Mobile IPv6: Mobility in a Wireless Internet
Mobile IPv6: Mobility in a Wireless Internet
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Hierarchical Mobile IPv6 (HMIPv6) was proposed by the Internet Engineering Task Force (IETF) for efficient mobility management of Mobile IPv6 nodes. In HMIPv6, when a mobile node moves access router in the different MAP domain, such a movement is called macro mobility handover. In this situation, the mobile node creates new RCoA and LCoA and performs registrations with the new MAP and HA. Especially, until the address registrations with an MAP and HA are completed, the mobile node cannot receive IP packet and it is hard to actualize seamless services. Therefore, we need to execute the macro mobility handover in advance to reduce the handover latency and packet loss. We propose a scheme that is able to improve the macro mobility handover efficiently in HMIPv6. To do this we will adjust the user's mobility patterns to edge access routers between different MAP domains in the handover situation. In this paper, we compare cost of the macro mobility handover of the proposed scheme with that of the original HMIPv6. As a result, we can obtain the improved macro mobility handover in HMIPv6.