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    Modeling of initial contention window size for successful initial ranging process in IEEE 802.22 WRAN cell

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    Publication date
    2015-02
    Author
    Afzal, Humaira
    Awan, Irfan U.
    Mufti, Muhammad R.
    Sheriff, Ray E.
    Keyword
    Base station; BS
    ; Customer premise equipment; CPE
    ; Medium access control; MAC
    ; Cognitive radio; CR
    ; Wireless regional area network; WRAN
    ; Ranging request collision probability
    ; Cognitive radio networks
    ; Simulator
    ; Protocol
    ; Module
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Avoiding collision among contending customer premise equipments (CPEs) attempting to associate with a base station (BS) in a wireless regional area network (WRAN) is a challenging issue. The collision probability is highly dependent upon the size of the initial contention window and the number of contending CPEs. To reduce the collision probability among CPEs in order to start the ranging process in an IEEE 802.22 network, the BS needs to adjust the initial contention window size. This paper provides an analytical framework to estimate the ranging request collision probability depending upon the size of the initial contention window and the number of CPEs attempting to join the IEEE WRAN cell. The accuracy of the estimated curve is analyzed for various numbers of contention CPEs on the basis of the relative errors. The numerical results confirm that the approximation works reasonably well for finding the ranging request collision probability for any number of contention CPEs at a particular value of initial contention window size. Moreover, this approximation provides the threshold size for a contention window to start the initial ranging process for any number of CPEs in an IEEE 802.22 network. (C) 2014 Elsevier B.V. All rights reserved.
    URI
    http://hdl.handle.net/10454/9110
    Version
    No full-text available in the repository
    Citation
    Afzal H, Awan IU, Mufti MR et al (2015) Modeling of initial contention window size for successful initial ranging process in IEEE 802.22 WRAN cell. Simulation Modelling Practice and Theory. 51: 135-148.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.simpat.2014.11.007
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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