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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 會議論文  >  An Adaptive e with QoS Support for the IEEE 802.11 Wireless LANs Retransmission Scheme

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/14195

    Title: An Adaptive e with QoS Support for the IEEE 802.11 Wireless LANs Retransmission Scheme
    Authors: W. T. Chen
    Bo-Bin Jian
    Shou-Chih Lo
    教師: 陳文村
    Date: 2002
    Publisher: Institute of Electrical and Electronics Engineers Inc
    Keywords: IEEE standards
    carrier sense multiple access
    mobile computing
    mobile radio
    packet radio
    quality of service
    real-time systems
    telecommunication traffic
    wireless LAN
    Abstract: The medium access control (MAC) protocol of the IEEE 802.11 standard is based on carrier sense multiple access with collision avoidance (CSMA/CA). The basic retransmission mechanism, binary exponential backoff, may cause large packet delay and jitter values that are not suitable for real-time traffic. In this paper, we first investigate some MAC enhancement mechanisms discussed in the IEEE 802.11 task group E, which was formed for enhancing the current 802.11 MAC protocol to support for applications with quality of service (QoS) requirements. Then, we propose a jamming-based retransmission mechanism that is compatible with the 802.11 standard and could reduce the packet delay of real-time traffic. Besides, this mechanism performs stably when the traffic load is heavy. The optimal setting of our proposed mechanism is discussed analytically. We perform simulated experiments by comparing our proposed retransmission mechanism with the other two mechanisms discussed in the 802.11 task group E. We show that the jamming-based retransmission mechanism can reduce the packet delay and the packet dropping rate.
    Relation Link: http://ieeexplore.ieee.org/Xplore/dynhome.jsp
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/14195
    Appears in Collections:[資訊工程學系] 會議論文
    [通訊工程研究所] 會議論文
    [電腦與通訊科技研發中心] 會議論文

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