基于能效的异构蜂窝网络微基站部署研究
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摘要
针对齐次泊松点过程下异构蜂窝网络的能量效率进行了研究。利用齐次泊松点过程对异构蜂窝网络进行建模;然后在瑞利信道环境下给出了系统的覆盖率和可达速率的表达式,并且推导了能量效率的闭合形式的表达式;通过凸优化算法对微基站密度进行优化,使网络能量效率达到最大。仿真结果表明,微基站的密度对系统能量效率有着显著的影响,通过合理地设置微基站密度能有效提高系统的能量效率。
This paper researched the energy efficiengy of heterogenous cellular networks in homogenous Poisson point process.Firstly,it modeled the heterogenous cellular networks by using homogenous Poisson process. Secondly,it derived the expression of system's coverage probability and achievable rata in Rayleigh channel situations,and deduced the expression of energy efficiency's closed form. Finally,it optimized the density of micro-base station via convex-optimum method in order to maximize networks' energy efficiency. The simulation results show that micro-base station's density has significant effects on system's energy efficiency. Its essence is through reasonable setting of micro-base station's density to available help improve its efficiency.
This paper researched the energy efficiengy of heterogenous cellular networks in homogenous Poisson point process.Firstly,it modeled the heterogenous cellular networks by using homogenous Poisson process. Secondly,it derived the expression of system's coverage probability and achievable rata in Rayleigh channel situations,and deduced the expression of energy efficiency's closed form. Finally,it optimized the density of micro-base station via convex-optimum method in order to maximize networks' energy efficiency. The simulation results show that micro-base station's density has significant effects on system's energy efficiency. Its essence is through reasonable setting of micro-base station's density to available help improve its efficiency.
引文
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[17] Dhillon H S,Andrews J G. Downlink rate distribution in heterogeneous cellular networks under generalized cell selection[J]. IEEE Wireless Communications Letters,2014,3(1):42-45.
[2] Andrews J G,Buzzi S,Choi W,et al. What will 5G be?[J]. IEEE Journal on Selected Areas in Communications,2014,32(6):1065-1082.
[3] Andrews J G,Baccelli F,Ganti R K. A tractable approach to coverage and rate in cellular networks[J]. IEEE Trans on Communications,2011,59(11):3122-3134.
[4] Sun Xun,Wang Shaowei. Resource allocation scheme for energy saving in heterogeneous networks[J]. IEEE Trans on Wireless Communications,2015,14(8):4407-4416.
[5]邱畅啸,冷甦鹏,叶宇.基于能效的异构无线网络联合切换调度和资源分配算法[J].计算机应用,2015,35(6):1505-1508,1518.(Qiu Changxiao,Leng Supeng,Ye Yu. Joint switch scheduling and resource allocation algorithm based on energy efficiency in hete-rogeneous wireless network[J]. Journal of Computer Applications,2015,35(6):1505-1508.)
[6] Cao Dongxu,Zhou Sheng,Niu Zhisheng. Optimal combination of base station densities for energy-efficient two-tier heterogeneous cellular networks[J]. IEEE Trans on Wireless Communications,2013,12(9):4350-4362.
[7] Soh Y S,Quek T Q S,Kountouris M,et al. Energy efficient heterogeneous cellular networks[J]. IEEE Journal on Selected Areas in Communications,2013,31(5):840-850.
[8] Liu Hao,Zhang Haijun,Cheng Julian,et al. Energy efficient power allocation and backhaul design in heterogeneous small cell networks[C]//Proc of IEEE International Conference on Communications.Piscataway,NJ:IEEE Press,2016:1-5.
[9] Cao Dongxu,Zhou Sheng,Niu Zhisheng. Improving the energy efficiency of two-tier heterogeneous cellular networks through partial spectrum reuse[J]. IEEE Trans on Wireless Communications,2013,12(8):4129-4141.
[10]Zhang Yuhao,Cui Zhiyan,Cui Qimei,et al. Energy efficiency analysis of heterogeneous cellular networks with extra cell range expansion[J]. IEEE Access,2017,5(6):11003-11014.
[11] Wang Min,Gao Hui,Lyu Tiejun. Energy-efficient user association and power control in the heterogeneous network[J]. IEEE Access,2017,5(3):5059-5068.
[12]Ghazzai H,Farooq M J,Alsharoa A,et al. Green networking in cellular Het Nets:a unified radio resource management framework with base station on/off switching[J]. IEEE Trans on Vehicular Technology,2016,66(7):5879-5893.
[13] Baccelli F,Blaszczyszyn B. Stochastic geometry and wireless networks,partⅡ:applications[M]. Hanover,MA:Now Publishers Inc,2009:1-312.
[14] Haenggi M. Stochastic geometry for wireless networks[M]. New York:Cambridge University Press,2012.
[15]Dhillon H S,Ganti R K,Baccelli F,et al. Modeling and analysis of K-tier downlink heterogeneous cellular networks[J]. IEEE Journal on Selected Areas in Communications,2011,30(3):550-560.
[16]Singh S,Dhillon H S,Andrews J G. Offloading in heterogeneous networks:modeling,analysis,and design insights[J]. IEEE Trans on Wireless Communications,2013,12(5):2484-2497.
[17] Dhillon H S,Andrews J G. Downlink rate distribution in heterogeneous cellular networks under generalized cell selection[J]. IEEE Wireless Communications Letters,2014,3(1):42-45.