A new opportunistic MAC layer protocol for cognitive IEEE 802.11-based wireless networks

Benslimane, Abderrahim; Ali, Arshad; Kobbane, Abdellatif; Taleb, Tarik

doi:10.1109/pimrc.2009.5449990

Cited by 13 publications

(12 citation statements)

References 9 publications

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“…The research work that closely matches to our study is [16], which adopts two transceivers per secondary user model from [12] and improves the propositions of [17] through dividing each time slot in four phases: sensing phase, reporting phase, negotiation phase, and data transmission phase. In [16], a new cross-layer MAC protocol for channel allocation is proposed with the option of reserving resources.…”

Section: Related Workmentioning

confidence: 71%

Towards exploiting a synergy between cognitive and multi-radio networking

Khan

Hyder

Islam

2015

2015 IEEE 11th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

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Dynamic spectrum access through Cognitive Radio Networks (CRNs) and exploiting multiple radios on a single node are two different well accepted techniques for enhancing network performance. However, simultaneous usage of both the techniques, i.e., augmenting dynamic spectrum access with multiple radios, is yet to be investigated in the literature. Therefore, in this paper, we investigate simultaneous usage of both the techniques. In our investigation, we perform rigorous ns-2 simulation. Simulation results reveal a key finding -augmenting spectrum harvesting with multiple radios makes throughput worse, however, can improve delay. Besides, as the simulation results do not reveal micro-level aspects of the improved delay performance, we perform mathematical modeling of the delay to do so. Further, we present numerical results based on the models to demonstrate the micro-level aspects.

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Section: Related Workmentioning

confidence: 71%

Towards exploiting a synergy between cognitive and multi-radio networking

Khan

Hyder

Islam

2015

2015 IEEE 11th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

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“…To aid increased secondary user throughput, the secondary users can be equipped with two radios, one for contention and another for simultaneous data transmission. Availability of more than one transceivers has shown to increase secondary throughput [33]. Usage of multiple radios in secondary devices to increase utilization is also prevalent [13], [34].…”

Section: System Model and Assumptionsmentioning

confidence: 99%

Contention Based Multichannel MAC Protocol for Distributed Cognitive Radio Networks

Debroy

Chatterjee

2014

IEEE Trans. on Mobile Comput.

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Design of an efficient medium access control protocol is critical for proper functioning of a distributed cognitive radio network and better utilization of the channels not being used by primary users. In this paper, we design a contention based distributed medium access control (MAC) protocol for the secondary users' channel access. The proposed MAC protocol allows collision-free access to the available data channels and eventually their utilization by secondary users, with spectrum sensing part being handled by exclusive sensing nodes. We further introduce the provision of reservation of free channels by secondaries for extended periods to increase utilization without causing harmful interference to primaries. We demonstrate how such extended access to resources can be tuned to provide differential quality of service to the secondary users. The effectiveness of the protocol is evaluated by performing analysis and simulation. We use blocking probability, secondary usage of a secondary user and performance degradation caused to primary incumbents as performance metrics. We obtain the conditions for such extended access and try to gauge the resulting increase in utilization. Under optimal conditions, the proposed scheme enables the secondary network to utilize all available channels. The proposed scheme is shown to outperform the most sophisticated existing MAC schemes for distributed secondary networks.Index Terms-Cognitive radio networks; secondary users; MAC protocol Ç 1536-1233 ß

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“…Therefore, heterogeneous traffic and impact of sub-channel reservation were considered in [8] and [9]. In [10], an 802.11-based opportunistic spectrum access is proposed for single-channel wireless networks where PUs operate on a slot-by-slot basis.…”

Section: Introductionmentioning

confidence: 99%

Analysis of cognitive radio spectrum access with heterogeneous traffic under buffer constraints

Wang

Zhang

2013

2013 3rd International Conference on Consumer Electronics, Communications and Networks

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In this paper, a novel spectrum sharing scheme is proposed to improve the achievable traffic load in the cognitive radio networks (CRN) with considering heterogeneous traffic and limited system resource (i.e., the buffer capability in a secondary base station), simultaneously. Specifically, we consider a CRN where unlicensed networks employ network coding for data storage control in a secondary base station. We put up three different data-change scenarios and five kinds of comparison mechanisms in every scenario based on heterogeneous traffic. For performance measures, we derive the blocking probability, the probability of forced termination, throughput and spectrum utilization. Numerical results show that compared to the existing approaches, the proposed scheme can carry out higher stable traffic load and spectrum utilization of unlicensed users.

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A new opportunistic MAC layer protocol for cognitive IEEE 802.11-based wireless networks

Cited by 13 publications

References 9 publications

Towards exploiting a synergy between cognitive and multi-radio networking

Towards exploiting a synergy between cognitive and multi-radio networking

Contention Based Multichannel MAC Protocol for Distributed Cognitive Radio Networks

Analysis of cognitive radio spectrum access with heterogeneous traffic under buffer constraints

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