TY - GEN
T1 - Enhancing downlink multimedia QoS in WiFi hotspot networks
AU - Kim, Jong Ok
AU - Tanigawa, Yosuke
AU - Tode, Hideki
PY - 2010
Y1 - 2010
N2 - In IEEE 802.11 DCF, performance unfairness inevitably occurs between downlink (AP-to-station) and uplink (station-to-AP) directions. The asymmetry of the DCF operation degrades downlink traffic severely. Therefore, it is important to enhance downlink QoS by alleviating link congestion. In this paper, we propose a novel medium access control scheme, B-DCF (Burst DCF), to enhance the legacy DCF. It is designed to provide a level of QoS differentiation with downlink traffic, and can improve downlink multimedia QoS in a cell. QoS differentiation is realized using burst transmission control. B-DCF is fully backward compatible to the legacy DCF, and can friendly operate with normal DCF stations. B-DCF is evaluated and compared to DCF and EDCA schemes. For heavy BE (best effort) loads, the proposed B-DCF scheme can support larger number of conversational voice calls while achieving larger BE throughput.
AB - In IEEE 802.11 DCF, performance unfairness inevitably occurs between downlink (AP-to-station) and uplink (station-to-AP) directions. The asymmetry of the DCF operation degrades downlink traffic severely. Therefore, it is important to enhance downlink QoS by alleviating link congestion. In this paper, we propose a novel medium access control scheme, B-DCF (Burst DCF), to enhance the legacy DCF. It is designed to provide a level of QoS differentiation with downlink traffic, and can improve downlink multimedia QoS in a cell. QoS differentiation is realized using burst transmission control. B-DCF is fully backward compatible to the legacy DCF, and can friendly operate with normal DCF stations. B-DCF is evaluated and compared to DCF and EDCA schemes. For heavy BE (best effort) loads, the proposed B-DCF scheme can support larger number of conversational voice calls while achieving larger BE throughput.
UR - http://www.scopus.com/inward/record.url?scp=77956568906&partnerID=8YFLogxK
U2 - 10.1109/INDIN.2010.5549595
DO - 10.1109/INDIN.2010.5549595
M3 - Conference contribution
AN - SCOPUS:77956568906
SN - 9781424473007
T3 - IEEE International Conference on Industrial Informatics (INDIN)
SP - 1049
EP - 1053
BT - Proceedings - INDIN 2010
T2 - 8th IEEE International Conference on Industrial Informatics, INDIN 2010
Y2 - 13 July 2010 through 16 July 2010
ER -