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Adaptive EY-NPMA: A Medium Access Protocol for Wireless LANs  

Dimitriadis, Gerasimos
Pavlidou, Foteini-Niovi
Publication Information
Journal of Communications and Networks / v.6, no.4, 2004 , pp. 307-316 More about this Journal
Abstract
Wireless local area networks have known an increasing popularity during the past few years. However, as new user applications diverge from the traditional data-centric model, the introduction of efficient, QoS aware medium access methods becomes of utmost importance. EY-NPMA is a medium access protocol belonging to the contention paradigm that provides support for service differentiation and low collision rates. In this paper, we address a shortcoming of EY-NPMA as indicated by previous studies, namely the insensitivity of the protocol to different working conditions. In this work, we study and evaluate a mechanism that allows a network employing EY-NPMA to adapt its operating parameters according to the offered load. Simulation studies further document and confirm the positive characteristics of the proposed mechanism.
Keywords
EY-NPMA; medium access; wireless LANs;
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