Techniques Mobile Internet Switching

With the rapid development of mobile Internet and the growth in the number of mobiledevices, people’s demand of the mobility of the network is growing. In the current Internetarchitecture, IP address is on behalf of the user’s identity, and represents the Locationidentification, bearing the double semantic information. IP addresses’ semantic overloadingrestricts the performance of mobile Internet. Therefore, Locator/ID Separation Protocol hasbecome the hot of mobile Internet research. This thesis optimizes the mobility managementmechanism based on LISP protocol, and reduces the handover latency and packet loss rate,thereby improving the performance of switching.This thesis researches the mobility management mechanism based LISP protocol. At first, itintroduces the principle of mobile IPv6, FMIPv6and HMIPv6handover scheme, and thenanalyzes the LISP protocol in detail. After the analysis of the current technologies, thisdissertation proposes a novel scheme (PMF-LISP) to deploy ping-pong handover of Mobile IPunder LISP protocol. The main research work is as follow.(1)Based on the framework of the LISP agreement, this thesis proposes a ping-pong movingfast switching scheme. In existing mobility management mechanism based on the LISP protocol,the tunnel interface router requests new mapping information，at the same time it will remove theold information. For ping-pong effect, when MN moves back to the original network, it needs toregister the mapping information again. This process will inevitably lead to a large number ofsignaling overhead and reduce the switch efficiency. In order to solve this problem, this thesisproposes a fast switching method based on LISP protocol. The new scheme defines mappingstatus table, which is used to store the old and new mapping information during ping-pongmovement. By optimizing the mapping mechanism in the process of ping-pong handover, itreduces the handover delay and improves the throughput and data communication.(2) The experimental verification of improvement scheme. The simulation tracks theexperimental data during ping-pong movement. By comparative analysis, the PMF-LISP schemecan provide better mobile support in the terms of handover latency and throughput.