Relevant bibliographies by topics / Optical burst switching networks (OBS)

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Academic literature on the topic 'Optical burst switching networks (OBS)'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Optical burst switching networks (OBS)"

1

Saini, H., and A. K. Garg. "Burst Assembly Framework for High Speed Optical Network." International Journal of Engineering & Technology 7, no. 3.27 (2018): 404. http://dx.doi.org/10.14419/ijet.v7i3.27.17983.

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Optical Burst Switching (OBS) is promising technique to support requirements of high speed optical networks. OBS network ingress node assembles packets into bursts. Burst assembly criteria have to be optimally chosen based on network requirements. In this paper, burst assembly framework is presented which can support optimal time/size value selection during burst formation. It is observed that, network with high timeout supports high Transmission Control Protocol (TCP) throughput for a range of burst size. For lower burst timeout values, throughput performance degrades only for small size bursts and further reduction in timeout threshold degrades throughput for range of burst size.
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Balamurugan, A. M., and A. Sivasubramanian. "Quantum Key Based Burst Confidentiality in Optical Burst Switched Networks." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/786493.

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The optical burst switching (OBS) is an emergent result to the technology concern that could achieve a feasible network in future. They are endowed with the ability to meet the bandwidth requirement of those applications that require intensive bandwidth. There are more domains opening up in the OBS that evidently shows their advantages and their capability to face the future network traffic. However, the concept of OBS is still far from perfection facing issues in case of security threat. The transfer of optical switching paradigm to optical burst switching faces serious downfall in the fields of burst aggregation, routing, authentication, dispute resolution, and quality of service (QoS). This paper deals with employing RC4 (stream cipher) to encrypt and decrypt bursts thereby ensuring the confidentiality of the burst. Although the use of AES algorithm has already been proposed for the same issue, by contrasting the two algorithms under the parameters of burst encryption and decryption time, end-to-end delay, it was found that RC4 provided better results. This paper looks to provide a better solution for the confidentiality of the burst in OBS networks.
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3

Randhawa, Rajneesh, J. S. Sohal, Amit Kumar Garg, and R. S. Kaler. "An Efficient Network Utilization Scheme for Optical Burst Switched Networks." Journal of Information Technology Research 3, no. 2 (2010): 34–49. http://dx.doi.org/10.4018/jitr.2010040103.

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Optical Burst Switching (OBS) is one of the most important switching technologies for future IP over wavelength division multiplexing (WDM) networks. In OBS Network, the burst assembly technique is a challenging issue in the implementation of the system. Burst assembly influences burst characteristics, which negatively impacts network performance. In this paper, the authors propose an efficient hybrid burst assembly approach, which is based on approximate queuing network model. To reduce the time complexity, an approximate queuing network model has been considered. Throughput performance has been investigated, taking into account both burst loss probability and time complexity. Simulation results have shown that the proposed hybrid approach based on variable burst length threshold and fixed maximum time limitation provides Simulation results have also shown a good trade-off between burst blocking performance and scheduling time.
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4

Manisekar, S., and J. A. V. Selvi. "Channel Scheduling Based on Orchestrator Live Node-Wavelength Reservation for Optical Burst Switching Networks." Current Signal Transduction Therapy 15, no. 1 (2020): 34–45. http://dx.doi.org/10.2174/1574362413666181109111518.

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Background: Dedicated wavelength utilization and the isolation of control plane from the data plane are the important features in the design of Optical Burst Switching (OBS). The contention in bursts, link congestion and the reservation cause the burst dropping in optical networks. The slotted time and the burst assembly models incorporate the wavelength assignment and the channel reservation schemes to reduce the dropping probability. The reservation of resources prior to burst arrival and the additional delay due to the burst assembly and the offset time are the major issues in the reduction of probability. Besides, the traditional one-to-one packet transmission consumes more time due to a large number of packets handling. Materials and Methods: This paper proposes the novel OBS model that incorporates the three processes such as Open-Flow (OF)-based Orchestrator Live Node (OLN) modeling, fuzzy logic based ranking and the offset time-based reservation (without/with void filling) to overcome the issues in the traditional methods. Initially, the OLN modeling based on OF analysis includes the Flow Information Base (FIB) table for the periodical update of the link information. The fuzzy logic- based ranking of channels followed by OF-OLN predicts the status of the wavelength such as free, used and conversion. Based on the status, the channels are reserved without and with void filling to schedule the bursts effectively. The reservation scheme employs the Offset-Time Burst Assembly algorithm to allow the resource reservation prior to burst arrival. Through these processes, the reuse of wavelength and the reallocation of resources are possible in OBS. Results & Conclusion: The controlling of maximum burst transfer delay by the OTBA efficiently reduces the end-to-end delay for data traffic. The comparative analysis between the proposed OLN-WR with the existing Hybrid Burst Assembly (HBA), Fuzzy-based Adaptive Threshold (FAT) and Fuzzy-based Adaptive Hybrid Burst Assembly (FAHBA) in terms of end-to-end delay and transmitted amount of bursts assures the applicability of OLN-WR in scheduling and communication activities in OBS networks.
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5

GARG, AMIT KUMAR, and R. S. KALER. "HYBRID CONTENTION RESOLUTION SCHEMES FOR OPTICAL BURST SWITCHED HIGH-SPEED NETWORKS." Journal of Interconnection Networks 10, no. 01n02 (2009): 121–32. http://dx.doi.org/10.1142/s0219265909002467.

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Optical burst switching (OBS) has attracted interest as a transport network architecture for the future optical Internet. However, many challenging issues have to be solved in order to pave the way for an effective implementation of OBS. Contention, which may occur when two or more bursts compete for the same wavelength on the same link, is a critical issue. This paper compares the basic and hybrid contention resolution strategies with respect to burst loss probability and end-to-end transfer delay. The simulation results show that hybrid techniques lead an effective reduction of the burst average loss rate compared to existing techniques. It is also observed that a significant differentiation with regard to burst loss has been achieved, when burst priorities are considered.
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6

Muhammad Umaru, Abubakar, Muhammad Shafie Abd Latiff, and Yahaya Coulibaly. "Fuzzy-Based Adaptive Hybrid Burst Assembly Technique for Optical Burst Switched Networks." Journal of Computer Networks and Communications 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/803518.

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The optical burst switching (OBS) paradigm is perceived as an intermediate switching technology for future all-optical networks. Burst assembly that is the first process in OBS is the focus of this paper. In this paper, an intelligent hybrid burst assembly algorithm that is based on fuzzy logic is proposed. The new algorithm is evaluated against the traditional hybrid burst assembly algorithm and the fuzzy adaptive threshold (FAT) burst assembly algorithm via simulation. Simulation results show that the proposed algorithm outperforms the hybrid and the FAT algorithms in terms of burst end-to-end delay, packet end-to-end delay, and packet loss ratio.
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7

Vanitha, D. Veera, and M. Sabrigiriraj. "Analysis of Hybrid Buffering and Retransmission in OBS Networks." Scientific World Journal 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/159245.

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Burst contention is a major problem in the Optical Burst Switching (OBS) networks. Due to inadequate contention resolution techniques, the burst loss is prominent in OBS. In order to resolve contention fiber delay lines, wavelength converters, deflection routing, burst segmentation, and retransmission are used. Each one has its own limitations. In this paper, a new hybrid scheme is proposed which combines buffering and retransmission, which increases the mean number of bursts processed in the system. In this hybrid method, retransmission with controllable arrival and uncontrollable arrival is analyzed. Normally all the bursts reach the first hop and few of them go for second hop to reach destination. After all the bursts reach the destination the server may go for maintenance activity or wait for the arrival of next burst. We model it as a batch arrival single server retrial queue with buffer. Numerical results are analyzed to show the mean number of bursts processed in the system with uncontrollable arrival and controllable arrivals.
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8

Zheng, Wei, and He Ning. "Simulation of Different Strategies for QoS Improvement in OBS Networks." Advanced Materials Research 159 (December 2010): 609–15. http://dx.doi.org/10.4028/www.scientific.net/amr.159.609.

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Due to the bufferless nature, one of the key challenges in optical burst switching networks is the contention resolution issue, which has made it increasingly important to facilitate QoS provisioning and improve QoS in optical burst switching by adopting appropriate strategies. In the paper, we address the issue of QoS improvement for different contention resolution strategies in optical burst switched networks, and a compounding strategy is proposed based on analysis of various strategies for supporting QoS. To evaluate the performance of different strategies in QoS improvement, simulation models were built up, and the emphasis was focused on comparing the blocking probability and channel utilization probability respectively according to different strategies. By simulation comparison, the difference of strategies in QoS improvement is detailed clearly, and results show that by adopting the compounding strategy, OBS network performance can be improved in QoS supporting.
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9

Rauniyar, A. K., and A. S. Mandloi. "Best Fit Void Filling Segmentation Based Algorithm in Optical Burst Switching Networks." Journal of Advanced College of Engineering and Management 1 (May 13, 2016): 1. http://dx.doi.org/10.3126/jacem.v1i0.14916.

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<p>Optical Burst Switching (OBS) is considered to be a promising paradigm for bearing IP traffic in Wavelength Division Multiplexing (WDM) optical networks. Scheduling of data burst in data channels in an optimal way is one of a key problem in Optical Burst Switched networks. The main concerns in this paper is to schedule the incoming bursts in proper data channel such that more burst can be scheduled so burst loss will be less. There are different algorithms exists to schedule data burst on data channels. Non-preemptive Delay-First Minimum Overlap Channel with Void Filling (NP-DFMOC-VF) and Non-preemptive Segment-First Minimum Overlap Channel with Void Filling (NP-SFMOC-VF) are best among other existing segmentation based void filling algorithms. Though it gives less burst loss but not existing the channel utilization efficiently. In this paper we propose a new approach, which will give less burst loss and also utilize existing channels in efficient way. Also analyze the performance of this proposed scheduling algorithm and compare it with the existing void filling algorithms. It is shown that the proposed algorithm gives some better performances compared to the existing algorithms.</p><p><em>Journal of Advanced College of Engineering and Management, Vol.1, 2015,</em> pp. 1-10</p><p> </p>
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10

Charcranoon, Saravut, Tarek S. El-Bawab, Jong-Dug Shin, and Hakki C. Cankaya. "Group-Scheduling for Multi-Service Optical Burst Switching (OBS) Networks." Photonic Network Communications 11, no. 1 (2006): 99–110. http://dx.doi.org/10.1007/s11107-006-5327-x.

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