# Rapid Deployment Method for Multi-Scene UAV Base Stations for Disaster Emergency Communications
## 4 Simulation Results and Discussion
### Simulating the Data Transmission Rate in Diverse Environments  
To verify the effectiveness of the rapid deployment approach for UAV communications restoration in disaster-affected areas, we performed a data transmission rate verification in Figures 10-12. We divide the disaster areas into three types: urban, suburban, and rural. The actual data transmission rate of deployed drones will vary because the density of ground users awaiting rescue varies from disaster to disaster. Specifically, we first calculated the distance between each ground user awaiting rescue and a nearby target deployment point, calculated the signal quality index \(SINR\) based on the distance, calculated the data transmission rate of each location based on \(SINR\), and finally, a contour map of the data transmission rate based on the minimum data transmission rate. The bandwidth frequency is expressed as \(F_{BW}\). By calculating the distance between each ground user and the nearest ground base station, the value of \(SINR\) is obtained, where a value \(\mathfrak{M}\) greater than or equal to 1 Mbps is considered effective communication. The formula for calculating the data transmission rate is as follows:  
\[\mathfrak{M}=F_{BW}\times\log 2(1+SINR) \tag{22}\]  
We set the initial hover height of the UAVs base station to 200 m, and the initial launch power of the UAVs base station to 60 dBm. At this time, in urban environments, the deployment of the central data transmission rate reaches 900 Mbps, with the deployment of the edge data transmission rate being 100 Mbps (Figure 10b); we assume a single UAV base station energy of 600 Wh and, according to Formula (21), calculated the UAV base station usage time as being 519.08 s. Then, we adjusted the hover height of the UAV base station to 100 m and the launch power of the UAV base station to 40 dBm. At this time, in urban environments, the deployment of the central data transmission rate also reaches 900 Mbps, with the deployment of the edge data transmission rate also being 100 Mbps (Figure 10a); thus, according to Formula (21), we calculated the UAV base station usage time as 1399.39 s. In urban environments, our approach increases the usage time of UAV base stations while maintaining the data transmission rate. We set the initial hover height of the UAVs base station to 200 m, and the initial launch power of the UAVs base station to 60 dBm. At this time, in suburban environments, the deployment of the central data transmission rate reaches 700 Mbps, with the deployment of the edge data transmission rate being 100 Mbps (Figure 11b); we assume a single UAV base station energy of 600 Wh, so, according to Formula (21), we calculated the UAV base station usage time as 519.08 s. Then, we adjusted the hover height of the UAV base station to 160 m and the launch power of the UAV base station to 30 dBm. At this time, in suburban environments, the deployment of the central data transmission rate also reaches 700 Mbps, with the deployment of the edge data transmission rate also being 100 Mbps (Figure 11a); thus, according to Formula (21), we calculated the UAV base station usage time is 893.93 s. In suburban environments, our approach increases the usage time of UAV base stations while maintaining the data transmission rate. We set the initial hover height of the UAVs base station to 200 m, and the initial launch power of the UAVs base station to 60 dBm. At this time, in rural environments, the deployment of the central data transmission rate reaches 500 Mbps, with the deployment of the edge data transmission rate being 50 Mbps (Figure 12b); we assume a single UAV base station energy of 600 Wh, so, according to Formula (21), we calculated the UAV base station usage time as 519.08 s. Then, we adjusted the hover height of the UAV base station  
Figure 11: The data transmission rate of UAVs base station in suburban environment: (**a**) 160 m hover height deployment and 30 dBm launch power; (**b**) 200 m hover height deployment and 60 dBm launch power.