Scalable and QoS capable MPLS-based micro-mobility management

This paper presents a novel MPLS-based micro-mobility scheme by integrating MPLS and hierarchical mobile IPv6 (HMIPv6). It exploits the scalable QoS support capability of DiffServ-aware MPLS traffic engineering. Aggregated traffic of mobile users is forwarded through traffic engineered LSPs established along links with available resources. Moreover, traffic flows of different priority receive differentiated services. In order to eliminate the data transfer between the IP and MPLS software modules at the LSPs connecting two LSPs, the virtual LSP scheme is introduced, which improves the forwarding scalability. The basic idea is to establish virtual routes upon the pre-established traffic engineering LSPs. The proposed scheme is evaluated by simulations