The UltraSAN software package has been used to model, simulate, and
analyze both the scheduling and call admission aspects of
the iWANDeR QoS work.
This software was developed and is distributed by the Performability
Engineering Research Group
(PERFORM)
at the University of Illinois.
By modeling the wireless network using stochastic activity networks (SANs),
we have been able to verify the packet scheduling results and delay
distributions from our custom simulator, as well as evaluate and refine
the work on our call admission algorithm.
More information regarding the various aspects of the simulator, and the
methods in which it was used for our research can be found on the links
below.
-
Information on the software, user manual, and how to obtain the package.
-
General introduction to SANs.
Scheduling
- Papers:
These papers describe the modeling of the scheduler using
UltraSAN as well as perform a comparison to the original
simulation data.
- Model:
The USAN model (zipped tar file),
and associated documentation (postscript file)
is provided below.
Call Admission
- Papers:
This paper describes the Call Admission algorithm,
presents the model used in the simulations, and compares the
algorithm to a number of different call admission schemes.
- Model:
The USAN models (zipped tar files),
and associated documentation (postscript files)
for all simulated call admission algorithms are provided below.
The basic call admission model was used as the foundation for
all of the different algorithms. Each specific scenario was
then modified to reflect the particular parameters of the
algorithm being evaluated.