AB - © 2019 IEEE. Unmanned Aerial Vehicles (UAVs) are fast becoming a popular choice in a variety of applications in wireless communication systems. UAV-mounted base stations (UAV-BSs) are an effective and cost-efficient solution for providing wireless connectivity where fixed infrastructure is not available or destroyed. We present a method of using UAV-BSs to provide coverage to mobile users in a fixed area. We propose an algorithm for predicting the user locations based on their mobility data and clustering the predicted locations, so that one UAV-BS would provide coverage to one user cluster. The proposed method, hence is similar to the UAV-BSs following the users to keep them under the coverage region. Simulation results show that the proposed method increases the user coverage by 47%-72% and increases the spectral efficiency by 43%-55% depending on the scenario and in addition, reduces the number of UAV-BSs required to provide coverage. AU - Abeywickrama, HV AU - He, Y AU - Dutkiewicz, E AU - Jayawickrama, BA DA - 2019/04/01 DO - 10.1109/WCNC.2019.8885892 JO - IEEE Wireless Communications and Networking Conference, WCNC PY - 2019/04/01 TI - An Adaptive UAV Network for Increased User Coverage and Spectral Efficiency VL - 2019-April Y1 - 2019/04/01 Y2 - 2026/05/11 ER -