V2X Relay System for Obstructed Vehicle Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing V2X communication systems face increased traffic due to unnecessary vehicle information transmission, particularly when direct communication is obstructed by obstacles like buildings or trees, leading to inefficiencies in collision avoidance systems.
Innovation Solution
A V2X vehicle-mounted device and relay system that determines the presence of vehicles in areas where direct transmission is difficult, only transmitting vehicle information via relays if a vehicle is present in those areas, using lists of direct transmission difficulty areas and considering traveling orientations to prevent unnecessary data relaying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicle information is relayed to all vehicles in an area through V2X communication, then collision avoidance capability is improved, but communication traffic amount increases due to unnecessary transmissions
Solution Approach 1:
The system performs preliminary determination of whether a transmission-destination vehicle is present in an area where direct transmission is difficult, before actually transmitting the vehicle information. This preliminary check prevents unnecessary transmissions and reduces communication traffic while ensuring reliable collision avoidance information is delivered only when needed.
Solution Approach 2:
The system uses feedback from the determination result (whether a transmission-destination vehicle is present) to control the transmission action. When a vehicle is detected in the difficult transmission area, information is transmitted; when no vehicle is present, transmission is suppressed. This feedback mechanism optimizes communication traffic while maintaining safety.
2Reliability
If vehicle information is transmitted via relay in obstructed areas, then communication reliability is improved, but transmission efficiency decreases due to increased traffic
Solution Approach 1:
The system performs preliminary determination of vehicle presence in obstructed areas before initiating relay transmission. This preliminary action ensures that relay transmission is activated only when necessary, maintaining communication reliability while preventing unnecessary transmissions that would reduce overall system efficiency.
Solution Approach 2:
The system applies different transmission strategies to different spatial locations: direct transmission is used where possible, while relay transmission is selectively applied only in areas where direct transmission is difficult and a transmission-destination vehicle is actually present. This local differentiation optimizes both reliability and efficiency.
Data Source
AI summary
A conventional V2X communication system relays vehicle information received from vehicles, from a base station to all vehicles in an area. Accordingly, a problem arises in that unnecessary transmission to vehicles which do not require vehicle information occurs, resulting in increase in a traffic amount in communication. According to the present disclosure, only if it is determined, based on information that is held by a vehicle or a base station and that is about an area in which direct transmission or reception is difficult, that direct transmission of vehicle information to another vehicle or reception of vehicle information transmitted from the other vehicle is difficult, the vehicle information is transmitted to the other vehicle via the base station.