Estimation of the Number of Contending Secondary Users in Distributed Cognitive Radio Environment with Non-Saturated Traffic Patterns 


Vol. 44,  No. 3, pp. 490-497, Mar.  2019
10.7840/kics.2019.44.3.490


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  Abstract

In the case of the Primary User in a cognitive wireless network, a Secondary User must protect the primary user by interrupting the transmission or changing the channel. Because of this feature, it is necessary to monitor the spectrum state and judge whether or not to transmit the data. Though various methods for improving the performance of the CR network have been proposed, they focused on SUs with saturated traffic patterns, in which SUs always have the traffic to be transmitted. Furthermore, existing methods did not consider the number of contending SUs, and thus have limitations in providing optimal control effects. In this paper, we propose a method to estimate the number of contending SUs for transmission in a distributed cognitive radio environment. The proposed method considers the practical operational environments, in which SUs generate traffic in a non-saturated manner. Experimental results show that the proposed method accurately estimates the number of contending SUs that vary with the activity of the PU.

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  Cite this article

[IEEE Style]

G. Lee, B. Roh, J. Oh, S. Kang, D. Kim, "Estimation of the Number of Contending Secondary Users in Distributed Cognitive Radio Environment with Non-Saturated Traffic Patterns," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 3, pp. 490-497, 2019. DOI: 10.7840/kics.2019.44.3.490.

[ACM Style]

Gyu-min Lee, Byeong-hee Roh, Jimyeong Oh, Sungjin Kang, and Do-kyung Kim. 2019. Estimation of the Number of Contending Secondary Users in Distributed Cognitive Radio Environment with Non-Saturated Traffic Patterns. The Journal of Korean Institute of Communications and Information Sciences, 44, 3, (2019), 490-497. DOI: 10.7840/kics.2019.44.3.490.

[KICS Style]

Gyu-min Lee, Byeong-hee Roh, Jimyeong Oh, Sungjin Kang, Do-kyung Kim, "Estimation of the Number of Contending Secondary Users in Distributed Cognitive Radio Environment with Non-Saturated Traffic Patterns," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 3, pp. 490-497, 3. 2019. (https://doi.org/10.7840/kics.2019.44.3.490)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880