Journal
IEEE ACCESS
Volume 6, Issue -, Pages 42004-42013Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2018.2856627
Keywords
Heterogeneous networks; OFDMA; full-duplex communications; resource allocation; price mechanism
Categories
Funding
- National Natural Science Foundation of China [61502162, 61702175, 61772184, 61772401]
- Fund of State Key Laboratory of Geoinformation Engineering [SKLGIE2016-M-4-2]
- Hunan Natural Science Foundation of China [2018JJ2059]
- Open Fund of State Key Laboratory of Integrated Services Networks [ISN17-14]
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In this paper, we investigate the problem of resource allocation and cross-tier interference mitigation in full-duplex orthogonal frequency division multiple access -based heterogeneous networks consisting of macrocell and underlaying femtocells. First, we design a price mechanism to maximize the utility of both macro base station and femtocell base stations under finite interference constraint. We then propose a triple optimization strategy for power control, subcarrier allocation, and price regulation to mitigate the cross-tier interference. For the macrocell, the barrier method is proposed to implement the price-based resource allocation and ensure the utility maximization. For the femtocells, we propose a Lagrangian optimization algorithm based on KKT conditions to solve the power control and subcarrier allocation, in which a closed-form solution is derived to tackle the dual multiplier problem. Simulation results demonstrate that the resource allocation algorithm can effectively neutralize the cross-tier interference and maximize the utility of the heterogeneous macrocell-femtocell networks.
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