Vehicle Communication Directivity Control by Position and Reception Power
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Solution Overview
Problem
Existing vehicle-to-vehicle communication systems fail to effectively control antenna directivity until other vehicles are detected by radar, leading to potential loss of necessary information.
Innovation Solution
An information processing device and method that controls communication unit directivity based on relative position and reception power for each designated moving body, allowing for enhanced data communication with vehicles that may affect future travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna directivity is controlled only after radar detection, then communication resources are saved, but necessary information from vehicles affecting future travel cannot be accepted
Solution Approach 1:
The controller performs preliminary actions by specifying designated moving bodies based on future travel path predictions before radar detection occurs. This allows the antenna directivity to be controlled in advance toward vehicles that will affect future travel, ensuring necessary information is accepted while avoiding unnecessary energy consumption from vehicles not on the travel path.
2Reliability
If antenna directivity is controlled for all detected vehicles, then communication quality improves, but energy consumption increases
Solution Approach 1:
The controller applies local quality by controlling antenna directivity specifically toward designated moving bodies (vehicles on future travel paths) rather than uniformly toward all detected vehicles. This selective approach ensures high communication quality with relevant vehicles while reducing energy consumption by not directing the antenna toward vehicles that will not affect future travel.
3Loss of information
If communication is maintained with all surrounding vehicles, then information completeness improves, but processing load increases
Solution Approach 1:
The controller extracts and focuses on only the essential subset of vehicles (designated moving bodies) that will affect future travel paths. By filtering out vehicles that are not relevant to future travel, the system maintains information completeness for critical vehicles while reducing processing load by not managing communications with all surrounding vehicles.
Data Source
AI summary
An information processing device includes a communication unit and a controller. The communication unit performs data communication with another vehicle present in a periphery of a host vehicle. The controller controls the data communication performed by the communication unit. The controller specifies each second other vehicle for which a quality of communication with the host vehicle does not satisfy a prescribed standard as a designated moving body. The controller identifies a relative position relative to the host vehicle, and a reception power of radio waves received from the designated moving body, for each designated moving body. The controller controls directivity related to wireless communication performed by the communication unit based on the relative position and reception power for each other vehicle.