## 5 Conclusions  
The present work has analyzed the performance of the DARP network protocol for large-size Smart City type scenarios under low and medium density conditions, focusing on the analysis of the configuration parameters. The protocol DARP is based on two algorithms, DRSP and DARAL, which carry out the task of communication within large communication infrastructures. The core of this proposal relies on a link quality indicator based method for selecting the best link, allowing a node to choose its own role in the network, as well as the cluster to connect with. These characteristics have been demonstrated effective to reduce the control message overhead, the energy consumption and the convergence time during the network set-up phase. This network protocol has been already presented in prior work but its performance needs to be analyzed with different relevant factors in the scope. The factors that have been considered are: the Reconnection Timer (T_REC), the ACK Timer (T_ACK), the Link Timer (T_LINK), the Baselevel Threshold (TH_B), the Down Timer (T_DOWN) and the Role Threshold (TH_R). In order to characterize \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Reconnection Timer (T_REC)** & **LS Mean** & **LS Sigma** & **Homogeneous Groups** \\ \hline T\_REC1 & 1011 & 4.40 & X \\ T\_REC2 & 1552 & 4.46 & X \\ T\_REC3 & 5021 & 4.41 & X \\ \hline \hline \end{tabular}
\end{table} 
Table 10: Results of the Multiple Range Tests for the factor Reconnection Timer (T_REC) using as dependent variable Convergence Time. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Source** & **Sum of Squares** & **Df** & **Mean Square** & **F-Ratio** & \(p\)**-Value** \\ \hline MAIN EFFECTS & & & & \\ \hline A:Baselevel Threshold (TH_B) & \(2.5\times 10^{7}\) & 2 & \(1.26\times 10^{6}\) & 9.65 & 0.0001 \\ B:Role Threshold (TH_R) & \(1.83\times 10^{6}\) & 2 & \(9.17\times 10^{5}\) & 7.00 & 0.0009 \\ C:ACK Timer (T\_ACK) * & \(1.46\times 10^{8}\) & 2 & \(7.31\times 10^{7}\) & 557 & 0.0000 \\ D:Reconnection Timer (T\_REC) * & \(6.38\times 10^{10}\) & 2 & \(3.19\times 10^{10}\) & \(2.43\times 10^{5}\) & 0.0000 \\ E:Down Timer (T\_DOWN) & \(1.15\times 10^{5}\) & 2 & \(5.77\times 10^{4}\) & 0.44 & 0.6435 \\ F:Link Timer (T\_LINK) * & \(1.05\times 10^{8}\) & 2 & \(5.27\times 10^{7}\) & 403 & 0.0000 \\ \hline INTERACTIONS & & & & \\ \hline AD * & \(1.28\times 10^{7}\) & 4 & \(3.22\times 10^{6}\) & 24.6 & 0.0000 \\ CD * & \(7.77\times 10^{5}\) & 4 & \(1.94\times 10^{7}\) & 148 & 0.0000 \\ CF * & \(3.32\times 10^{6}\) & 4 & \(8.32\times 10^{5}\) & 6.35 & 0.0000 \\ DF * & \(1.92\times 10^{7}\) & 4 & \(4.80\times 10^{6}\) & 36.63 & 0.0000 \\ \hline RESIDUAL & \(2.66\times 10^{9}\) & 20,314 & \(9.77\times 10^{4}\) & & \\ TOTAL (CORRECTED) & \(6.78\times 10^{10}\) & 20,412 & & \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Summary of the ANOVA table, which decomposes the variability Convergence Time (s) into contributions due to several factors. The factors and interactions marked with * are statistically significant. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Reconnection Timer (T_REC)** & **LS Mean** & **LS Sigma** & **Homogeneous Groups** \\ \hline T\_REC1 & 1011 & 4.40 & X \\ T\_REC2 & 1552 & 4.46 & X \\ T\_REC3 & 5021 & 4.41 & X \\ \hline \hline \end{tabular}
\begin{tabular}{c c c c} \hline \hline
**ACK Timer (T\_ACK)** & **LS Mean** & **LS Sigma** & **Homogeneous Groups** \\ \hline T\_ACK2 & 2453 & 4.45 & X \\ T\_ACK3 & 2485 & 4.44 & X \\ T\_ACK1 & 2647 & 4.38 & & X \\ \hline \hline \end{tabular}
\begin{tabular}{c c c c} \hline \hline
**ACK Timer (T\_ACK)** & **LS Mean** & **LS Sigma** & **Homogeneous Groups** \\ \hline T\_ACK3 & 2485 & 4.44 & X \\ T\_ACK1 & 2647 & 4.38 & & X \\ \hline \hline \end{tabular}
\begin{tabular}{c c c c} \hline \hline
**Limit to establish significant differences: 12.2** & & \\ \hline \hline \end{tabular}
\end{table} 
Table 11: Results of the Multiple Range Tests for the factor ACK Timer (T_ACK) using as dependent variable Convergence Time.