ORBIT-USER: Setting up Topologies

Reza Lotun rlotun at cs.ubc.ca
Fri Aug 24 17:16:21 EDT 2007


Hello,

I'd like to pose a general question to the list. Has anyone attempted
(and successfully) deployed arbitrary topologies on the grid.

A clarification. According to the orbit wiki, the Orbit approach to
creating arbitrary (multi-hop) topologies is to use noise injection:
http://www.orbit-lab.org/wiki/HowTo/UseNoise
As far as I can see, the idea is to inject constant background white
gaussian noise to raise the noise level, so that only more powerful
signals can be discerned.

I'm interested in simulating a real wireless network deployed in a
large space operating in convential infrastructure mode - this means
that some nodes will naturally be out of range of one another. Is
there ever a danger when injecting noise that the nodes will naturally
back-off since they sense transmission? Is anyone using orbit to test
non-mesh-like 802.11 topologies, that is, the tree topology of
client->access_point common to infrastructure networks?

Thanks!
Reza



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