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A MAC Scheme with QoS Guarantee for MANETs

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Author(s): Yanbin YANG | Yulin WEI

Journal: International Journal of Communications, Network and System Sciences
ISSN 1913-3715

Volume: 02;
Issue: 08;
Start page: 759;
Date: 2009;
Original page

Keywords: Mobile Ad Hoc Network | Medium Access Control | Distributed Coordination Function | En-hanced Distributed Channel Access | Contention Window

ABSTRACT
IEEE 802.11 distributed coordination function (DCF) can alleviate the collision and hidden station problem, but it doesn’t differentiate traffic categories (TC). Therefore, it can’t provide sufficient QoS support for different traffic categories. Recently, a new contention-based enhanced distributed channel access (EDCA) scheme was proposed which provides a probabilistic QoS support. In this paper, an adaptive EDCA scheme with QoS guarantee for mobile ad hoc networks (MANETs) is proposed. In this scheme, the EDCA scheme and the token bucket algorithm (TBA) are combined to adjust the contention window (CW). Our scheme provides the traffic differentiation.

Tango Jona
Tangokurs Rapperswil-Jona

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