Research And Implementation Of Mobile IPv6 Handover Performance Measurement

With the rapid development of mobile communication technology and continuous increase of mobile equipments on Internet, it is becoming more and more urgent to promote the technology of Mobile IPv6. Mobile IPv6 handover is the process of a mobile node moving from one point of mobile IPv6 attachment to the Internet to another different point of mobile IPv6 attachment. The spread of the Mobile IPv6 technology depends on the performance of the Mobile IPv6 handover. Measuring and analyzing the performance of handover can discover its drawbacks, find its performance bottlenecks, optimize handover method, promote the quality of mobile network service and make great sense to the evolution and maintenance of the network performance. This paper originates from Mobile IPv6 handover measurement system which is developed with the cooperation of France Telecom. It analyses and researches the Mobile IPv6 handover performance through measurement. The system has been applied at present. The main contributions of this paper include:(1) Proposed a measurement method based on two Ethernet adapters for Mobile IPv6 handover performance measurement. It uses two Ethernet adapters to measure handover performance at the same time. One is used to capture the packets in WLAN through passive measurement; another is used to communicate with correspondent node and to take active measurement. Based on the method solves the problem which needs to collect data on a number of nodes and implemented centralized data collection. The method uses the combination of active and passive measurement to measure the handover performance metrics. Passive measurement gets the handover time and the handover state of the mobile node. Active measurement completes the Mobile IPv6 handover performance measurement from network layer to application layer, analyses the handover performance from 3 to 7 layer and positions the performance bottleneck of Mobile IPv6 handover.(2) Implemented a Mobile IPv6 handover performance measurement system. The system uses hierarchical framework and modular design. It has good scalability for clear system structure and flexible configuration. The system uses two-Ethernet adapters-based measurement method. It has ability to measure the Mobile IPv6 handover performance from network layer to application layer. A task queue measurement module to task parallel measurement is designed in the system and can carry out 48 measurement tasks simultaneously. Graphical user interface, which is easy to operate, provides real-time analysis and displays of measurement results. The system supports long-term historical data analysis through the database which preserves and manages the measurement data.(3) Set up a Mobile IPv6 handover measurement testbed, on which the Mobile IPv6 handover measurement system designed by us is used. The following is noted from the experimental results. Two performance bottlenecks of Mobile IPv6 handover is care-of address configuration and binding update. Mobile IPv6 handover performance can fulfill some non real-time applications. But it will cause network congestion and lead network real-time applications can not be used if handover frequently happens. There are great differences between current Mobile IPv6 handover and the seamless handover performance. Therefore, it still needs improving.