چکیده (انگلیسی):

The rejection of an ongoing connection/session is serious problem
and it degrades the QoS and efficiency of the network rather than rejecting a
request for new connection. The impact on performance of handovers is a
serious problem in cellular systems that must be addressed. During handover
there may be delay in packets and connections may drop. Real time
applications i.e., VoIP and streaming video can be adversely affected by such
kind of delays. In this study we used TCP and UDP as an underlying protocol
for exchange of data between two wireless mobile nodes in a WiMax access
network and had evaluated the effect on performance in terms of end-to-end
delay and throughput. The results showed that when handover is triggered the
transfer window resets to zero causing higher throughput and end-to-end
delay for TCP than UDP based on packet size and traffic load.