Research And Implementation Of Service Requirements Description Method And Custom Protocol In SDEN

Demand-driven Service is the mainstream direction of future Network application development,Network Service ability how to quickly meet demand become one of the core of the research and development of future Network,Service Dynamic Extended Network(SDEN)provides an effective way of on-demand customization of Network Service through Dynamic deployment of atomic services and on-demand combination method,so to realize Dynamic matching between Network Service capability and user demand.This paper focuses on one of the key issues in SDEN--demanddriven service mechanism.This paper first introduces the SDEN network service model and the principle of service capability extensibility,and points out the importance of demand-driven service mechanism in SDEN network.Then,according to users' demand description of network service capability,a service demand description method based on domain ontology is proposed,to solve ambiguity and other related problems in requirement description.Secondly,aiming at the problem of mapping between service requirement description and corresponding service instance dynamic construction,a service matching algorithm based on multiple tags is proposed,to implement requirements to services mapping.Then,for the user-oriented service customization requirements and the dynamic deployment of atomic services,service customization protocol and service deployment protocol are proposed respectively to provide the network interface for customization and management of services.Finally,several experiments are carried out to verify the effectiveness and feasibility of the proposed theoretical methods.The experimental results show that the proposed requirements description method and related protocols can be effectively applied to SDEN network and realize the demanddriven service mechanism.