Nothing shows the actuality of my thesis better, than the continuously increasing number of mobile internet users alongside with the rising demand for mobile broadband and the ever-growing number of research areas that relay on mobile data traffic. Serving these demands is a challenge for the Mobile IP protocol. In mobile networks with centralized architecture, the increasing load is directed to a few, central network nodes, which have to provide extreme stability. But these nodes are barely capable of serving the heavy load. To solve this problem the concept of distributed network architecture was introduced.
In the first part of my thesis I will describe the structure of Mobile IPv6 networks, and the most significant extensions for Mobile IPv6 protocol. Through these I will be able to show the problems and weaknesses of centralized network architectures. After this I will explain some solutions for the previous problems, and introduce the most significant functional and architectural improvements aiming to eliminate these weaknesses. Finally I will give a more detailed description of decentralized network architecture.
After the theoretical background follows the presentation of my simulations, implemented in the INET/OMNET++ simulation framework. With the help of the simulations I will be able to observe and compare centralized and decentralized architectures. First I presentthe details and the main steps of implementation, and then I introduce and explain the simulation results of the two different approaches in terms of scalability.