异构网络解耦与耦合级联方案覆盖性能比较  

Coverage Performance Comparison of DUDA and CUDA Schemes for Heterofeneous Network

作　　者：范巧玲 贾向东 纪澎善[1] 路艺 FAN Qiaoling;JIA Xiangdong;JI Pengshan;LU Yi(College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China;Wireless Communication Key Lab of Jiangsu Province,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]西北师范大学计算机科学与工程学院,兰州730070 [2]南京邮电大学江苏省无线通信重点实验室,南京210003

出　　处：《计算机工程》2020年第3期151-156,共6页Computer Engineering

基　　金：国家自然科学基金(61861039,61561043,61261015);甘肃省科技计划“无人机关键技术研究”(18YF1GA060)。

摘　　要：针对异构网中上行链路(UL)和下行链路(DL)负载不平衡的问题,提出一种解耦UL/DL级联(DUDA)联合方案。通过双连接简化级联条件推导主、从UL接入距离的概率密度函数,利用随机几何工具推导DUDA UL覆盖概率的一般形式,从而得出整个网络的UL平均覆盖概率。数值仿真结果表明,与传统CUDA方案相比,DUDA联合方案的覆盖性能更优。Aiming at the unbalanced load of Uplink(UL)and Downlink(DL)in the Heterogeneous Network(HetNet),this paper proposes a Decoupling UL and DL Association(DUDA)scheme.The probability density functions of primary and secondary UL access distances are derived by simplifying the association condition of Dual Connectivity(DC).The general form of the DUDA UL coverage probability is calculated by using stochastic geometry tool,thus obtaining the UL Average Coverage Probability(ACP)of the whole network.Numerical and simulation results show that compared with the traditional CUDA scheme,the coverage performance of the DUDA scheme is better.

关 键 词：异构网络 平均覆盖概率 双连接 解耦级联 耦合级联 

分 类 号：TN929.5[电子电信—通信与信息系统]