Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit
IEEE/ACM Transactions on Networking (TON)
An Analysis for Differentiated Services in IEEE 802.11 and IEEE 802.11e Wireless LANs
ICDCS '04 Proceedings of the 24th International Conference on Distributed Computing Systems (ICDCS'04)
Temporal Fairness Provisioning in Multi-Rate Contention-Based 802.11e WLANs
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Performance analysis and evaluation of IEEE 802.11e EDCF: Research Articles
Wireless Communications & Mobile Computing - Performance Evaluation of Wireless Networks
Non-saturation and saturation analysis of IEEE 802.11e EDCA with starvation prediction
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Achieving Weighted Fairness between Uplink and Downlink in IEEE 802.11 DCF-Based WLANs
Proceedings of the Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks
IEEE Transactions on Wireless Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Performance analysis of IEEE 802.11e contention-based channel access
IEEE Journal on Selected Areas in Communications
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The de facto quality-of-service provisioning mechanism for wireless LANs is the Enhanced Distributed Channel Access (EDCA), which provides enhanced service differentiation based on four different prioritized Access Categories (ACs). In this paper, we show that the multiple category mechanism of EDCA causes a new type of unfairness problem among the ACs of same priority class when the numbers of active ACs in competing nodes are different. We present a simple analytical model to capture the impact of virtual collision, external collision, and Arbitration Interframe Space on the degree of this intra-class unfairness. Based on its analytical insight, we present a simple remedy scheme for resolving the unfairness and evaluate its efficiency using ns-2 simulations.