Research Article
Adaptive Buffer Sizing for TCP Flows in 802.11e WLANs
@INPROCEEDINGS{10.1109/CHINACOM.2008.4684957, author={Tianji Li and Douglas Leith}, title={Adaptive Buffer Sizing for TCP Flows in 802.11e WLANs}, proceedings={ChinaCom2008-Wireless Communications and Networking Symposium}, publisher={IEEE}, proceedings_a={CHINACOM2008-WCN}, year={2008}, month={11}, keywords={802.11 Wireless LANs (WLANs) Medium Access Control (MAC) Buffer sizing/provision}, doi={10.1109/CHINACOM.2008.4684957} }- Tianji Li
Douglas Leith
Year: 2008
Adaptive Buffer Sizing for TCP Flows in 802.11e WLANs
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4684957
Abstract
We consider the provision of Access Point buffers in WLANs. We first demonstrate that the default use of static buffers in WLANs leads to either undesirable channel under-utilisation or unnecessary high delays, which motivates the use of dynamic buffer sizing. Although adaptive algorithms have been proposed for wired Internet, a number of fundamental new issues arise in WLANs which necessitates new algorithms to be designed. These new issues include the fact that channel bandwidth is time-varying, the mean service rate is dependent on the level of channel contention, and packet inter-service times vary stochastically due to the random nature of CSMA/CA operation. We propose an adaptive sizing algorithms which is demonstrated to be able to maintain high throughput efficiency whilst achieving low delay.