Research On Radio Resource Scheduling Algorithm For 5G Network Slicing

5G networks need to meet different requirements in terms of delay,reliability,traffic density,and rate for multiple application scenarios.The traditional network architecture cannot meet the requirements of all application scenarios.Network slicing,that is,constructing different logical networks on a physical infrastructure on demand,is a key technology to solve the above problems.Access network slicing is an important part of the network slicing.Radio resource scheduling is the basis for implementing isolation and scheduling of slicing air interface resources in access networks.In the RAN slicing scenario,the problems faced by the PF algorithm are analyzed,a user-level wireless resource scheduling algorithm aiming at improving user satisfaction is designed,and a slice-level wireless resource scheduling algorithm aiming at improving system throughput is designed.For the problem that the PF scheduling algorithm cannot allocate resources on-demand for the slicing user in the RAN slice scenario,this paper proposes a slice-oriented user-level wireless resource scheduling algorithm.After analyzing the requirements of the three major scenarios of 5G networks e MBB,m MTC,and u RLLC on access network quality of service,the user's slicing characteristics are taken as the user's priority metric,and the PF algorithm is used to improve the user scheduling priority calculation method.According to user satisfaction,the fairness performance of the algorithm is evaluated.The algorithm achieves the effect of improving user satisfaction.Compared with the PF algorithm,the average user satisfaction is increased by an average of 34.17%.For the problem that the user-level radio resource scheduling algorithm has low system throughput in the RAN slice scenario,this paper proposes a slice-oriented slice-level radio resource scheduling algorithm.In order to improve the throughput of the system,taking into account the presence of a user accessing multiple slices at the same time,using the basic characteristics of the physical layer,taking the RB group as the basic unit of resource allocation,the slice is used as a resource allocation object and allocated to each slice.A relatively centralized RB guarantees resource isolation between slices and then performs resource scheduling on users in the slice.This algorithm compares the user-level wireless resource scheduling algorithm,and at the same time ensures the user satisfaction,it also increases the system throughput by an average of 11.81%.A simulation comparison between the two slice-oriented radio resource scheduling algorithms proposed in this paper and the traditional PF algorithm is performed to verify the performance improvement of the user-level radio resource scheduling algorithm in the average user satisfaction,and the slice-level radio resource scheduling algorithm in the system.Improved performance on throughput.