Enhancing cell-edge performance: a downlink dynamic interference avoidance scheme with inter-cell coordination

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...

• Type: Journal
• Year: 2010
• Where: TWC
• Authors: Mahmudur Rahman, Halim Yanikomeroglu
• Keywords: Artificial Intelligence, Inter-cell Interference, Reuse, Throughput, TWC 2010