Network Performance Optimization And Realization Of Mobile Subnet Based On PMIPv6Protocol

ABSTRACT:With the development of mobile Internet and wireless access technology, people can get convenient network service everywhere. Proxy Mobile IPv6(PMIPv6) protocol as the next generation of Internet mobility management protocol, received much attention. People have done much research on it because of its advantages in mobility management. Some drafts of the IETF working group have described questions and scenarios for PMIPv6terminals and mobile subnet support in detail. They also formed some mobility management scheme. But they didn’t consider impacts from the increasing number of mobile nodes, the diversification of access technology and the frequent handover on network performance of PMIPv6.Relying on the National Science and Technology Support Program, this paper designed and implemented a mobile subnet PMIPv6protocol optimization scheme by studying the deficiencies of current PMIPv6protocol performance in supporting mobile subnet, and by optimizing the common mobile network protocol(C-NEMO).This paper briefly introduces the development, application and research of PMIPv6, illustrates the necessarity of the content of this paper, and then analyzes the key technologies related to this paper and communication mechanism of PMIPv6mobile subnet protocol C-NEMO. In order to solve the problems of protocol performance, this paper proposes a network layer listening mechanism in the access stage which allows multi interfaces to access the PMIPv6domain at the same time. This mechanism could identify and detect the access technology of mobile nodes, increase the compatibility of PMIPv6protocol to support variety of mobile terminal, improve the ability of PMIPv6domain while providing data communication for a plurality of mobile terminals, and keep the downlink data going to the correct address. At the stage that the mobile node completed the PMIPv6registration and kept data communication with other node, this paper proposes bulk binding uptate mechanism to reduce the signaling overhead and number signaling interactions between local mobility anchor (LMA) and mobile access gateway (MAG), improving the efficiency of the network functional entities to manage the mobile node. At the stage that the mobile node handover between different MAG domain, this paper proposes transient binding pre-switching mechanism to reduce the handover delay and packer loss and improve the communication performance, during the time that the mobile nodes handover between MAG This paper realizes the design of the optimization with programming, describes the principle and optimization algorithm of the mechanisms in the various stages, resolves the configuration of the core code and data structures, and clarifies the considerations in practical applications of the program. This paper sets up a test environment in the laboratory. The optimization program was tested in laboratory and compared with C-NEMO scheme to illustrate the feasibility and effectiveness of this program optimization.