A method, an apparatus, and a carrier medium to determine the location of a wireless
station (a client station of a wireless network or a potential rogue access point).
The method includes accepting an ideal path loss model and calibrating the ideal
model using path loss measurements between access points at known locations. The
calibrating determines a calibrated path loss model between the access points.
The method further includes determining path losses between the wireless station
of unknown location and at least some of the access points. In the case the wireless
station is a client station, the determining includes receiving measurements from
the wireless station of unknown location measuring the received signal strengths
as a result of respective transmissions from at least some of the access points
at known respective transmit powers. In the case the wireless station is an potential
rogue access point, the determining includes receiving measurements from at least
some of the access points measuring the received signal strength at each of the
access points resulting from transmission by the potential rogue access point for
each of a set of assumed transmit powers for the potential rogue. The method further
includes determining the likely location or locations of the wireless station using
the measured path loss and the calibrated path loss model.