Urban Field Evaluation of Dynamic Spectrum Sharing by Estimating Communication System for beyond 5G

We have proposed a dynamic spectrum sharing system. Secondary users monitor the spectrum usage by the primary users in each location and time. The system determines the appropriate spectrum sharing conditions such as available spectrum bands and transmission powers based on their spectrum usage. One of the conventional scheme issues includes the spectrum-sharable area decreasing according to the conditions. This paper proposes the dynamic spectrum sharing scheme by estimating radio communication systems of primary users. We also show the field evaluation results of sharable spectrum in urban area.