The Impact of Fractional Frequency Reuse on Femtocell Resource allocation in multi-cell LTE networks
Date Issued
2010
Date
2010
Author(s)
Ho, Tsung-Yen
Abstract
Femtocells have been recently proposed as a potential good solution to increase not only indoor radio coverage, but also system capacity. However, the interference problem driven by femtocells should been paid more attention to. There are two common methods to solve interference problem such as power control methods and channel allocation methods. OFDMA systems like LTE and WiMAX can assignment different subcarriers to subscribers which make them in a good potential in using channel allocation method to solve the interference problem.
However, interference in multi-cell system is much more complex than that in a single cell system and fewer related work discuss interference problem in a multi-cell system. The methods the proposed are good for single cell but will cause the coverage and cell-edge performance of macrocell down to a low level and new method should be proposed.
In this work, we analyze the impact of Fractional Frequency Reuse on femtocell resource allocation, and then propose a new channel allocation method for femtocells and macrocells to work in multi-cell system without causing poor performance on cell-edge MSs and macorcell coverage.
Subjects
Femtocell
H(e)NB
LTE
mobile communication network
FFR
Type
thesis
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