The notion of Mobile IP (MIP) has been developed to support mobility of mobile nodes over the Internet. But MIP has many drawbacks like frequent registration of care-of-address, triangular routing, etc. To overcome the frequent registration, hierarchical mobility management scheme for mobile IP networks (HMIP) has been suggested. The signaling cost and communication overhead due the registration procedure have been reduced by minimizing frequent home registrations and enabling the regional registration using gateway foreign agent (GFA). A chain of foreign agents is being formed to localize the registration. Dynamic hierarchical mobility management scheme for mobile IP networks (DHMIP) has been proposed to reduce long packets delivery delays involved in long chain of foreign agents (FAs). However, DHMIP does not include any user movement-based strategy to minimize the cost of mobility management. In this paper, we have proposed a user movement-based adaptive hierarchical mobility management (A-HMIP) scheme for IP networks. In the proposed scheme, neighbor FAs are made aware of the movement of mobile user to enable pre-location registration. We have presented analytical modeling which shows that proposed scheme outperforms DHMIP scheme.
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