CRAHNs: Cognitive radio ad hoc networks

Akyildiz, Ian F.; Lee, Won-Yeol; Chowdhury, Kaushik R.

doi:10.1016/j.adhoc.2009.01.001

Cited by 1,162 publications

(704 citation statements)

References 70 publications

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“…We consider a Cognitive Radio Ad-Hoc Network, which is composed of a set of PR nodes and a set of CR nodes [8]. In this type of network setting, we assume that no centralized network entity is available.…”

Section: System Model and Assumptionsmentioning

confidence: 99%

Improving Data Dissemination in Multi-hop Cognitive Radio Ad-Hoc Networks

et al. 2012

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Abstract. In this paper, we present SURF, a distributed channel selection strategy for efficient data dissemination in multi-hop cognitive radio ad-hoc networks (CRNs). SURF classifies the available channels on the basis of primary radio unoccupancy and the number of cognitive radio neighbors using the channels. Through extensive NS-2 simulations, we compare the performance of SURF with three related approaches. Simulation results confirm that SURF is effective in selecting the best channels for efficient communication and for highest dissemination reachability in multi-hop CRNs.

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Section: System Model and Assumptionsmentioning

confidence: 99%

Improving Data Dissemination in Multi-hop Cognitive Radio Ad-Hoc Networks

et al. 2012

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“…1 TTR is an amount of time, measured in slots, within which cognitive radios meet each other once they began hopping, or after the last rendezvous on a channel. 2 Visiting unavailable channels is the most frequently used approaches while dealing with ACHv in the related work (e.g., [18,22]). …”

Section: Related Workmentioning

confidence: 99%

“…However, these tasks are not feasible in a CR environment without any imposed assumptions, since CR nodes can have a different view of the channels occupied by incumbents and/or other secondary users. Another issue that arises Moreover, in Cognitive Radio Ad Hoc Networks (CRANs), the dynamic network topology, distributed multi-hop architecture, and time and location varying spectrum availability are the key factors [2]. Each Cognitive Radio (CR) user has a different spectrum availability according to the incumbent (Primary User, PU) activity, and it determines its actions based on its local observation.…”

Section: Introductionmentioning

confidence: 99%

Quorum system and random based asynchronous rendezvous protocol for cognitive radio ad hoc networks

Romaszko¹,

Denkovski²,

Pavlovska³

et al. 2013

ICST Trans Mobile Comm Appl

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This paper proposes a rendezvous protocol for cognitive radio ad hoc networks, RAC 2 E-gQS, which utilizes (1) the asynchronous and randomness properties of the RAC 2 E protocol, and (2) channel mapping protocol, based on a grid Quorum System (gQS), and taking into account channel heterogeneity and asymmetric channel views. We show that the combination of the RAC 2 E protocol with the grid-quorum based channel mapping can yield a powerful RAC 2 E-gQS rendezvous protocol for asynchronous operation in a distributed environment assuring a rapid rendezvous between the cognitive radio nodes having available both symmetric and asymmetric channel views. We also propose an enhancement of the protocol, which uses a torus QS for a slot allocation, dealing with the worst case scenario, a large number of channels with opposite ranking lists.

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“…Typically, local sensing for primary signal detection can be formulated as a binary hypothesis problem as follows [14]:…”

Section: A Cooperative Spectrum Sensingmentioning

confidence: 99%

A Secure Cognitive Radio Ad-Hoc Network with the Capability of SSDF Attack Detection

Saboor¹,

Payandeh²,

Rohi³

2013

IJFCC

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Abstract-In this article, we made an attempt to clarify it that the inadequacy problem of required spectrum for the exchanges presented in MANET can be solved by means of the Cognitive radio network since it has the sensing potentiality of their surrounding environment and can access to a supplementary frequency band via their parameters comparison. Key management and authentication are two important factors in MANET security. The recent development in Identity-based cryptography has made this method a potential candidate for MANET. However the security in CR-MANET has attracted less attention in comparison with other regions. The authors try to propose an Identity-based cryptography with threshold secret sharing which has been designed for MANET security especially; this method will result in the elimination of SSDF attack trouble in Cognitive radio Ad-Hoc Networks, where the intruder sends wrong results of local spectrum sensing and leads to a wrong spectrum sensing determination in cognitive radios consequently. Following cooperative spectrum sensing scheme, it can find out SSDF attack occurrence, limit intruders' access to t neighbor nodes for the key updating or delete the intruder nodes from the network.Index Terms-Cognitive radio, IBC, MANET, SSDF attack.

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CRAHNs: Cognitive radio ad hoc networks

Cited by 1,162 publications

References 70 publications

Improving Data Dissemination in Multi-hop Cognitive Radio Ad-Hoc Networks

Improving Data Dissemination in Multi-hop Cognitive Radio Ad-Hoc Networks

Quorum system and random based asynchronous rendezvous protocol for cognitive radio ad hoc networks

A Secure Cognitive Radio Ad-Hoc Network with the Capability of SSDF Attack Detection

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