Network allocation vector (NAV)-based opportunistic prescanning process for WLANs
S.W. Kim, Byeonghak Kim, Yuguang Michael Fang · Electronics Letters · 2010
Tracking neighbouring access points (APs) or channels is an essential function to achieve fast handoff over WLAN. However, scanning other channels interrupts the ongoing communications of a station. To minimise this, the proposed method utilises a network allocation vector (NAV) to scan neighbouring channels, so that a station is able to track neighbouring APs without additional communication interruptions.