Physical Layer Security of 6G Vehicular Networks with UAV Systems:First Order Secrecy Metrics,Optimization,and Bounds  

作　　者：Sagar Kavaiya Hiren Mewada Sagarkumar Patel Dharmendra Chauhan Faris A.Almalki Hana Mohammed Mujlid 

机构地区：[1]Smt.Chandaben Mohanbhai Patel Institute of Computer Applications,Charotar University of Science and Technology,Changa,Anand,388421,India [2]Electrical Engineering Department,Prince Mohammad Bin Fahad University,P.O.Box 1664,Al Khobar,31952,Kingdom of Saudi Arabia [3]Department of Electronics and Communication Engineering,Chandubhai S.Patel Institute of Technology,Charotar University of Science and Technology,Changa,Anand,388421,India [4]Department of Computer Engineering,College of Computers and Information Technology,Taif University,P.O.Box 11099,Taif,21944,Kingdom of Saudi Arabia

出　　处：《Computers, Materials & Continua》2024年第9期3685-3711,共27页计算机、材料和连续体（英文）

基　　金：funded by Taif University,Taif,Saudi Arabia,Project No.(TUDSPP-2024-139).

摘　　要：The mobility and connective capabilities of unmanned aerial vehicles(UAVs)are becoming more and more important in defense,commercial,and research domains.However,their open communication makes UAVs susceptible toundesirablepassive attacks suchas eavesdroppingor jamming.Recently,the inefficiencyof traditional cryptography-based techniques has led to the addition of Physical Layer Security(PLS).This study focuses on the advanced PLS method for passive eavesdropping in UAV-aided vehicular environments,proposing a solution to complement the conventional cryptography approach.Initially,we present a performance analysis of first-order secrecy metrics in 6G-enabled UAV systems,namely hybrid outage probability(HOP)and secrecy outage probability(SOP)over 2×2 Nakagami-m channels.Later,we propose a novel technique for mitigating passive eavesdropping,which considers first-order secrecy metrics as an optimization problem and determines their lower and upper bounds.Finally,we conduct an analysis of bounded HOP and SOP using the interactive Nakagami-m channel,considering the multiple-input-multiple-output configuration of the UAV system.The findings indicate that 2×2 Nakagami-mis a suitable fadingmodel under constant velocity for trustworthy receivers and eavesdroppers.The results indicate that UAV mobility has some influence on an eavesdropper’s intrusion during line-of-sight-enabled communication and can play an important role in improving security against passive eavesdroppers.

关 键 词：Physical layer security 3D positioning 6G communications UAV systems 

分 类 号：TN929.5[电子电信—通信与信息系统] TP393.08[电子电信—信息与通信工程]