Vehicle Path Reservation Messages for Collision-Free Lane Changes
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Solution Overview
Problem
Existing vehicle path selection methods fail to effectively prevent collisions when vehicles select the same driving path or intersecting paths, leading to potential accidents.
Innovation Solution
A method of performing contention-based path reservation using V2X virtual vehicle messages to communicate driving path changes, allowing vehicles to determine priority and change paths preferentially, preventing collisions through contention-based path reservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicles select driving paths independently based on road environment and traffic information, then driving efficiency is improved, but collision risk increases when paths intersect or are identical
Solution Approach 1:
The system performs preliminary path reservation before actual path execution. Vehicles broadcast path reservation requests containing their intended driving paths in advance, allowing other vehicles to detect and avoid conflicts before they occur. This preliminary action enables independent path selection to continue while preventing collisions through advance coordination.
Solution Approach 2:
The system implements feedback through path reservation response messages. When a vehicle receives a path reservation request, it responds with acceptance or rejection based on path conflict detection. This feedback mechanism allows vehicles to adjust their path selections dynamically, maintaining driving efficiency while ensuring collision prevention through continuous information exchange.
2Reliability
If vehicles perform path reservation communication with surrounding vehicles, then collision prevention is improved, but communication complexity and message transmission overhead increase
Solution Approach 1:
The system extracts only the essential path reservation information from complete vehicle data. Instead of transmitting full vehicle states, it broadcasts condensed path reservation requests containing only necessary elements (intended path, vehicle identifier), reducing message size and transmission complexity while maintaining collision prevention capability.
Solution Approach 2:
The system uses standardized path reservation message templates that can be copied and transmitted repeatedly. These pre-defined message structures simplify communication protocol implementation and reduce processing complexity compared to custom message generation, while ensuring consistent and reliable path reservation information exchange.
Data Source
AI summary
Disclosed is a method for a vehicle transmitting a signal in a wireless communication system. The method may comprise: receiving information on a road environment; driving a vehicle along a selected path on the basis of the information on the road environment; and, on the basis of satisfying a predetermined condition, transmitting a message for reserving a lane change to a specific lane among at least one lane included in the path. In addition, the message may include information on a virtual vehicle corresponding to the vehicle when in the specific lane. In addition, whether or not the predetermined condition is satisfied may be determined on the basis of: i) the right of way of the vehicle with respect to the lane changing; or ii) a back-off counter.