## 3 Proposal Architecture  
This section describes the proposed network architecture. Figure 1 illustrates the general system. The proposed system architecture consists of: (a) Mobile monitoring node; (b) WSN Infrastructure; (c) SINK; (d) Remote monitoring and alert interfaces.  
\begin{table}
\begin{tabular}{|c|c|c|c|c|c|} \hline
**Platforms/Requirements** & **Code Blue [20]** & **MEDiSN [21]** & **MASN [22]** & **KNOWME [23]** & **LOBIN [24]** \\ \hline
**Reliability Mechanism** & \begin{tabular}{c} None \\ (Unreliable \\ Multicast) \\ \end{tabular} & \begin{tabular}{c} Two-Tier \\ Architecture with \\ Dedicated Wireless \\ Backbone and \\ Optimized Rate \\ Control Protocols \\ \end{tabular} & \
\begin{tabular}{c} Dynamic \\ Reliability \\ \end{tabular} &
\begin{tabular}{c} Multithreading \\ collector \\ \end{tabular} & Packet Loss Rate \\
**Scheme for** \\
**Energy** & Not Provided & \begin{tabular}{c} Division of \\ functionality \\ between acquiring \\ and relaying data \\ \end{tabular} & \begin{tabular}{c} Energy-aware \\ cluster formation \\ using energy \\ level \\ determination of \\ sensor nodes \\ \end{tabular} & \
\begin{tabular}{c} A combination of \\ data buffering, \\ adaptive sensor \\ throttling, and \\ dynamic selection \\ of data transmission \\ methods \\ \end{tabular} &
\begin{tabular}{c} Assumes the loss of a \\ small percentage of \\ packets and compensates \\ bandwidth restrictions of \\ the IEEE 802.15.4 \\ technology with a careful \\ design of several \\ communication protocols \\ \end{tabular} \\ \hline
**Routing Methodology** & \begin{tabular}{c} Multicast and \\ multi-hop \\ routing \\ \end{tabular} & \
\begin{tabular}{c} Many-to-one and \\ one-to-one \\ communication \\ \end{tabular} &
\begin{tabular}{c} Intra-Cluster and \\ Inter-Cluster Data \\ Relay \\ \end{tabular} & None. Star topology & Dynamic Source Routing \\ \hline
**Techniques for Mobility** & \begin{tabular}{c} Periodic \\ Flooding for \\ Route \\ Discovery \\ \end{tabular} & \begin{tabular}{c} Physiological \\ monitors, \\ periodically select \\ the best relay point \\ to forward their data \\ \end{tabular} & \begin{tabular}{c} None. Does not \\ support real-time \\ data collection \\ under mobility \\ conditions \\ \end{tabular} & \
\begin{tabular}{c} Nokia N95 \\ capabilities on \\ LAN/MAN \\ (WiFi, 3G, EDGE) \\ \end{tabular} &
\begin{tabular}{c} Wireless \\ Communications \\ Infrastructure Subsystem \\ \end{tabular} \\ \hline
**Data Security** & Not Provided & \begin{tabular}{c} Only the \\ source/destination \\ can decipher the \\ encryption \\ \end{tabular} & \
\begin{tabular}{c} End-to-end \\ medical data \\ through \\ crypto-keys \\ \end{tabular} &
\begin{tabular}{c} Not Specified \\ \end{tabular} \\ \hline
**Supported Application** & \begin{tabular}{c} Medical Care \\ and Disaster \\ Response \\ \end{tabular} & \begin{tabular}{c} Emergency \\ Detection \\ \end{tabular} & \begin{tabular}{c} Real-time \\ collection of ECG \\ Data \\ \end{tabular} & \
\begin{tabular}{c} General monitoring \\ \end{tabular} &
\begin{tabular}{c} Real-time collection And \\ Emergency Detection \\ \end{tabular} \\ \hline
**Sensor Scalability** & \begin{tabular}{c} Not Specified \\ \end{tabular} & \
\begin{tabular}{c} supports motes with \\ different sensor \\ suites \\ \end{tabular} &
\begin{tabular}{c} Yes, it can \\ increase the \\ number of \\ sensors (Does not \\ Specify which) \\ \end{tabular} & Not Specified \\ \hline \end{tabular}
\end{table}
Table 1: E-Health Platform Comparison.