The traffic generator tool first obtains the state transition probability
between any two states as follows. Let be the sum of the output
rates out of state
, that is,
, where
is the transition rate from state
to
. Then the
transition probability from state
to
is
.
Assume that the system is at the state . Since the amount of time in
is
a random variable exponentially distributed with rate
, a sample of
this random variable is first generated. Clearly, the number of bytes that must
be sent till be next transition is
. The traffic generator
then generates a random sample to determine the next state from the state
transition probabilities (the
) and the process continues till the
total generation time is reached.
Guilherme Dutra Gonzaga Jaime 2010-10-27