Quality of service performances of video and voice transmission in universal mobile telecommunications system network based on OPNET

The universal mobile telecommunications system (UMTS) has distinct benefits in that it supports a wide range of quality service (QoS) criteria users require order to fulfill their requirements. transmission video and audio real-time applications places high demand on the cellular network, therefore QoS is major problem these applications. ability provide UMTS backbone network necessitates an active mechanism maintain necessary level convenience networks. For networks, investigation models for end-to-end QoS, total transmitted received data, packet loss, throughput providing techniques are run assessed simulation results examined. According results, appropriate adaption allows specific voice transmission. Finally, by analyzing existing parameters, performance 4G/UMTS networks may be improved.