Abstract
In fifth generation (5G) networks, the densification of small base stations in the coverage region of macro base station (MBS) leads to significant inter-cell interference (ICI). Similarly, drones (a.k.a. unmanned aerial vehicles) have a diverse scope in multifarious 5G assisted applications and, therefore, cause considerable drones interference (DI) as a result of excessive drone usage. This paper investigates the bottleneck uplink (UL) coverage performance of the MBS edge users in the presence of ICI and DI. To mitigate both ICI and DI, we use an efficient resource allocation scheme known as reverse frequency allocation (RFA). Moreover, we use decoupled association (DeCA) in place of coupled association to further improve UL signal-to-interference ratio. The results depict that RFA in conjunction with DeCA overpass all other techniques in terms of improved UL coverage performance because of effective DI and ICI mitigation.
Highlights
We explore the effect of drones interference (DI) and inter-cell interference (ICI) on the bottleneck uplink (UL) communication of macro base station (MBS) coverage edge users (M-EUs)
We present simulation and numerical results for the UL coverage probability given that ν ∈ AoM, while considering excessive drone usage (EDU) and reverse frequency allocation (RFA) for (i) coupled association (CA), and (ii) decoupled association (DeCA)
RFA and DeCA lead to significant UL coverage improvement and, outperform all other techniques
Summary
RELATED WORK In [23], the authors examine the effects of users and device mobility in device-to-device (D2D) and drone-assisted mission-critical machine-type communications Their results show that D2D links and drone-assisted access lead to 40% improvements in link availability and reliability on top of the cellular-only baseline. The authors propose that the drones move continuously within the cell Their proposed setup reduces the distance between the BS and the UEs and, improves spectral efficiency of the network. The authors in [28] evaluate drones’ usage in multiple-input multiple-output (MIMO) and non-orthogonal multiple access assisted networks while utilizing stochastic geometry framework They derive outage probability expressions for proposed setup. The work in [32] proposes modified RFA, which leads to significant coverage improvement as a result of reduced interference. 2) The works in [29]–[32] analyze DL coverage in the presence of ICI, in this paper, we investigate UL coverage performance in the presence of ICI and DI
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