9th International Conference on Cognitive Radio Oriented Wireless Networks

Research Article

CogLEACH: A Spectrum Aware Clustering Protocol for Cognitive Radio Sensor Networks

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  • @INPROCEEDINGS{10.4108/icst.crowncom.2014.255370,
        author={Rashad Eletreby and Hany Elsayed and Mohamed Khairy},
        title={CogLEACH: A Spectrum Aware Clustering Protocol for Cognitive Radio Sensor Networks},
        proceedings={9th International Conference on Cognitive Radio Oriented Wireless Networks},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2014},
        month={7},
        keywords={clustering cognitive radio wireless sensor networks},
        doi={10.4108/icst.crowncom.2014.255370}
    }
    
  • Rashad Eletreby
    Hany Elsayed
    Mohamed Khairy
    Year: 2014
    CogLEACH: A Spectrum Aware Clustering Protocol for Cognitive Radio Sensor Networks
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2014.255370
Rashad Eletreby1,*, Hany Elsayed1, Mohamed Khairy1
  • 1: Department of Electronics and Electrical Communications Engineering, Faculty of Engineering, Cairo University, Egypt.
*Contact email: reletreby@ieee.org

Abstract

The integration of cognitive radios and wireless sensor networks enables a new paradigm of communication in which, sensor nodes can avoid heavily crowded transmission bands by tuning their transmission parameters to less crowded bands thanks to the cognitive radio capabilities. In such setting, sensor nodes act as a secondary user, opportunistically accessing vacant channels within a band originally licensed to a primary user. In this paper, we discuss the problem of how to cluster cognitive radio sensor nodes in a dynamic frequency environment set by the primary users. We introduce Cognitive LEACH (CogLEACH), which is a spectrum-aware extension of the Low Energy Adaptive Clustering Hierarchy (LEACH) protocol. CogLEACH is a fast, decentralized, spectrum-aware, and energy efficient clustering protocol for cognitive radio sensor networks. CogLEACH uses the number of vacant channels as a weight in the probability of each node to become a cluster head. We show that CogLEACH improves the throughput and lifetime of the network compared to the regular LEACH protocol that is operating in the same settings.