Efficient mobility management mechanisms for next generation wireless networks

In next generation wireless networks, mobile users will roam across different wireless access networks. Mobile IP is employed as the mobility management protocol in the all-IP wireless environment. But mobile IP has scalability problem when dealing with micro-mobility and cannot provision QoS for multimedia applications of mobile users. In this paper, we propose dynamic hierarchical mobile MPLS (DHMM) protocol for micro-mobility management, at the same time facilitating the system with traffic engineering and QoS provisioning capabilities. By employing DHMM protocol in the all-IP wireless access network, the end-to-end delay can be considerably reduced and the traffic distribution in the network can be well balanced through MPLS traffic engineering