Key Technologies in Future Internet Virtualization

Network virtualization allows different service providers to dynamically establish concurrent but isolated heterogeneous virtual networks.This paper proposes network virtualization that supports context-aware.Using allocation and control technology for virtualization network resources and dynamic resources,a mapping relationship is established between substrate resources and upper service.A transparent separation can also be introduced in the virtualization layer between application layer and substrate infrastructure layer,and cognitive management can be implemented to dynamically control the virtualization network.In this way,the Internet can be greatly improved so that end to end QoS,security,and manageability are met.