A Study on Pathloss Model for UAV Based Urban Disaster and Emergency Communication Systems

摘要: In recent times, airborne Base Station (BS) or Unmanned Aerial Vehicle (UAV) mounted Evolved Node B (UeNBs) are used to provide broadband services, and rescue responses in emergency natural disaster scenarios. Most of the prior studies on BS assume outdoor users only consider their position coordinates a two-dimensional (2-D) plane considering Euclidean distance based pathloss. However urban scenarios such as flooding cyclone, trapped inside single multi-storey buildings; user positions three-dimensional (3-D) plane. Reliable communication operations situation is possible if pathloss characteristics for both, UeNB (uplink) vice versa (downlink), known a-priori. Since above combination indoor component, it becomes challenge adopt appropriate model which can be during communications. this paper, we have studied several state-of-the-art models applicable compared performances. We also impact environments uplink downlink models. Our extensive simulation results give full fledged insight channel UAV wireless system. From our simulations, learnt that Winner II [1] with additional blockage component provides best an scenario. Furthermore, analyzed different topological parameters hovering altitude, building heights, users, etc., characteristics.