Service differentiation for the bandwidth request scheme in fixed IEEE 802.16 networks

Kai Chen, Yi Zhou, Jianhua He, Zuoyin Tang

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

    4 Citations (Scopus)

    Abstract

    IEEE 802.16 standards have been developed as one of the technical solutions for broadband wireless access systems. It has high data rate, large network coverage, flexible QoS schemes and cheap network deployment. Various flexible mechanisms related to QoS provisioning have been specified for uplink traffic at the medium access control (MAC) layer in the standards. Among the mechanisms, contention based bandwidth request scheme can be used to indicate bandwidth demands to the base station for the non-real-time polling and besteffort services. These two services are used for most application with unknown traffic characteristics. Due to the diverse QoS requirements of those applications, service differentiation (SD) is anticipated over the contention based bandwidth request scheme. In this paper we investigate the SD with the bandwidth request scheme by means of assigning different channel access parameters and bandwidth allocation priorities. The effectiveness of the differentiation schemes are evaluated by simulations. It is observed that the initial backoff window can be efficient in SD, and if combined with the bandwidth allocation priority, the SD performances will be better.

    Original languageEnglish
    Title of host publication2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC
    Pages718-722
    Number of pages5
    DOIs
    Publication statusPublished - 3 Jun 2008
    Event2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC - Shanghai, China
    Duration: 26 May 200828 May 2008

    Publication series

    Name2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC

    Conference

    Conference2008 4th IEEE International Conference on Circuits and Systems for Communications, ICCSC
    CountryChina
    CityShanghai
    Period26/05/0828/05/08

    Keywords

    • IEEE 802.16
    • MAC
    • Random channel access
    • Service differentiation
    • WiMAX

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