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Mobility Management

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Mobility Management
3rd International Conference: Sciences of Electronic, Technologies of Information and Telecommunications March 27-31, 2005 – TUNISIA

SETIT 2005

Mobility Issues in Hierarchical Mobile IP
Aisha H. A. Hashim, Farhat Anwar, Shaffiah Mohd and Hatina Liyakthalikh
Department of Electrical and Computer Engineering Faculty of Engineering International Islamic University Malaysia aisha@iiu.edu.my farhat@iiu.edu.my shaffiah@yahoo.com hatina_banun@yahoo.com Abstract: Mobile IP is a powerful protocol that supports Internet mobility. Micro-mobility approach was introduced because Mobile IP suffers in case of frequent movement, i.e. intra-domain mobility. Micro-mobility protocols aim to handle local movement of Mobile Nodes (MNs) without interaction with the Home Agent (HA) through the Internet. This has the benefit of reducing delay and packet loss during handoff and eliminating registration between MN and possibly distant Home Agents (HA) when MN remain inside their local coverage areas. The Hierarchical Mobile IP (HMIP) protocol handles Mobile IP registration locally using a hierarchy of foreign agents. In HMIP, registration messages are sent by the MNs to update their respective location information. This registration messages will establish tunnels between neighboring foreign agents along the path from the mobile node to a gateway foreign agent (GFA). This will form a network of tunnels where packets addressed to the MN will travel. The aim of this research is to study and evaluate HMIP protocol. The paper presents mobility issues in HMIP. The performance analysis of the protocol is carried out using NS-2 simulator. Some recommendation was suggested to improve mobile communication in HMIP. Key words: Hierarchical, Mobile IP, Micro-mobility, Performance Analysis.

1 Introduction
Mobile IP is an Internet standards protocol, which enhances the existing Internet Protocol (IP) to accommodate mobility. Over the Internet, when a Mobile Node (MN) moves and attaches


References: [1] Andrew T.Campbell, Javier Gomez, Sanghyo Kim, and Chieh-Yih Wan, Columbia University Zoltan R.Turanyi And Andras G.Valko, Ericsson Research, “Comparison of Micromobility Protocols”, http://diuf.unifr.ch/pai/education/2002_2003/seminar/w inter/telecom/00986462.pdf [2] Benny Chew, “Handoff and Routing of Micromobility Protocols”, http://www.columbia.edu./itc/ee/e6951/2002spring/Proj ects/CVN/report12.pdf. [3] Claude Castelluccia, “Toward a Hierarchical Mobile IPv6”,http://www.inrialpes.fr [4] Debalina Ghosh, “Mobile IP”, http://www.acm.org/crossroads/xrds7-2/mobileip.html [5] Haverinen H. and Malinen, J. “Mobile IP Regional Paging,” Internet draft, http://ftp.uos.ac.kr/p/document/internet-drafts/drafthaverinen-mobileip-reg-paging-00.txt [6] Zhang X., Castellanos J., Campbell A., Sawada K., Barry M., “P-MIP : Minimal Paging Extensions for Mobile IP, Internet Draft, draft-zhang-pmip-00.txt [7] Xavier Peerez Costa and Hannes Hartenstein, “A simulation study on the performance of Mobile IPv6 in a WLAN-based cellular network”. (b) (c) Figure 8. Recommended Handoff Operation in HMIP
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