2018 Volume 10 Issue 1 Pages 7-15
This paper proposes a method to reduce the computational complexity with little influence on the evaluation results after clarifying the factor of computational load of simulations of the Multi-Class Zone ITS information communication method.
In ITS information communication for the purpose of safety, it is important to communicate successfully between vehicles that are highly likely to collide. However, communication evaluation methods irrelevant to such collision risk is often used.
In consideration of such situations, we employed ahead of the world the new method of the communication success probability between high risk vehicles such as the distance between the centers of the vehicles is within 5 m and within 2s. However, it has been a problem that the computational load of simulations for communication performance evaluation is high.
In this paper, we analyze the computational complexity of performance evaluation in simulation, and we propose an acceleration method of simulation after clarifying causes of computational complexity. Results show that the simulation speed can be accelerated about 1.2 times at 8 vehicles/km/lane or 5.0 times at 55 vehicles/km/lane in comparison with the conventional method, and from the viewpoint of whole simulation, proposed method achieved about 4.5 times faster than conventional method.