Vehicle network data distribution congestion control method based on congestion game

Abstract

The invention discloses a vehicle network data distribution congestion control method based on a congestion game. The problem that network congestion cannot be effectively solved in the prior art is mainly solved. The method comprises the implementation steps that 1, a congestion game model of a vehicle network is built according to an existing network congestion game model; 2, a utility function of the vehicle network related to service quality and transmission delay is constructed according to a utility function in the congestion game model; 3, a potential function of the congestion game model of the vehicle network is built according to the utility function and is corrected; 4, the convergence problem of the congestion game is converted into potential function value minimization based on the wardrop theory and the congestion game equilibrium existence principle; 5, a slot time distribution matrix is obtained through a heuristic algorithm, and a vehicle selects to carry out transmission or waiting according to the slot time distribution matrix. The method can effectively reduce network congestion, and can be used for vehicle network dense scenes and congestion control of safety relevant application data distribution.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a method for controlling vehicle network data distribution congestion in the field of VANETs, ​​which can be used for congestion control of safety-related application data distribution in dense vehicle scenes. Background technique [0002] Vehicle Ad Hoc Networks VANETs are ad hoc networks for communication between moving vehicles. In the vehicular ad hoc network, each vehicle is equipped with an on-board device, and vehicles rely on this device to freely communicate with each other or communicate with roadside base stations, such as figure 1 shown. [0003] The vehicle ad hoc network supports a series of applications related to traffic safety, such as collaborative collision warning CCW, traffic signal violation warning, lane change warning, etc. Such applications ensure the safety of participants as much as possible and reduce the probability of accidents by effe...

AI Technical Summary

Problems solved by technology

Although PULSAR is a distributed algorithm that can meet the diverse transmission rate and propagation range requirements of different applications, its original design is mainly to ensure the fairness of node access channels, and does not consider the different priority services in VANETs. services

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