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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...
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.
In this paper we present an algorithm, based on power management of access points (AP), to reduce congestion in wireless local area networks (WLANs). The algorithm finds the most congested access point (MCAP) and adjusts its transmitted power in discrete steps and determines the optimal userspsila assignment such that an optimal load distribution is achieved. Results show that the algorithm is capable...
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