智能电网中基于排队论的协作传输模型研究

Smart Grid Cooperative Communication Model Research Based on Queue Theory

终端数据采集与传输是智能电网的关键环节之一,为防止数据拥塞和丢包,可以在终端无线网络中引入协作传输技术。基于排队论的性质和方法,在协作传输中,提出了两种中继服务的排队模型,对一个排队队列模型和多个排队队列模型的系统性能进行了比较。仿真结果表明,单个队列的M/M/C队列模型网络时延性能上要优于多个队列的M/M/1队列模型,增加中继站的数量在一定范围内可以提高系统性能,但要合理部署中继站数量以取得最佳性价比。

The terminal data acquisition and transmission is one of the key links in the smart grid. To prevent data congestion and packet loss, cooperative transmission could be introduced in wireless terminal network. This paper proposes two kinds of relay service queuing model by using the properties of queuing theory and method. The perform-ance of the one-queue model and the multiple-queues model are compared. Simulation results show that M/M/C mod-el＇s performance is better than M/M/1 model. Increasing the number of relay station can improve system performance to some extent. But in order to obtain the optimal price/performance ratio, the reasonable decision of relay station number should be made.