Research On SDN Network Resource Configuration Method

During the rapid development of mobile communications networks,today's network technology has facing great challenges,because of the rapid increase in the number of users,the growing demand for services,the traditional static network closed networking,and the lack of a flexible configuration management model.The 5G network technology is dedicated to solving the above problems with high speed,large capacity,and low latency.Software Defined Networking(SDN)and Network Function Virtualization(NFV)technologies are regarded as the two core technologies of the 5G technology.They virtualize the network,making the entire network a virtual poolable resource for computing,storage,and computing.Network managers can use the resource flexibly for different needs,thereby reducing operating costs and improving business innovation capabilities.In this paper,the SDN application scenarios and technical problems under the 5G mobile communication architecture are studied.And also,the resource configuration methods under the SDN network are analyzed.The detail researches are as follows:For the controller deployment based on SDN technology: In the SDN network architecture,the controller occupies the core position to control and manage the underlying resources,complete the routing calculation,forwarding management,and configuration scheduling of the underlying nodes.Therefore,in a specific network scenario,the design of the SDN controller deployment method is an important way to improve the network performance.Considering the above problems,we explored the controller deployment strategy based on the user's mobile behavior in the EPC network.The article elaborates the design idea of deployment scheme based on spectrum clustering algorithm and simulates the user's random movement model.The system simulation results show that the scheme reduces the signaling overhead between controllers and achieves the controller load balancing effect.For the SDP-based protocol function module allocation problem: SDP technology separates the control of the traditional protocol stack from the data plane,decouples the integrated protocol stack into a series of protocol function modules,and the control plane configures the corresponding functional modules on demand to complete specific data to achieve user-defined network services.According to different service requests,the design of the protocol function module allocation algorithm will have a serious impact on the utilization of network resources.In this paper,we propose a protocol function module reuse model that is based on queuing theory.Besides,the greedy algorithm is also adopted to implement the protocol module allocation scheme.Simulation results show that the proposed algorithm saves network resources and improves system resource utilization in the time-limited network.This paper makes a corresponding analysis and summary of SDN technology,then leads out the detailed introduction of SDP technology.The algorithm of controller deployment in the SDN network and the protocol module allocation algorithm in the SDP network are proposed,which shows a new idea for resource allocation in the SDN technology.