Cumulative Noise and 5.9 GHz DSRC Extensions for ns-2.28

The network simulator ns-2 is a widely used tool in the field of
wired and wireless communications research. Although the ns-2
implementation is in constant evolution, it fails, for obvious
reasons, to reflect all aspects related to the newest
communication technologies.
One example of such technology is 5.9GHz Direct Short Range
Communications (DSRC) for vehicular environments, which is
currently attracting attention due to its promises to reduce the
amount of road fatalities and improve vehicular traffic
efficiency on public roads. The IEEE 802.11p group is currently
developing a standard to enable future 5.9GHz DSRC based
inter-vehicle communications.
In this report, we describe the modifications realized in ns-2
in order to model more accurately future wireless communications
in vehicular environments. Section 2 reports the extensions
performed to the PHY and MAC modules in order to include
cumulative noise capabilities. Note that vehicular environments
are specially sensible to the way interferences are modeled
since safety related information will be commonly transmitted in
a broadcast fashion. Section 3 describes the adjustments
... mehr
required to the MAC and PHY modules to reflect the behavior
described in the current draft of IEEE 802.11p.