Vehicle Communication Apparatus Predictive Position Transmission

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Solution Overview

Problem

Conventional communication apparatuses face challenges in recognizing actual vehicle behavior while maintaining communication quality, as increased transmission frequency of vehicle information leads to heavy communications traffic and potential signal collisions.

Innovation Solution

A communication apparatus that estimates predicted arrival positions based on current vehicle state information and transmits updates only when the information coincidence degree falls below a specified threshold, ensuring accurate recognition of vehicle behavior without excessive data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the frequency of transmitting own vehicle information is increased, then the own vehicle information corresponding to the actual behavior of the vehicle can be transmitted, but communications traffic becomes heavy and communication quality deteriorates due to signal collisions

Engineering Contradiction:

Improveaccuracy of vehicle behavior recognitionVSAvoidcommunications traffic volume

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential information elements (current position and predicted arrival positions) from the complete vehicle state data, transmitting minimal necessary information to maintain accuracy while reducing overall traffic volume. This selective extraction allows the system to focus communication resources on critical position data rather than transmitting all vehicle parameters continuously.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary estimation of predicted arrival positions before actual transmission occurs. By pre-calculating where the vehicle will be at future time points based on current state information, the system prepares position data in advance, allowing other vehicles to anticipate movements without requiring continuous real-time transmission of every position update.

Inventive Principle:

Principle #10Preliminary action

2Reliability

Engineering Contradiction:

Improveaccuracy of vehicle behavior recognitionVSAvoidsignal collisions

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent transmits only the critical position information elements (current position and predicted arrival positions) rather than complete vehicle state data. This extraction of essential information maintains the reliability needed for collision avoidance and behavior prediction while significantly reducing the amount of data occupying communication channels, thereby reducing signal collision probability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent transmits position information at strategically selected moments rather than continuously. By transmitting only when position data becomes available through prediction calculations or actual measurements, the system provides sufficient information for reliable behavior recognition without the excessive transmission frequency that would cause signal collisions.

Inventive Principle:

Principle #16Partial or excessive action

3Loss of information

If own vehicle information is transmitted frequently, then another communication apparatus can recognize actual vehicle behavior, but communications traffic becomes heavy

Engineering Contradiction:

Improvecompleteness of vehicle behavior informationVSAvoidcommunications traffic

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent performs preliminary calculations to estimate predicted arrival positions at future time points before transmission is needed. By pre-computing where the vehicle will be based on current state information and predicted trajectories, the system provides complete behavioral information (current position plus future positions) without requiring frequent transmission updates, thus reducing communications traffic while maintaining information completeness.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent segments position information into distinct temporal components: current position and multiple predicted arrival positions at different future time points. This segmentation allows the transmission of comprehensive vehicle behavior data (where the vehicle is now and where it will be) in a structured format that reduces redundant information and optimizes communication efficiency.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8760320B2Communication apparatus and communication method

Publication Date: 2014.06.24 DENSO CORP

AI summary

A communication apparatus is installed in a vehicle. A time information obtaining unit obtains a current time. A state information obtaining unit repeatedly obtains state information representing a state of an own vehicle at the current time. An own vehicle information generating unit estimates predicted arrival positions at specific times between the current time and a specified time, and repeatedly generates own vehicle information including the current position and the predicted arrival positions. An information transmitting unit transmits the own vehicle information. An information storage unit stores the own vehicle information into a first storage section as past own vehicle information. The information transmitting unit obtains an information coincidence degree representing the degree of the coincidence between current own vehicle information and the past own vehicle information, and transmits the current own vehicle information if the information coincidence degree is less than a specified threshold.