$Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement$

Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement

The introduction of low-power and small-service-area Femtocell into Long Term Evolution-Advance (LTE-A) Macrocell network, the service coverage is extended but causes more severe inter-cell interference (ICI). ICI occurs due to sharing of resource between adjacent cells. Among the methods to mitiga...

Full description

Saved in:

Bibliographic Details
Format:	Thesis
Language:	English
Subjects:	Femtocells Long-Term Evolution (Telecommunications) Wireless communication systems Wireless connections Mobile cellular network
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/3/Lim%20Jing%20Huey.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-unimap-78040
record_format	uketd_dc
spelling	my-unimap-780402023-03-07T02:29:31Z Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement R. Badlishah, Ahmad, Prof. Dr. The introduction of low-power and small-service-area Femtocell into Long Term Evolution-Advance (LTE-A) Macrocell network, the service coverage is extended but causes more severe inter-cell interference (ICI). ICI occurs due to sharing of resource between adjacent cells. Among the methods to mitigate interference, power and frequency allocation schemes are deployed in this thesis. Fractional Frequency Reuse (FFR) is one of the ICI technique for signal quality enhancement. The challenges of FFR is to design an efficient resource allocation scheme. With FFR, spectrum sharing between Macrocell and Femtocell network causes unavailability of dedicated resource and thus more severe ICI occurs. Furthermore, when solely power control scheme is used, universal frequency reuse (FRF=1) causes more severe ICI problem in crowded network. The modeling of downlink LTE-A Heterogeneous network (HetNet) is done using MATLAB in this research. The FFR method is revisited and Orthogonal Resource Allocation (ORA) scheme is proposed to allocate resource by region. Besides, the suggested Dynamic Femtocell Resource Allocation (DFRA) scheme is deployed to ensure the resources assigned to Femtocells are mutually exclusive with adjacent Macrousers or Femtocells. In the scenario of high density Femtocells (orthogonal resource exhausted), the power control schemes such as Power based Femtocell Base Station Power Control (PPC) and SINR based Femtocell Base Station Power Control (SPC) are combined into the system. The power of Femtocell Base station is further optimized with the proposed SINR based Neighbouring Femtocell Power Control (SNPC) scheme to take care of interference between Femtocells. In comparison with the deployment of contemporary FFR approach in HetNet, the deployment of Dynamic Frequency Allocation-Power based Femtocell Base Station Power Control (DFRA-PPC) and Dynamic Frequency Allocation-Signal to Interference & Noise Ratio (SINR) based Femtocell Base Station Power Control (DFRA-SPC) approach increases the resource utilization and number of active user by 8.7% and 8.72% respectively in sparsely populated Femtocells. Apart from this, data rate is augmented by 15.73% and 15.51% with the improvement done in DFRA-PPC and DFRA-SPC mechanisms. From the perspective of spectral efficiency, these two techniques enhanced the performance by 15.68% and 15.48% correspondingly. On the other hand, in congested network (with 150 randomly located Femtocells), the resource utilization and number of active user grows by 11.43% for Dynamic Frequency Allocation-SINR based Femtocell Base Station Power Control-SINR based Neighbouring Femtocell Power Control (DFRASPC- SNPC) scheme. Besides, by deploying this scheme, the data rate and spectral efficiency in this congested network are improved by 13.52% and 13.53% respectively. The proposed mechanisms ORA, DFRA, SPC, PPC and SNPC improved the system performance in terms of resource utilization, subcarrier efficiency, data rate and spectral efficiency. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78040 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/1/Page%201-24.pdf e8289b88a7ceda78ececd7ffb480d504 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/2/Full%20text.pdf cab799f1b214cb177fb623dab145f63d http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/3/Lim%20Jing%20Huey.pdf 9ab4f276614cde46fb7935260eb2d766 Universiti Malaysia Perlis (UniMAP) Femtocells Long-Term Evolution (Telecommunications) Wireless communication systems Wireless connections Mobile cellular network School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	R. Badlishah, Ahmad, Prof. Dr.
topic	Femtocells Long-Term Evolution (Telecommunications) Wireless communication systems Wireless connections Mobile cellular network
spellingShingle	Femtocells Long-Term Evolution (Telecommunications) Wireless communication systems Wireless connections Mobile cellular network Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement
description	The introduction of low-power and small-service-area Femtocell into Long Term Evolution-Advance (LTE-A) Macrocell network, the service coverage is extended but causes more severe inter-cell interference (ICI). ICI occurs due to sharing of resource between adjacent cells. Among the methods to mitigate interference, power and frequency allocation schemes are deployed in this thesis. Fractional Frequency Reuse (FFR) is one of the ICI technique for signal quality enhancement. The challenges of FFR is to design an efficient resource allocation scheme. With FFR, spectrum sharing between Macrocell and Femtocell network causes unavailability of dedicated resource and thus more severe ICI occurs. Furthermore, when solely power control scheme is used, universal frequency reuse (FRF=1) causes more severe ICI problem in crowded network. The modeling of downlink LTE-A Heterogeneous network (HetNet) is done using MATLAB in this research. The FFR method is revisited and Orthogonal Resource Allocation (ORA) scheme is proposed to allocate resource by region. Besides, the suggested Dynamic Femtocell Resource Allocation (DFRA) scheme is deployed to ensure the resources assigned to Femtocells are mutually exclusive with adjacent Macrousers or Femtocells. In the scenario of high density Femtocells (orthogonal resource exhausted), the power control schemes such as Power based Femtocell Base Station Power Control (PPC) and SINR based Femtocell Base Station Power Control (SPC) are combined into the system. The power of Femtocell Base station is further optimized with the proposed SINR based Neighbouring Femtocell Power Control (SNPC) scheme to take care of interference between Femtocells. In comparison with the deployment of contemporary FFR approach in HetNet, the deployment of Dynamic Frequency Allocation-Power based Femtocell Base Station Power Control (DFRA-PPC) and Dynamic Frequency Allocation-Signal to Interference & Noise Ratio (SINR) based Femtocell Base Station Power Control (DFRA-SPC) approach increases the resource utilization and number of active user by 8.7% and 8.72% respectively in sparsely populated Femtocells. Apart from this, data rate is augmented by 15.73% and 15.51% with the improvement done in DFRA-PPC and DFRA-SPC mechanisms. From the perspective of spectral efficiency, these two techniques enhanced the performance by 15.68% and 15.48% correspondingly. On the other hand, in congested network (with 150 randomly located Femtocells), the resource utilization and number of active user grows by 11.43% for Dynamic Frequency Allocation-SINR based Femtocell Base Station Power Control-SINR based Neighbouring Femtocell Power Control (DFRASPC- SNPC) scheme. Besides, by deploying this scheme, the data rate and spectral efficiency in this congested network are improved by 13.52% and 13.53% respectively. The proposed mechanisms ORA, DFRA, SPC, PPC and SNPC improved the system performance in terms of resource utilization, subcarrier efficiency, data rate and spectral efficiency.
format	Thesis
title	Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement
title_short	Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement
title_full	Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement
title_fullStr	Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement
title_full_unstemmed	Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement
title_sort	femtocell and fractional frequency reuse (ffr) for lte network performance enhancement
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78040/3/Lim%20Jing%20Huey.pdf
_version_	1776104282048692224

Femtocell and fractional frequency reuse (FFR) for LTE network performance enhancement

Similar Items