On the Robustness of IEEE802.11 Rate Adaptation Algorithms Against Smart Jamming

The authors investigate the resiliency of IEEE802.11 Rate Adaptation Algorithms (RAA) against smart jamming attacks. Their consider several classes of state-of-the-art RAAs that include the SampleRate, ONOE, AMRR, and the RAA used in Atheros Microsoft Windows XP driver. They model the behavior of these algorithms, and show the existence of very efficient attacks that exploit RAA-specific vulnerabilities as well as the inherent weaknesses that exist in the design of IEEE802.11 MAC and link layer protocol: in particular the overt packet rate information being transmitted, predictable rate selection mechanism, performance anomaly caused by the equiprobability of transmissions among all nodes regardless of the data rates being employed, and the lack of interference differentiation from poor link quality by IEEE802.11 RAAs.
Provided by: Association for Computing Machinery Topic: Mobility Date Added: Jun 2011 Format: PDF

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