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Abstract
Number of mobile communications is increasing at a phenomenal rate. Supporting
mobility will make a decisive different to the Internet’s future performance.
MIP is a proposed standard that builds on the Internet protocol by making mobility
transparent to applications and higher levels protocols like TCP. In this
thesis we present performance measurements of IP-based mobility protocols
with respect to many system parameters such as signaling overload, packets
delay and packets loss to show their ability in supporting micro/macro/globallevel
mobility. Then, we introduce a simulation model for measuring MIPv6
performance in view of packets delay due to supporting mobility. A comparison
between IPv4 and IPv6 in supporting mobility is given. We present new
proposals for using MIP in IP-based wireless systems. First proposal shows
that using priority scheduling for packets forwarded from old FA to new FA
after handover can improve network performance and prevent the problem of
receiving disordered packets at new FA after mobile node’s handover process.
Then we present a model for using MIPv6 in request routing in IP-based CDNs
which eliminates relaying on DNS-based request routing. Next, a performance
evaluation of IGWs discovery schemes used in connecting MANET to the Internet
is presented. We compare these IGWs discovery schemes with respect
to signaling overhead and packets delay. Finally, we describe a new method
for handling the triangle routing problem encountered in MIP. The method
uses a new MGR at the connection points between networks for solving the
problems of conventional route optimization procedure. In each proposal we
present a simulation model and some numerical examples to show the significance
and validity of the proposal and its reliability in achieving the requested
improvement.