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ThinkMind // International Journal On Advances in Telecommunications, volume 9, numbers 3 and 4, 2016 // View article tele_v9_n34_2016_3


Performance Analysis of Mobile IPv6 under Spectrum Mobility in Cognitive Radio (CR) Networks

Authors:
Manoj Kumar Rana
Bhaskar Sardar
Swarup Mandal
Debashis Saha

Keywords: Cognitive Radio Network; Spectrum Mobility; Simulation; ns-3; Mobile IPv6 (MIPv6); IP handoff.

Abstract:
In cognitive radio (CR) networks, the secondary users may encounter frequent IP handoffs due to high spectrum mobility, even if they remain static spatially. Since mobile IPv6 (MIPv6) is not originally designed to deal gracefully with such IP handoffs induced by spectrum mobility only, the performance of the IP-based applications running in secondary users (SUs) may degrade severely in such scenarios. This paper conducts a simulation based investigation to gauge the seriousness of the issue and then suggests possible solutions. To do so, we have first developed in ns-3 a CR Attribute Module, and then implemented MIPv6 over it. For SUs, we have considered three spectrum selection strategies, namely Greedy, Most Recently Used, and Least Frequently Used. In each case, we have analyzed how the frequency of IP handoffs varies with the rise in spectrum mobility, resulting in degraded throughput in SUs. Our study reveals that MIPv6 is unable to work properly in CR networks mainly due to the high default values of MIPv6 parameters. So, we propose to customize mobile IPv6 – in terms of appropriating the pre-set values of its parameters – in order to make it work properly in CR networks, especially where the spectrum mobility is high.

Pages: 55 to 67

Copyright: Copyright (c) to authors, 2016. Used with permission.

Publication date: December 31, 2016

Published in: journal

ISSN: 1942-2601

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