acquires change information regarding the operational state and power supply state of functional units within the onboard network, and adjusts network settings accordingly to optimize bandwidth utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If network settings are fixed to ensure stable communication, then reliability is improved, but adaptability to changing operational states deteriorates

Engineering Contradiction:

Improvecommunication stabilityVSAvoidadaptability to operational state changes

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic network settings where the management device continuously monitors operational states of functional units and automatically adjusts network parameters (bandwidth allocation, communication priorities, routing) in real-time. This transforms the fixed network configuration into a dynamic system that adapts to changing conditions while maintaining communication stability through controlled adjustments based on monitored state changes.

Inventive Principle:

Principle #15Dynamics

2Reliability

If bandwidth is allocated to all functional units to ensure continuous operation, then reliability is improved, but bandwidth utilization efficiency deteriorates

Engineering Contradiction:

Improvecontinuous operation capabilityVSAvoidbandwidth utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent changes the bandwidth allocation parameter dynamically based on operational states. The management device monitors whether functional units are in active or inactive states and adjusts bandwidth allocation accordingly - allocating bandwidth to active units and reducing or suspending allocation to inactive units. This parameter change ensures continuous operation for active units while dramatically improving overall bandwidth utilization efficiency.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If network monitoring is continuously performed to detect state changes, then adaptability is improved, but energy consumption deteriorates

Engineering Contradiction:

Improvestate change detection capabilityVSAvoidenergy consumption for monitoring

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic monitoring where the management device checks operational states at predetermined time intervals rather than continuously. This periodic action reduces energy consumption significantly while still maintaining adequate adaptability to detect and respond to state changes. The monitoring frequency is optimized to balance detection capability with energy savings.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20250080455A1Management device, relay device, management method, and management program

Publication Date: 2025.03.06 AUTONETWORKS TECH LTD

AI summary

A management device includes: an acquisition unit that acquires change information from which a change in an operational state of one or more functional units included in an onboard network is discernible, and from which a change in a state of use of a transmission path in the onboard network by the functional units is discernible; and a setting change unit that performs setting change to change settings for the onboard network based on the change information acquired by the acquisition unit.