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arXiv · 1302.1697

Fairness in Collision-Free WLANs

Luis Sanabria-Russo·Jaume Barcelo·Boris Bellalta
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Abstract

CSMA/ECA is a contention protocol that makes it possible to construct a collision-free schedule by using a deterministic backoff after successful transmissions. In this paper, we further enhance the CSMA/ECA protocol with two properties that allows to fairly accommodate a large number of contenders in a collision-free schedule. The first property, called hysteresis, instructs the contenders not to reset their contention window after successful transmissions. Thanks to hysteresis, the protocol sustains a high throughput regardless of the number of contenders. The second property, called fair-share, preserves fairness when different nodes use different contention windows. We present simulations results that evidence how these properties account for performance gains that go even further beyond CSMA/CA.

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Luis Sanabria-Russo, Jaume Barcelo, Boris Bellalta. 2013-02-07. Fairness in Collision-Free WLANs. https://arxiv.org/abs/1302.1697

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