Modeling IEEE 802.11 DCF system dynamics

Zhenzhen Cao*, Ren Ping Liu, Xun Yang, Yang Xiao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)


Experiments show that IEEE 802.11 DCF system exhibits unstable behavior in the congestion onset load range where the system starts to become saturated. This phenomenon is not well investigated due to the lack of proper models. In this paper, we propose a two-dimensional (2-D) Markov chain model by combining the well-known saturated model with newly created idle states. Closed-form solution to the 2-D Markov chain is derived, and system performances are validated by simulations. With the proposed 2-D model, we are able to characterize the unstable system behavior, and provide insights into 802.11 DCF system dynamics.

Original languageEnglish
Title of host publication2010 IEEE Wireless Communication and Networking Conference (WCNC 2010)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Electronic)9781424463961
ISBN (Print)9781424463985
Publication statusPublished - Apr 2010
Externally publishedYes
EventIEEE Wireless Communications and Networking Conference 2010, WCNC 2010 - Sydney, NSW, Australia
Duration: 18 Apr 201021 Apr 2010


OtherIEEE Wireless Communications and Networking Conference 2010, WCNC 2010
CitySydney, NSW


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