说明：  这个代码是我在仿真蜂窝网的时候写的一个函数，这个函数能够随机生成基站和移动台，并且画出蜂窝图以及移动台的分布，对于蜂窝网的仿真非常有用
(This code is a simulation cellular network when I write a function that randomly generated base station and mobile station and draw a the honeycomb diagram and the mobile station distribution, very useful for the simulation of the cellular network)