| Time | Alg. | Sub-region | Efficient UAV 3-D | Reference RPGM | Average pathloss | Pathloss |
| Step | | | Placement | Model placement | Usr-UAV | UAV-GCs | T1 | PSO | 0–200 | (472, 58.379, 100) | (230.81, 86.72, 0) | 122.1563 | 122.094 | GA | (470.22, 56.01, 102.74) | 122.1650 | T2 | PSO | 200–400 | (409, 293.248, 100) | (245.38, 300.45, 0) | 120.7329 | 120.7300 | GA | (409.3761, 293.6445, 100) | 120.7400 | T3 | PSO | 400–600 | (310, 518.708, 100) | (255.06, 519.13, 0) | 120.0709 | 119.9504 | GA | (312.42, 520.07, 100) | 120.0714 | T4 | PSO | 600–800 | (237, 723.795, 100) | (213.89, 716.78,0) | 119.8564 | 119.641 | GA | (239.10, 702.38, 100) | 119.700 | T5 | PSO | 800–1000 | (200, 903.039, 100) | (228.72, 903.46, 0) | 119.6643 | 119.5821 | GA | (203.88, 908.61, 100.06) | 119.6856 | T6 | PSO | 1000–1200 | (250, 1.1112e + 03, 100) | (260, 1101.8, 0) | 119.6257 | 119.0550 | GA | (251.42 1.1112e + 03 100) | 119.6258 | T7 | PSO | 1200–1400 | (271, 1.2872e + 03, 100) | (237.8, 1283.5, 0) | 119.3638 | 119.3418 | GA | (272.6354, 1.2923e + 03, 101.3710) | 119.4084 | T8 | PSO | 1400–1600 | (327, 1.4976e + 0,3 100) | (231.2, 1483.5, 0) | 120.0784 | 119.9063 | GA | (328.40 1.4974e + 03 100) | 120.0877 | T9 | PSO | 1600–1800 | 423, 1.7112e + 03, 100) | (262.9, 1713.5, 0) | 120.7655] | 120.6787 | GA | (428.29 1.7084e + 03 100.54) | 120.8518 | T10 | PSO | 1800–2000 | (443, 1.8982e + 03, 100) | (214.1, 1885.6, 0) | 122.0125 | 121.9112 | GA | (454.91 1.8977e + 03 101.68) | 122.2650 |
|
|