期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2014
卷号：6
期号：5
页码：109
DOI：10.5121/ijwmn.2014.6509
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：This paper demonstrates the concept of using Heterogeneous networks (HetNets) to improve Long TermEvolution (LTE) system by introducing the LTE Advance (LTE-A). The type of HetNets that has beenchosen for this study is Macro with Pico cells. Comparing the system performance with and without Picocells has clearly illustrated using three well-known scheduling algorithms (Proportional Fair PF,Maximum Largest Weighted Delay First MLWDF and Exponential/Proportional Fair EXP/PF). The systemis judged based on throughput, Packet Loss Ratio PLR, delay and fairness.. A simulation platform calledLTE-Sim has been used to collect the data and produce the paper’s outcomes and graphs. The results provethat adding Pico cells enhances the overall system performance. From the simulation outcomes, the overallsystem performance is as follows: throughput is duplicated or tripled based on the number of users, thePLR is almost quartered, the delay is nearly reduced ten times (PF case) and changed to be a half(MLWDF/EXP cases), and the fairness stays closer to value of 1. It is considered an efficient and costeffective way to increase the throughput, coverage and reduce the latency.
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