Knowledge-based exponential backoff scheme in IEEE 802.15.4 MAC

Sinam Woo, Woojin Park, Sae Young Ahn, Sunshin An, Dongho Kim

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

    16 Citations (Scopus)

    Abstract

    In wireless personal area network, a channel is shared by a number of nodes. Therefore packet collision may take place and it degrades the throughput performance. To improve the throughput of slotted CSMA/CA in IEEE 802.15.4, we propose knowledge-based exponential backoff (KEB) scheme for enhancing channel utilization solely based on the locally available channel state information. In addition, we propose an analytical model of slotted channel access mechanism with finite retry and derive the theoretical throughput limit. In simulation experiments, we show that the existing MAC scheme, binary exponential backoff (BEB) scheme, operates very far from the theoretical limits due to increased time for negotiating channel access. Also performance results indicate that KEB shows significant improvement in throughput performance over BEB with the knowledge of the network status.

    Original languageEnglish
    Title of host publicationInformation Networking
    Subtitle of host publicationTowards Ubiquitous Networking and Services - International Conference, ICOIN 2007, Revised Selected Papers
    PublisherSpringer Verlag
    Pages435-444
    Number of pages10
    ISBN (Print)354089523X, 9783540895237
    DOIs
    Publication statusPublished - 2008
    Event21st International Conference on Information Networking, ICOIN 2007 - Estoril, Portugal
    Duration: 2007 Jan 232007 Jan 25

    Publication series

    NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
    Volume5200 LNCS
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349

    Other

    Other21st International Conference on Information Networking, ICOIN 2007
    Country/TerritoryPortugal
    CityEstoril
    Period07/1/2307/1/25

    Bibliographical note

    Funding Information:
    This work was supported by the National Natural Science Foundation (50878219), National Basic Research Program of China (2010CB334710), Natural Science Foundation Project of CQ CSTC2008BA6038, CSTC2009AB6148, CSTC2009AB6149 and CSTC2011BA6026, and the Ministry of Education for New Century Excellent Talent Support Program.

    Keywords

    • Backoff
    • IEEE 802.15.4
    • MAC
    • Markov model
    • Throughput

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • General Computer Science

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