DMCA
Enhancing cell-edge performance: A downlink dynamic interference avoidance scheme with inter-cell coordination (2010)
| Venue: | IEEE Transactions on Wireless Communications |
| Citations: | 38 - 3 self |
BibTeX
@ARTICLE{Rahman10enhancingcell-edge,
author = {Mahmudur Rahman and Student Member and Halim Yanikomeroglu},
title = {Enhancing cell-edge performance: A downlink dynamic interference avoidance scheme with inter-cell coordination},
journal = {IEEE Transactions on Wireless Communications},
year = {2010},
pages = {1414--1425}
}
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Abstract
Abstract—Interference management has been a key concept for designing future high data-rate wireless systems that are required to employ dense reuse of spectrum. Static or semistatic interference coordination based schemes provide enhanced cell-edge performance but with severe penalty to the overall cell throughput. Furthermore, static resource planning makes these schemes unsuitable for applications in which frequency planning is difficult, such as femtocell networks. In this paper, we present a novel dynamic interference avoidance scheme that makes use of inter-cell coordination in order to prevent excessive inter-cell interference, especially for cell or sector edge users that are most affected by inter-cell interference, with minimal or no impact on the network throughput. The proposed scheme is comprised of a two-level algorithm- one at the base station level and the other at a central controller to which a group of neighboring base stations are connected. Simulation results show that the proposed scheme outperforms the reference schemes, in which either coordination is not employed (reuse of 1) or employed in a static manner (reuse of 3 and fractional frequency reuse), in terms of cell edge throughput with a minimal impact on the network throughput and with some increase in complexity. Index Terms—OFDMA resource allocation, interference avoidance, resource optimization, inter-cell coordination.
Keyphrases
inter-cell coordination cell-edge performance downlink dynamic interference avoidance scheme network throughput femtocell network static manner frequency planning semistatic interference coordination overall cell throughput minimal impact enhanced cell-edge performance base station level index term ofdma resource allocation excessive inter-cell interference static resource planning abstract interference management resource optimization reference scheme novel dynamic interference avoidance scheme inter-cell interference base station key concept dense reuse future high data-rate wireless system central controller interference avoidance simulation result proposed scheme sector edge user two-level algorithm severe penalty cell edge throughput fractional frequency reuse
