Performance Improvement of Fast Handovers for Mobile Ipv6
Mobile Ipv6 (MIPv6) is designed to support IP mobility management in the Internet. The fast handovef fof Mobile Ipv6 (FMIPv6) is an extension of Mobile Ipv6. Because FMIPv6 provides the information for layer 2 (L2) handover in advance, the layer 3 handover procedure could start early in order to reduce the handover latency. However, the handover latency of FMIPv6 is still remaining large which is hardly to meet the requirements of real-time applications. To deal with this, we propose a modified fast handover scheme named as Improvement FMIPv6 (called I-FMIPv6) to reduce the overall latency on handover. In I-FMIPv6, when the Mobile Node (MN) receives a Fast Binding Acknowledgment (FBAck) message with the New Care- of Address (NcoA) acceptance, it will send an Binding Update (BU) message to the Correspondent Nodes (CNs) to update the MN’s new CoA before the 1.2 handover occurs. Thus, -FMIPv6 con void circle routing, wrong order and handover latency can be reduces up to 16.79%, the average throughput measured since MN lost connection to Previous Acces Router (PAR) till getting stable connection to New Access Router (NAR) can be increases up to 2.57% compared with FMIPv6 at the speed of the moving vehicles in the inner city.