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Sensors 2018, 18(2), 404; https://doi.org/10.3390/s18020404

Wireless Networks under a Backoff Attack: A Game Theoretical Perspective

Information Processing and Telecommunications Center, Universidad Politécnica de Madrid, ETSI Telecomunicación, Av. Complutense 30, 28040 Madrid, Spain
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Received: 30 November 2017 / Revised: 9 January 2018 / Accepted: 24 January 2018 / Published: 30 January 2018
(This article belongs to the Section Sensor Networks)
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Abstract

We study a wireless sensor network using CSMA/CA in the MAC layer under a backoff attack: some of the sensors of the network are malicious and deviate from the defined contention mechanism. We use Bianchi’s network model to study the impact of the malicious sensors on the total network throughput, showing that it causes the throughput to be unfairly distributed among sensors. We model this conflict using game theory tools, where each sensor is a player. We obtain analytical solutions and propose an algorithm, based on Regret Matching, to learn the equilibrium of the game with an arbitrary number of players. Our approach is validated via simulations, showing that our theoretical predictions adjust to reality. View Full-Text
Keywords: CSMA/CA; backoff attack; game theory; Nash equilibrium; correlated equilibrium; regret matching CSMA/CA; backoff attack; game theory; Nash equilibrium; correlated equilibrium; regret matching
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Parras, J.; Zazo, S. Wireless Networks under a Backoff Attack: A Game Theoretical Perspective. Sensors 2018, 18, 404.

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