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Mobile Information Systems
Volume 3, Issue 2, Pages 55-70
http://dx.doi.org/10.1155/2007/919807

Taxonomy and Analysis of IP Micro-Mobility Protocols in Single and Simultaneous Movements Scenarios

G. De Marco,1 L. Barolli,1 and Salvatore Loreto2

1Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi-ku, Fukuoka 811-0295, Japan
2Dipartimento di Informatica e Sistemistica, University of Naples "Federico II", via Claudio 21, 80125, Napoli, Italy

Received 24 May 2007; Accepted 24 May 2007

Copyright © 2007 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The micro-mobility is an important aspect in mobile communications, where the applications are anywhere and used anytime. One of the problems of micro-mobility is the hand-off latency. In this paper, we analyse two solutions for IP micro-mobility by means of a general taxonomy. The first one is based on the Stream Control Transmission Protocol (SCTP), which allows the dynamic address configuration of an association. The second one is based on the Session Initiation Protocol (SIP), which is the most popular protocol for multimedia communications over IP networks. We show that for the SCTP solution, there is room for further optimisations of the hand-off latency by adding slight changes to the protocol. However, as full end-to-end solution, SCTP is not able to handle simultaneous movement of hosts, whose probability in general cannot be neglected. On the other hand, the SIP can handle both single and simultaneous movements cases, although the hand-off latency can increase with respect to the SCTP solution. We show that for a correct and fast hand-off, the SIP server should be statefull.