标题: | 高功率效率小细胞网路的最佳基地台密度之研究 Optimal Base Station Density of Power Efficient Small Cell Networks |
作者: | 彭敬庭 Peng, Ching-Ting 王莅君 Wang, Li-Chun 电信工程研究所 |
关键字: | 能源效率;功率效率;基地台密度;卜松点分布;随机几何;小细胞网路;用户传输速率;细胞传输速率;小细胞启动关闭技术;energy efficiency;power efficiency;base station density;Poisson point process;stochastic geometry;small cell network;user rate;cell rate;small cell on/off |
公开日期: | 2013 |
摘要: | 基地台布建位置最佳化在各个世代的蜂巢式网路中一直是一个重要的问题。传统评估蜂巢式网路效能的方法牵涉到大规模的系统模拟。在此篇论文中,我们利用随机几何理论,从功率效率的观点研究单层的小细胞网路。我们推导出了平均用户传输速率与功率效率,并且证实了最大化功率效率的基地台密度是存在的。分析与模拟的结果都指出使用启动关闭技术的小细胞网路的功率效率显着地优于全部基地台都启动的小细胞网路。另外,数值结果显示平均用户传输速率与功率效率会受到通道衰退效应的影响,但最佳基地台密度却不易因通道衰退效应而改变。我们所找到的最佳基地台密度对每单位面积要布建多少基地台才能提升功率效率提出洞见。 How to optimally deploy base stations (BSs) in a given area is a long-standing and important problem in each generation of cellular networks. Classical approaches for performance evaluation of cellular networks involves extensive system simulations. In this thesis, using stochastic geometry theory, the optimal BS density of a small cell network with one tier is investigated from a power efficient point of view. The average user rate and the power efficiency for the all-on and on-off power management schemes are derived and the existence of the optimal BS density maximizing the power efficiency for a given user density is verified. Both analytical and simulated results indicate that the on-off power management scheme is significantly superior to the all-on power scheme in terms of power efficiency. In addition, numerical results show that the average user rate and the power efficiency depend on fading conditions, while the optimal BS density is not sensitive to the severity of fading. The optimal BS densities for the two power management scheme provide a good insight on the guideline of how many BSs per unit area should be actively operated or deployed for achieving high power efficiency. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT070160207 http://hdl.handle.net/11536/75474 |
显示于类别: | Thesis |