A Dynamic Priority MAC Protocol for Time-Bounded Services in Wireless Networks

Authors:
Orestis Tsigkas;Fotini-Niovi Pavlidou
Affiliations:
Department of Electrical and Computer Engineering, Aristotle, University of Thessaloniki, Thessaloniki, Greece 54124;Department of Electrical and Computer Engineering, Aristotle, University of Thessaloniki, Thessaloniki, Greece 54124
Venue:
Wireless Personal Communications: An International Journal
Year:
2006

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Abstract

Wireless Local Area Networks have gained popularity at an unprecedented rate over the last few years. However, as the spectrum of applications they are called to support broadens, their inefficiency in meeting the diverse requirements of a wider range of applications becomes evident. Most existing access mechanisms cannot provide Quality-of-Service (QoS) assurances. Even those that are QoS aware can only provide relative service differentiation. In this work, we propose a dynamic priority medium access scheme to provide time-bounded services. By approximating an ideal Earliest Deadline First (EDF) scheduler, the proposed scheme can offer delay and delay jitter assurances while achieving high medium utilization. Analytical studies and simulation experiments document and confirm the positive characteristics of the proposed mechanism.