摘要
针对双层异构网络架构复杂、干扰严重的问题,利用空间泊松点过程对Macro-Femto双层网络进行了数学建模,推导了室外MUE和室内FUE的下行中断概率,并提出了基于距离和中断概率的家庭基站覆盖及功率控制优化方案。仿真实验表明,所推导的中断概率表达式是正确的,所提出的方案明显减少了宏用户所受的干扰,降低了宏用户的中断概率,有效提升了整个异构网络的性能。
Aiming at complex architecture and serious interference in two-tier heterogeneous network, the mathematical model of Macro-Femto system is established by using the spatial Poisson point process, and the downlink outage probability of the outdoor Macro users and the indoor Femto users derived, and the optimization scheme of Femtocell coverage and power control based on the distance and outage probability also proposed. Simulation results show that the derived outage probability expression is correct, and the proposed scheme could significantly reduce the interference and outage probability of the macro user, and effectively improves the performance of the whole heterogeneous network.
出处
《通信技术》
2016年第11期1476-1481,共6页
Communications Technology
关键词
异构网络
家庭基站
中断概率
功率控制
heterogeneous network
femtocell
outage probability
power control
