scholarly journals Optimized Traffic Grooming through modified PSO based Iterative Hungarian algorithm in Optical Networks

2021 ◽  
Vol 50 (3) ◽  
pp. 546-557
Author(s):  
J. KUMARNATH ◽  
K. BATRI
Keyword(s):  
Performance Analysis ◽  
Optical Networks ◽  
Performance Measures ◽  
Shortest Path ◽  
Optical Network ◽  
Traffic Grooming ◽  
Pso Algorithm ◽  
Propagation Delay ◽  
The Other ◽  
Modified Pso

Due to huge size of the data and quick transmission of data between the nodes present in the optical network, a condition of network traffic is created among the nodes of the network. This issue of traffic can be overcome by employing numerous traffic grooming techniques. In this research paper, the best suitable shortest path is determined by the multi objective modified PSO algorithm and an innovative visibility graph based Iterative Hungarian Traffic grooming algorithm is implemented to reduce the blocking ratio through improving the allocation of bandwidth between the users. Then finally the performance analysis is carried out by means of performance measures such as traffic throughput, transceivers count, average propagation delay, blocking ratio, and success ratio. It can be inferred that the proposed work obtains enhanced outcomes when compared to the other existing techniques.

A Decentralized Bandwidth Allocation Scheme for Long-Reach Passive Optical Network

2014 ◽  
Vol 631-632 ◽  
pp. 795-800
Author(s):  
Fang Miao ◽  
Li Feng
Keyword(s):  
Optical Networks ◽  
Bandwidth Allocation ◽  
Optical Network ◽  
Packet Delay ◽  
Propagation Delay ◽  
Passive Optical Network ◽  
Centralized Control ◽  
Allocation Scheme ◽  
Simulation Results ◽  
And Control

This paper proposes an alternative solution for Long-Reach Ethernet passive optical networks. The proposed scheme enables directly communication between ONUs for the transmission of local traffic and control messages, and each ONU calculates bandwidth allocation independently without participation of OLT to remedy the long propagation delay of LR-PON. This scheme also supports centralized control by OLT to change ONUs’ parameters synchronously. Simulation results show that this scheme can effectively reduce the end-to-end packet delay, while maintaining high throughput in uplink channel.

A Simple Way to Compute Parameters for Load Balancer in Optical Networks

2014 ◽  
Vol 918 ◽  
pp. 292-294
Author(s):  
Chia Sheng Tsai ◽  
Sun Wei Cho
Keyword(s):  
Load Balancing ◽  
Optical Networks ◽  
Service Providers ◽  
Low Cost ◽  
Optical Network ◽  
Multipath Routing ◽  
Traffic Grooming ◽  
Dynamic Traffic ◽  
Load Balancer ◽  
Dynamic Traffic Grooming

In this paper, we use the optical dynamic grooming concept to design load balancer. This paper proposes a new solution to achieve optimal load balancing for a streaming server. Dynamic traffic grooming can be utilized in combination with multipath routing to serve the bandwidth intensive applications when resource is not sufficient in the optical network. At the same time, most of the connections require bandwidth smaller than the capacity available in a wavelength, leading to low resource utilization of established light-paths. Leveraging multipath routing and dynamic grooming can efficiently utilize the residual capacity of the under-used wavelengths [.We inherit the concept of dynamic traffic grooming in optical network. We were able to develop a Windows XP load balancer. We designed some experiments to evaluate the performance of our system to determine if our system was capable of achieving the load balance. The solution will allow enterprises and service providers to reach load balancing purposes without adding additional hardware by utilizing an idle, low cost switch.

Performance analysis of an optical network employing waveband and traffic grooming

2011 ◽  
Vol 22 (2) ◽  
pp. 151-161
Author(s):  
Helvecio M. Almeida ◽  
Eduardo M. G. de Queiroz ◽  
Eduardo J. Aloia ◽  
Murilo A. Romero ◽  
Amilcar C. Cesar
Keyword(s):  
Performance Analysis ◽  
Optical Network ◽  
Traffic Grooming

Light Trail Based Cost Efficient Traffic Grooming in Optical WiMAX Hybrid Network

2020 ◽  
Vol 17 (1) ◽  
pp. 425-433
Author(s):  
Deepa Naik ◽  
Soumyadeb Maity ◽  
Tanmay De
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
Access Network ◽  
Traffic Grooming ◽  
Base Stations ◽  
Passive Optical Network ◽  
Hybrid Networks ◽  
Hybrid Network ◽  
Network Topologies ◽  
Cost Efficient

Integrating Passive Optical Network (PON) and Worldwide Interoperability for Microwave Access network (WiMAX)achieves universal internet connectivity at a higher data rate. Here Passive Optical Networks (PONs) are used as the backbone. Base stations in WiMAX are connected to Optical Network Units. In this work cost, routing and resource allocation related issues in hybrid networks are investigated. Light trails are used for traffic grooming. Various network topologies are used for simulation and results are obtained, compared. and analyzed. The results confirm a lower cost solution by using hybrid networks for universal connectivity.

scholarly journals Investigation of dynamic routing and spectrum allocation methods in elastic optical networks

2017 ◽  
Vol 63 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Edyta Biernacka ◽  
Jerzy Domżał ◽  
Robert Wójcik
Keyword(s):  
Optical Networks ◽  
Shortest Path ◽  
Optical Transmission ◽  
Optical Network ◽  
Simulation Software ◽  
Spectrum Allocation ◽  
Elastic Optical Network ◽  
Modulation Techniques ◽  
Routing And Spectrum Allocation ◽  
Allocation Methods

Abstract The introduction of flexible frequency grids and advanced modulation techniques to optical transmission, namely an elastic optical network, requires new routing and spectrum allocation techniques. In this paper, we investigate dynamic two-step routing and spectrum allocation (RSA) methods for elastic optical networks. K-shortest path-based methods as well as spectrum allocation methods are analysed and discussed. Experimental verification of the investigated techniques is provided using simulation software. Simulation results present effectiveness of routing and spectrum allocation methods for analyzed networks using requested bandwidth of connections. Moreover, performance of shortest path first methods improves considerably when a number of candidate paths increases in the UBN24 topology.

scholarly journals The Optical Network Design Using Availability Models to Accept Additional Nodes

2011 ◽  
Vol 2-3 ◽  
pp. 553-558
Author(s):  
Jong Boo Eun ◽  
Gyou Tae Park ◽  
Gwang Hoon Ahn ◽  
Hie Sik Kim
Keyword(s):  
Performance Analysis ◽  
Optical Networks ◽  
Optical Network ◽  
Initial Step ◽  
Optical Network Design ◽  
Hardware Failures ◽  
And Performance ◽  
Definition Of ◽  
Logical Topology ◽  
Availability Model

It is so obvious that we have to consider factors of costs, the QoS (Quality of Service), and performance analysis for the design of an optical network. The models of Traffic and availability are significant factors for achieving the performance analysis from the initial step to deploying network. But current traffic models are solely used by a single segment. Whole networks are extended from a sing traffic model. On the other hand an availability model is just used to find the rate of hardware failures. In this paper, we implemented an availability model with regional conformance by inversely analyzing the definition of availability. Also, we computed the number of nodes and links to configure the logical topology of optical networks by using our designed availability. Furthermore, we proposed a method to design an optical network by using our novel availability model.

scholarly journals PERFORMANCE ANALYSIS OF WSXC AND WIXC SSM OXC IN WDM OPTICAL NETWORKS

2014 ◽  
pp. 7-11
Author(s):  
MD. ISHTIAQUE AZIZ ZAHED ◽  
MD. SHAH AFRAN
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Wavelength Conversion ◽  
Optical Network ◽  
Propagation Delay ◽  
Optical Signal ◽  
Wdm Optical Networks ◽  
Power Penalty ◽  
Time Duration ◽  
The Impact

The impact of inband crosstalk on an optical signal passing through optical cross-connect nodes (OXC’s) in wavelength division multiplexing (WDM) optical network, is studied from the equation of electric field with crosstalk and the corresponding current. The analysis has been done for two SSM (space switching matrix) OXC architecture namely WSXC & WIXC where later one has full wavelength conversion capability. Although WIXC attenuates more crosstalk though it is found that depending on the values of optical propagation delay differences, coherent time of lasers and time duration of one bit of the signal, the required power penalty in WIXC may be greater than that of WSXC in some cases. The analysis has been performed on the measures of Bit Error Rate (BER) and Power Penalty.

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