Energy Efficient Resource Allocation in UAV-based Heterogeneous Networks

Recently, the deployment of unmanned aerial vehicles (UAVs) in the wireless networks has gained attention to achieve a better quality of service (QoS) for the mobile nodes. This paper studies the use of UAV network to assist the terrestrial network to meet the QoS requirements of the mobile nodes. However, such cellular traffic offloading to the energy constrained UAVs is not trivial. Therefore, we propose a weighted power allocation scheme in the UAV assisted heterogeneous networks (UAV-HetNets) where both UAV and terrestrial networks are efficiently utilized to meet the QoS requirements of the mobile nodes. For that purpose, the weighted energy minimization problem is formulated under the QoS constraints of the mobile node. Simulation results are drawn to show the significance of the proposed energy efficient resource allocation scheme.