Coordinated fractional frequency reuse
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Analysis and performance evaluation of the OFDM-based metropolitan area network IEEE 802.16
Computer Networks: The International Journal of Computer and Telecommunications Networking - Selected papers from the European wireless 2004 conference
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The WiMAX (IEEE 802.16e-2005) standard supports fractional frequency reuse concept. To implement this idea, the WiMAX standard has proposed the concept of zones where different frequency reuse factors (FRFs) are employed. Here, each cell/cluster operates with multiple zones where different FRFs are used. The zone of operation for each user can be either permanently fixed or determined dynamically. The dynamic assignment of the zone can potentially utilize the bandwidth efficiently and improve the system throughput. Dynamic zone selection schemes based on the two metrics namely radio distance and bandwidth efficiency are proposed in this paper. The impact of the dynamic zone selection scheme on throughput is studied and compared with the fixed reuse zone schemes.