车载自组织网络中节点合作行为的博弈研究

Research on Evolutionary Game Theory for Cooperative Behavior of Node in VANETs

在车载自组织网络中使用公共品博弈理论促进节点合作的研究表明车辆密集区域的节点会呈现不合作状态.本文通过模拟实验得知当节点平均度数较低时,节点更容易产生合作行为.为了提高车辆密集区域中合作节点的比例,本文提出了博弈度数与博弈拓扑的概念,并在此基础上构建了一种能够更改网络博弈拓扑,降低节点博弈度数的分组博弈理论模型.实验结果表明,在车辆密集区域使用该博弈模型能够显著提高网络中合作节点的比例.

Studies in vehicular ad hoc networks using public goods game theory to enhance the cooperation show that the performance of cooperation in those types of network would have been poor in the areas with high vehicle density. In this paper, the result of simulation shows that the certain range of degrees of vehicle will enhance the cooperation in network.Therefore, we propose a grouping game model with the concept of the game degree and game topology to enhance the cooperation in the areas with high vehicle density. This model can change the game topology and reduce the game degree of nodes. The experimental results show that using this model in any high density regions of vehicles can significantly enhance the performance of cooperation in the network.