Holes-in-the-Sky: A field study on cellular-connected UAS
| Autor: | Bob Iannucci, João Diogo Falcão, Ervin Teng |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Open problem Distributed computing 020206 networking & telecommunications 020207 software engineering 02 engineering and technology Field (computer science) Network planning and design Software deployment Broadband 0202 electrical engineering electronic engineering information engineering Cellular network Path loss business Collision avoidance Simulation |
| Zdroj: | 2017 International Conference on Unmanned Aircraft Systems (ICUAS). |
| Popis: | Small unmanned aerial systems (UAS) require constant, safety-critical connectivity for telemetry, command-and- control, and collision avoidance. Today, dedicated, short-range pilot-to-aircraft links provide this connectivity for UAS operation. For UAS operating in fleets and beyond line-of-sight, a robust multi-transmitter network to provide connectivity over a wide area will be needed. However, networks that could serve this purpose, such as the ubiquitous broadband cellular networks, were planned and deployed for terminals on the ground. Hardening multi-transmitter networks for aerial use remains an open problem. In this paper, we demonstrate through field measurement that a typical cellular deployment could result in low-coverage areas for UAS — what we call the “hole-in-the-sky” phenomenon. Furthermore, many of the propagation models and assumptions commonly used in terrestrial network planning fail to accurately predict aerial signal strength. From first principles, we identify and model the predominant contributors to path loss, and form a combined propagation model that more accurately reflects reality for the tested scenarios. Motivated by this study, we identify a new research direction towards avoiding holes-in-the-sky during flight. |
| Databáze: | OpenAIRE |
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