Authors:
Norbert Jordan
and
Alexander Poropatich
Affiliation:
Vienna University of Technology, Austria
Keyword(s):
Mobile IPv6, Fast MIPv6, Wireless LAN, Link-Layer Triggering, Fast IEEE 802.11 Handover.
Related
Ontology
Subjects/Areas/Topics:
Data Communication Networking
;
Enterprise Information Systems
;
Information and Systems Security
;
Mobile Software and Services
;
Network Management
;
Performance Analysis of Wireless Networks
;
Software Agents and Internet Computing
;
Telecommunications
;
Ubiquitous Wireless Services and Protocols
;
Wireless and Mobile Computing
;
Wireless and Mobile Technologies
;
Wireless Information Networks and Systems
Abstract:
The standard Mobile IPv6 specification provides comprehensive mobility management for the IPv6 proto-col. During the handover there is a period in which the mobile node is unable to send or receive packets due to link-layer switching and IPv6 protocol layer operations. This overall handoff latency resulting from base-line MIPv6 procedures, namely movement detection, new care-of address configuration, and binding up-dates with peer entities, is often unacceptable for any kind of real-time service (video-conferencing, voice-over-IP,…). A new fast handover approach, based on Fast Handovers for Mobile IPv6, is proposed in this paper, which will support seamless movement in between IPv6 domains using a IEEE 802.11 network infra-structure. A new low latency handoff method for IEEE 802.11 will be proposed, where access point beacons are utilized for carrying IPv6 prefix information without altering the Mobile IP or IEEE 802.11 specifica-tions. A WLAN service will continuously monitor the ra
dio signal quality of the attached access point and, if necessary, will switch to another access point in range. This feature and the elimination of firmware-based active scanning during link-layer handovers have the flavor effect of reducing the overall link-layer handoff delay to about 10%. We will further introduce our wireless testbed infrastructure for evaluation of the pro-posed approach. Performance evaluation is used to verify the effectiveness of our implementation and an extensive simulative comparison is used for scalability analyses.
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