Construction And Application Of Service Relation Graph In SDEN

As network applications continue to evolve,the ability of network services to quickly adapt to changes in demand has become one of the key issues in current and future network research.The Service Dynamic Extensible Network(SDEN),which aims to enhance service capabilities,is based on the idea of decoupling the core functional business logic of traditional protocols from the service control logic they contain,making network services dynamically extensible and adaptable.However,as the variety and number of atomic services grows,the organization of existing atomic service relationships in SDEN becomes a potentially critical constraint on the capability of SDEN network services,so how to effectively organize atomic service relationships with dynamic scalability is the main focus of this paper.Based on the analysis of the local dependency characteristics of network services,this paper constructs a service relationship graph and uses it to optimize the service combination mechanism in the node control engine,to achieve good support for the SDEN network service capability.Firstly,we summarize the characteristics of atomic service relationships and define the types of service relationships in terms of the characteristics of atomic services and the principles of dynamic generation and operation of service instances.On this basis,a dynamically scalable service relationship graph model is proposed,its basic structure definition and core components are discussed,and a scenario-based service relationship graph extension algorithm and a service instance state machine generation algorithm are further presented.A prototype system is then designed and implemented in SDEN.Finally,based on the prototype system,three typical application scenarios,namely customizable service instance generation,scenario-based service scalable instance generation and dynamically adjustable service capability instance generation,are used to verify the effectiveness of the service relationship graph and to compare its scalability.The results show that the service relationship diagram model can provide good support for SDEN service capabilities and enhance the ability of network services to adapt to changes in demand when the number of atomic services grows.