Enhancing the Performance of Low Priority SUs Using Reserved Channels in CRN

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El-Toukhy A. T., ARSLAN H.

IEEE Wireless Communications Letters, vol.9, no.4, pp.513-517, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 4
  • Publication Date: 2020
  • Doi Number: 10.1109/lwc.2019.2961354
  • Journal Name: IEEE Wireless Communications Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Page Numbers: pp.513-517
  • Keywords: Cognitive radio, Markov model, channel allocation, spectrum access, capacity, spectrum utilization
  • Istanbul Medipol University Affiliated: Yes


Cognitive radio networks (CRNs) are considered a promising solution for spectrum resources scarcity and efficient channel utilization. In this letter, multi-dimensional analytical Markov model based on reservation channel access scheme and channel aggregation method is proposed to enhance spectrum utilization, capacity of low priority secondary users (SUs) and reducing handoff probability of SUs. Moreover, the proposed method improves the performance of high priority SUs by providing the capability to resume the connection after dropping. The numerical results indicate that the modified reservation access model can enhance the performance of SUs compared to the traditional basic random access model.