Optimal Base Station Density of Power Efficient Small Cell Networks

• Main Authors: Peng, Ching-Ting, 彭敬庭
• Other Authors: Wang, Li-Chun
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/17186659983710339063

碩士 === 國立交通大學 === 電信工程研究所 === 102 === 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.