[Tinyos-help] Can we change the channel BER during the simulation of TOSSIM

Baozhi Chen bc2009 at gmail.com
Thu Dec 20 02:32:54 PST 2007


Hi,

As I read the documents by Dr. Levis (written in 2003), I found that it
seems you can not change the BERs during the simulation.
For example, if I want to model a time-varying channel instead of static
channel, I will need to change the BER during simulation.
So far from the documents, a configuration file for channel BERs are used
and read during the simulation. I wonder if I change these
parameters during the simulation, whether the simulator will notice it and
change the BERs accordingly.

The other way mentioned is to use TinyViz, a tool provided by Tinyos. But it
can only change BER depending on the change of topology (ie. distance
between nodes, etc) and use Gaussian packet loss probability distribution
for each distance, which may not fit if other distribution
is used.

Let me know if you know there is updated information regarding this. Thanks.

Baozhi
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