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QoS control and resource management in 802.11e WLANs to support real time and multimedia services remains an open problem. All the solutions that only aim to enhance the performance of the enhanced distributed channel access (EDCA) mechanism cannot resolve the performance degradation problem once the channel becomes saturated. Hence, an efficient admission control scheme in EDCA is a key to guarantee...
Extensive research addressing IEEE 802.11e enhanced distributed channel access (EDCA) performance analysis, by means of analytical models, exist in the literature. It started mainly with the famous Bianchi's model and still continues today as several aspects have not been covered yet. Unfortunately, the currently proposed models, even though numerous, do not reach the required accuracy due to the...
Extensive research addressing IEEE 802.11 distributed coordination function (DCF) and 802.11e enhanced distributed channel access (EDCA) performance analysis, by means of analytical models, exists in the literature. It started mainly with the famous Bianchi's model and still continues today as several aspects have not been yet covered. Indeed, the ultimate goal is to obtain the model that provides...
In this paper, we propose a complete analytical model for the 802.11e enhanced distributed channel access (EDCA) under different traffic conditions; it outperforms almost all existing models. Based on the proposed model, the achievable throughput and access delay of each EDCA access category are given. Simulation is performed to demonstrate that our model provides a high degree of accuracy.
Several analytical models have been developed for both 802.11 distributed coordinated function (DCF) and 802.11e enhanced distributed channel access (EDCA). However, none of these models considers the 802.11e Contention Free Burst (CFB) mode which allows a given station to transmit more than one frame for each access to the channel. In spite of its influence on the global performance and its role...
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