De-Centralized Dynamic ICIC Using X2 Interfaces for Downlink LTE Systems

Author

Kimura, Dai ; Harada, Yuya ; Seki, Hiroyuki

Author_Institution

Fujitsu Labs. Ltd., Yokosuka, Japan

fYear

2011

fDate

15-18 May 2011

Firstpage

1

Lastpage

5

Abstract

A novel de-centralized dynamic inter-cell interference coordination (ICIC) method, which can change cell-edge bands dynamically by using an X2 interface and can be applied to current downlink long-term evolution (LTE) systems, is proposed. This dynamic ICIC method can autonomously optimize fractional frequency reuse (FFR) parameters and thus increase throughput. In addition, it works well even in the presence of control delays in time-variable environments. Static and dynamic system-level simulation (SLS) demonstrated that the throughput achieved by the proposed method is superior to that of conventional FFR methods.

Keywords

Long Term Evolution; frequency allocation; interference suppression; optimisation; FFR methods; X2 interfaces; decentralized method; downlink LTE systems; dynamic ICIC method; fractional frequency reuse; intercell interference coordination; long-term evolution; optimization; system-level simulation; throughput; Base stations; Delay; Downlink; Interference; OFDM; Signal to noise ratio; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Conference_Location

Budapest

ISSN

1550-2252

Print_ISBN

978-1-4244-8332-7

Type

conf

DOI

10.1109/VETECS.2011.5956164

Filename

5956164