Vehicle Communication Filtering for Collision-Relevant Message Load
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Solution Overview
Problem
Existing vehicle-to-vehicle communication systems face high processing loads due to large message volumes, leading to potential failures or delays in processing important messages, which can hinder timely collision alerts.
Innovation Solution
A vehicle-mounted communication device that determines a message processing area based on ego-vehicle information, selectively processing messages within this area and discarding those outside it, thereby reducing unnecessary processing loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all received messages are processed, then message verification completeness is improved, but processing load increases
Solution Approach 1:
The patent divides the processing task by segmenting messages into two categories: those within the message processing area (front area defined by ego-vehicle position and advancing direction) and those outside. Only messages within the defined area are processed, while others are discarded. This spatial segmentation of message processing reduces the processing load while maintaining reliability for critical collision avoidance messages.
Solution Approach 2:
The patent applies local quality by focusing processing resources on specific local messages within the message processing area rather than uniformly processing all received messages. The message processing area is dynamically defined based on ego-vehicle information (position, speed, advancing direction), creating a localized processing zone that prioritizes relevant messages while ignoring irrelevant ones.
2Measurement precision
If detailed message analysis is performed, then message processing accuracy is improved, but processing time increases
Solution Approach 1:
The patent performs preliminary action by first determining the message processing area based on ego-vehicle information before actually processing messages. This preliminary definition of the processing area filters out irrelevant messages in advance, reducing the number of messages that require detailed analysis and thus decreasing overall processing time while maintaining accuracy for critical messages.
Solution Approach 2:
The patent extracts and removes messages outside the message processing area from the processing queue before detailed analysis is performed. By taking out irrelevant messages early in the process, the system reduces the volume of messages requiring detailed analysis, thereby decreasing processing time while preserving accuracy for messages that do require processing.
3Reliability
If all received messages are processed, then collision detection reliability is improved, but computational resources consumed increase
Solution Approach 1:
The patent segments computational resources allocation by processing only messages within the defined message processing area. The processing area is determined based on ego-vehicle position and advancing direction, creating a spatial filter that directs computational power toward relevant collision-risk messages while avoiding unnecessary computation on messages from areas unlikely to pose collision threats.
Solution Approach 2:
The patent applies partial action by processing only a subset of received messages (those within the message processing area) rather than all messages. This partial processing approach maintains sufficient collision detection reliability for critical messages while significantly reducing computational resource consumption by ignoring messages that are unlikely to be relevant.
Data Source
AI summary
The vehicle-mounted communication device includes: a reception unit which receives, from remote vehicles, remote-vehicle messages each including information about a remote-vehicle position; an ego-vehicle information acquisition unit which acquires, as information about an ego vehicle, ego-vehicle information including at least an ego-vehicle position, an ego-vehicle speed, and an ego-vehicle advancing direction; a message processing area determination unit which determines a message processing area on the basis of the ego-vehicle information; a message processing necessity determination unit which acquires the remote-vehicle messages from the reception unit, outputs, as a selected remote-vehicle message, a remote-vehicle message the remote-vehicle position of which is present within the message processing area, and discards a remote-vehicle message the remote-vehicle position of which is present outside the message processing area; and a message processing unit which performs processing on the selected remote-vehicle message outputted from the message processing necessity determination unit.