A Mobility Tracking Model and Handoff Performance Analysis for Wireless MPLS Networks

In this paper, we propose an analytical approach to study the handoff performance of a wireless system with a new micro-mobility support called Micro Mobile MPLS. Our scheme includes two protocol variants. First, the fast handoff process, which anticipates the LSP procedure setup with an adjacent neighbor subnet that an mobile node (MN) is likely to visit, is provided to reduce service disruption. Second, a new mechanism based on the forwarding chain concept is proposed to track efficiently the host mobility whithin a domain. This concept can significantly reduce the registration updates cost and provide low handoff latency and packet loss rate. Analytical models, which capture the mobility behavior of an MN, are developed for cost analysis. Numerical and simulation results are given to justify the benefits of our proposed mechanisms.