Research On Quality Of Service Guarantee In Wireless Mobile Internet

In the last few years we have seen an explosion in the number of notebook computers and in the growth of internet. With the rapid development of the Internet and mobile networks, there have been great demands for integrating the Internet and mobile networks to provide abundant services for mobile users. Mobile Internet is one of the trends of the next generation networks. Mobile IPv6 provides the foundation for mobile Internet with a solution for mobile hosts to transmit information when handover happens.Recently, How to assure quality of service of a IPv6 mobile network has been becoming the focus of telecommunication field more and more.Fast seamless handoff of mobile node has to be guaranteed. Mobility management has become one of the most important and essential elements in guaranteeing quality of service.In this paper, the mobile IPv6 technology is outlined. Then the issues of QoS in mobile IPv6 network is discussed, and several approaches about the issues of QoS such as and mobile IPv6 protocol and Mobility management are analyzed.Hierarchical Mobile IPv6(HMIPv6) utilizes a Mobility Anchor Point(MAP) to reduce the considerable number of Binding Updates(BU) among the Mobile Node(MN), Correspondent Nodes(CN), and its Home Agent(HA) when the MN frequently move among the Access Routers(AR). HMIPv6 is more effective in a wide area network having a multilevel hierarchy architecture. HMIPv6 allow the MN to select their own MAP, but a MN cannot know whether it has a high or a low mobility characteristic in a Multilevel Hierarchical Mobile IPv6(MHIPv6) network. Therefore, the MN cannot correctly select an appropriate MAP. This may cause that (1) frequent re-registrations of MN, (2) load concentration at a particular MAP. In this paper, a novel mobility management scheme is proposed by using the movement history of MNs and dynamic load management mechanism combined with Router Renumbering mechanism to select an appropriate MAP in MHIPv6 network. Experiment results show that this scheme achieves that (1) A MN can select an appropriate MAP according to the mobility type of the MN in the MHIPv6 network. (2) The frequent re-registrations of MN are reduced. (3) The load of MAP is balanced.