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Throughput and delay analysis for the IEEE 802.11e enhanced distributed channel access

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2 Author(s)
Zhifeng Tao ; Dept. of Electr. & Comput. Eng., Polytech. Univ., Brooklyn, NY, USA ; Panwar, S.

In this letter, we propose a three-dimensional Markov chain model for the 802.11e enhanced distributed channel access (EDCA) mode. This model can be used to compute the maximum sustainable throughput and service delay distribution for each priority class when under saturation load. The new framework models the performance impact of major quality-of-service (QoS)-specific features (e.g., CWMin, CWMax, AIFS, internal collision resolution) of the 802.11e EDCA mode, and hence can provide an analytical approach to pick the parameter values associated with EDCA to meet the QoS requirements of each priority.

Published in:
Communications, IEEE Transactions on  (Volume:54 ,  Issue: 4 )

Date of Publication: April 2006

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