and scheduled based on the provided services to achieve a better service differentiation against different NSPs [@Nikaein].

In this context, the main focus of virtual resource allocation is to realize the connection between the virtual networks and physical networks. It includes the selection of nodes, radio links, antenna, power, spectrum and other resources, as well as the optimization and combination of them. Unlike wired networks, radio resource allocation becomes much more complicated in the WNV due to the changeability of transmission coverage, frequency channels, user mobility, service demand, interference, transmit power and so on [@Moubayed]. What’s more, all the parties involved want to maximize their own revenue, so the game theoretic approach should be investigated to maximize the benefits in the XaaS framework.

Network Management and Deployment
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Management and deployment of the WNV are important to guarantee the proper and efficient operation of the virtualized wireless networks and the XaaS supported by the WNV. As the XaaS will be based on different physical substrate networks, network management and deployment confront many new challenges. In particularly, the physical substrate network is usually formed by various heterogeneous networks, each of which may have unique and specific properties, thus, careful design for 