ISSN : 1796-2021
Volume : 1    Issue : 6    Date : September 2006

On the Analysis of Mobility Mechanisms in Micro Mobile MPLS Access Networks
Rami Langar, Nizar Bouabdallah and Samir Tohme
Page(s): 18-27
Full Text:
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One of the major challenges for the next generation mobile systems is related to efficient mobility
management issue. In this paper, we propose a new micromobility management scheme, called
Micro Mobile MPLS, that supports both mobility and quality-of-service (QoS) management in
wireless networks. Our proposal includes two protocol variants. In the first variant, called FHMicro
Mobile MPLS, we consider the fast handoff (FH) mechanism, which anticipates the LSP (Label
Switched Path) procedure setup with an adjacent neighbor subnet that an MN is likely to visit. This
mechanism is proposed to reduce service disruption by using the link-layer (L2) functionalities. In
the second variant, called FC-Micro Mobile MPLS, the forwarding chain (FC) concept is provided
to track efficiently the host mobility within a domain. This concept is more suitable for MNs with high
mobility rate. In order to assess the efficiency of our proposals, all underlying protocols are
compared. To achieve this, we develop analytical models to evaluate the link usage cost, the
registration updates cost, the handoff latency and the packet loss rate. Numerical and simulation
results show that the proposed mechanisms can significantly reduce the registration updates cost
and provide low handoff latency and packet loss rate under various scenarios.

Index Terms
Mobile IP, MPLS, mobility tracking and modeling, micro-mobility, fast handoff, forwarding chain,
wireless systems.