Efficient Virtualized Resources Allocation in Network Virtualization Environment: A Service Oriented Perspective

In the network virtualization environment, physical network resources are usually abstracted in order to be managed and allocated by telecommunication providers in a flexible manner. The virtualized resources allocation issue is called as virtual network embedding (VNE). The research of VNE attracts extensive attention from academic community. Correspondingly, multiple VNE algorithms are proposed. However, existing VNE algorithms adopt ‘one fits all’ mode to serve all different VN services, requested by end users. Different customized VN services usually have different resource and QoS demands. Adopting the ‘one fits all’ mode to serve all different VNs will eventually lead to inefficient resources utilization and low revenues of telecommunication providers. Hence, it is essential to research the service oriented virtualized resources allocation issue in network virtualization environment, aiming at efficiently map each customized VN service. In this paper, we research the service oriented resources allocation problem. A novel framework, labeled as SerOri, is proposed. The SerOri framework mainly consists of two parts: the VN service classification part SerOri-Class and the VN embedding part SerOri-Embed. By adopting the SerOri, each requested VN service can be implemented efficiently. In order to highlight our SerOri framework, we conduct the simulation experiments in our self-developed platform. Existing embedding algorithms are selected for comparison. In addition, we illustrate and discuss the experiment results.

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