Hello,
the attached example script is for network emulation, but you should be
able to use the error modeling for a simulation as well.
The lines 55 - 62 create an object in each node for error modeling. It
drops 1 percent of the packets.
proc UniformErr {} {
set err [new ErrorModel]
$err unit packet
$err set rate_ 0.01
$err ranvar [new RandomVariable/Uniform]
$err drop-target [new Agent/Null]
return $err
}
Line 89
-IncomingErrProc UniformErr
is also important. It is more realistic to use IncommingErrProc, because
in this case each node determines whether it receives a packet or not on
its own. Therefore a subset of all nodes around receive a packet. In the
case of OutgoingErrProc all the nodes around either receive a packet or not.
Regards,
Svilen
[EMAIL PROTECTED] wrote:
Dear ns users,
Would you please send me examples for Error modeling in ns-22.9.
how to model that with wireless nodes.
The ns tutorial is not good enough.
thank you in advance.
Regards
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| M.Sc. Svilen Ivanov |
| Institute for Distributed Systems (IVS) |
| Otto-von-Guericke University - Magdeburg |
| http://ivs.cs.uni-magdeburg.de/~svilen/ |
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