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A Scheme for Load Distribution and Macro Mobility in Hierarchical Mobile IPv6  

Seo, Jae-Kwon (Department of Information and Communication Engineering, Sejong University)
Lee, Kyung-Geun (Department of Information and Communication Engineering, Sejong University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.4, 2007 , pp. 49-58 More about this Journal
Abstract
Hierarchical Mobile IPv6 (HMIPv6) has been proposed by Internet Engineering Task Force (IETF) to compensate for such problems as handover latency and signaling overhead in employing Mobile IPv6 (MIPv6). HMIPv6 supports micro-mobility within a domain and introduces a new entity, namely mobility anchor point (MAP) as a local home agent. However, HMIPv6 causes load concentration at a particular MAP and longer handover latency when inter-domain handover occurs. In order to solve such problems, this paper establishes a virtual domain (VD) of a higher layer MAP and proposes a MAP changing algorithm in which the routing path changes between mobile node (MN) and correspondent node(CN) according to the mobile position and the direction of the MN before inter-domain handover occurs. The proposed algorithm not only enables complete handover binding-update of the on-link care of address (LCoA) only when inter-domain handover occurs, but concentrated load of a particular MAP is distributed as well. This is because the MNs registered with higher layer MAP and lower layer MAP coexist in the VD. We simulate the performance of the proposed algorithm and compare with HMIPv6.
Keywords
HMIPv6; MAP changing; handover; mobility;
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