User Movement-Based Hierarchical Mobility Management Scheme (UM-HMIP) for IP Networks

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 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 hierarchical mobility management (UM-HMIP) scheme for IP networks which outperforms DHMIP. UM-HMIP reduces the paging cost and provides pre-registration notion to enable the seamless mobility.