利用小区范围扩展增强小区间干扰协调对LTE-A异构网络拓扑的影响

Kehali A. Jember, T. Abose, T. Olwal, Murad R. Hassen
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引用次数: 1

摘要

最近,由于智能手机、平板电脑和机器对机器通信等创新无线设备的出现,无线数据流量呈指数级增长。3GPP将LTE release-8作为第一个标准引入,并继续进一步研究引入LTE- a,以改进网络,并考虑到这些创新设备和服务。就LTE-A而言,引入异构网络是为了通过在服务宏蜂窝的覆盖区域上部署小型蜂窝来提高网络性能。部署这种小型计算单元的基本目标是将用户从拥挤的宏计算单元转移到小型计算单元。由于发射功率低,小型蜂窝只能覆盖有限的区域。为了提高小基站的覆盖和容量,本研究引入了小区范围扩展技术。小区范围扩展通过增加正偏移偏置提高小小区用户的接收信号功率。根据开发的分析框架进行了计算机模拟。仿真结果验证了在宏小区上部署小小区可以提高用户和小区的吞吐量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of Enhanced Inter-Cell Interference Coordination on Heterogeneous Network Topology in LTE-A Using Cell Range Extension
Recently, wireless data traffic is growing exponentially due to innovative wireless devices such as smart phones, tablets, and machine-to-machine communications and so on. 3GPP introduces LTE release-8 as first standard and continues further research to introduce LTE-A for network improvement having those innovative devices and services in mind. As far as LTE-A is concerned, Heterogeneous Networks are introduced to improve network performance by deploying small cells over the coverage area of the serving Macro cells. The essential target of deploying such a small cell is to offload the users from the congested Macro cells towards the small cells. Small cell covers only limited areas due to low transmit power. To increase coverage and capacity of small cell, cell range extension was introduced in this research. Cell range extension boosts received signal power of small cell users by adding positive offset bias. Computer simulations are carried out following the developed analytical frameworks. The simulation results validates that deploying small cell over Macro cell improves user and cell throughput.
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