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A measurement-driven anti-jamming system for 802.11 networks

Pelechrinis, K and Broustis, I and Krishnamurthy, SV and Gkantsidis, C (2011) A measurement-driven anti-jamming system for 802.11 networks. IEEE/ACM Transactions on Networking, 19 (4). 1208 - 1222. ISSN 1063-6692

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Dense, unmanaged IEEE 802.11 deployments tempt saboteurs into launching jamming attacks by injecting malicious interference. Nowadays, jammers can be portable devices that transmit intermittently at low power in order to conserve energy. In this paper, we first conduct extensive experiments on an indoor 802.11 network to assess the ability of two physical-layer functions, rate adaptation and power control, in mitigating jamming. In the presence of a jammer, we find that: 1) the use of popular rate adaptation algorithms can significantly degrade network performance; and 2) appropriate tuning of the carrier sensing threshold allows a transmitter to send packets even when being jammed and enables a receiver to capture the desired signal. Based on our findings, we build ARES, an Anti-jamming REinforcement System, which tunes the parameters of rate adaptation and power control to improve the performance in the presence of jammers. ARES ensures that operations under benign conditions are unaffected. To demonstrate the effectiveness and generality of ARES, we evaluate it in three wireless test-beds: 1) an 802.11n WLAN with MIMO nodes; 2) an 802.11a/g mesh network with mobile jammers; and 3) an 802.11a WLAN with TCP traffic. We observe that ARES improves the network throughput across all test-beds by up to 150%. © 2011 IEEE.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Pelechrinis, Kkpele@pitt.eduKPELE0000-0002-6443-3935
Broustis, I
Krishnamurthy, SV
Gkantsidis, C
Date: 1 August 2011
Date Type: Publication
Journal or Publication Title: IEEE/ACM Transactions on Networking
Volume: 19
Number: 4
Page Range: 1208 - 1222
DOI or Unique Handle: 10.1109/tnet.2011.2106139
Institution: University of Pittsburgh
Schools and Programs: School of Information Sciences > Telecommunications
Refereed: Yes
ISSN: 1063-6692
Date Deposited: 24 May 2011 19:06
Last Modified: 09 May 2020 14:55


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