Optical HAPS Eavesdropping in Vertical Heterogeneous Networks

In the next generation (6G) wireless networks, integration of terrestrial and non-terrestrial networks is essential to provide flawless connectivity over globe. The vital element this architecture high altitude platform station (HAPS) systems, which can reliable ubiquitous among satellites, unmanned aerial vehicles (UAVs), users. Motivated by importance HAPS in paper, we three different use-cases for eavesdropping scenarios investigate their physical layer security (PLS) performances. To quantify PLS performance proposed setups, perform secrecy outage probability (SOP), positive (PPSC), average capacity (ASC), throughput (ST) analyses. Furthermore, also important design guidelines that be beneficial secure systems.