Optimization in quality of service for lte network using bandwidth expansion



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OPTIMIZATION IN QUALITY OF SERVICE FOR LTE NETWORK



SINERGI
Vol. 23, No. 1, February 2019: 47-54 
http://mercubuana.ac.id/index.php/sinergi 
http://doi.org/10.22441/sinergi.2019.1.007 
.
F. Sirait et al., Enhancement of LTE Network Performance by Congestion Control Management
47 
OPTIMIZATION IN QUALITY OF SERVICE FOR LTE NETWORK
USING BANDWIDTH EXPANSION
 
Fadli Sirait, Akhmad Wahyu Dani, Yuliza Yuliza, Ulil Albab
Department of Electrical Engineering, Universitas Mercu Buana 
Jl. Raya Meruya Selatan, Kembangan, Jakarta 11650
Email: fadli.sirait@mercubuana.ac.id wahyu.dani@mercubuana.ac.id
yuliza@mercubuana.ac.id ulilalbab@gmail.com 
Abstract -- QoS (Quality of Service) of LTE networks can bring the providers to provide broadband 
services with high performance to end user. Furthermore, the expected data rate transfer is up to 300 
Mbit/s per user while the range of bandwidth varies from 1.4 MHz to 20 MHz. The network worked in 
1800 MHz bands, 64 QAM modulation technique and used 10 MHz and 15 MHz channel bandwidth.
There is a congestion problem for LTE network with 10 MHz channel bandwidth due to high utilization.
The paper tries to analyze the QoS parameters, named Key Performance Indicators (KPI) for LTE 
Networks to solve the problem using bandwidth expansion. The KPIs parameter that is measured by 
drive test is accessibility, retainability, PRB downlink utilization, and user number. Based on the KPIs 
measurements results, it is showed that the proposed method to expand the bandwidth from 10 MHz to 
15 MHz can avoid congestion problem and impact on improving the performance of LTE network.
 
 
Keywords: LTE; MIMO; QoS; Congestion; Utilization; Peak Data Rate 
 
Received: September 27, 2019

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