A new adaptive receiver-initiated scheme for mitigating starvation in wireless networks

Authors:  A. Leonardi, S. Palazzo, C. Rametta, E.W. Knightly

Abstract:
Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) has been adopted by the IEEE 802.11 standard and provides good performance when all transmitters are within the range of each other. Unfortunately, in multi-hop topologies, the asymmetric view of the channel state leads to a throughput distribution where a few flows may capture all the available bandwidth while many other flows get very low throughput and sometime meet starvation. To address this problem, in this paper we describe a solution called Carrier Sense Multiple Access with Collision Avoidance by Receiver Detection (CSMA/CARD) which makes use of collisions sensed by a receiver at the physical layer to help the handshake mechanism and mitigate the effect of such problem. More specifically, we propose a mechanism based on historical observations, where collisions can be used by the receiver to predict whether some sender attempted to initiate a transmission. The receiver then reacts accordingly by participating itself in a handshake sequence. We show some interesting results, obtained through analysis and simulations, when the CSMA/CARD is compared to the IEEE 802.11 protocol.

Keywords:
MAC
CSMA/CA
Receiver-initiated
Evaluation
Wireless
Starvation
Simulation

Published in: Ad Hoc Networks (Volume 11, Issue 2, January 2013)

Publisher: Elsevier

ISSN Information: 1570-8705

A new adaptive receiver-initiated scheme for mitigating starvation in wireless networks

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