QoS-capable micromobility MPLS and its prototype implementation

Micromobility MPLS (MM-MPLS) is a new protocol, proposed recently through our research group, which extends use of multiple protocol label switching (MPLS) in micro mobility environment. The protocol provides better performance in several respects, one of them been handoff delay. In MM-MPLS, the depth of handoff-related changes is limited up to crossover router, rather than up to foreign domain agent. Also, soft-state location management using RSVP-TE is adopted. The issue of quality of service (QoS) provision in a micromobility MPLS environment involves path redirection at crossover routers, resource reservation while redirecting path, and admission control with priority for handoff traffic. A prototype of MM-MPLS is implemented on Linux 2.4 and has been deployed on our experimental testbed. This deployment demonstrates MM-MPLS´ s practicality and applicability in a real mobile networking environment.