Throughput Analysis for the Opportunistic Channel Access Mechanism in CRNs with Imperfect Sensing Results

  • Shiying Ge
  • Shunfu JinEmail author
  • Wuyi Yue
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 383)


In order to reduce the average delay of secondary user (SU) packets and adapt to various tolerance for transmission interruption, in this paper, we propose a novel opportunistic channel access mechanism in cognitive radio networks (CRNs). Considering the preemptive priority of primary user (PU) packets, as well as the sensing errors caused by SUs, we can model the network system as a priority queue with two classes of packets, however, these two classes of packets may interfere with each other. We first analyze the stationary distribution of the queueing model, then we derive the expression for the throughput of SU packets. Finally, we provide numerical experiments to optimize the energy sensing threshold with a maximum throughput of SU packets.


Cognitive radio networks Opportunistic channel access Sensing threshold Throughput 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.School of Information Science and EngineeringYanshan UniversityQinhuangdaoChina
  2. 2.Key Laboratory for Computer Virtual Technology and System Integration of Hebei ProvinceQinhuangdaoChina
  3. 3.Department of Intelligence and InformaticsKonan UniversityKobeJapan

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