Vehicle Communication ECU for Adaptive Bandwidth Allocation
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Solution Overview
Problem
The increasing amount of data transmitted and received by vehicles leads to potential communication congestion when limiting communication areas, especially in high-traffic accident zones, affecting safe-driving support services.
Innovation Solution
A communication control device and method that calculates requested bandwidth based on vehicle computing power and sensing capability, requesting and defining utilization bandwidth to manage communication effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If communication area is limited to specific high accident-rate zones, then the number of vehicles using communication bandwidth is reduced, but communication congestion occurs when many vehicles are in the relevant area or when data amount is large
Solution Approach 1:
The patent dynamically adjusts communication bandwidth allocation based on vehicle computing power and sensing capability parameters. Vehicles with higher computing power and sensing capability are allocated larger bandwidths, enabling them to process and transmit more data efficiently. This parameter-based differentiation resolves the contradiction by allowing more vehicles to communicate simultaneously without causing congestion, while maintaining reliable communication through adaptive bandwidth assignment.
2Reliability
If communication bandwidth is increased for all vehicles, then communication reliability is improved, but communication congestion occurs due to insufficient bandwidth management
Solution Approach 1:
The patent implements local quality by allocating communication bandwidth differently to different vehicles based on their specific computing power and sensing capability. Instead of uniform bandwidth allocation, each vehicle receives a customized bandwidth quota matched to its processing and sensing abilities. This resolves the contradiction by ensuring reliable communication for each vehicle while optimizing overall system efficiency through differentiated resource allocation.
Solution Approach 2:
The patent employs dynamic bandwidth allocation where the communication bandwidth assigned to each vehicle can change based on real-time conditions, vehicle capabilities, and network status. This dynamic adjustment mechanism allows the system to maintain reliable communication while adapting to varying traffic conditions and data requirements, thereby improving overall communication efficiency without sacrificing reliability.
3Loss of information
If data transmission amount is increased for better safe-driving support, then service quality is improved, but communication congestion occurs
Solution Approach 1:
The patent changes the parameter of information transmission by encoding and compressing data according to vehicle computing power and sensing capability. Vehicles with higher capabilities can transmit more detailed and comprehensive safe-driving information, while maintaining communication reliability through adaptive data representation. This resolves the contradiction by enabling high-quality information exchange without overwhelming the communication channel.
Data Source
AI summary
A communication ECU corresponding to a communication control device controls communication between a vehicle and an outside thereof. The communication ECU includes a requested bandwidth calculation unit corresponding to a calculation unit that calculates a requested bandwidth, which is a communication bandwidth requested for execution of a specific process in the vehicle, based on at least one of a computing power and a sensing capability of the vehicle. The communication ECU includes a bandwidth request unit corresponding to a request unit that requests a communication management device to secure the requested bandwidth; and a cooperation condition notification unit corresponding to a defining unit that defines a utilization bandwidth, which is a communication bandwidth used by the vehicle, based on a response to a request to secure the requested bandwidth.