中继蜂窝网络能量效率分析  

Energy efficiency analysis of relay assisted cellular network

作　　者：陈永红[1,2] 郭莉莉[1] 张士兵[3] CHEN Yonghong;GUO Lili;ZHANG Shibing(Xinglin College,Nantong University,Nantong Jiangsu 226000,China;Department of Communication and Information Engineering, Nanjing University of Posts and Telecommunications,Nanjing Jiangsu 210003,China;School of Electronics and Information,Nantong University,Nantong Jiangsu 226019,China)

机构地区：[1]南通大学杏林学院,江苏南通226000 [2]南京邮电大学通信与信息工程学院,南京210003 [3]南通大学电子信息学院,江苏南通226019

出　　处：《计算机应用》2018年第10期2965-2970,共6页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61701221);江苏省高校自然科学基金资助项目(16KJB510013;16KJB510038);江苏省研究生创新计划项目(KYLX16_0662);南通大学杏林学院自然科学基金资助项目(2016K116)~~

摘　　要：针对宏基站采用单天线技术的中继蜂窝网络能量效率较低的问题,研究宏基站采用多天线技术的中继辅助蜂窝网络的下行传输系统,提出中继采用策略休眠方案。首先根据中继服务的用户数是否超过给定阈值,动态调整中继的工作模式;然后推导出宏基站到用户、宏基站到中继及中继到用户链路的覆盖概率和平均可达速率;最后根据单位面积功耗和单位面积可达速率推导出系统的能量效率。仿真结果表明,当宏基站密度为2×10^(-5)m^(-2)时,采用休眠策略的多天线网络的能量效率比没有采用休眠策略的网络的能量效率提高约为5. 6%;宏基站采用多天线和采用单天线相比,系统能量效率提高了30%。实验结果表明,多天线中继策略休眠蜂窝网络比单天线中继辅助蜂窝网络具有更高的能量效率。To solve the problem of low Energy Efficiency(EE)of relay assisted cellular networks where the Macro Base Station(MBS)was equipped with a single-antenna,the downlink transmission of multi-antenna relay-assisted cellular networks were considered,meanwhile,a strategic sleep scheme was proposed.Firstly,according to whether the number of users serviced by the relay exceeds a given threshold,the relay s working mode was dynamically adjusted.And then the coverage probabilities and mean achievable rates of MBS to user(UE),MBS to Relay Station(RS),RS to UE links were deduced.Finally,the energy efficiency of the system was derived based on the power consumption per unit area and the reachable rate per unit area.The simulation results show that when the density of MBS is 2×10-5 m-2,the energy efficiency of the multi-antenna network with strategic sleep scheme is about 5.6%higher than that of the cellular network with non-sleeping strategy;the system energy efficiency of MBS equipped with multiple antennas is 30%high than without sleep strategy scheme with single antenna.Experimental results indicate that the multi-antenna relay-assisted cellular network with sleep strategy scheme has higher energy efficiency than the single-antenna relay-assisted cellular network.

关 键 词：能量效率 覆盖概率 策略休眠 多天线 平均可达率 

分 类 号：TN925[电子电信—通信与信息系统]