This directory contains mpeg-1 movies depicting the influence of
different radio ranges on the connectivity of a street-bound ad-hoc
network.
The car movements are taken from a bigger DaimlerChrysler scenario (2
lanes, one direction, night traffic).
The white node in the movies is the one the others move relative to,
i.e. in the scenario it moves to the right. For visualisation, it has
been frozen to the middle of the screen.
The fast lane is the upper one. (Legal ;-) ) Overtaking is done only
there. The yellow lines show if two nodes are in radio range.

What is to be seen is that the distribution of nodes is not
equal. Quite contrary, the cars tend to cluster in the act of
overtaking. This leads to partitioning. In the 250m radio range case,
the partitioning leading to bad multi-hop connectivity is quite
obvious. 

Supposedly, including the lanes oppositely directed would also
increase the overall connectivity.


---
This work was done in the process of routing evaluation for the
FleetNet project by the University of Mannheim and NEC Network Labs
Europe. Any comments or questions can be directed to.

Holger Füßler			fuessler@informatik.uni-mannheim.de
Dr. Hannes Hartenstein		hannes.hartenstein@ccrle.nec.de
Dr. Martin Mauve		mauve@informatik.uni-mannheim.de