Abstract
It has been reported that there occurs unfairness between downlink and uplink in 802.11 WLAN. This is mainly caused by CSMA/CA employed in DCF. The unfairness specifically has an adverse impact on bi-directional voice calls. Downlink voice connections become a primary factor to limit voice capacity. In this paper, we propose a novel medium access protocol, so called DCFmm, in order to improve QoS of downlink voice traffic as well as fairness between bi-directional voice connections. DCFmm is designed to enhance 802.11 DCF, and is fully compatible to the legacy DCF. In addition, it only requires protocol modifications of the AP. Thus, it can be easily implemented into existing 802. 11 WLANs. DCFmm is compared with two conventional techniques through computer simulations. Extensive simulation results show that the proposed DCFmm scheme can improve fairness between downlink and uplink, and consequently, support larger number of voice calls than DCF.
| Original language | English |
|---|---|
| Title of host publication | 2006 3rd IEEE Consumer Communications and Networking Conference, CCNC 2006 |
| Pages | 45-49 |
| Number of pages | 5 |
| Volume | 1 |
| DOIs | |
| Publication status | Published - 2006 Oct 3 |
| Externally published | Yes |
| Event | 2006 3rd IEEE Consumer Communications and Networking Conference, CCNC 2006 - Las Vegas, NV, United States Duration: 2006 Jan 8 → 2006 Jan 10 |
Other
| Other | 2006 3rd IEEE Consumer Communications and Networking Conference, CCNC 2006 |
|---|---|
| Country | United States |
| City | Las Vegas, NV |
| Period | 06/1/8 → 06/1/10 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Enhancing MAC protocol for voice over IEEE 802.11 WLANs. / Kim, Jong-Ok; Tode, Hideki; Murakami, Koso.
2006 3rd IEEE Consumer Communications and Networking Conference, CCNC 2006. Vol. 1 2006. p. 45-49 1592985.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Enhancing MAC protocol for voice over IEEE 802.11 WLANs
AU - Kim, Jong-Ok
AU - Tode, Hideki
AU - Murakami, Koso
PY - 2006/10/3
Y1 - 2006/10/3
N2 - It has been reported that there occurs unfairness between downlink and uplink in 802.11 WLAN. This is mainly caused by CSMA/CA employed in DCF. The unfairness specifically has an adverse impact on bi-directional voice calls. Downlink voice connections become a primary factor to limit voice capacity. In this paper, we propose a novel medium access protocol, so called DCFmm, in order to improve QoS of downlink voice traffic as well as fairness between bi-directional voice connections. DCFmm is designed to enhance 802.11 DCF, and is fully compatible to the legacy DCF. In addition, it only requires protocol modifications of the AP. Thus, it can be easily implemented into existing 802. 11 WLANs. DCFmm is compared with two conventional techniques through computer simulations. Extensive simulation results show that the proposed DCFmm scheme can improve fairness between downlink and uplink, and consequently, support larger number of voice calls than DCF.
AB - It has been reported that there occurs unfairness between downlink and uplink in 802.11 WLAN. This is mainly caused by CSMA/CA employed in DCF. The unfairness specifically has an adverse impact on bi-directional voice calls. Downlink voice connections become a primary factor to limit voice capacity. In this paper, we propose a novel medium access protocol, so called DCFmm, in order to improve QoS of downlink voice traffic as well as fairness between bi-directional voice connections. DCFmm is designed to enhance 802.11 DCF, and is fully compatible to the legacy DCF. In addition, it only requires protocol modifications of the AP. Thus, it can be easily implemented into existing 802. 11 WLANs. DCFmm is compared with two conventional techniques through computer simulations. Extensive simulation results show that the proposed DCFmm scheme can improve fairness between downlink and uplink, and consequently, support larger number of voice calls than DCF.
UR - http://www.scopus.com/inward/record.url?scp=33749065345&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749065345&partnerID=8YFLogxK
U2 - 10.1109/CCNC.2006.1592985
DO - 10.1109/CCNC.2006.1592985
M3 - Conference contribution
AN - SCOPUS:33749065345
SN - 1424400856
SN - 9781424400850
VL - 1
SP - 45
EP - 49
BT - 2006 3rd IEEE Consumer Communications and Networking Conference, CCNC 2006
ER -