Research On Access Threshold Of Mobile Users In Hybrid Access Network With Different Information Accuracy

With the popularity of electronic equipment,people have more and more strong demand for access to the network in public places.The common way for mobile users to access the Internet is to alternately use cellular network and Wi Fi(wireless local area network),that is,hybrid access network.In the discrete time domain,considering the different information accuracy of mobile users,the threshold strategy of hybrid access network is studied,which provides the basis for operators to reasonably deploy access network.Firstly,when the mobile user is informed of the workload in the system cache and the connection state of the hybrid access network,that is,when the mobile user has complete information,the threshold strategy of the mobile user is studied.By using iterative method and diagonalization method,the closed solution of the sojourn time of mobile users in different network states is given,and the existence of Nash equilibrium is proved and the individual optimal access threshold strategy is obtained.In this paper,a queuing game model with two-stage alternative service is established,and the stable distribution of the model is solved by using the iterative method to obtain the social optimal access threshold strategy.Secondly,in the case that mobile users are only informed of the workload in the system cache,but do not know the connection state of the hybrid access network,that is,mobile users master part of the information,the threshold strategy of mobile users is studied.By using iterative method and diagonalization method,the expression of the sojourn time of mobile users is obtained.By building a queuing game model with limited capacity,the optimal access threshold strategy of individuals is obtained.Based on the individual optimal access threshold,a two-dimensional Markov chain is constructed to obtain the social optimal access threshold strategy.Thirdly,in the case that mobile users are only informed of the connection state of hybrid access network,but do not know the workload of the system,that is,mobile users master part of the information,the threshold strategy of mobile users is studied.In the discrete time domain,a queuing game model with infinite capacity is established,and the stable distribution of the system is solved by using the matrix geometric solution.Based on the income expenditure structure,the income function is constructed to solve the individual optimal access threshold policy and social optimal access threshold policy of mobile users in different network connection states.Finally,system experiments are carried out to reveal the relationship between individual optimal access threshold and social optimal access threshold.The experimental results show that the individual optimal access threshold is always higher than the social optimal access threshold.In order to reduce the gap between the individual optimal access threshold and the social optimal access threshold,mobile users are encouraged to use the social optimal access threshold strategy,and additional unit time detention fee measures are taken to maximize social benefits.