Abstract Channel scanning is the major factor that affects the handover delay in IEEE 802.11 networks. Many approaches have been proposed to reduce the scanning time. None of them, however, studied the performance of channel scanning in IEEE 802.11e network, which introduces a set of priorities for different class of services. In this paper we propose a prediction-based smart scanning, considering different priorities. We also analyzed the performance of channel scanning depending on the number of active stations in the certain access category (AC).