The proliferation of wide band wireless networks and the availability of abundant services through the Internet have necessitated a ubiquitous access to the Internet by mobile hand-held devices such as hand phones, laptop computers, and personal digital assistants (PDAs). Researches on mobility management of a single mobile node in the existing cellular networks as well as in the IP-based networks have extensively been done by the respective research communities. However, as new networking systems such as network mobility and overlapped heterogeneous access networks have been emerging, mobility management of mobile nodes to maintain seamless network connectivity in these systems is being a challenging task. In this dissertation, we present our research on designing, modeling, evaluating, and optimizing the mobility management solutions in regard to these networking systems. Network mobility management: Network mobility (NEMO) management concerns with mobility management of an entire network (called mobile network) that provides an uninterrupted Internet connectivity to many mobile devices moving together in the mobile network. Although the NEMO basic support protocol, developed by the Internet Engineering Task Forc
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