Mobile data communication is today evolving from circuit switched 
            to packet switched connections to be able to bring forward the Mobile 
            Internet. Useful services in the mobile world are corporate access, 
            E-mail and WAP/WWW browsing. To be able to predict how packet based 
            services performs over the not yet released EGPRS radio network traffic 
            models is used. These are combined with system simulators that describe 
            the characteristics of the radio network. 
          
In this work a WAP traffic model has been developed with the purpose 
            to modulate the WAP user behaviour in a radio cellular network. The 
            resulting traffic model is based on WAP traffic studies in real networks 
            and experience from other traffic models. 
        
The traffic model was implemented in a radio network simulator in 
            order to evaluate the WAP performance. Results for WAP over EGPRS 
            and GPRS was studied and compared with earlier results for the WWW 
            service both on user and on system level. Since most traffic in a 
            mobile network is assumed to be access to services only downlink traffic 
            was considered in this report.