Abstract

Cognitive radio technology is an emerging technology which would enable a set of secondary users (SU) to opportunistically use the spectrum allocated to a primary user (PU) and has potential to serve as a solution to spectrum inefficiency and spectrum shortage problems. However, SUs face number of challenges based on the fluctuating nature of the available spectrum. When PU arrives on a specific frequency band, any SU occupying this band should free the channel for PUs which is referred as Spectrum Mobility. It is an important but unexplored event in cognitive radio network. This paper is a brief overview on the reason, mechanism, challenges and their solutions in spectrum mobility.

References

• FCC, ET Docket No 03-222 Notice of proposed rulemaking and order, December 2003.
• Akyildiz, Ian F. , Won-Yeol Lee, and Kaushik R. Chowdhury. "CRAHNs: Cognitive radio ad hoc networks. " Ad Hoc Networks 7. 5 (2009): 810-836.
• Akyildiz, Ian F. , et al. "NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey. " Computer Networks 50. 13 (2006): 2127-2159.
• Van Tam Nguyen, Frederic Villain and Yann Le Guillou. "Cognitive Radio RF: Overview and Challenges. "Hindwai Publishing Corporation VLSI design Volume 2012, Article ID716476, 13 pages.
• Kaniezhil. R, Daniel Nesa Kumar. C and Prakash. A, "Fuzzy Logic System for Opportunistic Spectrum Access using Cognitive Radio", International Journal of Scientific & Engineering Research Vol. 10, Issue 1, No 1, January 2013
• Giupponi, Lorenza, and Ana I. Pérez-Neira. "Fuzzy-based spectrum handoff in cognitive radio networks. " Cognitive Radio Oriented Wireless Networks and Communications, 2008. CrownCom 2008. 3rd International Conference on. IEEE, 2008.
• R. Kaniezhil, Dr. C. Chandrasekar, "Comparing Spectrum Utilization using Fuzzy Logic System for Heterogeneous Wireless Networks via Cognitive Radio", International Journal of Scientific & Engineering Research, Volume 3, Issue 7,July 2012, pp. 1 - 10.
• Wang, Li-Chun, and Chung-Wei Wang. "Spectrum handoff for cognitive radio networks: Reactive-sensing or proactive-sensins?" Performance, Computing and Communications Conference, 2008. IPCCC 2008. IEEE International. IEEE, 2008.
• C-W. Wang and L-C. Wang, "Modeling and Analysis for Proactive-decision Spectrum Handoff in Cognitive Radio Networks", IEEE International Conference on Communications, June 2009
• Wang, Chung-Wei, Li-Chun Wang, and Fumiyuki Adachi. "Modeling and analysis for reactive-decision spectrum handoff in cognitive radio networks. "Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE. IEEE, 2010.
• Morteza Mehrnoush, V. T. Vakili. "proactive srv spectrum handoff protocol based on gcs scheme in cognitive radio adhoc network. " International Journal of Power Control Signal and Computation (IJPCSC) Vol. 5. No. 1. pp. 1-08, Jan-March 2013
• Song, Yi, and Jiang Xie. "On the Spectrum Handoff for Cognitive Radio Ad Hoc Networks without Common Control Channel. " Cognitive Radio Mobile Ad Hoc Networks. Springer New York, 2011. 37-74.
• Salem, Tarek M. , et al. "Efficient Spectrum Management: Challenges and Solution. " http://www. academia. edu/7684823/Efficient_Spectrum_Management_Challenges_and_Solutions
• Lee, Won-Yeol, and Ian F. Akyildiz. "Spectrum-aware mobility management in cognitive radio cellular networks. " Mobile Computing, IEEE Transactions on11. 4 (2012): 529-542.
• Balogun, Victor. "Challenges of Spectrum handoff in Cognitive radio networks. "Pacific Journal of Science and Technology 11 (2010): 304-314.
• Wang, Li-Chun, and Chen Anderson. "On the performance of spectrum handoff for link maintenance in cognitive radio. " Wireless Pervasive Computing, 2008. ISWPC 2008. 3rd International Symposium on. IEEE, 2008.
• Abdel-Hamid, Ayman T. , Ahmed H. Zahran, and Tamer ElBatt. "Improved spectrum mobility using virtual reservation in collaborative cognitive radio networks. " Computers and Communications (ISCC), 2013 IEEE Symposium on. IEEE, 2013.
• Zahed, Salah, Irfan Awan, and Andrea Cullen. "Analytical modeling for spectrum handoff decision in cognitive radio networks. " Simulation Modelling Practice and Theory 38 (2013): 98-114.
• Zhang, Caoxie, and Kang G. Shin. "What Should Secondary Users Do Upon Incumbents' Return?" Selected Areas in Communications, IEEE Journal on31. 3 (2013): 417-428.
• Lertsinsrubtavee, Adisorn, Naceur Malouch, and Serge Fdida. "Controlling spectrum handoff with a delay requirement in cognitive radio networks. "Computer Communications and Networks (ICCCN), 2012 21st International Conference on. IEEE, 2012.
• Cordeiro, Carlos, et al. "IEEE 802. 22: the first worldwide wireless standard based on cognitive radios. " New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005. 2005 First IEEE International Symposium on. IEEE, 2005.