An improved medium access control scheme for multimedia wireless local area networks
Proceedings of the 3rd international conference on Mobile multimedia communications
Performance Evaluation of IEEE 802.11e EDCA with DCF Improvement Algorithms
ICCSA '08 Proceeding sof the international conference on Computational Science and Its Applications, Part I
Evaluation of real-time communication performance in QoS-enabled infrastructure WLANs
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
Resolving Intra-Class Unfairness in 802.11 EDCA
Wireless Personal Communications: An International Journal
Performance analysis and comparison of burst transmission schemes in unsaturated 802.11e WLANs
Wireless Communications & Mobile Computing
Comprehensive QoS analysis of enhanced distributed channel access in wireless local area networks
Information Sciences: an International Journal
Voice Traffic Service Guarantee in Wireless Mesh Networks Based on IEEE 802.11e
International Journal of Business Data Communications and Networking
A Simple Analytical Model for Expected Frame Waiting Time Evaluation in IEEE 802.11e HCCA Mode
Wireless Personal Communications: An International Journal
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In this paper, we analyze the saturation performance of IEEE 802.11e enhanced distributed channel access (EDCA), which provides contention-based differentiated channel access for frames of different priorities in wireless LANs. With EDCA, quality of service (QoS) support is provided with up to four access categories (ACs) in each station. Each AC behaves as an independent backoff entity. The priority among ACs is then determined by AC-specific parameters, called the EDCA parameter set. The behavior of the backoff entity of each AC is modeled as a two-state Markov chain, which is extended from Bianchi's model to capture the features of EDCA. The differences of our model from existing work for 802.11e EDCA include: (i) virtual collisions among different ACs in an EDCA station are modeled, thus more accurately capturing the behavior of EDCA; (ii) the influence of using different arbitrary inter-frame spaces (AIFS) for different ACs on saturation performance are considered; (iii) delay and delay jitter are derived, in addition to saturation throughput. The analytical model is validated via ns-2 simulations. The results show that our analytical model can accurately describe the behavior of IEEE 802.11e EDCA