Performance optimization of fractional frequency reuse in Long Term Evolution (LTE) systems using Cuckoo Search algorithm

2016 ◽  
Author(s):  
Eman S. Abushabab ◽  
Majid Khodier ◽  
Shereen S. Ismail
Keyword(s):  
Performance Optimization ◽  
Search Algorithm ◽  
Cuckoo Search ◽  
Long Term Evolution ◽  
Cuckoo Search Algorithm ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Fractional Frequency ◽  
Term Evolution

Selecting the Optimal Fractional Frequency Reuse Scheme in Long Term Evolution Networks

2013 ◽  
Vol 71 (4) ◽  
pp. 2693-2712 ◽  
Author(s):  
Dimitrios Bilios ◽  
Christos Bouras ◽  
Vasileios Kokkinos ◽  
Andreas Papazois ◽  
Georgia Tseliou
Keyword(s):  
Long Term Evolution ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Fractional Frequency ◽  
Term Evolution

scholarly journals Interference Avoidance Using Dynamic Frequency Reuse For LTE-A System

2018 ◽  
Vol 7 (3.7) ◽  
pp. 1
Author(s):  
Asif Reza ◽  
Md Rafiqul Islam ◽  
Khaizuran Bin Abdullah ◽  
Farah Raisa
Keyword(s):  
Long Term Evolution ◽  
Base Station ◽  
Simulation Software ◽  
Frequency Reuse ◽  
System Capacity ◽  
Fractional Frequency Reuse ◽  
Cell Edge ◽  
Term Evolution ◽  
Dynamic Frequency

To meet the increasing demand for spectrum in communication system, Long Term Evolution (LTE) system has been proposed. It allowed users to use a new and much wider spectrum comparing to the other previous technologies. To utilize the full capacity of the LTE system Frequency Reuse (FR) has been adapted. It is a promising aspect of transmission of high rate data stream with better system capacity and fading immunity in the modern Long-Term Evolution-Advanced (LTE-A) system. Fractional Frequency Reuse (FFR) is the commonly used frequency reuse technique to increase the system capacity. But the problem is, with introduction of FR, it also increases the Inter Cell Interference (ICI) of the system. The out of cell interference coming from the neighbouring e-NodeBs (eNB) as a result of using the same frequency band and they act as an interference source. This ICI decreases the system capacity, resulting in hampering of communication, browsing and in worst case no connection at all. This condition highly affects the users under a cell specially those who are located in the cell edge areas. To take care of this issue an approach called Dynamic Frequency Reuse scheme has been proposed in this paper to mitigate the interference thus increasing the system capacity. This scheme uses continuous assessment of resource allocation and choosing the best sub-band for the user with least interference. There is a sequential order to be maintained for the users with using off minimum Base Station (BS) transmit power. The cell edge area users are the primary concern in terms of increasing their service quality. MATLAB simulation software has been used to justify the theory that the proposed scheme is capable increase the capacity of the cell edge areas as well as the cell centre area user. The results achieved from the simulation also indicates that the proposed model can enhance the system capacity comparing to the existing FFR scheme.     

scholarly journals IMPACTO DEL REUSO DE FRECUENCIA FRACCIONAL EN LA REDUCCIÓN DE INTERFERENCIA INTERCELDA EN LTE.

2014 ◽  
Vol 25 (1) ◽  
pp. 28-39
Author(s):  
Betty Nayibe Fernández Campo ◽  
Lesly Alejandra González Camacho ◽  
Claudia Milena Hernández Bonilla
Keyword(s):  
Density Function ◽  
Long Term Evolution ◽  
Frequency Reuse ◽  
Band Width ◽  
Fractional Frequency Reuse ◽  
Cumulative Density Function ◽  
Interference Coordination ◽  
Term Evolution ◽  
Inter Cell Interference

La Interferencia Inter-Celda (ICI, Inter-Cell Interference) es un problema que desafía el desempeño de las redes Evolución a Largo Término (LTE, Long Term Evolution), sin embargo existen técnicas de Coordinación de Interferencia Inter-Celda (ICIC, Inter-Cell Interference Coordination) como el Reuso de Frecuencia Fraccional (FFR, Fractional Frequency Reuse) que permiten mitigar dicha interferencia y mejorar el desempeño de los Equipos de Usuario (UE, User Equipment), especialmente aquellos terminales situados en el borde de la celda. Este artículo analiza el desempeño de la técnica Reuso de Frecuencia Fraccional (FFR) en LTE, en función de dos parámetros de configuración: Umbral de Relación Señal a Ruido más Interferencia (SINR, Signal to Interference plus Noise Ratio) y partición de Ancho de Banda (BW, Band Width). Se evalúa la capacidad e interferencia mediante diagramas de dispersión, curvas de Función de Probabilidad Acumulada Empírica (ECDF, Empirical Cumulative Density Function) y cálculos estadísticos.

scholarly journals Analisis Dampak Inter-Band Carrier Aggregation pada Perencanaan Jaringan LTE-Advanced

2019 ◽  
Vol 7 (2) ◽  
pp. 363
Author(s):  
ARIF MUBAROK ◽  
HASANAH PUTRI
Keyword(s):  
Long Term Evolution ◽  
Band 3 ◽  
Frequency Reuse ◽  
Carrier Aggregation ◽  
Cell Identity ◽  
Term Evolution ◽  
Lte Advanced ◽  
Soft Frequency Reuse ◽  
Physical Cell Identity

ABSTRAKPenerapan teknologi Long Term Evolution (LTE) di Indonesia belum optimal dalam pengalokasian spektrum dikarenakan keterbatasan spektrum, untuk mengatasi masalah tersebut 3GPP mengeluarkan teknologi terbaru yaitu LTEAdvanced yang mendukung fitur carrier aggregation (CA) yang memberikan throughput yang lebih tinggi dengan penggunaan spektrum yang lebih efisien. Pada penelitian ini dilakukan perencanaan jaringan LTE-Advanced menggunakan metode inter-band CA dengan menggabungkan dua band frequency yang berbeda yaitu bandwith 5 MHz di band 5 (850 MHz) dan bandwidth 10 MHz di band 3 (1800 MHz). Untuk mendapatkan performansi yang maksimal perencanaan jaringan LTE dan LTE-A dikombinasikan dengan penggunaan skema Physical Cell Identity (PCI) dan Soft Frequency Reuse (SFR). Penggunaan PCI meningkatkan SINR sebesar 1 dB dan throughput meningkat sebesar 200 Kbps, sedangkan penggunaan skema SFR meningkatkan SINR sebesar 9 dB dan throughput meningkat sebesar 13 Mbps.Kata kunci: LTE-Advanced, PCI, SFR, Carrier Aggregation. ABSTRACTThe implementation of Long Term Evolution (LTE) technology in Indonesia has not been optimal due to spectrum limitations. To overcome the problem, 3GPP issued the latest technology, i.e. LTE-Advanced, to support the carrier aggregation (CA) feature that provides higher throughput with more efficient spectrum usage. In this study, LTE-Advanced network planning was performed using the inter-band CA method by combining two different band frequencies, namely 5 MHz bandwidth on Band 5 (850 MHz) and 10 MHz bandwidth on Band 3 (1800 MHz). In addition, to generate maximum performance, the LTE and LTEA networks planning was combined with the use of Physical Cell Identity (PCI) and Soft Frequency Reuse (SFR) schemes. The use of the PCI managed to increase SINR by 1 dB and throughput by 200 Kbps, while the use of SFR scheme managed to increase SINR by 9 dB and throughput by 13 Mbps.Keywords: LTE-Advanced, PCI, SFR, Carrier Aggregation.

scholarly journals ANALISA KINERJA LONG TERM EVOLUTION MENGGUNAKAN METODE DYNAMIC SOFT FREQUENCY REUSE

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Zulfikar Nurzain ◽  
Uke Kurniawan Usman ◽  
Hurianti Vidnyaningtyas
Keyword(s):  
Long Term Evolution ◽  
Frequency Reuse ◽  
Term Evolution ◽  
Soft Frequency Reuse

Teknik DSFR memiliki kualitas dan kapasitas throughput yang lebih baik dibandingkan dengan teknik SFR. Rata-rata nilai SINR pada setiap user yang berjumlah 60 user pada DSFR bernilai 9,372 dB sedangkan teknik SFR hanya mendapatkan rata-rata sebesar 1,1973 dB. Untuk rata-rata laju data tiap user dari teknik DSFR mendapatkan 1,0118 Mbps sedangkan untuk SFR hanya mendapatkan nilai 0,6493 Mbps. Tetapi dalam konsumsi daya sel tertinggi, pada teknik SFR hanya mengkonsumsi 17,6 W sedangkan pada teknik DSFR mengkonsumsi sebesar 23,66 W. Dengan teknik DSFR kapasitas throughput naik dan konsumsi daya naik.

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