Abstract
The problem of managing the scarce radio spectrum resource is addressed in this paper; based upon the Worldwide Interoperability for Microwave Access (WiMAX) network. Emerging and innovative techniques such as spectrum virtualization and network federation are adopted to enable the sharing of spectrum amongst mobile operators. A novel entity known as the Virtual Spectrum Hypervisor (VS-Hypervisor) facilitates the virtualization of the WiMAX spectrum on WiMAX's base-stations for spectrum sharing. A novel architecture for WiMAX network federation with a control plane known as the Virtual Spectrum Exchange Locale (VSEL) is designed for spectrum negotiation and exchange. The results obtained from the simulated implementation validates the efficacy of these approaches.