Achieving MAC layer fairness in wireless packet networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Distributed fair scheduling in a wireless LAN
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Characterizing user behavior and network performance in a public wireless LAN
SIGMETRICS '02 Proceedings of the 2002 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Analysis of a campus-wide wireless network
Proceedings of the 8th annual international conference on Mobile computing and networking
Adaptive Congestion Control in Infrastructure Wireless LANs with Bounded Medium Access Delay
MobiWac '02 Proceedings of the International Workshop on Mobility and Wireless Access
Characterizing flows in large wireless data networks
Proceedings of the 10th annual international conference on Mobile computing and networking
The changing usage of a mature campus-wide wireless network
Proceedings of the 10th annual international conference on Mobile computing and networking
Experimental evaluation of the TCP simultaneous-send problem in 802.11 wireless local area networks
Proceedings of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis
Applications and challenges of the 802.11e EDCA mechanism: an experimental study
IEEE Network: The Magazine of Global Internetworking
Qos enhancement for multimedia traffics with dynamic txoplimit in ieee 802.11e
Proceedings of the 3rd ACM workshop on QoS and security for wireless and mobile networks
Reconfiguring queues for QOS improvement in 802.11 networks
WOC '08 Proceedings of the Eighth IASTED International Conference on Wireless and Optical Communications
Buffer sizing for 802.11-based networks
IEEE/ACM Transactions on Networking (TON)
A cross-layer TCP enhancement in QoS-aware mobile ad hoc networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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There has been an explosive growth in the use of wireless LANs (WLANs) to support network applications ranging from web-browsing and file-sharing to voice calls. It is difficult to optimally configure WLAN components, such as access points (APs), to meet the quality-of-service requirements of the different applications, as well as ensuring flow-level fairness. Recent work has shown that the widely-deployed IEEE 802.11 MAC Distributed Coordination Function (DCF) is biased against downstream flows. The new IEEE 802.11e standard introduces QoS mechanisms, such as Enhanced Distributed Channel Access (EDCA), that allow this unfairness to be addressed. So far, only limited work has been done to evaluate the impact of these MAC protocols on TCP-based applications. In this paper, through ns-2 simulations, we evaluate the impact of EDCA on TCP application traffic consisting of both long and short-lived TCP flows. We find that the performance of TCP applications is very dependent upon the settings of the EDCA parameters and buffer lengths at the AP. We also show that the performance of the admission control strategy employed depends on the buffer lengths at the AP and the traffic intensity.