基于公平性的列车网络用户带宽分配模型研究

Research on bandwidth allocation model of train network users based on fairness

本文基于无线网状网对列车内的网络用户互联结构进行抽象,使其成为一个互联的整体。并假设网络用户的产生服从泊松分布,每个用户产生网络流个数服从几何分布,不同类型用户产生的网络流量服从正态分布。基于网络用户带宽使用的公平性,提出用户带宽分配方法,建立列车网络带宽接入模型,得到不同用户所需的带宽值和列车所需接入的最大带宽值。最后通过模拟数据进行实例验证,证明本文方法的合理性和可行性。

The paper abstracted the framework of the network users in the train and made it become an interconnected entirety based on the Wireless Mesh Network. It assumed that the generation of the network users obeyed Poisson Distribution, the number of network flows for each user obeyed Geometric Distribution and the network flow generated by different types of network users obeyed State Distribution. Based on the fairness, it was proposed the bandwidth allocation method of the network users and set up the model of the train network bandwidth, got the bandwidth value required by different network users and the maximum bandwidth value required by the train. Finally, the data was verified by simulation example, and the method was proved reasonable and practicable.