随机等价在多层异构无线网络中的分析

Analysis of the stochastic equivalence in the heterogeneous wireless network

利用随机几何,从干扰总量等价的意义上,将多层异构无线网络等价为单层网络,从而方便了多层网络的性能分析.随机等价包括两方面,一是在节点密度固定的条件下,将网络等价为一个具有均匀发送功率的单层网络;另一种等价是在节点功率固定的前提下,将多层网络等价为一个特定密度的单层网络.利用随机等价,能够将已有的一些基于单层网络的研究成果推广到多层网络,从而简化多层网络的性能分析,以适应未来日趋异构化的网络发展趋势.该文给出了多层混合网络中的串行干扰消除分析,和异构混合网络中的信干比的元分布分析.

Using stochastic geometry,the heterogeneous network(HetNet)can be equivalent to a single-tier network in the meaning of equivalent aggregate interference in order to facilitate the analysis on the performance of the HetNet.The equivalence can include the power equivalence and intensity equivalence.With the power equivalence,a HetNet can be regarded as a single-tier network with homogeneous power nodes of a fixed intensity.With the intensity equivalence,a HetNet can be regarded as a single-tier nodes network with a certain power and a certain intensity.Based on the equivalence,the analysis in the single-tier network can be used to facilitate the analysis in HetNets in the future wireless networks.In this paper,we analyzed how the successive interference cancellation affects the HetNet performance,and the signal-interference-ratio meta distribution in HetNets using the stochastic equivalence.