Centralized, Distributed or Replicated IP Mobility?

This letter studies a network-based IPv6 mobility model based on Proxy Mobile IP, called Multiple Local Mobility Anchors. It replicates the Local Mobility Anchors of Proxy Mobile IP through access routers and gateways of the network. The Local Mobility Anchors maintain the binding between the well-known IPv6 address of the mobile node and its current access router, in order to achieve an optimized routing path to data sessions that require mobility support. Multiple Local Mobility Anchors approach is compared with Proxy Mobile IP and Distributed Mobility Anchoring through analytical models. The outcome demonstrates that it significantly improves the data cost at the expense of a slight increase in the signaling cost.