基于Femto-Macro的异构网络能效性能分析

Energy Efficiency Analysis of Heterogeneous Networks based on Femto-Macro

增加无线网络容量同时减少网络的能耗,是当前无线通信发展的关键。于是,在发展绿色通信前提下,分析了基于Macro-Femto双层异构网络系统的覆盖性能和能效性能,给出了系统覆盖性能的精确表达式,然后在基于一定的覆盖性能前提下推导了异构网络能效的表达式,并讨论了Femto BS数量与能效之间的关系。研究表明,在一定范围内,随着Femto数量的增加,系统能效大幅提升;当Femto数量增加到一定时,由于干扰增加,系统能效将有所下降。

The key to the development of wireless communication is to increase the capacity of wireless network while reducing the energy consumption of the network. For this, under the premise of developing green communication, the coverage and energy-efficiency performance of heterogeneous network system based on Macro-Femto is analyzed, and the exact expression of system coverage performance is given, then under the premise of certain coverage performance, the expression of energy efficiency for heterogeneous network is derived, and the relationship of between the quantity of Femto BS and energy efficiency is discussed. The experiment results indicate that within a certain range, the energy efficiency of the system would be greatly improved with Femte increase of the Femte number. When the Femte number increases to a certain extent, the energy efficiency of the system would decrease due to the increase of interference.