Performance comparison of OFDM bandwidth request schemes in fixed IEEE 802.16 networks

Jianhua He, Zuoyin Tang, Hsiao Hwa Chen

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)


    IEEE 802.16 standard specifies two contention based bandwidth request schemes working with OFDM physical layer specification in point-to-multipoint (PMP) architecture, the mandatory one used in region-full and the optional one used in region-focused. This letter presents a unified analytical model to study the bandwidth efficiency and channel access delay performance of the two schemes. The impacts of access parameters, available bandwidth and subchannelization have been taken into account. The model is validated by simulations. The mandatory scheme is observed to perform closely to the optional one when subchannelization is active for both schemes.

    Original languageEnglish
    Pages (from-to)283-285
    Number of pages3
    JournalIEEE Communications Letters
    Issue number4
    Publication statusPublished - 15 Apr 2008


    • IEEE 802.16
    • MAC
    • Modeling
    • WiMAX

    ASJC Scopus subject areas

    • Modelling and Simulation
    • Computer Science Applications
    • Electrical and Electronic Engineering


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