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ThinkMind // COCORA 2016, The Sixth International Conference on Advances in Cognitive Radio // View article cocora_2016_2_20_80009


Analyzing the Effect of Spectrum Mobility on Mobile IPv6 in Cognitive Radio Networks

Authors:
Manoj Kumar Rana
Bhaskar Sardar
Swarup Mandal
Debashis Saha

Keywords: Cognitive Radio Network; Spectrum Mobility; IP handoff; MIPv6; Throughput; Simulation; ns-3

Abstract:
In cognitive radio (CR) networks, the secondary users (SUs) may encounter frequent IP handoffs due to high spectrum mobility, even if they remain static spatially i.e., their network attachment does not change. However, mobile IPv6 (MIPv6) was not originally designed to deal gracefully with such handoffs induced by spectrum mobility only. As a result, the performance of the data applications running in SUs may degrade severely. This paper presents a simulation based investigation to gauge the seriousness of the issue and to suggest possible solutions. We have developed a CR Attribute Model, and implemented MIPv6 over it in the well-known simulator ns-3. For SUs, we have considered three spectrum selection strategies, namely Greedy (GDY), Most Recently Used (MRU), and Least Frequently Used (LFU). In each case, we have analyzed how the number of IP handoffs increases with rise in spectrum mobility, resulting in degraded throughput performance in SUs. Our study reveals that MIPv6 is unable to work properly in CR networks mainly due to high default values of router advertisement (RA) interval, lifetime period of care-of-address (CoA), and duplicate address detection (DAD) period. So, we need to customize MIPv6 – in terms of appropriating the pre-set values of RA interval, lifetime for CoA, and DAD period – to make it work properly in CR networks, where spectrum mobility is high.

Pages: 26 to 32

Copyright: Copyright (c) IARIA, 2016

Publication date: February 21, 2016

Published in: conference

ISSN: 2308-4251

ISBN: 978-1-61208-456-5

Location: Lisbon, Portugal

Dates: from February 21, 2016 to February 25, 2016

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