Research On The Performance Of Hybrid Access Network Based On Two Service State Queuing Model

With the popularity of portable intelligent electronic devices,mobile users want to access the Internet at any time and any place,so the demand for hybrid access network is growing.In order to analyze and optimize the performance of hybrid access network,this paper considers infinite capacity,limited capacity and signal interference respectively,and carries out mathematical modeling,performance evaluation and system optimization for hybrid access network.Firstly,a two service state queuing model is established for unlimited capacity.The matrix geometric solution method is used to analyze the model,and the steady-state analysis results of the model are given.According to the "revenue expenditure" structure,the expected revenue function is established from the perspective of mobile users and hybrid access network respectively,revealing the internal relationship between Nash equilibrium and the optimal probability of social entry,and giving the optimal access cost scheme of hybrid access network.Secondly,based on the limited capacity,a two service state queuing model with limited number of packets is established.The Gauss Seidel method is used to analyze the model,and the steady-state analysis results are given.The expressions of the average stay time of mobile users' packets and the blocking rate of hybrid access network are obtained.The cost function is established based on different performance indexes,and the optimal setting scheme of cache capacity for hybrid access network is given.Then,considering the limited capacity and signal interference,a two service state queuing model with negative customers is established.Gauss Seidel method is used to analyze the model.The steady-state analysis results of the model are given.The expressions of the average stay time of mobile users' packets,the blocking rate and throughput of hybrid access network are obtained.Based on the average stay time and throughput,a cost function is constructed to optimize the buffer capacity of the hybrid access network.Finally,numerical experiments are carried out for the theoretical results of system evaluation,and simulation experiments are carried out for hybrid access networks in different situations to verify the rationality of model establishment,model analysis and system optimization,so as to provide theoretical basis for the design,deployment and optimization of hybrid access networks.