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Design and evaluation of flow handoff signalling for multihomed mobile nodes in wireless overlay networks
 

Summary: Design and evaluation of flow handoff signalling for
multihomed mobile nodes in wireless overlay networks
Qi Wang *, Robert Atkinson, John Dunlop
Mobile Communications Group, Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XW, UK
Received 18 May 2007; received in revised form 19 February 2008; accepted 19 February 2008
Available online 29 February 2008
Responsible Editor: W. Kellerer
Abstract
With the increasing deployment of wireless overlay networks, a mobile node with a range of network interfaces can be
connected to multiple heterogeneous or homogeneous access networks simultaneously. Such host multihoming technology
can be exploited to distribute (or hand off) application flows among the most appropriate interfaces and access networks
dynamically to achieve end-to-end seamless, robust and even quality-of-service-aware communications for mobile users. It
is essential that an efficient and effective flow handoff signalling scheme be in place. Nevertheless, little prior work has
addressed this problem sufficiently in a systematic way and little performance evaluation is readily available. We propose
a set of signalling procedures for a comprehensive, flexible yet standard-oriented flow handoff solution. Two candidate
schemes are designed by extending and optimising related IETF work based on Mobile IPv6 or Network Mobility
(NEMO). Theoretical analyses are performed and numerical results are then presented with a focus on signalling loads
to compare the two proposals and to demonstrate that the designs can largely meet the requirements on desired signalling
performance. Preliminary implementations and experimental results are also reported to validate the concepts of the
designs, investigate the flow handoff signalling delays and verify the effectiveness of the policy-based flow handoff support

  

Source: Atkinson, Robert C - Department of Electronic and Electrical Engineering, University of Strathclyde
Livingstone, Daniel - School of Computing, University of the West of Scotland

 

Collections: Computer Technologies and Information Sciences; Engineering