Dual-header optical burst switching: a new architecture for WDM burst-switched networks

2005 ◽  
Author(s):  
N. Barakat ◽  
E.H. Sargent
Keyword(s):  
Optical Burst Switching ◽  
Switched Networks ◽  
Burst Switching ◽  
Optical Burst

scholarly journals Best Fit Void Filling Segmentation Based Algorithm in Optical Burst Switching Networks

2016 ◽  
Vol 1 ◽  
pp. 1
Author(s):  
A. K. Rauniyar ◽  
A. S. Mandloi
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Scheduling Algorithm ◽  
Optical Burst Switching ◽  
Wdm Optical Networks ◽  
Switched Networks ◽  
Burst Switching ◽  
College Of Engineering ◽  
Data Burst ◽  
Optical Burst

<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>

Performance Analysis Of Wdm Mesh Hierarchical Time Sliced Optical Burst Switched Networks

2012 ◽  
Author(s):  
C. Yahaya ◽  
A. L. Muhammad Shafie ◽  
M. Abu Bakar ◽  
E. Hassan
Keyword(s):  
Optical Networks ◽  
Optical Burst Switching ◽  
Loss Probability ◽  
Bandwidth Sharing ◽  
Switched Networks ◽  
Burst Switching ◽  
Delay Sensitive ◽  
Simulation Results ◽  
Near Future ◽  
Optical Burst

Although Optical Burst Switching (OBS) is seen as the favored switching technology for near–future all–optical networks, this technology still suffers from high burst drops probability as a result of contention at the buffer–less core node. Many variants of OBS have been proposed to address this issue. In this paper, the performance of a newly proposed OBS variant known as Hierarchical Time Sliced OBS (HiTSOBS) is studied. The evaluation aims at comparing the performance of HiTSOBS, in terms of burst loss probability and delay for different bandwidths in different topologies. Simulation results demonstrate that larger topologies experience higher loss and higher delay. Moreover, the simulation results show that our proposed bandwidth sharing model is good for delay sensitive applications especially at lower and medium load. Key words: Optical burst switching (OBS); hierarchical time sliced optical burst switching burst loss (HiTSOBS);, contention; burst loss probability (BLP) time slot

QKD-Based Secured Burst Integrity Design for Optical Burst Switched Networks

2016 ◽  
Vol 37 (1) ◽  
Author(s):  
A. M. Balamurugan ◽  
A. Sivasubramanian ◽  
B. Parvathavarthini
Keyword(s):  
Optical Burst Switching ◽  
Optical Data ◽  
Circuit Switching ◽  
Avalanche Effect ◽  
Switched Networks ◽  
Burst Switching ◽  
Security Issues ◽  
Viable Solution ◽  
Secure Hash Algorithm ◽  
Optical Burst

AbstractThe field of optical transmission has undergone numerous advancements and is still being researched mainly due to the fact that optical data transmission can be done at enormous speeds. It is quite evident that people prefer optical communication when it comes to large amount of data involving its transmission. The concept of switching in networks has matured enormously with several researches, architecture to implement and methods starting with Optical circuit switching to Optical Burst Switching. Optical burst switching is regarded as viable solution for switching bursts over networks but has several security vulnerabilities. However, this work exploited the security issues associated with Optical Burst Switching with respect to integrity of burst. This proposed Quantum Key based Secure Hash Algorithm (QKBSHA-512) with enhanced compression function design provides better avalanche effect over the conventional integrity algorithms.

scholarly journals Quantum Key Based Burst Confidentiality in Optical Burst Switched Networks

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
A. M. Balamurugan ◽  
A. Sivasubramanian
Keyword(s):  
Optical Switching ◽  
Optical Burst Switching ◽  
Security Threat ◽  
Switched Networks ◽  
Burst Switching ◽  
Burst Aggregation ◽  
Rc4 Stream Cipher ◽  
Opening Up ◽  
Optical Burst

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.

Simulation of Different Strategies for QoS Improvement in OBS Networks

2010 ◽  
Vol 159 ◽  
pp. 609-615
Author(s):  
Wei Zheng ◽  
He Ning
Keyword(s):  
Network Performance ◽  
Blocking Probability ◽  
Optical Burst Switching ◽  
Simulation Models ◽  
Contention Resolution ◽  
Switched Networks ◽  
Burst Switching ◽  
Optical Burst Switching Networks ◽  
The Difference ◽  
Optical Burst

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.

scholarly journals Optical Burst Switching With Large Switching Overhead

2007 ◽  
Vol 25 (2) ◽  
pp. 451-462 ◽  
Author(s):  
Chun Yin Li ◽  
Guangming Li ◽  
P. K. Alex Wai ◽  
Victor O. K. Li
Keyword(s):  
Optical Burst Switching ◽  
Burst Switching ◽  
Optical Burst

Segmentation overhead in optical burst switching

2002 ◽  
Author(s):  
Lev B. Sofman ◽  
Tarek S. El-Bawab ◽  
Koenraad Laevens
Keyword(s):  
Optical Burst Switching ◽  
Burst Switching ◽  
Optical Burst
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