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Radio resource and service orchestration for virtualised multi-tenant mobile Het-Nets

Virtualization as a promising technology for future mobile communications enables the principle of customized services and multi-tenancy by providing a shared resource platform to all the involved tenants in an isolated manner. This paper proposes a model of radio resource management in virtualized heterogeneous mobile networks comprised of different access technologies. To realize the concept of virtualization, the roles of Infrastructure Providers (InPs) and network operators are separated. A virtualization platform is responsible for aggregating and vitalizing all the radio resources from different access technologies owned by InPs, and distributing the total capacity among various Virtual Network Operators (VNOs) in the role of tenants, according to service priorities and some fairness criteria, with the aim of satisfying their Service Level Agreements (SLAs). The model considers two VNOs with the capability of providing different service classes and SLAs in a multi access technology environment. Results under different channel conditions and traffic loads confirm a level of isolation in the performance of each VNO, while the SLAs are addressed to the highest possible level. Furthermore, almost always 100% of the aggregated capacity is utilized independently of the variation of different network parameters.