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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Abstract

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:	https://doi.org/10.1007/978-3-642-34976-8_16
Depositing User:	Dr. David Malone
Date Deposited:	10 Apr 2015 14:55
Publisher:	Springer Verlag
Refereed:	Yes
Funders:	Science Foundation Ireland (SFI)
URI:	http://link.springer.com
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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