Design And Development Of Network Slicing In Multi-Domain Networks

With the popularity of 5G applications,in the multi-domain network environment,there are a large number of concurrent services going online and the demand for data is increasing.At the same time,the performance of end-to-end data transmission needs to be guaranteed.Therefore,how to control and manage them in a unified manner How to allocate physical resources more reasonably is an important issue Network slicing technology based on software-defined network and network function virtualization technology,which can separate network control and data planes,flexibly allocate shared virtualized network service resources for different service requirements,improve network scalability,and support multiple multi-tenancy isolation of network services.However,considering the complex communication environment of wired and wireless hybrid networking in the actual communication process,and more different service types,multi-domain network slicing still faces the important challenges brought by this network heterogeneity.This paper designs a multi-domain network slicing framework based on multi-domain heterogeneous networks,and divides the network into three levels:control plane,slice plane and data plane.The corresponding forwarding logic is generated for different service logics in the control plane,and then the slice plane performs the cross-heterogeneous domain integration and reconstruction of the forwarding logic according to the network resource statistics,forming a data plane forwarding rule,and finally passing the software switch of the data plane to execute and implement network slicing.At the same time,an implementation scheme is proposed for the framework design.The control plane is extended based on the Floodlight controller to realize the mapping process from business logic to forwarding logic.In the slice plane,based on FlowVisor,the on-demand allocation of the cross-domain network slice and the reconstruction of the forwarding rule are implemented.In the data plane,packet traffic is forwarded and isolated based on software switches.A multi-domain network simulation environment with wired and wireless networks is built The multi-domain network slice partitioning experiment based on bandwidth requirements and the multi-domain network slice partitioning experiment based on service class are tested respectively to verify the feasibility of the proposed multi-domain network slice framework and the isolation between slices can meet the basic performance of the slice,making the network more flexible...