Spectrum sensing and detection of incumbent-UEs in secondary-LTE based aerial-terrestrial networks for disaster recovery

Abstract

In a disaster recovery scenario, there is a need for the deployment of a supplementary communications infrastructure when the regular communications infrastructure is considered to be damaged and is temporarily unavailable. Hence, we consider such a supplementary network operating as secondary user of the spectrum, which opportunistically utilizes the same spectral band as the incumbent regular network until the incumbent comes alive. When the incumbent network comes alive, it is important to vacate the corresponding spectral bands without interfering with its communications. In our work, we consider both the secondary and incumbent networks as LTE networks where the secondary network has an..