This paper proposes a joint resource allocation scheme. Joint spectrum allocation of Macrocell and Femtocells is introduced based on a dynamic heuristic clustering algorithm, which effectively mitigates cross-tier interference. An optimization problem is then formed to minimize the total power consumption of
FAPs under the QoS constraint both at each Femto user and each Macro user. A closed form of optimized power solution of FAP is derived to solve an optimization problem with a sub-gradient method. Simulation results show that the system interference and outrage of Femtocells are drastically decreased with the proposed algorithm, and therefore energy efficiency of Femtocells is enhanced.
XU Yue, ZHU Qi
. A joint Macrocell and Femtocell Resource Allocation Based on Interference Management[J]. Journal of Applied Sciences, 2014
, 32(5)
: 493
-498
.
DOI: 10.3969/j.issn.0255-8297.2014.05.010
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