Research On The Technologies Of Interference Management In Stochastic Wireless Networks

With the development of wireless communication technologies and the popularization of intelligent terminals,the demand of people for information becomes more and more.Nowadays,the rise of multimedia services and mobile social networks brings huge amount of data traffic.It is predicted that the wireless traffic will increase by 1000 times in 2020,compared to that in 2010.However,the wireless spectrum resources are limited.Therefore,how to improve the spectrum utilization and further enhance the network capacity has become a hot topic in the present research.Considering that future networks are densely deployed,this will inevitably lead to serious interference problems.In this context,interference management technologies emerge.As a key technology in the future 5G network,interference management technologies provide a way to improve the utilization of spectrum.In this paper,by using random geometry,Markov process and other related mathematical tools,and introducing an interference suppression region,we study the interference management technologies in stochastic wireless networks and cache-enabled networks under dynamic traffic.Firstly,in view of the problem of large interference in stochastic wireless networks,considering the factor that nodes without data packets to transmit do not generate the interference signal under dynamic traffic,an interference suppression mechanism based on interference suppression region is proposed.by theoretically analyzing the idle probability of Access Point(AP)and the packet loss rate,this paper gets the improvement of transmission reliability and spectrum efficiency brought by the interference suppression mechanism.The correctness of the theoretical analysis is verified by the comparison of the numerical results and the simulation results.Secondly,in view of the stochastic cache-enabled network,this paper considers the change of network topology brought by caching mechanism,and proposes an interference management method based on the diversity of content to eliminate the interference and enhance the signal intensity.Through the calculation and analysis of the active probability of AP and the effective content capacity,this paper obtains the enhancement of the signalto-interference-plus-noise ratio brought by the interference management scheme with the content diversity.By comparing the numerical results and simulation results,we verify the correctness of the theoretical analysis.When the ratio of User Equipment(UE)is40%,the effective content capacity of the system can be increased by 25%.