Research On Technology Of 5G Resource Allocation Optimization

With the issuance of the first batch of 5G commercial licenses,China officially entered the first year of 5G.Although many emerging technologies of 5G networks such as millimeter wave and ultra-dense network can effectively solve the problems of low spectrum efficiency and slow transmission rate in 4G era.However,with the explosive increase in the number of users and access equipment,under the situation of limited communication resources,providing services to all users at the same time still poses severe challenges for operators.In addition,the quality of user experience is an important performance indicator in the 5G era.By improving the quality of user experience,user satisfaction can be effectively improved and user stickiness will increase.Therefore,it is necessary to optimize network resources based on the user's quality of experience under the condition of limited communication resources and form a user-centric network resource optimization model.This article mainly considers the 5G network scenario,taking the user as the center and adopting different fairness principles in different applications users under different resource conditions,so as to achieve improvement of the users' quality of experience.The dissertation first studies the application-oriented QoE aware radio resource optimization.By introducing the user experience quality prediction function in wireless resource optimization,a QoE aware resource optimization model is established.The existing work does not distinguish between different applications users,and adopts the same fairness principle in resource allocation,which will cause users with high traffic demand to affect the overall user experience quality.This paper adopts different fairness principles for applications with a large number of users and applications with large traffic requirements.Simulation results show that the proposed algorithm can effectively improve the quality of user experience.Secondly,the spectrum sharing QoE-aware radio resource optimization in the 5G network is studied.At present,there is little work considers the quality of experience of other technical users while introducing spectrum sharing,which will lead to a serious decline in the satisfaction of other technical users.This paper introduces LTE-U technology to alleviate the current shortage of spectrum resources and takes into account the experience quality of WiFi users.Simulation results show that the proposed algorithm can improve the quality of mobile user experience without affecting unlicensed bandwidth users.