为了应对未来通信网络更高速率和可靠性的需求,蜂窝网的发展面临巨大挑战。一种可行的解决方案就是在蜂窝网络中部署中继站。同时,由于通信网络能耗的降低已成为一个亟待解决的问题,高能效的通信网络成为未来的发展趋势。该文基于随机几何模型研究了中继蜂窝网络的能效问题,分别推导了宏基站-用户链路、宏蜂窝-中继站链路和中继站-用户链路的覆盖概率,并对宏基站和中继站的功耗进行了建模,在此基础上推导出了下行中继蜂窝网络的能效表达式。仿真结果表明:随着宏基站密度增加,网络能效性能会逐渐提升并最终收敛。 In order to meet the demand of higher speed and reliability of the future communication network, the development of the cellular network faces enormous challenge. A viable solution is to deploy repeaters in cellular networks. At the same time, as the energy consumption of communication networks has become a problem to be solved urgently, the energy-efficient communication network has become the future trend of development. Based on the stochastic geometric model, the energy efficiency of trunked cellular networks is studied, and the coverage probabilities of macro base station - user link, macrocell-relay link and relay station - user link are respectively deduced. The power of macro base station and relay station Based on this, the energy efficiency expression of downlink relay cellular network is deduced. The simulation results show that as the density of macro base stations increases, the network energy efficiency performance will gradually increase and finally converge.