Читать книгу Autonomous Airborne Wireless Networks - Группа авторов - Страница 24

Energy efficiency and resource management require attention where UAVs are operating in key scenarios to collect data from IoT devices, ensure public safety, and support cellular wireless network. Resource management is a major challenge in UAV communications unlike in cellular communications [55]. However, UAV communications introduce additional hindrance in radio resource management due to the interplay between the UAV flight duration, mobility pattern, limited energy source, and spectral efficiency. Therefore, in [56], resource management was jointly optimized with the UAV trajectory in wireless environment.

Limited amount of on‐board energy is available for battery‐operated UAV, which must be used for propulsion and to fulfill communication‐related tasks [5]. Consequently, continuous and long‐term wireless coverage curtails the UAV flight time. In addition, UAV energy consumption also depends on its path, weather condition, and mission of the UAV. Thus, energy constraints of UAV must be explicitly taken into account during planning of the UAV‐based communication systems. Various works have studied the interplay between energy efficiency and the optimal UAV trajectory [53–55].