1. A method comprising:transmitting, by an access point, a beacon message;
setting, by the access point, a receiver of the access point to first and second sensitivity thresholds at which transmissions occurring on a wireless channel can be detected, wherein the access point is associated with two or more other apparatuses;
detecting, by the access point, whether transmissions are occurring on the wireless channel with the receiver set to the first sensitivity threshold during a first period within a beacon period and with the receiver set to the second sensitivity threshold during a second period within the beacon period; and
determining the second sensitivity threshold based on a poorest quality link amongst links between the access point and the two or more other apparatuses.