“…For this reason, these approaches should be preferred. Proactive handoffs can trigger a migration procedure with respect to several criteria, such as monitoring the Receiver Signal Strength Indicator (RSSI) [6,7,8,9], using a set of defined quality parameters [10,11], and/or using a user-driven triggering [12]. In the direction of RSSI schemes, some of the above mentioned proactive solutions, such as [6,9] are based on a fixed threshold mechanism, that is, the handoff is initiated when the RSSI falls below a certain threshold.…”