Extension and Comparison of QoS-Enabled Wi-Fi Models in the Presence of Errors

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Executive Summary

This paper compares and enhances the three prevailing approaches of IEEE 802.11e Performance analysis. Specifically, the first model utilizes a Markov Chain to describe the state of the Backoff Counter, the second is based on a general probabilistic explanation of the standard and the third forms a queuing network. The authors have injected, in the proposed models, new ideas to cover the latest update of the QoS-enabled 802.11e standard, and compared all the models showing results regarding the accuracy of each approach. Throughput performance is given for various parameters of the medium while including Gaussian error-prone channel in 802.11b/e.

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