DSRC Mitigation System for Ego Vehicle Velocity Synchronization
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Solution Overview
Problem
Existing systems fail to effectively mitigate the impact of downstream vehicles traveling at slower velocities on ego vehicles, particularly in traffic jams, due to limitations in communication standards and accuracy, leading to potential collisions or unsafe driving conditions.
Innovation Solution
A mitigation system utilizing DSRC-based wireless vehicle data, including BSMs, to identify traffic obstructions and slower-moving downstream vehicles, allowing the ego vehicle to adjust its velocity to match the preceding vehicle or downstream vehicles, ensuring safe passage through lane-level accurate location data and communication protocols compliant with the DSRC standard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ego vehicle travels at a higher velocity to improve productivity, then the travel time is reduced, but the risk of collision with downstream vehicles increases
Solution Approach 1:
The system performs preliminary actions by receiving wireless vehicle data from downstream vehicles and calculating required velocity modifications in advance. The onboard vehicle computer system processes BSM data and determines the necessary deceleration before the ego vehicle reaches the downstream vehicles, allowing smooth velocity adjustment without sudden braking while maintaining safe distances.
Solution Approach 2:
The system implements continuous feedback by monitoring wireless vehicle data from downstream vehicles, calculating velocity modifications, and adjusting the ego vehicle's velocity in real-time. The system receives ongoing BSM data, recalculates required velocity changes based on current positions and speeds, and dynamically adjusts acceleration commands to maintain safe spacing while optimizing travel efficiency.
2Measurement precision
If DSRC-based wireless communication is used to improve information accuracy, then lane-level location precision is achieved, but communication infrastructure complexity increases
Solution Approach 1:
The system leverages the universality of DSRC technology, which is already widely deployed for automotive applications including BSM transmission. The same DSRC infrastructure that provides location data also enables velocity and acceleration information exchange, eliminating the need for separate specialized communication systems while achieving lane-level precision.
Solution Approach 2:
The system utilizes self-service by employing the DSRC communication protocol that is already integrated into modern vehicles for basic safety messaging. The vehicles themselves generate and transmit the necessary location and velocity data through their existing DSRC capabilities, without requiring external communication infrastructure or additional specialized hardware.
Data Source
AI summary
The disclosure includes embodiments for modifying the acceleration of an ego vehicle based on wireless vehicle data included in a wireless message. A method includes receiving the wireless message that includes wireless vehicle data that describes one or more physical properties of a downstream vehicle. The wireless vehicle data indicates a presence of a traffic obstruction. The method includes determining a modification for an acceleration of the ego vehicle based on the wireless vehicle data and the indication of the traffic obstruction. The method includes modifying the acceleration of the ego vehicle based on wireless vehicle data compliant with the DSRC standard. The modified acceleration causes the ego vehicle to travel at a velocity consistent with a preceding vehicle and the downstream vehicle so that the ego vehicle does not collide with the preceding vehicle or the other downstream vehicle, which are in the same lane as the ego vehicle.