TY - GEN
T1 - Short-term nonuniform access in IEEE 802.11-compliant WLANs
T2 - ACM MSWiM 2006 - 9th ACM Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems
AU - Hu, Chunyu
AU - Kim, Hwangnam
AU - Hou, Jennifer C.
PY - 2006
Y1 - 2006
N2 - Along with the success of IEEE 802.11-compliant WLANs, the Distributed Coordinated Function (DCF) specified as the contention-based medium access mechanism in IEEE 802,11 has been widely used to support applications in new regimes. A thorough understanding of the characteristics of IEEE 802.11 DCF is therefore a research focus. DCF assumes the binary exponential backoff algorithm (BEBA), Several existing models that characterize BEBA as a p-persistent scheme have ignored several subtle protocol details. This has practically constrained the models from being applied in a broader range of configurations, e.g., small contention window, and from being further extended, e.g. 802.11e EDCA. In this paper, we develop an analytical model that captures the subtlety, and faithfully describes the channel activities as governed by DCF. Based on the devised model, we perform a rigorous analysis on the saturation throughput performance in a single-hop WLAN. We also identify, by clearly defining and thus being able to differentiate the two terms, attempt probability and transmission probability, an erroneous extension made to Bianchi's model [3]. All the findings are corroborated by ns-2 simulation.
AB - Along with the success of IEEE 802.11-compliant WLANs, the Distributed Coordinated Function (DCF) specified as the contention-based medium access mechanism in IEEE 802,11 has been widely used to support applications in new regimes. A thorough understanding of the characteristics of IEEE 802.11 DCF is therefore a research focus. DCF assumes the binary exponential backoff algorithm (BEBA), Several existing models that characterize BEBA as a p-persistent scheme have ignored several subtle protocol details. This has practically constrained the models from being applied in a broader range of configurations, e.g., small contention window, and from being further extended, e.g. 802.11e EDCA. In this paper, we develop an analytical model that captures the subtlety, and faithfully describes the channel activities as governed by DCF. Based on the devised model, we perform a rigorous analysis on the saturation throughput performance in a single-hop WLAN. We also identify, by clearly defining and thus being able to differentiate the two terms, attempt probability and transmission probability, an erroneous extension made to Bianchi's model [3]. All the findings are corroborated by ns-2 simulation.
KW - Backoff algorithm
KW - IEEE 802.11 MAC
KW - Model
KW - p-Persistent
UR - http://www.scopus.com/inward/record.url?scp=33750925145&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750925145&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33750925145
SN - 1595934774
SN - 9781595934772
T3 - ACM MSWiM 2006 - Proceedings of the 9th ACM Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems
SP - 99
EP - 107
BT - ACM MSWiM 2006 - Proceedings of the Ninth ACM Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems
Y2 - 2 October 2006 through 6 October 2006
ER -