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Adaptive management of cognitive radio networks employing femtocells

Research output: Contribution to journalJournal article

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  • Anwer Al-dulaimi
  • Alagan Anpalagan
  • Saba Al-rubaye
  • Qiang Ni
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<mark>Journal publication date</mark>12/2017
<mark>Journal</mark>IEEE Systems Journal
Issue number4
Volume11
Number of pages12
Pages (from-to)2687-2698
<mark>State</mark>Published
Early online date27/04/16
<mark>Original language</mark>English

Abstract

Network planning and management are challenging issues in a two-tier network. Tailoring to cognitive radio networks (CRNs), network operations and transmissions become more challenging due to the dynamic spectrum availability. This paper proposes an adaptive network management system that provides switching between different CRN management structures in response to the spectrum availability and changes in the service time required for the radio access. The considered network management system includes conventional macrocell-only structure, and centralized/distributed structures overlaid with femtocells. Furthermore, analytical expressions of per-tier successful connection probability and throughput are provided to characterize the network performance for different network managements. Spectrum access in dynamic radio environments is formulated according to the quality of service (QoS) constraint that is related to the connection probability and outage probability. Results show that the proposed intelligent network management system improves the maximum capacity and reduces the number of blocked connections by adapting between various network managements in response to free spectrum transmission slots. A road map for the deployment and management of cognitive macro/femto networks is also presented.

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©2017 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.