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Towards a trustworthy PF scheduler for cellular data networks

Pelechrinis, K and Krishnamurthy, P and Gkantsidis, C (2012) Towards a trustworthy PF scheduler for cellular data networks. In: UNSPECIFIED UNSPECIFIED, 1010 - 1016. ISBN 9781467309219

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Cellular data networks are proliferating to address the need for ubiquitous connectivity. To cope with the increasing number of subscribers and with the spatio-temporal variations of the wireless signals, current cellular networks use opportunistic schedulers, such as the Proportional Fairness scheduler (PF), to maximize network throughput while maintaining fairness among users. Such scheduling decisions are based on channel quality metrics and Automatic Repeat reQuest (ARQ) feedback reports provided by the User's Equipment (UE). Implicit in current networks is the a priori trust on every UE's feedback. Malicious UEs can thus exploit this trust to disrupt service by intelligently faking their reports. This work proposes a trustworthy version of the PF scheduler (called TPF) to mitigate the effects of such Denial-of-Service (DoS) attacks. In brief, based on the channel quality reported by the UE, we assign a probability to possible ARQ feedbacks. We then use the probability associated with the actual ARQ report to assess the UE's trustworthiness. We adapt the scheduling mechanism to give higher priority to more trusted users. Our evaluations show that TPF (i) does not induce any performance degradation under benign settings, and (ii) it completely mitigates the effects of the activity of malicious UEs. © 2012 IEEE.


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Item Type: Book Section
Status: Published
CreatorsEmailPitt UsernameORCID
Pelechrinis, Kkpele@pitt.eduKPELE0000-0002-6443-3935
Krishnamurthy, Pprashk@pitt.eduPRASHK
Gkantsidis, C
Date: 1 December 2012
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Journal or Publication Title: GLOBECOM - IEEE Global Telecommunications Conference
Page Range: 1010 - 1016
Event Type: Conference
DOI or Unique Handle: 10.1109/glocom.2012.6503245
Institution: University of Pittsburgh
Schools and Programs: School of Information Sciences > Telecommunications
Refereed: Yes
ISBN: 9781467309219
Date Deposited: 28 May 2013 16:46
Last Modified: 10 Apr 2020 13:55


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