A NEW MECHANISM IN HMIPV6 TO IMPROVE MICRO AND MACRO MOBILITY

The paper proposes new mechanism in Hierarchical Mobile IPv6 (HMIPv6) implementation for utilization in IPv6 Enterprise Gateway. This mechanism provides seamless mobility and fast handover of a mobile node in HMIPv6 networks. Besides it provides continuous communication among a member of HMIPv6 components while roaming. The mechanism anticipates future movement of mobile node and accordingly provides an effective updating mechanism. A bitmap has been proposed to help in applying the new mechanism as will be explained throughout this paper. Instead of scanning the prefix bits which might be up to 64 bits for subnet discovery, about 10% of this length will be sufficient to determine the hierarchical topology. This will enable fast Micro and Macro HMIPv6 in Enterprise Gateway.