Energy Efficiency Optimization for Heterogeneous Cellular Networks Modeled by Matérn Hard-Core Point Process  

作　　者：Yonghong Chen Jie Yang Xuehong Cao Shibing Zhang 

机构地区：[1]Department of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China [2]Xinglin College,Nantong University,Nantong 226019,China [3]Department of Communication Engineering,Nanjing Institute of Technology,Nanjing 211167,China [4]School of Information Science and Technology,Nantong University,Nantong 226019,China

出　　处：《China Communications》2020年第8期70-80,共11页中国通信（英文版）

基　　金：partly supported by the National Natural Science Foundation of China(Grant No.61871241,No.61701221);the Natural Science Foundation of Jiangsu Province(No.BK20160781);Nantong Science and Technology Project(No.JC2018127,No.JC2019117);the Research Innovation Project for College Graduates of Jiangsu Province(No.KYLX16_0662)。

摘　　要：The Poisson point process(PPP) has been widely used in wireless network modeling and performance analysis due to the independence between its nodes. Therefore, it may not be a suitable model for many of the exclusive networks between the nodes. This paper analyzes the energy efficiency(EE) and optimizes the two-tier heterogeneous cellular networks(Het Nets). Considering the mutual exclusion between macro base stations(MBSs) distribution, the deployment of MBSs is modeled by the Matérn hard-core point process(MHCPP), and the deployment of pico base stations(PBSs) is modeled by the PPP. We adopt a simple approximation method to study the signal to interference ratio(SIR) distribution in two-tier MHCPP-PPP networks and then derive the coverage probabilities, the average data rates and the energy efficiency of Het Nets. Finally, an optimization algorithm is proposed to improve the EE of Het Nets by controlling the transmit power of PBSs. The simulation results show that the EE of a system can be effectively improved by selecting the appropriate transmit power for the PBSs. In addition, two-tier MHCPP-PPP Het Nets have higher energy efficiency than two-tier PPP-PPP Het Nets.

关 键 词：energy efficiency heterogeneous cellular networks coverage probability matérn hard-core point process 

分 类 号：TN929.53[电子电信—通信与信息系统]