Method for improving communication connectivity of Internet of Vehicles based on double-lane grid fluid mechanics

Abstract

The invention discloses a method for improving Internet of Vehicles communication connectivity based on double-lane grid fluid mechanics. The method comprises the following steps: 1) constructing a double-lane Internet of Vehicles communication model; 2) deducing a density condition which needs to be met for ensuring the stability of the traffic flow; 3) constructing a direct connectivity probability function based on traffic flow stability; 4) deducing conditions for stabilizing the traffic flow after the driver adjusts the time in the traffic flow changing process; 5) constructing a continuous connectivity probability function between the vehicles. According to the method, the movement of the vehicles on the road is regarded as the flow of particles, and the lane changing behaviors of the vehicles are coordinated by adopting a double-lane grid fluid mechanics model, so that traffic jam caused by a large number of lane changing behaviors is avoided, and the communication connectivity of the vehicles is improved on the basis of ensuring the stability of the traffic flow.

Description

technical field [0001] The invention relates to the field of in-vehicle communication, in particular to a method for improving the communication connectivity of the Internet of Vehicles based on two-lane grid fluid mechanics. Background technique [0002] The vehicle-mounted network can greatly improve the safety of road driving and the effectiveness of transportation by applying wireless communication technology to vehicle-to-vehicle communication. In order to ensure the real-time and reliable transmission of safety warning information and traffic congestion information, the overall performance of the vehicle communication system must be improved. However, due to the complexity of actual traffic conditions, such as traffic stability, vehicle acceleration and deceleration, and lane changes, all of which seriously affect the performance of the communication system, posing severe challenges to the reliable transmission of wireless communication between vehicles. Therefore, it...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the connectivity between vehicles, most of the current ideas are to use other vehicles on the road or add roadside units for cooperative communication, but for the cooperation between vehicles, there is a problem of willingness to cooperate, and adding roadside units also There will be problems of setting rationality and cost, and these works also ignore the fact that vehicles change lanes in actual traffic. After vehicles change lanes, the distance between vehicles will change, and the connectivity between vehicles will also change. , in many cases, after changing lanes, the distance between vehicles can meet the link connectivity requirements, and there is no need for cooperative communication

[0004] However, changing lanes irregularly will not improve the connectivity, but will also cause road congestion. Therefore, choose a suitable traffic flow model to standardize the lane changes of vehicles, so that the Internet of Vehicles can improve when the traffic flow is relatively stable. The connectivity of the communication link is more scientific and reasonable

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