A smart exponential-threshold-linear backoff algorithm to enhance the performance of IEEE 802.11 DCF

Chih Heng Ke, Chih Cheng Wei, Tin Yu Wu, Der-Jiunn Deng

研究成果: Conference contribution

6 引文 斯高帕斯(Scopus)

摘要

Based on the standardized IEEE 802.11 Distributed Coordination Function (DCF) protocol, this paper proposes a new backoff algorithm, called Smart Exponential-Threshold-Linear (SETL) Backoff Algorithm to enhance the system performance of contention-based wireless networks. As we know, the smaller contention window (CW) will increase the collision probability, but the larger CW will delay the transmission. Hence, in the SETL scheme, a threshold is set to determine the network load. When the CW is smaller than the threshold, a light network load, the CW size is self-adjusted exponentially. Conversely, if the CW is larger than the threshold, a heavy network load, the CW size is tuned linearly. In addition, the SETL takes a more conservative measure by decrease the CW after "S" times consecutive successful transmission to reduce the collision probability, especially when the competing station is large. By simulation, the numerical results show that the SETL provides a better system throughput and collision rate in both light and heavy network load than the related backoff algorithm schemes, including binary exponential backoff (BEB), exponential increase exponential decrease (EIED) and linear increase linear decrease (LILD). The SETL is very easy to implement, as it dose not require any changes in DCF procedures. Every station will self-adjust CW well with high performance and low collision rate.

原文English
主出版物標題2009 4th International Conference on Communications and Networking in China, CHINACOM 2009
頁面95-99
頁數5
DOIs
出版狀態Published - 2009 十二月 16
事件2009 4th International Conference on Communications and Networking in China, CHINACOM 2009 - Xian, China
持續時間: 2009 八月 262009 八月 28

出版系列

名字2009 4th International Conference on Communications and Networking in China, CHINACOM 2009

Other

Other2009 4th International Conference on Communications and Networking in China, CHINACOM 2009
國家China
城市Xian
期間09-08-2609-08-28

    指紋

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Software

引用此

Ke, C. H., Wei, C. C., Wu, T. Y., & Deng, D-J. (2009). A smart exponential-threshold-linear backoff algorithm to enhance the performance of IEEE 802.11 DCF. 於 2009 4th International Conference on Communications and Networking in China, CHINACOM 2009 (頁 95-99). [5339950] (2009 4th International Conference on Communications and Networking in China, CHINACOM 2009). https://doi.org/10.1109/CHINACOM.2009.5339950