Heterogeneous wireless networks face challenges in ensuring smooth mobility between WLAN and LTE, as traditional handover decisions based on signal strength often degrade service quality. A more advanced approach incorporates multiple network parameters like signal power, link speed, system delay, and user mobility for optimized vertical handover. Real-time throughput calculations and dynamic network ranking enhance selection, while MCDA techniques improve transfer continuity, reduce delays, and minimize packet loss. Simulation results confirm that this strategy outperforms conventional methods by reducing handover failures and improving network selection. Additionally, advanced techniques like FSHO and SSHO are explored for seamless multimedia services in 5G networks.