Evaluating frame structure design in WiMAX relay networks

Abd Elhamid M. Taha, Pandeli Kolomitro, Hossam Hassanein, Najah Abu Ali

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)


    This paper evaluates the effect of the choice of frame structure type in WiMAX networks employing non-transparent relay stations (ntRS). The IEEE 802.16j-2009 amendment allows two frame structure types, single frame and multiframe. Thus far, a comparison of the two choices, in terms of network performance, has not been made. To facilitate this evaluation, we expanded on light WiMAX ns2 add-on to support ntRS, the two-frame structure types, in addition to the relevant operational requirements (e.g. QoS support). We observed that whereas the multi-frame structure allows for higher throughput and voice capacities, the single frame shows some general advantage in terms of delay. A serious need exists, however, for schedulers that exploit the advantages of a dynamic multi-frame structure in order to realize its full potential.

    Original languageEnglish
    Pages (from-to)608-625
    Number of pages18
    JournalConcurrency and Computation: Practice and Experience
    Issue number5
    Publication statusPublished - Apr 10 2013


    • OFDMA
    • frame structure
    • non-transparent relay

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • Software
    • Computer Science Applications
    • Computer Networks and Communications
    • Computational Theory and Mathematics


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