Research On Network Slicing In Northward Interface Of 5G Bearing Network

Since entering the 21st century,the scientific and technological strength of China has gradually improved,our country is accelerating into the 5G era.Relying on network slicing,a virtualized logic network can be established to realize the differentiated needs of users,and each user is independent and unaffected when using it.It can build a flexible and convenient 5G network,so that users can get a better sense of use.By studying the application progress of network slicing in 5G bearing network,this thesis concludes the problems and limitations of the current 5G bearing network:the current management and control fusion system can abstract the resources of the underlying devices into the objects of network management for unified management and control.However,this system is a single manufacturer,which can only conduct separate management within their respective manufacturers,it does not interact with the upper end-to-end slice control system.Therefore,this thesis aims to achieve the problem of upper and lower interaction by modeling the northward interface of bearing section control.To solve the above problems,this thesis firstly studies the layered model of SPN(Slicing Packet Network)and the multiplexing relationship between layers,and the network management system is taken as an example for detailed analysis.Then,specific resource slicing is carried out for the four basic network slicing service types supported by SPN network.By comparing the differences,advantages and disadvantages between three-layer slicing and four-layer slicing,the slicing scheme is determined and four different types of slicing examples are obtained.In the determined slicing scheme,the most typical and widely used slicing scene type is selected to design the VN(Virtual Network)model of bearing slicing based on TAPI(Telephone Application Programming Interface).The mapping relationship of the interaction model of bearing slicing control northward interface is determined,and the YANG result message of the interaction call process of the interface is given.The interaction between the load-bearing network control fusion system and the upper end-to-end slice control system is realized,and the feasibility of the northward interface model of the load-bearing slice is verified,which is in line with the research expectation of the subject.It provides a feasible solution for the interaction between the load-bearing network control fusion system and the upper end-to-end slice control system.