Cross layer scheduling algorithm for IEEE 802.16 broadband wireless networks

Najah Abu Ali, Mohammad Hayajneh, Hossam Hassanein

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)


    In order to support different types of user applications, the IEEE 802.16 standard defines different service classes together with their associated Quality of Service (QoS) parameters. However, the standard lacks a MAC scheduling architecture that guarantees these defined QoS requirements. The importance of efficient scheduling is crucial to QoS provisioning for multimedia flows. In this paper we propose an opportunistic and optimized downlink scheduler that pledges fairness among admitted connections. Our approach involves separating the scheduling problem into two sub-problems. In the first problem, the proposed scheduler calculates the number of time-slots in each time frame corresponding to the service classes with the objective minimizing the blocking probability of each class. In the second problem, time-slots for each class connection are allocated using an integrated cross-layer priority functions that guarantee proportional fairness. The simulation results reveal that the proposed scheduler realizes our objectives, and provides efficient QoS scheduling without starving the connections of the best effort class.

    Original languageEnglish
    Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
    Number of pages5
    Publication statusPublished - 2008
    EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
    Duration: May 19 2008May 23 2008

    Publication series

    NameIEEE International Conference on Communications
    ISSN (Print)0536-1486


    OtherIEEE International Conference on Communications, ICC 2008

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering


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