\begin{tabular}{|p{45pt}|p{28pt}|p{28pt}|p{33pt}|p{33pt}|}
\hline
& Tree-\par based & Mesh-\par based & Stateless \par
multicast& Overlay \par multicast \\ \hline
Periodic \par message & \rb{Yes} & \rb{Yes} & \rb{No} & \rb{No} \\ \hline
Robustness \par for mobility
& \rb{No} & \rb{Yes} & \rb{Yes} & \rb{Yes} \\ \hline
Resource \par efficiency
& \rb{High} & \rb{Low} & \rb{High} & \rb{Medium} \\ \hline
Type of \par data packet & Multi-\par cast
& Multi-\par cast & Broad-\par cast & \rb{Unicast} \\ \hline
Control \par overhead & \rb{High} & \rb{High} & \rb{Low} & \rb{Medium} \\ \hline
\end{tabular}