# Bio-Inspired Dynamic Trust and Congestion-Aware Zone-Based Secured Internet of Drone Things (SIoDT)
## 5 Results and Discussion
### Comparative Analysis according to Varying Number of Vehicles  
The parameters used for the vehicle-based analysis are energy efficiency, packet delivery ratio, routing overhead, end-to-end delay, packet loss, and throughput. The performance of the proposed BDTC-SIOVTs is compared with earlier research such as LAKA-IOD, NCAS-IOD, and TPDA-IOV. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Parameters**} & **Speed** & **Flooding** & **Insider** & **Wormhole** & **Position F** \\  & **(m.s\({}^{-1}\))** & **Attack** & **Attack** & **Attack** & **Attack** \\ \hline \multirow{6}{*}{Energy Efficiency (\%)} & 10 & 97.124 & 98.146 & 98.164 & 95.248 \\  & 15 & 96.795 & 97.968 & 97.467 & 94.652 \\  & 20 & 96.284 & 97.124 & 96.114 & 94.128 \\  & 25 & 95.764 & 95.247 & 95.116 & 92.146 \\  & 30 & 94.784 & 94.524 & 94.867 & 91.356 \\  & 35 & 93.475 & 92.475 & 93.354 & 90.247 \\ \hline \multirow{6}{*}{Packet Delivery Ratio (\%)} & 10 & 98.246 & 97.475 & 96.856 & 93.264 \\  & 15 & 97.864 & 97.124 & 95.473 & 91.457 \\  & 20 & 97.524 & 96.256 & 94.256 & 91.234 \\  & 25 & 97.124 & 95.127 & 93.175 & 90.225 \\  & 30 & 96.864 & 94.865 & 92.468 & 89.237 \\  & 35 & 96.224 & 94.524 & 91.334 & 89.024 \\ \hline \multirow{6}{*}{Routing Overhead (PACs)} & 10 & 196 & 254 & 316 & 345 \\  & 15 & 345 & 385 & 428 & 596 \\ \cline{1-1}  & 20 & 486 & 524 & 564 & 725 \\ \cline{1-1}  & 25 & 695 & 754 & 796 & 896 \\ \cline{1-1}  & 30 & 854 & 956 & 996 & 1056 \\ \cline{1-1}  & 35 & 964 & 1025 & 1125 & 1245 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: The values of Energy Efficiency, Packet Delivery Ratio, and Routing Overhead concerning varying speed and attacks. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Parameters**} & **Speed** & **Flooding** & **Insider** & **Wormhole** & **Position F** \\  & **(m.s\({}^{-1}\))** & **Attack** & **Attack** & **Attack** & **Attack** \\ \hline \multirow{6}{*}{E2E\_Delay (m.s\({}^{-1}\))} & 10 & 55.237 & 62.498 & 75.127 & 83.227 \\  & 15 & 61.286 & 66.985 & 86.478 & 91.467 \\  & 20 & 65.217 & 72.368 & 105.478 & 112.462 \\  & 25 & 76.548 & 81.467 & 125.789 & 139.794 \\  & 30 & 96.457 & 102.564 & 142.568 & 156.795 \\  & 35 & 112.468 & 125.864 & 156.758 & 176.528 \\ \hline \multirow{6}{*}{Packet Loss (PACs)} & 10 & 102 & 144 & 165 & 171 \\  & 15 & 114 & 154 & 171 & 175 \\ \cline{1-1}  & 20 & 124 & 167 & 186 & 191 \\ \cline{1-1}  & 25 & 157 & 186 & 213 & 225 \\ \cline{1-1}  & 30 & 196 & 201 & 237 & 241 \\ \cline{1-1}  & 35 & 235 & 245 & 275 & 282 \\ \hline \multirow{6}{*}{Throughput (Kbps)} & 10 & 998 & 925 & 857 & 825 \\ \cline{1-1}  & 15 & 965 & 896 & 824 & 798 \\ \cline{1-1}  & 20 & 894 & 846 & 786 & 772 \\ \cline{1-1}  & 25 & 827 & 796 & 754 & 749 \\ \cline{1-1}  & 30 & 778 & 761 & 722 & 715 \\ \cline{1-1}  & 35 & 756 & 721 & 694 & 691 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: The values of End-to-End Delay, Packet Loss, and Throughput concerning varying speed and attacks. In Figure 13, it is attested that the energy efficiency of the proposed BDTC-SIOVAs is higher than the earlier methods. The cause for this achievement is that the proposed BDTC-SIOVAs are the combined enhanced trust-based clustering and hybrid optimization. This optimization method is the permutation of the ACO and GWO algorithms, which helps to overcome the drawback in the high-speed VANETs. In cluster-based VANETs networks, cluster has a major role in data gathering. So, it is essential to secure cluster communication from the external environment. For that reason, in the proposed BDTC-SIOVAs, dynamic trust-based clustering is initiated so that the packets which get transmitted through the CH are highly secured and there is no way for packet loss to be reflected in the increase in the packet delivery ratio of the proposed BDTC-SIOVAs, which is illustrated in Figure 14.  
From Figure 15, it is understood that the proposed BDTC-SIOVAs provide a noteworthy decrement in the overhead performance when compared with others.