基于Macro、Femto的双层网络的性能分析

Analysis of the received SIR within the Macro-Femto twin-layer networks

主要研究在已有的宏基站网络的基础上部署"毫微微蜂窝(Femto)"基站,从而形成独特的双层网络结构下终端用户的接收信噪比(SIR)的分布。通过对宏基站、Femto基站分别进行Fluid Mod-el、空间泊松随机点过程进行建模,推导出用户的接收信噪比的分布函数。大量的蒙特卡洛仿真结果表明,所推导出的理论分析结果能十分准确地描述终端用户的接收信噪比,其理论分析方法可以方便地用于网络性能分析、设计与优化。

The femtocells are proposed to off-load the huge traffic demand in future network, where the femtocells are de-ployed within the traditional maerocells. As a result, a twin-layer maero-femto network is formulated, where the femtocells are ran-domly deployed within the macroeell. In this paper, we investigate the received signal-interference-ratio （SIR） of this twin-layer network, where the femtocells are distributed according to spatially poisson point process （SPPP）. We derived the spatially averaged complementary distribution function （CDF） of the received SIR. Our simulation results demonstrate that the derived CDF is capable of matching the simulation results accurately. As a result, the proposed method may be employed to the analysis and design of this twin-layer network.