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Widely available and remotely accessible testbeds have been used for a direct comparison of innovative protocols and ideas with existing technologies. Therefore, multiple testbeds have been established, aiming at providing experimentation services with both wireless and wired networks. In this context, several frameworks have been developed that enable easy experimentation with the heterogeneous resources that the testbeds provide. However, most of these testbeds aim only in wireless/wired networking experimentation, resulting in unsimilar testbed control and experimentation tools. Several attempts have been made towards bridging this gap in order to allow experimentation with heterogeneous wired and wireless resources. In this article, we present our contributions in extending the state-of-the-art control and management framework for wireless testbeds with support for Software Defined Networking resources. As a proof of concept, we demonstrate two use cases that take advantage of our extensions using novel architectures and present our findings.

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LTE and LTE-A have dominated as a 4G enabler protocol, adopted by the majority of the network providers worldwide. The efficient performance of an LTE network relies on the selected frequency within an operating band that the cell operates, by taking into account all the potential factors that can affect it. Since cognitive radio is targeting towards the maximization of spectrum utilization, it is crucial that it is adopted in the spectrum allocation process. In this work, we propose an efficient scheme for cell planning by employing spectrum sensing techniques. By exploiting spectral information collected by several sensing devices, we appropriately select the center frequency inside the operating band, towards maximizing the quality of the end user experience. Our algorithms are implemented for the downlink channel, considering a variety of configurations and topologies. Finally, our implemented mechanism is evaluated in the real world deployment of the NITOS Future Internet facility, using commercial LTE enabled femto cells and UEs, while USRP sensing devices are employed for high quality spectral information provisioning.