一种多流多载波HetNet用户归属策略  

A Multi-flow Multi- carrier HetNet User Association Policy

作　　者：储晶星 邱玲[1] 

机构地区：[1]中国科学技术大学,安徽合肥230027

出　　处：《无线电工程》2014年第8期5-7,17,共4页Radio Engineering

基　　金：中国科大-华为合作基金资助项目(YBWL2011110120)

摘　　要：异构网(HetNet)是增强小区覆盖、提高小区吞吐量的有效途径。通用移动通信系统(Universal Mobile Telecommunications System,UMTS)引入多流多载波技术作为HetNet增强方案,可以进一步提高系统吞吐量。针对多流多载波HetNet场景下各类型小区负载不均衡的问题,建立了一个多流多载波HetNet用户归属联合优化模型,并通过求解该模型给出了具体的算法流程。仿真结果表明,相对于已有的Bias方案和软复用方案,所提算法能够在提升用户平均吞吐量的同时,显著提高小区边缘用户吞吐量和用户速率公平性。HetNet is a promising solution to strengthen cell coverage and increase cell throughput.With the introduction of multi-flow ＆ multi-carrier technique in the UMTS system,the throughput of HetNet has been gearing up.In order to solve load imbalance prob-lem in multi-flow ＆ multi-carrier HetNet scenario,this paper establishes a multi-flow ＆ multi-carrier HetNet user association joint opti-mization model and a specific algorithm is then proposed through solving the optimization model.Simulation results revealed that com-pared to the existing schemes,the proposed algorithm improves user’ s average throughput,boosts the cell edge user throughput and improves user’s rate fairness remarkably.

关 键 词：HetNet 多流多载波 用户归属 小区边缘用户吞吐量 

分 类 号：TN92[电子电信—通信与信息系统]