Estimating the speed of a mobile user terminal within a wireless environment and estimating the time when a mobile user terminal would reach a coverage border of the access point it is currently associated with. In particular, the present system is concerned with calculating a time (T) the terminal would take to move from a point A, after it has stopped making received signal level measurements, to another point B, at the coverage border of the access point, independently of any medium-specific parameters. This way, the present system enhances Quality of Service by properly estimating the speed and time and enabling a terminal, or an entity in the network, to take preemptive actions to ensure optimal QoS.