Researchers Find Way to Boost WiFi Performance 400-700 Percent

Is this just bringing switching tech to a shared medium? Nonetheless interesting:


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 behavior. 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 behavior. We demonstrate that WiFox not only improves downlink goodput by 400-700 % but also reduces request’s average response time by 30-40 %.

http://news.ncsu.edu/releases/wms-gupta-wifi/