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Cooperation between Unmanned Aerial Vehicles and Wireless Cellular System

Authors:
Vicente Casares-Giner
Xiaohu Ge
Yuxi Zhao

Keywords: Unmanned Aerial Vehicle, Quasi-Birth-Death process.

Abstract:
We consider the cooperation of Unmanned Aerial Vehicles (UAV) with wireless cellular mobile systems. UAVs collaborate closely with Base Stations (BSs) when they are occasionally present in the coverage area of a BS. From the tele-traffic point of view, UAVs can provide additional capacity to cellular BSs such as to alleviate saturation conditions during periods of high traffic congestion. The assignment of traffic channels works as follows; when a call arrives to the system it is assigned to any free channel of the BS. If all channels of the BS are busy, the call is assigned to any free channel of any present UAV. If all channels of the present UAVs are busy, the call is lost. When a call served by a given BS ends, any other call in progress on a UAV, if any, is transferred to the released channel of that BS. When a UAV leaves the coverage area of the BS, the calls in progress in that UAV are transferred to the idle channels of other UAVs, as many as possible; and calls that cannot be transferred are lost. The scenario under study is modeled as a 2-D Markov process. One dimension takes into account the number of UAVs present in the system and the other dimension deals with the number of calls in progress. We evaluate, i) the blocking probability of new calls, ii) the forced termination probability of ongoing calls, iii) when an ongoing call ends at the BS, the probability of transferring an ongoing call from a given UAV to that BS, and iv) when a UAV leaves the service area, the probability of transferring its ongoing calls to another UAV.

Pages: 82 to 87

Copyright: Copyright (c) IARIA, 2025

Publication date: July 6, 2025

Published in: conference

ISBN: 978-1-68558-284-5

Location: Venice, Italy

Dates: from July 6, 2025 to July 10, 2025