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A Self-Organized Frequency Allocation for Interference Avoidance in Femto-cell Systems
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 Title & Authors
A Self-Organized Frequency Allocation for Interference Avoidance in Femto-cell Systems
Lee, Ho-Seog; Nam, Ji-Hee; Hwang, Sung-Ho; Cho, Ho-Shin;
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In this paper, we propose a self-organized frequency allocation scheme for femto-cell deployment to avoid intercell interference, thereby reducing cell-registration failure. The proposed scheme follows two steps which if necessary manipulate frequency-band reallocation of existing femto-cells to accomodate newly incoming femto-cells. In the first step named "initial frequency allocation", each femto-cell collects neighboring femto-cells' frequency usage state by listening the broadcasting channels, and then selects one of interference-free frequency-bands. If no inference-free band is available, the second step named "frequency adjustment" starts, where frequency-band reallocation is properly performed from the aspect of overall performance improvement. Numerical results shows that the proposed scheme outperforms the best SINR scheme, which has been practically applied to femto-cell deployment, in terms of cell-registration failure probability and system overhead.
Femto-cell;Interference;Frequency allocation;Self-Organization;
 Cited by
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