Research On Routing Theory And Key Technologies In Mobile Internet

There are, in retrospect, three phases in the development of traditional telecommunication networks. The first phase is based on wired signal transmissions. The second phase is founded on wireless communications. Nowadays, it has been turned into the third phase that includes wireless communications and mobile communications. It is reasonable that the development of Internet is as above mentioned, namely from fixed wired Internet to wireless Internet and then developed to Mobile Internet.The connection method of traditional Internet is mainly "fixed and wired", lacking of the support on mobility in aspects of route, multicast and management. And the characteristics of wireless environment were not taken into consideration. It is obvious that the traditional Internet can't satisfy the requirements of Mobile Internet. Therefore, it is in dire need of breaking through the original design idea of traditional Internet and starting the research on the mechanism, theory and key technologies for the next generation of Mobile Internet. The research aspects include the theory and method of the Mobile Internet architecture, theory and arithmetic of routing protocol in the Mobile Internet, theory and protocol of multicast in the context of Mobile Internet, theory and technology of wireless IP Internet based on IPv6, and so on. As the routing theory is the hardcore of Mobile Internet, the emphases of this thesis are the routing theory and key technologies in Mobile Internet. There are several research points shown as follows:â‘ A new routing optimization mechanism in the Mobile Internet is presented. The routing optimization problems in Mobile Internet are analyzed first. Then a new routing optimization mechanism is given. Finally action of every entity, address assignment policy and fast handoff algorithm are described in the framework of the new mechanism.â‘¡A new mobile routing protocol adapting to the Mobile Internet is established.. Firstly, the traditional routing protocols are analyzed and compared. Secondly, a new option in Router Advertisement is introduced, which is used to carrying routing information. And a new mobile routing protocol is proposed based on this option. Thirdly, the route maintaining and updating arithmetic, action of every entity, and Data Structures in the new routing protocol are detailedly discussed.â‘¢The management mechanism in the Mobile Internet is raised. Firstly, the traditional mobility management technologies are analyzed and summarized. Then, based on the characteristics of the Mobile Internet, the location management mechanism and handoff management scheme in the Mobile Internet is given.It is verified that the theories and key technologies presented in this thesis are able to solve the routing optimization, routing discovery and management problems in the Mobile Internet by the results of analysis and simulations. Those theories and technologies can be provided as the basis and supports for the routing research in the Mobile Internet. So it is beneficial to accelerating the development of the next generation information networks, the Mobile Internet in particular.