Modeling And Research Of Spatial Poisson Point Process In UDN Community

Mobile communication technology is definitely one of the most important factors in the progress of human society.From 1G to today's 4G,communication technology has been through a huge evolution from analog to digital,from voice calls to network services,from a low-speed traffic to a high-speed Internet access.Although the access speed of mobile communication is fast at present,with the advent of the AI era in 2016,the rapid development in the field of wireless Internet brings up higher requirements for mobile communication technology.Ultra Dense Network(UDN)is one of the key technologies for the network deployment of 5G mobile communications.In order to further shorten the distance between base station nodes and terminal users,greatly improve the spectrum efficiency of the network,and expand the capacity of the network system,the UDN cell is formed by increasing the density of the existing mobile communication network through adding a large number of low-power base station nodes for the operators' consideration.However,the dramatic increase in the number of these base stations will make the network topology more complicated and irregular,and the interference will become more difficult to analyze and suppress.Therefore,it is of great significance to adopt a new theoretical model for the study of UDN cells.In this paper,spatial Poisson point process which is tractable and more suitable for dense networking scenarios is applied to model UDN cells and do researches.This article deduces the mathematical expressions of network key performance indicators such as coverage probability,network throughput,etc.in the downlink,uplink and frequency reuse stochastic model in the first place.The simulation verifies the accuracy of the modeling method and discusses the impact of parameters such as the density of base station,channel fading index,SINR threshold,and frequency reuse factor on the communication quality.An optimal relationship which guarantees a fine network throughput between the SINR threshold and the frequency reuse factor is derived.The following researches focus on the interference coordination of UDN cells.Considering the significant role of frequency reuse in the interference control of dense cellular networks,random interference coordination and enhanced topology interference coordination as well as a power control strategy of base stations based on stratified time-slots and regions are proposed.Through the simulation analysis of two interference coordination methods,we can see that both are capable of improving the user's performance of receiving SINR,but random interference coordination is not able to improve the edge data rate,while under enhanced topology interference coordination,a certain average data rate can be sacrificed in exchange for the gain of edge data rate.The simulation result of the time-slot and region stratified control strategy reflects its advantages in response accuracy,power consumption control,and downlink coverage probability performance,so that the power of base stations can be semi-adaptively and accurately controlled.At the same time,the interference and the energy consumption of the network can be reduced as well.