Characterizing the Stability Region of IEEE 802.11 Distributed Coordination Function - Part I: Single Channel Analysis
نویسندگان
چکیده
In this paper we model and characterize the stability region of IEEE 802.11 Distributed Coordination Function (DCF) both qualitatively and quantitatively. We also provide an intuitive explanation and verification by comparing it to the known stability region of slotted Aloha. We show that the size of backoff window plays a decisive role in shaping the corresponding stability region. Specifically, when the backoff window is sufficiently large, the stability region is convex, and it evolves into a concave region as the window size decreases. In addition, for given parameterization, there exists a unique stable region when the window size is sufficiently large, whereas smaller window sizes may lead to a collection of stability regions.
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