Performance Analysis of Cache-Enabled Millimeter Wave Small Cell Networks

被引：22

作者：

Zhu, Yongxu ^{[1
]}

Zheng, Gan ^{[1
]}

Wong, Kai-Kit ^{[2
]}

Jin, Shi ^{[3
]}

Lambotharan, Sangarapillai ^{[1
]}

机构：

[1] Loughborough Univ Technol, Wolfson Sch Mech Elect & Mfg Engn, Loughborough LE11 3TU, Leics, England

[2] UCL, Dept Elect & Elect Engn, London WC1E 6BT, England

[3] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2018年 / 67卷 / 07期

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

Millimeter wave; cache-enabled network; backhaul; area spectral efficiency; AREA SPECTRAL EFFICIENCY; SYSTEMS; HETNETS;

D O I：

10.1109/TVT.2018.2797047

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Millimeter wave (nmWave) small-cell networks can provide high regional throughput, but the backhaul requirement has become a performance bottleneck. This paper proposes a hybrid system that combines traditional backhaul-connected small base stations (SBSs) and cache enabled SBSs to achieve the maximum area spectral efficiency (ASE) while saving backhaul consumption in mmWave small cell networks. We derive and compare the ASE results for both the traditional and hybrid networks, and also show that the optimal content placement to maximize ASE is to cache the most popular contents. Numerical results demonstrate the performance improvement of deploying cache-enabled SBSs. Furthermore, given a total caching capacity, it is revealed that there is a tradeoff between the cache-enabled SBSs density and individual cache size to maximize the ASE.

引用

页码：6695 / 6699

页数：5

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