Definition of: beaconing

(1) A continuous signaling of error conditions on a LAN. In
a token ring network, a beacon frame is sent by the adapter
if a failure in the line is detected. 

(2) In a wireless network, the continuous transmission of
small packets (beacons) from the access point (base station)
that advertise its presence. The mobile units sense the
beacons and attempt to establish a wireless connection