Designing a Vertical Handover Algorithm for Security-Constrained Applications

In heterogeneous networks (HetNets), the vertical handover (VHO) is an essential process for mobile users (MUs) aiming to secure ubiquitous connectivity and maintain highest quality of service (QoS) across various types radio access technology (RAT), such as wireless fidelity (Wi-Fi), global system communication (GSM), universal telecommunications (UMTS). literature, many recent VHO research works have been proposed in which a number critical issues still arise when performing seamless handover, including packet loss, delay, throughput. Moreover, security aspect triggering has not carefully considered, particularly MU intends use payment application. this paper, we present comprehensive performance evaluation new algorithm, taking into account all above issues, co-located Wi-Fi UMTS networks. The simulation results are compared with media independent (MIH) IEEE 802.21 standard, facilitates transfer connection among We show that algorithm outperforms MIH standard terms throughput providing uninterrupted security-constrained applications.