QoS-Aware Multilayer UAV Deployment to Provide VoWiFi Service over 5G Networks

Figure 4

Numerical results.

(a) Number of deployed D-UAVs

(b) Number of deployed A-UAVs

(c) Speech quality

(d) Percentage of covered users

(e) Average RSSI at ground users

(f) Average area covered by A-UAVs