A hierarchical micro-mobility management model with QoS capability

The design of micro-mobility management protocols stands out as an important challenge in integrating wireless networks into the IP-based Internet, especially when such networks are deployed for real-time multimedia applications. We present a new hierarchical model for micro-mobility management with quality of service (QoS) capability for the wireless access network. The scheme includes an anchor selection and anchor optimization algorithm with QoS support, and efficient techniques for intra-anchor handoff, inter-anchor handoff, and paging management. In addition to QoS support, the proposed scheme has the advantages of robustness, scalability, load balancing and fast handoff. Simulation results of our model indicate that it provides good handoff performance in the presence of multiple QoS classes of applications.