DOI QR코드

DOI QR Code

A Model to Calculate the Optimal Level of the Cognitive Radiotelegraph

무선인지기능 무전기의 적정 재고수준 산정 모형에 관한 연구

  • Received : 2012.04.24
  • Accepted : 2012.07.13
  • Published : 2012.08.05

Abstract

Cognitive Radio(CR) is the technology that allocates the frequency by using dynamic spectrum access. We proposed a model to calculate the optimal level of the cognitive radiotelegraph, where secondary users opportunistically share the spectrum with primary users through the spectrum sensing. When secondary user with cognitive radio detects the arrival of a primary user in its current channel, the secondary user moves to the idle channel or be placed in the virtual queue. We assume that the primary users have finite buffers and the population of secondary users is finite. Using a two-dimensional Makov model with preemptive priority queueing, we could derive the blocking and waiting probability as well as the optimal level of cognitive radiotelegraph under a various range of parameter circumstances.

Keywords

References

  1. Ian F. Akyildiz, Won-Yoel Lee, Mehmet C. Vuran, Shantidev Mohanty, "Next Generation/Dynamic Spectrum Access/Cognitive Radio Wireless Networks : A Survey", Computer Networks Vol. 50, 2127-59, 2006. https://doi.org/10.1016/j.comnet.2006.05.001
  2. Mitola, J., Maguire, G. Q., "Cognitive Radio : Making Software Radios More Personal", Personal Communications, IEEE, pp. 13-18, 1999.
  3. Beibei, W., Zhu, J., K. J. Ray Liu, "Primary- Prioritized Markov Approach for Dynamic Spectrum Access", In Proc. of 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, pp. 507-515, 2007.
  4. Zhu, X., Lianfeng, S., Tak-Shing Peter Yum, "Analysis of Cognitive Radio Spectrum Access with Optimal Channel Reservation", IEEE Communications Letters. Vol. 11, No. 4, pp. 304-306, 2007. https://doi.org/10.1109/LCOM.2007.348282
  5. Heo, J., Shin, J., Nam, Y., Lee, J., Park, G., Cho, H., "Mathematical Analysis of Secondary User Traffic in Cognitive Radio System", in Proceedings pp. 21-24, 2008.
  6. Heo, J., Shin, J., Nam, Y., Lee, J., Park, G., Cho, H., "Performance Analysis of a Wireless Network with Opportunistic Spectrum Sharing", in Proc. IEEE Globecom'07, Washington, D.C., USA, pp. 4636-4640, 2007.
  7. Tang, S., Mark, B. L., "An Analytic Performance Model of Opportunistic Spectrum Access in a Military Environment", IEEE Communications Society Subject Matter Expert for Publication in the WCNC 2008 Proceedings., pp. 2681-2686, 2008.
  8. G. Latouche, V. Ramaswami, "Introduction to Matrix Analytic Method in Stochastic Modeling", Siam, 1999.