Arquitetura de rede com suporte à mobilidade de fluxo IP e ao gerenciamento de Mobilidade Distribuído (DMM)

In the recent years, the development of new applications and mobile devices, has brought an increase in data traffic on mobile networks. To solve this problem, the offloading is presented as a viable solution in order to control the overload of the network and offer better quality of services. Some architectures have been proposed to make flow traffic, supporting flow mobility. On the other hand, several protocols for mobility management as MIP (Mobile IP) [1-2] (which is host-based) and PMIPv6 (Proxy MIP) [3] (which is network based) have been proposed. Said protocols are centralized, where all the data traffic goes through the same network entity, which is also in charge of mobility control. This feature leads to problems such as having a single point of failure, scalability and reliability. In order to solve these problems, came the distributed mobility management (DMM) [4], tending to show a better alternative, considering the problems relative to centralized proposals. In this dissertation we propose an architecture, SIFDMM (Seamless IP Flow and Distributed Mobility Management), to support distributed mobility management and IP flows mobility. The architecture is characterized by: i) is based on PMIPv6 protocol, and therefore, based on the network; ii) the mobility management is fully distributed; iii) it is assisted by the mobile terminal that supplies location information related to recently visited access routers; iv) integrates features of mobility management and data offloading on a network entity; v) the offloading is done at the network layer moving the IP flows. A comparison of the proposed architecture and two other architectures (centralized and partially distributed) is performed through analytical modeling and simulation. It is displayed a reduce in the flow handover latency (selective or total) in the proposed architecture in relation to the partially and centralized ones. The result also showed that the proposed architecture has good performance in video streaming transmission.