Self-similarity in World Wide Web traffic: evidence and possible causes
IEEE/ACM Transactions on Networking (TON)
Generating representative Web workloads for network and server performance evaluation
SIGMETRICS '98/PERFORMANCE '98 Proceedings of the 1998 ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
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
Measurement-based characterization of 802.11 in a hotspot setting
Proceedings of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis
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
Balancing uplink and downlink delay of VoIP traffic in WLANs using Adaptive Priority Control (APC)
QShine '06 Proceedings of the 3rd international conference on Quality of service in heterogeneous wired/wireless networks
Impact of background traffic on performance of high-speed TCP variant protocols
Computer Networks: The International Journal of Computer and Telecommunications Networking
Time-based fairness improves performance in multi-rate WLANs
ATEC '04 Proceedings of the annual conference on USENIX Annual Technical Conference
Software—Practice & Experience
Achieving Fairness in Wireless LANs by Enhanced IEEE 802.11 DCF
WIMOB '06 Proceedings of the 2006 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications
Designing high performance enterprise Wi-Fi networks
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
FatVAP: aggregating AP backhaul capacity to maximize throughput
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
On dominant characteristics of residential broadband internet traffic
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
On the fidelity of 802.11 packet traces
PAM'08 Proceedings of the 9th international conference on Passive and active network measurement
Unwanted Link Layer Traffic in Large IEEE 802.11 Wireless Networks
IEEE Transactions on Mobile Computing
FLUID: improving throughputs in enterprise wireless lans through flexible channelization
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Enhance & explore: an adaptive algorithm to maximize the utility of wireless networks
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Concurrent Wi-Fi for mobile users: analysis and measurements
Proceedings of the Seventh COnference on emerging Networking EXperiments and Technologies
Just-in-time provisioning for cyber foraging
Proceeding of the 11th annual international conference on Mobile systems, applications, and services
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WiFi-based wireless LANs (WLANs) are widely used for Internet access. They were designed such that an Access Points (AP) serves few associated clients with symmetric uplink/downlink traffic patterns. Usage of WiFi hotspots in locations such as airports and large conventions frequently experience poor performance in terms of downlink goodput and responsiveness. We study the various factors responsible for this performance degradation. We analyse and emulate a large conference network environment on our testbed with 45 nodes. We find that presence of asymmetry between the uplink/downlink traffic results in backlogged packets at WiFi Access Point's (AP's) transmission queue and subsequent packet losses. This traffic asymmetry results in maximum performance loss for such an environment along with degradation due to rate diversity, fairness and TCP behaviour. We propose our solution WiFox, which (1) adaptively prioritizes AP's channel access over competing STAs avoiding traffic asymmetry (2) provides a fairness framework alleviating the problem of performance loss due to rate-diversity/fairness and (3) avoids degradation due to TCP behaviour. We demonstrate that WiFox not only improves downlink goodput by 400-700 % but also reduces request's average response time by 30-40 %.