Abstract
According to the latest version of the IEEE 802.11 standard, the backoff parameters of its collision avoidance mechanism are far from optimal, especially in a heavy load or error-prone WLAN environment. This strategy has a high collision probability and channel utilization is degraded in bursty arrivals or congested scenarios. Besides, the standard backoff mechanism may treat noise corruption as packet collisions. In this paper, we identify the relationship between backoff parameters, contention level, and channel BER in order to propose a simple, but yet well-performing distributed algorithm that allows a station to dynamically adjust its contention window size based on turn-around-time measurement of channel status. In addition to theoretical analysis, simulations are conducted to evaluate its performance. The proposed scheme works very well in providing a substantial performance improvement in heavy loaded and error-prone WLAN environments.
| Original language | English |
|---|---|
| Article number | 4712731 |
| Pages (from-to) | 5129-5135 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 7 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2008 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
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Contention window optimization for ieee 802.11 DCF access control. / Deng, Der Jiunn; Ke, Chih Heng; Chen, Hsiao Hwa; Huang, Yueh Min.
In: IEEE Transactions on Wireless Communications, Vol. 7, No. 12, 4712731, 01.12.2008, p. 5129-5135.Research output: Contribution to journal › Article
TY - JOUR
T1 - Contention window optimization for ieee 802.11 DCF access control
AU - Deng, Der Jiunn
AU - Ke, Chih Heng
AU - Chen, Hsiao Hwa
AU - Huang, Yueh Min
PY - 2008/12/1
Y1 - 2008/12/1
N2 - According to the latest version of the IEEE 802.11 standard, the backoff parameters of its collision avoidance mechanism are far from optimal, especially in a heavy load or error-prone WLAN environment. This strategy has a high collision probability and channel utilization is degraded in bursty arrivals or congested scenarios. Besides, the standard backoff mechanism may treat noise corruption as packet collisions. In this paper, we identify the relationship between backoff parameters, contention level, and channel BER in order to propose a simple, but yet well-performing distributed algorithm that allows a station to dynamically adjust its contention window size based on turn-around-time measurement of channel status. In addition to theoretical analysis, simulations are conducted to evaluate its performance. The proposed scheme works very well in providing a substantial performance improvement in heavy loaded and error-prone WLAN environments.
AB - According to the latest version of the IEEE 802.11 standard, the backoff parameters of its collision avoidance mechanism are far from optimal, especially in a heavy load or error-prone WLAN environment. This strategy has a high collision probability and channel utilization is degraded in bursty arrivals or congested scenarios. Besides, the standard backoff mechanism may treat noise corruption as packet collisions. In this paper, we identify the relationship between backoff parameters, contention level, and channel BER in order to propose a simple, but yet well-performing distributed algorithm that allows a station to dynamically adjust its contention window size based on turn-around-time measurement of channel status. In addition to theoretical analysis, simulations are conducted to evaluate its performance. The proposed scheme works very well in providing a substantial performance improvement in heavy loaded and error-prone WLAN environments.
UR - http://www.scopus.com/inward/record.url?scp=58149129048&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58149129048&partnerID=8YFLogxK
U2 - 10.1109/T-WC.2008.071259
DO - 10.1109/T-WC.2008.071259
M3 - Article
AN - SCOPUS:58149129048
VL - 7
SP - 5129
EP - 5135
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
IS - 12
M1 - 4712731
ER -