MACAW: a media access protocol for wireless LAN's
SIGCOMM '94 Proceedings of the conference on Communications architectures, protocols and applications
HARMONICA: Enhanced QoS Support with Admission Control for IEEE 802.11 Contention-based Access
RTAS '04 Proceedings of the 10th IEEE Real-Time and Embedded Technology and Applications Symposium
Performance evaluation of an adaptive backoff scheme for WLAN: Research Articles
Wireless Communications & Mobile Computing - Special Issue: Emerging WLAN Apllications and Technologies
IEEE 802.11n: enhancements for higher throughput in wireless LANs
IEEE Wireless Communications
Evaluation of distributed admission control for the IEEE 802.11e EDCA
IEEE Communications Magazine
Supporting service differentiation in wireless packet networks using distributed control
IEEE Journal on Selected Areas in Communications
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To improve the performance of IEEE 802.11e, many methods based on admission control mechanisms and adaptive contention window adjustment algorithms are proposed. In this paper, however, we do not use such typical approach to achieve this goal. Instead, we propose a new EIFS strategy for improving the performance in IEEE 802.11e. In IEEE 802.11e specification, the EIFS time delay is activated after a node initiates an unsuccessful transmission. The new EIFS strategy has the same activation mechanism as the specification. The major difference between the standard EIFS and the new EIFS strategy is when to deactivate such time delay. In specification, a node deactivates the EIFS time delay whenever any nodes in system have a successful transmission. However, in our proposed EIFS strategy, a node deactivates the EIFS time delay only when itself has a successful transmission. Performance results via simulations have shown that this new strategy is able to boost the system performance significantly over a wide range of scenarios. In addition, we analyze this strategy in details and reveal the tradeoff and the cost to implement this new strategy.