| Network functions virtualization(NFV)technology implements the rapid deployment of the network.Software defined networking(SDN)technology implements the global control of the network.Service function chain(SFC)technology generated by the integration of both can arrange service functions(SFs)according to the dynamically changing underlying resources and user requirements to provide flexible and diverse services for cloud data centers.At present,how to use the future network technology to provide efficient and active services has become an urgent problem to be solved.The orchestration method of business ecosystem is proposed to ensure users’ quality of service(QoS)under limited network resources,including the construction method of SFC,the reasonability verification method of SFC,the mapping deployment method of SFC and the unified construction of SFC and business systems.In order to avoid deployment failure caused by conflicts among SFs in practice,a method to guide the construction of SFC is given according to the dependency relationship among SFs composing SFC.Then,the reasonability of the constructed SFC is verified before deployment by using colored Petri net modeling SFC.The reasonably constructed user service quality is mapped and deployed with the proposed service function chain deployment method based on user QoS and network resource awareness.This method comprehensively considers multi-dimensional user service quality requirements and minimizes resource consumption.In order to further improve the success rate of service deployment,the SFC is integrated with the data model of the business systems,and the SFC path is dynamically configured according to the prediction result of the data model.The experimental results show that the proposed orchestration of business ecosystem is better than other deployment methods and slightly better than heuristic deployment method proposed in this paper,which the success rate of deployment is further improved. |
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