Energy Efficiency Optimization in LTE-U Based Small Cell Networks
Energy Efficiency Optimization in LTE-U Based Small Cell Networks
复制标题
基于 LTE-U 的小型蜂窝网络的能效优化
DOI:
10.1109/tvt.2018.2886558
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发表时间:
2019-02
影响因子:
6.8
通讯作者:
Yuen Chau
中科院分区:
文献类型:
--
作者:
Yin Rui;Zhang Yunfeng;Dong Fang;Wang Anding;Yuen Chau
In this correspondence, an energy efficient (EE) optimization scheme is proposed for the LTE-unlicensed (LTE-U) based small cell networks. The small cell reuses the licensed bands with the macro base station and shares the unlicensed bands with multiple Wi-Fi access points. Therefore, there exists co-channel interference on licensed bands, and the collision on unlicensed bands. To maximize the system EE while guaranteeing the harmonious coexistence with macro cell and Wi-Fi networks, spectrum (both licensed and unlicensed) and power allocation are jointly considered to formulate a non-convex optimization problem. Accordingly, convex approximation and the classic Dinkelbach method are applied to derive the optimal scheme. Based on the proposed scheme, the interaction between the EE on licensed and unlicensed bands are revealed, and the performance of the scheme is verified via the simulation.
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