Comparison of Multichannel MAC Protocols

Mo, Jeonghoon; So, H.-S.W.; Walrand, Jean

doi:10.1109/tmc.2007.1075

Cited by 297 publications

(21 citation statements)

References 8 publications

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“…The distributed type is categorized into single rendezvous and parallel one [7]. In single rendezvous, the steady time period [5], [8], the steady frequency channel [5], [8], and the steady hopping pattern [9], [10] are used for the rendezvous channel. If the steady resources for rendezvous channel are used by PS, the construction of rendezvous channel is difficult.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Learning Time for Learning-Assisted Rendezvous Channel in Cognitive Radio System

Takyu

Takayuki

Fujii

et al. 2015

IEICE Trans. Commun.

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SUMMARYThis paper derives the optimal learning time for the learning-assisted rendezvous channel. One problem with the dynamic spectrum access system of cognitive radio is access channel mismatch between two wireless terminals. In the learning-assisted rendezvous channel, before exchanging packets for link connection, the rate of channel occupancy by the other system is estimated within the learning time; it is referred to as the channel occupancy rate (COR). High speed packet exchange is made possible by selecting a low COR channel. However, the optimal learning time and the impact of COR estimation errors have not been clarified yet. This paper analyzes the time to rendezvous channel (TTR), where TTR is the time needed to complete the rendezvous with a certain probability. The results indicate that the learning time and TTR have a concave relationship which means that the optimal learning time can be determined.

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Section: Introductionmentioning

confidence: 99%

Optimization of Learning Time for Learning-Assisted Rendezvous Channel in Cognitive Radio System

Takyu

Takayuki

Fujii

et al. 2015

IEICE Trans. Commun.

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“…We will assume that the PU activity on a PU channel is characterized by an ON-OFF source model alternating between ON (busy) and OFF (idle) states, which has been widely used in numerous existing works [9]. To efficiently use available spectrum resources, the dedicated control channel approach [23] [24] is applied to perform the control signaling and data transmission simultaneously. Hence, it is assumed that there is a single control channel utilized by the SUs in the network.…”

Section: System Modelmentioning

confidence: 99%

“…In this paper, an energy-efficient non-overlapping channel MAC (ENC-MAC) for CRSNs is proposed. In order to process the control signaling and data transmission at the same time, the dedicated common control channel (CCC) approach is applied [23] [24]. It is assumed that the SUs are equipped with two half-duplex transceivers to efficiently perform the four aforementioned phases.…”

Section: Introductionmentioning

confidence: 99%

ENC-MAC: Energy-efficient Non-overlapping Channel MAC for Cognitive Radio enabled Sensor Networks

2015

KSII TIIS

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The concept of Internet of Things (IoT) has shed new light on WSN technologies. MAC protocol issues improving the network performance are important in WSNs because of the increase in demand for various applications to secure spectrum resources. Cognitive radio (CR) technology is regarded as a solution to the problems in this future wireless network. In recent years, energy efficiency has become an issue in CR networks. However, few relevant studies have been conducted. In this paper, an energy-efficient non-overlapping channel MAC (ENC-MAC) for CR-enabled sensor networks (CRSNs) is proposed. Applying the dedicated control channel approach, ENC-MAC allows the SUs to utilize channels in a non-overlapping manner, and thus spectrum efficiency is improved. Moreover, the cooperative spectrum sensing that allows an SU to use only two minislots in the sensing phase is addressed to enhance energy efficiency. In addition, an analytical model for evaluating the performance, such as saturation throughput, average packet delay, and network lifetime, is developed. It is shown in our results that ENC-MAC remarkably outperforms existing MAC protocols.

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“…The channel structure of CA-MAC is based on the split phase multichannel MAC protocols described in [20,21], where time is divided into a number of phases for control and data transmission. Unlike them, CA-MAC does not use a CCC and has two radio interfaces.…”

Section: Channel Architecturementioning

confidence: 99%

A concurrent access MAC protocol for cognitive radio ad hoc networks without common control channel

Timalsina

Moh

Chung

et al. 2013

EURASIP J. Adv. Signal Process.

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Cognitive radio ad hoc networks (CRAHNs) consist of autonomous nodes that operate in ad hoc mode and aim at efficient utilization of spectrum resources. Usually, the cognitive nodes in a CRAHN exploit a number of available channels, but these channels are not necessarily common to all nodes. Such a network environment poses the problem of establishing a common control channel (CCC) as there might be no channel common to all the network members at all. In designing protocols, therefore, it is highly desirable to consider the network environment with no CCC. In this article, we propose a MAC protocol called concurrent access MAC (CA-MAC) that operates in the network environment with no CCC. The two devices in a communication pair can communicate with each other even if they have only one common channel available. Therefore, the problems with CCC (such as channel saturation and denial of service attacks) can also be resolved. In CA-MAC, channel accesses are distributed over communication pairs, resulting in increased network connectivity. In addition, CA-MAC allows different communication pairs to access multiple channels concurrently. According to our performance study, CA-MAC provides higher network connectivity with shorter channel access delay compared to SYN-MAC, which is the conventional key MAC protocol for the network environment with no CCC, resulting in better network throughput.

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Comparison of Multichannel MAC Protocols

Cited by 297 publications

References 8 publications

Optimization of Learning Time for Learning-Assisted Rendezvous Channel in Cognitive Radio System

Optimization of Learning Time for Learning-Assisted Rendezvous Channel in Cognitive Radio System

ENC-MAC: Energy-efficient Non-overlapping Channel MAC for Cognitive Radio enabled Sensor Networks

A concurrent access MAC protocol for cognitive radio ad hoc networks without common control channel

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