Date of Award

5-2008

Document Type

Thesis

Degree Name

Master of Science (MS)

Legacy Department

Computer Science

Advisor

Martin, James

Committee Member

Westall , James M

Committee Member

Madison , Alan W

Abstract

A common form of local wireless communication is defined by the IEEE as 802.11. Unfortunately, 802.11 has limitations regarding high priority traffic such as voice and data which are sensitive to jitter, delay, and loss. The IEEE 802.11e standard provides enhancements that allow traffic with specific needs to be differentiated from normal traffic. While these enhancements have been shown to effectively improve latency and throughput for high priority traffic, they do not offer precise and consistent control of performance levels for all priorities. In this work, a method to dynamically optimize 802.11e contention parameters is presented that provides more granular control over the network's quality of service for the various data types. A distributed adaptive algorithm that extends 802.11e's Enhanced Distributed Channel Access is presented and is shown to provide more granular and consistent performance than that provided by the static algorithm used in standard 802.11e.

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