《计算机应用研究》|Application Research of Computers

异构网络下基于混合保护子帧的干扰协调方案

Interference coordination scheme based on hybrid protected subframes in heterogeneous networks

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作者 刘辉,宋家旺
机构 1.重庆邮电大学 通信新技术应用研究中心,重庆 400065;2.重庆信科设计有限公司,重庆 401121
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文章编号 1001-3695(2019)08-057-2509-05
DOI 10.19734/j.issn.1001-3695.2018.02.0105
摘要 增强型小区间干扰协调(enhanced inter cell interference coordination,eICIC)引入几乎空白子帧(almost black subframes,ABS)来降低异构网络中小区间的干扰,然而过多的ABS会损失宏蜂窝用户性能。为了提高异构网络的性能,联合考虑ABS和低功率几乎空白子帧(low power-ABS,LP-ABS),提出了一种基于混合保护子帧(hybrid protected subframes,HPS)的干扰协调方案。该方案综合考虑用户资源分配、HPS密度、HPS混合比例以及用户接入策略,以最大化系统比例公平效用为目标。仿真结果显示,所提方案在系统负载均衡、用户吞吐量以及用户公平性等指标上都优于传统增强型小区间干扰协调方案。
关键词 异构网络; 增强型小区间干扰协调; 混合保护子帧; 小区范围扩展
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本文URL http://www.arocmag.com/article/01-2019-08-057.html
英文标题 Interference coordination scheme based on hybrid protected subframes in heterogeneous networks
作者英文名 Liu Hui, Song Jiawang
机构英文名 1.Research Centre of New Telecommunication Technology Application,Chongqing University of Posts & Telecommunications,Chongqing 400065,China;2.Chongqing Information Technology Designing Company Limited,Chongqing 401121,China
英文摘要 eICIC introduces ABS to reduce inter-cell interference in heterogeneous networks. However, excessive ABS can impair macrocell user performance. In order to improve the performance of heterogeneous networks, this paper proposed an interference coordination scheme based on HPS considering both ABS and LP-ABS. The scheme took into account the resource allocation, HPS density, HPS mixing ratio and user access strategy, in order to maximize the fairness of system proportion as the goal. Simulation results show that the proposed scheme is superior to the traditional enhanced inter-cell interference coordination schemes in terms of system load balancing, user throughput and user fairness.
英文关键词 heterogeneous networks; eICIC; hybrid protected subframes; cell range expansion
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收稿日期 2018/2/1
修回日期 2018/4/3
页码 2509-2513
中图分类号 TN929.53
文献标志码 A