Crime and Punishment for Cognitive Radios

Woyach, Kristen; Sahai, Anant; Atia, George K.; Saligrama, Venkatesh

doi:10.1109/allerton.2008.4797562

Cited by 40 publications

(17 citation statements)

References 41 publications

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“…Woyach et al [20] studied how to entice secondary users to observe the spectrum etiquette by giving them incentives. In a similar context, Liu et al [21] studied the problem of detecting unauthorized use of a licensed spectrum.…”

Section: Related Workmentioning

confidence: 99%

Secure Cooperative Sensing in IEEE 802.22 WRANs Using Shadow Fading Correlation

Min

Shin

2011

IEEE Trans. on Mobile Comput.

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Abstract-Cooperative (or distributed) sensing has been recognized as a viable means to enhance the incumbent signal detection by exploiting the diversity of sensors. However, it is challenging to secure such distributed sensing due mainly to the unique features of dynamic spectrum access networks-openness of low-layer protocol stacks in software-defined radio devices and the absence of interactions/coordination between primary and secondary devices. To meet this challenge, we propose an attack-tolerant distributed sensing protocol (ADSP) for DTV signal detection in IEEE 802.22 WRANs, under which sensors in close proximity are grouped as a cluster, and sensors within a cluster cooperate to safeguard the integrity of sensing. The heart of ADSP is a novel filter based on shadow-fading correlation, by which the fusion center cross-validates reports from the sensors to identify and penalize abnormal sensing reports. By realizing this correlation filter, ADSP significantly reduces the impact of an attack on the performance of distributed sensing, while incurring minimal processing and communication overheads. ADSP also guarantees the detectability requirements of 802.22 to be met even with the presence of sensing report manipulation attacks by scheduling sensing within the framework of sequential hypothesis testing. The efficacy of ADSP is validated on a realistic two-dimensional shadow-fading field. Our extensive simulation-based study shows that ADSP reduces the false-alarm rate by 99.2 % while achieving 97.4 % of maximum achievable detection rate, and meets the detection requirements of IEEE 802.22 in various attack scenarios.

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Section: Related Workmentioning

confidence: 99%

Secure Cooperative Sensing in IEEE 802.22 WRANs Using Shadow Fading Correlation

Min

Shin

2011

IEEE Trans. on Mobile Comput.

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“…We then analyze a jail-based mechanism and compare the performance to fines in Section IV. This is an extension of earlier work [32] where jails were used to discourage cheating if sensing were free. We conclude the paper in Section V by looking at the possibilities of aligning the incentives of primary and cognitive users for the purposes of cooperative system design.…”

Section: Introductionmentioning

confidence: 95%

Can We Incentivize Sensing in a Light-Handed Way?

Woyach

Pyapali

Sahai

2010

2010 IEEE Symposium on New Frontiers in Dynamic Spectrum (DySPAN)

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Abstract-The current approach to regulate spectrum sensing seems light-handed (just specify the target sensitivity), but has very heavy-handed consequences. The problem is that sensitivity is an intermediate metric that is convenient for certification, but is does not reflect the true externalities imposed by inadequate sensing. This mismatch causes overhead: usually an overinvestment in sensing at the single-radio level and the inability to exploit synergies across multiple radios because the benefit does not show up in the certification metric of sensitivity. Lighthanded approaches have the benefit of allowing such flexibility but come with their own overheads. This paper explores this question in some detail to see if criminal-law inspired lighthanded approaches can work without imposing more overhead than they are worth.

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“…This avoids the overhead of a mandated identification beacon. The concept of using taboo codes has been suggested in [23] claiming it to be highly efficient. For our study, the process of exchange of terms before a DSL agreement is reached makes it easy to use any of the above mentioned approaches to identify the selfish nodes.…”

Section: ) Identifying Selfish Nodesmentioning

confidence: 99%

Dynamic Spectrum Leasing for Bi-Directional Communication: Impact of Selfishness

Hafeez

Elmirghani

2016

IEEE Trans. Commun.

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Abstract-In this paper, we propose a beamforming based dynamic spectrum leasing (DSL) technique to improve the spectral utility of bi-directional communication of the legacy/primary spectrum users through the help of co-located secondary users. The secondary users help for a time interval to relay the data between two primary terminals using physical layer network coding and beamforming to attain bi-directional communication with high spectral utility. As a reimbursement, the secondary users, cognitive radios (CRs) in our case, get exclusive access to the primary spectrum for a certain duration. We use Nash Bargaining to determine the optimal division of temporal resources between relaying and reimbursement. Moreover, we consider that a fraction of secondary nodes can act selfishly by not helping the primary yet enjoy the reimbursement time. We measure the utility of the DSL scheme in terms of a metric called timebandwidth product (TBP) ratio quantifying the number of bits transmitted in direct communication vs. DSL. We show that if all secondary nodes act honestly, more than 17 folds increase in the TBP ratio is observed for a sparse CR network (CRN). However, in such a network, selfish behavior of CR nodes can reduce the gain by more than a factor of 2.

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Crime and Punishment for Cognitive Radios

Abstract: Crime and Punishment for Cognitive Radios

Cited by 40 publications

References 41 publications

Secure Cooperative Sensing in IEEE 802.22 WRANs Using Shadow Fading Correlation

Secure Cooperative Sensing in IEEE 802.22 WRANs Using Shadow Fading Correlation

Can We Incentivize Sensing in a Light-Handed Way?

Dynamic Spectrum Leasing for Bi-Directional Communication: Impact of Selfishness

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