Saturation Throughput in a Heterogeneous Multi-Channel Cognitive Radio Network

Pla, Vicent; Vuyst, Stijn De; Turck, Koen De; Bernal-Mor, Elena; Martínez-Bauset, Jorge; Wittevrongel, Sabine

doi:10.1109/icc.2011.5963512

Cited by 9 publications

(4 citation statements)

References 16 publications

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“…In Figure 14, IEEE 802.11n, TMAC, and ATMAC protocols are examined under 2 different loads (200 and 100Mbps). 34 The network increases the number of nodes; the saturation and average throughput ("the average number of bits transmitted by the CR link in each second") does not decrease for ATMAC and other MAC protocols. Here, all the simulated protocols are performed almost similar at higher loads, but ATMAC and TMACs are showing better performance with low loads.…”

Section: Delay and Average Throughput Analysismentioning

confidence: 99%

“…The saturation throughput is computed as the average number of (payload) bits that can be transmitted during an idle period over the average duration of the sequence of an idle period plus a busy period. 34 The network increases the number of nodes; the saturation and average throughput ("the average number of bits transmitted by the CR link in each second") does not decrease for ATMAC and other MAC protocols. Here, higher throughput is practically independent of the number of nodes in the wireless networks.…”

Section: Delay and Average Throughput Analysismentioning

confidence: 99%

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ATMAC: adaptive token‐based medium access control protocol for cognitive radio wireless mesh network

Battula

Gaur

Gopalani

2016

Int J Communication

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In next generation wireless communication, cognitive radio technology facilitates to utilize underutilized licensed frequency bands that help to enhance the spectrum utilization. Cognitive radio wireless mesh network (CRWMN) is a promising and reliable technology to experience high throughput with low cost. Existing IEEE 802.11 based medium access control (MAC) protocols offer high data rates with decreasing efficiency at the MAC layer. Hence, most of the researchers applied aggregation mechanisms to provide the solution to bandwidth craving applications. In CRWMN, MAC design is significant because stability, efficient resource utilization, and scalability are predominating problems; however, the specified MAC issues are not yet resolved. The proposed MAC is novel, which aims to ensure reliability and scalability for CRWMN. The common control channel is used to exchange handshaking frames between the transmitter and receiver. It helps us to schedule the data transmission as well as reserve the channel in a discrete time interval. It introduces a token-based channel accessing mechanism with resource-aware channel assignment, which resolves the problems of efficiency and stability. The proposed MAC simulated using the network simulator (ns-2), and the simulation results demonstrate that the proposed protocol improved the performance compared with the existing protocols.

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Section: Delay and Average Throughput Analysismentioning

confidence: 99%

Section: Delay and Average Throughput Analysismentioning

confidence: 99%

ATMAC: adaptive token‐based medium access control protocol for cognitive radio wireless mesh network

Battula

Gaur

Gopalani

2016

Int J Communication

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“…In [10], a loss model for spectrum access with a finite user population is presented and the delay of SUs is investigated based on a CTMC. In [11], a CTMC model is developed to assess the maximum throughput of SUs in a heterogeneous CRN. The behavior of a CRN system with both PUs and SUs is modeled by a twodimensional Markov chain in [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Analysis of secondary user performance in cognitive radio networks with reactive spectrum handoff

et al. 2016

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Cognitive radio networks use dynamic spectrum access of secondary users (SUs) to deal with the problem of radio spectrum scarcity. In this paper, we investigate the SU performance in cognitive radio networks with reactive-decision spectrum handoff. During transmission, a SU may get interrupted several times due to the arrival of primary (licensed) users. After each interruption in the reactive spectrum handoff, the SU performs spectrum sensing to determine an idle channel for retransmission. We develop two continuous-time Markov chain models with and without an absorbing state to study the impact of system parameters such as sensing time and sensing room size on several SU performance measures. These measures include the mean delay of a SU, the variance of the SU delay, the SU interruption probability, the average number of interruptions that a SU experiences, the probability of a SU getting discarded from the system after an interruption and the SU blocking probability upon arrival.

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“…Multi-channel transmissions are especially useful for CRNs to obtain a higher spectrum access success probability and to fully explore access opportunities [6] [7]. In some emergency service networks where CRNs are envisaged to be deployed [8] [9], such improvement is highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Efficient data transmission with random linear coding in multi-channel cognitive radio networks

Zheng

Dutkiewicz

Liu

et al. 2013

2013 IEEE Wireless Communications and Networking Conference (WCNC)

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Efficient data transmission in cognitive radio networks (CRNs) is critical for cognitive radio (CR) users to communicate with each other in an opportunistic manner. Even with successful access to required channels, the transmission could still suffer from failures due to channel fading. In this paper, we propose a random linear coded scheme for efficient data transmission in multi-channel CRNs under practical fading channel conditions. We develop theoretical analysis and derive general form solutions for the batch delay associated with the proposed scheme. We also use our theoretical model to analyze the performances of two multi-channel automatic repeat request (ARQ) based schemes. Simulation results validate the analysis and show that the coded scheme outperforms the ARQ based schemes in terms of batch transmission delay. Additionally, the coded scheme is less dependent on feedback channels than the other schemes.

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Saturation Throughput in a Heterogeneous Multi-Channel Cognitive Radio Network

Cited by 9 publications

References 16 publications

ATMAC: adaptive token‐based medium access control protocol for cognitive radio wireless mesh network

ATMAC: adaptive token‐based medium access control protocol for cognitive radio wireless mesh network

Analysis of secondary user performance in cognitive radio networks with reactive spectrum handoff

Efficient data transmission with random linear coding in multi-channel cognitive radio networks

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