超密集网络比例公平频谱资源分配算法  

Proportional fair resource allocation optimization algorithm in ultra-dense network

作　　者：郗文胜 朱燕丹 谭国平 Xi Wensheng;Zhu Yandan;Tan Guoping(Institute of Communication and Information Systems, Hohai University, Nanjing 211100, China)

机构地区：[1]河海大学计算机与信息学院通信与信息系统研究所

出　　处：《电子测量技术》2018年第4期24-28,共5页Electronic Measurement Technology

基　　金：科技部国际合作项目(2015DFR10560)资助

摘　　要：为了提升超密集网络中的系统总体吞吐量,研究了基站如何分配回程链路和用户接入资源的问题,提出了一种面向无线混合分层回程网络的比例公平资源分配算法（PFRA）,该算法首先对基站进行分层,并设计各层基站的帧结构;其次,基于比例公平的效用函数构建出系统吞吐量最大化的目标函数;最后,利用拉格朗日乘子法推导出了获得混合分层回程网络场景下频谱资源分配最优解的迭代算法。仿真结果表明,PFRA算法能有效提升网络吞吐量性能,并在网络吞吐量性能和用户公平性之间取得了良好的均衡效果。In order to improve the total throughput of the system in ultra-dense network,research the problem of how the base station allocates backhaul links and user access resources,propose a proportional fair resource allocation algorithm（PFRA）facing the wireless hybrid hierarchical backhaul network：First,we stratify the base stations,and design the frame structure of each station in each layer.Secondly we construct the new objective function based on the proportional fair utility function to optimize the system throughput.Last but not least,we derive the iterative algorithm based on Lagrange Multiplier algorithm to obtain the optimal solution of spectrum resources allocation in hybrid hierarchical backhaul network.Simulation results show that PFRA algorithm can effectively improve network throughput performance and achieve better trade-off between network throughput and user fairness.

关 键 词：超密集网络 混合分层回程网络 比例公平资源分配算法 

分 类 号：TN929.5[电子电信—通信与信息系统]