Performance Anomaly of the IEEE 802.11 DCF in Different Frame Error Rate Conditions

  • Kang, Koohong (Dept. of Information and Communication Engineering, Seowon University)
  • Received : 2012.02.10
  • Accepted : 2012.05.25
  • Published : 2012.12.31


We propose an analytic model to compute the station's saturated throughput and packet delay performance of the IEEE 802.11 DCF (Distributed Coordination Function) in which frame transmission error rates in the channel are different from each other. Our analytic model shows that a station experiencing worse frame error rates than the others suffers severe performance degradation below its deserved throughput and delay performance. 802.11 DCF adopts an exponential back-off scheme. When some stations suffer from high frame error rates, their back-off stages should be increased so that others get the benefit from the smaller collision probabilities. This impact is then recursively applied to degrade the performance of the victim stations. In particular, we show that the performance is considerably degraded even if the frame error rate of the victim station satisfies the receiver input level sensitivity that has been specified in the IEEE 802.11 standard. We also verify the analytic results by the OPNET simulations.



  1. B. Crow, I. Widjaja, J. Kim and P. Sakai,"IEEE 802.11 Wireless Local Area Networks," IEEE Communications Magazine, Vol.35, No.9, 1997, pp.116-126.
  2. E. Borgia, M. Conti and E. Gregori,"IEEE 802.11b Ad Hoc Networks: Performance Measurement," Journal of Cluster Computing, Vol.8, 2005, pp.135-145.
  3. M. Heusse, F. Rousseau, G. Berger-Sabbatel and A. Duda, "Performance anomaly of 802.11b," Proceedings of the IEEE Infocom, 2003.
  4. J. Choi, J. Na, K. Park and C. Kim, "Adaptive optimization of the rate adaptation algorithm in multirate WLANs," Proceedings of the IEEE International Conference on Network Protocols, 2007.
  5. IEEE, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, IEEE Std 802.11 - 2007 (Revision of IEEE STd 802.11 - 1999, June, 2007.
  6. G. Bianchi, "Performance analysis of IEEE 802.11 distributed coordination function,"IEEE Journal of Selected Areas in Communications, Vol.18, No.3, 2000, pp.535-547.
  7. D. Malone, K. Duffy and D. Leith, "Modeling the 802.11 distributed coordination function in nonsaturated heterogeneous conditions,"IEEE/ACM Trans. On Networking,Vol.15, No.1 2007, pp.159- 172.
  8. Q. Ni, T. Li, T. Turletti and Y. Xiao, "Saturation throughput analysis of error-prone 802.11 wireless networks," Wiley Journal of Wireless Communications and Mobile Computing, 2005.
  9. P. Chatzimisios, A. Boucouvalas and V. Vitsas, "Packet delay analysis of IEEE 802.11 MAC protocol," Electronics Letters, Vol.39, No.18, 2003.
  10. OPNET, OPNET Modeler,

Cited by

  1. A New Adaptive Modulation and Coding Method for Communication-Based Train Control Systems using WLAN**This research was supported in part by JSPS KAKENHI Grant Numbers 15H02252, 15K06064, 26820143 and The Telecommunications Advancement Foundation. vol.49, pp.22, 2016,
  2. An Optimized Link Layer Design for Communication-Based Train Control Systems Using WLAN vol.6, pp.2169-3536, 2018,