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    Addressing Slot Drift in Decentralized Collision Free Access Schemes for WLANs

    Gong, Wunang and Malone, David (2012) Addressing Slot Drift in Decentralized Collision Free Access Schemes for WLANs. In: Multiple Access Communications : 5th International Workshop, MACOM 2012, Maynooth, Ireland, November 19-20, 2012. Proceedings. Lecture Notes in Computer Science (7642). Springer Verlag, pp. 146-157. ISBN 978-3-642-34975-1

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    Decentralized Collision-Free Access (DCFA) schemes are an appealing family of MAC mechanisms in WLANs due to their good system throughput and decentralized nature. In this paper we consider the problem of slot drift for these schemes and provide evidence that DCFA can be vulnerable to such problems. We propose two schemes to enhance DCFA in this regard: Global View Synchronization (GVS) and Smart Collision Free (SCF). GVS aims to provide slot indexing, which helps stations correct their counters after drift. SCF accelerates the convergence process to the collision-free state for WLANs, and so reduces the impact of drift. Simulation results show that both GVS and SCF improve the system performance in the presence of slot drift.

    Item Type: Book Section
    Additional Information: This is the postprint version of the published paper, which is available at DOI: 10.1007/978-3-642-34976-8_16 . The authors were supported by SFI grant 08/SRC/I1403 (FAME) and 07/SK/I1216a.
    Keywords: WLAN; Decentralization; collision-free MACs; slot drift;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 6014
    Identification Number:
    Depositing User: Dr. David Malone
    Date Deposited: 10 Apr 2015 14:55
    Publisher: Springer Verlag
    Refereed: Yes
    Funders: Science Foundation Ireland (SFI)

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