Femtocell performance studies for LTE

Thumbnail Image

URL

Journal Title

Journal ISSN

Volume Title

School of Electrical Engineering | Master's thesis
Checking the digitized thesis and permission for publishing
Instructions for the author

Authors

Date

2011

Department

Tietoliikenne- ja tietoverkkotekniikan laitos

Major/Subject

Tietoverkkotekniikka

Mcode

S-38

Degree programme

Language

en

Pages

x + 61

Series

Abstract

In December 2004, the 3<sup>rd</sup> Generation Partnership Project (3GPP) launched the study item on the Universal Terrestrial Radio Access network (UTRAN) Long Term Evolution (LTE) to achieve a high-data-rate, low-latency and packet-optimized radio access technology. LTE is the label mark for the 4<sup>th</sup> Generation (4G) mobile system. In this thesis, a novel method of constructing femtocell and macrocell network under LTE standard is studied, providing an overview of LTE system architecture, radio access technology and radio resource management methods with femtocell concept involved. This thesis discusses the positive and negative effect of using femtocell in LTE, specifically, interference mitigation methods are provided for both co-layer and cross-layer networks. Scheduling and power control (PC) is crucial for mitigating interference between femtocell and macrocell as well as increasing system capacity in both uplink (UL) and downlink (DL). Based on the simulator provided by supervisor, an overall configuration and performance evaluation of the LTE PC in Macro cell with Femtocell Base Station (FBS) deployment scenarios is tested with different PC parameter settings. This work applies Fractional Power Control (FPC) and Frequency-Domain Scheduling (SFDS) scheme, which can separate the spectrum usage from FUEs and MUEs in a probabilistic manner. The simulation result proves that SFDS can significantly mitigate the strong interference from Macrocell User Equipment (MUE) in UL and FBS in DL. Traditional literature and the most recent publications were drawn on as a source of information.

Description

Supervisor

Hämäläinen, Jyri

Thesis advisor

Zheng, Zhong

Keywords

LTE, femtocell, power control, SFDS

Other note

Citation

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-2020122358240

Collections

[dipl] Sähkötekniikan korkeakoulu / ELEC