def rtsnav(self, p, *args, **kwargs):
"""Overloaded to add RSH to NAV."""
nav = DCF.rtsnav(self, p, *args, **kwargs)
# add RSH + SIFS
d = self.sifs + self.rshduration
nav += int(d*1e6)
return nav
def rshnav(self, data, *args, **kwargs):
"""Calculate NAV value for RSH.
:param data: DATA packet.
:param args: Arguments passed on to `DCF.rtsnav()`.
:param kwargs: Keywords passed on to `DCF.rtsnav()`.
:return: Integer; representing NAV value.
This method computes the RSH NAV as follows:
NAV = SIFS + DATA + SIFS + ACK
:note: This method uses `DCF.rtsnav()` to calculate the new NAV value.
"""
# Use regular RTS NAV (i.e. from DCF) to compute new NAV value
rtsnav = DCF.rtsnav(self, data, *args, **kwargs)
d = self.sifs + self.ctsduration
nav = rtsnav - int(d*1e6)
return nav
