Reference model adaptive rate control system and method in collaborative vehicle safety system

Abstract

The invention discloses a reference model adaptive rate control system and method in a collaborative vehicle safety system. The system comprises a real-time vehicle tracking module, a reference model module and an adaptive rate control module. The method comprises the following steps: 1) the real-time vehicle tracking module provides own state information to surrounding vehicles and estimates the states of the surrounding vehicles; 2) the reference model module estimates the number of current vehicles, vehicle speed and interference according to the real traffic flow condition obtained from the vehicle tracking module, calculates the total receiving probability of a data packet and maps the total receiving probability into tracking precision, and finally predicts an ideal vehicle network state by a finite time domain rolling optimization method based on the receivable tracking precision; 3) the adaptive rate control module gives a real-time rate control strategy according to the ideal vehicle network state and the current actual vehicle network state. The influence of various factors in the Internet of Vehicles is fully considered, and the real-time tracking precision of a vehicle is greatly improved while channel congestion is reduced.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles communication, in particular to a reference model adaptive rate control system and method in a coordinated vehicle safety system. Background technique [0002] Vehicular Ad hoc Networks (VANET), also known as the Internet of Vehicles, is considered to be an important part of the Intelligent Transportation System (ITS). Its main goal is to improve road safety and comfort. VANET enhances road safety through Vehicle-to-Vehicle (V2V) communication and provides active safety applications such as cooperative collision warning, electronic emergency brake lights, pre-collision warning, overtaking warning, and slow / stopped vehicles change etc. However, these active safety applications require the vehicle to have a good estimate of the location and state of its nearby vehicles. The vehicle uses its surrounding awareness to detect a possible collision and warn the driver. This concept is cal...

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