# Security Scheme Based on Parameter Hiding Technic for Mobile Communication in a Secure Cyber World
## 5 Performance Analysis  
The performance analysis environment is shown in Table 3. It was carried out on the LTE mobile network components--UE, eNB, and MME.  
All three initial attach processes evaluating network components include an initial attach with an IMSI process. The arithmetic operation such as hash and s-box function of the encryption algorithm is carried out between the UE and the MME; therefore, based on the initial attach with the IMSI between the UE and the MME node, the average of delay and overhead (time (s)), the average delay (s), the average transmission rate (traffic received (bits/s)), and the arithmetic operation of the encryption algorithm was measured and compared. Additionally, the terminals were analyzed based on the units of 1, 50, and 100 machine (s), because the number of terminal users in the base station could be increased.  
Since the existing initial attach does not compute encryption operation, time was excluded. We also found that the delay according to the encryption operation in the proposed scheme decreased a little because there was no packet switching or transmission other than the original initial access process. It was analyzed and evaluated: it did not have a delay on the transmission rate according Tables 4 and 5.  
The maximum permissible delay in the LTE access network, defined in 3 GPP (TS 23.203), is 30 ms for Voice over Internet Protocol (VoIP). Based on VoIP with the lowest delay, the overhead and delay turned out to be 35.5% and 33.0%, respectively, for the arithmetic operation of encryption, so we found that the initial attach of the proposed scheme had less overhead and fully satisfied the maximum permissible delay as shown Table 6.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Device**} & \multicolumn{3}{c}{**Summary (Based on VoIP 100\%)**} \\ \cline{2-4}  & **Time (s)** & **Delay (s)** & **Traffic Received (bits/s)** \\ \hline
1 & 36\% & 40\% & 1\% \\
50 & 34\% & 32\% & 0.9\% \\
100 & 36\% & 28\% & 0.9\% \\ Total Avg. & 35.5\% & 33.0\% & 0.93\% \\ \hline \hline \end{tabular}
\end{table}
Table 6: Summary of performance analysis.  
\begin{table}
\begin{tabular}{c c c} \hline \hline \multirow{2}{*}{**Variable**} & **Values** & **Description** \\ \hline Cell & 1 & - \\ Number of UE & 1, 50, 100 & - \\ Test time & 9000 s & Initial data (0–150 s) not reflected \\ Initial Attach Attempt Cycle & 150 s & The UE service uses initial attempt only \\ Portability Model & Deactivation & - \\ \hline \hline \end{tabular}
\end{table}
Table 3: Performance analysis environment.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Device**} & \multicolumn{3}{c}{**Proposed Initial Attach**} \\ \cline{2-4}  & **Time (s)** & **Delay (s)** & **Traffic Received (bits/s)** \\ \hline
1 & - & 0.004700 & 1.234 \\
50 & - & 0.007260 & 1.249 \\
100 & - & 0.010292 & 1.039 \\ \hline \hline \end{tabular}
\end{table}
Table 4: Performance analysis: Proposed process.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Device**} & \multicolumn{3}{c}{**Proposed Initial Attach**} \\ \cline{2-4}  & **Time (s)** & **Delay (s)** & **Traffic Received (bits/s)** \\ \hline
1 & 0.0113 & 0.007715 & 1.159 \\
50 & 0.0105 & 0.010539 & 1.331 \\
100 & 0.0114 & 0.014576 & 1.108 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Performance analysis: Proposed process.