Analysis the impacts of data rates and Forward Access Channel Scheduling on QoS in 3G UMTS network

In the present world wireless and mobile communications have become a part and parcel of our modern life. As in third generation (3G) technology UMTS (Universal Mobile Telecommunication Systems) is tend to provide all kinds of service for example, data rate, audio, video etc, it needs improved Quality of Service (QoS). Forward Access Channel, one of the downlink transport channel, carries both control message and user data traffic from Radio Network Controller (RNC) to User Equipment (UE) in 3G UMTS network. We can improve the Quality of Service (QoS) of various traffic classes using forward access scheduling in Radio Network Controller (RNC). This paper presents an analysis the impacts of both data rates and this Forward Access Channel Scheduling on Quality of Service (QoS) of various traffic classes in 3G UMTS network and try to focus on end to end delay using Opnet Modeler simulation and try to investigate how End to End Delay in second varies in different classes such as Conversational class, Streaming class, Interactive class, Background class according to Priority Weights as well as we investigate the impacts of data rates.