Research And Implementation Of Structured Description Method Of Customizable Network Services

With the emergence of various new network technologies and application requirements, the traditional hierarchical network architecture is faced with many difficult problems and challenges. The network’s ability to provide services gets stuck. The fundamental cause of the present situation is that network system provides services in the form of strong interaction and strong stratification. It ensures the service function through interaction among layers and gets the user requirements through the application layer. Thus it can not well support the dynamic deployment of new protocols. And there is a certain functional redundancy between layers.A method of network service structuralization was put forward and focused on service extension and dynamic deployment. First the thesis compared the traditional network structure with two kinds of new network structures and pointed out the main problem in the aspect of service customization. Second the experience of the structured programming method in software engineering was drew on and brought in network architecture design. Then the thesis proposed the customizable network service model by decoupling service control logic and abstracting protocol processing mechanism. In order to support the description of service customization demand and dynamic construction of the internal network service instance, a structured service description method was designed. Finally, the rationality of the network service structuralization method and design specifications of the description was validated by experiments.