Impacts of mobility patterns on mobile IP handoff in wireless LANs
Issue title: Selected papers from the International Conference on Computer Science, Software Engineering, Information Technology, e-Business, and Applications, 2004
Affiliations: Computer and Electronics Engineering Department, University of Nebraska-Lincoln, USA
Correspondence:
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Corresponding author: Hamid Sharif, Department of Computer and Electronics Engineering, PK1 200, 1110 South 67th Street, University of Nebraska-Lincoln, Omaha, NE 68182, USA. E-mail: hsharif@unl.edu.
Abstract: Mobile IP has been adopted to provide seamless services to mobile nodes. Currently, there are many mobile IP handoff schemes proposed at different layers of the network protocol stack. However, the handoff performance under different mobility patterns in terms of velocity and path has been largely ignored by the current research work. In this paper, we present our study of the mobility pattern's impact on the performance of mobile IP handoff by theoretical analysis as well as NS-2 simulations, where both deterministic and hybrid models for mobility patterns have been adopted. Our results show that the performance of mobile IP handoff schemes is directly impacted by the mobility patterns. Moreover, the cross-layer handoff schemes outperform other mobile IP handoff schemes under different mobility patterns. We conclude that the routing update delay is one of main performance bottlenecks in mobile IP handoff. So we propose a new solution to reduce the routing update delay by considering the behaviors at the lower layers such as the link layer. Furthermore, our study also presents a platform for efficient network design due to the fact that the routing update delay is tightly coupled with the deployment of access points.
Keywords: Handoff, mobile IP, wireless LAN, mobility pattern
