Research On Mobility Management Methods In Hierarchical Multi-hop Mobile Wireless Networks

Now, many researchers are interested in the development of the new mobile communication technique and information based on self-organization. With the Ad hoc network apparition, this system will be the favorite topic. Ad hoc would be widely applied in wireless apparatuses, with the higher the memory ability and the compute ability, the lower the energy consume, the mobile communication's extension. In the future we can see more and more Ad hoc networks.Hierarchical Multi-hop Mobile Wireless Networks(HMWN) is a special Ad hoc network. HMWN contains two kinds of nodes, mobile users and wireless routers. Only mobile users can be sources and destinations of user data traffic, and only routers can perform the functions of routing and forwarding, as well as the organization of the network. The architecture of mobile switches forms as Ad hoc networks while the architecture between mobile routers and mobile users is similar to that of the cell mobile communication system. So HMWN inherits the advantages of both Ad hoc networks and the cell mobile communication systems. In general, the mobility management is the set of mechanisms providing time- varying mapping between the identifier of mobile users and their addresses (i.e., where the users are located with respect to the network structure). The main function of mobility management is to effectively support the seamless roam of mobile users, equipments and services within the whole service network. These characters of HMWN make it very important of mobility management. However, there are still several problems existed.This dissertation studies mobility management in HMWN. HSR is analyzed, its shortages are showed. According as the methods of the normal mobile communication systems, a scheme based forward pointer is applied in HMWN and simulated by software. At last, we give the conclusion and the issues that could be deeply researched.