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Aerial RIS-Aided Physical Layer Security: Optimal Deployment and Partitioning
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  • Sultangali Arzykulov ,
  • Abdulkadir Celik ,
  • Galymzhan Nauryzbayev ,
  • Ahmed Eltawil
Sultangali Arzykulov
King Abdullah University of Science and Technology (KAUST)

Corresponding Author:[email protected]

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Abdulkadir Celik
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Galymzhan Nauryzbayev
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Ahmed Eltawil
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This paper proposes a novel approach for enhancing physical layer security (PLS) in wireless networks by utilizing a combination of reconfigurable intelligent surfaces (RIS) and artificial noise (AN). The proposed aerial RIS (A-RIS) concept utilizes a RIS-attached unmanned aerial vehicle (UAV) that hovers over the network area to improve the signal quality for legitimate users and jam that of illegitimate ones. We propose a method of virtually partitioning the RIS, such that the partition phase shifts are configured to improve the intended signal at a legitimate user while simultaneously increasing the impact of AN on illegitimate users. Additionally, thanks to the availability of closed-form optimal RIS portions, the proposed deployment approaches converge in less than a second, making it suitable for dynamic A-RIS deployment.