Broadband Networks, International Conference on (2004)
San Jose, California, USA
Oct. 25, 2004 to Oct. 29, 2004
Joseph Dunn , University of Colorado, Boulder
Michael Neufeld , University of Colorado, Boulder
Anmol Sheth , University of Colorado, Boulder
Dirk Grunwald , University of Colorado, Boulder
John Bennett , University of Colorado, Boulder
Many companies, organizations and communities are providing wireless hotspots that provide networking access using 802.11b wireless networks. Since wireless networks are more sensitive to variations in bandwidth and environmental interference than wired networks, most networks support a number of transmission rates that have different error and bandwidth properties. Access points can communicate with multiple clients running at different rates, but this leads to unfair bandwidth allocation. If an access point communicates with a mix of clients using both 1mb/s and 11mb/s transmission rates, the faster clients are effectively throttled to 1mb/s as well. This happens because the 802.11 MAC protocol approximate "station fairness", with each station given an equal chance to access the media. We provide a solution to provide "rate proportional fairness", where the 11mb/s stations receive more bandwidth than the 1mb/s stations. Unlike previous solutions to this problem, our mechanism is easy to implement, works with common operating systems and requires no change to the MAC protocol or the stations.
A. Sheth, M. Neufeld, D. Grunwald, J. Bennett and J. Dunn, "A Practical Cross-Layer Mechanism For Fairness in 802.11 Networks," Broadband Networks, International Conference on(BROADNETS), San Jose, California, USA, 2004, pp. 355-364.