While studies specifying generic integration architectures are
abundant, little or no studies are dedicated for applications
performance over such heterogeneous networks. The purpose of this
research is to evaluate the performance of integrated UMTS and WLAN
network by using two types of standard integrated models proposed
by 3GPP, open coupling and loose coupling together with network
layer mobility management scheme such as Mobile IP.In this research
we calculate the different application's traffic our concluded
results shows that page response time is smaller for loose coupling
scheme as compare to open coupling scheme although difference is
not so much wide, pageresponse time increases with the passage of
time because number of users increases as the time passes. Same is
In case for FTP, download response time for FTP is smaller in case
of loose coupling scheme. We have also calculated the WLAN
performance parameters (delay and throughput) and UMTS downlink
traffic sent and received. We have discussed in detail architecture
and functionalities of UMTS and WLAN, mobile IP, standard
interworked UMTS and WLAN models proposed by 3GPP.
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