S. FILIPOSKA ET AL. 35
Figure 8. Average node load for the received network traffic
on a different terrain detail level.
5. Conclusions
In this paper we have presented an analysis of the influ-
ence of the terrain detail level on the path establishment
in wireless ad hoc network by exploring the changes in
the network connectivity graph. We have also investi-
gated the difference of the obtained results compared to
the behavior of a wireless ad hoc network deployed on a
flat terrain. The main conclusion is that the terrain de-
creases the number of links between the nodes, which
leads to longer paths and network partitioning. However,
this does not necessarily mean lower performance. On
contrary, the obstructions between the nodes can allevi-
ate the interference and, in some cases, improve the net-
work performances. Another goal of this work was to
determine the amount of terrain detail necessary to obtain
satisfyingly accurate results. The results show that when
using relatively small number of triangles to represent
the terrain, the network behavior is close to the most de-
tailed scenario, while the simulation runs several times
faster.
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