Fallacious Node Algorithm for Performance Enhancement in Optical-Burst-Switching Networks

2019 ◽  
Vol 40 (3) ◽  
pp. 239-245
Author(s):  
Hardeep Singh Saini ◽  
Amit Wason
Keyword(s):  
Optical Networks ◽  
Performance Enhancement ◽  
Blocking Probability ◽  
Optical Network ◽  
Optical Burst Switching ◽  
Observational Analysis ◽  
Burst Switching ◽  
Optical Burst Switching Networks ◽  
Key Features ◽  
Optical Burst

Abstract In this paper, fallacious node algorithm is formulated for performance enhancement of an optical-burst-switching (OBS) network. With the procedural and observational analysis, we have demonstrated that the blocking probability is extremely unnoticeable, during a call establishment, while collectively discarding the faulty nodes from the selected paths. There may be distinguishing values of blocking probability because of random value of congestion on each path. The blocking probability is restrained so as not to be more than 10 % on several values on traffic and congestion. The blocking probability diminishes and becomes imperceptible with the incorporation of fallacious node algorithm and subsequently the performance of optical network is highly aggrandized. Thus the fallacious node algorithm manifests incredible prospects for optical networks as the key features such as the accessibility; sustainability and reliability of the network are highly appreciated and upgraded.

scholarly journals The optical properties of different materials used for thermo-optical switches

2021 ◽  
Vol 72 (3) ◽  
pp. 184-191
Author(s):  
Michaela Holá ◽  
Martin Králik ◽  
Jarmila Müllerová ◽  
L’ubomír Scholtz
Keyword(s):  
Optical Properties ◽  
Optical Networks ◽  
Optical Switching ◽  
Optical Burst Switching ◽  
Optical Switches ◽  
Switching Network ◽  
Switching Networks ◽  
Burst Switching ◽  
Optical Burst Switching Networks ◽  
Optical Burst

Abstract With growing demands of internet protocol services for transmission capacity and speed, the solution for future high speed optical networks is optical burst switching that is a technology for transmitting large amounts of data bursts through a transparent optical switching network the optical switches in optical burst switching networks play important role in the resource reservation and are very important to ensure reliability and flexibility of the network. This paper is focused on the very important components of Optical Burst Switching networks, ieo ptical switches, specifically thermo-optical switches. In this paper are presented the simulation analysis of performance evaluation of thermo-optical switches executed in the model of Optical Burst Switching network and simulation study of investigation of influence of roughness and layer thickness on the optical properties (spectral reflectance, transmittance) of selected materials (SiO2, Ta2O5, Al2O3) for thermooptical switches.

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.

Link Fault Tolerant Algorithms to Optimize the Blocking in Optical Burst Switching Networks

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Hardeep Singh Saini ◽  
Amit Wason
Keyword(s):  
Fault Tolerance ◽  
Fault Tolerant ◽  
Blocking Probability ◽  
Optical Burst Switching ◽  
Wavelength Assignment ◽  
Burst Switching ◽  
Optical Burst Switching Networks ◽  
Assignment Algorithm ◽  
Service Disruption ◽  
Optical Burst

Abstract In this paper, link fault tolerant algorithms (LFTAs) are employed for optimization of blocking performance in optical burst switching (OBS) networks for dynamic establishment of wavelength-routed lightpaths. This paper presents two algorithms: link fault tolerance algorithm for least congestion (LFTALC) and link fault tolerance algorithm for optimized blocking (LFTAOB). In former algorithm, the path with least congestion is selected and in the latter algorithm the path with least blocking probability is selected and then both the algorithms check for the availability of fault on the links present in the selected path. The findings indicate that methods of developing link based fault tolerant algorithms keep good performance and fairness among all the connections. The key advantage of these proposed algorithms as compared to routing and wavelength assignment algorithm is that these are very simple in nature and require less service disruption time.

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