Hi,

       I'm running a mobile object tracking application on TOSSIM. My
application has a mobile node. All the other (static) nodes in the network
periodically send PROBE messages to detect the mobile node. On receiving any
such PROBE message, the mobile node sends a BEACON frame to the sender of
the PROBE frame, so that the sender of the PROBE effectively "detects" the
presence of the mobile node. *I want the network to have a particular
spanning-tree based topology, but I'm not sure how to encode this
information in TOSSIM.* In TinyViz, there are ways to specify grid-based,
random and grid+ random topologies, but if I want to do it without TinyViz,
how can it be done?



       Also, *if I want to specify some communication range for the mobile
node, how can it be done?* I don't want the BEACON messages to reach all the
nodes in the network because that it unnecessary, more importantly, nor do I
want the PROBE messages from all the static nodes to reach the mobile node,
because I want to simulate a situation where the mobile node is in the
vicinity of one particular static node, or in a limited region of the
network at a single point of time, otherwise the whole concept of location
tracking becomes meaningless.



  Thanks in advance

                            Bibudh
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