Interference coordination and cancellation for 4G networks
IEEE Communications Magazine
Performance evaluation of frequency planning schemes in OFDMA-based networks
IEEE Transactions on Wireless Communications - Part 1
Dynamic frequency allocation of femtocells for guaranteed macrocell throughput in OFDMA networks
Proceedings of the 6th International Conference on Ubiquitous Information Management and Communication
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In this paper, we propose a dynamic fractional frequency reuse (DFFR) scheme, which is based on a interference avoidance request (IAR) mechanism, to suppress the inter-cell interference (ICI) for downlink OFDMA cellular networks. The key idea of the proposed scheme is that base stations (BSs) exchange IAR messages among each other, and then dynamically control the transmit power according to their received IAR messages. For the elastic data traffic, we combine the IAR mechanism with proportional fairness (PF) scheduling algorithm, to achieve good performances of both total cell throughput and cell edge user (CEU) throughput. Extensive system level simulations show that the proposed DFFR scheme outperforms the reference frequency reuse schemes in terms of the total cell throughput and CEU throughput. Furthermore, the proposed DFFR scheme requires no centralized controller, and the exchanged information among BSs is very little.