IEEE 802.11 based wireless networks (WLAN) has emerged as an accelerated distribution method and been deployed in a wide manner across the globe especially in the last decade.Mobility support is usually the primary motivation in these methods. Seamless handoff is one of the significant challenges in mobile networks, especially for real-time streaming applications, which has a strong requirement for timely delivery of information like Voice over IP(VoIP).Roaming initiates handoffs between different access interfaces and dissimilar networks, providing the need for an effective handoff technique in a heterogeneous environment

Vertical handoff, Wireless Networks, Artificial intelligence, Multi-criteria, Heterogeneous Networks